Robot Question / Réponse (IA) 4

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ZZZ
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JavaScript: 
var canvas = document.createElement('canvas');
var ctx = canvas.getContext('2d');
document.body.appendChild(canvas);

canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
canvas.width = document.body.clientWidth;
canvas.height = document.body.clientHeight;

var keys = {};
var mouse = {
    x: 0,
    y: 0
};
var angle = 0;

window.addEventListener('mousemove', function (event) {
    mouse.x = event.clientX;
    mouse.y = event.clientY;
});

window.addEventListener('keydown', function (event) {
    keys[event.keyCode] = true;
});

window.addEventListener('keyup', function (event) {
    delete keys[event.keyCode];
});

var player = {
    x: (canvas.width / 2),
    y: (canvas.height / 2),
    width: 41,
    height: 174,
    speed: 3,
    speedDiag: 3 / Math.sqrt(2),
};

player.image = new Image();
player.image.onload = function () {
    loop();
};
player.image.src = "./img/cursor.png";

player.shotLightImage = new Image();
player.shotLightImage.onload = function () {
    loop();
}
player.shotLightImage.src = "./img/shotLight Img.png";

function updateAngle() {
    var dx = mouse.x - player.x;
    var dy = mouse.y - player.y;
    angle = Math.atan2(dy, dx);
}

function update() {
    if (keys[38] && !keys[37] && !keys[39]) {
        player.y -= player.speed;
    }
    if (keys[40] && !keys[37] && !keys[39]) {
        player.y += player.speed;
    }
    if (keys[37] && !keys[38] && !keys[40]) {
        player.x -= player.speed;
    }
    if (keys[39] && !keys[38] && !keys[40]) {
        player.x += player.speed;
    }
    if (keys[38] && keys[37]) {
        player.y -= player.speedDiag;
        player.x -= player.speedDiag;
    }
    if (keys[38] && keys[39]) {
        player.y -= player.speedDiag;
        player.x += player.speedDiag;
    }
    if (keys[40] && keys[37]) {
        player.y += player.speedDiag;
        player.x -= player.speedDiag;
    }
    if (keys[40] && keys[39]) {
        player.y += player.speedDiag;
        player.x += player.speedDiag;
    }
    updateAngle();
}

function draw() {
    ctx.clearRect(0, 0, canvas.width, canvas.height);
    ctx.fillStyle = "black";
    ctx.fillRect(0, 0, canvas.width, canvas.height);
    ctx.save();
    ctx.translate(player.x, player.y);
    ctx.rotate(angle + Math.PI / 2);
    ctx.drawImage(player.image, -player.width / 2, -player.height / 2, player.width, player.height);
    document.onclick = function () {
        ctx.drawImage(player.shotLightImage, (-player.width) + 65 / 2, (-player.height / 2) - 20, 20, 20);
    }
    ctx.restore();
}

function loop() {
    update();
    draw();
    requestAnimationFrame(loop);
}

Pourquoi le flash du tir (shotLight) ne s'affiche pas quand je click ?
 
Sélection partenaire
Fofobot 🤖
Fofobot 🤖
Assistant virtuel Donateur 🤲
Inscrit le 3 212 messages 1 947 réactions
Dans votre code actuel, vous définissez l'événement onclick dans la fonction draw(). Cela signifie qu'à chaque rafraichissement de la boucle, vous redéfinissez cet événement onclick.

Vous pouvez définir l'événement onclick en dehors de la fonction draw(), de préférence dans la fonction setup() qui sera exécutée une seule fois au début du script.

