物理邊緣IOS8，雪碧套件

Question

因此，在IOS遊戲教程之後，它的IO7並不多於8。

下面的代碼應該是一球蹦跳着，但只有反彈在屏幕的頂部和底部，如果它擊中側邊球進入屏幕

#import "GameScene.h" 

@implementation GameScene 

-(void)didMoveToView:(SKView *)view { 
    /* Setup your scene here */ 

self.backgroundColor =[SKColor whiteColor]; 
self.physicsBody = [SKPhysicsBody bodyWithEdgeLoopFromRect:self.frame]; 
self.physicsWorld.gravity = CGVectorMake(0, 0); 

SKSpriteNode *ball = [SKSpriteNode spriteNodeWithImageNamed:@"ball"]; 

ball.position = CGPointMake(CGRectGetMidX(self.frame),CGRectGetMidY(self.frame)); 

ball.physicsBody = [SKPhysicsBody bodyWithCircleOfRadius:ball.frame.size.width/2]; 

//ball.physicsBody.friction = 0; 
ball.physicsBody.linearDamping = 0; 
ball.physicsBody.restitution = 1; 


[self addChild:ball]; 

CGVector myVector = CGVectorMake(0, 5); 
[ball.physicsBody applyImpulse:myVector]; 
} 



-(void)update:(CFTimeInterval)currentTime { 
    /* Called before each frame is rendered */ 
} 

@end 

必須有東西簡單的在這裏，但我似乎無法找到在堆棧溢出

Answer 1

使用的NSLog的答案，檢查您的視圖的大小：NSLog(@"%f,%f",self.size.width,self.size.height);

沒有與SpriteKit引起視圖尺寸爲關閉一個什麼樣的問題你的期望。如果這是您的情況，請確保將視圖大小更改爲正確的大小：

-(void)didMoveToView:(SKView *)view { 
/* Setup your scene here */ 

self.size = self.view.frame.size; 
self.backgroundColor =[SKColor whiteColor]; 
self.physicsBody = [SKPhysicsBody bodyWithEdgeLoopFromRect:self.frame]; 
self.physicsWorld.gravity = CGVectorMake(0, 0); 

SKSpriteNode *ball = [SKSpriteNode spriteNodeWithImageNamed:@"ball"]; 

ball.position = CGPointMake(CGRectGetMidX(self.frame),CGRectGetMidY(self.frame)); 

ball.physicsBody = [SKPhysicsBody bodyWithCircleOfRadius:ball.frame.size.width/2]; 

//ball.physicsBody.friction = 0; 
ball.physicsBody.linearDamping = 0; 
ball.physicsBody.restitution = 1; 


[self addChild:ball]; 

CGVector myVector = CGVectorMake(50, 20); 
[ball.physicsBody applyImpulse:myVector]; 
} 



-(void)update:(CFTimeInterval)currentTime { 
/* Called before each frame is rendered */ 
}