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index.html
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index.html
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<html>
<style>
#board {
/* width: 200px;
height: 400px; */
background: pink;
}
.row {
border: 1px solid red;
padding: 1px 0;
/*width: 210px;*/
/*height: 6px;*/
}
.cell {
border: 1px solid green;
display: inline-block;
/*padding: 1px;*/
height: 10px;
width: 10px;
}
.cell.floating {
background: black;
}
.cell.fixed {
background: red;
}
</style>
<body>
<div id="board"></div>
</body>
</div>
</hmtl>
<script type="text/javascript">
function getRandomInt(min, max) {
return Math.floor(Math.random() * (max - min + 1)) + min;
}
const SQUARE_TYPES = {
FLOATING: 1,
FIXED:2,
NONE: 0
}
const BOARD_SIZE = {
width: 20,
height: 20
};
const DIRECTIONS = {
LEFT: {dX: -1, dY: 0},
DOWN: {dX: 0, dY: 1},
RIGHT: {dX: 1, dY: 0}
}
class GameBoard {
constructor(width, height) {
console.log(width, height);
this.width = width;
this.height = height;
this.board = document.getElementById('board');
for(let i = 0; i < height; i++) {
const row = document.createElement('div');
row.className = 'row';
this.board.appendChild(row);
for(let j = 0; j < width; j++) {
const c = document.createElement('span');
c.className = 'cell';
c.dataset.y = i;
c.dataset.x = j;
if([0,1,2,3].indexOf(i) >= 0 && [0,1,2].indexOf(j) >= 0)
c.className += ' floating';
row.appendChild(c);
}
}
document.onkeydown = (event) => {
switch (event.key) {
case 'a': this.move(DIRECTIONS.LEFT); break;
case 's': this.move(DIRECTIONS.DOWN); break;
case 'd': this.move(DIRECTIONS.RIGHT); break;
case 'w': this.rotate(); break;
}
}
}
rotate() {
}
changeCell(x, y, type) {
const el = this.getCell(x,y);
if(!el) return;
window.requestAnimationFrame(
() => {
el.className = 'cell ' + type;
}
);
}
getCell(x, y) {
return document.querySelector(`.row:nth-child(${y+1}) > .cell:nth-child(${x+1})`);
}
getFloating() {
return document.querySelectorAll('.cell.floating');
}
getFixed() {
return document.querySelectorAll('.cell.fixed');
}
getPos(cell) {
return {
x: parseInt(cell.dataset.x),
y: parseInt(cell.dataset.y),
}
}
canMove(direction) {
const {dX, dY} = direction;
const floatingCells = this.getFloating();
var canMove = true;
for(let i = 0; i < floatingCells.length; i++) {
const c = floatingCells[i];
const {x, y} = this.getPos(c);
const newX = parseInt(x)+dX;
const newY = parseInt(y)+dY;
if(!( newX < this.width && newX >= 0 && newY >= 0 && newY < this.height)){
canMove = false; break;
}
}
return canMove;
}
moveCell(c, dX, dY) {
const {x, y} = this.getPos(c);
if(! this.canMove({dX, dY})) return;
const newX = parseInt(x)+dX;
const newY = parseInt(y)+dY;
let newType = 'floating';
if(newY == this.height-1 || this.getCell(newX, newY + 1).className.includes('fixed')) {
newType = 'fixed';
}
this.changeCell(x,y, 'none');
this.changeCell(newX, newY, newType);
}
move(direction) {
const {dX, dY} = direction;
let floatingCells = this.getFloating();
if(direction.dX === DIRECTIONS.RIGHT.dX ) {
for(let i = floatingCells.length - 1; i >= 0; i--) {
this.moveCell(floatingCells[i], dX, dY);
}
} else {
floatingCells.forEach(c => {
this.moveCell(c, dX, dY);
})
}
if(this.getFloating().length == 0) {
this.insertBlock();
}
}
insertBlock() {
const blockWidth = 3;
const posX = getRandomInt(0, BOARD_SIZE.width)
this.changeCell(posX + posX,0,'floating');
this.changeCell(posX + posX+1,0,'floating');
this.changeCell(posX + posX+2,0,'floating');
this.changeCell(posX + posX,1,'floating');
this.changeCell(posX + posX+1,1,'floating');
}
}
class Renderer {
constructor(eBoard) {
this.target = eBoard;
}
render() {
}
}
const gb = new GameBoard(BOARD_SIZE.width, BOARD_SIZE.height);
function step(timestamp) {
console.log('step'+Math.random());
gb.move(
DIRECTIONS[Object.keys(DIRECTIONS)[getRandomInt(0,2)]]
)
gb.move(
DIRECTIONS[Object.keys(DIRECTIONS)[getRandomInt(0,2)]]
)
gb.move(
DIRECTIONS[Object.keys(DIRECTIONS)[getRandomInt(0,2)]]
)
// do something for every frame
window.requestAnimationFrame(step);
}
window.requestAnimationFrame(step);
</script>