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tetrisnake.html
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<!doctype html>
<html lang="en-us">
<head>
<meta charset="utf-8">
<title>Tetrisnake</title>
<meta name="description" content="">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css">
<style type="text/css">
html {
height: 100%;
}
body {
color: #FFF;
background-color: #000;
height: 100%;
text-align: center;
}
#matrix_container{
position:absolute;
bottom:0;
left:50%;
width:100%;
margin:0 auto;
}
#matrix {
margin: 0;
position: relative;
left: -50%;
}
.matrix_cell {
padding: 0;
background-color: #000;
}
.game_block {
/*border: 1px solid #ccc;*/
position: relative;
width: 100%; /* desired width */
}
.game_block:before{
content: "";
display: block;
padding-top: 100%; /* initial ratio of 1:1*/
}
.filled_block {
background-color: #fff;
}
/* debug */
.dbg_text{
color: #888;
font-size: 8px;
position: absolute;
top: 0;
left: 0;
}
</style>
</head>
<body>
<div class="" id="matrix_container">
<div class="row" id="matrix">
</div>
</div>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<script>
/* define */
var FILLED_BLOCK_CLASS = 'filled_block',
GAME_LOOP_TIME = 34,
// frames: time
// 60: 16
// 30: 33
// 10: 100
SNAKE_SPEED = 60,
TETRIS_SPEED = 300,
TETRIS_SPEED_HARD = 30,
SPACE_KEY = 32;
/* enums */
var EMPTY_BLOCK = 1, // Matrix data
FILLED_BLOCK = 2,
UP_KEY = 3, // Keys for snake
DOWN_KEY = 4,
LEFT_KEY = 5,
RIGHT_KEY = 6;
/* config */
var app = {
matrix: {
w: 20,
h: 32
},
snake: {
startX: 1,
startY: 15,
startLength: 5
}
};
/* HTML caching */
var $matrix = $('#matrix');
var $matrix_container = $('#matrix_container');
/* preparing the matrix */
app.matrix.data = [];
app.matrix.el = [];
for (var ix = 0; ix < app.matrix.w; ix++) {
app.matrix.data[ix] = [];
app.matrix.el[ix] = [];
for (var iy = 0; iy < app.matrix.h; iy++) {
app.matrix.data[ix][iy] = EMPTY_BLOCK;
};
}
for (var iy = 0; iy < app.matrix.h; iy++) {
for (var ix = 0; ix < app.matrix.w; ix++) {
app.matrix.el[ix][iy] = $('<div class="col-xs-1 matrix_cell"><div class="game_block"></div></div>');
// app.matrix.el[ix][iy].find('.game_block').append('<div class="dbg_text">'+ix+':'+iy+'</div');
$matrix.append( app.matrix.el[ix][iy] );
};
}
app.stop = false;
app.matrix.max = { x: app.matrix.w -1, y: app.matrix.h -1 };
app.matrix.set = function ( body ) {
this.data[body.x][body.y] = FILLED_BLOCK;
};
app.gameOver = function () {
console.log( 'GAME OVER' );
app.stop = true;
};
app.render = function () {
for (var ix = 0; ix < app.matrix.w; ix++) {
for (var iy = 0; iy < app.matrix.h; iy++) {
if( app.matrix.data[ix][iy] == EMPTY_BLOCK ){
app.matrix.el[ix][iy].removeClass( FILLED_BLOCK_CLASS );
} else {
app.matrix.el[ix][iy].addClass( FILLED_BLOCK_CLASS );
}
app.matrix.data[ix][iy] = EMPTY_BLOCK;
};
}
};
var BaseGameObject = {
data: [],
checkCollisionWith: function ( neighbor ) {
for (var i = 0; i < this.data.length; i++) {
if( neighbor.checkCollision( this.data[i] ) ){
return true;
}
}
return false;
