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d2e1be0df9
power_play/src/user/user_core.c
jacob d2e1be0df9 base_memory refactor
2025-07-30 14:37:19 -05:00

2783 lines
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struct bind_state {
b32 is_held; /* Is this bind held down this frame */
u32 num_presses; /* How many times was this bind's pressed since last frame */
u32 num_repeats; /* How many times was this bind's key repeated since last frame */
u32 num_presses_and_repeats; /* Same as `num_presses` but includes key repeats as well */
u32 num_releases; /* How many times was this bind released since last frame */
};
struct second_stat {
u64 last_second_start;
u64 last_second_end;
u64 last_second;
};
struct console_log {
String msg;
i32 level;
i32 color_index;
P_DateTime datetime;
i64 time_ns;
Rect bounds;
struct console_log *prev;
struct console_log *next;
};
Global struct {
Atomic32 shutdown;
P_Counter shutdown_job_counters;
P_Window *window;
G_Swapchain *swapchain;
struct sim_ctx *local_sim_ctx;
Arena *arena;
String connect_address_str;
ClientStore *user_client_store;
Client *user_unblended_client; /* Contains snapshots received from local sim */
Client *user_blended_client; /* Contains single snapshot from result of blending local sim snapshots */
Snapshot *ss_blended; /* Points to blended snapshot contained in blended client */
/* Usage stats */
i64 last_second_reset_ns;
struct second_stat net_bytes_read;
struct second_stat net_bytes_sent;
/* Gpu resources */
G_RenderSig *render_sig;
struct bind_state bind_states[USER_BIND_KIND_COUNT];
/* Debug camera */
EntId debug_following;
b32 debug_camera;
b32 debug_camera_panning;
Vec2 debug_camera_pan_start;
b32 debug_draw;
/* Debug console */
P_Mutex console_logs_mutex;
Arena *console_logs_arena;
struct console_log *first_console_log;
struct console_log *last_console_log;
i32 console_log_color_indices[P_LogLevel_Count];
f32 console_logs_height;
b32 debug_console;
/* Window -> user */
P_Mutex sys_window_events_mutex;
Arena *sys_window_events_arena;
/* User -> local sim */
P_Mutex user_sim_cmd_mutex;
ControlData user_sim_cmd_control;
EntId user_hovered_ent;
u64 last_user_sim_cmd_gen;
u64 user_sim_cmd_gen;
Atomic32 user_paused;
Atomic32 user_paused_steps;
/* Local sim -> user */
P_Mutex local_to_user_client_mutex;
ClientStore *local_to_user_client_store;
Client *local_to_user_client;
i64 local_to_user_client_publish_dt_ns;
i64 local_to_user_client_publish_time_ns;
/* Rolling window of local sim -> user publish time deltas */
i64 last_local_to_user_snapshot_published_at_ns;
i64 average_local_to_user_snapshot_publish_dt_ns;
i64 local_sim_predicted_time_ns; /* Calculated from <last local sim to user pubilsh time> + <time since last local sim to user publish> */
i64 render_time_target_ns; /* Claculated from <local_sim_rpedicted_time_ns> - <render interp delay> */
i64 render_time_ns; /* Incremented at a constant rate based on average local to user publish delta, but snaps to render_time_target_ns if it gets too distant */
u64 local_sim_last_known_tick;
i64 local_sim_last_known_time_ns;
i64 real_dt_ns;
i64 real_time_ns;
/* Per-frame */
Vec2 screen_size;
Vec2 screen_cursor;
Xform ui_to_screen_xf;
Vec2 ui_size;
Vec2 ui_cursor;
Xform render_to_ui_xf;
Vec2 render_size;
Xform world_to_render_xf;
Xform world_to_ui_xf;
Vec2 world_cursor;
Vec2 focus_send;
} G = ZI, DebugAlias(G, G_user);
/* ========================== *
* Bind state
* ========================== */
/* TODO: Remove this */
Global Readonly enum user_bind_kind g_binds[P_Btn_Count] = {
[P_Btn_W] = USER_BIND_KIND_MOVE_UP,
[P_Btn_S] = USER_BIND_KIND_MOVE_DOWN,
[P_Btn_A] = USER_BIND_KIND_MOVE_LEFT,
[P_Btn_D] = USER_BIND_KIND_MOVE_RIGHT,
//[P_Btn_Alt] = USER_BIND_KIND_WALK,
[P_Btn_M1] = USER_BIND_KIND_FIRE,
[P_Btn_M2] = USER_BIND_KIND_FIRE_ALT,
/* Testing */
[P_Btn_Z] = USER_BIND_KIND_TILE_TEST,
[P_Btn_M5] = USER_BIND_KIND_DEBUG_DRAG,
[P_Btn_M4] = USER_BIND_KIND_DEBUG_DELETE,
[P_Btn_F] = USER_BIND_KIND_DEBUG_EXPLODE,
[P_Btn_T] = USER_BIND_KIND_DEBUG_TELEPORT,
[P_Btn_C] = USER_BIND_KIND_DEBUG_CLEAR,
[P_Btn_1] = USER_BIND_KIND_DEBUG_SPAWN1,
[P_Btn_2] = USER_BIND_KIND_DEBUG_SPAWN2,
[P_Btn_3] = USER_BIND_KIND_DEBUG_SPAWN3,
[P_Btn_4] = USER_BIND_KIND_DEBUG_SPAWN4,
[P_Btn_G] = USER_BIND_KIND_DEBUG_WALLS,
[P_Btn_N] = USER_BIND_KIND_DEBUG_STEP,
[P_Btn_Q] = USER_BIND_KIND_DEBUG_FOLLOW,
[P_Btn_F1] = USER_BIND_KIND_DEBUG_PAUSE,
[P_Btn_F2] = USER_BIND_KIND_DEBUG_CAMERA,
[P_Btn_F3] = USER_BIND_KIND_DEBUG_DRAW,
[P_Btn_F4] = USER_BIND_KIND_DEBUG_TOGGLE_TOPMOST,
[P_Btn_GraveAccent] = USER_BIND_KIND_DEBUG_CONSOLE,
[P_Btn_Alt] = USER_BIND_KIND_FULLSCREEN_MOD,
[P_Btn_Enter] = USER_BIND_KIND_FULLSCREEN,
[P_Btn_MWheelUp] = USER_BIND_KIND_ZOOM_IN,
[P_Btn_MWheelDown] = USER_BIND_KIND_ZOOM_OUT,
[P_Btn_M3] = USER_BIND_KIND_PAN,
#if RtcIsEnabled
/* Debug */
[P_Btn_ForwardSlash] = USER_BIND_KIND_RESET_DEBUG_STEPS,
[P_Btn_Comma] = USER_BIND_KIND_DECR_DEBUG_STEPS,
[P_Btn_Period] = USER_BIND_KIND_INCR_DEBUG_STEPS
#endif
};
/* ========================== *
* Startup
* ========================== */
internal P_ExitFuncDef(user_shutdown);
internal P_LogEventCallbackFuncDef(debug_console_log_callback, log);
internal P_JobDef(user_update_job, _);
internal P_JobDef(local_sim_job , _);
struct user_startup_receipt user_startup(F_StartupReceipt *font_sr,
S_StartupReceipt *sprite_sr,
D_StartupReceipt *draw_sr,
AC_StartupReceipt *asset_cache_sr,
SND_StartupReceipt *sound_sr,
M_StartupReceipt *mixer_sr,
N_StartupReceipt *host_sr,
SimStartupReceipt *sim_sr,
String connect_address_str)
{
__prof;
(UNUSED)font_sr;
(UNUSED)sprite_sr;
(UNUSED)draw_sr;
(UNUSED)asset_cache_sr;
(UNUSED)sound_sr;
(UNUSED)mixer_sr;
(UNUSED)host_sr;
(UNUSED)sim_sr;
SetGstat(GSTAT_DEBUG_STEPS, U64Max);
G.arena = AllocArena(Gibi(64));
G.real_time_ns = P_TimeNs();
/* TODO: Remove this */
G.connect_address_str = string_copy(G.arena, connect_address_str);
/* Initialize average dt to a reasonable value */
G.average_local_to_user_snapshot_publish_dt_ns = NsFromSeconds(1) / SIM_TICKS_PER_SECOND;
/* User blend clients */
G.user_client_store = sim_client_store_alloc();
G.user_unblended_client = sim_client_alloc(G.user_client_store);
G.user_blended_client = sim_client_alloc(G.user_client_store);
G.ss_blended = sim_snapshot_nil();
/* Local to user client */
G.local_to_user_client_store = sim_client_store_alloc();
G.local_to_user_client = sim_client_alloc(G.local_to_user_client_store);
/* GPU handles */
G.world_to_ui_xf = XformIdentity;
G.world_to_render_xf = XformIdentity;
G.render_sig = gp_render_sig_alloc();
G.console_logs_arena = AllocArena(Gibi(64));
//P_RegisterLogCallback(debug_console_log_callback, P_LogLevel_Success);
P_RegisterLogCallback(debug_console_log_callback, P_LogLevel_Debug);
G.window = P_AllocWindow();
G.swapchain = gp_swapchain_alloc(G.window, VEC2I32(100, 100));
P_ShowWindow(G.window);
/* Start jobs */
P_Run(1, user_update_job, 0, P_Pool_User, P_Priority_High, &G.shutdown_job_counters);
P_Run(1, local_sim_job, 0, P_Pool_Sim, P_Priority_High, &G.shutdown_job_counters);
P_OnExit(&user_shutdown);
return (struct user_startup_receipt) { 0 };
}
internal P_ExitFuncDef(user_shutdown)
{
__prof;
Atomic32FetchSet(&G.shutdown, 1);
P_WaitOnCounter(&G.shutdown_job_counters);
P_ReleaseWindow(G.window);
}
/* ========================== *
* Debug draw
* ========================== */
/* TODO: remove this (testing) */
internal void debug_draw_xform(Xform xf, u32 color_x, u32 color_y)
{
f32 thickness = 2.f;
f32 arrowhead_len = 15.f;
Vec2 pos = MulXformV2(G.world_to_ui_xf, xf.og);
Vec2 x_ray = MulXformBasisV2(G.world_to_ui_xf, RightFromXform(xf));
Vec2 y_ray = MulXformBasisV2(G.world_to_ui_xf, UpFromXform(xf));
f32 ray_scale = 1;
x_ray = MulVec2(x_ray, ray_scale);
y_ray = MulVec2(y_ray, ray_scale);
draw_arrow_ray(G.render_sig, pos, x_ray, thickness, arrowhead_len, color_x);
draw_arrow_ray(G.render_sig, pos, y_ray, thickness, arrowhead_len, color_y);
//u32 color_quad = Rgba32F(0, 1, 1, 0.3);
//Quad quad = QuadFromRect(RectFromScalar(0, 0, 1, -1));
//quad = MulXformQuad(xf, ScaleQuad(quad, 0.075f));
//draw_quad(G.render_sig, quad, color);
}
internal void debug_draw_movement(Ent *ent)
{
f32 thickness = 2.f;
f32 arrow_len = 15.f;
u32 color_vel = ColorOrange;
Xform xf = sim_ent_get_xform(ent);
Vec2 velocity = ent->linear_velocity;
Vec2 pos = MulXformV2(G.world_to_ui_xf, xf.og);
Vec2 vel_ray = MulXformBasisV2(G.world_to_ui_xf, velocity);
if (Vec2Len(vel_ray) > 0.00001) {
draw_arrow_ray(G.render_sig, pos, vel_ray, thickness, arrow_len, color_vel);
}
}
internal String get_ent_debug_text(Arena *arena, Ent *ent)
{
TempArena scratch = BeginScratch(arena);
Snapshot *ss = ent->ss;
const u8 hex[] = "0123456789abcdef";
String res = ZI;
res.text = PushDry(arena, u8);
res.len += string_format(arena, LIT("[%F]"), FMT_UID(ent->id.uid)).len;
{
b32 transmitting = sim_ent_has_prop(ent, SEPROP_SYNC_SRC);
b32 receiving = sim_ent_has_prop(ent, SEPROP_SYNC_DST);
if (transmitting & receiving) {
res.len += string_copy(arena, LIT(" networked (sending & receiving)")).len;
} else if (transmitting) {
res.len += string_copy(arena, LIT(" networked (sending)")).len;
} else if (receiving) {
res.len += string_copy(arena, LIT(" networked (receiving)")).len;
} else {
res.len += string_copy(arena, LIT(" local")).len;
}
}
res.len += string_copy(arena, LIT("\n")).len;
res.len += string_format(arena, LIT("owner: [%F]\n"), FMT_UID(ent->owner.uid)).len;
res.len += string_copy(arena, LIT("\n")).len;
{
res.len += string_copy(arena, LIT("props: 0x")).len;
for (u64 chunk_index = countof(ent->props); chunk_index-- > 0;) {
u64 chunk = ent->props[chunk_index];
for (u64 part_index = 8; part_index-- > 0;) {
if ((chunk_index != (countof(ent->props) - 1)) || ((chunk_index * 64) + (part_index * 8)) <= SEPROP_COUNT) {
u8 part = (chunk >> (part_index * 8)) & 0xFF;
string_from_char(arena, hex[(part >> 4) & 0x0F]);
string_from_char(arena, hex[(part >> 0) & 0x0F]);
res.len += 2;
}
}
}
res.len += string_copy(arena, LIT("\n")).len;
}
if (!sim_ent_id_eq(ent->parent, SIM_ENT_ROOT_ID)) {
res.len += string_format(arena, LIT("parent: [%F]\n"), FMT_UID(ent->parent.uid)).len;
}
if (!sim_ent_id_is_nil(ent->next) || !sim_ent_id_is_nil(ent->prev)) {
res.len += string_format(arena, LIT("prev: [%F]\n"), FMT_UID(ent->prev.uid)).len;
res.len += string_format(arena, LIT("next: [%F]\n"), FMT_UID(ent->next.uid)).len;
}
res.len += string_copy(arena, LIT("\n")).len;
/* Pos */
Xform xf = sim_ent_get_xform(ent);
Vec2 linear_velocity = ent->linear_velocity;
f32 angular_velocity = ent->angular_velocity;
res.len += string_format(arena, LIT("pos: (%F, %F)\n"), FMT_FLOAT(xf.og.x), FMT_FLOAT(xf.og.y)).len;
res.len += string_format(arena, LIT("linear velocity: (%F, %F)\n"), FMT_FLOAT(linear_velocity.x), FMT_FLOAT(linear_velocity.y)).len;
