ENGLISH REINFORCEMENT FOR PRIMARY

let gameState = 'start'; let paddle_1 = document.querySelector('.paddle_1'); let paddle_2 = document.querySelector('.paddle_2'); let board = document.querySelector('.board'); let initial_ball = document.querySelector('.ball'); let ball = document.querySelector('.ball'); let score_1 = document.querySelector('.player_1_score'); let score_2 = document.querySelector('.player_2_score'); let message = document.querySelector('.message'); let paddle_1_coord = paddle_1.getBoundingClientRect(); let paddle_2_coord = paddle_2.getBoundingClientRect(); let initial_ball_coord = ball.getBoundingClientRect(); let ball_coord = initial_ball_coord; let board_coord = board.getBoundingClientRect(); let paddle_common = document.querySelector('.paddle').getBoundingClientRect(); let dx = Math.floor(Math.random() * 4) + 3; let dy = Math.floor(Math.random() * 4) + 3; let dxd = Math.floor(Math.random() * 2); let dyd = Math.floor(Math.random() * 2); document.addEventListener('keydown', (e) => { if (e.key == 'Enter') { gameState = gameState == 'start' ? 'play' : 'start'; if (gameState == 'play') { message.innerHTML = 'Game Started'; message.style.left = 42 + 'vw'; requestAnimationFrame(() => { dx = Math.floor(Math.random() * 4) + 3; dy = Math.floor(Math.random() * 4) + 3; dxd = Math.floor(Math.random() * 2); dyd = Math.floor(Math.random() * 2); moveBall(dx, dy, dxd, dyd); }); } } if (gameState == 'play') { if (e.key == 'w') { paddle_1.style.top = Math.max( board_coord.top, paddle_1_coord.top - window.innerHeight * 0.06 ) + 'px'; paddle_1_coord = paddle_1.getBoundingClientRect(); } if (e.key == 's') { paddle_1.style.top = Math.min( board_coord.bottom - paddle_common.height, paddle_1_coord.top + window.innerHeight * 0.06 ) + 'px'; paddle_1_coord = paddle_1.getBoundingClientRect(); } if (e.key == 'ArrowUp') { paddle_2.style.top = Math.max( board_coord.top, paddle_2_coord.top - window.innerHeight * 0.1 ) + 'px'; paddle_2_coord = paddle_2.getBoundingClientRect(); } if (e.key == 'ArrowDown') { paddle_2.style.top = Math.min( board_coord.bottom - paddle_common.height, paddle_2_coord.top + window.innerHeight * 0.1 ) + 'px'; paddle_2_coord = paddle_2.getBoundingClientRect(); } } }); function moveBall(dx, dy, dxd, dyd) { if (ball_coord.top <= board_coord.top) { dyd = 1; } if (ball_coord.bottom >= board_coord.bottom) { dyd = 0; } if ( ball_coord.left <= paddle_1_coord.right && ball_coord.top >= paddle_1_coord.top && ball_coord.bottom <= paddle_1_coord.bottom ) { dxd = 1; dx = Math.floor(Math.random() * 4) + 3; dy = Math.floor(Math.random() * 4) + 3; } if ( ball_coord.right >= paddle_2_coord.left && ball_coord.top >= paddle_2_coord.top && ball_coord.bottom <= paddle_2_coord.bottom ) { dxd = 0; dx = Math.floor(Math.random() * 4) + 3; dy = Math.floor(Math.random() * 4) + 3; } if ( ball_coord.left <= board_coord.left || ball_coord.right >= board_coord.right ) { if (ball_coord.left <= board_coord.left) { score_2.innerHTML = +score_2.innerHTML + 1; } else { score_1.innerHTML = +score_1.innerHTML + 1; } gameState = 'start'; ball_coord = initial_ball_coord; ball.style = initial_ball.style; message.innerHTML = 'Press Enter to Play Pong'; message.style.left = 38 + 'vw'; return; } ball.style.top = ball_coord.top + dy * (dyd == 0 ? -1 : 1) + 'px'; ball.style.left = ball_coord.left + dx * (dxd == 0 ? -1 : 1) + 'px'; ball_coord = ball.getBoundingClientRect(); requestAnimationFrame(() => { moveBall(dx, dy, dxd, dyd); }); }