CODEWITHSUNDEEP
swiftsprite-kit
Discoveringmypath
Discoveringmypath

Reputation: 1077

SpriteKit Issue with Double Jump only working some of the time

Code:

func jumpAction(_ JumpPos: CGPoint, _ clickPos: CGPoint) {
    if jumpCount < 2 {
        var disty = (clickPos.y - JumpPos.y)
        var distx = clickPos.x

        self.physicsBody?.velocity = CGVector(dx: 0, dy: 0)
        self.physicsBody?.applyImpulse(CGVector(dx: distx, dy: disty))

        if  onGround == false {
            jumpCount += 1
        }
    }
}//

func didBegin(_ other: SKSpriteNode, _ contact: SKPhysicsContact) {
    if contact.contactPoint.y < self.frame.minY + 10 {
        jumpCount = 1
        onGround = true
    }
    if other.physicsBody?.categoryBitMask == Mask.SpinPlat {
        jumpCount = 0
    }
}

func didEnd(_ contact: SKPhysicsContact) {

    onGround = false
}

I have 3 functions above. The JumpAction is called when I press on the Jump Button on the screen. The didBegin and didEnd functions are called when contact with the top of a platform occurs with the player.

My issue:

So if player is on platform and I jump, the jump action is called before the didEnd function. This is why I have the jumpCount set to 1 when the player contacts the platform. This works fine...

The real issue is when my player lands on the platform, and he bounces slightly off (due to restitution) and then the jump button is pressed.

When this occurs, the onGround flag is flipped to false before the jump action is called and my player can only single jump.

I'm trying to find a simple way to get around this issue without having to implement a bunch of code, haven't found a way yet.

So this is why I am here. I want to be able to double jump even with that slight little bounce I explained earlier.

Thank you in advance!!!

Additional Info: I use the onGround flag so that if the player is on the ground, he can slide along the ground if they press the jump button in the right location...

Upvotes: 1

Views: 118

Answers (1)

jglasse
jglasse

Reputation: 1206

Have you tried simply delaying setting the "on ground" flag by a fraction of a second? 

let waitAction = SKAction.wait(forDuration: 0.5)
scene.runAction(waitAction, completion: {
                  self.onGround = false

            })

Obviously you could experiment with the exact duration to make sure it gives the "bounce" just enough time to end.

Upvotes: 1

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