res.len += string_format(arena, LIT("angular velocity: %F\n"), FMT_FLOAT(angular_velocity)).len;
/* Test */
res.len += string_format(arena, LIT("collision dir: (%F, %F)\n"), FMT_FLOAT(ent->collision_dir.x), FMT_FLOAT(ent->collision_dir.y)).len;
/* Children */
if (!sim_ent_id_is_nil(ent->first) || !sim_ent_id_is_nil(ent->last)) {
Ent *child = sim_ent_from_id(ss, ent->first);
if (!sim_ent_id_eq(ent->first, ent->last) || !child->valid) {
res.len += string_format(arena, LIT("first child: [%F]\n"), FMT_UID(ent->first.uid)).len;
res.len += string_format(arena, LIT("last child: [%F]\n"), FMT_UID(ent->last.uid)).len;
}
while (child->valid) {
res.len += string_copy(arena, LIT("\n---------------------------------\n")).len;
res.len += string_copy(arena, LIT("CHILD\n")).len;
String child_text = get_ent_debug_text(scratch.arena, child);
res.len += string_indent(arena, child_text, 4).len;
child = sim_ent_from_id(ss, child->next);
}
}
EndScratch(scratch);
return res;
}
/* ========================== *
* Debug console
* ========================== */
internal P_LogEventCallbackFuncDef(debug_console_log_callback, log)
{
__prof;
P_Lock lock = P_LockE(&G.console_logs_mutex);
{
struct console_log *clog = PushStruct(G.console_logs_arena, struct console_log);
clog->level = log.level;
clog->msg = string_copy(G.console_logs_arena, log.msg);
clog->datetime = log.datetime;
clog->time_ns = log.time_ns;
if (G.last_console_log) {
G.last_console_log->next = clog;
clog->prev = G.last_console_log;
/* Alternating color index between logs of same level */
i32 *color_index = &G.console_log_color_indices[log.level];
clog->color_index = *color_index;
*color_index = 1 - *color_index;
} else {
G.first_console_log = clog;
}
G.last_console_log = clog;
}
P_Unlock(&lock);
}
internal void draw_debug_console(i32 level, b32 minimized)
{
__prof;
TempArena scratch = BeginScratchNoConflict();
Vec2 desired_start_pos = VEC2(10, minimized ? 100 : 600);
i64 fade_time_ns = NsFromSeconds(10);
f32 fade_curve = 0.5;
f32 spacing = 0;
f32 bg_margin = 5;
LocalPersist u32 colors[P_LogLevel_Count][2] = ZI;
SetBytes(colors, 0xFF, sizeof(colors));
#if 1
colors[P_LogLevel_Debug][0] = Rgb32F(0.4, 0.1, 0.4); colors[P_LogLevel_Debug][1] = Rgb32F(0.5, 0.2, 0.5);
colors[P_LogLevel_Info][0] = Rgb32F(0.4, 0.4, 0.4); colors[P_LogLevel_Info][1] = Rgb32F(0.5, 0.5, 0.5);
colors[P_LogLevel_Success][0] = Rgb32F(0.1, 0.3, 0.1); colors[P_LogLevel_Success][1] = Rgb32F(0.2, 0.4, 0.2);
colors[P_LogLevel_Warning][0] = Rgb32F(0.4, 0.4, 0.1); colors[P_LogLevel_Warning][1] = Rgb32F(0.5, 0.5, 0.2);
colors[P_LogLevel_Error][0] = Rgb32F(0.4, 0.1, 0.1); colors[P_LogLevel_Error][1] = Rgb32F(0.5, 0.2, 0.2);
#else
u32 info_colors[2] = { Rgb32F(0.4, 0.4, 0.4), Rgb32F(0.5, 0.5, 0.5) };
u32 success_colors[2] = { Rgb32F(0.1, 0.3, 0.1), Rgb32F(0.2, 0.4, 0.2) };
u32 warning_colors[2] = { Rgb32F(0.4, 0.4, 0.1), Rgb32F(0.5, 0.5, 0.2) };
u32 error_colors[2] = { Rgb32F(0.4, 0.1, 0.1), Rgb32F(0.5, 0.2, 0.2) };
#endif
Vec2 draw_pos = desired_start_pos;
f32 bounds_top = F32Infinity;
f32 bounds_bottom = -F32Infinity;
if (G.console_logs_height < desired_start_pos.y) {
draw_pos.y = G.console_logs_height;
}
G.console_logs_height = 0;
i64 now_ns = P_TimeNs();
F_Font *font = font_load_async(LIT("font/fixedsys.ttf"), 12.0f);
if (font) {
P_Lock lock = P_LockE(&G.console_logs_mutex);
{
for (struct console_log *log = G.last_console_log; log; log = log->prev) {
f32 opacity = 0.75;
if (minimized) {
f32 lin = 1.0 - ClampF64((f64)(now_ns - log->time_ns) / (f64)fade_time_ns, 0, 1);
opacity *= PowF32(lin, fade_curve);
}
if (draw_pos.y > -desired_start_pos.y && opacity > 0) {
if (log->level <= level) {
/* Draw background */
u32 color = colors[log->level][log->color_index];
draw_quad(G.render_sig, QuadFromRect(log->bounds), Alpha32F(color, opacity));
/* Draw text */
String text = log->msg;
if (!minimized) {
P_DateTime datetime = log->datetime;
text = string_format(
scratch.arena,
LIT("[%F:%F:%F.%F] %F"),
FMT_UINT_Z(datetime.hour, 2),
FMT_UINT_Z(datetime.minute, 2),
FMT_UINT_Z(datetime.second, 2),
FMT_UINT_Z(datetime.milliseconds, 3),
FMT_STR(text));
}
D_TextParams params = DRAW_TEXT_PARAMS(.font = font, .pos = draw_pos, .offset_y = DRAW_TEXT_OFFSET_Y_BOTTOM, .color = Alpha32F(ColorWhite, opacity), .str = text);
Rect bounds = draw_text(G.render_sig, params);
Rect draw_bounds = bounds;
draw_bounds.x -= bg_margin;
draw_bounds.y -= bg_margin;
draw_bounds.width += bg_margin * 2.f;
draw_bounds.height += bg_margin * 2.f;
draw_pos.y -= draw_bounds.height + spacing;
log->bounds = draw_bounds;
bounds_top = MinF32(bounds_top, draw_bounds.y);
bounds_bottom = MaxF32(bounds_bottom, draw_bounds.y + draw_bounds.height);
}
} else {
break;
}
}
}
P_Unlock(&lock);
}
if (bounds_top < F32Infinity && bounds_bottom > -F32Infinity) {
G.console_logs_height = bounds_bottom - bounds_top;
}
EndScratch(scratch);
}
/* ========================== *
* Sort entities
* ========================== */
internal SORT_COMPARE_FUNC_DEF(ent_draw_order_cmp, arg_a, arg_b, udata)
{
(UNUSED)udata;
Ent *a = *(Ent **)arg_a;
Ent *b = *(Ent **)arg_b;
i32 res = 0;
if (res == 0) {
/* Sort by light */
b32 a_cmp = sim_ent_has_prop(a, SEPROP_LIGHT_TEST);
b32 b_cmp = sim_ent_has_prop(b, SEPROP_LIGHT_TEST);
res = (a_cmp > b_cmp) - (a_cmp < b_cmp);
}
if (res == 0) {
/* Sort by layer */
i32 a_cmp = a->layer;
i32 b_cmp = b->layer;
res = (a_cmp < b_cmp) - (a_cmp > b_cmp);
}
if (res == 0) {
/* Sort by sprite */
u64 a_cmp = a->sprite.hash;
u64 b_cmp = b->sprite.hash;
res = (a_cmp < b_cmp) - (a_cmp > b_cmp);
}
if (res == 0) {
/* Sort by activation */
u64 a_cmp = a->activation_tick;
u64 b_cmp = b->activation_tick;
res = (a_cmp < b_cmp) - (a_cmp > b_cmp);
}
return res;
}
/* ========================== *
* Update
* ========================== */
internal void user_update(P_Window *window)
{
__prof;
TempArena scratch = BeginScratchNoConflict();
/* ========================== *
* Begin frame
* ========================== */
G.real_dt_ns = P_TimeNs() - G.real_time_ns;
G.real_time_ns += G.real_dt_ns;
G.screen_size = P_GetWindowSize(window);
S_Scope *sprite_frame_scope = sprite_scope_begin();
/* ========================== *
* Pull latest local sim snapshot
* ========================== */
{
__profn("Pull snapshot");
P_Lock lock = P_LockE(&G.local_to_user_client_mutex);
u64 old_last_tick = G.user_unblended_client->last_tick;
u64 last_tick = G.local_to_user_client->last_tick;
if (last_tick > old_last_tick) {
Snapshot *src = sim_snapshot_from_tick(G.local_to_user_client, last_tick);
sim_snapshot_alloc(G.user_unblended_client, src, src->tick);
G.last_local_to_user_snapshot_published_at_ns = G.local_to_user_client_publish_time_ns;
G.average_local_to_user_snapshot_publish_dt_ns -= G.average_local_to_user_snapshot_publish_dt_ns / 50;
G.average_local_to_user_snapshot_publish_dt_ns += G.local_to_user_client_publish_dt_ns / 50;
}
P_Unlock(&lock);
}
/* ========================== *
* Create user world from blended snapshots
* ========================== */
{
__profn("Blend snapshots");
/* How along are we between sim ticks (0 = start of tick, 1 = end of tick) */
f64 tick_progress = 0;
i64 next_tick_expected_ns = G.last_local_to_user_snapshot_published_at_ns + G.average_local_to_user_snapshot_publish_dt_ns;
if (next_tick_expected_ns > G.last_local_to_user_snapshot_published_at_ns) {
tick_progress = (f64)(G.real_time_ns - G.last_local_to_user_snapshot_published_at_ns) / (f64)(next_tick_expected_ns - G.last_local_to_user_snapshot_published_at_ns);
}
/* Predict local sim time based on average snapshot publish dt. */
Snapshot *newest_snapshot = sim_snapshot_from_tick(G.user_unblended_client, G.user_unblended_client->last_tick);
G.local_sim_last_known_time_ns = newest_snapshot->sim_time_ns;
G.local_sim_last_known_tick = newest_snapshot->tick;
if (Atomic32Fetch(&G.user_paused)) {
G.local_sim_predicted_time_ns = G.local_sim_last_known_tick;
} else {
G.local_sim_predicted_time_ns = newest_snapshot->sim_time_ns + (newest_snapshot->sim_dt_ns * tick_progress);
}
if (USER_INTERP_ENABLED && !Atomic32Fetch(&G.user_paused)) {
/* Determine render time */
G.render_time_target_ns = G.local_sim_predicted_time_ns - (USER_INTERP_RATIO * G.average_local_to_user_snapshot_publish_dt_ns);
if (G.average_local_to_user_snapshot_publish_dt_ns > 0) {
/* Increment render time based on average publish dt */
f64 sim_publish_timescale = (f64)newest_snapshot->sim_dt_ns / (f64)G.average_local_to_user_snapshot_publish_dt_ns;
G.render_time_ns += G.real_dt_ns * sim_publish_timescale;
}
i64 render_time_target_diff_ns = G.render_time_target_ns - G.render_time_ns;
if (render_time_target_diff_ns > NsFromSeconds(0.010) || render_time_target_diff_ns < NsFromSeconds(-0.005)) {
/* Snap render time if it gets too out of sync with target render time */
G.render_time_ns = G.render_time_target_ns;
}
/* Get two snapshots nearest to render time */
Snapshot *left_snapshot = sim_snapshot_nil();
Snapshot *right_snapshot = newest_snapshot;
{
Snapshot *ss = sim_snapshot_from_tick(G.user_unblended_client, G.user_unblended_client->first_tick);
while (ss->valid) {
u64 next_tick = ss->next_tick;
i64 ss_time_ns = ss->sim_time_ns;
if (ss_time_ns < G.render_time_ns && ss_time_ns > left_snapshot->sim_time_ns) {
left_snapshot = ss;
}
if (ss_time_ns > G.render_time_ns && ss_time_ns < right_snapshot->sim_time_ns) {
right_snapshot = ss;
}
ss = sim_snapshot_from_tick(G.user_unblended_client, next_tick);
}
}
/* Create world from blended snapshots */
if (left_snapshot->valid && right_snapshot->valid) {
f64 blend = (f64)(G.render_time_ns - left_snapshot->sim_time_ns) / (f64)(right_snapshot->sim_time_ns - left_snapshot->sim_time_ns);
G.ss_blended = sim_snapshot_alloc_from_lerp(G.user_blended_client, left_snapshot, right_snapshot, blend);
} else if (left_snapshot->valid) {
G.ss_blended = sim_snapshot_alloc(G.user_blended_client, left_snapshot, left_snapshot->tick);
} else if (right_snapshot->valid) {
G.ss_blended = sim_snapshot_alloc(G.user_blended_client, right_snapshot, right_snapshot->tick);
}
/* Release unneeded unblended snapshots */
if (left_snapshot->tick > 0) {
sim_snapshot_release_ticks_in_range(G.user_unblended_client, 0, left_snapshot->tick - 1);
}
} else {
/* Interp disabled, just copy latest snapshot */
G.render_time_target_ns = newest_snapshot->sim_time_ns;
G.render_time_ns = newest_snapshot->sim_time_ns;
G.ss_blended = sim_snapshot_alloc(G.user_blended_client, newest_snapshot, newest_snapshot->tick);
/* Release unneeded unblended snapshots */
if (newest_snapshot->tick > 0) {
sim_snapshot_release_ticks_in_range(G.user_unblended_client, 0, newest_snapshot->tick - 1);
}
}
/* Release unneeded blended snapshots */
if (G.ss_blended->tick > 0) {
sim_snapshot_release_ticks_in_range(G.user_blended_client, 0, G.ss_blended->tick - 1);
