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|
window.onload = function()
{
var canvas = document.getElementById("canvas");
var ctx = canvas.getContext("2d");
var Scrolling = new Image ();
Scrolling.src = "test_scrolling.PNG";
var posX = 0;
var posY = 0;
var posY2 = -711;
function drawBG(){
ctx.drawImage(Scrolling, posX, posY);
ctx.drawImage(Scrolling, posX, posY2);
if (posY > 711) {
posY = -711;
}
if (posY2 > 711) {
posY2 = -711;
}
posY += 2;
posY2 += 2;
};
var arrowLeft = 81; //q
var arrowRight = 68; //d
var shoot = 32;
var shots = [];
var tir = false;
var score =0;
var shotsEnemies = [];
var listeEnemies = [];
var goRight = false;
var goLeft = false;
var vLeft = false;
var vRight = false;
var imageVaisseau = new Image();
imageVaisseau.src = "Spaceship_Spritesheet.png";
var bullet = new Image();
bullet.src = "Sprite_Bullets.png";
var invader = new Image();
invader.src = "Vaisseau_neutre.png";
var compteurG = 0;
var compteurD = 0;
window.addEventListener("keydown", function (e) {
if (e.keyCode === shoot) {
tir = true;
setTimeout(function () {
tir = false;}, 250);
}
});
window.addEventListener("keyup", function (e) {
if (e.keyCode === shoot) {
tir = false;
}
});
var Perso =
{
init : function (x, y, largeur, hauteur,vitesseL,vitesseR)
{
this.x = x;
this.y = y;
this.largeur = largeur;
this.hauteur = hauteur;
this.vitesseL = vitesseL;
this.vitesseR = vitesseR;
},
draw : function ()
{
if (goLeft === false && goRight === false) {
ctx.drawImage(imageVaisseau, 10, 7, 95, 96, this.x, this.y, this.largeur, this.hauteur);
};
if (goLeft === true && compteurG <=19) {
ctx.drawImage(imageVaisseau, 123, 7, 95, 96, this.x, this.y, this.largeur, this.hauteur);
};
if (goLeft === true && compteurG >= 20 && compteurG <= 99 ) {
ctx.drawImage(imageVaisseau, 236, 7, 95, 96, this.x, this.y, this.largeur, this.hauteur);
};
if (goLeft === true && compteurG >= 100) {
ctx.drawImage(imageVaisseau, 349, 7, 95, 96, this.x, this.y, this.largeur, this.hauteur);
};
if (goRight === true && compteurD <= 19) {
ctx.drawImage(imageVaisseau, 123, 121, 95, 96, this.x, this.y, this.largeur, this.hauteur);
};
if (goRight === true && compteurD >= 20 && compteurD <= 99) {
ctx.drawImage(imageVaisseau, 236, 121, 95, 96, this.x, this.y, this.largeur, this.hauteur);
};
if (goRight === true && compteurD >= 100) {
ctx.drawImage(imageVaisseau, 349, 121, 95, 96, this.x, this.y, this.largeur, this.hauteur);
};
},
inp : function ()
{
window.addEventListener("keydown", function (e) {
if (e.keyCode === arrowLeft) {
goLeft = true;
goRight = false;
}
if (e.keyCode === arrowRight) {
goLeft = false;
goRight = true;
}
});
window.addEventListener("keyup", function (e) {
if (e.keyCode === arrowLeft) {
goLeft = false;
vLeft = true;
}
if (e.keyCode === arrowRight) {
goRight = false;
vRight = true;
}
});
},
dep : function ()
{
if (goLeft === true && this.x > 5)
{
vRight = false;
this.x += -4 ;
}
if (goRight === true && this.x <canvas.width - this.largeur - 5)
{
vLeft = false;
this.x += 4 ;
}
if (vLeft === true && this.x > 5)
{
this.x += (this.vitesseL *= 0.94);
this.vitesseR = 4;
}
if (vRight === true && this.x <canvas.width - this.largeur - 5)
{
this.x += (this.vitesseR *= 0.94);
this.vitesseL = -4;
}
},
};
var Player = Object.create(Perso);
Player.init(canvas.width/2 - 35,350, 95, 98,-3,3);
function Shot(x,y,dx,dy){
this.x = x;
this.y = y ;
this.dx = dx;
this.dy = dy;
}
Shot.prototype.display = function () {
ctx.drawImage(bullet, 0, 0, 12, 29, this.x, this.y, this.dx, this.dy);
this.y -= 5;
};
function Enemies( x, y, dx, dy, v, type){
