Map Render

map.odin

@@ -0,0 +1,85 @@
+package main
+
+import "core:fmt"
+import rl "vendor:raylib"
+
+
+Atlas :: struct {
+	tex:       rl.Texture2D,
+	tile_size: rl.Vector2,
+	cols:      i32,
+	rows:      i32,
+	frames:    i32,
+}
+
+TILE_MULT :: 4
+
+Tile :: struct {
+	atlas: ^Atlas,
+	pos:   rl.Vector2,
+	frame: i32,
+}
+
+load_atlas :: proc() -> Atlas {
+	at: Atlas
+
+	at.tex = rl.LoadTexture("./assets/3rdparty/tileset/Tiles/Tileset.png")
+	at.tile_size = rl.Vector2{16, 16}
+	at.rows = at.tex.height / (i32(at.tile_size.y))
+	at.cols = at.tex.width / i32(at.tile_size.x)
+	at.frames = at.cols * at.rows
+	fmt.printf(
+		"Atlas rows: %v, Atlas cols: %v, Frames: %v\n",
+		at.rows,
+		at.cols,
+		at.frames,
+	)
+
+	return at
+}
+//
+// draw_atlas :: proc(at: ^Atlas) {
+// 	rl.DrawTexturePro(
+// 		at^.tex,
+// 		rl.Rectangle{0, 0, at.tile_size.x, at.tile_size.y},
+// 		rl.Rectangle{0, 0, 64, 64},
+// 		rl.Vector2{0, 0},
+// 		0,
+// 		rl.WHITE,
+// 	)
+// }
+
+
+draw_tile :: proc(tile: Tile) {
+	offset := get_offset(tile.atlas, tile.frame)
+	rl.DrawTexturePro(
+		tile.atlas^.tex,
+		rl.Rectangle {
+			offset.x,
+			offset.y,
+			tile.atlas.tile_size.x,
+			tile.atlas.tile_size.y,
+		},
+		rl.Rectangle {
+			tile.pos.x * TILE_MULT,
+			tile.pos.y * TILE_MULT,
+			tile.atlas.tile_size.x * TILE_MULT,
+			tile.atlas.tile_size.y * TILE_MULT,
+		},
+		rl.Vector2{0, 0},
+		// rl.Vector2{tile.pos.x, tile.pos.y},
+		0,
+		rl.WHITE,
+	)
+}
+
+get_offset :: proc(atlas: ^Atlas, f: i32) -> rl.Vector2 {
+
+	col := f % atlas.cols
+	row := f / atlas.cols
+
+	return rl.Vector2 {
+		f32(col) * atlas.tile_size.x,
+		f32(row) * atlas.tile_size.y,
+	}
+}