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私はビデオゲームの作成に取り組んでいます。ボタンをクリックして次の画面に移動すると、ボタンが消えてしまいます。私は自分のhtmlとjsファイルを通してボタンの機能を設定することができますが、一度クリックすれば消える方法はわかりません。JavaScriptをクリックするとHTMLボタンが消えるようにする
私のHTMLコード：ここで
<html>
<head>
<title> Pong </title>
<link type = "text/css" href = "main.css" rel = "stylesheet">
</head>
<canvas id="gameCanvas" width="1350" height="600"></canvas>
<body>
<button id = 'easy_click' onclick="EasyChange()"> Easy </button>
<button id = 'int_change' onclick="intChange()"> Intermediate </button>
<button id = "hard_change" onclick="hardChange()"> Hard </button>
</body>
<script src = "functions.js"></script>
</html>
は、私のJSコードです：
var canvas;
var canvasContext;
var ballX = 50;
var ballY = 50;
var ballSpeedX = 20;
var ballSpeedY = 10
var menuScreen = false;
var name = "Developed by Jonah Johnson";
var player1Score = 0;
var player2Score = 0;
const WINNING_SCORE = 10;
var easybutton = "Easy";
var hardButton = "Hard";
var intButton = "Intermediate";
var diffLevelEasy = false;
var diffLevelMedium = true;
var diffLevelHard = false;
var showingWinScreen = true;
var paddle1Y = 250;
var paddle2Y = 250;
const PADDLE_THICKNESS = 10;
const PADDLE_HEIGHT = 100;
function calculateMousePos(evt) {
var rect = canvas.getBoundingClientRect();
var root = document.documentElement;
var mouseX = evt.clientX - rect.left - root.scrollLeft;
var mouseY = evt.clientY - rect.top - root.scrollTop;
return {
x:mouseX,
y:mouseY
};
}
//changing of difficulty
//easy changing
function EasyChange() {
diffLevelEasy = true;
diffLevelMedium = false;
diffLevelHard = false;
showingWinScreen = false;
}
function intChange() {
diffLevelEasy = false;
diffLevelMedium = true;
diffLevelHard = false;
showingWinScreen = false;
}
function hardChange() {
diffLevelEasy = false;
diffLevelMedium = false;
diffLevelHard = true;
showingWinScreen = false;
}
function handleMouseClick(evt) {
if(showingWinScreen) {
player1Score = 0;
player2Score = 0;
showingWinScreen = false;
}
}
// getting an easy medium
function handleMouseClick(evt) {
if(easybutton) {
diffLevelEasy = true;
diffLevelMedium = false;
diffLevelHard = false;
showingWinScreen = false;
}
}
//getting medium
function handleMouseClick(evt) {
if(intButton) {
diffLevelEasy = false;
diffLevelMedium = true;
diffLevelHard = false;
showingWinScreen = false;
}
}
//getting hard
function handleMouseClick(evt) {
if(hardButton) {
diffLevelEasy = false;
diffLevelMedium = false;
diffLevelHard = true;
showingWinScreen = false;
}
}
window.onload = function() {
canvas = document.getElementById('gameCanvas');
canvasContext = canvas.getContext('2d');
var framesPerSecond = 30;
setInterval(function() {
moveEverything();
drawEverything();
}, 1000/framesPerSecond);
canvas.addEventListener('mousedown', handleMouseClick);
canvas.addEventListener('mousemove',
function(evt) {
var mousePos = calculateMousePos(evt);
paddle1Y = mousePos.y - (PADDLE_HEIGHT/2);
});
}
function ballReset() {
if(player1Score >= WINNING_SCORE ||
player2Score >= WINNING_SCORE) {
showingWinScreen = true;
}
ballSpeedX = -ballSpeedX;
ballX = canvas.width/2;
ballY = canvas.height/2;
}
function computerMovement() {
/// ai movement
//easy
if(diffLevelEasy === true) {
var paddle2YCenter = paddle2Y + (PADDLE_HEIGHT/2);