this.x = x;
this.y = y;
this.dx = dx;
this.dy = dy;
this.v = v;
this.type = type;
};
Enemies.prototype.display = function (){
ctx.drawImage(invader, 0, 0, 128, 128, this.x, this.y, this.dx, this.dy);
if (this.type === "horz"){
this.x += this.v;
};
if (this.type === "vert"){
this.y += this.v;
};
};
function ShotEnemies(x,y,dx,dy, cx,cy, angle){
this.x = x;
this.y = y ;
this.dx = dx;
this.dy = dy;
this.cx = cx;
this.cy = cy
this.angle = angle;
}
ShotEnemies.prototype.display = function () {
ctx.drawImage(bullet, 0, 0, 12, 29, this.x, this.y, this.dx, this.dy);
}
ShotEnemies.prototype.mouv = function () {
this.angle = Math.atan2(this.cy - this.y, this.cx - this.x );
this.angle *= (180/Math.PI);
var frameRate = 1/60;
var speed = 175;
var velocityX = Math.cos((this.angle) * Math.PI / 180) * (speed * frameRate);
var velocityY = Math.sin((this.angle) * Math.PI / 180) * (speed * frameRate);
this.x += velocityX;
this.y += velocityY;
};
Enemies.prototype.Tir = function (){
var cx = Player.x + Player.largeur/2 ;
var cy = Player.y + Player.hauteur/2;
var chance = 5;
if(chance > Math.random()*2000) {
listeEnemies.forEach(function (Enemies) {
shotsEnemies.push(new ShotEnemies(Enemies.x + Enemies.dx/2, Enemies.y + Enemies.dy/2, 12, 29, cx, cy));
});
};
};
function vague(){
listeEnemies.push(new Enemies(0 - 100, Math.random()*canvas.height/2, 50, 40, 2, "horz"));
listeEnemies.push(new Enemies(0 - 100, Math.random()*canvas.height/2, 50, 40, 2, "horz"));
listeEnemies.push(new Enemies(Math.random()*canvas.width, 0 - 100, 50, 40, 2, "vert"));
listeEnemies.push(new Enemies(Math.random()*canvas.width, 0 - 100, 50, 40, 2, "vert"));
if ( score > 500) {
listeEnemies.push(new Enemies(0 - 100, Math.random()*canvas.height/2, 50, 40, 2, "horz"));
listeEnemies.push(new Enemies(Math.random()*canvas.width, 0 - 100, 50, 40, 2, "vert"));
};
};
vague();
function animer()
{
ctx.clearRect(0, 0, canvas.width, canvas.height);
drawBG();
Player.draw();
Player.inp();
Player.dep();
drawHUD();
if (goLeft === false && goRight === false) {
compteurG = 0
compteurD = 0
};
if (goLeft === true){
compteurG ++
compteurD = 0
};
if (goRight === true){
compteurD ++
compteurG = 0
};
if (tir === true) {
shots.push(new Shot(Player.x + Player.largeur/2 , Player.y, 12, 29));
};
for(var j = 0; j< shotsEnemies.length; j++){
var shotE = shotsEnemies[j];
if (shotE.x > 0 && shotE.y < canvas.height){
shotE.display();
shotE.mouv();
} else {
shotsEnemies.splice(j--, 1);
};
if (shotE.x >= Player.x
&& shotE.x < Player.x + Player.largeur
&& shotE.y >= Player.y
&& shotE.y < Player.y + Player.hauteur ){
shotsEnemies.splice(j--, 1);
};
};
for(var i = 0; i< shots.length; i++){
var shot = shots[i];
if(i % 10 === 0){
if (shot.x >= 0 && shot.y > 0){
shot.display();
} else {
shots.splice(i--, 10)
};
};
};
if(listeEnemies.length < 1){
vague();
};
for (var o = 0; o < listeEnemies.length; o++){
var ho = listeEnemies[o];
ho.display();
ho.Tir();
if(ho.x > canvas.width || ho.y > canvas.height){
listeEnemies.splice(o--, 1);
};
};
for (var o = 0; o < listeEnemies.length; o++){
var ho = listeEnemies[o];
var bang = false;
for(var i = 0; i< shots.length; i++){
var shot = shots[i];
if( shot.x >= ho.x
&& shot.x < ho.x + ho.dx
&& shot.y >= ho.y
&& shot.y < ho.y + ho.dy)
{
bang = true;
shots.splice(i--, 10);
score += 100;
};
};
if (bang){
listeEnemies.splice (o--,1);
};
};
requestAnimationFrame(animer);
};
requestAnimationFrame(animer);
}; |
Diriger les tirs adversaires vers le joueur
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