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index.html
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<!Doctype html>
<html>
<head>
<title>battle starship</title>
<style>
tab1{padding-left: 8em;}
</style>
</head>
<body>
<div align="center">
<h1>Welcome to <strong>BATTLE STARSHIP</strong></h1>
<canvas id="background" height=400px width=1000px>your bowser did <strong>not</strong
> support html5, please use another bownser</canvas>
<h6>For player 1(red): use 'a' or 'd' to open left or right engine, and use 'w' to shoot.<tab1
>For player 2(blue): use 'j' or 'l' to open left or right engine, and use 'i' to shoot.</tab1></h6>
<h6 id='debug'></h6>
</div>
<script>
var debugmode=0;
//setup
var speedx=1;
var bg=document.getElementById("background");
var redbg=bg.getContext('2d');
var bluebg=bg.getContext('2d');
var redbase=bg.getContext('2d');
var bluebase=bg.getContext('2d');
var bomb=bg.getContext('2d');
var redtower_face=3/2*Math.PI;
var bluetower_face=1/2*Math.PI;
var redtower=false;
var bluetower=false;
var redtowerdelay=0;
var bluetowerdelay=0;
var win=0;
var mid_place=500;
var mid_goal=500;
var reset=false;
var bombs=[];
var ammos=[];
function getDis( x1, y1, x2, y2){
return Math.sqrt((x2-x1)*(x2-x1)+(y2-y1)*(y2-y1));
}
function drawbackground(){
//background animate
mid_place-=(mid_place-mid_goal)/10;
//draw background
redbg.fillStyle='#FF9999';
redbg.fillRect(0,0,mid_place,400);
bluebg.fillStyle='#9999FF';
bluebg.fillRect(mid_place,0,1200,400);
}
function drawbase(){
redbase.fillStyle='#FF4500';
redbase.fillRect(0,50,125,300);
redbase.beginPath();
redbase.arc(112,125,40,0,2*Math.PI,true);
redbase.fillStyle='#FF4500';
redbase.closePath();
redbase.fill();
redbase.save();
redbase.translate(112, 125);
redbase.rotate(redtower_face);
redbase.fillRect(-15, 25, 30, 30);
redbase.restore();
bluebase.fillStyle='#0000FF';
bluebase.fillRect(875,50,125,300);
bluebase.beginPath();
bluebase.arc(888,275,40,0,2*Math.PI,true);
bluebase.fillStyle='#0000FF';
bluebase.closePath();
bluebase.fill();
bluebase.save();
bluebase.translate(888, 275);
bluebase.rotate(bluetower_face);
bluebase.fillRect(-15, 25, 30, 30);
bluebase.restore();
}
var left1=0,right1=0,left2=0,right2=0,shoot1=0,shoot2=0;
//player setup
var player1 = {
rightpush: 0, leftpush: 0,
health: 3, shootdelay: 0, score: 0,
posx: 125, posy: 200,
spawnx: 125, spawny: 200,
face: 90,
point1x: 0, point2x: 0, point3x: 0,
point1y: 0, point2y: 0, point3y: 0,
};
var player2 = {
rightpush: 0, leftpush: 0,
health: 3, shootdelay: 0, score: 0,
posx: 875, posy: 200,
spawnx: 875, spawny: 200,
face: 270,
point1x: 0, point2x: 0, point3x: 0,
point1y: 0, point2y: 0, point3y: 0,
};
function Bomb(side,face){
this.size=20;
this.side=side;//0->red,1->blue
this.face=face
if(this.side==0){
this.x=112; this.y=125;
}
else if(this.side==1){
this.x=888; this.y=275;
}
this.visable=true
}
Bomb.prototype.update = function (){
//move
this.x -= 3*Math.sin(this.face);
this.y += 3*Math.cos(this.face);
if(this.x<0||this.x>1000||this.y<0||this.y>400||win!=0){
this.visable=false;
}
//draw