sim_snapshot_release_ticks_in_range(G.user_blended_client, G.ss_blended->tick + 1, U64Max);
}
}
/* ========================== *
* Process sys events into user bind state
* ========================== */
{
__profn("Process sys events");
P_WindowEventArray events = P_PopWindowEvents(scratch.arena, window);
/* Reset bind pressed / released states */
for (u32 i = 0; i < countof(G.bind_states); ++i) {
G.bind_states[i] = (struct bind_state) {
.is_held = G.bind_states[i].is_held
};
}
for (u64 ent_index = 0; ent_index < events.count; ++ent_index) {
P_WindowEvent *event = &events.events[ent_index];
if (event->kind == P_WindowEventKind_Quit) {
P_Exit();
}
if (event->kind == P_WindowEventKind_ButtonUp) {
/* Escape quit */
if (event->button == P_Btn_ESC) {
P_Exit();
}
}
/* Update mouse pos */
if (event->kind == P_WindowEventKind_CursorMove) {
G.screen_cursor = event->cursor_position;
}
/* Update bind states */
if ((event->kind == P_WindowEventKind_ButtonDown|| event->kind == P_WindowEventKind_ButtonUp)) {
P_Btn button = event->button;
button = button >= P_Btn_Count ? P_Btn_None : button;
enum user_bind_kind bind = g_binds[button];
if (bind) {
b32 pressed = event->kind == P_WindowEventKind_ButtonDown;
#if 0
b32 out_of_bounds = button >= P_Btn_M1 && button <= P_Btn_M5 &&
(G.ui_cursor.x < 0 ||
G.ui_cursor.y < 0 ||
G.ui_cursor.x > G.ui_size.x ||
G.ui_cursor.y > G.ui_size.y);
#else
b32 out_of_bounds = 0;
#endif
G.bind_states[bind].is_held = pressed && !out_of_bounds;
if (pressed) {
if (!out_of_bounds) {
++G.bind_states[bind].num_presses_and_repeats;
if (event->is_repeat) {
++G.bind_states[bind].num_repeats;
} else {
++G.bind_states[bind].num_presses;
}
}
} else {
++G.bind_states[bind].num_releases;
}
}
}
}
}
/* ========================== *
* Find local entities
* ========================== */
Ent *local_player = sim_ent_from_id(G.ss_blended, G.ss_blended->local_player);
Ent *local_control = sim_ent_from_id(G.ss_blended, local_player->player_control_ent);
Ent *local_camera = sim_ent_from_id(G.ss_blended, local_player->player_camera_ent);
/* ========================== *
* Find hovered entity
* ========================== */
Ent *hovered_ent = sim_ent_nil();
{
Xform mouse_xf = XformFromPos(G.world_cursor);
CLD_Shape mouse_shape = ZI;
mouse_shape.points[0] = VEC2(0, 0);
mouse_shape.count = 1;
mouse_shape.radius = 0.01f;
for (u64 ent_index = 0; ent_index < G.ss_blended->num_ents_reserved; ++ent_index) {
Ent *ent = &G.ss_blended->ents[ent_index];
if (!sim_ent_is_valid_and_active(ent)) continue;
CLD_Shape ent_collider = ent->local_collider;
if (ent_collider.count > 0) {
/* TODO: Can just use boolean GJK */
Xform ent_xf = sim_ent_get_xform(ent);
CLD_CollisionResult res = collider_collision_points(&ent_collider, &mouse_shape, ent_xf, mouse_xf);
if (res.num_points > 0) {
hovered_ent = sim_ent_from_id(G.ss_blended, ent->top);
break;
}
}
}
}
/* ========================== *
* Update user state from binds
* ========================== */
/* Test fullscreen */
{
if (G.bind_states[USER_BIND_KIND_FULLSCREEN].num_presses && G.bind_states[USER_BIND_KIND_FULLSCREEN_MOD].is_held) {
P_WindowSettings settings = P_GetWindowSettings(window);
settings.flags ^= P_WindowSettingsFlag_Fullscreen;
P_UpdateWindowSettings(window, &settings);
}
}
if (G.bind_states[USER_BIND_KIND_DEBUG_DRAW].num_presses > 0) {
G.debug_draw = !G.debug_draw;
}
if (G.bind_states[USER_BIND_KIND_DEBUG_TOGGLE_TOPMOST].num_presses > 0) {
P_ToggleWindowTopmost(window);
P_LogSuccessF("Toggle topmost");
}
if (G.bind_states[USER_BIND_KIND_DEBUG_CONSOLE].num_presses > 0) {
G.debug_console = !G.debug_console;
}
if (G.bind_states[USER_BIND_KIND_DEBUG_CAMERA].num_presses > 0) {
G.debug_camera = !G.debug_camera;
}
{
if (G.bind_states[USER_BIND_KIND_DEBUG_FOLLOW].num_presses > 0) {
if (sim_ent_id_is_nil(G.debug_following)) {
G.debug_following = hovered_ent->id;
} else {
G.debug_following = SIM_ENT_NIL_ID;
}
}
if (!sim_ent_id_is_nil(G.debug_following)) {
Ent *follow_ent = sim_ent_from_id(G.ss_blended, G.debug_following);
Ent *follow_camera = sim_ent_nil();
for (u64 i = 0; i < G.ss_blended->num_ents_reserved; ++i) {
Ent *ent = &G.ss_blended->ents[i];
Ent *ent_camera_follow = sim_ent_from_id(G.ss_blended, ent->camera_follow);
if (ent_camera_follow->valid && ent_camera_follow == follow_ent) {
follow_camera = ent;
break;
}
}
if (follow_camera->valid) {
local_camera = follow_camera;
} else {
G.debug_following = SIM_ENT_NIL_ID;
}
}
}
/* ========================== *
* Apply shake
* ========================== */
for (u64 ent_index = 0; ent_index < G.ss_blended->num_ents_reserved; ++ent_index) {
Ent *ent = &G.ss_blended->ents[ent_index];
if (!sim_ent_is_valid_and_active(ent)) continue;
/* How much time between camera shakes */
i64 frequency_ns = NsFromSeconds(0.01f);
f32 shake = ent->shake;
if (shake > 0) {
u64 angle_seed0 = ent->id.uid.lo + (u64)(G.ss_blended->sim_time_ns / frequency_ns);
u64 angle_seed1 = angle_seed0 + 1;
f32 angle0 = rand_f64_from_seed(angle_seed0, 0, Tau);
f32 angle1 = rand_f64_from_seed(angle_seed1, 0, Tau);
Vec2 vec0 = Vec2WithLen(Vec2FromAngle(angle0), shake);
/* NOTE: vec1 not completely accurate since shake can change between frames, it's just a prediction */
Vec2 vec1 = Vec2WithLen(Vec2FromAngle(angle1), shake);
/* TODO: Cubic interp? */
f32 blend = (f32)(G.ss_blended->sim_time_ns % frequency_ns) / (f32)frequency_ns;
Vec2 vec = LerpVec2(vec0, vec1, blend);
Xform xf = sim_ent_get_xform(ent);
xf.og = AddVec2(xf.og, MulVec2(vec, shake));
sim_ent_set_xform(ent, xf);
}
}
/* ========================== *
* Update ui to screen xform from screen size
* ========================== */
if (G.debug_camera) {
G.ui_size = G.screen_size;
G.ui_to_screen_xf = XformIdentity;
G.ui_to_screen_xf.og = RoundVec2(G.ui_to_screen_xf.og);
} else {
/* Determine ui size by camera & window dimensions */
f32 aspect_ratio = (f32)(DEFAULT_CAMERA_WIDTH / DEFAULT_CAMERA_HEIGHT);
if (local_camera->valid) {
Xform quad_xf = MulXform(sim_ent_get_xform(local_camera), local_camera->camera_quad_xform);
Vec2 camera_size = ScaleFromXform(quad_xf);
if (!IsVec2Zero(camera_size)) {
aspect_ratio = camera_size.x / camera_size.y;
}
}
f32 width = G.screen_size.x;
f32 height = G.screen_size.y;
if (width / height > aspect_ratio) {
width = height * aspect_ratio;
} else {
height = CeilF32(width / aspect_ratio);
}
G.ui_size = VEC2(width, height);
/* Center ui in window */
f32 x = RoundF32(G.screen_size.x / 2 - width / 2);
f32 y = RoundF32(G.screen_size.y / 2 - height / 2);
G.ui_to_screen_xf = XformFromTrs(TRS(.t = VEC2(x, y)));
G.ui_to_screen_xf.og = RoundVec2(G.ui_to_screen_xf.og);
}
G.ui_cursor = MulXformV2(InvertXform(G.ui_to_screen_xf), G.screen_cursor);
/* ========================== *
* Update world to ui xform from camera
* ========================== */
if (G.debug_camera) {
G.world_to_ui_xf = XformWIthWorldRotation(G.world_to_ui_xf, 0);
Vec2 world_cursor = InvertXformMulV2(G.world_to_ui_xf, G.ui_cursor);
/* Pan view */
if (G.bind_states[USER_BIND_KIND_PAN].is_held) {
if (!G.debug_camera_panning) {
G.debug_camera_pan_start = world_cursor;
G.debug_camera_panning = 1;
}
Vec2 offset = NegVec2(SubVec2(G.debug_camera_pan_start, world_cursor));
G.world_to_ui_xf = TranslateXform(G.world_to_ui_xf, offset);
world_cursor = InvertXformMulV2(G.world_to_ui_xf, G.ui_cursor);
G.debug_camera_pan_start = world_cursor;
} else {
G.debug_camera_panning = 0;
}
/* Zoom view */
i32 input_zooms = G.bind_states[USER_BIND_KIND_ZOOM_IN].num_presses - G.bind_states[USER_BIND_KIND_ZOOM_OUT].num_presses;
if (input_zooms != 0) {
/* Zoom to cursor */
f32 zoom_rate = 2;
f32 zoom = PowF32(zoom_rate, input_zooms);
G.world_to_ui_xf = TranslateXform(G.world_to_ui_xf, world_cursor);
G.world_to_ui_xf = ScaleXform(G.world_to_ui_xf, VEC2(zoom, zoom));
G.world_to_ui_xf = TranslateXform(G.world_to_ui_xf, NegVec2(world_cursor));
}
G.world_to_ui_xf.og = RoundVec2(G.world_to_ui_xf.og);
} else {
Xform xf = sim_ent_get_xform(local_camera);
Vec2 world_center = xf.og;
f32 rot = RotationFromXform(xf);
/* Scale view into viewport based on camera size */
Vec2 scale = G.ui_size;
{
Xform quad_xf = MulXform(xf, local_camera->camera_quad_xform);
Vec2 camera_size = ScaleFromXform(quad_xf);
if (!IsVec2Zero(camera_size)) {
scale = DivVec2Vec2(G.ui_size, camera_size);
}
}
scale.x = MinF32(scale.x, scale.y);
scale.y = scale.x;
Vec2 ui_center = MulVec2(G.ui_size, 0.5);
Trs trs = TRS(.t = SubVec2(ui_center, world_center), .r = rot, .s = scale);
Vec2 pivot = world_center;
G.world_to_ui_xf = XformIdentity;
G.world_to_ui_xf = TranslateXform(G.world_to_ui_xf, pivot);
G.world_to_ui_xf = TranslateXform(G.world_to_ui_xf, trs.t);
G.world_to_ui_xf = RotateXform(G.world_to_ui_xf, trs.r);
G.world_to_ui_xf = ScaleXform(G.world_to_ui_xf, trs.s);
G.world_to_ui_xf = TranslateXform(G.world_to_ui_xf, NegVec2(pivot));
G.world_to_ui_xf.og = RoundVec2(G.world_to_ui_xf.og);
}
G.world_cursor = InvertXformMulV2(G.world_to_ui_xf, G.ui_cursor);
/* ========================== *
* Update world to render xform from world to ui xform
* ========================== */
b32 effects_disabled = 0;
G.render_size = RoundVec2(VEC2(RENDER_WIDTH, RENDER_HEIGHT));
if (G.debug_camera) {
G.render_size = G.ui_size;
effects_disabled = 1;
G.world_to_render_xf = G.world_to_ui_xf;
} else {
Xform ui_to_world_xf = InvertXform(G.world_to_ui_xf);
Vec2 world_center = MulXformV2(ui_to_world_xf, MulVec2(G.ui_size, 0.5));
Vec2 scale = VEC2(PIXELS_PER_UNIT, PIXELS_PER_UNIT);
Xform xf = XformIdentity;
xf = TranslateXform(xf, MulVec2(G.render_size, 0.5));
xf = ScaleXform(xf, scale);
xf = TranslateXform(xf, MulVec2(world_center, -1));
xf.og = RoundVec2(xf.og);
G.world_to_render_xf = xf;
}
/* ========================== *
* Update render to ui xform
* ========================== */
{
Xform world_to_ui_xf = G.world_to_ui_xf;
Xform world_to_render_xf = G.world_to_render_xf;
Xform render_to_world_xf = InvertXform(world_to_render_xf);
Xform render_to_ui_xf = MulXform(world_to_ui_xf, render_to_world_xf);
G.render_to_ui_xf = render_to_ui_xf;
}
/* ========================== *
* Update listener from view
* ========================== */
{
Vec2 up = VEC2(0, -1);
Vec2 ui_center = MulVec2(G.ui_size, 0.5f);
Vec2 listener_pos = InvertXformMulV2(G.world_to_ui_xf, ui_center);
Vec2 listener_dir = NormVec2(InvertXformBasisMulV2(G.world_to_ui_xf, up));
mixer_set_listener(listener_pos, listener_dir);
}
/* ========================== *
* Draw grid
* ========================== */
{
f32 thickness = 2;
Vec2 offset = NegVec2(MulXformV2(G.world_to_render_xf, VEC2(0, 0)));
f32 spacing = ScaleFromXform(G.world_to_render_xf).x;
Vec2 pos = InvertXformMulV2(G.world_to_render_xf, VEC2(0, 0));
Vec2 size = InvertXformBasisMulV2(G.world_to_render_xf, G.render_size);
u32 color0 = Rgba32F(0.17f, 0.17f, 0.17f, 1.f);
u32 color1 = Rgba32F(0.15f, 0.15f, 0.15f, 1.f);
