本文实例讲述了js小游戏的宇宙战机源码，分享给大家供大家参考。具体介绍如下：
一、游戏介绍:
这是一款飞行射击游戏，纵向，共六关。
二、游戏需求:
1.战机可发射子弹，子弹可通过获取道具升级。
2.战机可放bomb，可获取道具增加数量。
3.战机可蓄力攻击。
4.道具有三种，分别是升级子弹，增加bomb数量，增加战机数量。
5.每关音乐不同。
6.战机被击落后再进入战场，有保护状态。
7.敌机AI设计。
游戏运行如下图所示:
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完整实例代码点击此处本站下载。
三、Javascript源码部分:
/** 宇宙战机
* Author: fdipzone
* Date: 2013-02-12
* Ver: 1.0
*/
window.onload = function(){
var gameimg = [
'images/fighter.png',
'images/fighter_p.png',
'images/fighter_s.png',
'images/fighter_sp.png',
'images/shot.png',
'images/destroy.png',
'images/destroy_boss.png',
'images/enemy.png',
'images/bullet.png',
'images/gift.png',
'images/bomb.png',
'images/boss1.png'];
var callback = function(){
var gameplane = $('gameplane');
fighter.init();
fighter.bgmove(gameplane);
}
img_preload(gameimg, callback);
};
/** fighter class */
var fighter = (function(){
var hiscore = 10000; // 最高分
var score = 0; // 当前分
var fighternum = 3; // 战机数量
var bombnum = 3; // 炸弹数量
var ft = null; // 战机对象
var is_start = 0; // 是否已开始游戏
var is_bombing = 0; // 是否爆炸中
var is_lock = 1; // 是否锁定
var is_over = 0; // 是否已结束
var is_clear = 0; // 清屏
var is_pile = 0; // 是否已达成蓄力
var is_protect = 0; // 是否保护状态
var pilenum = 0; // 已蓄力数量
var ackey = {}; // 记录键是否按下
var keypriority = {}; // 冲突键优先级
var gamekey = [37,38,39,40,83,65]; // 游戏的按键
var scoretag = [0,20,30,40,50,60,500]; // 不同敌机的分数
var level = 1; // 关数
var power = 1; // 战机子弹威力
var cheatcode = []; // 记录cheat输入
var failtimes = 0; // 挑战失败次数
// boss 数据
var bossdata = [
{'armor':500, 'left':136, 'top':-169, 'step':30},
{'armor':1000, 'left':136, 'top':-169, 'step':30},
{'armor':1500, 'left':136, 'top':-169, 'step':30},
{'armor':2000, 'left':136, 'top':-169, 'step':30},
{'armor':2500, 'left':136, 'top':-169, 'step':30},
{'armor':3000, 'left':136, 'top':-169, 'step':30},
];
// 出现的敌机
var enemydata = [];
// 当前出现的boss
var curboss = null;
// 关卡数据
var map = [
// level 1
{
'ms50':[[3, 680, 1, -50, 10, 10],[3, 680, 1, -50, 290, 10]],
'ms2500':[[3, 680, 1, -50, 70, 10],[3, 680, 1, -50, 220, 10]],
'ms3500':[[1, 10, 12, -23, 190, 10]],
'ms5500':[[3, 800, 2, 100, -50, 10]],
'ms7500':[[3, 800, 2, 200, 450, -10]],
'ms8000':[[1, 10, 11, -23, 100, 10]],
'ms9500':[[3, 800, 2, 100, -50, 10]],
'ms11500':[[3, 800, 2, 200, 450, -10]],
'ms13500':[[3, 800, 2, 100, -50, 10]],
'ms15500':[[3, 800, 3, -50, 30, 10],[3, 800, 3, -50, 340, 10]],
'ms20000':[[3, 800, 3, -50, 90, 10],[3, 800, 3, -50, 280, 10]],
'ms25000':[[1, 10, 4, 150, -50, 10],[1, 10, 4, 250, 400, -10],[1, 10, 4, 100, 400, -10]],
'ms30000':[[3, 800, 5, 692, 90, -10],[3, 800, 5, 692, 280, -10]],
'ms35000':[[3, 680, 1, -50, 70, 10],[3, 680, 1, -50, 220, 10]],
'ms38000':[[1, 10, 11, -23, 10, 10]],
'ms40000':[[1, 10, 4, 100, 400, -10],[1, 10, 4, 300, -50, 10]],
'ms42500':[[3, 680, 1, -50, 70, 10],[3, 680, 1, -50, 220, 10]],
'ms45500':[[3, 800, 2, 50, -50, 10]],
'ms47500':[[3, 800, 2, 150, 450, -10]],
'ms49500':[[3, 800, 2, 50, -50, 10]],
'ms51500':[[3, 800, 2, 150, 450, -10]],
'ms55500':[[3, 800, 3, -50, 90, 10],[3, 800, 3, -50, 280, 10]],
'ms60000':[[3, 800, 3, -50, 30, 10],[3, 800, 3, -50, 340, 10]],
'ms65000':[[1, 10, 4, 100, 400, -10],[1, 10, 4, 300, -50, 10]],
