Add collider map

engine/breeze/world/map.c

@@ -61,13 +61,41 @@ static void handleTileObjectLayer(BzTileObjectLayer *layer, cute_tiled_layer_t *
 
 }
 
-static i32 findSlot(const char *name, const BzTileLayerDesc desc[BZ_MAX_MAP_LAYERS]) {
-    for (i32 i = 0; i < BZ_MAX_MAP_LAYERS; i++) {
-        if (!desc[i].name) break;
-        if (strcmp(name, desc[i].name) == 0) return i;
+static void createColliders(BzTileMap *map) {
+    map->collidersCount = map->width * map->height;
+    map->colliderMap = bzAlloc(map->collidersCount * sizeof(*map->colliderMap));
+    for (i32 i = 0; i < map->collidersCount; i++) {
+        map->colliderMap[i] = (BzTileCollider) {{BZ_TILE_SHAPE_NONE}};
     }
 
-    return -1;
+    // Top-most layer takes priority
+    for (i32 i = map->layerCount - 1; i >= 0; i--) {
+        BzTileLayer *layer = map->layers + i;
+        if (layer->tilesetIdx == -1) continue;
+        BzTileset *tileset = map->tilesets + layer->tilesetIdx;
+        for (i32 y = 0; y < map->height; y++) {
+            for (i32 x = 0; x < map->width; x++) {
+                i32 tile = bzTileLayerGetTile(layer, x, y);
+                BzTileShape tilesetShape = bzTilesetGetTileCollider(tileset, tile);
+                if (tilesetShape.type == BZ_TILE_SHAPE_NONE ||
+                    tilesetShape.type == BZ_TILE_SHAPE_POINT)
+                    continue;
+                tilesetShape.x += layer->offsetX;
+                tilesetShape.y += layer->offsetY;
+
+                i32 colliderIdx = y * map->width + x;
+                BzTileCollider *collider = map->colliderMap + colliderIdx;
+
+                for (i32 sIdx = 0; sIdx < BZ_MAP_COLLIDER_DEPTH; sIdx++) {
+                    BzTileShape *shape = collider->shapes + sIdx;
+                    if (shape->type == BZ_TILE_SHAPE_NONE) {
+                        *shape = tilesetShape;
+                        break;
+                    }
+                }
+            }
+        }
+    }
 }
 
 BzTileMap bzTileMapCreate(const BzTileMapDesc *desc) {
@@ -163,6 +191,8 @@ BzTileMap bzTileMapCreate(const BzTileMapDesc *desc) {
 
     cute_tiled_free_map(cuteMap);
 
+    createColliders(&map);
+
     map.isValid = true;
     return map;
 }
@@ -209,6 +239,45 @@ void bzTileMapDraw(BzTileMap *map) {
     }
 }
 
+void bzTileMapDrawColliders(BzTileMap *map) {
+    Color color = RED;
+    color.a = 150;
+    for (i32 y = 0; y < map->height; y++) {
+        for (i32 x = 0; x < map->width; x++) {
+            i32 idx = y * map->width + x;
+            BzTileCollider collider = map->colliderMap[idx];
+            for (i32 i = 0; i < BZ_MAP_COLLIDER_DEPTH; i++) {
+                BzTileShape shape = collider.shapes[i];
+                if (shape.type == BZ_TILE_SHAPE_NONE)
+                    break;
+
+                i32 posX = x * map->tileWidth + shape.x;
+                i32 posY = y * map->tileHeight + shape.y;
+                f32 sizeX = shape.sizeX;
+                f32 sizeY = shape.sizeY;
+
+                switch (shape.type) {
+                    case BZ_TILE_SHAPE_NONE:
+                        break;
+                    case BZ_TILE_SHAPE_POINT:
+                        DrawCircle(posX, posY, 1.0f, color);
+                        break;
+                    case BZ_TILE_SHAPE_RECT:
+                        DrawRectangle(posX, posY, sizeX, sizeY, color);
+                        break;
+                    case BZ_TILE_SHAPE_ELLIPSE:
+                        sizeX *= 0.5f;
+                        sizeY *= 0.5f;
+                        DrawEllipse(posX + sizeX, posY + sizeY, sizeX, sizeY, color);
+                        break;
+                }
+            }
+
+
+        }
+    }
+}
+
 bool bzTileMapCanPlace(BzTileMap *map, i32 tileX, i32 tileY, i32 sizeX, i32 sizeY) {
     for (i32 y = tileY; y < tileY + sizeY; y++) {
         for (i32 x = tileX; x < tileX + sizeX; x++) {
@@ -229,3 +298,8 @@ bool bzTileMapCanPlace(BzTileMap *map, i32 tileX, i32 tileY, i32 sizeX, i32 size
 
     return true;
 }
+BzTileCollider bzTileMapGetCollider(BzTileMap *map, i32 x, i32 y) {
+    i32 idx = y * map->width + x;
+    BZ_ASSERT(idx < 0 && idx < map->collidersCount);
+    return map->colliderMap[idx];
+}

engine/breeze/world/map.h

@@ -6,6 +6,7 @@
 
 #define BZ_MAX_MAP_LAYERS 8
 #define BZ_MAX_MAP_TILESETS 8
+#define BZ_MAP_COLLIDER_DEPTH 3
 
 
 typedef struct BzTileLayer {
@@ -58,6 +59,10 @@ typedef struct BzTileMapDesc {
     BzTileObjectsDesc objectLayers[BZ_MAX_MAP_LAYERS];
 } BzTileMapDesc;
 
+typedef struct BzTileCollider {
+    BzTileShape shapes[BZ_MAP_COLLIDER_DEPTH];
+} BzTileCollider;
+
 typedef struct BzTileMap {
     Color backgroundColor;
 
@@ -66,6 +71,9 @@ typedef struct BzTileMap {
     i32 tileWidth;
     i32 tileHeight;
 
+    BzTileCollider *colliderMap;
+    i32 collidersCount;
+
     BzTileLayer layers[BZ_MAX_MAP_LAYERS];
     i32 layerCount;
 
@@ -86,7 +94,9 @@ BzTileMap bzTileMapCreate(const BzTileMapDesc *desc);
 void bzTileMapDestroy(BzTileMap *tilemap);
 
 void bzTileMapDraw(BzTileMap *map);
+void bzTileMapDrawColliders(BzTileMap *map);
 bool bzTileMapCanPlace(BzTileMap *map, i32 tileX, i32 tileY, i32 sizeX, i32 sizeY);
+BzTileCollider bzTileMapGetCollider(BzTileMap *map, i32 x, i32 y);