draw_grid(G.render_sig, XformFromRect(RectFromVec2(pos, size)), color0, color1, Rgba32(0x3f, 0x3f, 0x3f, 0xFF), ColorRed, ColorGreen, thickness, spacing, offset);
}
#if 0
/* ========================== *
* Alloc / release tile cache entries
* ========================== */
/* Alloc entries from new sim chunks */
for (u64 ent_index = 0; ent_index < G.ss_blended->num_ents_reserved; ++ent_index) {
Ent *chunk_ent = &G.ss_blended->ents[ent_index];
if (sim_ent_is_valid_and_active(chunk_ent) && sim_ent_has_prop(chunk_ent, SEPROP_TILE_CHUNK)) {
struct user_tile_cache_entry *entry = user_tile_cache_entry_from_chunk_pos(chunk_ent->tile_chunk_pos);
if (!entry->valid) {
entry = user_tile_cache_entry_alloc(chunk_ent->tile_chunk_pos);
}
}
}
/* Release entries with invalid sim chunks */
for (u64 entry_index = 0; entry_index < G.tile_cache.num_reserved_entries; ++entry_index) {
struct tile_cache_entry *entry = &G.tile_cache.entries[entry_index];
if (entry->valid) {
Ent *chunk_ent = sim_ent_from_chunk_pos(entry->pos);
if (!chunk_ent->valid) {
user_tile_cache_entry_release(entry);
}
}
}
/* ========================== *
* Draw dirty tile cache entries
* ========================== */
for (u64 entry_index = 0; entry_index < G.tile_cache.num_reserved_entries; ++entry_index) {
struct tile_cache_entry *entry = &G.tile_cache.entries[entry_index];
if (entry->valid) {
Vec2I32 chunk_pos = entry->pos;
Ent *chunk_ent = sim_ent_from_chunk_pos(chunk_pos);
if (entry->applied_dirty_gen != chunk_ent->dirty_gen) {
entry->applied_dirty_gen = chunk_ent->dirty_gen;
/* TODO: Autotiling */
String data = sim_ent_get_chunk_tile_data(chunk_ent);
u64 tile_count = data.len;
if (tile_count == SIM_TILES_PER_CHUNK_SQRT * SIM_TILES_PER_CHUNK_SQRT) {
for (u64 y_in_chunk = 0; y_in_chunk < SIM_TILES_PER_CHUNK_SQRT; ++y_in_chunk) {
for (u64 x_in_chunk = 0; x_in_chunk < SIM_TILES_PER_CHUNK_SQRT; ++x_in_chunk) {
}
}
} else {
/* TODO: Clear gpu buffer if it exists */
}
}
}
}
#if 0
for (u64 entry_index = 0; entry_index < G.tile_cache.num_reserved_entries; ++entry_index) {
struct tile_cache_entry *entry = &G.tile_cache.entries[entry_index];
if (entry->valid) {
Vec2I32 chunk_pos = entry->pos;
Ent *chunk_ent = sim_ent_from_chunk_pos(chunk_pos);
if (entry->applied_dirty_gen != chunk_ent->dirty_gen) {
entry->applied_dirty_gen = chunk_ent->dirty_gen;
/* Retreive surrounding chunk info since we're auto-tiling
* [TL] [T] [TR]
* [L ] X [R ]
* [BL] [B] [BR]
*/
Vec2I32 chunk_pos_tl = VEC2I32(chunk_pos.x - 1, chunk_pos.y - 1);
Vec2I32 chunk_pos_t = VEC2I32(chunk_pos.x, chunk_pos.y - 1);
Vec2I32 chunk_pos_tr = VEC2I32(chunk_pos.x + 1, chunk_pos.y - 1);
Vec2I32 chunk_pos_l = VEC2I32(chunk_pos.x - 1, chunk_pos.y);
Vec2I32 chunk_pos_r = VEC2I32(chunk_pos.x + 1, chunk_pos.y);
Vec2I32 chunk_pos_bl = VEC2I32(chunk_pos.x - 1, chunk_pos.y + 1);
Vec2I32 chunk_pos_b = VEC2I32(chunk_pos.x, chunk_pos.y + 1);
Vec2I32 chunk_pos_br = VEC2I32(chunk_pos.x + 1, chunk_pos.y + 1);
Ent *chunk_ent_tl = sim_ent_from_chunk_pos(chunk_pos_tl);
Ent *chunk_ent_t = sim_ent_from_chunk_pos(chunk_pos_t);
Ent *chunk_ent_tr = sim_ent_from_chunk_pos(chunk_pos_tr);
Ent *chunk_ent_l = sim_ent_from_chunk_pos(chunk_pos_l);
Ent *chunk_ent_r = sim_ent_from_chunk_pos(chunk_pos_r);
Ent *chunk_ent_bl = sim_ent_from_chunk_pos(chunk_pos_bl);
Ent *chunk_ent_b = sim_ent_from_chunk_pos(chunk_pos_b);
Ent *chunk_ent_br = sim_ent_from_chunk_pos(chunk_pos_br);
String data = sim_ent_get_chunk_tile_data(chunk_ent);
//for (u64 x = 0; x <
}
}
}
#endif
#endif
/* ========================== *
* Sort drawable entities
* ========================== */
Ent **sorted = PushDry(scratch.arena, Ent *);
u64 sorted_count = 0;
{
/* CopyStruct valid entities */
{
__profn("Build ents list for sorting");
for (u64 ent_index = 0; ent_index < G.ss_blended->num_ents_reserved; ++ent_index) {
Ent *ent = &G.ss_blended->ents[ent_index];
if (sim_ent_is_valid_and_active(ent)) {
*PushStructNoZero(scratch.arena, Ent *) = ent;
++sorted_count;
}
}
}
/* Sort */
{
__profn("Sort ents");
merge_sort(sorted, sorted_count, sizeof(*sorted), ent_draw_order_cmp, 0);
}
}
/* ========================== *
* Draw entities
* ========================== */
{
__profn("Draw entities");
for (u64 sorted_index = 0; sorted_index < sorted_count; ++sorted_index) {
Ent *ent = sorted[sorted_index];
if (!sim_ent_is_valid_and_active(ent)) continue;
//if (sprite_tag_is_nil(ent->sprite)) continue;
S_Tag sprite = ent->sprite;
Ent *parent = sim_ent_from_id(G.ss_blended, ent->parent);
Xform xf = sim_ent_get_xform(ent);
Xform parent_xf = sim_ent_get_xform(parent);
b32 skip_debug_draw = !G.debug_camera && ent == local_camera;
skip_debug_draw = skip_debug_draw || sim_ent_has_prop(ent, SEPROP_MOTOR_JOINT);
b32 skip_debug_draw_transform = sim_ent_has_prop(ent, SEPROP_CAMERA);
skip_debug_draw_transform = 1;
Xform sprite_xform = MulXform(xf, ent->sprite_local_xform);
/* Draw tracer */
/* TODO: Enable this */
#if 0
if (sim_ent_has_prop(ent, SEPROP_TRACER)) {
Vec2 velocity = ent->tracer_start_velocity;
Vec2 a = ent->tracer_start;
Vec2 b = xf.og;
Vec2 c = ent->tracer_gradient_start;
Vec2 d = ent->tracer_gradient_end;
Vec2 vcd = SubVec2(d, c);
Vec2 vca = SubVec2(a, c);
Vec2 vdb = SubVec2(b, d);
Vec2 vdc = NegVec2(vcd);
f32 opacity_a = 1;
f32 opacity_b = 1;
if (Vec2LenSq(vcd) != 0) {
if (DotVec2(velocity, vca) <= 0) {
a = c;
opacity_a = 0;
} else {
opacity_a = DotVec2(vcd, vca) / Vec2LenSq(vcd);
}
opacity_a = ClampF32(opacity_a, 0, 1);
opacity_b = ClampF32(1.f - (DotVec2(vdc, vdb) / Vec2LenSq(vdc)), 0, 1);
}
f32 thickness = 0.01f;
u32 color_start = Rgba32F(1, 0.5, 0, opacity_a);
u32 color_end = Rgba32F(1, 0.8, 0.4, opacity_b);
if (opacity_b > 0.99f) {
draw_circle(G.render_sig, b, thickness / 2, color_end, 20);
}
draw_gradient_line(G.render_sig, a, b, thickness, color_start, color_end);
}
#endif
/* Draw sprite */
if (!sprite_tag_is_nil(sprite)) {
S_Sheet *sheet = sprite_sheet_from_tag_async(sprite_frame_scope, sprite);
S_Texture *texture = sprite_texture_from_tag_async(sprite_frame_scope, sprite);
/* TODO: Fade in placeholder if texture isn't loaded */
if (sheet->loaded && texture->loaded) {
b32 is_light = sim_ent_has_prop(ent, SEPROP_LIGHT_TEST);
Vec3 emittance = ent->sprite_emittance;
u32 tint = ent->sprite_tint;
S_SheetFrame frame = sprite_sheet_get_frame(sheet, ent->animation_frame);
D_MaterialParams params = DRAW_MATERIAL_PARAMS(.xf = sprite_xform, .texture = texture->gp_texture, .tint = tint, .clip = frame.clip, .is_light = is_light, .light_emittance = emittance);
draw_material(G.render_sig, params);
}
}
/* Draw tiles */
/* TODO: Something better */
if (sim_ent_has_prop(ent, SEPROP_TILE_CHUNK)) {
Vec2I32 chunk_index = ent->tile_chunk_index;
S_Tag tile_sprite = sprite_tag_from_path(LIT("sprite/tile.ase"));
S_Texture *tile_texture = sprite_texture_from_tag_async(sprite_frame_scope, tile_sprite);
if (tile_texture->loaded) {
f32 tile_size = 1.f / SIM_TILES_PER_UNIT_SQRT;
for (i32 tile_y = 0; tile_y < SIM_TILES_PER_CHUNK_SQRT; ++tile_y) {
for (i32 tile_x = 0; tile_x < SIM_TILES_PER_CHUNK_SQRT; ++tile_x) {
Vec2I32 local_tile_index = VEC2I32(tile_x, tile_y);
TileKind tile = ent->tile_chunk_tiles[local_tile_index.x + (local_tile_index.y * SIM_TILES_PER_CHUNK_SQRT)];
//if (tile > -1) {
if (tile == SIM_TILE_KIND_WALL) {
Vec2I32 world_tile_index = sim_world_tile_index_from_local_tile_index(chunk_index, local_tile_index);
Vec2 pos = sim_pos_from_world_tile_index(world_tile_index);
Xform tile_xf = XformFromRect(RectFromVec2(pos, VEC2(tile_size, tile_size)));
D_MaterialParams params = DRAW_MATERIAL_PARAMS(.xf = tile_xf, .texture = tile_texture->gp_texture, .is_light = 1, .light_emittance = VEC3(0, 0, 0));
draw_material(G.render_sig, params);
}
}
}
}
}
/* Debug draw entity info */
if (G.debug_draw && !skip_debug_draw) {
TempArena temp = BeginTempArena(scratch.arena);
if (sim_ent_has_prop(ent, SEPROP_KINEMATIC) || sim_ent_has_prop(ent, SEPROP_DYNAMIC)) {
debug_draw_movement(ent);
}
/* Draw xform */
if (!skip_debug_draw_transform) {
u32 color_x = Rgba32F(1, 0, 0, 0.5);
u32 color_y = Rgba32F(0, 1, 0, 0.5);
debug_draw_xform(xf, color_x, color_y);
}
/* Draw AABB */
if (ent->local_collider.count > 0) {
Aabb aabb = collider_aabb_from_collider(&ent->local_collider, xf);
f32 thickness = 1;
u32 color = Rgba32F(1, 0, 1, 0.5);
Quad quad = QuadFromAabb(aabb);
quad = MulXformQuad(G.world_to_ui_xf, quad);
draw_quad_line(G.render_sig, quad, thickness, color);
}
/* Draw focus arrow */
if (ent == local_control || sim_ent_id_eq(ent->id, G.debug_following)) {
S_Sheet *sheet = sprite_sheet_from_tag_async(sprite_frame_scope, ent->sprite);
S_SheetSlice slice = sprite_sheet_get_slice(sheet, LIT("attach.wep"), ent->animation_frame);
Vec2 start = MulXformV2(sprite_xform, slice.center);
start = MulXformV2(G.world_to_ui_xf, start);
Vec2 end = AddVec2(xf.og, ent->control.focus);
end = MulXformV2(G.world_to_ui_xf, end);
draw_arrow_line(G.render_sig, start, end, 3, 10, Rgba32F(1, 1, 1, 0.5));
}
#if 0
/* Draw slices */
if (!sprite_tag_is_nil(ent->sprite)) {
S_Sheet *sheet = sprite_sheet_from_tag_async(sprite_frame_scope, sprite);
u32 quad_color = Rgba32F(1, 0, 0.5, 1);
u32 point_color = Rgba32F(1, 0, 0, 1);
u32 ray_color = Rgba32F(1, 0, 0.5, 1);
for (u64 i = 0; i < sheet->slice_groups_count; ++i) {
S_SheetSliceGroup *group = &sheet->slice_groups[i];
if (string_ends_with(group->name, LIT(".ray"))) continue;
for (u32 j = 0; j < group->per_frame_count; ++j) {
S_SheetSlice slice = group->frame_slices[(ent->animation_frame * group->per_frame_count) + j];
Vec2 center = MulXformV2(sprite_xform, slice.center);
center = MulXformV2(G.world_to_ui_xf, center);
if (!slice.has_ray) {
Quad quad = QuadFromRect(slice.rect);
quad = MulXformQuad(sprite_xform, quad);
quad = MulXformQuad(G.world_to_ui_xf, quad);
draw_quad_line(G.render_sig, quad, 2, quad_color);
}
draw_circle(G.render_sig, center, 3, point_color, 20);
if (slice.has_ray) {
Vec2 ray = MulXformBasisV2(sprite_xform, slice.dir);
ray = MulXformBasisV2(G.world_to_ui_xf, ray);
ray = Vec2WithLen(ray, 25);
draw_arrow_ray(G.render_sig, center, ray, 2, 10, ray_color);
}
}
}
}
#endif
/* Draw weld joint */
#if 0
if (sim_ent_has_prop(ent, SEPROP_WELD_JOINT)) {
Ent *e1 = sim_ent_from_id(G.ss_blended, ent->weld_joint_data.e1);
Xform e1_xf = sim_ent_get_xform(e1);
u32 color = ColorYellow;
f32 radius = 3;
Vec2 point = MulXformV2(e1_xf, ent->weld_joint_data.point_local_e1);
point = MulXformV2(G.world_to_ui_xf, point);
draw_circle(G.render_sig, point, radius, color, 10);
DEBUGBREAKABLE;
}
#endif
/* Draw mouse joint */
if (sim_ent_has_prop(ent, SEPROP_MOUSE_JOINT)) {
Ent *target = sim_ent_from_id(G.ss_blended, ent->mouse_joint_data.target);
Xform target_xf = sim_ent_get_xform(target);
u32 color = ColorWhite;
Vec2 point_start = MulXformV2(target_xf, ent->mouse_joint_data.point_local_start);
Vec2 point_end = G.world_cursor;
