使用unity怎么实现一个贪吃蛇游戏？相信很多没有经验的人对此束手无策，为此本文总结了问题出现的原因和解决方法，通过这篇文章希望你能解决这个问题。
具体内容如下
using UnityEngine;using UnityEngine.UI;public class StartUIController : MonoBehaviour{ public Text lastText; public Text bestText; public Toggle blue; public Toggle yellow; public Toggle border; public Toggle noBorder; void Awake() { lastText.text = "上次：长度" + PlayerPrefs.GetInt("lastl", 0) + "，分数" + PlayerPrefs.GetInt("lasts", 0); bestText.text = "最好：长度" + PlayerPrefs.GetInt("bestl", 0) + "，分数" + PlayerPrefs.GetInt("bests", 0); } void Start() { if (PlayerPrefs.GetString("sh", "sh01") == "sh01") { blue.isOn = true; PlayerPrefs.SetString("sh", "sh01"); PlayerPrefs.SetString("sb01", "sb0101"); PlayerPrefs.SetString("sb02", "sb0102"); } else { yellow.isOn = true; PlayerPrefs.SetString("sh", "sh02"); PlayerPrefs.SetString("sb01", "sb0201"); PlayerPrefs.SetString("sb02", "sb0202"); } if (PlayerPrefs.GetInt("border", 1) == 1) { border.isOn = true; PlayerPrefs.SetInt("border", 1); } else { noBorder.isOn = true; PlayerPrefs.SetInt("border", 0); } } public void BlueSelected(bool isOn) { if (isOn) { PlayerPrefs.SetString("sh", "sh01"); PlayerPrefs.SetString("sb01", "sb0101"); PlayerPrefs.SetString("sb02", "sb0102"); } } public void YellowSelected(bool isOn) { if (isOn) { PlayerPrefs.SetString("sh", "sh02"); PlayerPrefs.SetString("sb01", "sb0201"); PlayerPrefs.SetString("sb02", "sb0202"); } } public void BorderSelected(bool isOn) { if (isOn) { PlayerPrefs.SetInt("border", 1); } } public void NoBorderSelected(bool isOn) { if (isOn) { PlayerPrefs.SetInt("border", 0); } } public void StartGame() { UnityEngine.SceneManagement.SceneManager.LoadScene(1); }}SnakeHead代码
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>(); public float velocity = 0.35f; public int step; private int x; private int y; private Vector3 headPos; private Transform canvas; private bool isDie = false; public AudioClip eatClip; public AudioClip dieClip; public GameObject dieEffect; public GameObject bodyPrefab; public Sprite[] bodySprites = new Sprite[2]; void Awake() { canvas = GameObject.Find("Canvas").transform; //通过Resources.Load(string path)方法加载资源，path的书写不需要加Resources/以及文件扩展名 gameObject.GetComponent<Image>().sprite = Resources.Load<Sprite>(PlayerPrefs.GetString("sh", "sh02")); bodySprites[0] = Resources.Load<Sprite>(PlayerPrefs.GetString("sb01", "sb0201")); bodySprites[1] = Resources.Load<Sprite>(PlayerPrefs.GetString("sb02", "sb0202")); } void Start() { InvokeRepeating("Move", 0, velocity); x = 0;y = step; } void Update() { if (Input.GetKeyDown(KeyCode.Space) && MainUIController.Instance.isPause == false && isDie == false) { CancelInvoke(); InvokeRepeating("Move", 0, velocity - 0.2f); } if (Input.GetKeyUp(KeyCode.Space) && MainUIController.Instance.isPause == false && isDie == false) { CancelInvoke(); InvokeRepeating("Move", 0, velocity); } if (Input.GetKey(KeyCode.W) && y != -step && MainUIController.Instance.isPause == false && isDie == false) { gameObject.transform.localRotation = Quaternion.Euler(0, 0, 0); x = 0;y = step; } if (Input.GetKey(KeyCode.S) && y != step && MainUIController.Instance.isPause == false && isDie == false) { gameObject.transform.localRotation = Quaternion.Euler(0, 0, 180); x = 0; y = -step; } if (Input.GetKey(KeyCode.A) && x != step && MainUIController.Instance.isPause == false && isDie == false) { gameObject.transform.localRotation = Quaternion.Euler(0, 0, 90); x = -step; y = 0; } if (Input.GetKey(KeyCode.D) && x != -step && MainUIController.Instance.isPause == false && isDie == false) { gameObject.transform.localRotation = Quaternion.Euler(0, 0, -90); x = step; y = 0; } } 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 if (bodyList.Count > 0) { //由于我们是双色蛇身，此方法弃用 //bodyList.Last().localPosition = headPos; //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--) //从后往前开始移动蛇身 { bodyList[i + 1].localPosition = bodyList[i].localPosition; //每一个蛇身都移动到它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 } } void Grow() { AudioSource.PlayClipAtPoint(eatClip, Vector3.zero); int index = (bodyList.Count % 2 == 0) ? 