'ms68000':[[3, 800, 5, 692, 110, -10],[3, 800, 5, 692, 260, -10]],
'ms71000':[[1, 10, 13, -23, 220, 10]],
'ms76000':[]
},
// level 2
{
'ms50':[[3, 680, 1, -50, 10, 10],[3, 680, 1, -50, 290, 10]],
'ms2500':[[3, 680, 1, -50, 70, 10],[3, 680, 1, -50, 220, 10]],
'ms3500':[[1, 10, 12, -23, 190, 10]],
'ms5500':[[3, 800, 2, 100, -50, 10]],
'ms7500':[[3, 800, 2, 200, 450, -10]],
'ms8000':[[1, 10, 11, -23, 100, 10]],
'ms9500':[[3, 800, 2, 100, -50, 10]],
'ms11500':[[3, 800, 2, 200, 450, -10]],
'ms13500':[[3, 800, 2, 100, -50, 10]],
'ms15500':[[3, 800, 3, -50, 30, 10],[3, 800, 3, -50, 340, 10]],
'ms20000':[[3, 800, 3, -50, 90, 10],[3, 800, 3, -50, 280, 10]],
'ms25000':[[1, 10, 4, 150, -50, 10],[1, 10, 4, 250, 400, -10],[1, 10, 4, 100, 400, -10]],
'ms30000':[[3, 800, 5, 692, 90, -10],[3, 800, 5, 692, 280, -10]],
'ms35000':[[3, 680, 1, -50, 70, 10],[3, 680, 1, -50, 220, 10]],
'ms38000':[[1, 10, 11, -23, 10, 10]],
'ms40000':[[1, 10, 4, 100, 400, -10],[1, 10, 4, 300, -50, 10]],
'ms42500':[[3, 680, 1, -50, 70, 10],[3, 680, 1, -50, 220, 10]],
'ms45500':[[3, 800, 2, 50, -50, 10]],
'ms47500':[[3, 800, 2, 150, 450, -10]],
'ms49500':[[3, 800, 2, 50, -50, 10]],
'ms51500':[[3, 800, 2, 150, 450, -10]],
'ms55500':[[3, 800, 3, -50, 90, 10],[3, 800, 3, -50, 280, 10]],
'ms60000':[[3, 800, 3, -50, 30, 10],[3, 800, 3, -50, 340, 10]],
'ms65000':[[1, 10, 4, 100, 400, -10],[1, 10, 4, 300, -50, 10]],
'ms68000':[[3, 800, 5, 692, 110, -10],[3, 800, 5, 692, 260, -10]],
'ms71000':[[1, 10, 13, -23, 220, 10]],
'ms76000':[]
},
// level 3
{
'ms50':[[3, 680, 1, -50, 10, 10],[3, 680, 1, -50, 290, 10]],
'ms2500':[[3, 680, 1, -50, 70, 10],[3, 680, 1, -50, 220, 10]],
'ms3500':[[1, 10, 12, -23, 190, 10]],
'ms5500':[[3, 800, 2, 100, -50, 10]],
'ms7500':[[3, 800, 2, 200, 450, -10]],
'ms8000':[[1, 10, 11, -23, 100, 10]],
'ms9500':[[3, 800, 2, 100, -50, 10]],
'ms11500':[[3, 800, 2, 200, 450, -10]],
'ms13500':[[3, 800, 2, 100, -50, 10]],
'ms15500':[[3, 800, 3, -50, 30, 10],[3, 800, 3, -50, 340, 10]],
'ms20000':[[3, 800, 3, -50, 90, 10],[3, 800, 3, -50, 280, 10]],
'ms25000':[[1, 10, 4, 150, -50, 10],[1, 10, 4, 250, 400, -10],[1, 10, 4, 100, 400, -10]],
'ms30000':[[3, 800, 5, 692, 90, -10],[3, 800, 5, 692, 280, -10]],
'ms35000':[[3, 680, 1, -50, 70, 10],[3, 680, 1, -50, 220, 10]],
'ms38000':[[1, 10, 11, -23, 10, 10]],
'ms40000':[[1, 10, 4, 100, 400, -10],[1, 10, 4, 300, -50, 10]],
'ms42500':[[3, 680, 1, -50, 70, 10],[3, 680, 1, -50, 220, 10]],
'ms45500':[[3, 800, 2, 50, -50, 10]],
'ms47500':[[3, 800, 2, 150, 450, -10]],
'ms49500':[[3, 800, 2, 50, -50, 10]],
'ms51500':[[3, 800, 2, 150, 450, -10]],
'ms55500':[[3, 800, 3, -50, 90, 10],[3, 800, 3, -50, 280, 10]],
'ms60000':[[3, 800, 3, -50, 30, 10],[3, 800, 3, -50, 340, 10]],
'ms65000':[[1, 10, 4, 100, 400, -10],[1, 10, 4, 300, -50, 10]],
'ms68000':[[3, 800, 5, 692, 110, -10],[3, 800, 5, 692, 260, -10]],
'ms71000':[[1, 10, 13, -23, 220, 10]],
'ms76000':[]
},
// level 4
{
'ms50':[[3, 680, 1, -50, 10, 10],[3, 680, 1, -50, 290, 10]],
'ms2500':[[3, 680, 1, -50, 70, 10],[3, 680, 1, -50, 220, 10]],
'ms3500':[[1, 10, 12, -23, 190, 10]],
'ms5500':[[3, 800, 2, 100, -50, 10]],
'ms7500':[[3, 800, 2, 200, 450, -10]],
'ms8000':[[1, 10, 11, -23, 100, 10]],
