Tilemap and grid

src/tilemap.odin

@@ -1,34 +1,56 @@
 package main
 
-import rl "vendor:raylib"
+import "vendor:raylib"
 
-TILE_SIZE :: 16
-TILE_IMAGE_PATH :: "assets/tiles.png"
-
-tilemap_image: rl.Texture2D
-
-tilesX: i32
-tilesY: i32
-
-load_tilemap :: proc() {
-	tilemap_image = rl.LoadTexture(TILE_IMAGE_PATH)
-
-	tilesX = tilemap_image.width / TILE_SIZE
-	tilesY = tilemap_image.height / TILE_SIZE
+TilemapSpritesheet :: struct {
+	texture:     raylib.Texture2D,
+	tile_width:  i32,
+	tile_height: i32,
+	tiles_x:     i32,
+	tiles_y:     i32,
 }
 
-unload_tilemap :: proc() {
-	rl.UnloadTexture(tilemap_image)
-}
 
-draw_tile :: proc(tilemap_pos: rl.Vector2, draw_pos: rl.Vector2, color: rl.Color) {
-	source_rect := rl.Rectangle {
-		x      = tilemap_pos.x * TILE_SIZE,
-		y      = tilemap_pos.y * TILE_SIZE,
-		width  = TILE_SIZE,
-		height = TILE_SIZE,
+load_tilemap_sheet :: proc(path: cstring, tile_width, tile_height: i32) -> TilemapSpritesheet {
+	tex := raylib.LoadTexture(path)
+
+	return TilemapSpritesheet {
+		texture = tex,
+		tile_width = tile_width,
+		tile_height = tile_height,
+		tiles_x = tex.width / tile_width,
+		tiles_y = tex.height / tile_height,
+	}
+}
+
+create_tile_grid :: proc(width, height: i32) -> [][]Tile {
+	grid: [][]Tile = make([][]Tile, height)
+	for y := 0; y < int(height); y += 1 {
+		grid[y] = make([]Tile, width)
+		for x := 0; x < int(width); x += 1 {
+			grid[y][x] = ground_tile
+		}
+	}
+	return grid
+}
+
+update_tile_grid :: proc(grid: [][]Tile, delta: f32) {
+	for y := 0; y < len(grid); y += 1 {
+		row := grid[y]
+		for x := 0; x < len(row); x += 1 {
+			update_tile_anim(&row[x], delta)
+		}
+	}
+}
+
+draw_tile_grid :: proc(sheet: ^TilemapSpritesheet, grid: [][]Tile) {
+	for y := 0; y < len(grid); y += 1 {
+		row := grid[y]
+		for x := 0; x < len(row); x += 1 {
+			tile := &row[x]
+			pos := raylib.Vector2{f32(x * int(sheet.tile_width)), f32(y * int(sheet.tile_height))}
+			draw_tile(sheet, tile, pos, raylib.Color{255, 136, 0, 255})
+		}
 	}
-
-	rl.DrawTextureRec(tilemap_image, source_rect, draw_pos, color)
 }