Add multi monitor multiplayer

bullet.go

@@ -149,14 +149,16 @@ func (bullet *Bullet) tick(gameMap *GameMap,
 	}
 	hitPlayer := false
 	for _, player := range *players {
-		if player.rect1.HasIntersection(&bulletRect) ||
-			player.rect2.HasIntersection(&bulletRect) ||
-			player.rect3.HasIntersection(&bulletRect) ||
-			player.rect4.HasIntersection(&bulletRect) {
-			hitPlayer = true
-			player.health -= 20
+		if hitPlayer {
 			break
 		}
+		for _, coloredRect := range player.gameObject.getCurrentRects() {
+			if coloredRect.rect.HasIntersection(&bulletRect) {
+				hitPlayer = true
+				player.shields -= 10
+				break
+			}
+		}
 	}
 	if collisionResult != 0 || hitPlayer {
 		bullet.explode(gameMap, bulletParticleMap)