【用unity实现100个游戏之8】用Unity制作一个炸弹人游戏

前言

我们将在这个视频中，学习如何在Unity中制作《炸弹人心》，《炸弹人》是—个游戏系列，最初于1983年7月在日本发行，《炸弹人》的游戏玩法包括策略性地放炸弹，在一定时间后以多个方向爆炸，以摧毁障碍物和杀死敌人。

本文重点介绍了实现瓦片地图精灵动画的方法，你可以用许多不同的方式自定义游戏，
想出独特的游戏模式并建立自己的关卡。

先来看看实现的最终效果

素材

开始

一、绘制地图

使用tilemap绘制地图，其实挺简单的，这里我就不再介绍如何使用了，节省大家时间，tilemap还不会用的，可以看我之前的tilemap文章：【Unity小技巧】Unity2D TileMap的探究（最简单，最全面的TileMap使用介绍）

绘制的最终效果，你也可以按自己的喜欢绘制不同的地图

二、玩家设置

给玩家添加刚体和碰撞器，重力设置为0，注意添加圆形的碰撞器，这样可以有效防止角色转弯时卡在墙角

新建2d物理材质，设置角摩擦力和弹力为0，防止角色卡墙

刚体和碰撞器都挂载刚才的2d物理材质

三、玩家移动

Player代码

public class Player : MonoBehaviour
{Rigidbody2D rb;Vector2 movement;private float horizontalInput;private float verticalInput;public float speed;//移动速度private void Start(){rb = GetComponent<Rigidbody2D>();}void Update(){        horizontalInput = Input.GetAxisRaw("Horizontal");verticalInput = Input.GetAxisRaw("Vertical");movement = new Vector2(horizontalInput, verticalInput).normalized;}private void FixedUpdate(){//移动代码rb.MovePosition(rb.position + movement * speed * Time.fixedDeltaTime);}
}

运行效果

四、玩家四方向动画运动切换

这里我们使用2D混合动画实现（2D Simple Directional），混合动画的基础使用我之前有说过，不懂得可以回去先看：
零基础带你从小白到超神27——混合状态，混合动画，动画分类
Run混合动画配置（down动画片段是默认人物站立面向观众）

修改人物移动代码

//控制动画
animator.SetFloat("Horizontal", horizontalInput);
animator.SetFloat("Vertical", verticalInput);

运行效果

问题
如果你的游戏对细节要求不高，其实到这里就已经算完成了。
但是我本着严谨的态度，会发现人物移动停止时都会面向屏幕（也就是前面的down站立动画），这显然不符合逻辑，我们希望人物最终停止面向对应的位置

那么要如何做呢？方法其实有很多，最简单的方法呢，就是在Run混合动画前面再加一个Idle混合动画
我们通过isRun参数来控制动画的切换

Run混合动画配置（所有动画片段都是人物不同方向的站立动画）

修改代码

//控制动画
if (horizontalInput == 0 && verticalInput == 0){animator.SetBool("isRun", false);
} else {animator.SetBool("isRun", true);animator.SetFloat("Horizontal", horizontalInput);animator.SetFloat("Vertical", verticalInput);
}