'ms9500':[[3, 800, 2, 100, -50, 10]],
'ms11500':[[3, 800, 2, 200, 450, -10]],
'ms13500':[[3, 800, 2, 100, -50, 10]],
'ms15500':[[3, 800, 3, -50, 30, 10],[3, 800, 3, -50, 340, 10]],
'ms20000':[[3, 800, 3, -50, 90, 10],[3, 800, 3, -50, 280, 10]],
'ms25000':[[1, 10, 4, 150, -50, 10],[1, 10, 4, 250, 400, -10],[1, 10, 4, 100, 400, -10]],
'ms30000':[[3, 800, 5, 692, 90, -10],[3, 800, 5, 692, 280, -10]],
'ms35000':[[3, 680, 1, -50, 70, 10],[3, 680, 1, -50, 220, 10]],
'ms38000':[[1, 10, 11, -23, 10, 10]],
'ms40000':[[1, 10, 4, 100, 400, -10],[1, 10, 4, 300, -50, 10]],
'ms42500':[[3, 680, 1, -50, 70, 10],[3, 680, 1, -50, 220, 10]],
'ms45500':[[3, 800, 2, 50, -50, 10]],
'ms47500':[[3, 800, 2, 150, 450, -10]],
'ms49500':[[3, 800, 2, 50, -50, 10]],
'ms51500':[[3, 800, 2, 150, 450, -10]],
'ms55500':[[3, 800, 3, -50, 90, 10],[3, 800, 3, -50, 280, 10]],
'ms60000':[[3, 800, 3, -50, 30, 10],[3, 800, 3, -50, 340, 10]],
'ms65000':[[1, 10, 4, 100, 400, -10],[1, 10, 4, 300, -50, 10]],
'ms68000':[[3, 800, 5, 692, 110, -10],[3, 800, 5, 692, 260, -10]],
'ms71000':[[1, 10, 13, -23, 220, 10]],
'ms76000':[]
},
// level 5
{
'ms50':[[3, 680, 1, -50, 10, 10],[3, 680, 1, -50, 290, 10]],
'ms2500':[[3, 680, 1, -50, 70, 10],[3, 680, 1, -50, 220, 10]],
'ms3500':[[1, 10, 12, -23, 190, 10]],
'ms5500':[[3, 800, 2, 100, -50, 10]],
'ms7500':[[3, 800, 2, 200, 450, -10]],
'ms8000':[[1, 10, 11, -23, 100, 10]],
'ms9500':[[3, 800, 2, 100, -50, 10]],
'ms11500':[[3, 800, 2, 200, 450, -10]],
'ms13500':[[3, 800, 2, 100, -50, 10]],
'ms15500':[[3, 800, 3, -50, 30, 10],[3, 800, 3, -50, 340, 10]],
'ms20000':[[3, 800, 3, -50, 90, 10],[3, 800, 3, -50, 280, 10]],
'ms25000':[[1, 10, 4, 150, -50, 10],[1, 10, 4, 250, 400, -10],[1, 10, 4, 100, 400, -10]],
'ms30000':[[3, 800, 5, 692, 90, -10],[3, 800, 5, 692, 280, -10]],
'ms35000':[[3, 680, 1, -50, 70, 10],[3, 680, 1, -50, 220, 10]],
'ms38000':[[1, 10, 11, -23, 10, 10]],
'ms40000':[[1, 10, 4, 100, 400, -10],[1, 10, 4, 300, -50, 10]],
'ms42500':[[3, 680, 1, -50, 70, 10],[3, 680, 1, -50, 220, 10]],
'ms45500':[[3, 800, 2, 50, -50, 10]],
'ms47500':[[3, 800, 2, 150, 450, -10]],
'ms49500':[[3, 800, 2, 50, -50, 10]],
'ms51500':[[3, 800, 2, 150, 450, -10]],
'ms55500':[[3, 800, 3, -50, 90, 10],[3, 800, 3, -50, 280, 10]],
'ms60000':[[3, 800, 3, -50, 30, 10],[3, 800, 3, -50, 340, 10]],
'ms65000':[[1, 10, 4, 100, 400, -10],[1, 10, 4, 300, -50, 10]],
'ms68000':[[3, 800, 5, 692, 110, -10],[3, 800, 5, 692, 260, -10]],
'ms71000':[[1, 10, 13, -23, 220, 10]],
'ms76000':[]
},
// level 6
{
'ms50':[[3, 680, 1, -50, 10, 10],[3, 680, 1, -50, 290, 10]],
'ms2500':[[3, 680, 1, -50, 70, 10],[3, 680, 1, -50, 220, 10]],
'ms3500':[[1, 10, 12, -23, 190, 10]],
'ms5500':[[3, 800, 2, 100, -50, 10]],
'ms7500':[[3, 800, 2, 200, 450, -10]],
'ms8000':[[1, 10, 11, -23, 100, 10]],
'ms9500':[[3, 800, 2, 100, -50, 10]],
'ms11500':[[3, 800, 2, 200, 450, -10]],
'ms13500':[[3, 800, 2, 100, -50, 10]],
'ms15500':[[3, 800, 3, -50, 30, 10],[3, 800, 3, -50, 340, 10]],
'ms20000':[[3, 800, 3, -50, 90, 10],[3, 800, 3, -50, 280, 10]],
'ms25000':[[1, 10, 4, 150, -50, 10],[1, 10, 4, 250, 400, -10],[1, 10, 4, 100, 400, -10]],
'ms30000':[[3, 800, 5, 692, 90, -10],[3, 800, 5, 692, 280, -10]],
