void Update()
{
if (Input.GetMouseButtonDown(0))
{
Vector3 wp = Camera.main.ScreenToWorldPoint(Input.mousePosition);
Collider2D h = Physics2D.OverlapPoint(wp, 1 << LayerMask.NameToLayer("role"));
if (h)
{
print("你要做的事:");
}
}
}
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