Small refactor and rename of struct field.

src/map.odin

@@ -13,10 +13,12 @@ Tile_Type :: enum {
 }
 
 Game_Map :: struct {
-	width: int,
-	height: int,
 	tile_size: int,
-	data: [400]int
+	width:	   int,
+	height:    int,
+	width_px:  f32,
+	height_px: f32,
+	data:      [400]int
 }
 
 Grid_Pos :: [2]int
@@ -47,12 +49,17 @@ map_init :: proc() -> Game_Map {
 		1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
 	}
 
-	return Game_Map{
+	game := Game_Map{
 		width = 20,
 		height = 20,
 		tile_size = TILE_SIZE,
 		data = map_data,
 	}
+
+	game.width_px = f32(game.width * game.tile_size)
+	game.height_px = f32(game.height * game.tile_size)
+
+	return game
 }
 
 // requires raw window-space