551 lines
15 KiB
C
551 lines
15 KiB
C
#define SIM_ENT_NIL_ID ((EntityId) { UID(0, 0) })
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#define SIM_ENT_ROOT_ID ((EntityId) { UID(0xaaaaaaaaaaaaaaaa, 0xaaaaaaaaaaaaaaaa) })
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typedef i32 EntProp; enum {
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SEPROP_ACTIVE,
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SEPROP_RELEASE,
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SEPROP_SYNC_SRC, /* This entity is networked to other clients */
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SEPROP_SYNC_DST, /* This entity is not locally created, and will sync with incoming net src ents */
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SEPROP_PLAYER,
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SEPROP_PLAYER_IS_MASTER,
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SEPROP_CMD,
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SEPROP_TILE_CHUNK,
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SEPROP_WALL,
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/* Physics collision */
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SEPROP_SENSOR, /* This entity's collisions generate contacts */
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SEPROP_SOLID, /* This entity's collisions generate contacts to be solved by the physics system (overrides SEPROP_SENSOR) */
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SEPROP_TOI, /* This entity's collisions are processed using TOI (time of impact) for precise collisions */
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/* Physics movement */
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SEPROP_KINEMATIC, /* This entity reacts to velocity */
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SEPROP_DYNAMIC, /* This entity reacts to velocity and forces (overrides SEPROP_KINEMATIC) */
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SEPROP_CONTROLLED,
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SEPROP_COLLISION_DEBUG,
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SEPROP_CONTACT_CONSTRAINT,
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SEPROP_MOTOR_JOINT,
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SEPROP_MOUSE_JOINT,
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SEPROP_WELD_JOINT,
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SEPROP_CAMERA,
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SEPROP_CAMERA_ACTIVE,
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SEPROP_BULLET,
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SEPROP_WEAPON_SMG,
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SEPROP_WEAPON_LAUNCHER,
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SEPROP_WEAPON_CHUCKER,
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SEPROP_CHUCKER_ZONE,
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SEPROP_EXPLOSION,
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SEPROP_TRACER,
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SEPROP_QUAKE,
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SEPROP_ATTACHED,
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/* Test props */
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SEPROP_TEST,
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SEPROP_TEST_SOUND_EMITTER,
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SEPROP_LIGHT_TEST,
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SEPROP_COUNT
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};
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Struct(Entity) {
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Snapshot *ss;
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/* ====================================================================== */
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/* Metadata */
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b32 valid; /* Is this ent allocated in memory that can be written to (can always be read) */
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EntityId id;
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u64 props[(SEPROP_COUNT + 63) / 64];
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u64 continuity_gen;
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/* Is this the root ent */
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b32 is_root;
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/* Is ent a child of the root ent */
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b32 is_top;
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/* The id of the top level parent of the ent tree (if ent is top then this point to itself) */
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EntityId top;
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/* Tree */
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EntityId parent;
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EntityId next;
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EntityId prev;
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EntityId first;
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EntityId last;
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/* Lists keyed by index in snapshot ent array */
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u32 next_in_id_bin;
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u32 prev_in_id_bin;
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u32 next_free;
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/* ====================================================================== */
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/* Sync */
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/* SEPROP_SYNC_SRC */
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/* SEPROP_SYNC_DST */
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/* Id of the player that owns simulation for this entity */
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EntityId owner;
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/* Id of the player that should predict simulation of this this entity locally */
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EntityId predictor;
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/* ====================================================================== */
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/* Position */
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/* Use xform getters & setters to access. */
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Xform _local_xform; /* Transform in relation to parent ent (or the world if ent has no parent) */
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Xform _xform; /* Calculated from ent tree */
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b32 _is_xform_dirty;
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/* ====================================================================== */
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/* Activation */
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/* If 0, the ent will auto activate at start of next tick if not already active. */
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u64 activation_tick;
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/* ====================================================================== */
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/* Layer */
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i32 layer;
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i32 final_layer; /* Calculated each tick from ent tree */
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/* ====================================================================== */
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/* Cmd */
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/* SEPROP_CMD */
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CmdKind cmd_kind;
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EntityId cmd_player;
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/* FIXME: Lerp */
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/* Control cmd */
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ControlData cmd_control;
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EntityId cmd_control_hovered_ent;
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/* Chat cmd */
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//String cmd_chat_msg;
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/* ====================================================================== */
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/* Chat */
