Circles and squares shooting out projectiles And other things appear And they home in at it's game

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No:44816

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Circles and squares shooting out projectiles And o..ALL
Developer User19470｜Date and time 24/2/19 6:35:09
Build time 10.88 sec｜Game capacity 3.34KB｜

Script

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[PR]現在の売れ筋アプリランキング

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<!DOCTYPE html>
<html>
<head>
    <title>Projectile Shooter Game</title>
</head>
<body>
    <canvas id="gameCanvas" width="400" height="400"></canvas>
    <script>
        const canvas = document.getElementById('gameCanvas');
        const ctx = canvas.getContext('2d');

const player = {
            x: canvas.width / 2,
            y: canvas.height / 2,
            radius: 20,
            speed: 5
        };

const projectiles = [];
        const enemies = [];

function drawPlayer() {
            ctx.fillStyle = 'blue';
            ctx.beginPath();
            ctx.arc(player.x, player.y, player.radius, 0, Math.PI * 2);
            ctx.fill();
        }

function drawProjectiles() {
            projectiles.forEach(projectile => {
                ctx.fillStyle = 'red';
                ctx.fillRect(projectile.x, projectile.y, 10, 10);
            });
        }

function drawEnemies() {
            enemies.forEach(enemy => {
                ctx.fillStyle = 'green';
                ctx.beginPath();
                ctx.arc(enemy.x, enemy.y, enemy.radius, 0, Math.PI * 2);
                ctx.fill();
            });
        }

function moveProjectiles() {
            projectiles.forEach(projectile => {
                projectile.x += 5;
            });
        }

function moveEnemies() {
            enemies.forEach(enemy => {
                const dx = player.x - enemy.x;
                const dy = player.y - enemy.y;
                const angle = Math.atan2(dy, dx);
                enemy.x += Math.cos(angle) * 2;
                enemy.y += Math.sin(angle) * 2;
            });
        }

function spawnEnemies() {
            const radius = 15;
            const x = Math.random() < 0.5 ? 0 - radius : canvas.width + radius;
            const y = Math.random() * canvas.height;
            const angle = Math.atan2(player.y - y, player.x - x);
            enemies.push({ x, y, radius, angle });
        }

function update() {
            ctx.clearRect(0, 0, canvas.width, canvas.height);

drawPlayer();
            moveProjectiles();
            drawProjectiles();
            moveEnemies();
            drawEnemies();
            spawnEnemies();
            collisionDetection();

requestAnimationFrame(update);
        }

update();
    </script>
</body>
</html>