效果

五、放置炸弹

炸弹控制脚本

using System.Collections;
using UnityEngine;public class Bomb : MonoBehaviour
{[Header("Bomb")]private KeyCode inputKey = KeyCode.Space;  // 输入的按键public GameObject bombPrefab;  // 炸弹预制体public float bombFuseTime = 3f;  // 炸弹引线时间public int bombAmount = 1;  // 炸弹数量private int bombsRemaining;  // 剩余炸弹数量private void OnEnable(){bombsRemaining = bombAmount;  // 初始化剩余炸弹数量}private void Update(){if (bombsRemaining > 0 && Input.GetKeyDown(inputKey))  // 如果还有剩余炸弹且按下了指定按键{StartCoroutine(PlaceBomb());  // 放置炸弹}}private IEnumerator PlaceBomb(){Vector2 position = transform.position;  // 获取当前位置position.x = Mathf.Round(position.x)-0.5f;  // 四舍五入x坐标-0.5偏移量position.y = Mathf.Round(position.y)-0.5f;  // 四舍五入y坐标-0.5偏移量GameObject bomb = Instantiate(bombPrefab, position, Quaternion.identity);  // 实例化炸弹bombsRemaining--;  // 剩余炸弹数量减一yield return new WaitForSeconds(bombFuseTime);  // 等待炸弹引线时间Destroy(bomb.gameObject);  // 销毁炸弹游戏对象bombsRemaining++;  // 剩余炸弹数量加一}//炸弹默认是触发器 角色离开时开启碰撞效果private void OnTriggerExit2D(Collider2D other){if (other.gameObject.layer == LayerMask.NameToLayer("Bomb"))  // 如果离开触发器的物体属于Bomb层{other.isTrigger = false;  // 取消触发器属性}}
}

角色绑定脚本，配置参数，记得Bomb预制体开启触发器，并指定图层为Bomb

运行效果

六、生成爆炸效果

新增爆炸效果代码

[Header("爆炸")]
public GameObject explosionEnd; // 爆炸结束
public GameObject explosionMiddle; // 爆炸中间
public GameObject explosionStart; // 爆炸结束
public int explosionRange;//爆炸范围//生成爆炸效果
public void createExplosion(Vector2 position)
{//爆炸中心GameObject explosionStartData = Instantiate(explosionStart, position, Quaternion.identity);Destroy(explosionStartData, 0.5f);for (int i = 1; i <= explosionRange; i++){ClearDestructible(new Vector2(position.x + i, position.y), i, 0);ClearDestructible(new Vector2(position.x - i, position.y), i, 180);ClearDestructible(new Vector2(position.x, position.y + i), i, 90);ClearDestructible(new Vector2(position.x, position.y -i), i, -90);}
}private bool ClearDestructible(Vector2 position, int i, int rotate)
{//是不是最后爆炸区if (i == explosionRange){GameObject explosionEndData = Instantiate(explosionEnd, position, Quaternion.identity);//设置爆炸效果的方向explosionEndData.transform.eulerAngles = new Vector3(0, 0, rotate);Destroy(explosionEndData, 0.5f);}else{GameObject explosionMiddleData = Instantiate(explosionMiddle, position, Quaternion.identity);//设置爆炸效果的方向explosionMiddleData.transform.eulerAngles = new Vector3(0, 0, rotate);Destroy(explosionMiddleData, 0.5f);}return true;
}