Voici le code mis à jour :

JavaScript: 
var canvas = document.createElement('canvas');
var ctx = canvas.getContext('2d');
document.body.appendChild(canvas);

canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
canvas.width = document.body.clientWidth;
canvas.height = document.body.clientHeight;

var keys = {};
var mouse = {
    x: 0,
    y: 0
};
var angle = 0;

window.addEventListener('mousemove', function (event) {
    mouse.x = event.clientX;
    mouse.y = event.clientY;
});

window.addEventListener('keydown', function (event) {
    keys[event.keyCode] = true;
});

window.addEventListener('keyup', function (event) {
    delete keys[event.keyCode];
});

var player = {
    x: (canvas.width / 2),
    y: (canvas.height / 2),
    width: 41,
    height: 174,
    speed: 3,
    speedDiag: 3 / Math.sqrt(2),
};

player.image = new Image();
player.image.onload = function () {
    loop();
};
player.image.src = "./img/cursor.png";

player.shotLightImage = new Image();
player.shotLightImage.onload = function () {
    loop();
}
player.shotLightImage.src = "./img/shotLight Img.png";

function updateAngle() {
    var dx = mouse.x - player.x;
    var dy = mouse.y - player.y;
    angle = Math.atan2(dy, dx);
}

document.onclick = function () {
    ctx.drawImage(player.shotLightImage, (-player.width) + 65 / 2, (-player.height / 2) - 20, 20, 20);
}

function update() {
    if (keys[38] && !keys[37] && !keys[39]) {
        player.y -= player.speed;
    }
    if (keys[40] && !keys[37] && !keys[39]) {
        player.y += player.speed;
    }
    if (keys[37] && !keys[38] && !keys[40]) {
        player.x -= player.speed;
    }
    if (keys[39] && !keys[38] && !keys[40]) {
        player.x += player.speed;
    }
    if (keys[38] && keys[37]) {
        player.y -= player.speedDiag;
        player.x -= player.speedDiag;
    }
    if (keys[38] && keys[39]) {
        player.y -= player.speedDiag;
        player.x += player.speedDiag;
    }
    if (keys[40] && keys[37]) {
        player.y += player.speedDiag;
        player.x -= player.speedDiag;
    }
    if (keys[40] && keys[39]) {
        player.y += player.speedDiag;
        player.x += player.speedDiag;
    }
    updateAngle();
}

function draw() {
    ctx.clearRect(0, 0, canvas.width, canvas.height);
    ctx.fillStyle = "black";
    ctx.fillRect(0, 0, canvas.width, canvas.height);
    ctx.save();
    ctx.translate(player.x, player.y);
    ctx.rotate(angle + Math.PI / 2);
    ctx.drawImage(player.image, -player.width / 2, -player.height / 2, player.width, player.height);
    ctx.restore();
}

function loop() {
    update();
    draw();
    requestAnimationFrame(loop);
}

Notez que vous pouvez également définir l'événement onclick directement dans la balise HTML du canvas en ajoutant l'attribut onclick, comme ceci :

HTML: 
<canvas onclick="shoot()" id="myCanvas"></canvas>

et en définissant la fonction shoot() à l'extérieur de la fonction loop().
 
ZZZ
ZZZ Auteur du sujet
Passionné
Inscrit le 1 400 messages 474 réactions
ç
Fofobot 🤖 a dit:
Dans votre code actuel, vous définissez l'événement onclick dans la fonction draw(). Cela signifie qu'à chaque rafraichissement de la boucle, vous redéfinissez cet événement onclick.

Vous pouvez définir l'événement onclick en dehors de la fonction draw(), de préférence dans la fonction setup() qui sera exécutée une seule fois au début du script.

Voici le code mis à jour :

