Arrows Defense Game

<!DOCTYPE html>
<html>
    <head>
    <title>Jeux Défense en JS | par MEZGANI SAID</title>
	<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
	<meta http-equiv="X-UA-Compatible" content="IE=edge">
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<meta name="keyword" content="Jeux Défense en JS">
	<meta name="author" content="Mezgani said">
	<meta name="copyright" content="NGLESSON">
	<link href="style.css" rel="stylesheet" type="text/css">
</head>
<body onresize='_pexresize()'>
	<canvas id="canvas"></canvas>
	<script type="text/javascript" src="script.js"></script>
</body>
</html>
body {background:#000000;margin:0;padding:0}
canvas {background:#ecf0f1;}
"use strict"
    var stage = {
        w:1280,
        h:720
    }

    var _pexcanvas = document.getElementById("canvas");
    _pexcanvas.width = stage.w;
    _pexcanvas.height = stage.h;
    var ctx = _pexcanvas.getContext("2d");

    var pointer = {
        x:0,
        y:0
    }

    var scale = 1;
    var portrait = true;
    var loffset = 0;
    var toffset = 0;
    var mxpos = 0;
    var mypos = 0;


// ------------------------------------------------------------------------------- Gamy
function drawArrow(fromx, fromy, tox, toy,lw,hlen,color) {
	var dx = tox - fromx;
	var dy = toy - fromy;
	var angle = Math.atan2(dy, dx);
	ctx.fillStyle=color;
	ctx.strokeStyle=color;
	ctx.lineCap = "round";
	ctx.lineWidth = lw;
	ctx.beginPath();
	ctx.moveTo(fromx, fromy);
	ctx.lineTo(tox, toy);
	ctx.stroke();
	ctx.beginPath();
	ctx.moveTo(tox, toy);
	ctx.lineTo(tox - hlen * Math.cos(angle - Math.PI / 6), toy - hlen * Math.sin(angle - Math.PI / 6));
	ctx.lineTo(tox - hlen * Math.cos(angle)/2, toy - hlen * Math.sin(angle)/2);
	ctx.lineTo(tox - hlen * Math.cos(angle + Math.PI / 6), toy - hlen * Math.sin(angle + Math.PI / 6));
	ctx.closePath();
	ctx.stroke();
	ctx.fill();
}

var colors = ['#1abc9c','#1abc9c','#3498db','#9b59b6','#34495e','#16a085','#27ae60','#2980b9','#8e44ad','#2c3e50','#f1c40f','#e67e22','#e74c3c','#95a5a6','#f39c12','#d35400','#c0392b','#bdc3c7','#7f8c8d'];

ctx.clearRect(0,0,stage.w,stage.h);
for (var i =0;i<200;i++) {
	var angle = Math.random()*Math.PI*2;
	var length = Math.random()*250+50;
	var myx=360+Math.sin(angle)*length;
	var myy=360-Math.cos(angle)*length;
	drawArrow(myx,myy,myx+length/6*Math.sin(angle),myy-length/6*Math.cos(angle),length/30,length/30,'#c0392b');
}
var explode = new Image();
explode.src = canvas.toDataURL("image/png");

ctx.clearRect(0,0,stage.w,stage.h);
for (var i =0;i<200;i++) {
	var angle = Math.random()*Math.PI-Math.PI/2;
	var length = Math.random()*480+50;
	var myx=stage.w/2+Math.sin(angle)*length;
	var myy=stage.h-Math.cos(angle)*length;
	drawArrow(myx,myy,myx+length/6*Math.sin(angle),myy-length/6*Math.cos(angle),length/30,length/30,'#2c3e50');
}
var explodeb = new Image();
explodeb.src = canvas.toDataURL("image/png");


ctx.clearRect(0,0,stage.w,stage.h);
ctx.fillStyle = "rgba(236,240,241,1)";
ctx.fillRect(0,0,stage.w,stage.h);
for (var i =0;i<200;i++) {
	var angle = Math.random()*Math.PI/Math.PI*180;
	var length = Math.random()*250+50;
	var myx=Math.random()*stage.w;
	var myy=Math.random()*stage.h;
	drawArrow(myx,myy,myx+length/6*Math.sin(angle),myy-length/6*Math.cos(angle),length/30,length/30,colors[Math.floor(Math.random()*colors.length)]);
}

ctx.fillStyle = "rgba(236,240,241,0.9)";
ctx.fillRect(0,0,stage.w,stage.h);
var back = new Image();
back.src = canvas.toDataURL("image/png");

var angle=0;
var ai = true;
var ait = 0;
var btm=0;
var bullets = [];

function Bullet() {
	this.x=stage.w/2-Math.sin(angle)*150;
	this.y=stage.h-Math.cos(angle)*150;
	this.r=angle;
}

var enemies = [];
function Enemy() {
	this.r = Math.random()*Math.PI/(2.5/2)-Math.PI/2.5;
	this.dis = Math.random()*1280+720;
	this.x=stage.w/2-Math.sin(this.r)*this.dis;
	this.y=stage.h-Math.cos(this.r)*this.dis;
}
for(var i=0;i<10;i++) {
	enemies.push(new Enemy());
  
