private void spawn(int x, int y, boolean LeftButton) { if (spawnCooldown < 300) { return; } if (LeftButton) { entities.addAll(PhysSimHelper.spawnRandom(x, y, 1)); } else { RigidBody b = PhysSimHelper.spawnDiamond(x, y, 1); b.setVelocity(Vector2D.LEFT.mult(50)); b.setId(++testId); testDebug = true; entities.add(b); } spawnCooldown = 0; }