在我们的javascript游戏中触发下一个级别?
我们正在为我们的学校制作一个游戏,它相当简单,但是,我们不知道如何让它触发下一个级别。目前,我们设置了一个按钮,当他们完成该级别时加载一个新页面,但显然,使用这种方法很容易作弊。我们想知道,当红点(字符)到达顶部框时,下一级将加载。我将发布级别一以供参考在我们的javascript游戏中触发下一个级别?,javascript,jquery,html,canvas,Javascript,Jquery,Html,Canvas,我们正在为我们的学校制作一个游戏,它相当简单,但是,我们不知道如何让它触发下一个级别。目前,我们设置了一个按钮,当他们完成该级别时加载一个新页面,但显然,使用这种方法很容易作弊。我们想知道,当红点(字符)到达顶部框时,下一级将加载。我将发布级别一以供参考 <html> <head> <style> canvas, img { display:block; margin:1em auto; border:1p
<html>
<head>
<style>
canvas, img {
display:block; margin:1em auto; border:1px solid black;
}
canvas {
background:url(Clouds.png);
}
</style>
</head>
<body>
<canvas id="canvas" style="border:1px solid #000"></canvas>
<script>
(function () {
var requestAnimationFrame = window.requestAnimationFrame || window.mozRequestAnimationFrame || window.webkitRequestAnimationFrame || window.msRequestAnimationFrame;
window.requestAnimationFrame = requestAnimationFrame;
})();
var canvas = document.getElementById("canvas"),
ctx = canvas.getContext("2d"),
width = 500,
height = 200,
player = {
x: width / 2,
y: height - 15,
width: 5,
height: 5,
speed: 3,
velX: 0,
velY: 0,
jumping: false,
grounded: false
},
keys = [],
friction = 0.8,
gravity = 0.3;
var boxes = [];
// dimensions
boxes.push({
x: 0,
y: 0,
width: 10,
height: height
});
boxes.push({
x: 0,
y: height - 2,
width: width,
height: 50
});
boxes.push({
x: width - 10,
y: 0,
width: 50,
height: height
});
boxes.push({
x: 120,
y: 10,
width: 80,
height: 80
});
boxes.push({
x: 170,
y: 50,
width: 80,
height: 80
});
boxes.push({
x: 220,
y: 100,
width: 80,
height: 80
});
boxes.push({
x: 270,
y: 150,
width: 40,
height: 40
});
canvas.width = width;
canvas.height = height;
function update() {
// check keys
if (keys[38] || keys[32] || keys[87]) {
// up arrow or space
if (!player.jumping && player.grounded) {
player.jumping = true;
player.grounded = false;
player.velY = -player.speed * 2;
}
}
if (keys[39] || keys[68]) {
// right arrow
if (player.velX < player.speed) {
player.velX++;
}
}
if (keys[37] || keys[65]) {
// left arrow
if (player.velX > -player.speed) {
player.velX--;
}
}
player.velX *= friction;
player.velY += gravity;
ctx.clearRect(0, 0, width, height);
ctx.fillStyle = "black";
ctx.beginPath();
player.grounded = false;
for (var i = 0; i < boxes.length; i++) {
ctx.rect(boxes[i].x, boxes[i].y, boxes[i].width, boxes[i].height);
var dir = colCheck(player, boxes[i]);
if (dir === "l" || dir === "r") {
player.velX = 0;
player.jumping = false;
} else if (dir === "b") {
player.grounded = true;
player.jumping = false;
} else if (dir === "t") {
player.velY *= -1;
}
}
if(player.grounded){
player.velY = 0;
}
player.x += player.velX;
player.y += player.velY;
ctx.fill();
ctx.fillStyle = "red";
ctx.fillRect(player.x, player.y, player.width, player.height);
requestAnimationFrame(update);
}
function colCheck(shapeA, shapeB) {
// get the vectors to check against
var vX = (shapeA.x + (shapeA.width / 2)) - (shapeB.x + (shapeB.width / 2)),
vY = (shapeA.y + (shapeA.height / 2)) - (shapeB.y + (shapeB.height / 2)),
