小编Ana*_*and的帖子

我正在使用以下代码绘制线条,它的工作效果令人惊叹,

http://www.merowing.info/2012/04/drawing-smooth-lines-with-cocos2d-ios-inspired-by-paper/

现在我想......

1>检测线是否与自身相交.2)检测CCSprite是否在此闭合线内.

在搜索时,我遇到了LineIntersection的许多逻辑,但没有一个是准确的.我给它们中的一个检测交叉点,但是当没有交叉线时它也检测到它.

1. 第一种方法

   - (BOOL) lineIntersectOccured:(CGPoint)t1 pointEnd:(CGPoint)t2
   {
       BOOL result = NO;
       int pointsCount = [arrlinePoints count];
   
       CGPoint cp1;
       CGPoint cp2;
   
       for(int i = 0, j = 1; j < pointsCount; i++,j++)
       {
           [[arrlinePoints objectAtIndex:i] getValue:&cp1];
           [[arrlinePoints objectAtIndex:j] getValue:&cp2];
   
           // lines connected do not need to be included.
           if((cp2.x == t1.x && cp2.y == t1.y) || (cp1.x == t2.x && cp1.y == t2.y))
           {
               continue;
           }
   
           CGPoint diffLA = CGPointMake(cp2.x - cp1.x,cp2.y - cp1.y);
           CGPoint diffLB = …

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我有2个单独的项目,一个在Cocos2dx v3.6中,一个在Swift中.我想从Swift项目开始游戏.我该怎么做？

我已将整个cocos2dx项目复制到我的Swift项目中,然后在swift中创建了一个View Controller,并尝试打开CCDirector作为项目的根视图.但是无法找到导演,我试图用#import"cocos2d.h"导入cocos2dx ,但它给了我"未定义文件"的错误.

Apple Swift版本1.2

我有2D数组如下:

NSMutableArray *world=[[NSMutableArray alloc]init];
NSNumber *number;
NSMutableArray *inner;

int scr=2;
number=[[NSNumber alloc]initWithInt:scr];
inner=[[NSMutableArray alloc]initWithObjects:@"ABC",number,nil];
[world addObject:inner];

scr=6;
number=[[NSNumber alloc]initWithInt:scr];
inner=[[NSMutableArray alloc]initWithObjects:@"XYZ",number,nil];
[world addObject:inner];

scr=1;
number=[[NSNumber alloc]initWithInt:scr];
inner=[[NSMutableArray alloc]initWithObjects:@"PQR",number,nil];
[world addObject:inner];

scr=5;
number=[[NSNumber alloc]initWithInt:scr];
inner=[[NSMutableArray alloc]initWithObjects:@"DEF",number,nil];
[world addObject:inner];

scr=3;
number=[[NSNumber alloc]initWithInt:scr];
inner=[[NSMutableArray alloc]initWithObjects:@"LMN",number,nil];
[world addObject:inner];

现在,我想对world数组进行排序以获得以下结果,

XYZ 6
DEF 5
LMN 3
ABC 2
PQR 1

任何人都可以帮助我,提前谢谢...