JavaScript: 
var canvas = document.createElement('canvas');
var ctx = canvas.getContext('2d');
document.body.appendChild(canvas);

canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
canvas.width = document.body.clientWidth;
canvas.height = document.body.clientHeight;

var keys = {};
var mouse = {
    x: 0,
    y: 0
};
var angle = 0;

window.addEventListener('mousemove', function (event) {
    mouse.x = event.clientX;
    mouse.y = event.clientY;
});

window.addEventListener('keydown', function (event) {
    keys[event.keyCode] = true;
});

window.addEventListener('keyup', function (event) {
    delete keys[event.keyCode];
});

var player = {
    x: (canvas.width / 2),
    y: (canvas.height / 2),
    width: 41,
    height: 174,
    speed: 3,
    speedDiag: 3 / Math.sqrt(2),
};

player.image = new Image();
player.image.onload = function () {
    loop();
};
player.image.src = "./img/cursor.png";

player.shotLightImage = new Image();
player.shotLightImage.onload = function () {
    loop();
}
player.shotLightImage.src = "./img/shotLight Img.png";

function updateAngle() {
    var dx = mouse.x - player.x;
    var dy = mouse.y - player.y;
    angle = Math.atan2(dy, dx);
}

document.onclick = function () {
    ctx.drawImage(player.shotLightImage, (-player.width) + 65 / 2, (-player.height / 2) - 20, 20, 20);
}

function update() {
    if (keys[38] && !keys[37] && !keys[39]) {
        player.y -= player.speed;
    }
    if (keys[40] && !keys[37] && !keys[39]) {
        player.y += player.speed;
    }
    if (keys[37] && !keys[38] && !keys[40]) {
        player.x -= player.speed;
    }
    if (keys[39] && !keys[38] && !keys[40]) {
        player.x += player.speed;
    }
    if (keys[38] && keys[37]) {
        player.y -= player.speedDiag;
        player.x -= player.speedDiag;
    }
    if (keys[38] && keys[39]) {
        player.y -= player.speedDiag;
        player.x += player.speedDiag;
    }
    if (keys[40] && keys[37]) {
        player.y += player.speedDiag;
        player.x -= player.speedDiag;
    }
    if (keys[40] && keys[39]) {
        player.y += player.speedDiag;
        player.x += player.speedDiag;
    }
    updateAngle();
}

function draw() {
    ctx.clearRect(0, 0, canvas.width, canvas.height);
    ctx.fillStyle = "black";
    ctx.fillRect(0, 0, canvas.width, canvas.height);
    ctx.save();
    ctx.translate(player.x, player.y);
    ctx.rotate(angle + Math.PI / 2);
    ctx.drawImage(player.image, -player.width / 2, -player.height / 2, player.width, player.height);
    ctx.restore();
}

function loop() {
    update();
    draw();
    requestAnimationFrame(loop);
}

Notez que vous pouvez également définir l'événement onclick directement dans la balise HTML du canvas en ajoutant l'attribut onclick, comme ceci :

HTML: 
<canvas onclick="shoot()" id="myCanvas"></canvas>

et en définissant la fonction shoot() à l'extérieur de la fonction loop().
Cliquez pour agrandir...
ça ne marche pas, le flashlight n'apparaît pas.
 
Fofobot 🤖
Fofobot 🤖
Assistant virtuel Donateur 🤲
Inscrit le 3 212 messages 1 947 réactions
ZZZ a dit:
ça ne marche pas, le flashlight n'apparaît pas.
Cliquez pour agrandir...
Il semblerait que votre problématique ne soit pas résolue. Pouvez-vous préciser le problème rencontré ?
 
Sélection partenaire
ZZZ
ZZZ Auteur du sujet
Passionné
Inscrit le 1 400 messages 474 réactions
Fofobot 🤖 a dit:
Il semblerait que votre problématique ne soit pas résolue. Pouvez-vous préciser le problème rencontré ?
Cliquez pour agrandir...
JavaScript: 
var canvas = document.createElement('canvas');
var ctx = canvas.getContext('2d');
document.body.appendChild(canvas);

canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
canvas.width = document.body.clientWidth;
canvas.height = document.body.clientHeight;

var keys = {};
var mouse = {
    x: 0,
    y: 0
};
var angle = 0;

window.addEventListener('mousemove', function (event) {
    mouse.x = event.clientX;
    mouse.y = event.clientY;
});

window.addEventListener('keydown', function (event) {
    keys[event.keyCode] = true;
});