效果

七、墙壁和可破坏障碍物的判断

修改代码

[Header("爆炸")]
public Tilemap wallTileMap; // 可破坏物墙壁的Tilemap组件
public GameObject explosionEnd; // 爆炸结束预制体
public GameObject explosionMiddle; // 爆炸中间预制体
public GameObject explosionStart; // 爆炸结束预制体
public GameObject brickWall;//破坏的墙
public int explosionRange;//爆炸范围
public LayerMask explosionLayerMask;  // 墙壁层级//生成爆炸效果
public void createExplosion(Vector2 position)
{//爆炸中心GameObject explosionStartData = Instantiate(explosionStart, position, Quaternion.identity);Destroy(explosionStartData, 0.5f);for (int i = 1; i <= explosionRange; i++){bool res = ClearDestructible(new Vector2(position.x + i, position.y), i, 0);if (!res) break;}for (int i = 1; i <= explosionRange; i++){bool res = ClearDestructible(new Vector2(position.x - i, position.y), i, 180);if (!res) break;}for (int i = 1; i <= explosionRange; i++){bool res = ClearDestructible(new Vector2(position.x, position.y + i), i, 90);if (!res) break;}for (int i = 1; i <= explosionRange; i++){bool res = ClearDestructible(new Vector2(position.x, position.y - i), i, -90);if (!res) break;} 
}private bool ClearDestructible(Vector2 position, int i, int rotate)
{if (Physics2D.OverlapBox(position, new Vector2(0.5f, 0.5f), 0f, explosionLayerMask))  // 如果爆炸位置有墙壁{return false;}Vector3Int cell = wallTileMap.WorldToCell(position);  // 将世界坐标转换为Tilemap的单元格坐标TileBase tile = wallTileMap.GetTile(cell);  // 获取指定单元格的Tileif (tile != null)  // 如果爆炸位置有可破坏障碍物{wallTileMap.SetTile(cell, null);  // 清除TileGameObject brickWallData = Instantiate(brickWall, position, Quaternion.identity);  // 实例化可破坏物体Destroy(brickWallData, 0.5f);return false;} else {//是不是最后爆炸区if (i == explosionRange){GameObject explosionEndData = Instantiate(explosionEnd, position, Quaternion.identity);//设置爆炸效果的方向explosionEndData.transform.eulerAngles = new Vector3(0, 0, rotate);Destroy(explosionEndData, 0.5f);} else {GameObject explosionMiddleData = Instantiate(explosionMiddle, position, Quaternion.identity);//设置爆炸效果的方向explosionMiddleData.transform.eulerAngles = new Vector3(0, 0, rotate);Destroy(explosionMiddleData, 0.5f);}return true;}
}

效果，记得先设置和配置好墙壁的层级

八、道具生成和效果

新建破坏的墙脚本

public class BrickWall : MonoBehaviour
{public float destructionTime = 1f;[Range(0f, 1f)]public float itemSpawnChance = 0.2f;//生成道具的概率public GameObject[] spawnableItems;private void Start(){Destroy(gameObject, destructionTime);}//销毁时按比例生成道具private void OnDestroy(){if (spawnableItems.Length > 0 && Random.value < itemSpawnChance){int randomIndex = Random.Range(0, spawnableItems.Length);Instantiate(spawnableItems[randomIndex], transform.position, Quaternion.identity);}}
}

新增道具代码

using UnityEngine;//道具代码
public class Prop : MonoBehaviour
{public enum ItemType{ExtraBomb,BlastRadius,SpeedIncrease,}public ItemType type;private void OnItemPickup(GameObject player){switch (type){case ItemType.ExtraBomb:player.GetComponent<Bomb>().bombAmount++;  // 炸弹数量加一player.GetComponent<Bomb>().bombsRemaining++;  // 剩余炸弹数量加一break;case ItemType.BlastRadius:player.GetComponent<Bomb>().explosionRange++;//爆炸范围增加break;case ItemType.SpeedIncrease:player.GetComponent<Player>().speed++;//移动速度增加break;}Destroy(gameObject);}private void OnTriggerEnter2D(Collider2D other){if (other.CompareTag("Player")) {OnItemPickup(other.gameObject);}}
}

挂载脚本和配置好道具参数，这里为了测试方便我就把生成道具的概率先设置为1

效果

九、玩家死亡

角色添加代码

//检测碰撞 玩家死亡
private void OnTriggerEnter2D(Collider2D other)
{if (other.gameObject.layer == LayerMask.NameToLayer("Explosion")) {animator.SetTrigger("isDeath");//播放死亡动画//TODO:结束游戏}
}

