小游戏 “简单版”

chenyiyun · 发表于 2022-2-26 10:59:07

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<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>game</title>
<style>
body {
background: #222;
}
h2 {
color: #666;
font-family: monospace;
text-align: center;
}
.background {
table-layout: fixed;
border-spacing: 0;
}
.background td {
padding: 0;
}
.lava, .actor {
background: #e55;
}
.lava{
border: solid 3px #e70;
box-sizing: content-box;
}
.wall {
background: #444;
border: solid 3px #333;
box-sizing: content-box;
}
.actor {
position: absolute;
}
.coin {
background: #e2e838;
border-radius: 50%;
}
.player {
background-color: rgba(255, 255, 255, 0.2);
box-sizing: content-box;
box-shadow: none;
}
.lost .player {
background: #a04040;
}
.won .player {
background: green;
}
.game {
position: relative;
overflow: hidden;
}
</style>
</head>
<body>
<script>
var LEVELS = [
[" ",
" ",
" ",
" ! ",
" ! ",
" ! ",
" ! ",
" ! xx xx x ! x ",
" ! o o xx x!!!x ",
" ! xx!xx ",
" !xxxxx! !!!!!!!!!!!!!!!!!!!!!x x ",
" x xx ",
" xx o o x x ",
" x! o x x ",
" x! !!!!! x!!!x x o x ",
" x! !xxxx o x x ",
" x! @ !!!!!x x xxxxx x ",
" xx xxxxxxxx xxxx!!!!xxxx xxxxxxxxxxxxxxxxxxxx xxxxxxx xxxxxxxxx ",
" x x x x x ",
" x!!!x x!!!!!x ",
" x x x x!!!x x!!!!!x ",
" xxxxx xxxxxxx ",
" ",
" "
],
[ " ! x!!x xxxxxxx x!x ",
" ! x!!x xxxx!!!!!xxxx x!x ",
" ! x!!xxxxxxxxxx xx xx x!x ",
" ! xx!!!!!!!!!!xx xx xx x!x ",
" ! xxxxxxxxxx!!x x o o o x!x ",
" ! xx!x x o o xx!x ",
" ! x!x x !!!xx!!!xx!!xxx!!x ",
" ! xvx x x x !!!!!!!!!!!!!!xx ",
" ! xx xx xxxxxxxxxxxxxxxxxxxxx ",
" ! xx!!!!!!!!!!!xx v ",
" ! xxxx!!!!!xxxx ",
" ! x x xxxxxxx xxx xxx ",
" ! x x x x x x x ",
" ! x x x x x ",
" ! x x x xx x ",
" ! xx x x x x ",
" ! x x o o x x x x ",
" xxxxxxx !xxx xxx x x x x x x ",
" xx xx x x x x xxxxxx x x xxxxxxxxx x ",
" xx xx x o x x xx x x x x ",
" @ x x x x x x!!!! x x ",
" x x x x x x x x xxxxx xxxxxx x ",
" x x x x !xx o xx x x o x x x ",
"!!!!x x!!!!!!x x x!!!!!!xx xx!!!!!!!!xx x!!!!!!!!!! x x x ",
"!!!!x x!!!!!!x x!!!!!xx xxxxxxxxxx x!!!!!!!xx! xxxxxx!xxxxxx xx o o xx ",
"!!!!x x!!!!!!x ! x!x!x!x o xx!!!!!!xx ! xx xx ",
"!!!!x x!!!!!!x xx!!!!!!xx ! xx xx ",
"!!!!x x!!!!!!x xxx x xxx xxxxxxxxxxxxxx!!!!!!xx ! ",
"!!!!x x!!!!!!x x x!!!!!!xx xxx!!!!!!!!!!!!!!!!!!xx ! ",
"!!!!x x!!!!!!x x!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!xx ! "
],
[" ",
" ",
" ",
" ",
" ",
" o ",
" ",
" x ",
" x !! ",
" x !! ",
" x ",
" xx! ! ",
" x x !!! !!! xxx ",
" xx x x !x! !x! ",
" !! xxx x!! x x ",
" !! x x x oooo x xxx ",
" x! x x x x x!!!x ",
" x x xxxxxxxxxxxx xxx ",
" x x x! x x x ",
" ! ! x xx!!!!xxx xxxxxxxx x x ",
" ! x x x x!!!x ",
" x x !x xxx ",
" x x xx !! x ",
" x x!! x xxx ",
" x !! x x x x!!!x ",
" x x !! x o xxx xxx ",
" x xx x x!!!x ",
" xx o o x x x x xxv xxx ",
" x x x x x!!!x ",
" xxxx xx!!xxx xxx o o x!!!!!!!!!!!!!!x vx ",
" x x xxx x xxx x x!!!!!!!!!!!!!!x ",
" x ! x xxxxxxxxxxxxxxxxxxxxxxx ",
" x xx x! xx xxx ",
" xxx x ! x x!!!x xxx ",
" x x x xxx x xxx x x ",
" x@ x x xxx xxxxxxx xxxxx x ",
" x x x x x x ",
" x! !! x x x x x ",
" x x x x!!x x!!x xxx xxx x ",
" x xx xxx o o x x xxx x ",
" x xxxxx xx x xxx x!!!x x x ",
" x oxxxo x xxx x x x xxx xxx x ",
" x xxx xx xxxx x x oo x x oo x x oo xx xx xxx x ",
