NotAShelf
ceb657add8
Signed-off-by: NotAShelf <raf@notashelf.dev> Change-Id: I7b6991f7342362033ad72ab4700fdb9f6a6a6964
91 lines
3.4 KiB
C
91 lines
3.4 KiB
C
#ifndef TILESET_H
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#define TILESET_H
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#include "settings.h"
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#include <raylib.h>
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// Maximum number of tiles that can be registered in a single atlas
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#define MAX_TILE_ID 32
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// Tile IDs for map tiles (variants for visual variety)
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#define TILE_WALL_0 0
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#define TILE_WALL_1 1
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#define TILE_FLOOR_0 2
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#define TILE_FLOOR_1 3
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#define TILE_FLOOR_2 4
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#define TILE_FLOOR_3 5
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#define TILE_STAIRS_SPRITE 6
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// Sprite IDs for entities
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#define SPRITE_PLAYER 7
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#define SPRITE_PLAYER_WALK_0 8
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#define SPRITE_PLAYER_WALK_1 9
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#define SPRITE_PLAYER_ATTACK 10
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#define SPRITE_ENEMY_GOBLIN 11
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#define SPRITE_ENEMY_GOBLIN_WALK_0 12
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#define SPRITE_ENEMY_GOBLIN_WALK_1 13
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#define SPRITE_ENEMY_GOBLIN_ATTACK 14
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#define SPRITE_ENEMY_SKELETON 15
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#define SPRITE_ENEMY_SKELETON_WALK_0 16
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#define SPRITE_ENEMY_SKELETON_WALK_1 17
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#define SPRITE_ENEMY_SKELETON_ATTACK 18
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#define SPRITE_ENEMY_ORC 19
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#define SPRITE_ENEMY_ORC_WALK_0 20
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#define SPRITE_ENEMY_ORC_WALK_1 21
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#define SPRITE_ENEMY_ORC_ATTACK 22
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#define SPRITE_ITEM_POTION 23
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#define SPRITE_ITEM_WEAPON 24
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#define SPRITE_ITEM_ARMOR 25
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// Door tiles
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#define TILE_DOOR_CLOSED_SPRITE 26
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#define TILE_DOOR_OPEN_SPRITE 27
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// Effect/status sprites
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#define SPRITE_EFFECT_BURN 28
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#define SPRITE_EFFECT_POISON 29
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#define SPRITE_EFFECT_BLOCK 30
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#define SPRITE_SLASH_EFFECT 31
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// Total count of defined tiles
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#define NUM_TILE_IDS 32
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// Tileset encapsulates a GPU texture atlas with sub-rectangle regions per tile ID.
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// The atlas is built at startup by painting into a RenderTexture, then finalized
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// into a regular Texture2D for efficient drawing via DrawTexturePro.
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typedef struct {
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RenderTexture2D render_target; // RenderTexture for painting (valid before finalize)
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Texture2D atlas; // GPU texture (valid after finalize)
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int tile_w; // width of each tile in pixels
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int tile_h; // height of each tile in pixels
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Rectangle regions[MAX_TILE_ID]; // sub-rectangles within atlas for each tile ID
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int tile_count; // number of registered tiles
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int atlas_cols; // number of columns in the atlas grid
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int atlas_rows; // number of rows in the atlas grid
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int finalized; // 1 after tileset_finalize called, 0 otherwise
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} Tileset;
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// Initialize a tileset with the given tile dimensions.
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// Computes atlas grid size based on MAX_TILE_ID and allocates a RenderTexture.
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// Returns 0 on failure (e.g., RenderTexture allocation failed), non-zero on success.
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int tileset_init(Tileset *ts, int tile_w, int tile_h);
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// Register a tile ID with its atlas region.
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// The region is computed automatically based on tile_w/tile_h and the ID index.
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// Returns 0 if the ID is out of bounds or already registered, non-zero on success.
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int tileset_register(Tileset *ts, int id);
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// Finalize the tileset: converts the internal RenderTexture into a regular Texture2D
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// suitable for DrawTexturePro. After this call, painting functions must not be used.
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// Returns 0 on failure, non-zero on success.
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int tileset_finalize(Tileset *ts);
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// Get the atlas sub-rectangle for a given tile ID.
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// Returns a zeroed Rectangle if the ID is invalid or not registered.
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Rectangle tileset_get_region(const Tileset *ts, int id);
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// Destroy a tileset, unloading the atlas texture and zeroing the struct.
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// Safe to call on a zero-initialized or already-destroyed tileset.
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void tileset_destroy(Tileset *ts);
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#endif // TILESET_H
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