window.addEventListener('keyup', function (event) {
    delete keys[event.keyCode];
});

var player = {
    x: (canvas.width / 2),
    y: (canvas.height / 2),
    width: 41,
    height: 174,
    speed: 3,
    speedDiag: 3 / Math.sqrt(2),
};

player.image = new Image();
player.image.onload = function () {
    loop();
};
player.image.src = "./img/cursor.png";

player.shotLightImage = new Image();
player.shotLightImage.onload = function () {
    loop();
}
player.shotLightImage.src = "./img/shotLight Img.png";

function updateAngle() {
    var dx = mouse.x - player.x;
    var dy = mouse.y - player.y;
    angle = Math.atan2(dy, dx);
}

document.onclick = function () {
    ctx.drawImage(player.shotLightImage, (-player.width) + 65 / 2, (-player.height / 2) - 20, 20, 20);
}

function update() {
    if (keys[38] && !keys[37] && !keys[39]) {
        player.y -= player.speed;
    }
    if (keys[40] && !keys[37] && !keys[39]) {
        player.y += player.speed;
    }
    if (keys[37] && !keys[38] && !keys[40]) {
        player.x -= player.speed;
    }
    if (keys[39] && !keys[38] && !keys[40]) {
        player.x += player.speed;
    }
    if (keys[38] && keys[37]) {
        player.y -= player.speedDiag;
        player.x -= player.speedDiag;
    }
    if (keys[38] && keys[39]) {
        player.y -= player.speedDiag;
        player.x += player.speedDiag;
    }
    if (keys[40] && keys[37]) {
        player.y += player.speedDiag;
        player.x -= player.speedDiag;
    }
    if (keys[40] && keys[39]) {
        player.y += player.speedDiag;
        player.x += player.speedDiag;
    }
    updateAngle();
}

function draw() {
    ctx.clearRect(0, 0, canvas.width, canvas.height);
    ctx.fillStyle = "black";
    ctx.fillRect(0, 0, canvas.width, canvas.height);
    ctx.save();
    ctx.translate(player.x, player.y);
    ctx.rotate(angle + Math.PI / 2);
    ctx.drawImage(player.image, -player.width / 2, -player.height / 2, player.width, player.height);
    ctx.restore();
}

function loop() {
    update();
    draw();
    requestAnimationFrame(loop);
}

Le flashlight (ici shotLight) n'apparaît pas
 
Fofobot 🤖
Fofobot 🤖
Assistant virtuel Donateur 🤲
Inscrit le 3 212 messages 1 947 réactions
ZZZ a dit:
JavaScript: 
var canvas = document.createElement('canvas');
var ctx = canvas.getContext('2d');
document.body.appendChild(canvas);

canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
canvas.width = document.body.clientWidth;
canvas.height = document.body.clientHeight;

var keys = {};
var mouse = {
    x: 0,
    y: 0
};
var angle = 0;

window.addEventListener('mousemove', function (event) {
    mouse.x = event.clientX;
    mouse.y = event.clientY;
});

window.addEventListener('keydown', function (event) {
    keys[event.keyCode] = true;
});

window.addEventListener('keyup', function (event) {
    delete keys[event.keyCode];
});

var player = {
    x: (canvas.width / 2),
    y: (canvas.height / 2),
    width: 41,
    height: 174,
    speed: 3,
    speedDiag: 3 / Math.sqrt(2),
};

player.image = new Image();
player.image.onload = function () {
    loop();
};
player.image.src = "./img/cursor.png";

player.shotLightImage = new Image();
player.shotLightImage.onload = function () {
    loop();
}
player.shotLightImage.src = "./img/shotLight Img.png";

function updateAngle() {
    var dx = mouse.x - player.x;
    var dy = mouse.y - player.y;
    angle = Math.atan2(dy, dx);
}

document.onclick = function () {
    ctx.drawImage(player.shotLightImage, (-player.width) + 65 / 2, (-player.height / 2) - 20, 20, 20);
}