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/* SEPROP_CHAT */
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EntityId chat_player;
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//String chat_msg;
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/* ====================================================================== */
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/* Tile */
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/* SEPROP_TILE_CHUNK */
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/* FIXME: Move out of here */
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u8 tile_chunk_tiles[SIM_TILES_PER_CHUNK_SQRT * SIM_TILES_PER_CHUNK_SQRT];
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Vec2I32 tile_chunk_index;
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/* ====================================================================== */
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/* Client */
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/* SEPROP_PLAYER */
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/* FIXME: Lerp */
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ClientHandle player_client_handle; /* The client handle on the master sim's machine */
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ControlData player_control;
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Vec2 player_cursor_pos;
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EntityId player_hovered_ent;
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EntityId player_control_ent;
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EntityId player_camera_ent;
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EntityId player_dbg_drag_joint_ent;
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b32 player_dbg_drag_start;
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b32 player_dbg_drag_stop;
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/* Client round-trip-time to server */
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i64 player_last_rtt_ns;
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f64 player_average_rtt_seconds;
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/* ====================================================================== */
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/* Collider */
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Vec2 collision_dir; /* If set, then only collisions coming from this direction will generate contacts (used for walls to prevent ghost collisions) */
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CLD_Shape local_collider;
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#if COLLIDER_DEBUG
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CollisionDebugData collision_debug_data;
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#endif
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SpaceEntryHandle space_handle;
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/* ====================================================================== */
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/* Constraints / joints */
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/* SEPROP_CONSTRAINT_CONTACT */
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ContactConstraint contact_constraint_data;
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/* SEPROP_MOTOR_JOINT */
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MotorJoint motor_joint_data;
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/* SEPROP_MOUSE_JOINT */
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MouseJoint mouse_joint_data;
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/* SEPROP_WELD_JOINT */
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WeldJoint weld_joint_data;
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/* ====================================================================== */
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/* Control */
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/* SEPROP_CONTROLLED */
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EntityId controlling_player;
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f32 control_force; /* How much force is applied to achieve desired control movement */
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f32 control_force_max_speed; /* Maximum linear velocity achieved by force (m/s) */
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f32 control_torque; /* How much torque is applied when turning towards desired focus */
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ControlData control;
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EntityId move_joint;
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EntityId aim_joint;
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/* ====================================================================== */
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/* Physics */
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/* SEPROP_DYNAMIC */
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//f32 density; /* Density in kg/m^2 */
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f32 friction;
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f32 mass_unscaled; /* Mass of ent in kg before any transformations */
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f32 inertia_unscaled; /* Inertia of ent in kg*m^2 before any transformations */
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EntityId ground_friction_joint;
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f32 linear_ground_friction;
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f32 angular_ground_friction;
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/* Use sim_ent_set_linear_velocity & sim_ent_set_angular_velocity to set */
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Vec2 linear_velocity; /* m/s */
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f32 angular_velocity; /* rad/s */
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Vec2 force;
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f32 torque;
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f32 linear_damping;
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f32 angular_damping;
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/* ====================================================================== */
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/* Sprite */
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S_Tag sprite;
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String sprite_span_name;
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u32 sprite_tint;
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Vec3 sprite_emittance;
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String sprite_collider_slice; /* Collider will sync to bounds of this slice if set */
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Xform sprite_local_xform; /* Sprite transform in relation to ent */
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/* ====================================================================== */
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/* Animation */
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/* SEPROP_ANIMATING */
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i64 animation_last_frame_change_time_ns;
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u32 animation_frame;
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/* ====================================================================== */
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/* Attachment */
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/* SEPROP_ATTACHED */
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/* Slice name on the parent ent's sprite to attach to */
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String attach_slice;
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/* ====================================================================== */
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/* Equip */
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EntityId equipped;
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/* ====================================================================== */
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/* Chucker */
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/* SEPROP_WEAPON_CHUCKER */
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EntityId chucker_zone;
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EntityId chucker_joint;