if(paddle2YCenter < ballY - 35) {
paddle2Y = paddle2Y + 2;
} else if(paddle2YCenter > ballY + 35) {
paddle2Y = paddle2Y - 2;
}
}
//medium
else if(diffLevelMedium === true) {
var paddle2YCenter = paddle2Y + (PADDLE_HEIGHT/2);
if(paddle2YCenter < ballY - 35) {
paddle2Y = paddle2Y + 12;
} else if(paddle2YCenter > ballY + 35) {
paddle2Y = paddle2Y - 12;
}
}
//hard
else if(diffLevelHard === true) {
var paddle2YCenter = paddle2Y + (PADDLE_HEIGHT/2);
if(paddle2YCenter < ballY - 35) {
paddle2Y = paddle2Y + 18;
} else if(paddle2YCenter > ballY + 35) {
paddle2Y = paddle2Y - 18;
}
}
}
function moveEverything() {
if(showingWinScreen) { //showing win screen
return;
}
computerMovement();
ballX = ballX + ballSpeedX;
ballY = ballY + ballSpeedY;
if(ballX < 0) {
if(ballY > paddle1Y &&
ballY < paddle1Y+PADDLE_HEIGHT) {
ballSpeedX = -ballSpeedX;
var deltaY = ballY
-(paddle1Y+PADDLE_HEIGHT/2);
ballSpeedY = deltaY * 0.35;
} else {
player2Score++; // must be BEFORE ballReset()
ballReset();
}
}
if(ballX > canvas.width) {
if(ballY > paddle2Y &&
ballY < paddle2Y+PADDLE_HEIGHT) {
ballSpeedX = -ballSpeedX;
var deltaY = ballY
-(paddle2Y+PADDLE_HEIGHT/2);
ballSpeedY = deltaY * 0.35;
} else {
player1Score++; // must be BEFORE ballReset()
ballReset();
}
}
if(ballY < 0) {
ballSpeedY = -ballSpeedY;
}
if(ballY > canvas.height) {
ballSpeedY = -ballSpeedY;
}
}
function drawNet() {
for(var i=0;i<canvas.height;i+=40) {
colorRect(canvas.width/2-1,i,2,20,'white');
}
}
function drawEverything() {
// next line blanks out the screen with black
colorRect(0,0,canvas.width,canvas.height,'black');
if(showingWinScreen) {
canvasContext.fillStyle = 'white';
if(player1Score >= WINNING_SCORE) {
canvasContext.fillText("Left Player Won", 350, 200);
} else if(player2Score >= WINNING_SCORE) {
canvasContext.fillText("Right Player Won", 350, 200);
}
canvasContext.fillText("click to continue", 350, 500);
canvasContext.fillText("Difficulty:", 50, 50);
canvasContext.fillText(easybutton, 50, 100);
canvasContext.fillText(intButton, 50, 200);
canvasContext.fillText(hardButton, 50, 300);
return;
}
drawNet();
// this is left player paddle
colorRect(0,paddle1Y,PADDLE_THICKNESS,PADDLE_HEIGHT,'white');
// this is right computer paddle
colorRect(canvas.width-PADDLE_THICKNESS,paddle2Y,PADDLE_THICKNESS,PADDLE_HEIGHT,'white');
// next line draws the ball
colorCircle(ballX, ballY, 10, 'white');
canvasContext.fillText(player1Score, 100, 100);
canvasContext.fillText(player2Score, canvas.width-100, 100);
canvasContext.fillText(name, 100, 590);
}
function colorCircle(centerX, centerY, radius, drawColor) {
canvasContext.fillStyle = drawColor;
canvasContext.beginPath();
canvasContext.arc(centerX, centerY, radius, 0,Math.PI*2,true);
canvasContext.fill();
}
function colorRect(leftX,topY, width,height, drawColor) {
canvasContext.fillStyle = drawColor;
canvasContext.fillRect(leftX,topY, width,height);
}
//sets how hard the game is
if(diffLevel = diffLevelEasy) {
var paddle2YCenter = paddle2Y + (PADDLE_HEIGHT/2);
if(paddle2YCenter < ballY - 35) {
paddle2Y = paddle2Y + 2;
} else if(paddle2YCenter > ballY + 35) {
paddle2Y = paddle2Y - 2;
}
}
私はちょうどクリックしたときにボタンを削除しようとしていますので、私はそれをどのように行うのですか？
これを隠すようにCSSを設定しますか？ – epascarello