实现了小鸟的抬头低头效果,碰撞检测

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Assets/Scenes/SampleScene.unity

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   floatScall: 0.3
   floatRate: 1
-  gravityScall: 2.3
-  force: 330
+  downSpeed: -6
+  jumpSpeed: 6
+  reduceSpeed: 20
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Assets/Scripts/Bird.cs

-using System.Collections;
+using System;
+using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
@@ -8,9 +9,18 @@ public class Bird : MonoBehaviour
     private Vector3 startPos;//小鸟的初始位置
     public float floatScall=1;//浮动范围
     public float floatRate = 1;//浮动频率
-    public float gravityScall = 1;//小鸟重力
+
+    private float currentSpeed;//当前小鸟的速度
+    public float downSpeed = -5;//正常向下的速度
+    public float jumpSpeed=6;//起跳时的速度
+    public float reduceSpeed=20f;//减速度
+
+    private Quaternion upRotation=Quaternion.Euler(0,0,25);//向上的旋转
+    private Quaternion downRotation=Quaternion.Euler(0,0,-90);//向下的旋转
+
     private Rigidbody2D rig;//刚体
-    public float force=50;//力
+
+    public event Action<Collider2D> onTrigger;//事件:当碰撞触发
     private void Start()
     {
         startPos = transform.position;//记录小鸟的初始位置
@@ -23,23 +33,37 @@ public class Bird : MonoBehaviour
         transform.position =startPos+ Vector3.up * Mathf.Sin(Time.time* floatRate) *floatScall;
     }
 
-    public void UseGravity() 
-    {
-        rig.gravityScale = gravityScall;//设置重力值
-    }
 
     //小鸟飞和跳,被控制器调用
     public void Flay() 
     {
-        if (Input.GetMouseButtonDown(0))
+        //计算速度
+        if (currentSpeed>downSpeed)//如果当前速度大于正常向下速度,就让当前速度减小
+        {
+            currentSpeed -= reduceSpeed * Time.deltaTime;
+        }
+        //使用速度移动
+        transform.Translate(Vector3.up * currentSpeed * Time.deltaTime, Space.World);
+
+        //设置旋转
+        if (currentSpeed>0)
+        {
+            transform.rotation = Quaternion.Lerp(transform.rotation   ,    upRotation   ,   10f*Time.deltaTime);
+        }
+        else if(currentSpeed <-5.5f)
         {
-            Jump();
+            transform.rotation= Quaternion.RotateTowards(transform.rotation,downRotation,720*Time.deltaTime);
         }
     }
 
     public void Jump()
     {
-        rig.velocity = Vector2.zero;//刚体速度设置为0
-        rig.AddForce(Vector2.up * force);//加一个向上的力
+        currentSpeed = jumpSpeed;
+    }
+
+    //当触发器进入的时候
+    private void OnTriggerEnter2D(Collider2D collision)//collision 是对方的碰撞器组件
+    {
+        onTrigger?.Invoke(collision);  //    if (onTrigger!=null)   {  onTrigger(collision);  }
     }
 }

Assets/Scripts/GameController.cs

@@ -8,7 +8,41 @@ public class GameController : MonoBehaviour
     public MoveGroup moveGroup;
     public Bird bird;
     public GameState state = GameState.empty;//当前游戏状态
-    
+    private int score=0;//分数
+    bool stop = false;//小鸟停止下落
+    private void Start()
+    {
+        bird.onTrigger += BirdOnTrigger;
+    }
+
+    private void BirdOnTrigger(Collider2D other)
+    {
+        if (other.name=="Score")
+        {
+            print("加分");
+            score += 1;
+        }
+        else if (other.name.StartsWith("Pipe"))
+        {
+            print("游戏结束");
+            Over();
+        }
+        else if ( other.name == "GroundCollider")
+        {
+            if (state!= GameState.gameOver)//如果游戏之前没有结束,就先结束
+            {
+                Over();
+            }
+            
+            stop = true;
+        }
+    }
+
+    private void Over()
+    {
+        moveGroup.GetComponent<Rigidbody2D>().velocity = Vector2.zero;//水管和地板停止移动
+        state = GameState.gameOver;//切换游戏状态为结束状态
+    }
 
     private void Update()
     {
@@ -45,7 +79,6 @@ public class GameController : MonoBehaviour
         {
             moveGroup.pipGroup.SetParent(moveGroup.transform);//把水管设置为移动组的子物体
             bird.GetComponent<Animator>().enabled = true;//开启动画
-            bird.UseGravity();//小鸟使用重力
             bird.Jump();
             state = GameState.palying;
         }
@@ -53,13 +86,20 @@ public class GameController : MonoBehaviour
     //玩的状态
     private void Play()
     {
-
         bird. Flay();
+        //跳
+        if (Input.GetMouseButtonDown(0))
+        {
+            bird.Jump();
+        }
     }
 
     private void GameOver()
     {
-      
+        if (!stop)
+        {
+            bird.Flay();
+        }
     }
 }
 
@@ -71,6 +111,8 @@ public  enum GameState
     gameOver//游戏结束状态
 }
 
+
+
 /*public           公开的哪儿都能访问
    private          私有的只能在本类内部可以访问
    protected      收保护的,只能在本类内部和子类内部可以访问