fix scene only spawn in a small area in center. delete room type attack target. make no more enemy spawn in go target. free mode enemy number change to 3.
fix target attack always win in first round.
太多了...总之能用了，就这样吧，也懒得用英文写了(;´Д`) ParameterContainer用于管理所有的Reward和Parameter. TargetController用于生成目标，然后再让SceneBlockContainer实际生成目标块，并且兼顾reward计算功能和目标观察结果的获取. EnemyContainer用于生成和删除敌人. SceneBlockContainer用于生成和删除目标块. States用于管理HP. SceneBlock用于管理目标块的...一堆东西，比如目标大小，目标区内人数等和目标所属状态等.
