स्प्राइटकिट | स्विफ्ट 3 |

Question

नोड्स को SKWarpGeometry को लागू करने के लिए मैंने SKSpritenodes पर SKWarpGeometry को लागू करने के लिए कुछ ट्यूटोरियल खोजने के लिए इंटरनेट की गहराई की खोज नहीं की है।

मेरे पास एक ट्रैम्पोलिन एसकेएसप्रिटेनोड और एक गेंद एसकेएसप्रिटिनोड है।

ballNode = childNode(withName: "ballNode") as? SKSpriteNode 
    ballNode?.physicsBody = SKPhysicsBody(circleOfRadius: (ballNode?.frame.size.width)!/2) 
    ballNode?.physicsBody?.isDynamic = true 
    ballNode?.physicsBody?.usesPreciseCollisionDetection = true 
    ballNode?.zPosition = 3 
    ballNode?.physicsBody!.categoryBitMask = PhysicsCategory.ballCategory 
    ballNode?.physicsBody!.contactTestBitMask = PhysicsCategory.trampolineCategory 
    ballNode?.physicsBody!.collisionBitMask = PhysicsCategory.platformCategory 
    ballNode?.physicsBody?.velocity = CGVector(dx: 0.0, dy: 0.0) 
    ballNode?.move(toParent: _gameNode) 

enumerateChildNodes(withName: "trampoline") {trampolineNode,_ in 
    trampoline = trampolineNode as? SKSpriteNode 
    trampolineNode.physicsBody = SKPhysicsBody.init(rectangleOf: CGSize(width: (trampoline?.size.width)!, height: (trampoline?.size.height)!)) 
    trampolineNode.physicsBody?.categoryBitMask = PhysicsCategory.trampolineCategory 
    trampolineNode.physicsBody?.contactTestBitMask = PhysicsCategory.ballCategory 
    trampolineNode.physicsBody?.collisionBitMask = PhysicsCategory.ballCategory 
    trampolineNode.physicsBody?.affectedByGravity = false 
    trampolineNode.physicsBody?.isDynamic = false 
    trampolineNode.physicsBody?.usesPreciseCollisionDetection = true 
    trampolineNode.physicsBody?.restitution = 1 
    trampolineNode.move(toParent: _gameNode) 

जब गेंद नोड ट्रैम्पोलिन को हिट करता है। मैं trampoline नोड के शीर्ष के अंदर मोड़ना चाहता हूँ। हालांकि निम्नलिखित कोड चलाकर, ट्रैम्पोलिन छवि गायब हो जाती है।

if collision == PhysicsCategory.ballCategory | PhysicsCategory.trampolineCategory { 
     let src = [float2(0.0), float2(1.0), float2(2.0), 
        float2(3.0), float2(4.0), float2(5.0), 
        float2(6.0), float2(7.0), float2(8.0)] 

     let dst = [float2(0.0), float2(0.0), float2(2.0), 
        float2(3.0), float2(1.0), float2(5.0), 
        float2(6.0), float2(7.0), float2(8.0)] 

     warpGrid = SKWarpGeometryGrid(columns: 2, rows: 2, 
             sourcePositions: src, 
             destinationPositions: dst) 
     // 
     trampoline?.warpGeometry = warpGrid  <---This line removes the trampoline image, so I could only assume its the way I set up the source and destination points. 

     let transform = SKAction.warp(to: warpGrid!, duration: 1) 
     let transformAction = SKAction.repeat(transform!, count: 1) 
     trampoline?.run(transformAction)    
    } 

मैं ग्रिड नोड्स को गलत स्थापित कर सकता हूं लेकिन मुझे कोई संकेत नहीं है क्योंकि मुझे मार्गदर्शन करने के लिए कोई ट्यूटोरियल नहीं है। क्या किसी ने अभी तक एसकेजीमेट्री का उपयोग किया है?

Answer 1

इसे हल किया गया। उम्मीद है कि यह अन्य लोगों की मदद करता है !!!

