Better method comparing Position's.

trash.go

@@ -9,7 +9,7 @@ func (game *Game) drawTrash() {
 func (game *Game) onTrash(pos Position) bool {
 	var found bool
 	for _, t := range game.trash {
-		if t.x == pos.x && t.y == pos.y {
+		if t == pos {
 			found = true
 		}
 	}