'ms35000':[[3, 680, 1, -50, 70, 10],[3, 680, 1, -50, 220, 10]],
'ms38000':[[1, 10, 11, -23, 10, 10]],
'ms40000':[[1, 10, 4, 100, 400, -10],[1, 10, 4, 300, -50, 10]],
'ms42500':[[3, 680, 1, -50, 70, 10],[3, 680, 1, -50, 220, 10]],
'ms45500':[[3, 800, 2, 50, -50, 10]],
'ms47500':[[3, 800, 2, 150, 450, -10]],
'ms49500':[[3, 800, 2, 50, -50, 10]],
'ms51500':[[3, 800, 2, 150, 450, -10]],
'ms55500':[[3, 800, 3, -50, 90, 10],[3, 800, 3, -50, 280, 10]],
'ms60000':[[3, 800, 3, -50, 30, 10],[3, 800, 3, -50, 340, 10]],
'ms65000':[[1, 10, 4, 100, 400, -10],[1, 10, 4, 300, -50, 10]],
'ms68000':[[3, 800, 5, 692, 110, -10],[3, 800, 5, 692, 260, -10]],
'ms71000':[[1, 10, 13, -23, 220, 10]],
'ms76000':[]
}
];
// 初始化
init = function(){
ft = $('fighter');
reset();
key_event();
}
// 开始游戏
start = function(){
is_clear = 0;
is_protect = 0;
disp(ft.id, 'show');
reset_fighter();
reset_pile();
process();
bgsound(level, true);
bgchange(level);
fighter_init();
}
// 设置事件
key_event = function(){
document.onkeydown = function(e){
var e = e || window.event;
var curkey = e.keyCode || e.which || e.charCode;
if(is_start==0){
if(cheatcode.length>12){
cheatcode.shift();
}
cheatcode.push(curkey); // 记录用户输入的cheatcode
}
if(is_start==1 && in_array(curkey,gamekey)){
if(ackey[curkey.toString()]==0 || typeof(ackey[curkey.toString()])=='undefined' || !in_array(curkey,[83,65])){ // 射击与炸弹连按屏蔽
ackey[curkey.toString()] = 1; // save key down
switch(curkey){
case 37:
case 39:
keypriority.left = curkey; // left right
break;
case 38:
case 40:
keypriority.top = curkey; // up down
break;
}
}else{
return false;
}
}
if(curkey==13 || is_start==1 && is_lock==0){ // game is start or key=13
switch(curkey){
case 13: // enter
if(is_start==0){
is_start=1;
disp('op', 'hide');
msg_show();
setTimeout(function(){
msg_hide();
cheat();
start();
}, 1500);
}
break;
case 83: // 射击
shot();
break;
case 65: // 炸弹
bomb();
break;
}
}
}
document.onkeyup = function(e){
var e = e || window.event;
var curkey = e.keyCode || e.which || e.charCode;
if(is_start==1 && in_array(curkey,gamekey)){
ackey[curkey.toString()] = 0; // release key down
if(curkey==83){// 释放蓄力攻击
if(is_pile==1){
pile_shot();
}
reset_pile();
}
}
}
}
// 循环执行的动作
action = function(){
var movestep = 5; // 移动步长
var et = setInterval(function(){
if(is_start==0 || is_lock==1){
clearInterval(et);
}
// 移动
if(ackey['37']==1 && (ackey['39']==0 || keypriority.left==37)){ // 冲突时判断优先级
if(getPosition(ft,'left')0){ // 不是爆炸中且有炸弹数
is_bombing = 1;
bombnum --;
setHtml('bombnum', bombnum); // 自减1
var opacity = 100;
setOpacity($('bomb'), opacity);
disp('bomb', 'show');
// 清除所有敌机及敌方子弹
is_clear = 1;
// 打击boss
if(curboss!=null){
curboss['armor'] = parseInt(curboss['armor'])-300;
}
var step = 0;
var et = setInterval(function(){ // 炸弹效果
if(step<11){
setBgPosition($('bomb'), 0, step*(-280));
}else{
clearInterval(et);
disp('bomb', 'hide');
is_bombing = 0;
is_clear = 0;
}
step ++;
}, 70);
}
}
// 游戏进程
process = function(){
var leveldata = map[level-1], processed = 0, step = 10;
var levelstep = 0; // 每关开始清0
var et = setInterval(function(){
if(is_lock==0){
processed += step;
if(attrcount(leveldata)>levelstep){ // 未完成本关
if(leveldata['ms'+processed]){