point_start = MulXformV2(G.world_to_ui_xf, point_start);
point_end = MulXformV2(G.world_to_ui_xf, point_end);
draw_arrow_line(G.render_sig, point_start, point_end, 3, 10, color);
draw_circle(G.render_sig, point_start, 4, color, 10);
}
/* Draw collider */
if (ent->local_collider.count > 0) {
CLD_Shape collider = ent->local_collider;
u32 color = Rgba32F(1, 1, 0, 0.5);
f32 thickness = 2;
{
/* Draw collider using support points */
u32 detail = 32;
Xform collider_draw_xf = MulXform(G.world_to_ui_xf, xf);
draw_collider_line(G.render_sig, collider, collider_draw_xf, thickness, color, detail);
}
{
/* Draw collider shape points */
for (u32 i = 0; i < collider.count; ++i) {
Vec2 p = MulXformV2(MulXform(G.world_to_ui_xf, xf), collider.points[i]);
draw_circle(G.render_sig, p, 3, ColorBlue, 10);
}
}
if (collider.count == 1 && collider.radius > 0) {
/* Draw upwards line for circle */
Vec2 start = xf.og;
Vec2 end = collider_get_support_point(&collider, xf, NegVec2(xf.by)).p;
start = MulXformV2(G.world_to_ui_xf, start);
end = MulXformV2(G.world_to_ui_xf, end);
draw_line(G.render_sig, start, end, thickness, color);
}
#if 0
/* Draw support point at focus dir */
{
Vec2 p = collider_support_point(&collider, xf, ent->control.focus);
p = MulXformV2(G.world_to_ui_xf, p);
draw_circle(G.render_sig, p, 3, ColorRed, 10);
}
#endif
}
/* Draw contact constraint */
if (sim_ent_has_prop(ent, SEPROP_CONTACT_CONSTRAINT)) {
ContactConstraint *data = &ent->contact_constraint_data;
Ent *e0 = sim_ent_from_id(G.ss_blended, data->e0);
Ent *e1 = sim_ent_from_id(G.ss_blended, data->e1);
(UNUSED)e0;
(UNUSED)e1;
#if DeveloperIsEnabled
/* Draw contact points */
{
f32 radius = 5;
for (u32 i = 0; i < data->num_points; ++i) {
u32 color = (data->skip_solve || data->wrong_dir) ? Alpha32F(ColorYellow, 0.3) : Rgba32F(0.8, 0.2, 0.2, 1);
ContactPoint point = data->points[i];
Vec2 dbg_pt = point.dbg_pt;
/* Draw point */
{
draw_circle(G.render_sig, MulXformV2(G.world_to_ui_xf, dbg_pt), radius, color, 10);
}
/* Draw normal */
{
f32 len = 0.1f;
f32 arrow_thickness = 2;
f32 arrow_height = 5;
Vec2 start = MulXformV2(G.world_to_ui_xf, dbg_pt);
Vec2 end = MulXformV2(G.world_to_ui_xf, AddVec2(dbg_pt, MulVec2(NormVec2(data->normal), len)));
draw_arrow_line(G.render_sig, start, end, arrow_thickness, arrow_height, color);
}
#if 0
/* Draw contact info */
{
F_Font *disp_font = font_load_async(LIT("font/fixedsys.ttf"), 12.0f);
if (disp_font) {
f32 offset_px = 10;
String fmt = LIT(
"e0 index: %F\n"
"e1 index: %F\n"
"id: 0x%F\n"
"impulse (n): %F\n"
"impulse (t): %F\n"
"separation: %F\n"
"normal: (%F, %F)\n"
"num contacts: %F"
);
String text = string_format(temp.arena, fmt,
FMT_UINT(e0->handle.idx),
FMT_UINT(e1->handle.idx),
FMT_HEX(point.id),
FMT_FLOAT(point.normal_impulse),
FMT_FLOAT(point.tangent_impulse),
FMT_FLOAT_P(point.starting_separation, 6),
FMT_FLOAT_P(data->normal.x, 6), FMT_FLOAT_P(data->normal.y, 6),
FMT_UINT(data->num_points));
draw_text(G.render_sig, disp_font, AddVec2(RoundVec2(MulXformV2(G.world_to_ui_xf, dbg_pt)), VEC2(0, offset_px)), text);
}
}
#endif
}
}
#endif
}
/* Draw collision debug */
#if COLLIDER_DEBUG
if (sim_ent_has_prop(ent, SEPROP_COLLISION_DEBUG)) {
CollisionDebugData *data = &ent->collision_debug_data;
CLD_CollisionResult collider_res = data->res;
Ent *e0 = sim_ent_from_id(G.ss_blended, data->e0);
Ent *e1 = sim_ent_from_id(G.ss_blended, data->e1);
CLD_Shape e0_collider = e0->local_collider;
CLD_Shape e1_collider = e1->local_collider;
(UNUSED)e0_collider;
(UNUSED)e1_collider;
/* Draw closest points */
#if 0
{
f32 radius = 4;
u32 color = Rgba32F(1, 1, 0, 0.5);
Vec2 a = MulXformV2(G.world_to_ui_xf, data->closest0);
Vec2 b = MulXformV2(G.world_to_ui_xf, data->closest1);
draw_circle(G.render_sig, a, radius, color, 10);
draw_circle(G.render_sig, b, radius, color, 10);
}
#endif
/* Draw clipping */
{
f32 thickness = 4;
f32 radius = 4;
u32 color_line = Rgba32F(1, 0, 1, 0.75);
u32 color_a = Rgba32F(1, 0, 0, 0.25);
u32 color_b = Rgba32F(0, 1, 0, 0.25);
u32 color_line_clipped = Rgba32F(1, 0, 1, 1);
u32 color_a_clipped = Rgba32F(1, 0, 0, 1);
u32 color_b_clipped = Rgba32F(0, 1, 0, 1);
{
Vec2 a = MulXformV2(G.world_to_ui_xf, collider_res.a0);
Vec2 b = MulXformV2(G.world_to_ui_xf, collider_res.b0);
draw_line(G.render_sig, a, b, thickness, color_line);
draw_circle(G.render_sig, a, radius, color_a, 10);
draw_circle(G.render_sig, b, radius, color_b, 10);
Vec2 a_clipped = MulXformV2(G.world_to_ui_xf, collider_res.a0_clipped);
Vec2 b_clipped = MulXformV2(G.world_to_ui_xf, collider_res.b0_clipped);
draw_line(G.render_sig, a_clipped, b_clipped, thickness, color_line_clipped);
draw_circle(G.render_sig, a_clipped, radius, color_a_clipped, 10);
draw_circle(G.render_sig, b_clipped, radius, color_b_clipped, 10);
}
{
Vec2 a = MulXformV2(G.world_to_ui_xf, collider_res.a1);
Vec2 b = MulXformV2(G.world_to_ui_xf, collider_res.b1);
draw_line(G.render_sig, a, b, thickness, color_line);
draw_circle(G.render_sig, a, radius, color_a, 10);
draw_circle(G.render_sig, b, radius, color_b, 10);
Vec2 a_clipped = MulXformV2(G.world_to_ui_xf, collider_res.a1_clipped);
Vec2 b_clipped = MulXformV2(G.world_to_ui_xf, collider_res.b1_clipped);
draw_line(G.render_sig, a_clipped, b_clipped, thickness, color_line_clipped);
draw_circle(G.render_sig, a_clipped, radius, color_a_clipped, 10);
draw_circle(G.render_sig, b_clipped, radius, color_b_clipped, 10);
}
}
#if COLLIDER_DEBUG_DETAILED_DRAW_MENKOWSKI
Xform e0_xf = data->xf0;
Xform e1_xf = data->xf1;
#if 0
/* Only draw points with large separation */
b32 should_draw = 0;
for (u32 i = 0; i < data->num_points; ++i) {
if (data->points[i].starting_separation < -0.1) {
should_draw = 1;
break;
}
}
#else
b32 should_draw = 1;
#endif
if (should_draw) {
#if 0
/* Test info */
{
F_Font *disp_font = font_load_async(LIT("font/fixedsys.ttf"), 12.0f);
if (disp_font) {
f32 offset_px = 10;
String fmt = LIT(
"e0 pos: (%F, %F)\n"
"e0 rot: %F\n"
"e1 pos: (%F, %F)\n"
"e1 rot: %F\n"
);
String text = string_format(temp.arena, fmt,
FMT_FLOAT_P(e0_xf.og.x, 24), FMT_FLOAT_P(e0_xf.og.y, 24),
FMT_FLOAT_P(RotationFromXform(e0_xf), 24),
FMT_FLOAT_P(e1_xf.og.x, 24), FMT_FLOAT_P(e1_xf.og.y, 24),
FMT_FLOAT_P(RotationFromXform(e1_xf), 24));
draw_text(G.render_sig, disp_font, AddVec2(RoundVec2(MulXformV2(G.world_to_ui_xf, VEC2(0, 0))), VEC2(0, offset_px)), text);
}
}
#endif
/* Draw menkowski */
{
u32 color = collider_res.solved ? Rgba32F(0, 0, 0.25, 1) : Rgba32F(0, 0.25, 0.25, 1);
f32 thickness = 2;
u32 detail = 512;
(UNUSED)thickness;
V2Array m = menkowski(temp.arena, &e0_collider, &e1_collider, e0_xf, e1_xf, detail);
for (u64 i = 0; i < m.count; ++i) m.points[i] = MulXformV2(G.world_to_ui_xf, m.points[i]);
draw_poly_line(G.render_sig, m, 1, thickness, color);
//draw_poly(G.render_sig, m, color);
}
/* Draw cloud */
{
u32 color = Rgba32F(1, 1, 1, 1);
f32 radius = 2;
V2Array m = cloud(temp.arena, &e0_collider, &e1_collider, e0_xf, e1_xf);
for (u64 i = 0; i < m.count; ++i) {
Vec2 p = MulXformV2(G.world_to_ui_xf, m.points[i]);
draw_circle(G.render_sig, p, radius, color, 10);
}
}
/* Draw prototype */
{
f32 thickness = 2;
u32 color = Rgba32F(1, 1, 1, 0.25);
V2Array m = {
.points = collider_res.prototype.points,
.count = collider_res.prototype.len
};
for (u64 i = 0; i < m.count; ++i) m.points[i] = MulXformV2(G.world_to_ui_xf, m.points[i]);
draw_poly_line(G.render_sig, m, 1, thickness, color);
for (u64 i = 0; i < m.count; ++i) draw_circle(G.render_sig, m.points[i], 10, color, 10);
}
/* Draw simplex */
{
f32 thickness = 2;
u32 line_color = ColorYellow;
u32 color_first = Rgba32F(1, 0, 0, 0.75);
u32 color_second = Rgba32F(0, 1, 0, 0.75);
u32 color_third = Rgba32F(0, 0, 1, 0.75);
struct collider_menkowski_simplex simplex = collider_res.simplex;
Vec2 simplex_points[] = { simplex.a.p, simplex.b.p, simplex.c.p };
for (u64 i = 0; i < countof(simplex_points); ++i) simplex_points[i] = MulXformV2(G.world_to_ui_xf, simplex_points[i]);
V2Array simplex_array = { .count = simplex.len, .points = simplex_points };
if (simplex.len >= 1) {
u32 color = simplex.len == 1 ? color_first : (simplex.len == 2 ? color_second : color_third);
draw_circle(G.render_sig, simplex_array.points[0], thickness * 3, color, 10);
}
if (simplex.len >= 2) {
u32 color = simplex.len == 2 ? color_first : color_second;
draw_circle(G.render_sig, simplex_array.points[1], thickness * 3, color, 10);
}
if (simplex.len >= 3) {
u32 color = color_first;
draw_circle(G.render_sig, simplex_array.points[2], thickness * 3, color, 10);
}
if (simplex.len >= 2) {
draw_poly_line(G.render_sig, simplex_array, simplex.len > 2, thickness, line_color);
}
}
/* Draw normal */
{
u32 color = ColorWhite;
f32 len = 0.1f;
f32 arrow_thickness = 4;
f32 arrowhead_height = 10;
Vec2 start = MulXformV2(G.world_to_ui_xf, VEC2(0, 0));
Vec2 end = MulXformV2(G.world_to_ui_xf, MulVec2(NormVec2(collider_res.normal), len));
draw_arrow_line(G.render_sig, start, end, arrow_thickness, arrowhead_height, color);
}
}
#endif
}
#endif
/* Draw hierarchy */
if (sim_ent_has_prop(parent, SEPROP_ACTIVE) && !parent->is_root) {
u32 color = Rgba32F(0.6, 0.6, 1, 0.75);
f32 thickness = 2;
f32 arrow_height = 15;
Vec2 start = MulXformV2(G.world_to_ui_xf, xf.og);
Vec2 end = MulXformV2(G.world_to_ui_xf, parent_xf.og);
draw_arrow_line(G.render_sig, start, end, thickness, arrow_height, color);
}
/* Draw camera rect */
if (sim_ent_has_prop(ent, SEPROP_CAMERA)) {
u32 color = ent == local_camera ? Rgba32F(1, 1, 1, 0.5) : Rgba32F(0, 0.75, 0, 0.5);
f32 thickness = 3;
Xform quad_xf = MulXform(xf, ent->camera_quad_xform);
Quad quad = MulXformQuad(quad_xf, CenteredUnitSquareQuad);
quad = MulXformQuad(G.world_to_ui_xf, quad);
draw_quad_line(G.render_sig, quad, thickness, color);
}
EndTempArena(temp);
}
}
}
/* Draw crosshair or show cursor */
if (!G.debug_camera) {
__profn("Draw crosshair");
Vec2 crosshair_pos = G.ui_cursor;
S_Tag crosshair = sprite_tag_from_path(LIT("sprite/crosshair.ase"));
S_Texture *t = sprite_texture_from_tag_async(sprite_frame_scope, crosshair);
Vec2 size = VEC2(t->width, t->height);
Xform xf = XformFromTrs(TRS(.t = crosshair_pos, .s = size));
draw_ui_rect(G.render_sig, DRAW_UI_RECT_PARAMS(.xf = xf, .texture = t->gp_texture));
}
/* FIXME: Enable this */
#if 0
{
__profn("Update window cursor");
if (G.debug_camera) {
P_DisableWindoweCursorClip(G.window);
P_ShowWindowCursor(G.window);
} else {
S_Texture *t = sprite_texture_from_tag_async(sprite_frame_scope, sprite_tag_from_path(LIT("sprite/crosshair.ase")));
Vec2 size = VEC2(t->width, t->height);
Rect cursor_clip = RectFromVec2(G.ui_screen_offset, G.ui_size);
cursor_clip.pos = AddVec2(cursor_clip.pos, MulVec2(size, 0.5f));
cursor_clip.pos = AddVec2(cursor_clip.pos, VEC2(1, 1));
cursor_clip.size = SubVec2(cursor_clip.size, size);
P_HideWindowCursor(G.window);
P_EnableWindoweCursorClip(G.window, cursor_clip);
