SIKI学习——贪吃蛇案例05
2024-05-12 06:46:56
01-处理蛇身的生成
将Sh贪吃蛇头更名为SnakeHead，新建Image更名为SnakeBody
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
public class SnakeHead : MonoBehaviour
{public List<Transform> bodyList = new List<Transform>();//存储身体的位置public float velocity=0.35f;//每隔多久要调用，实际就相当于速度public int step;//小蛇每一步要走的路private int x;//x和Y都是移动的增量private int y;private Vector3 HeadPos;//记录头的位置private Transform canvas;public GameObject bodyPrefab;//蛇身预制体public Sprite[] bodySprites = new Sprite[2];void Start(){InvokeRepeating("Move",0,velocity);x = 0;//刚开始的时候，贪吃蛇就会往上走y =step;}void Update(){if (Input.GetKeyDown(KeyCode.Space))//CancelInvoke()取消当前的Invoke{CancelInvoke();InvokeRepeating("Move", 0, velocity-0.2f);//跑快}if (Input.GetKeyUp(KeyCode.Space)){CancelInvoke();InvokeRepeating("Move", 0, velocity);//减速就是回到正常速度}if (Input.GetKey(KeyCode.W)&&y!=-step)//y!=-step加这句是蛇头向下的时候不是直接向下的{gameObject.transform.localRotation = Quaternion.Euler(0,0,0);//将Float值转换成四元数x = 0;y = step;}if (Input.GetKey(KeyCode.S)&&y != step){gameObject.transform.localRotation = Quaternion.Euler(0, 0, 180);//将Float值转换成四元数x = 0;y = -step;}if (Input.GetKey(KeyCode.A) && x != step){gameObject.transform.localRotation = Quaternion.Euler(0, 0, 90);//将Float值转换成四元数x = -step;y = 0;}if (Input.GetKey(KeyCode.D) && x != -step){gameObject.transform.localRotation = Quaternion.Euler(0, 0, -90);//将Float值转换成四元数x = step;y = 0;}}/// <summary>/// 头部的移动/// </summary>void Move(){HeadPos = gameObject.transform.localPosition;gameObject.transform.localPosition = new Vector3(HeadPos.x + x,HeadPos.y+y,HeadPos.z);}/// <summary>/// 生成蛇身/// </summary>void Grow(){int index=(bodyList.Count%2==0)?0:1;GameObject body = Instantiate(bodyPrefab);body.GetComponent<Image>().sprite = bodySprites[index];body.transform.SetParent(canvas,false);bodyList.Add(body.transform);}private void OnTriggerEnter2D(Collider2D collision){if (collision.gameObject.CompareTag("Food"))//也可以写成collision.tag == "Food"{Destroy(collision.gameObject);FoodMaker.Instance.MakeFood();}}
}
02-处理蛇身的移动之方法一
用移动方法二，这个不适合双色蛇身
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using UnityEngine;
using UnityEngine.UI;
public class SnakeHead : MonoBehaviour
{public List<Transform> bodyList = new List<Transform>();//存储身体的位置public float velocity=0.35f;//每隔多久要调用，实际就相当于速度public int step;//小蛇每一步要走的路private int x;//x和Y都是移动的增量private int y;private Vector3 HeadPos;//记录头的位置private Transform canvas;public GameObject bodyPrefab;//蛇身预制体public Sprite[] bodySprites = new Sprite[2];private void Awake(){canvas = GameObject.Find("Canvas").transform;}void Start(){InvokeRepeating("Move",0,velocity);x = 0;//刚开始的时候，贪吃蛇就会往上走y =step;}void Update(){if (Input.GetKeyDown(KeyCode.Space))//CancelInvoke()取消当前的Invoke{CancelInvoke();InvokeRepeating("Move", 0, velocity-0.2f);//跑快}if (Input.GetKeyUp(KeyCode.Space)){CancelInvoke();InvokeRepeating("Move", 0, velocity);//减速就是回到正常速度}if (Input.GetKey(KeyCode.W)&&y!=-step)//y!