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generate walls space separately during bake rather than every frame

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This commit is contained in:
jacob 2026-02-09 18:03:48 -06:00
parent ffa3378a54
commit de86e12ba0
2 changed files with 306 additions and 278 deletions
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60
src/pp/pp.c
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@ -1196,7 +1196,7 @@ P_Constraint *P_NextConstraint(P_Constraint *c)
////////////////////////////////////////////////////////////
//~ Space
P_Space P_SpaceFromFrame(Arena *arena, P_Frame *frame)
P_Space P_SpaceFromEnts(Arena *arena, P_Frame *frame)
{
P_Space space = Zi;
TempArena scratch = BeginScratch(arena);
@ -1241,9 +1241,24 @@ P_Space P_SpaceFromFrame(Arena *arena, P_Frame *frame)
}
}
//- Generate wall shapes from tiles
// TODO: Cache walls in separate space
EndScratch(scratch);
return space;
}
P_Space P_SpaceFromWalls(Arena *arena, P_Frame *frame)
{
P_Space space = Zi;
TempArena scratch = BeginScratch(arena);
P_World *world = frame->world;
space.dims = VEC2I32(P_WorldPitch, P_WorldPitch);
i64 cells_count = P_WorldPitch * P_WorldPitch;
space.cells = PushStructs(arena, P_SpaceCell, cells_count);
Rng2 space_aabb = RNG2(
VEC2(0, 0),
VEC2(P_WorldPitch, P_WorldPitch)
);
Enum(WallDir)
{
WallDir_None,
@ -1264,14 +1279,6 @@ P_Space P_SpaceFromFrame(Arena *arena, P_Frame *frame)
i64 walls_count = 0;
GenWall *first_wall = 0;
// FIXME: Iterate to pitch + 1
//- Generate horizontal walls
for (i32 tile_y = 0; tile_y < P_TilesPitch + 1; ++tile_y)
{
@ -1396,8 +1403,6 @@ P_Space P_SpaceFromFrame(Arena *arena, P_Frame *frame)
}
}
}
}
EndScratch(scratch);
return space;
@ -1407,7 +1412,7 @@ P_SpaceCell P_SpaceCellFromPos(P_Space *space, Vec2 pos)
{
P_SpaceCell result = Zi;
pos = AddVec2(pos, VEC2(P_WorldPitch / 2.0, P_WorldPitch / 2.0));
if (pos.x >= 0 && pos.x < P_WorldPitch && pos.y >= 0 && pos.y < P_WorldPitch)
if (pos.x >= 0 && pos.x < space->dims.x && pos.y >= 0 && pos.y < space->dims.y)
{
i64 cell_idx = FloorF32(pos.y) * P_WorldPitch + FloorF32(pos.x);
result = space->cells[cell_idx];
@ -1562,7 +1567,7 @@ P_World *P_AcquireWorld(void)
world->arena = arena;
}
world->frames_arena = AcquireArena(Gibi(64));
world->statics_arena = AcquireArena(Gibi(64));
world->bake_arena = AcquireArena(Gibi(64));
world->first_frame = &P_NilFrame;
world->last_frame = &P_NilFrame;
@ -2044,13 +2049,23 @@ void P_StepFrame(P_Frame *frame)
//////////////////////////////
//- Bake world
{
u64 desired_bake_hash = world->tiles_hash;
if (desired_bake_hash != world->baked_hash)
{
ResetArena(world->bake_arena);
world->walls_space = P_SpaceFromWalls(world->bake_arena, frame);
world->baked_hash = desired_bake_hash;
}
}
//////////////////////////////
//- Build pre-solve space
P_Space space = P_SpaceFromFrame(scratch.arena, frame);
//- Build pre-solve ents space
P_Space ents_space = P_SpaceFromEnts(scratch.arena, frame);
//////////////////////////////
@ -2077,7 +2092,13 @@ void P_StepFrame(P_Frame *frame)
{
for (i32 query_x = query_rect.p0.x; query_x < query_rect.p1.x; ++query_x)
{
P_SpaceCell cell = P_SpaceCellFromPos(&space, VEC2(query_x, query_y));
P_SpaceCell cells[] = {
P_SpaceCellFromPos(&ents_space, VEC2(query_x, query_y)),
P_SpaceCellFromPos(&world->walls_space, VEC2(query_x, query_y)),
};
for (i64 cell_idx = 0; cell_idx < countof(cells); ++cell_idx)
{
P_SpaceCell cell = cells[cell_idx];
for (P_SpaceEntry *space_entry = cell.first; space_entry; space_entry = space_entry->next)
{
Rng2 aabb1 = P_BoundingBoxFromShape(space_entry->shape);
@ -2246,6 +2267,7 @@ void P_StepFrame(P_Frame *frame)
}
}
}
}
//////////////////////////////
//- Prune constraints

10
src/pp/pp.h
View File

@ -267,6 +267,7 @@ Struct(P_SpaceCell)
Struct(P_Space)
{
Vec2I32 dims;
P_SpaceCell *cells;
};
@ -330,7 +331,6 @@ Struct(P_World)
{
Arena *arena;
Arena *frames_arena;
Arena *statics_arena;
u64 seed;
RandState rand;
@ -344,6 +344,11 @@ Struct(P_World)
i64 frame_bins_count;
P_FrameBin *frame_bins;
//- Baked data
Arena *bake_arena;
P_Space walls_space;
u64 baked_hash;
u64 tiles_hash;
u8 *tiles;
};
@ -603,7 +608,8 @@ P_Constraint *P_NextConstraint(P_Constraint *c);
////////////////////////////////////////////////////////////
//~ Space
P_Space P_SpaceFromFrame(Arena *arena, P_Frame *frame);
P_Space P_SpaceFromEnts(Arena *arena, P_Frame *frame);
P_Space P_SpaceFromWalls(Arena *arena, P_Frame *frame);
P_SpaceCell P_SpaceCellFromPos(P_Space *space, Vec2 pos);
////////////////////////////////////////////////////////////