// add the half widths and half heights of the objects
hWidths = (shapeA.width / 2) + (shapeB.width / 2),
hHeights = (shapeA.height / 2) + (shapeB.height / 2),
colDir = null;
// if the x and y vector are less than the half width or half height, they we must be inside the object, causing a collision
if (Math.abs(vX) < hWidths && Math.abs(vY) < hHeights) {
// figures out on which side we are colliding (top, bottom, left, or right)
var oX = hWidths - Math.abs(vX),
oY = hHeights - Math.abs(vY);
if (oX >= oY) {
if (vY > 0) {
colDir = "t";
shapeA.y += oY;
} else {
colDir = "b";
shapeA.y -= oY;
}
} else {
if (vX > 0) {
colDir = "l";
shapeA.x += oX;
} else {
colDir = "r";
shapeA.x -= oX;
}
}
}
return colDir;
}
document.body.addEventListener("keydown", function (e) {
keys[e.keyCode] = true;
});
document.body.addEventListener("keyup", function (e) {
keys[e.keyCode] = false;
});
window.addEventListener("load", function () {
update();
});
</script>
<br>
<center>
<input type="button" name="next" value="Click me when finished! No cheating! ;)" onclick="location.href='level2.html';">
</center>
<center>
<input type="button" name="restart" value="Restart" onclick="location.href='javagame.html';">
</center>
</body>
</html>
帆布{
显示:块;边距:1em自动;边框:1px纯黑;
}
画布{
背景:url(Clouds.png);
}
(功能(){
var requestAnimationFrame=window.requestAnimationFrame | | window.mozRequestAnimationFrame | | window.webkitRequestAnimationFrame | | window.msRequestAnimationFrame;
window.requestAnimationFrame=requestAnimationFrame;
})();
var canvas=document.getElementById(“canvas”),
ctx=canvas.getContext(“2d”),
宽度=500,
高度=200,
玩家={
x:宽度/2,
y:身高-15,
宽度:5,
身高:5,,
速度:3,,
velX:0,
结果:0,,
跳跃:错,
接地:错误
},
键=[],
摩擦力=0.8,
重力=0.3;
变量框=[];
//尺寸
推({
x:0,,
y:0,
宽度:10,
高度:高度
});
推({
x:0,,
y:高度-2,
宽度:宽度,
身高:50
});
推({
x:宽度-10,
y:0,
宽度:50,
高度:高度
});
推({
x:120,
y:10,
宽度:80,
身高:80
});
推({
x:170,
y:50,
宽度:80,
身高:80
});
推({
x:220,
y:100,
宽度:80,
身高:80
});
推({
x:270,
y:150,
宽度:40,
身高:40
});
画布宽度=宽度;
canvas.height=高度;
函数更新(){
//检查钥匙
如果(键[38]| |键[32]| |键[87]){
//向上箭头或空格
如果(!player.jumping&&player.grounded){
player.jumping=true;
player.grounded=false;
player.velY=-player.speed*2;
}
}
如果(键[39]| |键[68]){
//右箭头
如果(player.velX-player.speed){
player.velX--;
}
}
player.velX*=摩擦力;
player.velY+=重力;
ctx.clearRect(0,0,宽度,高度);
ctx.fillStyle=“黑色”;
ctx.beginPath();
player.grounded=false;
对于(变量i=0;i=oY){
如果(vY>0){
colDir=“t”;
形状a.y+=oY;
}否则{
colDir=“b”;
shapeA.y-=oY;
}
}否则{
如果(vX>0){
colDir=“l”;
shapeA.x+=oX;
}否则{
colDir=“r”;
shapeA.x-=oX;
}
}
}
返回colDir;
}
document.body.addEventListener(“向下键控”,函数(e){
键[e.keyCode]=真;
});
文件.正文.附录列表(“键控”,功能(e){
密钥[e.keyCode]=假;
});
addEventListener(“加载”,函数(){
更新();
});
在更新功能中,您可以添加逻辑,检查播放器是否处于与您的完成条件匹配的位置。然后在条件集location.href='level2.html'
我假设条件是使用colCheck函数,将player和top框作为参数,并寻找一个特定的返回值,这对您来说是一个需要完成的练习。要移动到下一个级别的常规代码如下所示:
if(playerReachedFinish()) {
location.href = 'level2.html';
}
当然,一旦用户看到下一个级别被称为
level2.html
,就不会有任何东西阻止他们直接在浏览器中输入level3.html
,level4.html
,等等。我不认为有任何100%可靠的方法可以防止人们在javascript游戏中作弊,但拥有一个页面,随着用户的进步加载每个级别的数据可能是朝着正确方向迈出的一步。