Still sorry for my poor English.
A new problem about this.
what i want is all buttons(Sprite1-5,each have a unique random position) are overlapping by soldiers(large quantity) at the same time.
Then buttons will destroyed.
I tried if all buttons at the same position then soldiers overlap it, it is effective.
But if each buttons have a unique position, it isnt effective.
How should I doï¼Ÿthanks very much.