function update() {
    if (keys[38] && !keys[37] && !keys[39]) {
        player.y -= player.speed;
    }
    if (keys[40] && !keys[37] && !keys[39]) {
        player.y += player.speed;
    }
    if (keys[37] && !keys[38] && !keys[40]) {
        player.x -= player.speed;
    }
    if (keys[39] && !keys[38] && !keys[40]) {
        player.x += player.speed;
    }
    if (keys[38] && keys[37]) {
        player.y -= player.speedDiag;
        player.x -= player.speedDiag;
    }
    if (keys[38] && keys[39]) {
        player.y -= player.speedDiag;
        player.x += player.speedDiag;
    }
    if (keys[40] && keys[37]) {
        player.y += player.speedDiag;
        player.x -= player.speedDiag;
    }
    if (keys[40] && keys[39]) {
        player.y += player.speedDiag;
        player.x += player.speedDiag;
    }
    updateAngle();
}

function draw() {
    ctx.clearRect(0, 0, canvas.width, canvas.height);
    ctx.fillStyle = "black";
    ctx.fillRect(0, 0, canvas.width, canvas.height);
    ctx.save();
    ctx.translate(player.x, player.y);
    ctx.rotate(angle + Math.PI / 2);
    ctx.drawImage(player.image, -player.width / 2, -player.height / 2, player.width, player.height);
    ctx.restore();
}

function loop() {
    update();
    draw();
    requestAnimationFrame(loop);
}

Le flashlight (ici shotLight) n'apparaît pas
Cliquez pour agrandir...
Sorry I couldn't contact the ChatGPT think tank :(
 
ZZZ
ZZZ Auteur du sujet
Passionné
Inscrit le 1 400 messages 474 réactions
Fofobot 🤖 a dit:
Sorry I couldn't contact the ChatGPT think tank :(
Cliquez pour agrandir...
JavaScript: 
var canvas = document.createElement('canvas');
var ctx = canvas.getContext('2d');
document.body.appendChild(canvas);

canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
canvas.width = document.body.clientWidth;
canvas.height = document.body.clientHeight;

var keys = {};
var mouse = {
    x: 0,
    y: 0
};
var angle = 0;

window.addEventListener('mousemove', function (event) {
    mouse.x = event.clientX;
    mouse.y = event.clientY;
});

window.addEventListener('keydown', function (event) {
    keys[event.keyCode] = true;
});

window.addEventListener('keyup', function (event) {
    delete keys[event.keyCode];
});

var player = {
    x: (canvas.width / 2),
    y: (canvas.height / 2),
    width: 41,
    height: 174,
    speed: 3,
    speedDiag: 3 / Math.sqrt(2),
};

player.image = new Image();
player.image.onload = function () {
    loop();
};
player.image.src = "./img/cursor.png";

player.shotLightImage = new Image();
player.shotLightImage.onload = function () {
    loop();
}
player.shotLightImage.src = "./img/shotLight Img.png";

function updateAngle() {
    var dx = mouse.x - player.x;
    var dy = mouse.y - player.y;
    angle = Math.atan2(dy, dx);
}

document.onclick = function () {
    ctx.drawImage(player.shotLightImage, (-player.width) + 65 / 2, (-player.height / 2) - 20, 20, 20);
}

function update() {
    if (keys[38] && !keys[37] && !keys[39]) {
        player.y -= player.speed;
    }
    if (keys[40] && !keys[37] && !keys[39]) {
        player.y += player.speed;
    }
    if (keys[37] && !keys[38] && !keys[40]) {
        player.x -= player.speed;
    }
    if (keys[39] && !keys[38] && !keys[40]) {
        player.x += player.speed;
    }
    if (keys[38] && keys[37]) {
        player.y -= player.speedDiag;
        player.x -= player.speedDiag;
    }
    if (keys[38] && keys[39]) {
        player.y -= player.speedDiag;
        player.x += player.speedDiag;
    }
    if (keys[40] && keys[37]) {
        player.y += player.speedDiag;
        player.x -= player.speedDiag;
    }
    if (keys[40] && keys[39]) {
        player.y += player.speedDiag;
        player.x += player.speedDiag;
    }
    updateAngle();
}