for(var i=0; i0){
var enft = document.createElement('div');
setClass(enft, 'element' + type);
enft.type = type;
setPosition(enft, 'top', top);
setPosition(enft, 'left', left);
ft.parentNode.appendChild(enft);
if(type<=10){
enemydata.push(enft);
}
route(enft, type, step);
num--;
}else{
clearInterval(et);
}
}, interval);
}
// 元素运动轨迹
route = function(enft, type, step){
var et = null;
switch(type){
case 1: // 曲线
var count = 0;
et = setInterval(function(){
if(node_exist(enft)){
setPosition(enft, 'top', getPosition(enft,'top')+Math.abs(step));
setPosition(enft, 'left', getPosition(enft,'left')+step);
count<5? count++ : (count=0, step*=-1);
if(getPosition(enft, 'top')>640 || is_over==1 || is_clear==1){
clearInterval(et);
ft.parentNode.removeChild(enft);
}
impact_handle(enft, et);
}else{
clearInterval(et);
}
}, 80);
break;
case 2: // 横向
var count = 0;
et = setInterval(function(){
if(node_exist(enft)){
setPosition(enft, 'left', getPosition(enft,'left')+step);
count<9? count++ : (count=0, attack(enft,1,17,47));
if(getPosition(enft,'left')>400 && step>0 || getPosition(enft,'left')<-50 && step<0 || is_over==1 || is_clear==1){
clearInterval(et);
ft.parentNode.removeChild(enft);
}
impact_handle(enft, et);
}else{
clearInterval(et);
}
}, 80);
break;
case 3: // 竖向
var count = 0;
et = setInterval(function(){
if(node_exist(enft)){
setPosition(enft, 'top', getPosition(enft,'top')+step);
count<9? count++ : (count=0, attack(enft,1,17,47));
if(getPosition(enft,'top')>640 || is_over==1 || is_clear==1){
clearInterval(et);
ft.parentNode.removeChild(enft);
}
impact_handle(enft, et);
}else{
clearInterval(et);
}
}, 75);
break;
case 4: // 左右循环移动攻击
var count = 0;
et = setInterval(function(){
if(node_exist(enft)){
setPosition(enft, 'left', getPosition(enft,'left')+step);
count<10? count++ : (count=0, attack(enft,4,17,31));
if(getPosition(enft,'left')>=350 && step>0 || getPosition(enft,'left')<=0 && step<0){
step*=-1;
}
if(is_over==1 || is_clear==1){
clearInterval(et);
ft.parentNode.removeChild(enft);
}
impact_handle(enft, et);
}else{
clearInterval(et);
}
}, 80);
break;
case 5: // 从后面攻击
var count = 0;
et = setInterval(function(){
if(node_exist(enft)){
setPosition(enft, 'top', getPosition(enft,'top')+step);
count<9? count++ : (count=0, attack(enft,1,17,-17));
if(getPosition(enft,'top')<-32 || is_over==1 || is_clear==1){
clearInterval(et);
ft.parentNode.removeChild(enft);
}
impact_handle(enft, et);
}else{
clearInterval(et);
}
}, 75);
break;
case 11: // power gift
var count = 0;
et = setInterval(function(){
if(node_exist(enft)){
setPosition(enft, 'top', getPosition(enft,'top')+Math.abs(step));
setPosition(enft, 'left', getPosition(enft,'left')+step);
count<5? count++ : (count=0, step*=-1);
if(getPosition(enft, 'top')>640 || is_over==1){
clearInterval(et);
ft.parentNode.removeChild(enft);
}
if(impact(enft, ft) && is_lock==0){ // 奖励与战机相撞
powerup();
ft.parentNode.removeChild(enft);
clearInterval(et);
}
}else{
clearInterval(et);
}
}, 80);
break;
case 12: // bomb gift
var count = 0;
et = setInterval(function(){
if(node_exist(enft)){
setPosition(enft, 'top', getPosition(enft,'top')+Math.abs(step));
setPosition(enft, 'left', getPosition(enft,'left')+step);