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/* ====================================================================== */
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/* Chucker zone */
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/* SEPROP_CHUCKER_ZONE */
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EntityId chucker_zone_ent;
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u64 chucker_zone_ent_tick;
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/* ====================================================================== */
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/* Triggerable */
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i32 num_primary_triggers;
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i32 num_secondary_triggers;
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f32 primary_fire_delay;
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f32 secondary_fire_delay;
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i64 last_primary_fire_ns;
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i64 last_secondary_fire_ns;
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/* ====================================================================== */
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/* Trigger */
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/* How many times has this trigger been triggered this tick */
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i64 triggered_count;
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/* Other triggers to activate when this entity has been triggered */
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//EntityId trigger_out_left;
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//EntityId trigger_out_right;
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/* ====================================================================== */
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/* Bullet */
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EntityId bullet_src;
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EntityId bullet_tracer;
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Vec2 bullet_src_pos;
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Vec2 bullet_src_dir;
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f32 bullet_launch_velocity;
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f32 bullet_knockback;
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f32 bullet_explosion_strength;
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f32 bullet_explosion_radius;
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b32 bullet_has_hit;
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/* ====================================================================== */
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/* Explosion */
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f32 explosion_strength;
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f32 explosion_radius;
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/* ====================================================================== */
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/* Tracer */
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/* SEPROP_TRACER */
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Vec2 tracer_start;
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Vec2 tracer_start_velocity;
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f32 tracer_fade_duration; /* Time for tracer to fade from opacity of 1 to 0 */
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/* calculated each frame */
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Vec2 tracer_gradient_start;
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Vec2 tracer_gradient_end;
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/* ====================================================================== */
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/* Quake */
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/* SEPROP_QUAKE */
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f32 quake_intensity;
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f32 quake_frequency;
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f32 quake_fade; /* How much intensity to lose per second */
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/* ====================================================================== */
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/* Testing */
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/* SEPROP_TEST */
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b32 test_initialized;
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Xform test_start_local_xform;
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Xform test_start_sprite_xform;
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/* SEPROP_TEST_SOUND_EMITTER */
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String sound_name;
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MIX_TrackDesc sound_desc;
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MIX_Handle sound_handle;
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/* ====================================================================== */
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/* Camera */
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/* SEPROP_CAMERA */
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EntityId camera_follow;
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Xform camera_quad_xform;
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f32 camera_lerp; /* Rate at which camera xform approaches target xform */
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u32 camera_lerp_continuity_gen;
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Xform camera_xform_target; /* Calculated from camera_follow */
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u32 camera_applied_lerp_continuity_gen_plus_one; /* Calculated */
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f32 shake;
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};
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Struct(EntArray) {
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Entity *ents;
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u64 count;
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};
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Struct(EntPropArray) {
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EntProp *props;
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u64 count;
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};
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Struct(EntBin) {
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u32 first;
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u32 last;
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};
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/* ========================== *
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* Nil
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* ========================== */
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Inline Entity *sim_ent_nil(void)
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{
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extern Readonly Entity **_g_sim_ent_nil;
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return *_g_sim_ent_nil;
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}
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/* ========================== *
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* Id helpers
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* ========================== */
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Inline b32 sim_ent_id_eq(EntityId a, EntityId b)
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{
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return EqUid(a.uid, b.uid);
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}
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Inline b32 sim_ent_id_is_nil(EntityId id)
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{
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return EqUid(id.uid, SIM_ENT_NIL_ID.uid);
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}
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/* ========================== *
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* Property helpers
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* ========================== */
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Inline void sim_ent_enable_prop(Entity *ent, EntProp prop)