if(this.visable){
console.log(this.face);
bomb.beginPath();
bomb.arc(this.x,this.y,this.size,0,2*Math.PI,true);
if(this.side==0) bomb.fillStyle='#FF4500';
else if(this.side==1) bomb.fillStyle='#0000FF';
bomb.closePath();
bomb.fill();
}
//hit
if(this.side==0){
if(getDis(this.x,this.y,player2.point1x,player2.point1y) < 24*Math.sqrt(5)+this.size
&& getDis(this.x,this.y,player2.point2x,player2.point2y) < 24*Math.sqrt(5)+this.size
&& getDis(this.x,this.y,player2.point3x,player2.point3y) < 24*Math.sqrt(5)+this.size
&& this.visable==1){
this.visable=0;
player2.health-=2;
}
}else if(this.side==1){
if(getDis(this.x,this.y,player1.point1x,player1.point1y) < 24*Math.sqrt(5)+this.size
&& getDis(this.x,this.y,player1.point2x,player1.point2y) < 24*Math.sqrt(5)+this.size
&& getDis(this.x,this.y,player1.point3x,player1.point3y) < 24*Math.sqrt(5)+this.size
&& this.visable==1){
this.visable=0;
player1.health-=2;
}
}
}
function Ammo(side,face,x,y){
this.size=20;
this.side=side;//0->red,1->blue
this.face=face;
this.posx =x;
this.posy =y;
this.point1x=this.posx+15*Math.sin(this.face*Math.PI/180);
this.point1y=this.posy-15*Math.cos(this.face*Math.PI/180);
this.point2x=this.posx-15*Math.sin(this.face*Math.PI/180);
this.point2y=this.posy+15*Math.cos(this.face*Math.PI/180);
this.visable=true;
}
Ammo.prototype.update = function (){
//move
this.posx += 10*Math.sin(this.face*Math.PI/180);
this.posy -= 10*Math.cos(this.face*Math.PI/180);
if(this.posx<0||this.posx>1000||this.posy<0||this.posy>400||win!=0){
this.visable=false;
}
//draw
if(this.visable==1){
var a1ctx=bg.getContext('2d');
a1ctx.beginPath();
a1ctx.moveTo(this.posx+15*Math.sin((this.face+5)*Math.PI/180),this.posy-15*Math.cos((this.face+5)*Math.PI/180));
a1ctx.lineTo(this.posx+15*Math.sin((this.face+175)*Math.PI/180),this.posy-15*Math.cos((this.face+175)*Math.PI/180));
a1ctx.lineTo(this.posx+15*Math.sin((this.face+185)*Math.PI/180),this.posy-15*Math.cos((this.face+185)*Math.PI/180));
a1ctx.lineTo(this.posx+15*Math.sin((this.face+355)*Math.PI/180),this.posy-15*Math.cos((this.face+355)*Math.PI/180));
a1ctx.closePath();
if(this.side==0) bomb.fillStyle='#FF4500';
else if(this.side==1) bomb.fillStyle='#0000FF';
a1ctx.fill();
this.point1x=this.posx+15*Math.sin(this.face*Math.PI/180);
this.point1y=this.posy-15*Math.cos(this.face*Math.PI/180);
this.point2x=this.posx-15*Math.sin(this.face*Math.PI/180);
this.point2y=this.posy+15*Math.cos(this.face*Math.PI/180);
}
//hit
if(this.side==0){
if(getDis(this.point1x,this.point1y,player2.point1x,player2.point1y) < 24*Math.sqrt(5)
&& getDis(this.point1x,this.point1y,player2.point2x,player2.point2y) < 24*Math.sqrt(5)
&& getDis(this.point1x,this.point1y,player2.point3x,player2.point3y) < 24*Math.sqrt(5)
&& this.visable==1){
this.visable=0;
this.posx=0; this.posy=0;
this.point1x=0; this.point1y=0;
this.point2x=0; this.point2y=0;
player2.health-=1;
}
}else if(this.side==1){
if(getDis(this.point1x,this.point1y,player1.point1x,player1.point1y) < 24*Math.sqrt(5)
&& getDis(this.point1x,this.point1y,player1.point2x,player1.point2y) < 24*Math.sqrt(5)