	enemies[i].x += Math.sin(enemies[i].r)*300;
	enemies[i].y += Math.cos(enemies[i].r)*300;
}

var explosions = [];
function Explosion(x,y,ty) {
	this.x=x;
	this.y=y;
	this.t=30;
	this.ty=ty;
}

var eturn = 0;
var cold = [];
function enginestep() {

	ctx.drawImage(back,0,0);
	if (!ai&&ait<Date.now()-3000) {
		ai = true;
	}
	btm++;
	if(btm>8){
		btm=0;
		bullets.push(new Bullet());
	}
	
	for (var i=0;i<bullets.length;i++) {
		bullets[i].x -= Math.sin(bullets[i].r)*20;
		bullets[i].y -= Math.cos(bullets[i].r)*20;
		drawArrow(bullets[i].x+Math.sin(bullets[i].r)*50,bullets[i].y+Math.cos(bullets[i].r)*50,bullets[i].x,bullets[i].y,8,8,'#2980b9');
		if(bullets[i].x<-100||bullets[i].x>stage.w+100){
			bullets.splice(i,1);
		}
		if(bullets[i].y<-100||bullets[i].y>stage.h+100){
			bullets.splice(i,1);
		}
		
	}
	
	for(var i=0;i<enemies.length;i++) {
		enemies[i].x += Math.sin(enemies[i].r)*3;
		enemies[i].y += Math.cos(enemies[i].r)*3;
		drawArrow(enemies[i].x-Math.sin(enemies[i].r)*100,enemies[i].y-Math.cos(enemies[i].r)*100,enemies[i].x,enemies[i].y,15,15,"#c0392b");
		if (enemies[i].y>stage.h) {
			enemies[i] = new Enemy();
			explosions.push(new Explosion(stage.w/2,stage.h,2));
				shake = true;
				shaket=0;
		}
		for (var b=0;b<bullets.length;b++) {
			var dx = enemies[i].x-bullets[b].x;
			var dy = enemies[i].y-bullets[b].y;
			var dis = dx*dx+dy*dy;
			if (dis<20*20) {
				explosions.push(new Explosion(enemies[i].x,enemies[i].y,1));
				enemies[i] = new Enemy();
				bullets.splice(b,1);
			}
		}
	}
	
	if (ai) {
		for(var l=0;l<enemies.length;l++) {
			var dx = enemies[l].x-stage.w/2;
			var dy = enemies[l].y-stage.h;
			var dis = Math.floor(Math.sqrt(dx*dx+dy*dy));
			var val1 = 100000+dis;
			var val2 = 1000+l;
			cold[l]=val1+'x'+val2;
		}
		cold.sort();
		eturn = parseInt(cold[0].slice(8,11));
		if (parseInt(cold[0].slice(1,6))<800) {
			angle += (enemies[eturn].r-angle)/8;
		}
	} else {

		var dx = pointer.x-stage.w/2;
		var dy = pointer.y-stage.h;
		angle = Math.atan(dx/dy);
	}
	
	drawArrow(stage.w/2,stage.h,stage.w/2-Math.sin(angle)*150,stage.h-Math.cos(angle)*150,30,20,'#2c3e50');

	for(var e=0;e<explosions.length;e++) {
		if (explosions[e].ty==1) {
			var myimg = explode;
			ctx.globalAlpha=1-(explosions[e].t/stage.h);
			ctx.drawImage(myimg,explosions[e].x-explosions[e].t/2,explosions[e].y-explosions[e].t/2,explosions[e].t*stage.w/stage.h,explosions[e].t);
			ctx.globalAlpha=1;
		} else {
			var myimg = explodeb;
			ctx.globalAlpha=1-(explosions[e].t/stage.h);
			ctx.drawImage(myimg,explosions[e].x-explosions[e].t*stage.w/stage.h/2,stage.h-explosions[e].t,explosions[e].t*stage.w/stage.h,explosions[e].t);
			ctx.globalAlpha=1;
		}
	}

	for(var e=0;e<explosions.length;e++) {
		explosions[e].t += 20;
		if (explosions[e].t>stage.h) {
			explosions.splice(e,1);
		}
	}
}

// ------------------------------------------------------------------------------- events

function toggleFullScreen() {
	var doc = window.document;
	var docEl = doc.documentElement;

	var requestFullScreen = docEl.requestFullscreen || docEl.mozRequestFullScreen || docEl.webkitRequestFullScreen || docEl.msRequestFullscreen;
	var cancelFullScreen = doc.exitFullscreen || doc.mozCancelFullScreen || doc.webkitExitFullscreen || doc.msExitFullscreen;

	if(!doc.fullscreenElement && !doc.mozFullScreenElement && !doc.webkitFullscreenElement && !doc.msFullscreenElement) {
		requestFullScreen.call(docEl);

	}
	else {
		cancelFullScreen.call(doc);