}
}
#endif
/* ========================== *
* Create user sim cmd
* ========================== */
{
/* Queue player move cmd */
f32 move_speed = 1.0f;
//if (G.bind_states[USER_BIND_KIND_WALK].is_held) {
if (G.bind_states[USER_BIND_KIND_FULLSCREEN_MOD].is_held) {
//const f32 walk_ratio = 0.25f;
const f32 walk_ratio = 0.05f;
move_speed *= walk_ratio;
}
Vec2 input_move_dir = ZI;
{
for (enum user_bind_kind bind = 0; bind < (i32)countof(G.bind_states); ++bind) {
struct bind_state state = G.bind_states[bind];
if (!state.is_held && state.num_presses <= 0) {
continue;
}
switch (bind) {
/* Movement */
case USER_BIND_KIND_MOVE_UP:
{
input_move_dir.y -= 1;
} break;
case USER_BIND_KIND_MOVE_DOWN:
{
input_move_dir.y += 1;
} break;
case USER_BIND_KIND_MOVE_LEFT:
{
input_move_dir.x -= 1;
} break;
case USER_BIND_KIND_MOVE_RIGHT:
{
input_move_dir.x += 1;
} break;
default: break;
}
}
input_move_dir = InvertXformBasisMulV2(G.world_to_ui_xf, input_move_dir); /* Make move dir relative to world view */
input_move_dir = MulVec2(NormVec2(input_move_dir), move_speed);
}
if (!G.debug_camera) {
G.focus_send = SubVec2(G.world_cursor, sim_ent_get_xform(local_control).og);
}
Vec2 input_aim_dir = G.focus_send;
/* Queue player control cmd */
{
ControlData control = ZI;
control.move = input_move_dir;
control.focus = input_aim_dir;
control.dbg_cursor = G.world_cursor;
struct bind_state fire_state = G.bind_states[USER_BIND_KIND_FIRE];
struct bind_state fire_alt_state = G.bind_states[USER_BIND_KIND_FIRE_ALT];
struct bind_state drag_state = G.bind_states[USER_BIND_KIND_DEBUG_DRAG];
struct bind_state delete_state = G.bind_states[USER_BIND_KIND_DEBUG_DELETE];
struct bind_state clear_state = G.bind_states[USER_BIND_KIND_DEBUG_CLEAR];
struct bind_state spawn1_state = G.bind_states[USER_BIND_KIND_DEBUG_SPAWN1];
struct bind_state spawn2_state = G.bind_states[USER_BIND_KIND_DEBUG_SPAWN2];
struct bind_state spawn3_state = G.bind_states[USER_BIND_KIND_DEBUG_SPAWN3];
struct bind_state spawn4_state = G.bind_states[USER_BIND_KIND_DEBUG_SPAWN4];
struct bind_state walls_state = G.bind_states[USER_BIND_KIND_DEBUG_WALLS];
struct bind_state pause_state = G.bind_states[USER_BIND_KIND_DEBUG_PAUSE];
struct bind_state step_state = G.bind_states[USER_BIND_KIND_DEBUG_STEP];
struct bind_state tile_state = G.bind_states[USER_BIND_KIND_TILE_TEST];
struct bind_state explode_state = G.bind_states[USER_BIND_KIND_DEBUG_EXPLODE];
struct bind_state teleport_state = G.bind_states[USER_BIND_KIND_DEBUG_TELEPORT];
if (fire_state.num_presses || fire_state.is_held) {
control.flags |= SIM_CONTROL_FLAG_FIRE;
}
if (fire_alt_state.num_presses || fire_alt_state.is_held) {
control.flags |= SIM_CONTROL_FLAG_FIRE_ALT;
}
if (drag_state.num_presses || drag_state.is_held) {
control.flags |= SIM_CONTROL_FLAG_DRAG;
}
if (delete_state.num_presses || delete_state.is_held) {
control.flags |= SIM_CONTROL_FLAG_DELETE;
}
if (clear_state.num_presses_and_repeats) {
control.flags |= SIM_CONTROL_FLAG_CLEAR_ALL;
}
if (spawn1_state.num_presses_and_repeats) {
control.flags |= SIM_CONTROL_FLAG_SPAWN1_TEST;
}
if (spawn2_state.num_presses_and_repeats) {
control.flags |= SIM_CONTROL_FLAG_SPAWN2_TEST;
}
if (spawn3_state.num_presses_and_repeats) {
control.flags |= SIM_CONTROL_FLAG_SPAWN3_TEST;
}
if (spawn4_state.num_presses_and_repeats) {
control.flags |= SIM_CONTROL_FLAG_SPAWN4_TEST;
}
if (walls_state.num_presses_and_repeats) {
control.flags |= SIM_CONTROL_FLAG_WALLS_TEST;
}
if (tile_state.num_presses || tile_state.is_held) {
control.flags |= SIM_CONTROL_FLAG_TILE_TEST;
}
if (explode_state.num_presses_and_repeats) {
control.flags |= SIM_CONTROL_FLAG_EXPLODE_TEST;
}
if (teleport_state.num_presses_and_repeats || (G.debug_camera && teleport_state.is_held)) {
control.flags |= SIM_CONTROL_FLAG_TELEPORT_TEST;
}
if (pause_state.num_presses) {
Atomic32FetchXor(&G.user_paused, 1);
}
Atomic32FetchAdd(&G.user_paused_steps, step_state.num_presses_and_repeats);
/* Set user sim control */
{
P_Lock lock = P_LockE(&G.user_sim_cmd_mutex);
/* Reset flags */
if (G.user_sim_cmd_gen != G.last_user_sim_cmd_gen) {
G.user_sim_cmd_control.flags = 0;
G.last_user_sim_cmd_gen = G.user_sim_cmd_gen;
}
u32 old_flags = G.user_sim_cmd_control.flags;
G.user_sim_cmd_control = control;
G.user_sim_cmd_control.flags |= old_flags;
G.user_hovered_ent = hovered_ent->id;
P_Unlock(&lock);
}
}
#if RtcIsEnabled
/* Gjk steps */
{
if (G.bind_states[USER_BIND_KIND_RESET_DEBUG_STEPS].num_presses_and_repeats > 0) {
SetGstat(GSTAT_DEBUG_STEPS, 0);
}
i32 add_steps = 0;
add_steps += G.bind_states[USER_BIND_KIND_INCR_DEBUG_STEPS].num_presses_and_repeats;
add_steps -= G.bind_states[USER_BIND_KIND_DECR_DEBUG_STEPS].num_presses_and_repeats;
if (add_steps != 0) {
AddGstat(GSTAT_DEBUG_STEPS, add_steps);
}
}
#endif
}
{
/* Update network usage stats */
i64 stat_now_ns = P_TimeNs();
G.net_bytes_read.last_second_end = GetGstat(GSTAT_SOCK_BYTES_RECEIVED);
G.net_bytes_sent.last_second_end = GetGstat(GSTAT_SOCK_BYTES_SENT);
if (stat_now_ns - G.last_second_reset_ns > NsFromSeconds(1)) {
G.last_second_reset_ns = stat_now_ns;
G.net_bytes_read.last_second = G.net_bytes_read.last_second_end - G.net_bytes_read.last_second_start;
G.net_bytes_sent.last_second = G.net_bytes_sent.last_second_end - G.net_bytes_sent.last_second_start;
G.net_bytes_read.last_second_start = G.net_bytes_read.last_second_end;
G.net_bytes_sent.last_second_start = G.net_bytes_sent.last_second_end;
}
}
/* ========================== *
* Draw ent debug info
* ========================== */
if (G.debug_draw && hovered_ent->valid) {
Ent *ent = hovered_ent;
Vec2 pos = AddVec2(G.ui_cursor, VEC2(15, 15));
F_Font *font = font_load_async(LIT("font/fixedsys.ttf"), 12.0f);
if (font) {
TempArena temp = BeginTempArena(scratch.arena);
String dbg_text = ZI;
dbg_text.text = PushDry(temp.arena, u8);
dbg_text.len += get_ent_debug_text(temp.arena, ent).len;
draw_text(G.render_sig, DRAW_TEXT_PARAMS(.font = font, .pos = pos, .str = dbg_text));
EndTempArena(temp);
}
}
/* ========================== *
* Query vram
* ========================== */
G_MemoryInfo vram = gp_query_memory_info();
/* ========================== *
* Draw global debug info
* ========================== */
if (G.debug_draw) {
__profn("Draw debug info");
F_Font *font = font_load_async(LIT("font/fixedsys.ttf"), 12.0f);
if (font) {
TempArena temp = BeginTempArena(scratch.arena);
String text = ZI;
text.text = PushDry(temp.arena, u8);
#if BB_DebugIsEnabled
text.len += string_copy(temp.arena, LIT("(bitbuff debug enabled)")).len;
text.len += string_copy(temp.arena, LIT("\n")).len;
#endif
text.len += string_format(temp.arena, LIT("blended world entities: %F/%F"), FMT_UINT(G.ss_blended->num_ents_allocated), FMT_UINT(G.ss_blended->num_ents_reserved)).len;
text.len += string_copy(temp.arena, LIT("\n")).len;
text.len += string_format(temp.arena, LIT("blended world tick: %F"), FMT_UINT(G.ss_blended->tick)).len;
text.len += string_copy(temp.arena, LIT("\n")).len;
text.len += string_format(temp.arena, LIT("blended world time: %F"), FMT_FLOAT(SecondsFromNs(G.ss_blended->sim_time_ns))).len;
text.len += string_copy(temp.arena, LIT("\n")).len;
text.len += string_copy(temp.arena, LIT("\n")).len;
text.len += string_format(temp.arena, LIT("average local sim publish dt: %F"), FMT_FLOAT(SecondsFromNs(G.average_local_to_user_snapshot_publish_dt_ns))).len;
text.len += string_copy(temp.arena, LIT("\n")).len;
text.len += string_format(temp.arena, LIT("local sim last known tick: %F"), FMT_UINT(G.local_sim_last_known_tick)).len;
text.len += string_copy(temp.arena, LIT("\n")).len;
text.len += string_format(temp.arena, LIT("local sim last known time: %F"), FMT_FLOAT(SecondsFromNs(G.local_sim_last_known_time_ns))).len;
text.len += string_copy(temp.arena, LIT("\n")).len;
text.len += string_format(temp.arena, LIT("local sim predicted time: %F"), FMT_FLOAT(SecondsFromNs(G.local_sim_predicted_time_ns))).len;
text.len += string_copy(temp.arena, LIT("\n")).len;
text.len += string_format(temp.arena, LIT("render time target: %F"), FMT_FLOAT(SecondsFromNs(G.render_time_target_ns))).len;
text.len += string_copy(temp.arena, LIT("\n")).len;
text.len += string_format(temp.arena, LIT("render time: %F"), FMT_FLOAT(SecondsFromNs(G.render_time_ns))).len;
text.len += string_copy(temp.arena, LIT("\n")).len;
text.len += string_copy(temp.arena, LIT("\n")).len;
text.len += string_format(temp.arena, LIT("local player: [%F]"), FMT_UID(local_player->id.uid)).len;
text.len += string_copy(temp.arena, LIT("\n")).len;
text.len += string_copy(temp.arena, LIT("\n")).len;
Vec2 world_cursor = G.world_cursor;
text.len += string_format(temp.arena, LIT("cursor world: %F, %F"), FMT_FLOAT(world_cursor.x), FMT_FLOAT(world_cursor.y)).len;
text.len += string_copy(temp.arena, LIT("\n")).len;
Vec2I32 world_tile_cursor = sim_world_tile_index_from_pos(world_cursor);
text.len += string_format(temp.arena, LIT("cursor world tile: %F, %F"), FMT_SINT(world_tile_cursor.x), FMT_SINT(world_tile_cursor.y)).len;
text.len += string_copy(temp.arena, LIT("\n")).len;
Vec2I32 local_tile_cursor = sim_local_tile_index_from_world_tile_index(world_tile_cursor);
text.len += string_format(temp.arena, LIT("cursor local tile: %F, %F"), FMT_SINT(local_tile_cursor.x), FMT_SINT(local_tile_cursor.y)).len;
text.len += string_copy(temp.arena, LIT("\n")).len;
Vec2I32 tile_chunk_cursor = sim_tile_chunk_index_from_world_tile_index(world_tile_cursor);
text.len += string_format(temp.arena, LIT("cursor tile chunk: %F, %F"), FMT_SINT(tile_chunk_cursor.x), FMT_SINT(tile_chunk_cursor.y)).len;
text.len += string_copy(temp.arena, LIT("\n")).len;
text.len += string_copy(temp.arena, LIT("\n")).len;
text.len += string_format(temp.arena, LIT("Network read: %F mbit/s"), FMT_FLOAT((f64)G.net_bytes_read.last_second * 8 / 1000 / 1000)).len;
text.len += string_copy(temp.arena, LIT("\n")).len;
text.len += string_format(temp.arena, LIT("Network write: %F mbit/s"), FMT_FLOAT((f64)G.net_bytes_sent.last_second * 8 / 1000 / 1000)).len;
text.len += string_copy(temp.arena, LIT("\n")).len;
text.len += string_format(temp.arena, LIT("Ping (real): %F ms"), FMT_FLOAT(SecondsFromNs(local_player->player_last_rtt_ns) * 1000)).len;
text.len += string_copy(temp.arena, LIT("\n")).len;
text.len += string_format(temp.arena, LIT("Ping (average): %F ms"), FMT_FLOAT(local_player->player_average_rtt_seconds * 1000)).len;
text.len += string_copy(temp.arena, LIT("\n")).len;
text.len += string_copy(temp.arena, LIT("\n")).len;
text.len += string_format(temp.arena, LIT("Memory committed: %F MiB"), FMT_FLOAT((f64)GetGstat(GSTAT_MEMORY_COMMITTED) / 1024 / 1024)).len;
text.len += string_copy(temp.arena, LIT("\n")).len;
text.len += string_format(temp.arena, LIT("Virtual memory reserved: %F TiB"), FMT_FLOAT((f64)GetGstat(GSTAT_MEMORY_RESERVED) / 1024 / 1024 / 1024 / 1024)).len;
