diff --git a/.vscode/settings.json b/.vscode/settings.json new file mode 100644 index 0000000..5b06ac3 --- /dev/null +++ b/.vscode/settings.json @@ -0,0 +1,3 @@ +{ + "liveServer.settings.port": 5506 +} \ No newline at end of file diff --git a/index.html b/index.html index d80d77c..639d71f 100644 --- a/index.html +++ b/index.html @@ -37,7 +37,9 @@

Game Over

+ + diff --git a/js/game.js b/js/game.js index af4789c..961ec45 100644 --- a/js/game.js +++ b/js/game.js @@ -1,3 +1,105 @@ class Game { - // code to be added -} \ No newline at end of file + constructor() { + this.startScreen = document.getElementById("game-intro"); + this.gameScreen = document.getElementById("game-screen"); + this.gameEndScreen = document.getElementById("game-end"); + this.player = new Player( + this.gameScreen, + 200, + 500, + 100, + 150, + "./images/car.png" + ); + this.height = 600; + this.width = 500; + this.obstacles = []; + this.score = 0; + this.lives = 3; + this.gameIsOver = false; + this.gameIntervalId; + this.gameLoopFrequency = Math.round(1000 / 60); + } + // code to be added + start() { + this.gameScreen.style.height = `${this.height}px`; + this.gameScreen.style.width = `${this.width}px`; + + //Hide Start screen + this.startScreen.style.display = "none"; + + //show game screen + this.gameScreen.style.display = "block"; + + this.gameIntervalId = setInterval(() => { + this.gameLoop(); + }, this.gameLoopFrequency); + } + + gameLoop() { + console.log("in the game loop"); + this.update(); + if (this.gameIsOver) { + clearInterval(this.gameIntervalId); + } + } + + update() { + let livesTag = document.getElementById("lives"); + livesTag.innerText = this.lives; + this.player.move(); + + // Check for collision and if an obstacle is still on the screen + for (let i = 0; i < this.obstacles.length; i++) { + const obstacle = this.obstacles[i]; + obstacle.move(); + + // If the player's car collides with an obstacle + if (this.player.didCollide(obstacle)) { + // Remove the obstacle element from the DOM + obstacle.element.remove(); + // Remove obstacle object from the array + this.obstacles.splice(i, 1); + // Reduce player's lives by 1 + this.lives--; + // Update the counter variable to account for the removed obstacle + i--; + } // If the obstacle is off the screen (at the bottom) + else if (obstacle.top > this.height) { + // Increase the score by 1 + this.score++; + + // Remove the obstacle from the DOM + obstacle.element.remove(); + // Remove obstacle object from the array + this.obstacles.splice(i, 1); + // Update the counter variable to account for the removed obstacle + i--; + } + } + + // If the lives are 0, end the game + if (this.lives === 0) { + this.endGame(); + } + + // Create a new obstacle based on a random probability + // when there is no other obstacles on the screen + if (Math.random() > 0.98 && this.obstacles.length < 1) { + this.obstacles.push(new Obstacle(this.gameScreen)); + } + } + + // Create a new method responsible for ending the game + endGame() { + this.player.element.remove(); + this.obstacles.forEach((obstacle) => obstacle.element.remove()); + + this.gameIsOver = true; + + // Hide game screen + this.gameScreen.style.display = "none"; + // Show end game screen + this.gameEndScreen.style.display = "block"; + } +} diff --git a/js/obstacle.js b/js/obstacle.js new file mode 100644 index 0000000..3753c6d --- /dev/null +++ b/js/obstacle.js @@ -0,0 +1,31 @@ +class Obstacle { + constructor(gameScreen) { + this.gameScreen = gameScreen; + this.left = Math.floor(Math.random() * 300 + 70); + this.top = 0; + this.width = 100; + this.height = 150; + this.element = document.createElement("img"); + this.element.src = "./images/redCar.png"; + this.element.style.position = "absolute"; + this.element.style.width = `${this.width}px`; + this.element.style.height = `${this.height}px`; + this.element.style.left = `${this.left}px`; + this.element.style.top = `${this.top}px`; + + this.gameScreen.appendChild(this.element); + } + + updatePosition() { + // Update the obstacle's position based on the properties left and top + this.element.style.left = `${this.left}px`; + this.element.style.top = `${this.top}px`; + } + + move() { + // Move the obstacle down by 3px + this.top += 3; + // Update the obstacle's position on the screen + this.updatePosition(); + } +} diff --git a/js/player.js b/js/player.js new file mode 100644 index 0000000..b6f914c --- /dev/null +++ b/js/player.js @@ -0,0 +1,65 @@ +class Player { + constructor(gameScreen, left, top, width, height, imgSrc) { + this.gameScreen = gameScreen; + this.left = left; + this.top = top; + this.width = width; + this.height = height; + this.directionX = 0; + this.directionY = 0; + this.element = document.createElement("img"); + this.element.src = imgSrc; + this.element.style.position = "absolute"; + this.element.style.height = `${height}px`; + this.element.style.width = `${width}px`; + this.element.style.left = `${left}px`; + this.element.style.top = `${top}px`; + + this.gameScreen.appendChild(this.element); + } + + move() { + this.left += this.directionX; + this.top += this.directionY; + if (this.left < 10) { + this.left = 10; + } + + if (this.top < 10) { + this.top = 10; + } + + //handles right hand side + if (this.left > this.gameScreen.offsetWidth - this.width - 10) { + this.top = this.gameScreen.offsetWidth - this.width - 10; + } + + //handles bottom + if (this.top > this.gameScreen.offsetHeight - this.height - 10) { + this.top = this.gameScreen.offsetHeight - this.height - 10; + } + + this.updatePosition(); + } + + updatePosition() { + this.element.style.left = `${this.left}px`; + this.element.style.top = `${this.top}px`; + } + + didCollide(obstacle) { + const playerRect = this.element.getBoundingClientRect(); + const obstacleRect = obstacle.element.getBoundingClientRect(); + + if ( + playerRect.left < obstacleRect.right && + playerRect.right > obstacleRect.left && + playerRect.top < obstacleRect.bottom && + playerRect.bottom > obstacleRect.top + ) { + return true; + } else { + return false; + } + } +} diff --git a/js/script.js b/js/script.js index 95e544f..adc2b70 100644 --- a/js/script.js +++ b/js/script.js @@ -1,6 +1,10 @@ window.onload = function () { const startButton = document.getElementById("start-button"); const restartButton = document.getElementById("restart-button"); + const livesTag = document.getElementById("lives"); + //livesTag.innerText = game.lives; + + let game; startButton.addEventListener("click", function () { startGame(); @@ -8,5 +12,50 @@ window.onload = function () { function startGame() { console.log("start game"); + game = new Game(); + game.start(); + } + + function handleKeydown(event) { + const key = event.key; + const possibleKeystrokes = [ + "ArrowLeft", + "ArrowUp", + "ArrowRight", + "ArrowDown", + ]; + + if (possibleKeystrokes.includes(key)) { + event.preventDefault(); + + // Update player's directionX and directionY based on the key pressed + switch (key) { + case "ArrowLeft": + game.player.directionX = -3; + break; + case "ArrowUp": + game.player.directionY = -3; + break; + case "ArrowRight": + game.player.directionX = 3; + break; + case "ArrowDown": + game.player.directionY = 3; + break; + } + } + } + + // Add the handleKeydown function as an event listener for the keydown event + window.addEventListener("keydown", handleKeydown); + + restartButton.addEventListener("click", function () { + // Call the restartGame function when the button is clicked + restartGame(); + }); + + // The function that reloads the page to start a new game + function restartGame() { + location.reload(); } };