精灵套装游戏xcode中得分的奖励

Question

我正在制作一个游戏，我可以轻松地获得sklabelnode的分数，即使我在用户达到25分，50分等时如何获得奖励，但是当我达到50而且> 50即时获得青铜而不是银和黄金等等，我犯了一个错误。

@implementation MyScene {
int _gameScore;
SKNode *_gameLayer;}

-(void)didBeginContact:(SKPhysicsContact *)contact



 SKSpriteNode *coin = nil;
    if (_gameScore >= 25) {

        coin = [SKSpriteNode spriteNodeWithImageNamed:@"bronze"];
    } else if (_gameScore >= 50) {

        coin = [SKSpriteNode spriteNodeWithImageNamed:@"silver"];   
    }else if (_gameScore >= 100) {

        coin = [SKSpriteNode spriteNodeWithImageNamed:@"gold"];   
    }
    else {
        //blank coin
        coin = [SKSpriteNode spriteNodeWithImageNamed:@"noreward"];
    }

    if (coin != nil) {

        coin.position = CGPointMake(self.size.width/2, self.size.height/2 );
        coin.zPosition = 201;
         [coin setSize:CGSizeMake(100, 100)];

        [_gameLayer addChild:coin];
    }

Answer 1

你现在拥有它的方式，你会看到你的＆＃34;青铜＆＃34;任何时候_gameScore都大于或等于25。由于50和100也大于25，并且在检查25之后，您对它们的检查是，您永远不会看＆＃34;银＆＃34;或＆＃34;黄金＆＃34;

由于您使用>=，您的支票应该从最高到最低：

if (_gameScore >= 100) {

    coin = [SKSpriteNode spriteNodeWithImageNamed:@"gold"];   
} else if (_gameScore >= 50) {

    coin = [SKSpriteNode spriteNodeWithImageNamed:@"silver"];   
} else if (_gameScore >= 25) {

    coin = [SKSpriteNode spriteNodeWithImageNamed:@"bronze"];
} else {
    //blank coin
    coin = [SKSpriteNode spriteNodeWithImageNamed:@"noreward"];
}