Tizen-App-Barrage
###概述 Barrage基于web project开发，本篇主要描述Barrage的核心算法。 ###核心算法 根据游戏需求，抽象出三个类，分别是：
- Bullet.js
- Plain.js
- Global.js
####Bullet.js
/**
* 子弹类
* */
function Bullet(belong,x,y,angle,xspeed,yspeed,aspeed,speed){
base(this,LSprite,[]);
var self = this;
//子弹所属
self.belong = belong;
//出现位置
self.x = x;
self.y = y;
//角度
self.angle = angle;
//移动速度
self.speed = speed;
//xy轴速度
self.xspeed = xspeed;
self.yspeed = yspeed;
//旋转角度加成
self.aspeed = aspeed;
//子弹图片
var bitmapdata,bitmap;
bitmapdata = new LBitmapData(imglist["item1"]);
bitmap = new LBitmap(bitmapdata);
self.bitmap = bitmap;
//显示
self.addChild(bitmap);
}
/**
* 循环
* @param 子弹序号
* */
Bullet.prototype.onframe = function (index){
var self = this;
//子弹移动
self.x += self.xspeed;
self.y += self.yspeed;
//子弹角度变更
if(self.aspeed != 0){
self.angle += self.aspeed;
//子弹角度变更后，重新计算xy轴速度
self.xspeed = self.speed*Math.sin(self.angle * Math.PI / 180);
self.yspeed = self.speed*Math.cos(self.angle * Math.PI / 180);
}
//子弹位置检测
if(self.x < 0 || self.x > LGlobal.width || self.y < 0 || self.y > LGlobal.height){
//从屏幕移除
backLayer.removeChild(self);
//从子弹数组移除
barrage.splice(index,1);
}else{
self.hitTest(index);
}
};
子弹碰撞监测
/**
* 子弹碰撞检测
* */
Bullet.prototype.hitTest = function (index){
var self = this;
var disx,disy,sw,ew,obj,i;
if(self.belong == player.belong){
//自机子弹
for(i=0;i < enemys.length;i++){
obj = enemys[i];
sw = self.bitmap.getWidth()/2;
ew = obj.bitmap.getWidth()/2;
disx = self.x+sw - (obj.x + ew);
disy = self.y+self.bitmap.getHeight()/2 - (obj.y + obj.bitmap.getHeight()/2);
//距离检测
if(disx*disx + disy*disy < ew*ew){
obj.hp--;
if(obj.hp == 0){
point += 1;
pointText.text = point;
//从屏幕移除
backLayer.removeChild(obj);
//从敌机数组移除
enemys.splice(i,1);
if(obj.name == "boss"){
gameclear = true;
}
}
//从屏幕移除
backLayer.removeChild(self);
//从子弹数组移除
barrage.splice(index,1);
}
}
}else{
//敌机子弹
obj = player;
sw = self.bitmap.getWidth()/2;
ew = obj.bitmap.getWidth()/2;
disx = self.x+sw - (obj.x + ew);
disy = self.y+self.bitmap.getHeight()/2 - (obj.y + obj.bitmap.getHeight()/2);
//距离检测
if(disx*disx + disy*disy < ew*ew - 10){
obj.hp--;
if(obj.hp <=0){
obj.visible = false;
gameover = true;
}
//从屏幕移除
backLayer.removeChild(self);
//从子弹数组移除
barrage.splice(index,1);
}
}
};
Plain.js
/**
* 飞机类
* */
function Plain(name,belong,x,y,bullets){
base(this,LSprite,[]);
var self = this;
//飞机名称
self.name = name;
//飞机位置
self.x = x;
self.y = y;
//飞机所属
self.belong = belong;
//子弹数组
self.bullets = bullets;
//初始子弹
self.bullet = self.bullets[Math.floor(Math.random()*self.bullets.length)];
self.shootspeed = Global.bulletList[self.bullet].shootspeed;
//枪口旋转角度
self.sspeed = 0;
//射击频率控制
self.shootctrl = 0;
//获取飞机属性
self.list = Global.getPlainStatus(self);
//飞机图片
self.bitmap = self.list[0];
//显示
self.addChild(self.bitmap);
//枪口位置
self.shootx = self.list[1];
self.shooty = self.list[2];
//移动速度
self.speed = self.list[3];
//飞机hp
self.hp = self.list[4];
//移动方向
self.move = [0,0];
//发射子弹数
self.shootcount = 0;
//是否发射子弹
self.canshoot = true;
if(name=="player")self.canshoot = false;
}
/**
* 循环
* */
Plain.prototype.onframe = function (){
var self = this;
//移动
self.x += self.move[0]*self.speed;
self.y += self.move[1]*self.speed;
switch (self.name){
case "player":
//自机移动位置限制
if(self.x < 0)self.x = 0;
else if(self.x + self.bitmap.getWidth() > LGlobal.width)self.x = LGlobal.width-self.bitmap.getWidth();
if(self.y < 0)self.y = 0;
else if(self.y + self.bitmap.getHeight() > LGlobal.height)self.y = LGlobal.height-self.bitmap.getHeight();
