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No:35679

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Shooting Game
Developer User16606｜Date and time 24/1/15 2:14:15
Build time 17.299 sec｜Game capacity 4.928KB｜

Script

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[PR]現在の売れ筋ゲームアプリランキング

Click here for free DL of the app version that can save data.

<!DOCTYPE html>
<html>
<head>
    <title>Shooting Game</title>
    <style>
        canvas {
            border: 1px solid black;
        }
    </style>
</head>
<body>
    <canvas id="gameCanvas" width="400" height="400"></canvas>

// Define player variables
        const playerSize = 50;
        let playerX = canvas.width / 2 - playerSize / 2;
        let playerY = canvas.height - playerSize;
        let isPlayerMovingLeft = false;
        let isPlayerMovingRight = false;

// Define bullet variables
        const bulletSize = 10;
        const bulletSpeed = 5;
        let bullets = [];

// Define enemy variables
        const enemySize = 50;
        let enemyX = Math.random() * (canvas.width - enemySize);
        let enemyY = 0;
        let isGameOver = false;

// Handle keyboard interactions
        document.addEventListener("keydown", function (event) {
            if (event.key === "ArrowLeft") {
                isPlayerMovingLeft = true;
            } else if (event.key === "ArrowRight") {
                isPlayerMovingRight = true;
            } else if (event.key === " ") {
                shootBullet();
            }
        });

// Move player left or right
        function movePlayer() {
            if (isPlayerMovingLeft && playerX > 0) {
                playerX -= 5;
            } else if (isPlayerMovingRight && playerX < canvas.width - playerSize) {
                playerX += 5;
            }
        }

// Shoot bullet from player
        function shootBullet() {
            const bulletX = playerX + playerSize / 2 - bulletSize / 2;
            const bulletY = playerY;
            bullets.push({ x: bulletX, y: bulletY });
        }

// Move bullets
        function moveBullets() {
            for (let i = 0; i < bullets.length; i++) {
                bullets[i].y -= bulletSpeed;
                if (bullets[i].y < 0) {
                    bullets.splice(i, 1);
                    i--;
                }
            }
        }

// Move enemy
        function moveEnemy() {
            enemyY += 3;
            if (enemyY >= canvas.height) {
                resetEnemy();
            }
        }

// Reset enemy position
        function resetEnemy() {
            enemyX = Math.random() * (canvas.width - enemySize);
            enemyY = 0;
        }

// Check collision between two objects
        function checkCollision(object1, object2) {
            if (object1.x < object2.x + object2.width &&
                object1.x + object1.width > object2.x &&
                object1.y < object2.y + object2.height &&
                object1.y + object1.height > object2.y) {
                return true;
            }
            return false;
        }

// Game loop
        function gameLoop() {
            if (!isGameOver) {
                context.clearRect(0, 0, canvas.width, canvas.height);

movePlayer();
                moveBullets();
                moveEnemy();

// Draw the player
                context.fillStyle = "blue";
                context.fillRect(playerX, playerY, playerSize, playerSize);

// Draw the bullets
                context.fillStyle = "red";
                for (let i = 0; i < bullets.length; i++) {
                    context.fillRect(bullets[i].x, bullets[i].y, bulletSize, bulletSize);
                }

// Draw the enemy
                context.fillStyle = "green";
                context.fillRect(enemyX, enemyY, enemySize, enemySize);

// Check collision between bullets and enemy
                for (let i = 0; i < bullets.length; i++) {
                    if (checkCollision(bullets[i], { x: enemyX, y: enemyY, width: enemySize, height: enemySize })) {
                        resetEnemy();
                        bullets.splice(i, 1);
                        i--;
                    }
                }

// Check collision between player and enemy
                if (checkCollision({ x: playerX, y: playerY, width: playerSize, height: playerSize },
                    { x: enemyX, y: enemyY, width: enemySize, height: enemySize })) {
                    isGameOver = true;
                    alert("Game Over!");
                    location.reload(); // Restart the game
                }

requestAnimationFrame(gameLoop);
            }
        }

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