「類型'objc_object *'和'float'錯誤的操作數無效？

Question

當我嘗試在xcode模擬器中測試我的遊戲時，我在下面看到這些錯誤。任何人都有一個想法是什麼問題。順便說一句的behaivor是解鎖一個新的水平，如果演員與物體碰撞：

錯誤線49：類型「objc_object *」和「浮動」無效操作數 在58行二進制

錯誤：的類型的 'objc_object *' 和在管線73 '浮動' 二進制

出錯無效操作數：ISO C++禁止指針和 整數之間的比較

這裏是IOS代碼：49 行：

if(([mActor touchedActor] && ([self getGameAttribute:@"Highest Level Completed"] >= [self asNumber:[NSNumber numberWithFloat:_levelnumber]]))) 

行58：

if(([self getGameAttribute:@"Highest Level Completed"] >= [self asNumber:[NSNumber numberWithFloat:_levelnumber]])) 

線73：

if(([mActor touchedActor] && (([self getGameAttribute:@"Highest Level Completed"] <= 5) && [[Game game] purchasedProduct:@"MyID"]))) 

所有行爲的代碼：

#import <Box2D/Box2D.h> 
#import <AudioToolbox/AudioServices.h> 
#import <Foundation/Foundation.h> 
#import "ActorScript.h" 

#import "Script.h" 

#import "Actor.h" 
#import "ActorType.h" 
#import "Assets.h" 
#import "Behavior.h" 
#import "Collision.h" 
#import "CollisionPoint.h" 
#import "Game.h" 
#import "GameModel.h" 
#import "GroupDef.h" 
#import "FadeInTransition.h" 
#import "FadeOutTransition.h" 
#import "Region.h" 
#import "Runnable.h" 
#import "Scene.h" 
#import "SHThumbstick.h" 
#import "Sparrow.h" 
#import "Transition.h" 



@interface Design_190_190_Clicktoplaylevel : ActorScript 
{ 
    @public 
     NSString* tempHolder; 

Scene* _Scenetoplay; 

NSString* _Levellabel; 

float _levelnumber; 

} 
@end 

@implementation Design_190_190_Clicktoplaylevel 

-(void)load 
{ 
     [self addWhenUpdatedListener:nil func:^(NSMutableArray* list, Script* theScript){ 
Design_190_190_Clicktoplaylevel* self = (Design_190_190_Clicktoplaylevel*) theScript; 

        if(([mActor touchedActor] && ([self getGameAttribute:[self asNumber:[NSNumber numberWithFloat:[[self getGameAttribute:@"Highest Level Completed"] floatValue]]]] >= [self asNumber:[NSNumber numberWithFloat:_levelnumber]]))) 
{ 
       [self setGameAttribute:[[self getGameAttribute:@"Current Level"] floatValue] value:[NSNumber numberWithFloat:[self asNumber:[NSNumber numberWithFloat:_levelnumber]]]]; 
       [self switchScene:_Scenetoplay.ID leave:[self createFadeOut:((1000*1)) color:0] enter:[self createFadeIn:((1000*1)) color:0]]; 
} 

}]; 
    [self addWhenDrawingListener:nil func:^(SPRenderSupport* g, int x, int y, BOOL screen, NSMutableArray* list, Script* theScript){ 
Design_190_190_Clicktoplaylevel* self = (Design_190_190_Clicktoplaylevel*) theScript; 
     if(([self getGameAttribute:[self asNumber:[NSNumber numberWithFloat:[[self getGameAttribute:@"Highest Level Completed"] floatValue]]]] >= [self asNumber:[NSNumber numberWithFloat:_levelnumber]])) 
{ 
      [mActor setAnimation:@"Animation 1"]; 
      [[Game game] setFont:[ self getFont:52] size:1]; 
      [[Game game] drawString:_Levellabel x:(([mActor getWidth] - [[Game game] getWidthForString:[ self getFont:52] string:_Levellabel])/2) y:30]; 
} 

     else 
{ 
      [mActor setAnimation:@"Animation 0"]; 
} 

}]; 
    [self addWhenUpdatedListener:nil func:^(NSMutableArray* list, Script* theScript){ 
Design_190_190_Clicktoplaylevel* self = (Design_190_190_Clicktoplaylevel*) theScript; 
        if(([mActor touchedActor] && (([self getGameAttribute:[self asNumber:[NSNumber numberWithFloat:[[self getGameAttribute:@"Highest Level Completed"] floatValue]]]] <= [self asNumber:[NSNumber numberWithFloat:5]]) && [[Game game] purchasedProduct:@"MyID"]))) 
{ 
       [self setGameAttribute:[[self getGameAttribute:@"Current Level"] floatValue] value:[NSNumber numberWithFloat:[self asNumber:[NSNumber numberWithFloat:_levelnumber]]]]; 
       [self switchScene:_Scenetoplay.ID leave:[self createFadeOut:((1000*1)) color:0] enter:[self createFadeIn:((1000*1)) color:0]]; 
} 

      else if((([mActor touchedActor] && [self sameAs:[self getGameAttribute:[self asNumber:[NSNumber numberWithFloat:[[self getGameAttribute:@"Highest Level Completed"] floatValue]]]] two:[NSNumber numberWithFloat:[self asNumber:[NSNumber numberWithFloat:5]]]]) && !([[Game game] purchasedProduct:@"MyID"]))) 
{ 
       return; 
} 


}]; 

} 




-(void)forwardMessage:(NSString*)msg 
{ 

Answer 1

它看起來li在所有三種情況下，問題都是一樣的 - 你試圖比較NSNumber對象。比較運算符（您的案例中的<= & >=）不會超載爲接受NSNumber。

NSNumber本身有三種方法：isEqualToNumber:,isEqual:和compare:;它將比較兩個NSNumber實例。

也可以使用floatValue，inValue，等比較NSNumber的價值。因此，例如，你最後的比較可能是：

[self getGameAttribute:@"Highest Level Completed"].intValue <= 5 

或使用方法，而不是財產，語法：

[[self getGameAttribute:@"Highest Level Completed"] intValue] <= 5 

BTW你似乎有你的遊戲等級存儲爲一個浮點數。我顯然不知道你的應用程序，但將它作爲一個整數存儲似乎更合乎邏輯，並避免了浮點舍入（取決於你對它們執行的操作）的問題。