count<5? count++ : (count=0, step*=-1);
if(getPosition(enft, 'top')>640 || is_over==1){
clearInterval(et);
ft.parentNode.removeChild(enft);
}
if(impact(enft, ft) && is_lock==0){ // 奖励与战机相撞
bombup();
ft.parentNode.removeChild(enft);
clearInterval(et);
}
}else{
clearInterval(et);
}
}, 80);
break;
case 13: // fighter gift
var count = 0;
et = setInterval(function(){
if(node_exist(enft)){
setPosition(enft, 'top', getPosition(enft,'top')+Math.abs(step));
setPosition(enft, 'left', getPosition(enft,'left')+step);
count<5? count++ : (count=0, step*=-1);
if(getPosition(enft, 'top')>640 || is_over==1){
clearInterval(et);
ft.parentNode.removeChild(enft);
}
if(impact(enft, ft) && is_lock==0){ // 奖励与战机相撞
fighterup();
ft.parentNode.removeChild(enft);
clearInterval(et);
}
}else{
clearInterval(et);
}
}, 80);
break;
}
}
// 销毁
destroy = function(dobj){ // dobj:被销毁的对象
var dest = document.createElement('div');
setClass(dest, 'destroy');
setPosition(dest, 'top', getPosition(dobj, 'top'));
setPosition(dest, 'left', getPosition(dobj, 'left'));
ft.parentNode.appendChild(dest);
if(dobj.id=='fighter'){ // 战机被击中
disp(dobj.id, 'hide');
power = 1;
bombnum = 3;
fighternum--;
setHtml('fighternum', fighternum);
setHtml('bombnum', bombnum);
is_lock = 1;
}else{
dobj.parentNode.removeChild(dobj);
}
var step = 0;
var et = setInterval(function(){
if(step<11){
setBgPosition(dest, step*(-48), 0);
step++;
}else{
if(dobj.id=='fighter'){
setTimeout(function(){
if(fighternum>0){
levelcontinue();
}else{
if(curboss!=null){
obj = curboss['obj'];
obj.parentNode.removeChild(obj);
}
gameover(); //战机全部被击中,游戏结束
}
},1000);
}
dest.parentNode.removeChild(dest);
clearInterval(et);
}
}, 50);
}
// boss war
bosswar = function(){
var boss = bossdata[level-1];
var bossft = document.createElement('div');
setClass(bossft, 'boss' + level);
setPosition(bossft, 'left', boss['left']);
setPosition(bossft, 'top', boss['top']);
ft.parentNode.appendChild(bossft);
curboss = {"armor":boss['armor'],"obj":bossft};
switch(level){
case 1: // boss 1
case 2: // boss 2
case 3: // boss 3
case 4: // boss 4
case 5: // boss 5
case 6: // boss 6
var step = -3;
var count = 0;
var et = setInterval(function(){
if(getPosition(bossft,'top')<50){ // boss 进场
setPosition(bossft, 'top', getPosition(bossft, 'top')+5);
}else{
if(curboss['armor']<=0){ // boss over
clearInterval(et);
bossover();
}else{
if(step<0){ // 左移动
if(getPosition(bossft,'left')>10){
setPosition(bossft, 'left', getPosition(bossft, 'left')+step);
}else{
step*=-1;
}
}
if(step>0){ // 右移动
if(getPosition(bossft,'left')<260){
setPosition(bossft, 'left', getPosition(bossft, 'left')+step);
}else{
step*=-1;
}
}
if(count>=35 && count%35==0){
attack(bossft, 1, 30, 30);
attack(bossft, 1, 80, 30);
}
if(count>=60 && count%60==0){
attack(bossft, 2, 15, 75);
attack(bossft, 2, 105, 75);
}
if(count>=100 && count%100==0){
attack(bossft, 3, 60, 92);
}
count<8400? count++ : count=0;
}
}
}, boss['step']);
break;
}
}
/* attack
* obj 敌机
* type 攻击类型
* left 子弹初始left
* top 子弹初始top
*/
attack = function(obj, type, left, top){
if(is_lock==1){
return false; // 如已锁定不射击
}
var oleft = getPosition(obj, 'left')+left;
var otop = getPosition(obj, 'top')+top;
