Java 实现一个坦克大战的小游戏【附源码】

作者：JavaPub

2022 年 5 月 30 日
本文字数：2562 字
阅读完需：约 8 分钟

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@[toc]

1 前言

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2 正文

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2.1 展示预览

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2.2 项目结构

2.2 主要代码展示


var Bullet = function(context,owner,type,dir){  this.ctx = context;  this.x = 0;  this.y = 0;  this.owner = owner; //子弹的所属者  this.type = type;//1、玩家  2、敌方  this.dir = dir;  this.speed = 3;  this.size = 6;  this.hit = false;  this.isDestroyed = false;    this.draw = function(){    this.ctx.drawImage(RESOURCE_IMAGE,POS["bullet"][0]+this.dir*this.size,POS["bullet"][1],this.size,this.size,this.x,this.y,this.size,this.size);    this.move();  };    this.move = function(){    if(this.dir == UP){      this.y -= this.speed;    }else if(this.dir == DOWN){      this.y += this.speed;    }else if(this.dir == RIGHT){      this.x += this.speed;    }else if(this.dir == LEFT){      this.x -= this.speed;    }        this.isHit();  };    /**   * 碰撞检测   */  this.isHit = function(){    if(this.isDestroyed){      return;    }    //临界检测    if(this.x < map.offsetX){      this.x = map.offsetX;      this.hit = true;    }else if(this.x > map.offsetX + map.mapWidth - this.size){      this.x = map.offsetX + map.mapWidth - this.size;      this.hit = true;    }    if(this.y < map.offsetY){      this.y = map.offsetY;      this.hit = true;    }else if(this.y > map.offsetY + map.mapHeight - this.size){      this.y = map.offsetY + map.mapHeight - this.size;      this.hit = true;    }    //子弹是否碰撞了其他子弹    if(!this.hit){      if(bulletArray != null && bulletArray.length > 0){        for(var i=0;i<bulletArray.length;i++){          if(bulletArray[i] != this && this.owner.isAI != bulletArray[i].owner.isAI && bulletArray[i].hit == false && CheckIntersect(bulletArray[i],this,0)){            this.hit = true;            bulletArray[i].hit = true;            break;          }        }      }    }        if(!this.hit){      //地图检测      if(bulletMapCollision(this,map)){        this.hit = true;      }      //是否击中坦克      if(this.type == BULLET_TYPE_PLAYER){        if(enemyArray != null || enemyArray.length > 0){          for(var i=0;i<enemyArray.length;i++){            var enemyObj = enemyArray[i];            if(!enemyObj.isDestroyed && CheckIntersect(this,enemyObj,0)){              CheckIntersect(this,enemyObj,0);              if(enemyObj.lives > 1){                enemyObj.lives --;              }else{                enemyObj.distroy();              }              this.hit = true;              break;            }          }        }      }else if(this.type == BULLET_TYPE_ENEMY){        if(player1.lives > 0 && CheckIntersect(this,player1,0)){          if(!player1.isProtected && !player1.isDestroyed){            player1.distroy();          }          this.hit = true;        }else if(player2.lives > 0 && CheckIntersect(this,player2,0)){          if(!player2.isProtected && !player2.isDestroyed){            player2.distroy();          }          this.hit = true;        }      }    }            if(this.hit){      this.distroy();    }  };    /**   * 销毁   */  this.distroy = function(){    this.isDestroyed = true;    crackArray.push(new CrackAnimation(CRACK_TYPE_BULLET,this.ctx,this));    if(!this.owner.isAI){      BULLET_DESTROY_AUDIO.play();    }  };    };

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2.3 按钮操作


var CrackAnimation = function(type,context,crackObj){  this.times = 0;  this.ctx = context;  this.frame = 0;  this.x = 0;  this.y = 0;  this.posName = "";  this.size = 0;  this.isOver = false;  this.tempDir = 1;  this.owner = crackObj;    if(type == CRACK_TYPE_TANK){    this.posName = "tankBomb";    this.size = 66;    this.frame = 4;  }else{    this.posName = "bulletBomb";    this.size = 32;    this.frame = 3;  }  this.x = crackObj.x + (parseInt(crackObj.size - this.size)/2);  this.y = crackObj.y + (parseInt(crackObj.size - this.size)/2);    this.draw = function(){    var gaptime = 3;    var temp = parseInt(this.times/gaptime);    this.ctx.drawImage(RESOURCE_IMAGE,POS[this.posName][0]+temp*this.size,POS[this.posName][1],this.size,this.size,this.x,this.y,this.size,this.size);    this.times += this.tempDir;    if(this.times > this.frame * gaptime - parseInt(gaptime/2)){      this.tempDir = -1;    }    if(this.times <= 0){      this.isOver = true;    }  };};