break;
case "boss":
//敌机BOSS移动
if(self.y < 0){
self.y = 0;
self.move[1] = 1;
}else if(self.y + self.bitmap.getHeight() > LGlobal.height){
self.y = LGlobal.height-self.bitmap.getHeight() - 200;
self.move[1] = -1;
}
//碰撞检测
self.hitTest();
break;
case "enemy":
default:
//碰撞检测
self.hitTest();
}
//射击
if(self.canshoot)self.shoot();
};
/**
* 碰撞检测
* */
Plain.prototype.hitTest = function (){
var self = this;
var disx,disy,sw,ew;
sw = (self.bitmap.getWidth() + self.bitmap.getHeight())/4;
ew = (player.bitmap.getWidth() + player.bitmap.getHeight())/4;
disx = self.x+sw - (player.x + ew);
disy = self.y+self.bitmap.getHeight()/2 - (player.y + player.bitmap.getHeight()/2);
if(disx*disx + disy*disy < (sw+ew)*(sw+ew)){
self.hp--;
player.hp--;
if(player.hp <= 0){
player.visible = false;
gameover = true; }
}
};
/**
* 射击
* */
Plain.prototype.shoot = function (){
var self = this;
if(self.shootctrl++ < self.shootspeed)return;
self.shootctrl = 0;
if(self.name == "boss"){
if(self.shootcount++ % 40 > 5)return;
}else{
if(self.shootcount++ % 10 > 5)return;
}
Global.setBullet(self);
if(self.name == "boss"){
if(self.shootcount % 40 < 5)return;
}else{
if(self.shootcount % 10 < 5)return;
}
if(self.bullets.length <= 1)return;
self.bullet = self.bullets[Math.floor(Math.random()*self.bullets.length)];
self.shootspeed = Global.bulletList[self.bullet].shootspeed;
};
####Global.js
/**
* 共同类
* */
var Global = function (){};
/**
* 获取飞机属性
* @param 飞机
* */
Global.getPlainStatus = function(plainObject){
var list,bitmapdata,bitmap;
bitmapdata = new LBitmapData(imglist[plainObject.name]);
bitmap = new LBitmap(bitmapdata);
switch (plainObject.name){
case "player":
list = [bitmap,35,0,10,5];
break;
case "boss":
list = [bitmap,138,240,2,50];
break;
case "enemy":
default:
list = [bitmap,25,45,2,1];
}
return list;
};
/**
* 子弹类型数组
* 【开始角度，增加角度，子弹速度，角度加速度，子弹总数，发动频率，枪口旋转】
* */
Global.bulletList = new Array(
{startAngle:0,angle:20,speed:5,aspeed:0,count:1,shootspeed:10,sspeed:0},//1发
{startAngle:-20,angle:20,speed:5,aspeed:0,count:3,shootspeed:10,sspeed:0},//3发
{startAngle:0,angle:20,speed:5,aspeed:0,count:1,shootspeed:1,sspeed:20},//1发旋转
{startAngle:0,angle:20,speed:5,aspeed:0,count:18,shootspeed:3,sspeed:0},//环发
{startAngle:0,angle:20,speed:5,aspeed:1,count:18,shootspeed:3,sspeed:0},//环发旋转
{startAngle:180,angle:20,speed:5,aspeed:0,count:1,shootspeed:5,sspeed:0},//1发 up
{startAngle:160,angle:20,speed:5,aspeed:0,count:3,shootspeed:5,sspeed:0}//3发 up
);
/**
* 发射子弹
* @param 飞机
* */
Global.setBullet = function(plainObject){
var i,j,obj,xspeed,yspeed,kaku;
//获取子弹属性
var bullet = Global.bulletList[plainObject.bullet];
//设定枪口旋转
plainObject.sspeed += bullet.sspeed;
//开始发射
for(i=0;i < bullet.count;i++){
//发射角度
kaku = i*bullet.angle + bullet.startAngle + plainObject.sspeed;
//子弹xy轴速度
xspeed = bullet.speed*Math.sin(kaku * Math.PI / 180);
yspeed = barrageSpeed[0]*Math.cos(kaku * Math.PI / 180);
//子弹实例化
obj = new Bullet(plainObject.belong,plainObject.x+plainObject.shootx,plainObject.y+plainObject.shooty,kaku,xspeed,yspeed,bullet.aspeed,bullet.speed);
//显示
backLayer.addChild(obj);
barrage.push(obj);
}
};
####Main.js
/**
* Main
* */
//设定游戏速度，屏幕大小，回调函数
if(LGlobal.canTouch){
LGlobal.stageScale = LStageScaleMode.EXACT_FIT;
LSystem.screen(LStage.FULL_SCREEN);
}
init(30,"mylegend",320,508,main);
/**层变量*/
//显示进度条所用层
var loadingLayer;
//游戏最底层
var backLayer;
//控制层
var ctrlLayer;
/**int变量*/
//读取图片位置
var loadIndex = 0;
//贞数
var frames = 0;
//BOOS START