" x x x x!!x x!!!!x x!!!!x xx xx x x ",
" x xx xx xxxxxx xxx xxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx ",
" ",
" "
],
[" xxx x ",
" x ",
" xxxxx ",
" x ",
" x xxx ",
" o x x x ",
" ! o o oxxx x ",
" xxx ! x ",
" ! o ! x!!!x x!!!x x!!!x x!!!x x!!!x x x!xxxxx ",
" x x x x!x x!x x!x x!x x!x!!!x x ",
" x o x x xxx x xxx x xxx x xxx x xxx x xxx x xxxxx ",
" x x x x x x x x x x x x x x x ",
" ! o ! o xxxx xxxxx xxxxx xxxxx xxxxx xxxxx xxxxxxx ",
" ",
" o x!x xx ",
" ",
" !! ",
" !! xx ",
" x!x x!x ",
" ",
" !! o x x ",
" xx xx ",
" x!x x!x x!x x x ",
" ",
" || !!!!! ",
" xxx xx ",
" x x o xxxxxxxxx o xxxxxxxxx o xx!!!! x ",
" x x x x x x x ! || x x ",
" x @ xxxxx o xxxxx o xxxxx ! ",
" xx xx !xxxxx xx xx xxx o ",
" x= = =x x xxx ",
" xxxxx xx!!!!!xx xx!!!!!xx xxxxxxx x!!!!!!!!!!!!!!!!!!!!!xxx!!!!!x!!!!!!x!!!!!x!!!!!!!x!!!!!!!!",
" xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx",
" "
]
];
function Vector(x, y) {
this.x = x;
this.y = y;
}
Vector.prototype.plus = function(other) {
return new Vector(this.x + other.x, this.y + other.y);
};
Vector.prototype.times = function(scale) {
return new Vector(this.x * scale, this.y * scale);
};
// Note: uppercase words are used that means constructor are values
var actorchars = {
"@": Player,
"o": Coin,
"=": Lava,
"|": Lava,
"v": Lava
};
function Player(pos) {
this.pos = pos.plus(new Vector(0, -.5));
this.size = new Vector(.9, .9);
this.speed = new Vector(0, 0);
}
Player.prototype.type = "player";
function Lava(pos, ch) {
this.pos = pos;
this.size = new Vector(1, 1);
if (ch === "=")
this.speed = new Vector(2, 0);
else if (ch === '|')
this.speed = new Vector(0, 2);
else if (ch === 'v') {
this.speed = new Vector(0, 3);
this.repeatPos = pos;
}
}
Lava.prototype.type = "Lava";
function Coin(pos) {
this.basePos = this.pos = pos;
this.size = new Vector(.6, .6);
// take a look back
this.wobble = Math.random() * Math.PI * 2;
}
Coin.prototype.type = "coin";
Level.prototype.isFinished = function() {
return this.status != null && this.finishDelay < 0;
};
function Level(plan) {
this.width = plan[0].length;
this.height = plan.length;
this.grid = [];
this.actors = [];
for (var y = 0; y < this.height; y++) {
var line = plan[y],
gridLine = [];
for (var x = 0; x < this.width; x++) {
var ch = line[x],
fieldType = null;
var Actor = actorchars[ch];
if (Actor)
this.actors.push(new Actor(new Vector(x, y), ch));
else if (ch === "x")
fieldType = "wall";
else if (ch === "!")
fieldType = "lava";
else if (ch === "|")
fieldType = "lava";
else if (ch === "=")
fieldType = "lava";
else if (ch === "v") {
fieldType = "lava";
console.log(fieldType);
}
gridLine.push(fieldType)
}
this.grid.push(gridLine);
}
this.player = this.actors.filter(function(actor) {
return actor.type === "player"
})[0];
this.status = this.finishDelay = null;
}
function element(name, className) {
var elem = document.createElement(name);
if (className) elem.className = className;
return elem;
}
function DOMDisplay(parent, level) {
this.wrap = parent.appendChild(element("div", "game"));
this.level = level;
this.wrap.appendChild(this.drawBackground());
this.actorLayer = null;
this.drawFrame();
}
var scale = 15;
DOMDisplay.prototype.drawBackground = function() {
var table = element("table", "background");