效果

十、简单的敌人AI

实现敌人碰壁随机往其他可移动的方向移动

using System.Collections;
using System.Collections.Generic;
using UnityEngine;public class EnemyAI : MonoBehaviour
{private float speed = 0.05f;private Rigidbody2D rig;private SpriteRenderer spriteRenderer;private Color color;/// <summary>/// 方向：0上 1下 2左 3右/// </summary>private int dirId = 0;private Vector2 dirVector;private float rayDistance = 0.7f;private float x;private float y;private void Awake(){Physics2D.queriesStartInColliders = false;spriteRenderer = GetComponent<SpriteRenderer>();color = spriteRenderer.color;rig = GetComponent<Rigidbody2D>();InitDir(Random.Range(0, 4));}private void Update(){//移动rig.MovePosition(rig.position + dirVector * speed);}private void InitDir(int dir){Debug.Log(dir);dirId = dir;switch (dirId){case 0:dirVector = Vector2.up;//控制偏移量x = Mathf.Round(rig.position.x) < rig.position.x ? Mathf.Round(rig.position.x) + 0.5f : Mathf.Round(rig.position.x) - 0.5f;transform.position = new Vector2(x, transform.position.y);break;case 1:dirVector = Vector2.down;x = Mathf.Round(rig.position.x) < rig.position.x ? Mathf.Round(rig.position.x) + 0.5f : Mathf.Round(rig.position.x) - 0.5f;transform.position = new Vector2(x, transform.position.y);break;case 2:dirVector = Vector2.left;y = Mathf.Round(rig.position.y) < rig.position.y ? Mathf.Round(rig.position.y) + 0.5f : Mathf.Round(rig.position.y) - 0.5f;transform.position = new Vector2(transform.position.x, y);break;case 3:dirVector = Vector2.right;y = Mathf.Round(rig.position.y) < rig.position.y ? Mathf.Round(rig.position.y) + 0.5f : Mathf.Round(rig.position.y) - 0.5f;transform.position = new Vector2(transform.position.x, y);break;default:break;}}private void ChangeDir(){List<int> dirList = new List<int>();if (Physics2D.Raycast(transform.position, Vector2.up, rayDistance).collider == null){dirList.Add(0);}if (Physics2D.Raycast(transform.position, Vector2.down, rayDistance).collider == null){dirList.Add(1);}if (Physics2D.Raycast(transform.position, Vector2.left, rayDistance).collider == null){dirList.Add(2);}if (Physics2D.Raycast(transform.position, Vector2.right, rayDistance).collider == null){dirList.Add(3);}if (dirList.Count > 0){int index = Random.Range(0, dirList.Count);InitDir(dirList[index]);}}//画辅助线private void OnDrawGizmos(){Gizmos.color = Color.red;Gizmos.DrawLine(transform.position, transform.position + new Vector3(0, rayDistance, 0));Gizmos.color = Color.blue;Gizmos.DrawLine(transform.position, transform.position + new Vector3(0, -rayDistance, 0));Gizmos.DrawLine(transform.position, transform.position + new Vector3(-rayDistance, 0, 0));Gizmos.DrawLine(transform.position, transform.position + new Vector3(rayDistance, 0, 0));}//碰撞检测private void OnCollisionEnter2D(Collision2D collision){//碰到层级if (collision.gameObject.layer == LayerMask.NameToLayer("Wall") || collision.gameObject.layer == LayerMask.NameToLayer("BrickWall") || collision.gameObject.layer == LayerMask.NameToLayer("Bomb")){ChangeDir();}}//检测敌人死亡private void OnTriggerEnter2D(Collider2D other){if (other.gameObject.layer == LayerMask.NameToLayer("Explosion")){Destroy(gameObject);}}
}

