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stack.html
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<html>
<head>
<style>
body {
background: black;
margin: 0;
padding: 0;
}
.container {
width: 1000px;
height: 800px;
margin: calc((100vh - 820px) / 2) auto;
position: relative;
}
canvas {
position: absolute;
}
#canvas {
background: #333;
}
</style>
</head>
<body>
<div class="container">
<canvas id="canvas"></canvas>
<canvas id="ui"></canvas>
</div>
<script>
function randomInt(...args) {
if (args.length === 1) {
const [n] = args;
return Math.ceil(Math.random() * n);
}
if (args.length === 2) {
const [start, end] = args;
if (start > end) throw Error("시작값이 끝값보다 큼");
return Math.ceil(Math.random() * (end - start)) + start;
}
}
function random(...args) {
if (args.length === 1) {
const [n] = args;
return Math.random() * n;
}
if (args.length === 2) {
const [start, end] = args;
if (start > end) throw Error("시작값이 끝값보다 큼");
return Math.random() * (end - start) + start;
}
}
function normalize(n) {
return n < 0 ? -1 : n > 0 ? 1 : 0;
}
function clamp(v, min, max) {
return Math.max(min, Math.min(max, v));
}
function between(v, min, max) {
return min <= v && v <= max;
}
</script>
<script>
/**
* Vector Library
**/
class Vector {
constructor(x, y) {
this.x = x;
this.y = y;
}
add(v) {
this.x += v.x;
this.y += v.y;
}
sub(v) {
this.x -= v.x;
this.y -= v.y;
}
mult(n) {
this.x *= n;
this.y *= n;
}
mag() {
return Math.sqrt(this.x * this.x + this.y + this.y);
}
get() {
return new Vector(this.x, this.y);
}
normalize() {
this.x = normalize(this.x);
this.y = normalize(this.y);
}
}
Vector.mult = (v, n) => new Vector(v.x * n, v.y * n);
Vector.div = (v, n) => new Vector(v.x / n, v.y / n);
</script>
<script>
/**
* Canvas Library
**/
const canvas = document.getElementById("canvas");
const context = canvas.getContext("2d");
const uiCanvas = document.getElementById("ui");
const uiContext = uiCanvas.getContext("2d");
const width = 1000;
const height = 800;
canvas.width = width;
canvas.height = height;
uiCanvas.width = width;
uiCanvas.height = height;
function rect(x, y, w, h) {
context.beginPath();
context.rect(x, y, w, h);
context.strokeStyle = "#ffffff";
context.stroke();
context.closePath();
}
function fillRect(x, y, w, h, color = "#171717") {
context.save();
context.beginPath();
context.fillStyle = color;
context.fillRect(x, y, w, h);
context.stroke();
context.closePath();
context.restore();
}
function circle(x, y, r) {
context.beginPath();
context.arc(x, y, r, 0, Math.PI * 2);
context.lineWidth = 3;
context.strokeStyle = "#fff";
context.stroke();
context.closePath();
}
function fillText(text, x, y, fontSize, color = "white") {
uiContext.fillStyle = "white";
uiContext.font = `${fontSize}px Arial`;
uiContext.fillText(text, x, y);
}
function clear() {
context.clearRect(-100000, -100000, 200000, 200000);
}
</script>
<script>
/**
* User Code
**/
const BLOCK_START_WIDTH = 300;
const BLOCK_HEIGHT = 50;
const SLIDE_START_LEVEL = 10;
const X_TOLERANCE_PERCENT = 0.02;
class Block {
constructor(x, width, level) {
this.velocity = new Vector(5 + ~~(level / 15), 0);
this.height = BLOCK_HEIGHT;
this.level = level;
this.width = width;
this.moving = true;
this.position = new Vector(x, this.targetY);
}
draw() {
fillRect(
this.position.x,
this.position.y,
this.width,
this.height - 1,
this.color
);
}
get color() {
return `hsl(${this.level}, 100%, 50%)`;
}
fitStack({ stackStartX, stackWidth }) {
const stackEndX = stackStartX + stackWidth;
const fit =
between(this.position.x, stackStartX, stackEndX) ||
between(this.position.x + this.width, stackStartX, stackEndX);
return fit;
}
trim({ stackStartX, stackWidth }) {
if (
Math.abs(stackStartX - this.position.x) <
this.width * X_TOLERANCE_PERCENT
) {
this.position.x = stackStartX;
} else {
const stackEndX = stackStartX + stackWidth;
const blockEndX = clamp(
