jacob/power_play
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

draw collider fast path when radius=0

Browse Source
This commit is contained in:
jacob 2025-06-08 14:10:27 -05:00
parent 05668865a7
commit 7229daf49c
3 changed files with 31 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
src/draw.c
View File

@ -239,21 +239,39 @@ void draw_arrow_ray(struct gpu_handle cmd_list, struct v2 pos, struct v2 rel, f3
draw_arrow_line(cmd_list, pos, end, thickness, arrowhead_height, color);
}
void draw_collider_line(struct gpu_handle cmd_list, struct xform draw_xf, struct collider_shape shape, struct xform shape_xf, f32 thickness, u32 color, u32 detail)
void draw_collider_line(struct gpu_handle cmd_list, struct collider_shape shape, struct xform shape_xf, f32 thickness, u32 color, u32 detail)
{
/* FIXME: Graphics bug when lots of colliders are drawn */
DEBUGBREAKABLE;
struct arena_temp scratch = scratch_begin_no_conflict();
struct v2 *points = arena_push_array_no_zero(scratch.arena, struct v2, detail);
for (u32 i = 0; i < detail; ++i) {
f32 angle = ((f32)i / (f32)detail) * (2 * PI);
struct v2 dir = V2(math_cos(angle), math_sin(angle));
struct v2 p = collider_get_support_point(&shape, shape_xf, dir).p;
p = xform_mul_v2(draw_xf, p);
points[i] = p;
struct v2_array poly = ZI;
if (shape.radius == 0) {
poly.count = shape.count;
poly.points = arena_push_array_no_zero(scratch.arena, struct v2, shape.count);
for (u32 i = 0; i < shape.count; ++i) {
struct v2 p = xform_mul_v2(shape_xf, shape.points[i]);
poly.points[i] = p;
}
} else {
poly.count = detail;
poly.points = arena_push_array_no_zero(scratch.arena, struct v2, detail);
for (u32 i = 0; i < detail; ++i) {
f32 angle = ((f32)i / (f32)detail) * (2 * PI);
struct v2 dir = V2(math_cos(angle), math_sin(angle));
struct v2 p = collider_get_support_point(&shape, shape_xf, dir).p;
poly.points[i] = p;
}
}
struct v2_array poly = { .points = points, .count = detail };
DEBUGBREAKABLE;
#if 1
draw_poly_line(cmd_list, poly, true, thickness, color);
#else
draw_poly(cmd_list, poly, color);
(UNUSED)thickness;
#endif
scratch_end(scratch);
}

2
src/draw.h
View File

@ -69,7 +69,7 @@ void draw_arrow_line(struct gpu_handle cmd_list, struct v2 start, struct v2 end,
void draw_arrow_ray(struct gpu_handle cmd_list, struct v2 pos, struct v2 rel, f32 thickness, f32 arrowhead_height, u32 color);
void draw_collider_line(struct gpu_handle cmd_list, struct xform draw_xf, struct collider_shape shape, struct xform shape_xf, f32 thickness, u32 color, u32 detail);
void draw_collider_line(struct gpu_handle cmd_list, struct collider_shape shape, struct xform shape_xf, f32 thickness, u32 color, u32 detail);
/* ========================== *
* Grid

8
src/user.c
View File

@ -1226,7 +1226,7 @@ INTERNAL void user_update(void)
b32 skip_debug_draw_transform = sim_ent_has_prop(ent, SEPROP_CAMERA);
skip_debug_draw_transform = true;
struct xform sprite_xform = xf;
struct xform sprite_xform = xform_mul(xf, ent->sprite_local_xform);
/* Draw tracer */
if (sim_ent_has_prop(ent, SEPROP_TRACER)) {
@ -1269,9 +1269,6 @@ INTERNAL void user_update(void)
/* Draw sprite */
//if ((false)) {
if (!sprite_tag_is_nil(sprite)) {
/* Calculate sprite xform */
sprite_xform = xform_mul(xf, ent->sprite_local_xform);
/* Async load */
struct sprite_sheet *sheet = sprite_sheet_from_tag_async(sprite_frame_scope, sprite);
struct sprite_texture *texture = sprite_texture_from_tag_async(sprite_frame_scope, sprite);
@ -1422,7 +1419,8 @@ INTERNAL void user_update(void)
{
/* Draw collider using support points */
u32 detail = 32;
draw_collider_line(G.user_gpu_cmd_list, G.world_to_user_xf, collider, xf, thickness, color, detail);
struct xform collider_draw_xf = xform_mul(G.world_to_user_xf, xf);
draw_collider_line(G.user_gpu_cmd_list, collider, collider_draw_xf, thickness, color, detail);
}
{
/* Draw collider shape points */