“'objc_object *'和'float'类型的无效操作数”错误？

Question

当我尝试在 xcode 模拟器中测试我的游戏时，我收到以下错误。任何人都知道出了什么问题。顺便说一句，如果演员与物体发生碰撞，则行为是解锁新关卡：

第 49 行错误：“objc_object*”和“float”类型的操作数无效 转二进制

第 58 行错误：“objc_object*”和“float”类型的操作数无效 转二进制

第 73 行错误：iso c++ 禁止指针和指针之间的比较 整数

这里是IOS代码： 第 49 行：

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

第 58 行：

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

第 73 行：

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

行为的所有代码：

#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

看起来在所有三种情况下问题都是相同的 - 您正在尝试比较 NSNumber 对象。比较运算符（在您的情况下为<= 和>=）不会重载以接受NSNumber。

NSNumber本身有三个方法：isEqualToNumber:、isEqual:和compare:；这将比较两个 NSNumber 实例。

您还可以使用floatValue、inValue、等来比较NSNumber 的值。因此，例如，您最后的比较可能是：

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

或使用方法，而不是属性，语法：

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

顺便说一句，您似乎将游戏关卡存储为浮点数。我显然不了解您的应用程序，但将其存储为整数似乎更合乎逻辑，并且可以避免浮点舍入问题（取决于您对它们执行的操作）。