this.position.x + this.width,
stackStartX,
stackEndX
);
this.position.x = clamp(this.position.x, stackStartX, stackEndX);
this.width = blockEndX - this.position.x;
}
}
stop() {
this.velocity = new Vector(0, 0);
this.moving = false;
}
down() {
this.velocity = new Vector(0, 30);
}
get targetY() {
return height - this.level * this.height;
}
get finishMoving() {
return !this.moving;
}
update(state) {
this.position.add(this.velocity);
if (this.moving && this.finishMoving && this.fitStack(state)) {
this.stop();
this.position.y = this.targetY;
}
}
checkEdges() {
if (this.position.x > width - this.width) {
this.position.x = width - this.width;
this.velocity.x *= -1;
} else if (this.position.x < 0) {
this.position.x = 0;
this.velocity.x *= -1;
}
if (this.position.y > height - this.height) {
this.stop();
this.position.y = height - this.height;
}
}
}
class Slider {
constructor(t) {
this.t = t;
}
slide(t) {
this.t += t;
}
update(state) {
if (this.t > 0) {
this.t -= 2;
context.translate(0, 2);
}
}
get finishSliding() {
return this.t <= 0;
}
}
class Scaler {
constructor(level) {
this.level = level;
this.totalHeight = BLOCK_HEIGHT * this.level + 150;
this.ratio = (height / this.totalHeight) * 100;
this.t = 100;
}
update() {
const totalHeight = BLOCK_HEIGHT * this.level + 150;
const ratio = this.t / 100;
if (totalHeight > height && this.t > this.ratio) {
this.t -= 1;
const scaleX = ratio;
const scaleY = ratio;
const translateX = 5 * (100 - this.t);
const translateY = (totalHeight - height) * ratio + 150;
context.setTransform(scaleX, 0, 0, scaleY, translateX, translateY);
}
}
}
const getBestScore = () => localStorage.getItem("stackBestLevel") || 1;
const setBestScore = (score) =>
localStorage.setItem("stackBestLevel", Math.max(getBestScore(), score));
class UI {
constructor(state) {
this.state = state;
}
draw() {
uiContext.clearRect(0, 0, width, height);
if (!this.state.start) {
fillText("스페이스바로 시작하기", 300, 150, 40, "white");
fillText(`최고기록 ${getBestScore() - 1}`, 380, 300, 40, "white");
} else {
const levelLength = this.state.level.toString().length;
const levelTextOffset = 15 * levelLength;
fillText(
this.state.level - 1,
width / 2 - levelTextOffset,
150,
60,
"white"
);
}
if (this.state.over) {
fillText("게임오버", 410, 250, 50, "white");
fillText("스페이스바로 다시 시작", 300, 350, 40, "white");
}
}
}
/**
* Main Code
**/
let blocks = [];
let slider;
let scaler;
let ui;
const state = {
start: false,
over: false,
level: 1,
blockFalling: false,
stackWidth: 300,
stackStartX: width / 2 - BLOCK_START_WIDTH / 2,
};
function setup() {
//blocks = [...Array(state.level)].map((_, i) => new Block(state.stackStartX, BLOCK_START_WIDTH, i + 1))
//blocks.forEach(i => i.stop())
//context.translate(0, BLOCK_HEIGHT * state.level - 500)
blocks = [new Block(state.stackStartX, BLOCK_START_WIDTH, state.level)];
blocks[0].stop();
slider = new Slider(0);
ui = new UI(state);
}
function draw() {
clear();
blocks.forEach((block) => {
block.update(state);
block.checkEdges();
block.draw();
});
slider.update(state);
if (scaler) scaler.update();
ui.draw();
}
function run() {
draw();
const block = blocks[blocks.length - 1];
if (state.start && !state.over && block.finishMoving) {
if (block.fitStack(state)) {
block.trim(state);
state.level += 1;
state.stackWidth = block.width;
state.stackStartX = block.position.x;
blocks.push(new Block(0, state.stackWidth, state.level));
if (state.level >= SLIDE_START_LEVEL) {
slider.slide(50);
}
setBestScore(state.level);
} else {
console.log("game over!");
block.down();
state.over = true;
scaler = new Scaler(state.level);
}
}
requestAnimationFrame(run);
}
window.onkeypress = ({ key }) => {
if (key !== " ") return;
state.start = true;
if (state.over) return location.reload();
const block = blocks[blocks.length - 1];
block.stop();
};
setup();
requestAnimationFrame(run);
</script>
</body>
</html>