=-step加这句是蛇头向下的时候不是直接向下的{gameObject.transform.localRotation = Quaternion.Euler(0,0,0);//将Float值转换成四元数x = 0;y = step;}if (Input.GetKey(KeyCode.S)&&y != step){gameObject.transform.localRotation = Quaternion.Euler(0, 0, 180);//将Float值转换成四元数x = 0;y = -step;}if (Input.GetKey(KeyCode.A) && x != step){gameObject.transform.localRotation = Quaternion.Euler(0, 0, 90);//将Float值转换成四元数x = -step;y = 0;}if (Input.GetKey(KeyCode.D) && x != -step){gameObject.transform.localRotation = Quaternion.Euler(0, 0, -90);//将Float值转换成四元数x = step;y = 0;}}/// <summary>/// 头部的移动/// </summary>void Move(){HeadPos = gameObject.transform.localPosition;gameObject.transform.localPosition = new Vector3(HeadPos.x + x,HeadPos.y+y,HeadPos.z);//Grow();//如果放在这里还来不及显示，就被下面的代码排了位置，但是要列出标识位，管一下开关if (bodyList.Count > 0){bodyList.Last().localPosition = HeadPos;//直接返回最后一个元素bodyList.Insert(0, bodyList.Last());bodyList.RemoveAt(bodyList.Count - 1);}}/// <summary>/// 生成蛇身/// </summary>void Grow(){int index=(bodyList.Count%2==0)?0:1;GameObject body = Instantiate(bodyPrefab,new Vector3(2000,2000,0),Quaternion.identity);//new Vector3(2000,2000,0)生成的时候放在看不到的位置，这样就不会显示在中间了body.GetComponent<Image>().sprite = bodySprites[index];body.transform.SetParent(canvas,false);bodyList.Add(body.transform);}private void OnTriggerEnter2D(Collider2D collision){if (collision.gameObject.CompareTag("Food"))//也可以写成collision.tag == "Food"{Destroy(collision.gameObject);Grow();//吃了食物之后立马调用FoodMaker.Instance.MakeFood();}}
}
03-处理蛇身的移动之方法二
using System.Collections;
using System.Collections.Generic;
//using System.Linq;
using UnityEngine;
using UnityEngine.UI;
public class SnakeHead : MonoBehaviour
{public List<Transform> bodyList = new List<Transform>();//存储身体的位置public float velocity=0.35f;//每隔多久要调用，实际就相当于速度public int step;//小蛇每一步要走的路private int x;//x和Y都是移动的增量private int y;private Vector3 HeadPos;//记录头的位置private Transform canvas;public GameObject bodyPrefab;//蛇身预制体public Sprite[] bodySprites = new Sprite[2];private void Awake(){canvas = GameObject.Find("Canvas").transform;}void Start(){InvokeRepeating("Move",0,velocity);x = 0;//刚开始的时候，贪吃蛇就会往上走y =step;}void Update(){if (Input.GetKeyDown(KeyCode.Space))//CancelInvoke()取消当前的Invoke{CancelInvoke();InvokeRepeating("Move", 0, velocity-0.2f);//跑快}if (Input.GetKeyUp(KeyCode.Space)){CancelInvoke();InvokeRepeating("Move", 0, velocity);//减速就是回到正常速度}if (Input.GetKey(KeyCode.W)&&y!=-step)//y!=-step加这句是蛇头向下的时候不是直接向下的{gameObject.transform.localRotation = Quaternion.Euler(0,0,0);//将Float值转换成四元数x = 0;y = step;}if (Input.GetKey(KeyCode.S)&&y != step){gameObject.transform.localRotation = Quaternion.Euler(0, 0, 180);//将Float值转换成四元数x = 0;y = -step;}if (Input.GetKey(KeyCode.A) && x != step){gameObject.transform.localRotation = Quaternion.Euler(0, 0, 90);//将Float值转换成四元数x = -step;y = 0;}if (Input.GetKey(KeyCode.D) && x != -step){gameObject.transform.localRotation = Quaternion.Euler(0, 0, -90);//将Float值转换成四元数x = step;y = 0;}}/// <summary>/// 头部的移动/// </summary>void Move(){HeadPos = gameObject.transform.localPosition;//保存下来蛇头移动前的位置gameObject.transform.localPosition = new Vector3(HeadPos.x + x,HeadPos.y+y,HeadPos.z);//蛇头向期望位置移动//Grow();//如果放在这里还来不及显示，就被下面的代码排了位置，但是要列出标识位，管一下开关if (bodyList.Count > 0){//由于我们是双色蛇身，此方法弃用//bodyList.Last().localPosition = HeadPos;//直接返回最后一个元素//将蛇尾移动到蛇头移动前的位置//bodyList.Insert(0, bodyList.Last());//将蛇尾在List中的位置更新到最前//bodyList.RemoveAt(bodyList.Count - 1);//移除List最末尾的蛇尾引用//由于我们是双色蛇身，使用此方法达到显示目的for (int i = bodyList.Count-2; i>=0; i--)//是从后往前开始移动的蛇身 i = bodyList.Count-2{bodyList[i + 1].localPosition = bodyList[i].localPosition;//每一个蛇身都移动到他前面一个节点的位置}bodyList[0].localPosition = HeadPos;//第一个蛇身移动到蛇头移动前的位置}}/// <summary>/// 生成蛇身/// </summary>void Grow(){int index=(bodyList.Count%2==0)?0:1;刚开始时候bodyList.Count为0，GameObject body = Instantiate(bodyPrefab,new Vector3(2000,2000,0),Quaternion.identity);//new Vector3(2000,2000,0)生成的时候放在看不到的位置，这样就不会显示在中间了body.GetComponent<Image>().sprite = bodySprites[index];body.transform.SetParent(canvas,false);bodyList.Add(body.transform);}private void OnTriggerEnter2D(Collider2D collision){if (collision.gameObject.CompareTag("Food"))//也可以写成collision.tag == "Food"{Destroy(collision.gameObject);Grow();//吃了食物之后立马调用FoodMaker.Instance.MakeFood();}}
}
04-让蛇可以通过边界进行传送
给SnakeBody添加标签Body，以便于识别撞到自己的时候会死亡。
using System.Collections;
using System.Collections.Generic;
//using System.Linq;
using UnityEngine;
using UnityEngine.UI;
public class SnakeHead : MonoBehaviour
{public List<Transform> bodyList = new List<Transform>();//存储身体的位置public float velocity=0.35f;//每隔多久要调用，实际就相当于速度public int step;//小蛇每一步要走的路private int x;//x和Y都是移动的增量private int y;private Vector3 HeadPos;//记录头的位置private Transform canvas;public GameObject bodyPrefab;//蛇身预制体public Sprite[] bodySprites = new Sprite[2];private void Awake(){canvas = GameObject.Find("Canvas").transform;}void Start(){InvokeRepeating("Move",0,velocity);x = 0;//刚开始的时候，贪吃蛇就会往上走y =step;}void Update(){if (Input.GetKeyDown(KeyCode.Space))//CancelInvoke()取消当前的Invoke{CancelInvoke();InvokeRepeating("Move", 0, velocity-0.2f);//跑快}if (Input.GetKeyUp(KeyCode.Space)){CancelInvoke();InvokeRepeating("Move", 0, velocity);//减速就是回到正常速度}if (Input.GetKey(KeyCode.W)&&y!=-step)//y!=-step加这句是蛇头向下的时候不是直接向下的{gameObject.transform.localRotation = Quaternion.Euler(0,0,0);//将Float值转换成四元数x = 0;y = step;}if (Input.GetKey(KeyCode.S)&&y != step){gameObject.transform.localRotation = Quaternion.Euler(0, 0, 180);//将Float值转换成四元数x = 0;y = -step;}if (Input.GetKey(KeyCode.A) && x != step){gameObject.transform.localRotation = Quaternion.Euler(0, 0, 90);//将Float值转换成四元数x = -step;y = 0;}if (Input.GetKey(KeyCode.D) && x != -step){gameObject.transform.localRotation = Quaternion.Euler(0, 0, -90);//将Float值转换成四元数x = step;y = 0;}}/// <summary>/// 头部的移动/// </summary>void Move(){HeadPos = gameObject.transform.localPosition;//保存下来蛇头移动前的位置gameObject.transform.localPosition = new Vector3(HeadPos.x + x,HeadPos.y+y,HeadPos.z);//蛇头向期望位置移动//Grow();//如果放在这里还来不及显示，就被下面的代码排了位置，但是要列出标识位，管一下开关if (bodyList.Count > 0){//由于我们是双色蛇身，此方法弃用//bodyList.Last().localPosition = HeadPos;//直接返回最后一个元素//将蛇尾移动到蛇头移动前的位置//bodyList.Insert(0, bodyList.Last());//将蛇尾在List中的位置更新到最前//bodyList.RemoveAt(bodyList.Count - 1);//移除List最末尾的蛇尾引用//由于我们是双色蛇身，使用此方法达到显示目的for (int i = bodyList.Count-2; i>=0; i--)//是从后往前开始移动的蛇身 i = bodyList.Count-2{bodyList[i + 1].localPosition = bodyList[i].localPosition;//每一个蛇身都移动到他前面一个节点的位置}bodyList[0].localPosition = HeadPos;//第一个蛇身移动到蛇头移动前的位置}}/// <summary>/// 生成蛇身/// </summary>void Grow(){int index=(bodyList.Count%2==0)?0:1;GameObject body = Instantiate(bodyPrefab,new Vector3(2000,2000,0),Quaternion.identity);//new Vector3(2000,2000,0)生成的时候放在看不到的位置，这样就不会显示在中间了body.GetComponent<Image>().sprite = bodySprites[index];body.transform.SetParent(canvas,false);bodyList.Add(body.transform);}private void OnTriggerEnter2D(Collider2D collision){//食物 if (collision.gameObject.CompareTag("Food"))//也可以写成collision.tag == "Food"{Destroy(collision.gameObject);Grow();//吃了食物之后立马调用FoodMaker.Instance.MakeFood();}else if (collision.gameObject.CompareTag("Body")){Debug.Log("Die");}else {switch (collision.gameObject.name){case "Up":transform.localPosition = new Vector3(transform.localPosition.x,-transform.localPosition.y+30,transform.localPosition.z);break;case "Down":transform.localPosition = new Vector3(transform.localPosition.x, -transform.localPosition.y-30, transform.localPosition.z);break;case "Left":transform.localPosition = new Vector3(-transform.localPosition.x+180, transform.localPosition.y, transform.localPosition.z);//因为左右不对称，这样加180才能从右边边缘出来break;case "Right":transform.localPosition = new Vector3(-transform.localPosition.x + 240, transform.localPosition.y, transform.localPosition.z);break;}Debug.Log("Die");}}
}05-奖励目标的生成与获取
在Canvas下新建Image更名为Reward并拖入到Prefabs文件夹下。修改其Tag值为Reward
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
public class FoodMaker : MonoBehaviour
{private static FoodMaker _instance;public static FoodMaker Instance{get{return _instance;}}public int xlimit=21;public int ylimit = 11;public int xoffset = 7;public GameObject foodPrefab;public Sprite[] foodSprites;private Transform foodHolder;public GameObject rewardPrefab;private void Awake(){_instance = this;}private void Start(){foodHolder = GameObject.Find("FoodHolder").transform;MakeFood(false);}/// <summary>/// 生成食物/// </summary>public void MakeFood(bool isReward){int index = Random.Range(0,foodSprites.Length);GameObject food = Instantiate(foodPrefab);food.GetComponent<Image>().sprite = foodSprites[index];food.transform.SetParent(foodHolder,false);//false是否保持世界坐标，不转换坐标int x = Random.Range(-xlimit+xoffset,xlimit);int y = Random.Range(-ylimit,ylimit);food.transform.localPosition = new Vector3(x*30,y*30,0);if (isReward){GameObject reward = Instantiate(rewardPrefab);reward.transform.SetParent(foodHolder, false);//false是否保持世界坐标，不转换坐标x = Random.Range(-xlimit + xoffset, xlimit);y = Random.Range(-ylimit, ylimit);reward.transform.localPosition = new Vector3(x * 30, y * 30, 0);}}
}
using System.Collections;
using System.Collections.Generic;
//using System.Linq;
using UnityEngine;
using UnityEngine.UI;
public class SnakeHead : MonoBehaviour