},
checkCollision: function ( body ) {
for(var i in this.data){
if( this.data[i].x == body.x && this.data[i].y == body.y)
return true;
}
return false;
},
show: function () {
for (var i = 0; i < this.data.length; i++) {
app.matrix.set( this.data[i] );
};
}
};
var Snake = {
position: { x: app.snake.startX, y: app.snake.startY },
velocity: { x: 1, y: 0 },
lockMatrix: null,
fallingPieces: null,
size: app.snake.startLength,
// timerClass
timeStep: 0,
// use key queue or find last held key
events: function ( keys ) {
key = keys.shift();
if (typeof key == "undefined") {
last_key_time = 0;
for (var i in heldKeys) {
if( (i in keyMap) && (heldKeys[i] > last_key_time) ){
last_key_time = heldKeys[i];
key = keyMap[ i ];
}
}
}
if( key == UP_KEY && this.velocity.y == 0 ){
this.velocity.x = 0;
this.velocity.y = -1;
}
if( key == DOWN_KEY && this.velocity.y == 0 ){
this.velocity.x = 0;
this.velocity.y = 1;
}
if( key == LEFT_KEY && this.velocity.x == 0 ){
this.velocity.x = -1;
this.velocity.y = 0;
}
if( key == RIGHT_KEY && this.velocity.x == 0 ){
this.velocity.x = 1;
this.velocity.y = 0;
}
},
move: function ( time ) {
if( time < this.timeStep ) return;
this.timeStep = time + SNAKE_SPEED;
Snake.events( keyQueue );
this.position.x += this.velocity.x;
this.position.y += this.velocity.y;
if( this.position.x < 0 ){
this.position.x = app.matrix.max.x;
}
if( this.position.x > app.matrix.max.x ){
this.position.x = 0;
}
if( this.position.y < 0 || this.checkCollisionWith( this.lockMatrix ) ){
app.gameOver();
}
if( this.checkCollisionWith( this ) ){
app.gameOver();
}
if( this.checkCollisionWith( this.fallingPieces ) ){
this.fallingPieces.remove( this.position );
this.size++;
}
this.data.push( { x: this.position.x, y: this.position.y } );
while( this.data.length > this.size ) {
this.data.shift();
}
},
// overloading because using position
checkCollisionWith: function ( neighbor ) {
if( neighbor.checkCollision( this.position ) ){
return true;
}
return false;
},
};
Snake = $.extend( true, {}, BaseGameObject, Snake );
var FallingPiece = {
position: { x: 0, y: 0 },
velocity: { x: 0, y: 1 }, // constant..
lockMatrix: null,
snake: null,
// timerClass
timeStep: 0,
timeStepHard: 0,
move: function ( time ) {
if ( SPACE_KEY in heldKeys ) {
if( time < this.timeStepHard ) return;
} else {
if( time < this.timeStep ) return;
}
this.timeStep = time + TETRIS_SPEED;
this.timeStepHard = time + TETRIS_SPEED_HARD;
//! new piece
if( this.data.length == 0 ){
this.data = $.extend(true, [], TetrisPieces[ rand( TetrisPieces.length -1 ) ]);
fairX = this.lockMatrix.getFairX();
newX = rand( app.matrix.max.x );
farX = 0;
for (var i = 0; i < this.data.length; i++) {
if( this.data[i].x > farX ){
farX = this.data[i].x;
}
}
newX = fairX - rand( farX );
if( newX + farX > app.matrix.max.x )
newX = app.matrix.max.x - farX;
if( newX < 0 )
newX = 0;
for (var i = 0; i < this.data.length; i++) {
this.data[i].x += newX;
}
if( this.checkCollisionWith( this.lockMatrix ) ){
app.gameOver();
}
return; //! dont move new piece.