table.style.width = this.level.width * scale + "px";
table.style.height = this.level.height * scale + "px";
this.level.grid.forEach(function(row) {
var rowElement = table.appendChild(element("tr"));
rowElement.style.height = scale + "px";
row.forEach(function(type) {
rowElement.appendChild(element("td", type));
});
});
return table;
};
DOMDisplay.prototype.drawActors = function() {
var wrap = element("div");
this.level.actors.forEach(function(actor) {
var rect = wrap.appendChild(element("div", "actor " + actor.type));
rect.style.width = actor.size.x * scale + "px";
rect.style.height = actor.size.y * scale + "px";
rect.style.left = actor.pos.x * scale + "px";
rect.style.top = actor.pos.y * scale + "px";
});
return wrap;
}
DOMDisplay.prototype.drawFrame = function() {
if (this.actorLayer)
this.wrap.removeChild(this.actorLayer);
this.actorLayer = this.wrap.appendChild(this.drawActors());
this.wrap.className = "game " + (this.level.status || "");
this.scrollPlayerIntoView();
};
// clear it later
DOMDisplay.prototype.scrollPlayerIntoView = function() {
var width = this.wrap.clientWidth;
var height = this.wrap.clientHeight;
var margin = width / 3;
// The viewport
var left = this.wrap.scrollLeft,
right = left + width;
var top = this.wrap.scrollTop,
bottom = top + height;
var player = this.level.player;
var center = player.pos.plus(player.size.times(0.5))
.times(scale);
if (center.x < left + margin)
this.wrap.scrollLeft = center.x - margin;
else if (center.x > right - margin)
this.wrap.scrollLeft = center.x + margin - width;
if (center.y < top + margin)
this.wrap.scrollTop = center.y - margin;
else if (center.y > bottom - margin)
this.wrap.scrollTop = center.y + margin - height;
};
DOMDisplay.prototype.clear = function() {
this.wrap.parentNode.removeChild(this.wrap);
};
Level.prototype.obstacleAt = function(pos, size) {
var xStart = Math.floor(pos.x);
var xEnd = Math.ceil(pos.x + size.x);
var yStart = Math.floor(pos.y);
var yEnd = Math.ceil(pos.y + size.y);
if (xStart < 0 || xEnd > this.width || yStart < 0)
return "wall";
if (yEnd > this.height)
return "lava";
for (var y = yStart; y < yEnd; y++) {
for (var x = xStart; x < xEnd; x++) {
var fieldType = this.grid[y][x];
if (fieldType) return fieldType;
}
}
};
Level.prototype.actorAt = function(actor) {
for (var i = 0; i < this.actors.length; i++) {
var other = this.actors[i];
if (other != actor &&
actor.pos.x + actor.size.x > other.pos.x &&
actor.pos.x < other.pos.x + other.size.x &&
actor.pos.y + actor.size.y > other.pos.y &&
actor.pos.y < other.pos.y + other.size.y)
return other;
}
};
var maxStep = 0.05;
Level.prototype.animate = function(step, keys) {
if (this.status != null)
this.finishDelay -= step;
while (step > 0) {
var thisStep = Math.min(step, maxStep);
this.actors.forEach(function(actor) {
actor.act(thisStep, this, keys);
}, this);
step -= thisStep;
}
};
Lava.prototype.act = function(step, level) {
var newPos = this.pos.plus(this.speed.times(step));
if (!level.obstacleAt(newPos, this.size))
this.pos = newPos;
else if (this.repeatPos)
this.pos = this.repeatPos;
else
this.speed = this.speed.times(-1);
};
var wobbleSpeed = 8,
wobbleDist = 0.07;
Coin.prototype.act = function(step) {
this.wobble += step * wobbleSpeed;