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{
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u64 index = prop / 64;
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u64 bit = prop % 64;
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ent->props[index] |= ((u64)1 << bit);
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}
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Inline void sim_ent_disable_prop(Entity *ent, EntProp prop)
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{
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u64 index = prop / 64;
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u64 bit = prop % 64;
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ent->props[index] &= ~((u64)1 << bit);
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}
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Inline b32 sim_ent_has_prop(Entity *ent, EntProp prop)
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{
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u64 index = prop / 64;
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u64 bit = prop % 64;
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return !!(ent->props[index] & ((u64)1 << bit));
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}
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Inline b32 sim_ent_is_valid_and_active(Entity *ent)
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{
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return ent->valid && sim_ent_has_prop(ent, SEPROP_ACTIVE);
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}
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Inline b32 sim_ent_should_predict(Entity *ent)
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{
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return sim_ent_id_eq(ent->predictor, ent->ss->local_player);
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}
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Inline b32 sim_ent_is_owner(Entity *ent)
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{
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return sim_ent_id_eq(ent->owner, ent->ss->local_player);
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}
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Inline b32 sim_ent_should_simulate(Entity *ent)
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{
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b32 result = 0;
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if (sim_ent_is_valid_and_active(ent)) {
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result = 1;
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if (sim_ent_has_prop(ent, SEPROP_SYNC_DST)) {
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EntityId local_player = ent->ss->local_player;
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result = sim_ent_id_eq(local_player, ent->owner) || sim_ent_id_eq(local_player, ent->predictor);
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}
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}
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return result;
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}
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/* ========================== *
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* Entity functions
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* ========================== */
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/* Alloc */
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Entity *sim_ent_alloc_raw(Snapshot *ss, Entity *parent, EntityId id);
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Entity *sim_ent_alloc_local(Entity *parent);
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Entity *sim_ent_alloc_local_with_id(Entity *parent, EntityId id);
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Entity *sim_ent_alloc_sync_src(Entity *parent);
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Entity *sim_ent_alloc_sync_src_with_id(Entity *parent, EntityId id);
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Entity *sim_ent_alloc_sync_dst(Entity *parent, EntityId ent_id, EntityId owner_id);
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void sim_ent_release_raw(Entity *ent);
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void sim_ent_release(Entity *ent);
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void sim_ent_release_all_with_prop(Snapshot *ss, EntProp prop);
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/* Activate */
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void sim_ent_activate(Entity *ent, u64 current_tick);
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/* Id */
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void sim_ent_set_id(Entity *ent, EntityId id);
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Entity *sim_ent_from_id(Snapshot *ss, EntityId id);
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EntityId sim_ent_random_id(void);
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EntityId sim_ent_contact_constraint_id_from_contacting_ids(EntityId player_id, EntityId id0, EntityId id1);
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EntityId sim_ent_collision_debug_id_from_ids(EntityId player_id, EntityId id0, EntityId id1);
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EntityId sim_ent_tile_chunk_id_from_tile_chunk_index(Vec2I32 chunk_start);
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/* Query */
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Entity *sim_ent_find_first_match_one(Snapshot *ss, EntProp prop);
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Entity *sim_ent_find_first_match_all(Snapshot *ss, EntPropArray props);
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/* Tree */
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void sim_ent_link_parent(Entity *parent, Entity *child);
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void sim_ent_unlink_from_parent(Entity *ent);
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/* Xform */
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Xform sim_ent_get_xform(Entity *ent);
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Xform sim_ent_get_local_xform(Entity *ent);
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void sim_ent_set_xform(Entity *ent, Xform xf);
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void sim_ent_set_local_xform(Entity *ent, Xform xf);
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/* Movement */
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void sim_ent_set_linear_velocity(Entity *ent, Vec2 velocity);
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void sim_ent_set_angular_velocity(Entity *ent, f32 velocity);
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void sim_ent_apply_linear_impulse(Entity *ent, Vec2 impulse, Vec2 world_point);
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void sim_ent_apply_linear_impulse_to_center(Entity *ent, Vec2 impulse);
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void sim_ent_apply_force_to_center(Entity *ent, Vec2 force);
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void sim_ent_apply_angular_impulse(Entity *ent, f32 impulse);
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void sim_ent_apply_torque(Entity *ent, f32 torque);
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/* Tile */
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Entity *sim_tile_chunk_from_chunk_index(Snapshot *ss, Vec2I32 chunk_index);
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Entity *sim_tile_chunk_from_world_tile_index(Snapshot *ss, Vec2I32 world_tile_index);
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TileKind sim_get_chunk_tile(Entity *chunk_ent, Vec2I32 local_tile_index);
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/* Lerp */
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void sim_ent_lerp(Entity *e, Entity *e0, Entity *e1, f64 blend);
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/* Sync */
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void sim_ent_sync_alloc_tree(Entity *local_parent, Entity *remote, EntityId remote_player);
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void sim_ent_sync(Entity *local, Entity *remote);
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/* Encode / decode */
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void sim_ent_encode(BB_Writer *bw, Entity *e0, Entity *e1);
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void sim_ent_decode(BB_Reader *br, Entity *e);
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