text.len += string_copy(temp.arena, LIT("\n")).len;
text.len += string_format(temp.arena, LIT("Arenas allocated: %F"), FMT_UINT(GetGstat(GSTAT_NUM_ARENAS))).len;
text.len += string_copy(temp.arena, LIT("\n")).len;
text.len += string_copy(temp.arena, LIT("\n")).len;
text.len += string_format(temp.arena, LIT("Video memory (GPU): %F MiB"), FMT_FLOAT((f64)vram.local_used / 1024 / 1024)).len;
text.len += string_copy(temp.arena, LIT("\n")).len;
text.len += string_format(temp.arena, LIT("Video memory (shared): %F MiB"), FMT_FLOAT((f64)vram.non_local_used / 1024 / 1024)).len;
//text.len += string_copy(temp.arena, LIT("\n")).len;
//text.len += string_copy(temp.arena, LIT("\n")).len;
#if RtcIsEnabled
text.len += string_copy(temp.arena, LIT("\n")).len;
text.len += string_copy(temp.arena, LIT("\n")).len;
text.len += string_format(temp.arena, LIT("Debug steps: %F"), FMT_UINT(GetGstat(GSTAT_DEBUG_STEPS))).len;
//text.len += string_copy(temp.arena, LIT("\n")).len;
#endif
//draw_text(G.render_sig, font, pos, string_format(temp.arena, LIT("blended world entities: %F/%F"), FMT_UINT(G.ss_blended->num_ents_allocated), FMT_UINT(G.ss_blended->num_ents_reserved)));
//draw_text(G.render_sig, font, pos, text);
Vec2 pos = VEC2(10, G.ui_size.y);
D_TextOffsetY offset_y = DRAW_TEXT_OFFSET_Y_BOTTOM;
draw_text(G.render_sig, DRAW_TEXT_PARAMS(.font = font, .pos = pos, .str = text, .offset_y = offset_y, .color = ColorWhite));
EndTempArena(temp);
}
}
{
#if DeveloperIsEnabled
b32 console_minimized = !G.debug_console;
i32 console_level = console_minimized ? P_LogLevel_Success: P_LogLevel_Debug;
draw_debug_console(console_level, console_minimized);
#else
if (G.debug_draw) {
draw_debug_console(P_LogLevel_Info, 0);
}
#endif
}
/* ========================== *
* Render
* ========================== */
{
__profn("Render");
Vec2I32 world_resolution = RoundVec2ToVec2I32(G.render_size);
Vec2I32 user_resolution = RoundVec2ToVec2I32(G.ui_size);
Vec2I32 backbuffer_resolution = RoundVec2ToVec2I32(G.screen_size);
/* Draw world to user texture */
G_Resource *render_texture = 0;
{
G_RenderParams params = ZI;
params.ui_size = user_resolution;
params.render_size = world_resolution;
params.world_to_render_xf = G.world_to_render_xf;
params.render_to_ui_xf = G.render_to_ui_xf;
params.effects_disabled = effects_disabled;
render_texture = gp_run_render(G.render_sig, params);
}
/* Present */
gp_present(G.swapchain, backbuffer_resolution, render_texture, G.ui_to_screen_xf, VSYNC);
}
/* ========================== *
* End frame cache scopes
* ========================== */
sprite_scope_end(sprite_frame_scope);
EndScratch(scratch);
}
internal P_JobDef(user_update_job, _)
{
(UNUSED)_;
i64 time_ns = P_TimeNs();
while (!Atomic32Fetch(&G.shutdown)) {
P_Window *window = G.window;
{
__profn("User sleep");
{
__profn("Swapchain wait");
gp_swapchain_wait(G.swapchain);
}
{
__profn("Frame limiter wait");
P_SleepFrame(time_ns, 1000000000 / FPS_LIMIT);
time_ns = P_TimeNs();
}
}
user_update(window);
}
}
/* ========================== *
* Local sim thread
* ========================== */
internal void generate_user_input_cmds(Client *user_input_client, u64 tick)
{
Snapshot *prev_user_input_ss = sim_snapshot_from_tick(user_input_client, user_input_client->last_tick);
Snapshot *user_input_ss = sim_snapshot_alloc(user_input_client, prev_user_input_ss, tick);
Ent *user_input_root = sim_ent_from_id(user_input_ss, SIM_ENT_ROOT_ID);
/* Find / create local control cmd ent */
Ent *control_cmd = sim_ent_find_first_match_one(user_input_ss, SEPROP_CMD);
if (!control_cmd->valid) {
control_cmd = sim_ent_alloc_sync_src(user_input_root);
control_cmd->cmd_kind = SIM_CMD_KIND_CONTROL;
control_cmd->predictor = user_input_client->player_id;
sim_ent_enable_prop(control_cmd, SEPROP_CMD);
sim_ent_activate(control_cmd, user_input_ss->tick);
}
{
P_Lock lock = P_LockE(&G.user_sim_cmd_mutex);
/* Update control cmd */
{
control_cmd->cmd_control = G.user_sim_cmd_control;
control_cmd->cmd_control_hovered_ent = G.user_hovered_ent;
}
#if 0
/* Create chat cmd */
if (G.user_sim_cmd_chat.len > 0) {
Ent *chat_cmd = sim_ent_alloc_sync_src(user_input_root);
chat_cmd->cmd_kind = SIM_CMD_KIND_CHAT;
//chat_cmd->chat_msg = ZI
}
#endif
++G.user_sim_cmd_gen;
P_Unlock(&lock);
}
}
struct sim_ss_decode_node {
Client *client;
u64 tick;
u64 base_tick;
String tmp_encoded;
struct sim_ss_decode_node *next;
};
struct sim_decode_queue {
struct sim_ss_decode_node *first;
struct sim_ss_decode_node *last;
};
internal P_JobDef(local_sim_job, _)
{
(UNUSED)_;
#if 0
struct host_listen_address local_listen_addr = host_listen_address_from_local_name(LIT("LOCAL_SIM"));
struct host_listen_address net_listen_addr = host_listen_address_from_net_port(12345);
//N_Host *host = host_alloc();
/* TODO: Host system should allocate & copy string stored in local_listen_addr */
//host_listen(host, local_listen_addr);
//host_listen(host, net_listen_addr);
#endif
b32 is_master = 0;
N_Host *host;
if (G.connect_address_str.len > 0) {
host = host_alloc(0);
P_Address addr = P_AddressFromString(G.connect_address_str);
host_queue_connect_to_address(host, addr);
} else {
host = host_alloc(12345);
is_master = 1;
}
BB_Buff msg_writer_bb = AllocBitbuff(Gibi(64));
BB_Buff snapshot_writer_bb = AllocBitbuff(Gibi(64));
SimAccel accel = sim_accel_alloc();
ClientStore *store = sim_client_store_alloc();
Client *user_input_client = sim_client_alloc(store); /* Stores snapshots containing commands to be published to local client */
Client *local_client = sim_client_alloc(store); /* Stores snapshots produced locally */
Client *publish_client = sim_client_alloc(store); /* Stores versions of local snapshots that will be published to remote sims */
Client *master_client = sim_client_nil(); /* Stores snapshots received from master */
Client *master_blended_client = sim_client_nil(); /* Stores interpolated master snapshots */
b32 initialized_from_master = 0;
i64 master_blend_time_ns = 0;
i64 average_master_receive_dt_ns = 0;
i64 last_tick_from_master_received_at_ns = 0;
i64 last_publish_to_user_ns = 0;
i64 real_time_ns = 0;
i64 real_dt_ns = 0;
i64 step_dt_ns = NsFromSeconds(1) / SIM_TICKS_PER_SECOND;
f64 compute_timescale = 1.0;
while (!Atomic32Fetch(&G.shutdown)) {
TempArena scratch = BeginScratchNoConflict();
{
__profn("Sim sleep");
P_SleepFrame(real_time_ns, step_dt_ns * compute_timescale);
}
{
__profn("Sim update");
real_dt_ns = P_TimeNs() - real_time_ns;
real_time_ns += real_dt_ns;
N_EventList host_events = host_update_begin(scratch.arena, host);
/* Read net messages */
struct sim_decode_queue queue = ZI;
{
for (N_Event *event = host_events.first; event; event = event->next) {
N_ChannelId channel_id = event->channel_id;
Client *client = sim_client_from_channel_id(store, channel_id);
switch (event->kind) {
case HOST_EVENT_KIND_CHANNEL_OPENED:
{
if (!client->valid) {
if (is_master) {
/* Create remote client */
client = sim_client_alloc(store);
sim_client_set_channel_id(client, channel_id);
} else {
/* Create master client */
if (!master_client->valid) {
client = sim_client_alloc(store);
sim_client_set_channel_id(client, channel_id);
master_client = client;
master_blended_client = sim_client_alloc(store);
} else {
/* We already have a master client */
Assert(0);
}
}
}
} break;
case HOST_EVENT_KIND_MSG:
{
if (client->valid) {
BB_Buff msg_bb = BitbuffFromString(event->msg);
BB_Reader msg_br = BB_ReaderFromBuff(&msg_bb);
u64 ack = BB_ReadUV(&msg_br);
u64 double_ack = BB_ReadUV(&msg_br);
if (ack > client->ack) {
client->ack = ack;
}
if (double_ack > client->double_ack) {
client->double_ack = double_ack;
}
/* Read & queue incoming snapshots for decoding */
u64 tmp_encoded_len = BB_ReadUV(&msg_br);
while (tmp_encoded_len > 0) {
u8 *tmp_encoded_bytes = BB_ReadBytesRaw(&msg_br, tmp_encoded_len);
if (!tmp_encoded_bytes) break;
BB_Buff decoder_bb = BitbuffFromString(STRING(tmp_encoded_len, tmp_encoded_bytes));
BB_Reader decoder_br = BB_ReaderFromBuff(&decoder_bb);
u64 base_tick = BB_ReadUV(&decoder_br);
u64 tick = BB_ReadUV(&decoder_br);
String tmp_encoded = ZI;
tmp_encoded.len = BB_NumBytesRemaining(&decoder_br);
tmp_encoded.text = BB_ReadBytesRaw(&decoder_br, tmp_encoded.len);
if (!tmp_encoded.text) tmp_encoded.len = 0;
Snapshot *base_ss = sim_snapshot_from_tick(client, base_tick);
if (base_ss->tick == base_tick) {
if (is_master) {
/* Queue incoming slave client snapshot for decoding */
//b32 should_decode = tick == client->highest_received_tick + 1 || client->highest_received_tick == 0;
b32 should_decode = tick > client->highest_received_tick;
if (should_decode) {
struct sim_ss_decode_node *node = PushStruct(scratch.arena, struct sim_ss_decode_node);
node->client = client;
node->tick = tick;
node->base_tick = base_tick;
node->tmp_encoded = tmp_encoded;
if (queue.last) {
queue.last->next = node;
} else {
queue.first = node;
}
queue.last = node;
if (tick > client->highest_received_tick) {
client->highest_received_tick = tick;
}
}
} else {
/* Decode incoming master client snapshots for decoding (only the newest one) */
b32 should_decode = client == master_client && tick > client->highest_received_tick;
if (should_decode) {
struct sim_ss_decode_node *node = queue.first ? queue.first : PushStruct(scratch.arena, struct sim_ss_decode_node);
node->client = client;
node->tick = tick;
node->base_tick = base_tick;
node->tmp_encoded = tmp_encoded;
queue.first = node;
queue.last = node;
if (tick > client->highest_received_tick) {
client->highest_received_tick = tick;
if (average_master_receive_dt_ns == 0) {
average_master_receive_dt_ns = NsFromSeconds(1) / SIM_TICKS_PER_SECOND;
} else {
average_master_receive_dt_ns -= average_master_receive_dt_ns / 50;
average_master_receive_dt_ns += (real_time_ns - last_tick_from_master_received_at_ns) / 50;
}
last_tick_from_master_received_at_ns = real_time_ns;
}
}
}
} else {
/* We do not have the tick that the incoming delta is based from */
Assert(0);
}
tmp_encoded_len = BB_ReadUV(&msg_br);
}
}
} break;
default: break;
}
}
}
/* Decode incoming snapshots */
for (struct sim_ss_decode_node *n = queue.first; n; n = n->next) {
Client *client = n->client;
u64 base_tick = n->base_tick;
u64 tick = n->tick;
Snapshot *base_ss = sim_snapshot_from_tick(client, base_tick);
if (base_ss->tick == base_tick) {
BB_Buff bb = BitbuffFromString(n->tmp_encoded);
BB_Reader br = BB_ReaderFromBuff(&bb);
/* Alloc & decode snapshot */
Snapshot *ss = sim_snapshot_alloc(client, base_ss, tick);
sim_snapshot_decode(&br, ss);
/* Assume all incoming ents want to be sync srcs */
for (u64 i = 0; i < ss->num_ents_reserved; ++i) {
Ent *ent = &ss->ents[i];
if (ent->valid && sim_ent_has_prop(ent, SEPROP_SYNC_DST)) {
sim_ent_disable_prop(ent, SEPROP_SYNC_DST);
sim_ent_enable_prop(ent, SEPROP_SYNC_SRC);
}
}
} else {
/* We do not have the tick that the incoming delta is based from.
