Swift Timer Check TouchesEnded - swift

Question

Sorry to be awkward but please can I have the full code on how to do this:
I would like a delay of 1 second after every bullet is shot in my game to prevent bullet spam. If possible without creating a separate function for the bullet spawning as I have done this in touchesEnded. So tap, shoot, wait. tap, shoot, wait. And in the wait, if screen is tapped, nothing happens. Thanks and sorry I am a beginner
guard let touch = touches.first else {
return
}
let touchLocation = touch.location(in: self)
//Set up initial location of bullet and properties
let bullet = SKSpriteNode(imageNamed: "bullet")
bullet.name = "Bullet"
bullet.position = player.position
bullet.setScale(0.75)
bullet.zPosition = 1
bullet.physicsBody = SKPhysicsBody(circleOfRadius: bullet.size.width/2)
bullet.physicsBody?.isDynamic = true
bullet.physicsBody?.categoryBitMask = PhysicsCategory.Projectile
bullet.physicsBody?.contactTestBitMask = PhysicsCategory.Monster
bullet.physicsBody?.collisionBitMask = PhysicsCategory.None
bullet.physicsBody?.usesPreciseCollisionDetection = true
//Determine offset of location to bullet
let offset = touchLocation - bullet.position
//Stops Bullet from shooting backwards
if (offset.y < 0) { return }
addChild(bullet)
//Get the direction of where to shoot
let direction = offset.normalized()
//Make it shoot far enough to be guaranteed off screen
let shootAmount = direction * 1000
//Add the shoot amount to the current position
let realDest = shootAmount + bullet.position
//Create the actions
if currentGameState == gameState.inGame {
let actionMove = SKAction.move(to: realDest, duration: 1.2)
let actionMoveDone = SKAction.removeFromParent()
bullet.run(SKAction.sequence([actionMove, actionMoveDone]))
}
}

Answer 1

Try this:
var fired = false
// Other code...
override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
guard let touch = touches.first else {
return
}
let touchLocation = touch.location(in: self)
if fired == false {
fired = true
//Set up initial location of bullet and properties
let bullet = SKSpriteNode(imageNamed: "bullet")
bullet.name = "Bullet"
bullet.position = player.position
bullet.setScale(0.75)
bullet.zPosition = 1
bullet.physicsBody = SKPhysicsBody(circleOfRadius: bullet.size.width/2)
bullet.physicsBody?.isDynamic = true
bullet.physicsBody?.categoryBitMask = PhysicsCategory.Projectile
bullet.physicsBody?.contactTestBitMask = PhysicsCategory.Monster
bullet.physicsBody?.collisionBitMask = PhysicsCategory.None
bullet.physicsBody?.usesPreciseCollisionDetection = true
//Determine offset of location to bullet
let offset = touchLocation - bullet.position
//Stops Bullet from shooting backwards
if (offset.y < 0) { return }
addChild(bullet)
//Get the direction of where to shoot
let direction = offset.normalized()
//Make it shoot far enough to be guaranteed off screen
let shootAmount = direction * 1000
//Add the shoot amount to the current position
let realDest = shootAmount + bullet.position
//Create the actions
if currentGameState == gameState.inGame {
let actionMove = SKAction.move(to: realDest, duration: 1.2)
let actionMoveDone = SKAction.removeFromParent()
bullet.run(SKAction.sequence([actionMove, actionMoveDone]))
}
run(SKAction.wait(forDuration: 1), completion: { fired = false })
}
}
This means that every time that a bullet is fired, a timer for 1 second occurs which prevents the bullet code from being run until the time is over. At this point, the Boolean switches back to false allowing the code to be run again.