[英]How to make a view scrollable to view the full scene with sprites with Swift and SpriteKit?
[英]how to randomly add sprites to scene
我試圖隨機添加多個圖像到我的場景。 我有4個名為Gem1,Gem2,Gem3和Gem4的圖像。 我被卡住了。 這是我到目前為止的代碼,但是有錯誤。 有人能幫助我嗎?
- (void)addGem {
// Create sprite
NSString *base = @"Gem";
uint32_t num = arc4random_uniform(4) + 1; //Generate a random number
NSString *GemName = [base stringByAppendingFormat:@"%d.png", num];
SKSpriteNode * Gem = [SKSpriteNode spriteNodeWithImageNamed:@"GemName"];
_gem = Gem;
Gem.physicsBody = [SKPhysicsBody bodyWithRectangleOfSize:Gem.size]; // 1
Gem.physicsBody.dynamic = YES; // 2
Gem.physicsBody.categoryBitMask = GemCategory; // 3
Gem.physicsBody.contactTestBitMask = monsterCategory; // 4
Gem.physicsBody.collisionBitMask = 0;
int minx = 200;
int maxx = 1000;
int rangex = maxx - minx;
int actualx = (arc4random() % rangex) + minx;
int minY = 900;
int maxY = 1200;
int rangeY = maxY - minY;
int actualY = (arc4random() % rangeY) + minY;
Gem.position = CGPointMake(actualx, actualY);
[_background addChild:Gem];
[self runAction:[SKAction sequence:@[
[SKAction waitForDuration:5],
[SKAction performSelector:@selector(addGem) onTarget:self],]]];
}
只需刪除“”即可。 :D
從
SKSpriteNode * Gem = [SKSpriteNode spriteNodeWithImageNamed:@"GemName"];
至
SKSpriteNode * Gem = [SKSpriteNode spriteNodeWithImageNamed:GemName];
需要您發布“ addGem”方法來幫助您解決職位問題; 如果有的話。
SKSpriteNode * Gem = [SKSpriteNode spriteNodeWithImageNamed:@"GemName"];
這里GemName
是一個變量,不應將其用""
包裹,只需將其刪除即可。
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