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类似于弓箭手射出弓箭的效果。初始点完美落到目标点。
@ZkGame 应该可以直接用数学运算来实时计算位置坐标，毕竟抛物线方程y=ax²+b里的两个参数确定之后y和x的关系就是确定的，用一个变量记录x，通过计算式来实时获取y即可
@zjxdiu 好的。谢谢
