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📄 Viewing: ./../../../../584311.klas4s23.mid-ica.nl/public_html/gamecraft/gameJobScript.js

// Game Script goed here
const canvas = document.getElementById("gameCanvas");
const ctx = canvas.getContext("2d");

function resizeCanvas() {
    canvas.width = windowWidth;
    canvas.height = windowHeight;
  }

//block is player ship
const blockWidth = 50; 
const blockHeight = 50; 
let blockX = canvas.width / 2 - blockWidth / 2;
const blockY = canvas.height - blockHeight;

//circle is enemy ship
const circleRadius = 20;
let circles = []; 
const circleSpeed = 0.9; 

const bulletWidth = 5;
const bulletHeight = 10;
const bulletSpeed = 5;
let bullets = [];

let score = 0; 
let highScore = 0
let tempHighScore = getHighScoreFromCookie	(); 
highScore = Number(tempHighScore);

const keys = {};
document.addEventListener("keydown", (event) => {
    keys[event.key] = true;
});
document.addEventListener("keyup", (event) => {
    keys[event.key] = false;
});

let gameRunning = false;

function gameLoop() {
    if (!gameRunning) {
        return;
    }

    requestAnimationFrame(gameLoop);

    if (keys["ArrowLeft"] && blockX > 0) {
        blockX -= 3; 
    }
    if (keys["ArrowRight"] && blockX < canvas.width - blockWidth) {
        blockX += 3; 
    }

    circles.forEach((circle) => {
        if (circle.y + circleRadius > blockY && circle.y < blockY + blockHeight &&
            circle.x + circleRadius > blockX && circle.x < blockX + blockWidth) {
            gameOver();
        }
    });

    circles.forEach((circle) => {
        circle.y += circleSpeed;
        if (circle.y > canvas.height + circleRadius) {
            circle.x = Math.random() * (canvas.width - circleRadius * 2) + circleRadius;
            circle.y = -circleRadius;
        }
    });

    bullets.forEach((bullet) => {
        bullet.y -= bulletSpeed;
        if (bullet.y < 0) {
            bullets.splice(bullets.indexOf(bullet), 1);
        }

        circles.forEach((circle) => {
            if (bullet.x + bulletWidth > circle.x - circleRadius &&
                bullet.x < circle.x + circleRadius &&
                bullet.y + bulletHeight > circle.y - circleRadius &&
                bullet.y < circle.y + circleRadius) {
                bullets.splice(bullets.indexOf(bullet), 1);
                circles.splice(circles.indexOf(circle), 1);
                score += 1;
            }
        });
    });

    ctx.clearRect(0, 0, canvas.width, canvas.height);
    ctx.fillStyle = "white";

    const blockImage = new Image();
    blockImage.src = "image/mainship.png";
    ctx.drawImage(blockImage, blockX, blockY, blockWidth, blockHeight); 

    circles.forEach((circle) => {
        const circleImage = new Image();
        circleImage.src = "image/scout.png";
        ctx.drawImage(circleImage, circle.x - circleRadius, circle.y - circleRadius, circleRadius * 2, circleRadius * 2);
    });

    ctx.fillStyle = "orange";
    bullets.forEach((bullet) => {
        ctx.fillRect(bullet.x, bullet.y, bulletWidth, bulletHeight);
    });

    ctx.fillStyle = "white";
    ctx.font = "20px Arial";
    ctx.fillText("Score: " + score, 10, 30); 
    ctx.fillText("High Score: " + highScore, 10, 60); 
}

function gameOver() {
    gameRunning = false;
    document.getElementById("gameOverScreen").style.display = "flex";
    if (score > highScore) {
        highScore = score; 
        saveHighScoreToCookie(highScore);
    }
}

function restartGame() {
    blockX = canvas.width / 2 - blockWidth / 2;
    circles = []; 
    bullets = [];
    score = 0; 
    gameRunning = true;
    document.getElementById("gameOverScreen").style.display = "none";
    gameLoop();
}

function shoot() {
    const bulletX = blockX + blockWidth / 2 - bulletWidth / 2;
    const bulletY = blockY;
    bullets.push({ x: bulletX, y: bulletY });
}

document.addEventListener("keydown", (event) => {
    if (event.key === "ArrowUp") {
        shoot();
    }
});

const startButton = document.getElementById("startButton");
startButton.addEventListener("click", () => {
    gameRunning = true;
    document.getElementById("startScreen").style.display = "none";
    circles = []; 
    bullets = [];
    gameLoop();
});

const restartButton = document.getElementById("restartButton");
restartButton.addEventListener("click", restartGame);

function SpawnEnemy() {
    const circleX = Math.random() * (canvas.width - circleRadius * 2) + circleRadius;
    const circleY = -circleRadius;
    circles.push({ x: circleX, y: circleY });
}

const randomInterval = Math.random() * 1000 + 500; 
setInterval(SpawnEnemy, randomInterval);

function saveHighScoreToCookie(highScore) {
    document.cookie = `highScore=${highScore}`;
}

function getHighScoreFromCookie(cname = "highScore") {
    let name = cname + "=";
    let decodedCookie = decodeURIComponent(document.cookie);
    let ca = decodedCookie.split(';');
    for(let i = 0; i <ca.length; i++) {
      let c = ca[i];
      while (c.charAt(0) == ' ') {
        c = c.substring(1);
      }
      if (c.indexOf(name) == 0) {
        return c.substring(name.length, c.length);
      }
    }
    return "";
  }

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