效果

十一、简单敌人AI

实现敌人随机移动

using System.Collections;
using System.Collections.Generic;
using UnityEngine;public class EnemyAI : MonoBehaviour
{private float speed = 0.05f;private Rigidbody2D rig;private SpriteRenderer spriteRenderer;private Color color;/// <summary>/// 方向：0上 1下 2左 3右/// </summary>private int dirId = 0;private Vector2 dirVector;private float rayDistance = 0.7f;private float x;private float y;private void Awake(){Physics2D.queriesStartInColliders = false;spriteRenderer = GetComponent<SpriteRenderer>();color = spriteRenderer.color;rig = GetComponent<Rigidbody2D>();InitDir(Random.Range(0, 4));}private void Update(){if (GameApp.instance.enemyMove){//移动rig.MovePosition(rig.position + dirVector * speed);}}private void InitDir(int dir){dirId = dir;switch (dirId){case 0:dirVector = Vector2.up;//控制偏移量x = Mathf.Round(rig.position.x) < rig.position.x ? Mathf.Round(rig.position.x) + 0.5f : Mathf.Round(rig.position.x) - 0.5f;transform.position = new Vector2(x, transform.position.y);break;case 1:dirVector = Vector2.down;x = Mathf.Round(rig.position.x) < rig.position.x ? Mathf.Round(rig.position.x) + 0.5f : Mathf.Round(rig.position.x) - 0.5f;transform.position = new Vector2(x, transform.position.y);break;case 2:dirVector = Vector2.left;y = Mathf.Round(rig.position.y) < rig.position.y ? Mathf.Round(rig.position.y) + 0.5f : Mathf.Round(rig.position.y) - 0.5f;transform.position = new Vector2(transform.position.x, y);break;case 3:dirVector = Vector2.right;y = Mathf.Round(rig.position.y) < rig.position.y ? Mathf.Round(rig.position.y) + 0.5f : Mathf.Round(rig.position.y) - 0.5f;transform.position = new Vector2(transform.position.x, y);break;default:break;}}private void ChangeDir(){List<int> dirList = new List<int>();if (Physics2D.Raycast(transform.position, Vector2.up, rayDistance).collider == null){dirList.Add(0);}if (Physics2D.Raycast(transform.position, Vector2.down, rayDistance).collider == null){dirList.Add(1);}if (Physics2D.Raycast(transform.position, Vector2.left, rayDistance).collider == null){dirList.Add(2);}if (Physics2D.Raycast(transform.position, Vector2.right, rayDistance).collider == null){dirList.Add(3);}if (dirList.Count > 0){int index = Random.Range(0, dirList.Count);InitDir(dirList[index]);}}//画辅助线private void OnDrawGizmos(){Gizmos.color = Color.red;Gizmos.DrawLine(transform.position, transform.position + new Vector3(0, rayDistance, 0));Gizmos.color = Color.blue;Gizmos.DrawLine(transform.position, transform.position + new Vector3(0, -rayDistance, 0));Gizmos.DrawLine(transform.position, transform.position + new Vector3(-rayDistance, 0, 0));Gizmos.DrawLine(transform.position, transform.position + new Vector3(rayDistance, 0, 0));}//碰撞检测private void OnCollisionEnter2D(Collision2D collision){//碰到层级if (collision.gameObject.layer == LayerMask.NameToLayer("Wall") || collision.gameObject.layer == LayerMask.NameToLayer("BrickWall") || collision.gameObject.layer == LayerMask.NameToLayer("Bomb")){ChangeDir();}}//检测敌人死亡private void OnTriggerEnter2D(Collider2D other){//碰到炸弹层级，换方向if (other.gameObject.layer == LayerMask.NameToLayer("Bomb")){ChangeDir();}if (other.gameObject.layer == LayerMask.NameToLayer("Explosion")){GameApp.instance.deathEnemyCount++;GameApp.instance.score++;Destroy(gameObject);}}
}