&& getDis(this.point1x,this.point1y,player1.point3x,player1.point3y) < 24*Math.sqrt(5)
&& this.visable==1){
this.visable=0;
this.posx=0; this.posy=0;
this.point1x=0; this.point1y=0;
this.point2x=0; this.point2y=0;
player1.health-=1;
}
}
}
//output
function drawplayer1(){
//player1 body
var p1ctx=bg.getContext('2d');
p1ctx.beginPath();
player1.point1x=player1.posx+24*Math.sin(player1.face*Math.PI/180);
player1.point1y=player1.posy-24*Math.cos(player1.face*Math.PI/180);
p1ctx.moveTo(player1.point1x,player1.point1y);
player1.point2x=player1.posx+24*Math.sqrt(2)*Math.sin((player1.face+135)*Math.PI/180);
player1.point2y=player1.posy-24*Math.sqrt(2)*Math.cos((player1.face+135)*Math.PI/180);
p1ctx.lineTo(player1.point2x,player1.point2y);
player1.point3x=player1.posx+24*Math.sqrt(2)*Math.sin((player1.face+225)*Math.PI/180);
player1.point3y=player1.posy-24*Math.sqrt(2)*Math.cos((player1.face+225)*Math.PI/180);
p1ctx.lineTo(player1.point3x,player1.point3y);
p1ctx.closePath();
p1ctx.fillStyle='#FF4500';
p1ctx.fill();
//player1 health
if(player1.health<3){
var p1ctx2=bg.getContext('2d');
p1ctx2.beginPath();
if(player1.health==2){
p1ctx.moveTo(player1.point1x,player1.point1y);
p1ctx.lineTo(player1.posx+8*Math.sqrt(2)*Math.sin((player1.face+45)*Math.PI/180),
player1.posy-8*Math.sqrt(2)*Math.cos((player1.face+45)*Math.PI/180));
p1ctx.lineTo(player1.posx+8*Math.sqrt(2)*Math.sin((player1.face+315)*Math.PI/180),
player1.posy-8*Math.sqrt(2)*Math.cos((player1.face+315)*Math.PI/180));
}
if(player1.health==1){
p1ctx.moveTo(player1.point1x,player1.point1y);
p1ctx.lineTo(player1.posx+8*Math.sqrt(5)*Math.sin((player1.face+90+26.6)*Math.PI/180),
player1.posy-8*Math.sqrt(5)*Math.cos((player1.face+90+26.6)*Math.PI/180));
p1ctx.lineTo(player1.posx+8*Math.sqrt(5)*Math.sin((player1.face+270-26.6)*Math.PI/180),
player1.posy-8*Math.sqrt(5)*Math.cos((player1.face+270-26.6)*Math.PI/180));
}
p1ctx2.closePath();
p1ctx2.fillStyle='#000000';
p1ctx2.fill();
}
}
function drawplayer2(){
//player2 body
var p2ctx=bg.getContext('2d');
p2ctx.beginPath();
player2.point1x=player2.posx+24*Math.sin(player2.face*Math.PI/180);
player2.point1y=player2.posy-24*Math.cos(player2.face*Math.PI/180);
p2ctx.moveTo(player2.point1x,player2.point1y);
player2.point2x=player2.posx+24*Math.sqrt(2)*Math.sin((player2.face+135)*Math.PI/180);
player2.point2y=player2.posy-24*Math.sqrt(2)*Math.cos((player2.face+135)*Math.PI/180);
p2ctx.lineTo(player2.point2x,player2.point2y);
player2.point3x=player2.posx+24*Math.sqrt(2)*Math.sin((player2.face+225)*Math.PI/180);
player2.point3y=player2.posy-24*Math.sqrt(2)*Math.cos((player2.face+225)*Math.PI/180);
p2ctx.lineTo(player2.point3x,player2.point3y);
p2ctx.closePath();
p2ctx.fillStyle='#0000FF';
p2ctx.fill();
//player2 health
if(player2.health<3){
var p2ctx2=bg.getContext('2d');
p2ctx2.beginPath();
if(player2.health==2){
p2ctx.moveTo(player2.point1x,player2.point1y);
p2ctx.lineTo(player2.posx+8*Math.sqrt(2)*Math.sin((player2.face+45)*Math.PI/180),
player2.posy-8*Math.sqrt(2)*Math.cos((player2.face+45)*Math.PI/180));
