调试背景
2D游戏的制作最重要的是层的设置
先设置两个层①Layers②Edit Layers③Sorting Layers添加两个层BackGround和Front
调试大雁
创建2D object改名BackGround设置背景图片修改为BackGround 0层
创建2D object添加大雁图片Ctrl+6，保存，把大雁动态模型全选，插入。调整时间可以看起来舒服，调整所在层为BackGround 1层
添加脚本使大雁从屏幕右边开始飞入左边飞出
publicclassSwanFly:MonoBehaviour{
//天鹅起飞的位置
privateVector3startPosition;
publicfloatspeed;
// Use this for initialization
voidStart () {
Debug.Log("屏幕的宽度"+Screen.width);
Debug.Log("屏幕的高度"+Screen.height);
Vector3screenSize =Camera.main.ScreenToWorldPoint(newVector3(Screen.width,Screen.height, 0));
floatswanExtentsX = transform.GetComponent<Renderer>().bounds.extents.x;
startPosition = newVector3(screenSize.x + transform.position.y, transform.position.z);
transform.position = startPosition;
}
// Update is called once per frame
voidUpdate () {
if(transform.position.x <-startPosition.x)
{
transform.position = startPosition;
}
transform.Translate(Vector3.right * -1 * speed *Time.deltaTime);
}
}
调整草地
设置空物体，在其中创建草地，两边超过相机边框。
在空物体上挂载BoxCollider2D组件，点击EditCollider会有一个绿色方框调整位置
如图所示即可
游戏对象设置
设置球添加Front0层，挂载Circle Collider2D和Rigibody2D组件
创建一个2D空物体挂载脚本，随机产生球
publicclassCreatBall:MonoBehaviour{
//保龄球预制体
publicGameObjectballPrefab;
//产生的范围
privatefloatcreateRange;
//产生的时间
publicfloatrate;
// Use this for initialization
voidStart () {
Vector3screenSize =Camera.main.ScreenToWorldPoint(newVector3(Screen.width,Screen.height, 0));
floatballExtentsX = ballPrefab.transform.GetComponent<Renderer>().bounds.extents.x;
createRange = screenSize.x -ballExtentsX;
}
// Update is called once per frame
voidUpdate () {
rate -= Time.deltaTime;
if(rate<0)
{
Vector3position =newVector3(Random.Range(-createRange, createRange),transform.position.y, transform.position.z);
GameObjectball = Instantiate(ballPrefab, position,Quaternion.identity)asGameObject;
//下一个保龄球产生的时间
rate = Random.Range(1.5f, 2.5f);
Destroy(ball, 3f);
}
}
}
调试接物体的物体
创建两个2D object分别添加帽子的内沿和外沿，外沿为内沿的子物体
内沿层Front 0层 外延层Front 1层
分别挂载Edge Collider 2D组件，内沿勾选Is Trigger，发生碰撞
设置Edit Collider
外沿 
挂载脚本接球然后销毁产生粒子效果
publicclassHatController:MonoBehaviour{
//帽子移动的范围
privatefloatHatMoveRange;
//粒子产生的位置
publicGameObjectparticleSystemPoint;
publicGameObjectparticle;
// Use this for initialization
voidStart () {
Vector3screenSize =Camera.main.ScreenToWorldPoint(newVector3(Screen.width,Screen.height, 0));
floathatExtentsX = transform.GetComponent<Renderer>().bounds.extents.x;
HatMoveRange = screenSize.x -hatExtentsX;
}
// Update is called once per frame
voidUpdate () {
Vector3mousePosition =Camera.main.ScreenToWorldPoint(Input.mousePosition);
floatx =Mathf.Clamp(mousePosition.x,-HatMoveRange, HatMoveRange);
transform.position = newVector3(x, transform.position.y, transform.position.z);
}
voidOnTriggerEnter2D(Collider2Dcol)
{
//粒子产生
GameObjecttempParticle = Instantiate(particle,particleSystemPoint.transform.position,Quaternion.identity)asGameObject;
Destroy(col.gameObject);
Destroy(tempParticle, 2f);
}
}
设置粒子效果
设置预制体的Renderer中Sorting Layer为Front 2层
离子产生的位置设置一个2D空物体成为帽子内沿的子物体，调整位置