	}
}


function motchstart(e) {
	mxpos = (e.pageX-loffset)*scale;
	mypos = (e.pageY-toffset)*scale;
}

function motchmove(e) {
	mxpos = (e.pageX-loffset)*scale;
	mypos = (e.pageY-toffset)*scale;
	pointer.x = mxpos;
	pointer.y = mypos;
	ai = false;
	ait = Date.now();
}

function motchend(e) {

}

window.addEventListener('mousedown', function(e) {
	motchstart(e);
}, false);
window.addEventListener('mousemove', function(e) {
	motchmove(e);
}, false);
window.addEventListener('mouseup', function(e) {
	motchend(e);
}, false);
window.addEventListener('touchstart', function(e) {
	e.preventDefault();
	motchstart(e.touches[0]);
}, false);
window.addEventListener('touchmove', function(e) {
	e.preventDefault();
	motchmove(e.touches[0]);
}, false);
window.addEventListener('touchend', function(e) {
	e.preventDefault();
	motchend(e.touches[0]);
}, false);


// ------------------------------------------------------------------------ stager
function _pexresize() {
	var cw = window.innerWidth;
	var ch = window.innerHeight;
	if (cw<=ch*stage.w/stage.h) {
		portrait = true;
		scale = stage.w/cw;
		loffset = 0;
		toffset = Math.floor(ch-(cw*stage.h/stage.w))/2;
		_pexcanvas.style.width = cw + "px";
		_pexcanvas.style.height = Math.floor(cw*stage.h/stage.w) + "px";
		_pexcanvas.style.marginLeft = loffset +"px";
		_pexcanvas.style.marginTop = toffset +"px";
	} else {
		scale = stage.h/ch;
		portrait = false;
		loffset = Math.floor(cw-(ch*stage.w/stage.h))/2;
		toffset = 0;
		_pexcanvas.style.height = ch + "px";
		_pexcanvas.style.width = Math.floor(ch*stage.w/stage.h) + "px";
		_pexcanvas.style.marginLeft = loffset +"px";
		_pexcanvas.style.marginTop = toffset +"px";
	}
}


window.requestAnimFrame = (function(){
	return  window.requestAnimationFrame       ||
	window.webkitRequestAnimationFrame ||
	window.mozRequestAnimationFrame    ||
	window.oRequestAnimationFrame      ||
	window.msRequestAnimationFrame     ||
	function( callback ){
		window.setTimeout(callback, 1000 / 60);
	};})();



	function sfps(iny) {
		return(Math.floor(smoothfps)/60*iny);
	}



	var timebomb=0;
	var lastCalledTime;
	var fpcount = 0;
	var fpall = 0;
	var smoothfps = 60;
	var thisfps = 60;
	function fpscounter() {
		timebomb ++;
		if (!lastCalledTime) {
			lastCalledTime = Date.now();
			return;
		}
		var delta = (Date.now()-lastCalledTime)/1000;
		lastCalledTime = Date.now();
		var fps = 1/delta;
		fpcount ++;
		fpall += fps;
		if (timebomb>30) {
			thisfps = parseInt(fpall/fpcount*10)/10;
			fpcount = 0;
			fpall = 0;
			timebomb = 0;
		}
	}

	var shake = false;
	var shaket = 0;
	function animated() {
		requestAnimFrame(animated);
		if (shake) {
			var trax = Math.random()*60-30;
			var tray = Math.random()*60-30;
			ctx.translate(trax,tray);
		}
		// fpscounter();
    //ctx.clearRect(0,0,_pexcanvas.width,_pexcanvas.height);
    enginestep()
    // ctx.fillStyle='#8e44ad';
    // ctx.font = "24px arial";

    // ctx.textAlign = "left"; 
    // ctx.fillText(thisfps,20,50);
    // smoothfps += (thisfps-smoothfps)/100;
    // ctx.fillText(cold[0].slice(1,6),20,80);
   //  ctx.beginPath();
   //  ctx.arc(pointer.x, pointer.y, 50, 0, Math.PI*2,false);
   // ctx.closePath();
   // ctx.fill();
   if (shake) {
   	ctx.translate(-trax,-tray);
   	shaket ++;
   	if (shaket>20) {
   		shaket=0;
   		shake=false;
   	}
   }
}

_pexresize();
animated();
Titre section avec une anmation style01

Titre section avec une anmation style01

Social Media Icons

Social Media Icons

Responsive image grid

Responsive image grid

Radio Input Image Checkbox 01

Radio Input Image Checkbox 01

Page construction avec compte à rebours style01

Page construction avec compte à rebours style01

Login Bootstrap3

Login Bootstrap3

Image hover 05

Image hover 05

Image hover 04

Image hover 04

Header Aside Footer Admin

Header Aside Footer Admin

Create icon animate with svg

Create icon animate with svg

Checkbox et boutons radios personnalisés en CSS

Checkbox et boutons radios personnalisés en CSS

Ajouter supprimer une tr dans une table

Ajouter supprimer une tr dans une table