p2ctx.lineTo(player2.posx+8*Math.sqrt(2)*Math.sin((player2.face+315)*Math.PI/180),
player2.posy-8*Math.sqrt(2)*Math.cos((player2.face+315)*Math.PI/180));
}
if(player2.health==1){
p2ctx.moveTo(player2.point1x,player2.point1y);
p2ctx.lineTo(player2.posx+8*Math.sqrt(5)*Math.sin((player2.face+90+26.6)*Math.PI/180),
player2.posy-8*Math.sqrt(5)*Math.cos((player2.face+90+26.6)*Math.PI/180));
p2ctx.lineTo(player2.posx+8*Math.sqrt(5)*Math.sin((player2.face+270-26.6)*Math.PI/180),
player2.posy-8*Math.sqrt(5)*Math.cos((player2.face+270-26.6)*Math.PI/180));
}
p2ctx2.closePath();
p2ctx2.fillStyle='#000000';
p2ctx2.fill();
}
}
function drawbombs(){
for(var i=0;i<bombs.length;i++){
bombs[i].update();
}
}
function drawammos(){
for(var i=0;i<ammos.length;i++){
ammos[i].update();
}
}
function draw(){
drawbackground();
drawplayer1();
drawplayer2();
drawbombs();
drawammos();
drawbase();
}
//input
var map = {};
onkeydown = onkeyup = function check(e){
e = e || event;
map[e.keyCode] = e.type == 'keydown';
if(map[65]==true){left1=1;}//a
else {left1=0;}
if(map[68]==true){right1=1;}//d
else {right1=0;}
if(map[87]==true){shoot1=1;}//w
else {shoot1=0;}
if(map[74]==true){left2=1;}//j
else {left2=0;}
if(map[76]==true){right2=1;}//l
else {right2=0;}
if(map[73]==true){shoot2=1;}//i
else {shoot2=0;}
if(map[82]==true){reset=true;}//r
else {reset=false;}
}
//logic
var t1 = setInterval(logic, 20);
function handleinput(){
//change push
if(left1==1){player1.leftpush=2;}
else if(player1.leftpush>0){player1.leftpush -= 0.05;}
if(right1==1){player1.rightpush=2;}
else if(player1.rightpush>0){player1.rightpush -= 0.05;}
if(left2==1){player2.leftpush=2;}
else if(player2.leftpush>0){player2.leftpush -= 0.05;}
if(right2==1){player2.rightpush=2;}
else if(player2.rightpush>0){player2.rightpush -= 0.05;}
//player1 shoot
if(shoot1==1 && player1.shootdelay==0){
let new_ammo=new Ammo(0,player1.face,player1.posx,player1.posy);
ammos.push(new_ammo);
console.log(new_ammo);
player1.shootdelay=30;
}
else {
player1.shootdelay-=1;
if(player1.shootdelay < 0){player1.shootdelay=0;}
}
//player2 shoot
if(shoot2==1 && player2.shootdelay==0){
let new_ammo=new Ammo(1,player2.face,player2.posx,player2.posy);
ammos.push(new_ammo);
console.log(new_ammo);
player2.shootdelay=30;
}
else {
player2.shootdelay-=1;
if(player2.shootdelay < 0){player2.shootdelay=0;}
}
}
function movementOfPlayer(){
//player1
player1.face+=(player1.leftpush - player1.rightpush);
if(player1.face<0){player1.face+=360;}
if(player1.face>360){player1.face-=360;}
player1.posx += (player1.leftpush+player1.rightpush)*Math.sin(player1.face*Math.PI/180)*speedx;
player1.posy -= (player1.leftpush+player1.rightpush)*Math.cos(player1.face*Math.PI/180)*speedx;
if(player1.posx<0){player1.posx=0;}
if(player1.posy<0){player1.posy=0;}
if(player1.posx>1000){player1.posx=1000;}
if(player1.posy>400){player1.posy=400;}
//player2
player2.face+=(player2.leftpush - player2.rightpush);
if(player2.face<0){player2.face+=360;}
if(player2.face>360){player2.face-=360;}
player2.posx += (player2.leftpush+player2.rightpush)*Math.sin(player2.face*Math.PI/180)*speedx;