var wobblePos = Math.sin(this.wobble) * wobbleDist;
this.pos = this.basePos.plus(new Vector(0, wobblePos));
};
var playerXSpeed = 10;
Player.prototype.moveX = function(step, level, keys) {
this.speed.x = 0;
if (keys.left) this.speed.x -= playerXSpeed;
if (keys.right) this.speed.x += playerXSpeed;
var motion = new Vector(this.speed.x * step, 0);
var newPos = this.pos.plus(motion);
var obstacle = level.obstacleAt(newPos, this.size);
if (obstacle)
level.playerTouched(obstacle);
else
this.pos = newPos;
};
var gravity = 30;
var jumpSpeed = 17;
Player.prototype.moveY = function(step, level, keys) {
this.speed.y += step * gravity;
var motion = new Vector(0, this.speed.y * step);
var newPos = this.pos.plus(motion);
var obstacle = level.obstacleAt(newPos, this.size);
if (obstacle) {
level.playerTouched(obstacle);
if (keys.up && this.speed.y > 0)
this.speed.y = -jumpSpeed;
else
this.speed.y = 0;
} else {
this.pos = newPos;
}
};
Player.prototype.act = function(step, level, keys) {
this.moveX(step, level, keys);
this.moveY(step, level, keys);
var otherActor = level.actorAt(this);
if (otherActor)
level.playerTouched(otherActor.type, otherActor);
// Losing animation
if (level.status == "lost") {
this.pos.y += step;
this.size.y -= step;
}
};
Level.prototype.playerTouched = function(type, actor) {
if (type == "lava" && this.status == null) {
this.status = "lost";
this.finishDelay = 1;
} else if (type == "coin") {
this.actors = this.actors.filter(function(other) {
return other != actor;
});
if (!this.actors.some(function(actor) {
return actor.type == "coin";
})) {
this.status = "won";
this.finishDelay = 1;
}
}
};
var arrowCodes = {
37: "left",
38: "up",
39: "right"
};
function trackKeys(codes) {
var pressed = Object.create(null);
function handler(event) {
if (codes.hasOwnProperty(event.keyCode)) {
var down = event.type == "keydown";
pressed[codes[event.keyCode]] = down;
event.preventDefault();
}
}
addEventListener("keydown", handler);
addEventListener("keyup", handler);
return pressed;
}
function runAnimation(frameFunc) {
var lastTime = null;
function frame(time) {
var stop = false;
if (lastTime != null) {
var timeStep = Math.min(time - lastTime, 100) / 1000;
stop = frameFunc(timeStep) === false;
}
lastTime = time;
if (!stop)
requestAnimationFrame(frame);
}
requestAnimationFrame(frame);
}
var arrows = trackKeys(arrowCodes);
function runLevel(level, Display, andThen) {
var display = new Display(document.body, level);
runAnimation(function(step) {
level.animate(step, arrows);
display.drawFrame(step);
if (level.isFinished()) {
display.clear();
if (andThen)
andThen(level.status);
return false;
}
});
}
function runGame(plans, Display) {
function startLevel(n) {
runLevel(new Level(plans[n]), Display, function(status) {
if (status == "lost")
startLevel(n);
else if (n < plans.length - 1)
startLevel(n + 1);
else
alert("You win!");
});
}
startLevel(0);
}
runGame(LEVELS, DOMDisplay);
</script>
<div style="text-align:center;clear:both">
</div>
</body>
</html>

复制代码

以上是开源代码

demo.rar (4.6 KB, 下载次数: 26)

x20032004x · 发表于 2022-2-26 11:45:47

看不懂很厉害的样子

hornwong · 发表于 2022-2-27 00:37:08

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[作品展示] 小游戏 “简单版”

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