unity拖拽 到固定位置_Unity3D拖动任意对象GameObject移动到任意地方
今天不是很忙，研究了一下拖拽GameObject移動(dòng)到任意位置，沿x軸和z軸移動(dòng),其他的也就不說(shuō)了，上代碼：using?UnityEngine;
using?System.Collections;
public?class?DragAndDrog?:?MonoBehaviour?{
private?GameObject?target;
private?bool?isMouseDrag;
private?Vector3?screenPosition;
private?Vector3?offset;
//?Use?this?for?initialization
void?Start?()?{
}
//?Update?is?called?once?per?frame
void?Update?()?{
GameObjectDragAndDrog();
}
//任意拖拽
private?GameObject?ReturnGameObjectDrag(out?RaycastHit?hit)
{
target?=?null;
Ray?ray?=?Camera.main.ScreenPointToRay(Input.mousePosition);
if?(Physics.Raycast(ray.origin,?ray.direction?*?10,?out?hit))
{
target?=?hit.collider.gameObject;
}
return?target;
}
//拖拽Updata
private?void?GameObjectDragAndDrog()
{
if?(Input.GetMouseButtonDown?(0))
{
RaycastHit?hitInfo;
target?=?ReturnGameObjectDrag(out?hitInfo);
if?(target?!=?null)
{
isMouseDrag?=?true;
screenPosition?=?Camera.main.WorldToScreenPoint(target.transform.position);
offset?=?target.transform.position?-?Camera.main.ScreenToWorldPoint(new?Vector3(Input.mousePosition.x,?Input.mousePosition.y,?screenPosition.z));
}
}
if?(Input.GetMouseButtonUp(0))
{
isMouseDrag?=?false;
}
if?(isMouseDrag)
{
Vector3?currentScreenSpace?=?new?Vector3(Input.mousePosition.x,?Input.mousePosition.y,?screenPosition.z);
Vector3?currentPosition?=?Camera.main.ScreenToWorldPoint(currentScreenSpace)?+?offset;
target.transform.localPosition?=?new?Vector3(currentPosition.x,?currentPosition.y,?currentPosition.z);
}
}
}
本腳本可以加載任意一個(gè)對(duì)象GameObject，場(chǎng)景中所有帶Collider的對(duì)象，當(dāng)鼠標(biāo)點(diǎn)擊拖動(dòng)時(shí)候都可以沿x和z軸拖動(dòng)。之前，都是要拖動(dòng)那個(gè)GameObject就會(huì)寫(xiě)一個(gè)腳本掛在上面，今天實(shí)現(xiàn)了不用每一個(gè)要拖動(dòng)的GameObject都掛載腳本，也不用將移動(dòng)的GameObject賦給某個(gè)變量。
總結(jié)
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