//Create your SKSpritenodes 
ballNode = childNode(withName: "ballNode") as? SKSpriteNode 
ballNode?.physicsBody = SKPhysicsBody(circleOfRadius: (ballNode?.frame.size.width)!/2) 
ballNode?.physicsBody?.isDynamic = true 
ballNode?.physicsBody?.usesPreciseCollisionDetection = true 
ballNode?.zPosition = 3 
ballNode?.physicsBody!.categoryBitMask = PhysicsCategory.ballCategory 
ballNode?.physicsBody!.contactTestBitMask = PhysicsCategory.trampolineCategory 
ballNode?.physicsBody!.collisionBitMask = PhysicsCategory.platformCategory 
ballNode?.physicsBody?.velocity = CGVector(dx: 0.0, dy: 0.0) 
ballNode?.move(toParent: _gameNode) 

enumerateChildNodes(withName: "trampoline") {trampolineNode,_ in 
trampoline = trampolineNode as? SKSpriteNode 
trampolineNode.physicsBody = SKPhysicsBody.init(rectangleOf: CGSize(width: (trampoline?.size.width)!, height: (trampoline?.size.height)!)) 
trampolineNode.physicsBody?.categoryBitMask = PhysicsCategory.trampolineCategory 
trampolineNode.physicsBody?.contactTestBitMask = PhysicsCategory.ballCategory 
trampolineNode.physicsBody?.collisionBitMask = PhysicsCategory.ballCategory 
trampolineNode.physicsBody?.affectedByGravity = false 
trampolineNode.physicsBody?.isDynamic = false 
trampolineNode.physicsBody?.usesPreciseCollisionDetection = true 
trampolineNode.physicsBody?.restitution = 1 
trampolineNode.move(toParent: _gameNode) 

    // Declare the following SKWarpGeometryGrids 
    var trampolineWarpGrid: SKWarpGeometryGrid? 
    var trampolineNoWarpGrid: SKWarpGeometryGrid? 

    // For 2x2 grid - State the source positions 
    let sourcePositions: [vector_float2] = [ 
     vector_float2(0, 0), vector_float2(0.5, 0), vector_float2(1, 0), 
     vector_float2(0, 0.5), vector_float2(0.5, 0.5), vector_float2(1, 0.5), 
     vector_float2(0, 1), vector_float2(0.5, 1), vector_float2(1, 1) 
    ] 

    // For 2x2 grid - State the destination positions 
    // To make the dent, I changed row 3 column 2 value from (0.5, 1) to (0.5, 0.8) 
    let destinationPositions: [vector_float2] = [ 
     vector_float2(0, 0), vector_float2(0.5, 0), vector_float2(1, 0), 
     vector_float2(0, 0.5), vector_float2(0.5, 0.5), vector_float2(1, 0.5), 
     vector_float2(0, 1), vector_float2(0.5, 0.8), vector_float2(1, 1) 
    ] 

    //Create the 2x2 warp grid based on the source and destination positions 
    trampolineWarpGrid = SKWarpGeometryGrid(columns: 2, rows: 2, 
            sourcePositions: sourcePositions, 
            destinationPositions: destinationPositions) 

    //Create and assign a Grid to the SKSpritenode that has no warp effects 
    //Will be used to convert the trampoline back to original view 
    trampolineNoWarpGrid = SKWarpGeometryGrid(columns: 2, rows: 2) 
    trampoline?.warpGeometry = trampolineNoWarpGrid 

func didBegin(_ contact: SKPhysicsContact) { 
    let collision: UInt32 = contact.bodyA.categoryBitMask | contact.bodyB.categoryBitMask 

    if collision == PhysicsCategory.ballCategory | PhysicsCategory.trampolineCategory { 
    //Transform the trampoline grid to show dent 
    let transform = SKAction.warp(to: trampolineWarpGrid!, duration: 0.3) 
    //Warp the trampoline gird back to normal 
    let transformBack = SKAction.warp(to: trampolineNoWarpGrid!, duration: 0.3) 
    //Run Action 
    let transformAction = SKAction.sequence([transform!, transformBack!]) 
    trampoline?.run(SKAction.repeat(transformAction, count: 1)) 
}