0 : 1; GameObject body = Instantiate(bodyPrefab, new Vector3(2000, 2000, 0), Quaternion.identity); body.GetComponent<Image>().sprite = bodySprites[index]; body.transform.SetParent(canvas, false); bodyList.Add(body.transform); } void Die() { AudioSource.PlayClipAtPoint(dieClip, Vector3.zero); CancelInvoke(); isDie = true; Instantiate(dieEffect); PlayerPrefs.SetInt("lastl", MainUIController.Instance.length); PlayerPrefs.SetInt("lasts", MainUIController.Instance.score); if (PlayerPrefs.GetInt("bests", 0) < MainUIController.Instance.score) { PlayerPrefs.SetInt("bestl", MainUIController.Instance.length); PlayerPrefs.SetInt("bests", MainUIController.Instance.score); } StartCoroutine(GameOver(1.5f)); } IEnumerator GameOver(float t) { yield return new WaitForSeconds(t); UnityEngine.SceneManagement.SceneManager.LoadScene(1); } private void OnTriggerEnter2D(Collider2D collision) { if (collision.gameObject.CompareTag("Food")) { Destroy(collision.gameObject); MainUIController.Instance.UpdateUI(); Grow(); FoodMaker.Instance.MakeFood((Random.Range(0, 100) < 20) ? true : false); } else if (collision.gameObject.CompareTag("Reward")) { Destroy(collision.gameObject); MainUIController.Instance.UpdateUI(Random.Range(5, 15) * 10); Grow(); } else if (collision.gameObject.CompareTag("Body")) { Die(); } else { if (MainUIController.Instance.hasBorder) { 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); break; case "Right": transform.localPosition = new Vector3(-transform.localPosition.x + 240, transform.localPosition.y, transform.localPosition.z); break; } } } }}MainUIController
using UnityEngine;using UnityEngine.UI;public class MainUIController : MonoBehaviour{ private static MainUIController _instance; public static MainUIController Instance { get { return _instance; } } public bool hasBorder = true; public bool isPause = false; public int score = 0; public int length = 0; public Text msgText; public Text scoreText; public Text lengthText; public Image pauseImage; public Sprite[] pauseSprites; public Image bgImage; private Color tempColor; void Awake() { _instance = this; } void Start() { if (PlayerPrefs.GetInt("border", 1) == 0) { hasBorder = false; foreach (Transform t in bgImage.gameObject.transform) { t.gameObject.GetComponent<Image>().enabled = false; } } } void Update() { switch (score / 100) { case 0: case 1: case 2: break; case 3: case 4: ColorUtility.TryParseHtmlString("#CCEEFFFF", out tempColor); bgImage.color = tempColor; msgText.text = "阶段" + 2; break; case 5: case 6: ColorUtility.TryParseHtmlString("#CCFFDBFF", out tempColor); bgImage.color = tempColor; msgText.text = "阶段" + 3; break; case 7: case 8: ColorUtility.TryParseHtmlString("#EBFFCCFF", out tempColor); bgImage.color = tempColor; msgText.text = "阶段" + 4; break; case 9: case 10: ColorUtility.TryParseHtmlString("#FFF3CCFF", out tempColor); bgImage.color = tempColor; msgText.text = "阶段" + 5; break; default: ColorUtility.TryParseHtmlString("#FFDACCFF", out tempColor); bgImage.color = tempColor; msgText.text = "无尽阶段"; break; } } public void UpdateUI(int s = 5, int l = 1) { score += s; length += l; scoreText.text = "得分:\n" + score; lengthText.text = "长度:\n" + length; } public void Pause() { isPause = !isPause; if (isPause) { Time.timeScale = 0; pauseImage.sprite = pauseSprites[1]; } else { Time.timeScale = 1; pauseImage.sprite = pauseSprites[0]; } } public void Home() { UnityEngine.SceneManagement.SceneManager.LoadScene(0); }}FoodMaker代码
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 GameObject rewardPrefab; public Sprite[] foodSprites; private Transform foodHolder; void Awake() { _instance = this; } void Start() { foodHolder = GameObject.Find("FoodHolder").transform; MakeFood(false); } 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); 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); x = Random.Range(-xlimit + xoffset, xlimit); y = Random.Range(-ylimit, ylimit); reward.transform.localPosition = new Vector3(x * 30, y * 30, 0); } }}看完上述内容，你们掌握使用unity怎么实现一个贪吃蛇游戏的方法了吗？如果还想学到更多技能或想了解更多相关内容，欢迎关注编程网行业资讯频道，感谢各位的阅读！