{public List<Transform> bodyList = new List<Transform>();//存储身体的位置public float velocity=0.35f;//每隔多久要调用，实际就相当于速度public int step;//小蛇每一步要走的路private int x;//x和Y都是移动的增量private int y;private Vector3 HeadPos;//记录头的位置private Transform canvas;public GameObject bodyPrefab;//蛇身预制体public Sprite[] bodySprites = new Sprite[2];private void Awake(){canvas = GameObject.Find("Canvas").transform;}void Start(){InvokeRepeating("Move",0,velocity);x = 0;//刚开始的时候，贪吃蛇就会往上走y =step;}void Update(){if (Input.GetKeyDown(KeyCode.Space))//CancelInvoke()取消当前的Invoke{CancelInvoke();InvokeRepeating("Move", 0, velocity-0.2f);//跑快}if (Input.GetKeyUp(KeyCode.Space)){CancelInvoke();InvokeRepeating("Move", 0, velocity);//减速就是回到正常速度}if (Input.GetKey(KeyCode.W)&&y!=-step)//y!=-step加这句是蛇头向下的时候不是直接向下的{gameObject.transform.localRotation = Quaternion.Euler(0,0,0);//将Float值转换成四元数x = 0;y = step;}if (Input.GetKey(KeyCode.S)&&y != step){gameObject.transform.localRotation = Quaternion.Euler(0, 0, 180);//将Float值转换成四元数x = 0;y = -step;}if (Input.GetKey(KeyCode.A) && x != step){gameObject.transform.localRotation = Quaternion.Euler(0, 0, 90);//将Float值转换成四元数x = -step;y = 0;}if (Input.GetKey(KeyCode.D) && x != -step){gameObject.transform.localRotation = Quaternion.Euler(0, 0, -90);//将Float值转换成四元数x = step;y = 0;}}/// <summary>/// 头部的移动/// </summary>void Move(){HeadPos = gameObject.transform.localPosition;//保存下来蛇头移动前的位置gameObject.transform.localPosition = new Vector3(HeadPos.x + x,HeadPos.y+y,HeadPos.z);//蛇头向期望位置移动//Grow();//如果放在这里还来不及显示，就被下面的代码排了位置，但是要列出标识位，管一下开关if (bodyList.Count > 0){//由于我们是双色蛇身，此方法弃用//bodyList.Last().localPosition = HeadPos;//直接返回最后一个元素//将蛇尾移动到蛇头移动前的位置//bodyList.Insert(0, bodyList.Last());//将蛇尾在List中的位置更新到最前//bodyList.RemoveAt(bodyList.Count - 1);//移除List最末尾的蛇尾引用//由于我们是双色蛇身，使用此方法达到显示目的for (int i = bodyList.Count-2; i>=0; i--)//是从后往前开始移动的蛇身 i = bodyList.Count-2{bodyList[i + 1].localPosition = bodyList[i].localPosition;//每一个蛇身都移动到他前面一个节点的位置}bodyList[0].localPosition = HeadPos;//第一个蛇身移动到蛇头移动前的位置}}/// <summary>/// 生成蛇身/// </summary>void Grow(){int index=(bodyList.Count%2==0)?0:1;GameObject body = Instantiate(bodyPrefab,new Vector3(2000,2000,0),Quaternion.identity);//new Vector3(2000,2000,0)生成的时候放在看不到的位置，这样就不会显示在中间了body.GetComponent<Image>().sprite = bodySprites[index];body.transform.SetParent(canvas,false);bodyList.Add(body.transform);}private void OnTriggerEnter2D(Collider2D collision){//食物 if (collision.gameObject.CompareTag("Food"))//也可以写成collision.tag == "Food"{Destroy(collision.gameObject);Grow();//吃了食物之后立马调用FoodMaker.Instance.MakeFood((Random.Range(0, 100) < 20) ? true : false);}else if (collision.gameObject.CompareTag("Reward")){Destroy(collision.gameObject);Grow();}else if (collision.gameObject.CompareTag("Body")){Debug.Log("Die");}else{switch (collision.gameObject.name){case "Up":transform.localPosition = new Vector3(transform.localPosition.x, -transform.localPosition.y + 30, transform.localPosition.z);break;case "Down":transform.localPosition = new Vector3(transform.localPosition.x, -transform.localPosition.y - 30, transform.localPosition.z);break;case "Left":transform.localPosition = new Vector3(-transform.localPosition.x + 180, transform.localPosition.y, transform.localPosition.z);//因为左右不对称，这样加180才能从右边边缘出来break;case "Right":transform.localPosition = new Vector3(-transform.localPosition.x + 240, transform.localPosition.y, transform.localPosition.z);break;}Debug.Log("Die");}}
}
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