switch(type){
case 1: //向战机攻击
// 子弹初始位置与战机位置
var opoint = {x:oleft+7, y:otop+7};
var dpoint = {x:getPosition(ft,'left')+25, y:getPosition(ft,'top')+25};
var p = vector(opoint, dpoint, 8);
enftbullet('bullet', oleft, otop, p[0], p[1], 35);
break;
case 2: //直线攻击
var num = 3;
var st = setInterval(function(){
if(num>0){
enftbullet('bullet', oleft, otop, 0, 8, 35);
num --;
}else{
clearInterval(st);
}
}, 150);
break;
case 3: // 散开攻击
var num = 3;
var st = setInterval(function(){
if(num>0){
switch(num){
case 1:
enftbullet('sbullet', oleft, otop, 0, 8, 35);
break;
case 2:
enftbullet('sbullet', oleft, otop, 3, 8, 35);
break;
case 3:
enftbullet('sbullet', oleft, otop, -3, 8, 35);
break;
}
num --;
}else{
clearInterval(st);
}
}, 0);
break;
case 4: // 小散开攻击
var num = 3;
var st = setInterval(function(){
if(num>0){
switch(num){
case 1:
enftbullet('bullet', oleft, otop, 0, 8, 35);
break;
case 2:
enftbullet('bullet', oleft, otop, 3, 8, 35);
break;
case 3:
enftbullet('bullet', oleft, otop, -3, 8, 35);
break;
}
num --;
}else{
clearInterval(st);
}
}, 0);
break;
}
}
/* enft bullet
* type 子弹类型
* oleft,otop 子弹初始位置
* left,top 子弹徧移
* speed 速度
*/
enftbullet = function(type, oleft, otop, left, top, speed){
var bullet = document.createElement('div');
setClass(bullet, type);
setPosition(bullet, 'left', oleft);
setPosition(bullet, 'top', otop);
ft.parentNode.appendChild(bullet);
var et = setInterval(function(){
setPosition(bullet, 'top', getPosition(bullet,'top')+top);
setPosition(bullet, 'left', getPosition(bullet,'left')+left);
if(getPosition(bullet,'left')>400 || getPosition(bullet,'left')<-30 || getPosition(bullet,'top')<-30 || getPosition(bullet,'top')>640 || is_lock==1 || is_clear==1){
clearInterval(et);
ft.parentNode.removeChild(bullet);
}
impact_handle(bullet, et);
}, speed);
}
// boss over
bossover = function(){
obj = curboss['obj'];
obj.parentNode.removeChild(obj);
scoreup(6); // boss score
var dest = document.createElement('div');
setClass(dest, 'destroyboss');
setPosition(dest, 'top', getPosition(obj, 'top'));
setPosition(dest, 'left', getPosition(obj, 'left'));
ft.parentNode.appendChild(dest);
var step = 0;
var et = setInterval(function(){
if(step<21){
setBgPosition(dest, step*(-150), 0);
}else if(step==21){
dest.parentNode.removeChild(dest);
}else if(step==50){
clearInterval(et);
levelup();
}
step++;
}, 50);
}
// continue
levelcontinue = function(){
reset_fighter();
disp(ft.id, 'show');
setProtect();
fighter_init();
}
// 过关
levelup = function(){
keypriority = {};
enemydata = [];
curboss = null;
level ++;
bgsound('pass', false);
var processed = 0;
var et = setInterval(function(){
is_lock = 1;
processed = processed + 15;
if(getPosition(ft, 'top')>-50){
setPosition(ft, 'top', getPosition(ft, 'top')-15);
}
if(processed>=2500){
clearInterval(et);
disp(ft.id, 'hide');
if(level<=map.length){
bgchange(0);
msg_show();
setTimeout(function(){
msg_hide();
start();
}, 1500);
}else{
gameclear(); // 通关
}
}
}, 25);
}
// 更新分数
scoreup = function(type){
if(typeof(scoretag[type])!='undefined'){
score = score + scoretag[type] * level;
setHtml('score', score);
if(score > hiscore){
hiscore = score;
setHtml('hiscore', hiscore);
}
}
}
// 子弹升级
powerup = function(){
