我正在进行跳跃游戏，我试图使角色跳跃顺畅，但它看起来像是飞行而不是跳跃
（视频附在主题末尾）
touchesBegan func
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
isUserInteractionEnabled = false
//Check if the user is on PlayScene
if scene?.name == "PlayScene" {
//start timer on touch
TouchTimer = Timer.scheduledTimer(timeInterval: 0.1, target: self, selector: #selector(timerStart), userInfo: nil, repeats: true)
}
for touch: AnyObject in touches {
//If the Game is NOT Over!
if isgameOver != true {
//Before first touch
if (isFirstBlock == true) {
//Tap first time
isFirstBlock = false
//Call Run Action
self.ojiRunFunc(sprite: ojiGame, name: "OjiRun")
ojiGame.physicsBody?.affectedByGravity = true
spawn = SKAction.run({
() in
self.createBlocks()
})
let delay = SKAction.wait(forDuration: 1.0)
let spawnDelay = SKAction.sequence([spawn, delay])
let spawnDelayforever = SKAction.repeatForever(spawnDelay)
self.run(spawnDelayforever)
}
playSound(soundName: "Jump")
ojiGame.physicsBody?.velocity.dy = 0
jumpActionfunc()
//**********************************************************//
//The game is OVER!
} else {
TouchTimer.invalidate()
}
timerStart func
func timerStart() {
//Add time
timeTouch = timeTouch + 0.1
jumpActionfunc()
}
jumpActionFunc
func jumpActionfunc () {
if (timeTouch <= 0.1 && timeTouch <= 0.2) {
ojiGame.physicsBody?.applyImpulse(CGVector(dx: 0, dy: 30))
print("1")
}else if (timeTouch >= 0.3 && timeTouch <= 0.4) {
ojiGame.physicsBody?.applyImpulse(CGVector(dx: 0, dy: 10))
print("2")
}else if (timeTouch >= 0.5 && timeTouch <= 0.6) {
ojiGame.physicsBody?.applyImpulse(CGVector(dx: 0, dy: 15))
print("3")
}else if (timeTouch >= 0.7 && timeTouch <= 0.8) {
ojiGame.physicsBody?.applyImpulse(CGVector(dx: 0, dy: 20))
print("4")
}
}
touchesEnded func
override func touchesEnded(_ touches: Set<UITouch>, with event: UIEvent?) {
ojiGame.physicsBody?.applyImpulse(CGVector(dx: 0, dy: -12))
//Reset timer after touch ended
TouchTimer.invalidate()
timeTouch = 0.0
}