* This decode should never have been queued in the first place. */
Assert(0);
}
}
if (!is_master && !initialized_from_master) {
if (master_client->valid && master_client->last_tick > 0) {
initialized_from_master = 1;
} else {
goto skip_step;
}
}
b32 should_step = !Atomic32Fetch(&G.user_paused);
if (Atomic32Fetch(&G.user_paused_steps) > 0) {
should_step = 1;
Atomic32FetchAdd(&G.user_paused_steps, -1);
}
if (!should_step) {
goto skip_step;
}
/* Update networked clients */
u64 oldest_client_ack = 0;
for (u64 i = 0; i < store->num_clients_reserved; ++i) {
Client *client = &store->clients[i];
if (client->valid && client != local_client && client != publish_client && client != user_input_client && client != master_client) {
client->last_rtt_ns = host_get_channel_last_rtt_ns(host, client->channel_id);
/* Release unneeded received snapshots */
/* TDOO: Cap how many client snapshots we're willing to retain */
if (client->double_ack > 0) {
u64 keep_tick = MinU64(client->double_ack, local_client->last_tick);
if (keep_tick > 0) {
sim_snapshot_release_ticks_in_range(client, 0, keep_tick - 1);
}
}
if (client->ack < oldest_client_ack || oldest_client_ack == 0) {
oldest_client_ack = client->ack;
}
}
}
/* Release unneeded published snapshots */
{
u64 keep_tick = oldest_client_ack;
if (keep_tick == 0 && publish_client->last_tick > 0) {
keep_tick = publish_client->last_tick - 1;
}
if (keep_tick > 0) {
--keep_tick;
}
sim_snapshot_release_ticks_in_range(publish_client, 0, keep_tick);
}
/* Release old local snapshots */
{
u64 keep_range = 50;
if (local_client->last_tick > keep_range) {
u64 keep_tick = local_client->last_tick - keep_range;
sim_snapshot_release_ticks_in_range(local_client, 0, keep_tick);
}
}
/* Release unneeded user input snapshots */
sim_snapshot_release_ticks_in_range(user_input_client, 0, local_client->first_tick - 1);
if (is_master) {
/* Step master */
u64 prev_tick = local_client->last_tick;
u64 next_tick = prev_tick + 1;
SimStepCtx ctx = ZI;
ctx.is_master = is_master;
ctx.sim_dt_ns = step_dt_ns;
ctx.accel = &accel;
ctx.user_input_client = user_input_client;
ctx.master_client = master_client;
ctx.publish_client = publish_client;
Snapshot *prev_world = sim_snapshot_from_tick(local_client, prev_tick);
ctx.world = sim_snapshot_alloc(local_client, prev_world, next_tick);
generate_user_input_cmds(user_input_client, next_tick);
sim_step(&ctx);
} else if (master_client->valid) {
/* Step client */
/* TODO: Eventually determine master tick based on a delay to allow for jitter and also interpolation so we can lower snapshot publish frequency */
b32 master_ss_is_blended = 0;
Snapshot *master_ss = sim_snapshot_nil();
{
/* How along are we between master sim ticks (0 = start of tick, 1 = end of tick) */
f64 tick_progress = 0;
i64 next_tick_expected_ns = last_tick_from_master_received_at_ns + average_master_receive_dt_ns;
if (next_tick_expected_ns > last_tick_from_master_received_at_ns) {
tick_progress = (f64)(real_time_ns - last_tick_from_master_received_at_ns) / (f64)(next_tick_expected_ns - last_tick_from_master_received_at_ns);
}
/* Predict master sim time based on average snapshot publish dt. */
Snapshot *newest_snapshot = sim_snapshot_from_tick(master_client, master_client->last_tick);
i64 master_sim_predicted_time_ns = newest_snapshot->sim_time_ns + (newest_snapshot->sim_dt_ns * tick_progress);
/* Determine blend time */
i64 master_blend_time_target_ns = master_sim_predicted_time_ns - (SIM_CLIENT_INTERP_RATIO * average_master_receive_dt_ns);
if (average_master_receive_dt_ns > 0) {
master_blend_time_ns += real_dt_ns;
}
i64 blend_time_target_diff_ns = master_blend_time_target_ns - master_blend_time_ns;
if (blend_time_target_diff_ns > NsFromSeconds(0.100) || blend_time_target_diff_ns < NsFromSeconds(-0.100)) {
/* Snap blend time if it gets too far from target blend time */
master_blend_time_ns = master_blend_time_target_ns;
}
u64 master_blend_tick = master_blend_time_ns / newest_snapshot->sim_dt_ns;
/* Get snapshot nearest to master blend time */
/* TODO: Blend */
Snapshot *left_snapshot = sim_snapshot_nil();
Snapshot *right_snapshot = newest_snapshot;
{
Snapshot *ss = sim_snapshot_from_tick(master_client, master_client->first_tick);
while (ss->valid) {
u64 next_tick = ss->next_tick;
i64 ss_time_ns = ss->sim_time_ns;
if (ss_time_ns < master_blend_time_ns && ss_time_ns > left_snapshot->sim_time_ns) {
left_snapshot = ss;
}
if (ss_time_ns > master_blend_time_ns && ss_time_ns < right_snapshot->sim_time_ns) {
right_snapshot = ss;
}
ss = sim_snapshot_from_tick(master_client, next_tick);
}
}
/* Create world from blended master snapshots */
f64 blend = 0;
if (left_snapshot->valid && right_snapshot->valid && right_snapshot->tick > left_snapshot->tick) {
blend = (f64)(master_blend_tick - left_snapshot->tick) / (f64)(right_snapshot->tick - left_snapshot->tick);
f64 epsilon = 0.001;
if (blend < epsilon) {
master_ss_is_blended = 0;
master_ss = left_snapshot;
} else if (blend > 1 - epsilon) {
master_ss_is_blended = 0;
master_ss = right_snapshot;
} else {
master_ss_is_blended = 1;
master_ss = sim_snapshot_alloc_from_lerp(master_blended_client, left_snapshot, right_snapshot, blend);
/* Release unneeded blended master snapshots */
if (master_ss->tick > 0) {
sim_snapshot_release_ticks_in_range(master_blended_client, 0, master_ss->tick - 1);
sim_snapshot_release_ticks_in_range(master_blended_client, master_ss->tick + 1, U64Max);
}
}
} else {
master_ss_is_blended = 0;
master_ss = left_snapshot->valid ? left_snapshot : right_snapshot;
}
/* Release unneeded master snapshots */
u64 keep_master_tick = MinU64(left_snapshot->tick, master_client->double_ack);
if (keep_master_tick > 0) {
sim_snapshot_release_ticks_in_range(master_client, 0, keep_master_tick - 1);
}
#if 0
DEBUGBREAKABLE;
P_LogDebugF("*************************************************");
P_LogDebugF("local_client->last_tick: %F", FMT_UINT(local_client->last_tick));
P_LogDebugF("master_sim_predicted_time_ns: %F", FMT_SINT(master_sim_predicted_time_ns));
P_LogDebugF("tick_progress: %F", FMT_FLOAT(tick_progress));
P_LogDebugF("sim_publish_timescale: %F", FMT_FLOAT(sim_publish_timescale));
P_LogDebugF("last_tick_from_master_received_at_ns: %F", FMT_SINT(last_tick_from_master_received_at_ns));
P_LogDebugF("average_master_receive_dt_ns: %F", FMT_SINT(average_master_receive_dt_ns));
P_LogDebugF("next_tick_expected_ns: %F", FMT_SINT(next_tick_expected_ns));
P_LogDebugF("master_blend_time_target_ns: %F", FMT_SINT(master_blend_time_target_ns));
P_LogDebugF("blend_time_target_diff_ns: %F", FMT_SINT(blend_time_target_diff_ns));
P_LogDebugF("master_blend_time_ns: %F", FMT_SINT(master_blend_time_ns));
P_LogDebugF("left_snapshot->tick: %F", FMT_UINT(left_snapshot->tick));
P_LogDebugF("right_snapshot->tick: %F", FMT_UINT(right_snapshot->tick));
P_LogDebugF("master_ss->tick: %F", FMT_UINT(master_ss->tick));
#endif
}
if (master_ss->valid) {
Ent *master_player = sim_ent_find_first_match_one(master_ss, SEPROP_PLAYER_IS_MASTER);
/* Update ent id from master */
{
user_input_client->player_id = master_ss->local_player;
local_client->player_id = master_ss->local_player;
}
/* Check for misprediction */
u64 mispredicted_tick = 0;
if (!master_ss_is_blended) {
/* TODO: Actually check for misprediction rather than triggering mispredict any time a new master snapshot is received */
mispredicted_tick = master_ss->tick;
}
u64 step_base_tick = local_client->last_tick;
u64 step_end_tick = step_base_tick + 1;
if (mispredicted_tick > 0) {
step_base_tick = mispredicted_tick;
if (step_end_tick <= step_base_tick) {
step_end_tick = step_base_tick + 1;
}
}
/* We want to simulate the ahead of the server to predict client input.
* How many ticks ahead we want to simulate is a balance between added latency and the server not receiving our inputs on time.
* We can take the server's ack minus the server's tick to determine how many cmds of ours the server has buffered.
*
* If this buffer gets too low (because we are lagging behind or the connection is unstable), meaning the server is not getting our input on time:
* - Shorten local compute rate to increase the rate at which we predict ahead & produce cmds, until the server's ack indicates a buffer size within desired range.
*
* If this buffer gets too large (because the client predicts too far ahead), meaning unneeded latency is being introduced:
* - Dilate local compute rate to decrease the rate at which we predict ahead & produce cmds until the server's ack indicates a buffer size within desired range.
*/
{
i64 cmds_ahead_on_master = (i64)master_client->ack - (i64)master_client->last_tick;
if (cmds_ahead_on_master < -3 || cmds_ahead_on_master > 10) {
/* Cmds are too far from master time, snap step end tick */
i64 rtt_ns = master_client->last_rtt_ns;
f64 rtt_tick_ratio = (f64)(rtt_ns + (step_dt_ns - 1)) / (f64)step_dt_ns;
i64 num_predict_ticks = RoundF64ToI64(rtt_tick_ratio) + 5;
step_end_tick = master_client->last_tick + num_predict_ticks;
compute_timescale = 1.1;
} else if (cmds_ahead_on_master > 2) {
/* Slow down simulation to dial back how far ahead we are predicting and bring local sim time closer to master sim time */
compute_timescale = 1.1;
} else if (cmds_ahead_on_master < 1) {
/* Speed up simulation rate predict more ticks and give master more inputs to work with */
compute_timescale = 0.9;
} else {
/* Server's cmd buffer is in a healthy range */
compute_timescale = 1;
}
}
/* Sync master with local base tick */
Snapshot *base_ss = sim_snapshot_from_tick(local_client, step_base_tick);
if (mispredicted_tick) {
if (base_ss->valid) {
sim_snapshot_sync_ents(base_ss, master_ss, master_player->id, 0);
} else {
base_ss = sim_snapshot_alloc(local_client, master_ss, step_base_tick);
}
}
/* Release any existing ticks that are about to be simulated */
sim_snapshot_release_ticks_in_range(local_client, step_base_tick + 1, U64Max);
/* Step */
generate_user_input_cmds(user_input_client, step_end_tick);
{
SimStepCtx ctx = ZI;
ctx.is_master = is_master;
ctx.sim_dt_ns = step_dt_ns;
ctx.accel = &accel;
ctx.user_input_client = user_input_client;
ctx.master_client = master_client;
ctx.publish_client = publish_client;
u64 step_tick = step_base_tick + 1;
Snapshot *prev_ss = base_ss;
while (step_tick <= step_end_tick) {
ctx.world = sim_snapshot_alloc(local_client, prev_ss, step_tick);
if (!mispredicted_tick && step_tick == step_end_tick) {
sim_snapshot_sync_ents(ctx.world, master_ss, master_player->id, SIM_SYNC_FLAG_NOSYNC_PREDICTABLES);
}
sim_step(&ctx);
prev_ss = ctx.world;
++step_tick;
}
}
}
}
/* Publish snapshot to remote clients */
for (u64 i = 0; i < store->num_clients_reserved; ++i) {
Client *client = &store->clients[i];
if (client->valid && client != user_input_client && client != local_client && client != publish_client) {
BB_Writer msg_bw = BB_WriterFromBuff(&msg_writer_bb);
BB_WriteUV(&msg_bw, client->highest_received_tick); /* ack */
BB_WriteUV(&msg_bw, client->ack); /* double ack */
Snapshot *base_ss = sim_snapshot_from_tick(publish_client, client->ack);
Snapshot *publish_ss;
if (client == master_client) {
/* If sending to master, start sending all snapshots since last ack */
publish_ss = sim_snapshot_from_closest_tick_gte(publish_client, base_ss->tick + 1);
} else {
/* If sending to slave, only send latest snapshot */
publish_ss = sim_snapshot_from_tick(publish_client, publish_client->last_tick);
}
while (publish_ss->valid) {
BB_Writer snapshot_bw = BB_WriterFromBuff(&snapshot_writer_bb);
String tmp_snapshot_encoded = ZI;
{
BB_WriteUV(&snapshot_bw, base_ss->tick);
BB_WriteUV(&snapshot_bw, publish_ss->tick);
sim_snapshot_encode(&snapshot_bw, client, base_ss, publish_ss);
tmp_snapshot_encoded.len = BB_GetNumBytesWritten(&snapshot_bw);
tmp_snapshot_encoded.text = BB_GetWrittenRaw(&snapshot_bw);
}
BB_WriteUV(&msg_bw, tmp_snapshot_encoded.len);
BB_WriteBytes(&msg_bw, tmp_snapshot_encoded);
publish_ss = sim_snapshot_from_tick(publish_client, publish_ss->tick + 1);
}
BB_WriteUV(&msg_bw, 0);
String encoded = ZI;
encoded.len = BB_GetNumBytesWritten(&msg_bw);
encoded.text = BB_GetWrittenRaw(&msg_bw);
host_queue_write(host, client->channel_id, encoded, 0);
}
}
/* CopyStruct local snapshot to user client */
{
Snapshot *local_ss = sim_snapshot_from_tick(local_client, local_client->last_tick);
if (local_ss->valid) {
/* TODO: Double buffer */
P_Lock lock = P_LockE(&G.local_to_user_client_mutex);
sim_snapshot_alloc(G.local_to_user_client, local_ss, local_ss->tick);
i64 publish_ns = P_TimeNs();
if (last_publish_to_user_ns == 0) {
last_publish_to_user_ns = publish_ns - G.average_local_to_user_snapshot_publish_dt_ns;
}
G.local_to_user_client_publish_dt_ns = publish_ns - last_publish_to_user_ns;
G.local_to_user_client_publish_time_ns = publish_ns;
last_publish_to_user_ns = publish_ns;
sim_snapshot_release_ticks_in_range(G.local_to_user_client, 0, local_ss->tick - 1);
P_Unlock(&lock);
}
}
skip_step:
/* Send host messages */
host_update_end(host);
__profframe("Local sim");
EndScratch(scratch);
}
}
sim_client_store_release(store);
sim_accel_release(&accel);
ReleaseBitbuff(&snapshot_writer_bb);
ReleaseBitbuff(&msg_writer_bb);
host_release(host);
}
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