// Update is called once per frame
void Update()
{
// 鼠标按下
if (Input.GetMouseButtonDown(0))
{
//屏幕坐标转化成空间坐标
firstPosition = Camera.main.ScreenToWorldPoint(new Vector3(Input.mousePosition.x, Input.mousePosition.y, -1));
}
// 鼠标提起
if (Input.GetMouseButtonUp(0))
{
secondPosition = Camera.main.ScreenToWorldPoint(new Vector3(Input.mousePosition.x, Input.mousePosition.y, -1));
if (fruitSliced == null)
{
rayPosition = (firstPosition + secondPosition) / 2;
}
float angle = 0;
// 计算刀光倾斜的角度
if (secondPosition.x != firstPosition.x)
{
angle = Mathf.Atan((secondPosition.y - firstPosition.y) / (secondPosition.x - firstPosition.x));
}
else
{
angle = Mathf.PI / 2;
}
float scale = 1;
// 计算刀光的缩放因子，使刀光的大小和鼠标在屏幕上划过的长度有关
scale = Mathf.Sqrt(Mathf.Abs((firstPosition.x - secondPosition.x) * (firstPosition.x - secondPosition.x) + (firstPosition.y - secondPosition.y) * (firstPosition.y - secondPosition.y))) / 2;
// 当第一点和第二点不重合的时候
if (secondPosition.x != firstPosition.x || firstPosition.y != secondPosition.y)
{
rayPosition.z = -1;
// 创建刀光
knifeRayObj = Instantiate(knifeRay, rayPosition, Quaternion.AngleAxis(angle * 180 / Mathf.PI, Vector3.forward)) as GameObject;
knifeRayObj.transform.localScale = new Vector3(scale, scale / 2, 1);
// 产生了刀光
//isRay = true;
// 如果水果被切，创建被切的水果
if (fruitSliced != null)
{
// 创建Slash
if (angle > 0 && angle < Mathf.PI / 6 || angle > -Mathf.PI / 6 && angle < 0)
{
slashHObj = Instantiate(slashH, rayPosition + new Vector3(1f, 0, 0), Quaternion.identity) as GameObject;
SetColor(slashHObj);
Destroy(slashHObj, 1f);
}
else if (angle > Mathf.PI / 3 && angle < Mathf.PI / 2 || angle > -Mathf.PI / 2 && angle < -Mathf.PI / 3)
{
slashVObj = Instantiate(slashV, rayPosition + new Vector3(1f, 0, 0), Quaternion.identity) as GameObject;
SetColor(slashVObj);
Destroy(slashVObj, 1f);
}
else
{
slashObj = Instantiate(slash, rayPosition + new Vector3(1f, 0, 0), Quaternion.identity) as GameObject;
SetColor(slashObj);
Destroy(slashObj, 1f);
}
// 如果不是田鼠，加分
if (fruitSliced.name != "hamster000(Clone)")
{
// 如果是金色苹果，创建金色水果
if (fruitSliced.name == "goldApple00(Clone)")
{
goldFruitObj = Instantiate(goldFruit, new Vector3(0, 0, 0), Quaternion.identity) as GameObject;
Destroy(goldFruitObj, 1f);
score.AddGoldScore();
}
else
{
score.AddScore();
}
}
// 创建被切的水果
fruitSliced.GetComponent <HitByKnife>().isHited = false;
fruitSliced.GetComponent <HitByKnife>().SliceFruit();
}
// 一秒后销毁刀光
Destroy(knifeRayObj, 1.0f);
//isRay = false;
}
}
}