この unity チュートリアルに従って、動的な 2D 水を作成したいです。
http://gamedevelopment.tutsplus.com/tutorials/make-a-splash-with-2d-water-effects--gamedev-236
あとこれも
http://blog.prime31.com/water2d-part1/
これが私のコードです
class GameScene: SKScene, SKPhysicsContactDelegate {
var box: SKSpriteNode!
var nodes:[SKNode] = []
override func didMoveToView(view: SKView) {
/* Setup your scene here */
self.anchorPoint = CGPointMake(0.5, 0.5)
// Set physics body
let borderBody: SKPhysicsBody = SKPhysicsBody(edgeLoopFromRect: self.frame);
borderBody.friction = 0.0;
self.physicsBody = borderBody;
// Set contact delegate
self.physicsWorld.contactDelegate = self;
box = SKSpriteNode(color: UIColor.blackColor(), size: CGSize(width: 200, height: 20))
box.position = CGPointMake(0, 0)
box.physicsBody = SKPhysicsBody(rectangleOfSize: box.size)
box.physicsBody!.dynamic = false
self.addChild(box)
let one = SKSpriteNode(color: UIColor.greenColor(), size: CGSize(width: 20, height: 20))
one.position = CGPointMake(box.position.x - box.frame.size.width/2, box.position.y + box.frame.size.height * 2)
one.physicsBody = SKPhysicsBody(rectangleOfSize: one.size)
one.physicsBody!.allowsRotation = false
self.addChild(one)
nodes.append(one)
self.attachPoint(box, point2: one, box: true)
let two = SKSpriteNode(color: UIColor.greenColor(), size: CGSize(width: 20, height: 20))
two.position = CGPointMake(box.position.x, box.position.y + box.frame.size.height * 2)
two.physicsBody = SKPhysicsBody(rectangleOfSize: two.size)
two.physicsBody!.allowsRotation = false
self.addChild(two)
nodes.append(two)
self.attachPoint(box, point2: two, box: true)
let three = SKSpriteNode(color: UIColor.greenColor(), size: CGSize(width: 20, height: 20))
three.position = CGPointMake(box.position.x + box.frame.size.width/2, box.position.y + box.frame.size.height * 2)
three.physicsBody = SKPhysicsBody(rectangleOfSize: three.size)
three.physicsBody!.allowsRotation = false
self.addChild(three)
nodes.append(three)
self.attachPoint(box, point2: three, box: true)
self.attachPoint(one, point2: two, box: false)
self.attachPoint(two, point2: three, box: false)
}
func attachPoint(point1: SKSpriteNode, point2: SKSpriteNode, box: Bool){
if(box == true){
let newPoint1 = CGPointMake(self.frame.size.width/2 + point2.position.x, self.frame.size.height/2 + point1.position.y)
let newPoint2 = CGPointMake(self.frame.size.width/2 + point2.position.x, self.frame.size.height/2 + point2.position.y)
// create a joint between two bodies
let joint: SKPhysicsJointSpring = SKPhysicsJointSpring.jointWithBodyA(point1.physicsBody, bodyB: point2.physicsBody, anchorA: newPoint1, anchorB: newPoint2)
joint.damping = 2.0
joint.frequency = 9.0;
self.physicsWorld.addJoint(joint)
} else {
let newPoint1 = CGPointMake(self.frame.size.width/2 + point1.position.x, self.frame.size.height/2 + point1.position.y)
let newPoint2 = CGPointMake(self.frame.size.width/2 + point2.position.x, self.frame.size.height/2 + point2.position.y)
// create a joint between two bodies
let joint: SKPhysicsJointSpring = SKPhysicsJointSpring.jointWithBodyA(point1.physicsBody, bodyB: point2.physicsBody, anchorA: newPoint1, anchorB: newPoint2)
joint.damping = 2.0
joint.frequency = 9.0;
self.physicsWorld.addJoint(joint)
}
}
override func touchesBegan(touches: Set<NSObject>, withEvent event: UIEvent) {
/* Called when a touch begins */
let node = nodes[2]
node.physicsBody?.velocity.dy = 20000
}
override func update(currentTime: CFTimeInterval) {
/* Called before each frame is rendered */
}
}
これが結果です
この結果は変更なし
タッチ後、touchesBegan メソッドでコードを実行します
ステップ 2 の後、ノードは回転を開始し、ノードの下に落ちます。
彼らが評価しない場合は、チュートリアルに従って、ノードの色で SKShapeNode を作成する必要があります。しかし、SKShapeNode は高価です。この効果を達成できる別の方法はありますか?
最も簡単な方法は、水の上部に画像を使用して前後に移動させることですが、動的ではありません..
Tiny Wings をプレイしたことがある場合、そこの水はチュートリアルでまったく同じ方法で実装されています。
わかりません。SpriteKit で作成できないか、方法がわからないだけです。