doylet/feely_pona
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Start working on A*

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This commit is contained in:
doyle 2023-09-16 19:47:59 +10:00
parent bc047675d8
commit d2bf171d98
3 changed files with 67 additions and 2 deletions
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2
External/tely vendored

@ -1 +1 @@
Subproject commit 1b331f9ab37baa31b345d5be8d71a8c4c7946f87
Subproject commit 39af5c5627404982ec9200b2155f0b5c8874bf8f

66
feely_pona.cpp
View File

@ -297,7 +297,71 @@ void FP_GameUpdate(TELY_Platform *platform, TELY_Game *game, TELY_Renderer *rend
if (TELY_Platform_InputScanCodeIsPressed(input, TELY_PlatformInputScanCode_F1)) {
// NOTE: Do A* algorithm
Dqn_V2 world_pos = TELY_Game_CalcEntityWorldPos(game, player->handle);
Dqn_V2I player_tile = platform->core.window_size / FP_TILE_SIZE;
Dqn_V2I player_tile = Dqn_V2I_InitNx2(world_pos.x / FP_TILE_SIZE, world_pos.y / FP_TILE_SIZE);
Dqn_V2I target_tile = Dqn_V2I_InitNx2(30, 10);
Dqn_FArray<Dqn_V2I, 128> frontier = {};
Dqn_FArray_Add(&frontier, player_tile);
Dqn_usize tile_count_x = DQN_CAST(Dqn_usize)(platform->core.window_size.w / FP_TILE_SIZE);
Dqn_usize tile_count_y = DQN_CAST(Dqn_usize)(platform->core.window_size.h / FP_TILE_SIZE);
Dqn_DSMap<Dqn_usize> cost_so_far = Dqn_DSMap_Init<Dqn_usize>(128);
Dqn_DSMap<Dqn_usize> came_from = Dqn_DSMap_Init<Dqn_usize>(128);
DQN_DEFER {
Dqn_DSMap_Deinit(&came_from);
Dqn_DSMap_Deinit(&cost_so_far);
};
// NOTE: Initialise the starting cost
{
uint64_t tile_as_u64 = (DQN_CAST(uint64_t)player_tile.y << 32) | (DQN_CAST(uint64_t)player_tile.x << 0);
Dqn_DSMapKey key = Dqn_DSMap_KeyU64(&cost_so_far, tile_as_u64);
Dqn_DSMap_Set<Dqn_usize>(&cost_so_far, key, 0 /*value*/, nullptr);
}
while (frontier.size) {
Dqn_V2I current = frontier.data[0];
if (current == target_tile)
break;
Dqn_FArray<Dqn_V2I, 4> neighbours = {};
Dqn_V2I left = Dqn_V2I_InitNx2(current.x - 1, current.y);
Dqn_V2I right = Dqn_V2I_InitNx2(current.x + 1, current.y);
Dqn_V2I top = Dqn_V2I_InitNx2(current.x, current.y - 1);
Dqn_V2I bottom = Dqn_V2I_InitNx2(current.x, current.y + 1);
if (left.x >= 0)
Dqn_FArray_Add(&neighbours, left);
if (right.x <= tile_count_x)
Dqn_FArray_Add(&neighbours, right);
if (top.y >= 0)
Dqn_FArray_Add(&neighbours, top);
if (bottom.y >= 0)
Dqn_FArray_Add(&neighbours, bottom);
uint64_t curr_tile_as_u64 = (DQN_CAST(uint64_t)current.y << 32) | (DQN_CAST(uint64_t)current.x << 0);
Dqn_DSMapKey curr_tile_key = Dqn_DSMap_KeyU64(&cost_so_far, curr_tile_as_u64);
#if 0
for (Dqn_V2I next : neighbours) {
Dqn_usize new_cost = curr_cost + 1;
Dqn_usize *prev_cost = Dqn_DSMap_Find(&cost_so_far, curr_tile_key);
if (!prev_curr_cost || new_cost < *prev_curr_cost) {
*prev_cost = new_cost;
Dqn_usize manhattan_dist = DQN_ABS(target_tile.x - current.x) + DQN_ABS(target_tile.y - current.y);
Dqn_usize estimated_finish_cost = new_cost + manhattan_dist;
// TODO(doyle): Find the insert location
uint64_t next_tile_as_u64 = (DQN_CAST(uint64_t)next.y << 32) | (DQN_CAST(uint64_t)next.x << 0);
Dqn_DSMapKey next_tile_key = Dqn_DSMap_KeyU64(&came_from, next_tile_as_u64);
Dqn_DSMap_Set(&came_from, next_tile_key, curr_tile_as_u64);
}
}
#endif
}
}
} else {
game->camera.world_pos += dir_vector * 5.f;

1
feely_pona_unity.h
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@ -32,6 +32,7 @@
#define DQN_ONLY_SLICE
#define DQN_ONLY_LIST
#define DQN_ONLY_VARRAY
#define DQN_ONLY_DSMAP
#define DQN_ONLY_FS
#define _CRT_SECURE_NO_WARNINGS
#define DQN_IMPLEMENTATION