}
// Move
this.advance();
// collision detection
if( this.checkCollisionWith( this.lockMatrix ) ){ // with locked pieces
this.advance(-1); // go back
this.lock();
}
if( this.checkCollisionWith( this.snake ) ){
this.advance(-1); // just go back
}
},
advance: function ( goBack ) {
if( typeof goBack == "undefined" ){
goBack = 1;
}
var vel = this.velocity.y * goBack;
for (var i = 0; i < this.data.length; i++) {
this.data[i].y += vel;
}
},
lock: function () {
for (var i = 0; i < this.data.length; i++) {
this.lockMatrix.data.push( { x: this.data[i].x, y: this.data[i].y } );
}
this.data = [];
this.lockMatrix.checkLines();
},
remove: function ( coordinates ) {
for(var i in this.data){
if( this.data[i].x == coordinates.x && this.data[i].y == coordinates.y){
this.data.splice(i, 1);
return;
}
}
}
};
FallingPiece = $.extend( true, {}, BaseGameObject, FallingPiece );
var LockedPieces = {
// find lowest free-fall point
getFairX: function () {
HighYs = {};
for(var i in this.data){
if( (typeof HighYs[ this.data[i].x ] == "undefined")
|| ( this.data[i].y < HighYs[ this.data[i].x ].y ) ){
HighYs[ this.data[i].x ] = this.data[i];
}
}
for (var i = 0; i <= app.matrix.max.x; i++) {
if (typeof HighYs[i] == "undefined"){
return i;
}
}
LowY = {x:0,y:0};
for(var i in HighYs){
if( HighYs[i].y > LowY.y ){
LowY = HighYs[i];
}
}
return LowY.x;
},
checkLines: function () {
Yaxis = {};
for(var i in this.data){
if( typeof Yaxis[ this.data[i].y ] == "undefined")
Yaxis[this.data[i].y] = 0;
Yaxis[this.data[i].y]++;
}
for(var y in Yaxis){
if( Yaxis[y] > app.matrix.max.x ){
this.data = $.grep(this.data, function(item) {
return item.y != y;
});
for (var j in this.data) {
if( this.data[j].y < y ){
this.data[j].y += 1;
}
}
}
}
},
checkCollision: function ( body ) {
if( body.y > app.matrix.max.y ) return true;
// return this.paretn.checkCollision( body ); //! ***
for(var i in this.data){
if( this.data[i].x == body.x && this.data[i].y == body.y)
return true;
}
return false;
}
};
LockedPieces = $.extend( true, {}, BaseGameObject, LockedPieces );
var heldKeys = {};
var keyQueue = [];
var keyMap = {
'87': UP_KEY,
'83': DOWN_KEY,
'65': LEFT_KEY,
'68': RIGHT_KEY,
'38': UP_KEY,
'40': DOWN_KEY,
'37': LEFT_KEY,
'39': RIGHT_KEY
};
$( document ).ready(function() {
// fix cell size to fit matrix
$('.matrix_cell').css('width', (100 / app.matrix.w)+'%');
// fix matrix size to fit window
$matrix_container.css('width', $(window).height() / app.matrix.h * app.matrix.w );
// controls
$(document).on( "keydown", function (event) {
if ( event.keyCode in heldKeys ) {
return false;
}
if( app.stop ) return;
heldKeys[event.keyCode] = $.now();
if( event.keyCode in keyMap ){
keyQueue.push( keyMap[event.keyCode] );
}
});
$(document).on( "keyup", function (event) {
delete heldKeys[event.keyCode];
});
$(window).on( "focus", function (event) {
app.stop = false;
}).on( "blur", function (event) {
app.stop = true;
});
// setup
FallingPiece.lockMatrix = LockedPieces;
FallingPiece.snake = Snake;
Snake.lockMatrix = LockedPieces;
Snake.fallingPieces = FallingPiece;
// Game Loop
setInterval(function(){
if( app.stop ) return;
// # Events
// Snake.events( keyQueue );
// # Logic
now = $.now();
Snake.move( now );
FallingPiece.move( now );
// # Rendering
Snake.show();
