Cocos2d-x ccrandom_0_1 () has a bug.

The value range of ccrandom_0_1 () is [0-1] Note !!! : 1 is a closed interval, so the returned value can be 1.

You can see the source code of ccarray randomobject.

Ccobject * ccarray: randomobject () {If (data-> num = 0) return NULL; return data-> arr [(INT) (Data-> num * ccrandom_0_1 ()];}

For example, when there is only one element in ccarray, if the value of random is 1, then the value is the element whose index is 1. Array has only one element. Index is 0.

Therefore, the element whose index is 1 does not exist.

Randomobject () in ccarray has a bug.