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body { | |
background: #222; | |
color: #ddd; | |
white-space: pre; | |
font-family: monospace; | |
} | |
a { | |
color: #6482c8; | |
} |
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<html> | |
<body> | |
<canvas id="canvas" width="800" height="500"></canvas> | |
</body> | |
</html> |
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<html> | |
<body> | |
<canvas id="canvas" width="800" height="500"></canvas> | |
<script src="./pong.js"></script> | |
</body> | |
</html> |
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let ctx, p1_y, p2_y, p1_points, p2_points | |
const h=500, w=800, p_w=20, p_h=200, p1_x = 10, p2_x = w - p_w - 10 | |
function setup(){ | |
const canvas = document.getElementById("canvas") | |
ctx = canvas.getContext("2d") | |
// inicializa as posições y do p1 e do p2 para metade da tela | |
p1_y = p2_y = (h / 2) - (p_h/2) | |
// inicializa os pontos dos jogadores como 0 |
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let ball_y_orientation, ball_x_orientation, ball_x, ball_y | |
function initBall(){ | |
console.log(`${p1_points} VS ${p2_points}`) | |
ball_y_orientation = Math.pow(2, Math.floor( Math.random() * 2 )+1) - 3 | |
ball_x_orientation = Math.pow(2, Math.floor( Math.random() * 2 )+1) - 3 | |
ball_x = w / 2 -10 | |
ball_y = h / 2 -10 | |
} |
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let ctx, p1_y, p2_y, p1_points, p2_points | |
let ball_y_orientation, ball_x_orientation, ball_x, ball_y | |
const h=500, w=800, p_w=20, p_h=200, p1_x = 10, p2_x = w - p_w - 10 | |
function setup(){ | |
const canvas = document.getElementById("canvas") | |
ctx = canvas.getContext("2d") | |
// inicializa as posições y do p1 e do p2 para metade da tela | |
p1_y = p2_y = (h / 2) - (p_h/2) | |
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function drawRect(x,y,w,h,color="#fff"){ | |
ctx.fillStyle = color | |
ctx.fillRect(x,y,w,h) | |
ctx.fillStyle = "#000" | |
} |
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function draw(){ | |
// fundo | |
drawRect(0,0,w,h,"#000") | |
// player 1 | |
drawRect(p1_x, p1_y, p_w, p_h) | |
// player 2 | |
drawRect(p2_x, p2_y, p_w, p_h) | |
// barra lateral | |
drawRect(w/2 -5,0,5,h) | |
// bola |
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let ctx, p1_y, p2_y, p1_points, p2_points | |
let ball_y_orientation, ball_x_orientation, ball_x, ball_y | |
const h=500, w=800, p_w=20, p_h=200, p1_x = 10, p2_x = w - p_w - 10 | |
function setup(){ | |
const canvas = document.getElementById("canvas") | |
ctx = canvas.getContext("2d") | |
// inicializa as posições y do p1 e do p2 para metade da tela | |
p1_y = p2_y = (h / 2) - (p_h/2) | |
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let p1_key, p2_key | |
document.addEventListener("keydown",function(ev){ | |
// keyCode 87 = w, keycode 83 = s | |
if(ev.keyCode == 87 || ev.keyCode == 83){ | |
p1_key = ev.keyCode | |
} | |
// keycode 38 = arrowUp, keycode 40 = arrowDown | |
else if(ev.keyCode== 38 || ev.keyCode==40) | |
p2_key = ev.keyCode | |
}) |
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