power = power+1>4? 4 : power+1;
}
// 炸弹增加
bombup = function(){
bombnum ++;
setHtml('bombnum', bombnum);
}
// 战机增加
fighterup = function(){
fighternum ++;
setHtml('fighternum', fighternum);
}
// 保护状态
setProtect = function(){
is_protect = 1;
if(is_pile==1){
setClass(ft, 'fighter_sp');
}else{
setClass(ft, 'fighter_p');
}
setTimeout(function(){
is_protect = 0;
if(is_pile==1){
setClass(ft, 'fighter_s');
}else{
setClass(ft, 'fighter');
}
}, 3000)
}
// 碰撞处理
impact_handle = function(obj, et){ // et 定时器
if(impact(obj, ft) && is_lock==0){ // 产生碰撞
if(is_protect==0){
destroy(ft);
clearInterval(et);
ft.parentNode.removeChild(obj);
}
}
}
// 全部通关
gameclear = function(){
is_over = 1;
disp('gameclear', 'show');
setHtml('clearcon', 'Game Clear' + '
' + 'SCORE : ' + score);
bgsound('clear', false);
bgchange('clear');
setTimeout(function(){
bgsound();
init();
}, 16000);
}
// 游戏结束
gameover = function(){
is_over = 1;
disp('gameover', 'show');
setHtml('overcon', 'LEVEL : ' + level + '
' + 'SCORE : ' + score);
bgsound('over', false);
bgchange('over');
failtimes++;
setTimeout(function(){
if(failtimes==3){
alert('在游戏开始画面依次输入 ↑ ↑ ↓ ↓ ← → ← → a s a s，再开始游戏，会有惊喜^_^');
}
bgsound();
init();
}, 8000);
}
// 显示讯息
msg_show = function(){
setHtml('level', 'LEVEL - ' + level);
disp('level', 'show');
is_lock = 1;
}
// 隐藏讯息
msg_hide = function(){
disp('level', 'hide');
}
// 重置
reset = function(){
is_start = 0;
is_bombing = 0;
is_lock = 1;
is_over = 0;
is_clear = 0;
is_protect = 0;
level = 1;
power = 1;
ackey = {};
keypriority = {};
enemydata = [];
score = 0;
fighternum = 3;
bombnum = 3;
setHtml('hiscore', hiscore);
setHtml('score', score);
setHtml('fighternum', fighternum);
setHtml('bombnum', bombnum);
reset_fighter();
reset_pile();
disp('op', 'show');
disp('gameover', 'hide');
disp('gameclear', 'hide');
bgchange(0);
}
// 重置战机位置
reset_fighter = function(){
setPosition(ft, 'top', 640);
setPosition(ft, 'left', 175);
setClass(ft, 'fighter');
}
// 重置蓄力
reset_pile = function(){
is_pile = 0;
pilenum = 0;
if(is_protect==1){
setClass(ft, 'fighter_p');
}else{
setClass(ft, 'fighter');
}
}
// 战机初始化
fighter_init = function(){
var et = setInterval(function(){
if(getPosition(ft, 'top')>400){
setPosition(ft, 'top', getPosition(ft, 'top')-12);
}else{
clearInterval(et);
is_lock = 0;
action();
}
}, 30);
}
// 密技30命
cheat = function(){
if(cheatcode.join(',')=='38,38,40,40,37,39,37,39,65,83,65,83,13'){
fighternum = 30;
setHtml('fighternum', fighternum);
}
cheatcode = [];
}
// 背景控制
bgmove = function(obj){
var step = 1;
var et = setInterval(function(){
var bgpos = getBgPosition(obj);
if(bgpos['top']==640){
setBgPosition(obj, 0, 0); // reset
}else{
setBgPosition(obj, bgpos['left'], bgpos['top']+step);
}
}, 50);
}
// 背景切换
bgchange = function(file){
var obj = $('gameplane');
setClass(obj, 'gameplane bg'+file);
}
// 音乐控制
bgsound = function(file, loop){
var id = 'audioplayer';
if(typeof(file)!='undefined'){
if(typeof(loop)=='undefined'){
loop = false;
}
var audiofile = [];
audiofile['mp3'] = 'music/' + file + '.mp3';
audiofile['ogg'] = 'music/' + file + '.ogg';
audioplayer(id, audiofile , loop);
}else{
audioplayer(id);
}
}
return this;
})();
相信本文所述对大家javascript游戏设计有一定的借鉴价值。