效果

十二、随机绘制地图

using System.Globalization;
using Unity.VisualScripting;
using UnityEngine;
using UnityEngine.Tilemaps;
using UnityEngine.UIElements;
using System.Collections.Generic;
using System.Collections;
//随机生成可破坏瓦片
public class MapController : MonoBehaviour
{public static MapController instance;[Range(0f, 1f)]public float itemSpawnChance = 0.2f;//生成瓦片的概率public Tilemap map;// 瓦片资源基类通过它可以得到瓦片资源public TileBase tileBase;private List<Vector3> emptyPosition;//保存所有的空位private List<Vector3> wallPosition;//保存所有的可破坏墙的位置public GameObject enemy;//怪物预制体public GameObject door;//门预制体public GameObject playerData;//主角预制体private int mapWidth;private int mapHeight;private void Awake(){if (instance == null){instance = this;}else{if (instance != this){Destroy(gameObject);}}DontDestroyOnLoad(gameObject);emptyPosition = new List<Vector3>();wallPosition = new List<Vector3>();mapWidth = 16;mapHeight = 8;}public void Init(){// 1.清空瓦片地图map.ClearAllTiles();for (int i = 0; i <= mapWidth; i++){for (int j = 0; j <= mapHeight; j++){//跳过砖块if (i % 2 != 0 && j % 2 != 0){continue;}Vector3 position = new Vector3(-7.5f + i, 3.5f - j, 0);Vector3Int cell = map.WorldToCell(position);  // 将世界坐标转换为Tilemap的单元格坐标if (Random.value < itemSpawnChance){map.SetTile(cell, tileBase); // 设置wallPosition.Add(position);}else{emptyPosition.Add(position);}}}addPlayer();addEnemy();addDoor();//清空地图的炸弹GameObject[] res = GameObject.FindGameObjectsWithTag("Bomb");foreach (GameObject item in res){Destroy(item);}//清空地图的道具res = GameObject.FindGameObjectsWithTag("Props");foreach (GameObject item in res){Destroy(item);}}//生成主角private void addPlayer(){GameObject res = GameObject.Find("Player(Clone)");if (res != null){Destroy(res);}GameObject player = Instantiate(playerData);//生成在左下角player.transform.position = new Vector2(-7.5f, -4.5f);//去除相邻的mapmap.SetTile(map.WorldToCell(new Vector2(-7.5f, -4.5f)), null);map.SetTile(map.WorldToCell(new Vector2(-6.5f, -4.5f)), null);map.SetTile(map.WorldToCell(new Vector2(-7.5f, -3.5f)), null);emptyPosition.Remove(new Vector3(-7.5f, -4.5f, 0));emptyPosition.Remove(new Vector3(-6.5f, -4.5f, 0));emptyPosition.Remove(new Vector3(-7.5f, -3.5f, 0));}//生成怪物private void addEnemy(){//清空地图上的所有敌人GameObject[] res = GameObject.FindGameObjectsWithTag("Enemy");foreach (GameObject item in res){Destroy(item);}if (emptyPosition.Count > 0){for (int i = 0; i < GameApp.instance.enemyCount; i++){int index = Random.Range(0, emptyPosition.Count);Instantiate(enemy, emptyPosition[index], Quaternion.identity);}}}
}

效果，每次进来地图都不一样

十三、虚拟摇杆

引入虚拟摇杆，实现玩家移动，不懂的可以看我这篇文章：3种实现虚拟移动摇杆控制人物移动的方法

效果

最终效果

待续

后面还准备了一些内容，有空再补充，包括音频管理器、随机生成地图和敌人、通关门效果、主角生命值，游戏开始和结束UI界面，关卡选择界面、保存主角属性到下一关、更多的敌人（可能加入boss）、优化代码架构、完善虚拟摇杆、发布游戏到微信小游戏

源码

后面整理好我会放上来

完结

赠人玫瑰，手有余香！如果文章内容对你有所帮助，请不要吝啬你的点赞评论和关注，以便我第一时间收到反馈，你的每一次支持都是我不断创作的最大动力。当然如果你发现了文章中存在错误或者有更好的解决方法，也欢迎评论私信告诉我哦！

好了，我是向宇，https://xiangyu.blog.csdn.net

一位在小公司默默奋斗的开发者，出于兴趣爱好，于是最近才开始自习unity。如果你遇到任何问题，也欢迎你评论私信找我， 虽然有些问题我可能也不一定会，但是我会查阅各方资料，争取给出最好的建议，希望可以帮助更多想学编程的人，共勉~