var boosstart = false;
//GAME OVER
var gameover = false;
//GAME CLEAR
var gameclear = false;
//得分
var point = 0;
/**对象变量*/
//玩家
var player;
//得分
var pointText;
/**数组变量*/
//图片path数组
var imgData = new Array();
//读取完的图片数组
var imglist = {};
//子弹数组
var barrage = new Array();
//子弹速度数组
var barrageSpeed = [5,10];
//储存所有敌人飞机的数组
var enemys = new Array();
function main(){
LMouseEventContainer.set(LMouseEvent.MOUSE_DOWN,true);
LMouseEventContainer.set(LMouseEvent.MOUSE_UP,true);
LMouseEventContainer.set(LMouseEvent.MOUSE_MOVE,true);
//准备读取图片
imgData.push({type:"js",path:"./js/Global.js"});
imgData.push({type:"js",path:"./js/Bullet.js"});
imgData.push({type:"js",path:"./js/Plain.js"});
imgData.push({name:"back",path:"./images/back.jpg"});
imgData.push({name:"enemy",path:"./images/e.png"});
imgData.push({name:"player",path:"./images/player.png"});
imgData.push({name:"boss",path:"./images/boss.png"});
imgData.push({name:"ctrl",path:"./images/ctrl.png"});
imgData.push({name:"item1",path:"./images/1.png"});
loadingLayer = new LoadingSample1();
addChild(loadingLayer);
LLoadManage.load(
imgData,
function(progress){
loadingLayer.setProgress(progress);
},
function(result){
imglist = result;
removeChild(loadingLayer);
loadingLayer = null;
gameInit();
}
);
}
function gameInit(event){
//游戏底层实例化
backLayer = new LSprite();
addChild(backLayer);
ctrlLayer = new LSprite();
addChild(ctrlLayer);
//添加游戏背景
bitmapdata = new LBitmapData(imglist["back"]);
bitmap = new LBitmap(bitmapdata);
backLayer.addChild(bitmap);
}
var monseIsDown = false;
function onup(event){
monseIsDown = false;
player.move = [0,0];
player.canshoot = false;
player.shootctrl = player.shootspeed;
}
function ondown(event){
monseIsDown = true;
player.shootcount = 0;
player.shootctrl = player.shootspeed+1;
player.canshoot = true;
}
/**
* 循环
* */
function onframe(){
if(gameover){//游戏结束
backLayer.die();
var txtOver = new LTextField();
txtOver.text = "GAME OVER";
txtOver.color = "#ffffff";
txtOver.x = 100;
txtOver.y = 200;
txtOver.size = 40;
backLayer.addChild(txtOver);
}else if(gameclear){//游戏通关
backLayer.die();
var txtOver = new LTextField();
txtOver.text = "GAME CLEAR";
txtOver.color = "#ffffff";
txtOver.x = 100;
txtOver.y = 200;
txtOver.size = 40;
backLayer.addChild(txtOver);
}
if(monseIsDown){
if(player.x + 30 - player.speed > LGlobal.offsetX){//left
player.move[0] = -1;
}else if(player.x + 30 + player.speed < LGlobal.offsetX){//right
player.move[0] = 1;
}else{
player.move[0] = 0;
}
if(player.y + 30 - player.speed > LGlobal.offsetY){//up
player.move[1] = -1;
}else if(player.y + 30 + player.speed < LGlobal.offsetY){//down
player.move[1] = 1;
}else{
player.move[1] = 0;
}
}
var i;
//循环子弹
for(i=0;i= 10){//得到10分的话，添加boss
//加入一个boss敌人
plain = new Plain("boss",1,100,0,[2,3,4]);
plain.move = [0,1];
enemys.push(plain);
backLayer.addChild(plain);
boosstart = true;
return;
}
if(frames++ % 100 > 0)return;//限制敌人出现频率
var rand = Math.random();
var b;
if(rand < 0.5){
if(rand < 0.3){
b=0;
}else{
b=1;
}
//左边加入一个敌人
plain = new Plain("enemy",1,0,100*Math.random(),[b]);
plain.move = [0.6,1];
}else{
if(rand < 0.8){
b=0;
}else{
b=1;
}
//右边加入一个敌人
plain = new Plain("enemy",1,520,100*Math.random(),[b]);
plain.move = [-0.6,1];
}
enemys.push(plain);
backLayer.addChild(plain);
}
window.addEventListener('tizenhwkey', function onTizenHwKey(e) {
if (e.keyName === 'back') {
try {
tizen.application.getCurrentApplication().exit();
} catch (err) {
console.log('Error: ', err);
}
}
},false);