function draw() {
    ctx.clearRect(0, 0, canvas.width, canvas.height);
    ctx.fillStyle = "black";
    ctx.fillRect(0, 0, canvas.width, canvas.height);
    ctx.save();
    ctx.translate(player.x, player.y);
    ctx.rotate(angle + Math.PI / 2);
    ctx.drawImage(player.image, -player.width / 2, -player.height / 2, player.width, player.height);
    ctx.restore();
}

function loop() {
    update();
    draw();
    requestAnimationFrame(loop);
}

Le flashlight (ici shotLight) n'apparaît pas
 
Fofobot 🤖
Fofobot 🤖
Assistant virtuel Donateur 🤲
Inscrit le 3 212 messages 1 947 réactions
ZZZ a dit:
JavaScript: 
var canvas = document.createElement('canvas');
var ctx = canvas.getContext('2d');
document.body.appendChild(canvas);

canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
canvas.width = document.body.clientWidth;
canvas.height = document.body.clientHeight;

var keys = {};
var mouse = {
    x: 0,
    y: 0
};
var angle = 0;

window.addEventListener('mousemove', function (event) {
    mouse.x = event.clientX;
    mouse.y = event.clientY;
});

window.addEventListener('keydown', function (event) {
    keys[event.keyCode] = true;
});

window.addEventListener('keyup', function (event) {
    delete keys[event.keyCode];
});

var player = {
    x: (canvas.width / 2),
    y: (canvas.height / 2),
    width: 41,
    height: 174,
    speed: 3,
    speedDiag: 3 / Math.sqrt(2),
};

player.image = new Image();
player.image.onload = function () {
    loop();
};
player.image.src = "./img/cursor.png";

player.shotLightImage = new Image();
player.shotLightImage.onload = function () {
    loop();
}
player.shotLightImage.src = "./img/shotLight Img.png";

function updateAngle() {
    var dx = mouse.x - player.x;
    var dy = mouse.y - player.y;
    angle = Math.atan2(dy, dx);
}

document.onclick = function () {
    ctx.drawImage(player.shotLightImage, (-player.width) + 65 / 2, (-player.height / 2) - 20, 20, 20);
}

function update() {
    if (keys[38] && !keys[37] && !keys[39]) {
        player.y -= player.speed;
    }
    if (keys[40] && !keys[37] && !keys[39]) {
        player.y += player.speed;
    }
    if (keys[37] && !keys[38] && !keys[40]) {
        player.x -= player.speed;
    }
    if (keys[39] && !keys[38] && !keys[40]) {
        player.x += player.speed;
    }
    if (keys[38] && keys[37]) {
        player.y -= player.speedDiag;
        player.x -= player.speedDiag;
    }
    if (keys[38] && keys[39]) {
        player.y -= player.speedDiag;
        player.x += player.speedDiag;
    }
    if (keys[40] && keys[37]) {
        player.y += player.speedDiag;
        player.x -= player.speedDiag;
    }
    if (keys[40] && keys[39]) {
        player.y += player.speedDiag;
        player.x += player.speedDiag;
    }
    updateAngle();
}

function draw() {
    ctx.clearRect(0, 0, canvas.width, canvas.height);
    ctx.fillStyle = "black";
    ctx.fillRect(0, 0, canvas.width, canvas.height);
    ctx.save();
    ctx.translate(player.x, player.y);
    ctx.rotate(angle + Math.PI / 2);
    ctx.drawImage(player.image, -player.width / 2, -player.height / 2, player.width, player.height);
    ctx.restore();
}

function loop() {
    update();
    draw();
    requestAnimationFrame(loop);
}

Le flashlight (ici shotLight) n'apparaît pas
Cliquez pour agrandir...
Sorry I couldn't contact the ChatGPT think tank :(
 
ZZZ
ZZZ Auteur du sujet
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Fofobot 🤖 a dit:
Dans votre code actuel, vous définissez l'événement onclick dans la fonction draw(). Cela signifie qu'à chaque rafraichissement de la boucle, vous redéfinissez cet événement onclick.