player2.posy -= (player2.leftpush+player2.rightpush)*Math.cos(player2.face*Math.PI/180)*speedx;
if(player2.posx<0){player2.posx=0;}
if(player2.posy<0){player2.posy=0;}
if(player2.posx>1000){player2.posx=1000;}
if(player2.posy>400){player2.posy=400;}
}
function tower_logic(){
//set towers direction
redtower_face=-Math.atan((player2.posx-112)/(player2.posy-125));
if (player2.posy-125<0){redtower_face+=Math.PI;}
bluetower_face=-Math.atan((player1.posx-888)/(player1.posy-275));
if (player1.posy-275<0){bluetower_face+=Math.PI;}
//turn on tower
if (player1.posx>mid_place){bluetower= true;}
else {bluetower= false;}
if (player2.posx<mid_place){redtower= true;}
else {redtower= false;}
bluetowerdelay-=1;
redtowerdelay-=1;
if(redtower==true && redtowerdelay<=0){
let new_bomb=new Bomb(0,redtower_face);
bombs.push(new_bomb);
console.log(new_bomb);
redtowerdelay=200;
}
if(bluetower==true && bluetowerdelay<=0){
let new_bomb=new Bomb(1,bluetower_face);
bombs.push(new_bomb);
console.log("hi2");
bluetowerdelay=200;
}
}
function checkdied(){
if(player1.health<=0){
player1.health=3;
player1.posx=player1.spawnx;
player1.posy=player1.spawny;
player1.face=90;
player2.score+=1;
mid_goal-=170;
}
if(player2.health<=0){
player2.health=3;
player2.posx=player2.spawnx;
player2.posy=player2.spawny;
player2.face=270;
player1.score+=1;
mid_goal+=170;
}
}
function checkwin(){
//player1 win
if(player1.score-player2.score>=3){
win=1;
//clearInterval(t1);
drawbackground();
var win1=bg.getContext('2d');
win1.font= "75px Times New Roman";
win1.fillStyle="#995555";
win1.textAlign= "center";
win1.fillText("!!!Player 1 win!!!",500,200);
var reset_text=bg.getContext('2d');
reset_text.font= "40px Times New Roman";
reset_text.fillStyle="#995555";
reset_text.textAlign= "center";
reset_text.fillText("Press 'r' to reset",500,300);
if(reset){
player1.score=0;
player1.health=3;
player1.posx=player1.spawnx;
player1.posy=player1.spawny;
player1.face=90;
player2.score=0;
player2.health=3;
player2.posx=player2.spawnx;
player2.posy=player2.spawny;
player2.face=270;
mid_place=500;
mid_goal=500;
win=0;
}
}
//player2.win
if(player2.score-player1.score>=3){
win=-1;
//clearInterval(t1);
drawbackground();
var win2=bg.getContext('2d');
win2.font= "75px Times New Roman";
win2.fillStyle="#555599";
win2.textAlign= "center";
win2.fillText("!!!Player 2 win!!!",500,200);
var reset_text=bg.getContext('2d');
reset_text.font= "40px Times New Roman";
reset_text.fillStyle="#555599";
reset_text.textAlign= "center";
reset_text.fillText("Press 'r' to reset",500,300);
if(reset){
player1.score=0;
player1.health=3;
player1.posx=player1.spawnx;
player1.posy=player1.spawny;
player1.face=90;
player2.score=0;
player2.health=3;
player2.posx=player2.spawnx;
player2.posy=player2.spawny;
player2.face=270;
mid_place=500;
mid_goal=500;
win=0;
}
}
}
function logic(){
handleinput();
movementOfPlayer();
tower_logic();
checkdied();
draw();
if(debugmode==1){
var x="";
x += redtower+' '+ bluetower;
document.getElementById("debug").innerHTML=x;
}
checkwin();
}
</script>
</body>
</html>