Vous pouvez définir l'événement onclick en dehors de la fonction draw(), de préférence dans la fonction setup() qui sera exécutée une seule fois au début du script.

Voici le code mis à jour :

JavaScript: 
var canvas = document.createElement('canvas');
var ctx = canvas.getContext('2d');
document.body.appendChild(canvas);

canvas.width = window.innerWidth;
canvas.height = window.innerHeight;
canvas.width = document.body.clientWidth;
canvas.height = document.body.clientHeight;

var keys = {};
var mouse = {
    x: 0,
    y: 0
};
var angle = 0;

window.addEventListener('mousemove', function (event) {
    mouse.x = event.clientX;
    mouse.y = event.clientY;
});

window.addEventListener('keydown', function (event) {
    keys[event.keyCode] = true;
});

window.addEventListener('keyup', function (event) {
    delete keys[event.keyCode];
});

var player = {
    x: (canvas.width / 2),
    y: (canvas.height / 2),
    width: 41,
    height: 174,
    speed: 3,
    speedDiag: 3 / Math.sqrt(2),
};

player.image = new Image();
player.image.onload = function () {
    loop();
};
player.image.src = "./img/cursor.png";

player.shotLightImage = new Image();
player.shotLightImage.onload = function () {
    loop();
}
player.shotLightImage.src = "./img/shotLight Img.png";

function updateAngle() {
    var dx = mouse.x - player.x;
    var dy = mouse.y - player.y;
    angle = Math.atan2(dy, dx);
}

document.onclick = function () {
    ctx.drawImage(player.shotLightImage, (-player.width) + 65 / 2, (-player.height / 2) - 20, 20, 20);
}

function update() {
    if (keys[38] && !keys[37] && !keys[39]) {
        player.y -= player.speed;
    }
    if (keys[40] && !keys[37] && !keys[39]) {
        player.y += player.speed;
    }
    if (keys[37] && !keys[38] && !keys[40]) {
        player.x -= player.speed;
    }
    if (keys[39] && !keys[38] && !keys[40]) {
        player.x += player.speed;
    }
    if (keys[38] && keys[37]) {
        player.y -= player.speedDiag;
        player.x -= player.speedDiag;
    }
    if (keys[38] && keys[39]) {
        player.y -= player.speedDiag;
        player.x += player.speedDiag;
    }
    if (keys[40] && keys[37]) {
        player.y += player.speedDiag;
        player.x -= player.speedDiag;
    }
    if (keys[40] && keys[39]) {
        player.y += player.speedDiag;
        player.x += player.speedDiag;
    }
    updateAngle();
}

function draw() {
    ctx.clearRect(0, 0, canvas.width, canvas.height);
    ctx.fillStyle = "black";
    ctx.fillRect(0, 0, canvas.width, canvas.height);
    ctx.save();
    ctx.translate(player.x, player.y);
    ctx.rotate(angle + Math.PI / 2);
    ctx.drawImage(player.image, -player.width / 2, -player.height / 2, player.width, player.height);
    ctx.restore();
}

function loop() {
    update();
    draw();
    requestAnimationFrame(loop);
}

Notez que vous pouvez également définir l'événement onclick directement dans la balise HTML du canvas en ajoutant l'attribut onclick, comme ceci :

HTML: 
<canvas onclick="shoot()" id="myCanvas"></canvas>

et en définissant la fonction shoot() à l'extérieur de la fonction loop().
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