FallingPiece.show();
LockedPieces.show();
app.render();
}, GAME_LOOP_TIME);
});
/*
I J L O S T Z
XXXX X X XX XX X XX
XXX XXX XX XX XXX XX
*/
var TetrisPieces = [
// I
[{x: 0, y: 1}, {x: 1, y: 1}, {x: 2, y: 1}, {x: 3, y: 1}],
[{x: 1, y: 0}, {x: 1, y: 1}, {x: 1, y: 2}, {x: 1, y: 3}],
[{x: 0, y: 1}, {x: 1, y: 1}, {x: 2, y: 1}, {x: 3, y: 1}],
[{x: 1, y: 0}, {x: 1, y: 1}, {x: 1, y: 2}, {x: 1, y: 3}],
// J
[{x: 0, y: 0}, {x: 0, y: 1}, {x: 1, y: 1}, {x: 2, y: 1}],
[{x: 0, y: 0}, {x: 1, y: 0}, {x: 0, y: 1}, {x: 0, y: 2}],
[{x: 0, y: 0}, {x: 1, y: 0}, {x: 2, y: 0}, {x: 2, y: 1}],
[{x: 1, y: 0}, {x: 1, y: 1}, {x: 1, y: 2}, {x: 0, y: 2}],
// L
[{x: 0, y: 1}, {x: 1, y: 1}, {x: 2, y: 1}, {x: 2, y: 0}],
[{x: 0, y: 0}, {x: 0, y: 1}, {x: 0, y: 2}, {x: 1, y: 2}],
[{x: 0, y: 0}, {x: 1, y: 0}, {x: 2, y: 0}, {x: 0, y: 1}],
[{x: 0, y: 0}, {x: 1, y: 0}, {x: 1, y: 1}, {x: 1, y: 2}],
// O
[{x: 0, y: 0}, {x: 1, y: 0}, {x: 0, y: 1}, {x: 1, y: 1}],
[{x: 0, y: 0}, {x: 1, y: 0}, {x: 0, y: 1}, {x: 1, y: 1}],
[{x: 0, y: 0}, {x: 1, y: 0}, {x: 0, y: 1}, {x: 1, y: 1}],
[{x: 0, y: 0}, {x: 1, y: 0}, {x: 0, y: 1}, {x: 1, y: 1}],
// S
[{x: 1, y: 0}, {x: 2, y: 0}, {x: 0, y: 1}, {x: 1, y: 1}],
[{x: 0, y: 0}, {x: 0, y: 1}, {x: 1, y: 1}, {x: 1, y: 2}],
[{x: 1, y: 0}, {x: 2, y: 0}, {x: 0, y: 1}, {x: 1, y: 1}],
[{x: 0, y: 0}, {x: 0, y: 1}, {x: 1, y: 1}, {x: 1, y: 2}],
// T
[{x: 0, y: 1}, {x: 1, y: 0}, {x: 1, y: 1}, {x: 2, y: 1}],
[{x: 0, y: 0}, {x: 0, y: 1}, {x: 1, y: 1}, {x: 0, y: 2}],
[{x: 0, y: 0}, {x: 1, y: 0}, {x: 1, y: 1}, {x: 2, y: 0}],
[{x: 0, y: 1}, {x: 1, y: 0}, {x: 1, y: 1}, {x: 1, y: 2}],
// Z
[{x: 0, y: 0}, {x: 1, y: 0}, {x: 1, y: 1}, {x: 2, y: 1}],
[{x: 1, y: 0}, {x: 1, y: 1}, {x: 0, y: 1}, {x: 0, y: 2}],
[{x: 0, y: 0}, {x: 1, y: 0}, {x: 1, y: 1}, {x: 2, y: 1}],
[{x: 1, y: 0}, {x: 1, y: 1}, {x: 0, y: 1}, {x: 0, y: 2}],
];
// Helper functions
function rand(max, min) {
if (typeof min == "undefined") min = 0;
return Math.floor(Math.random() * (max - min)) + min;
}
/*
Workplan:
Object inheritance
*timer Class,
** relations between game objects
new tetris piece every few seconds
v Hard drop for the oldest piece ( hold space key )
# Game Logic:
Events: keys
Logic:
Timers
Motion
Collision Detection
Collections of Elements (tetris pieces)
# Architecture
new,
inheritance
elements -> body -> write to matrix
body:
set of coordinates,
velocities, (delays?)
between elements relation:
collision detection and responce API.
game to elements relation:
snake dies
scoring
frame: render from matrix to DOM, clear matrix.
Object new?
Object collections? (learn from underscore?)
Object passing, cloning?
*/
/*
## Spec:
### Tetris:
matrix: 10 x 20 (original)
my: 32 x 48
my: 20 x 40
blocks:
XXXX X X XX
XXX XXX XX
XX X XX
XX XXX XX
Score:
More difficult line clears should be awarded more points.
Many games award a number of points based on the height
that the piece fell before locking.
Rools:
High chance for start position of next block at highest path
(most empty blocks from top to bottom)
Random rotation of blocks?
### Snake:
Player controls snake
Eats falling blocks,
Cant eat Self,
Can go through left/right walls,
Snake is faster than tetris
### Notes:
HUD:
SCORE
*Level
*Lines
*Show Next block
Score system:
Tetris scoring higher than snake eating:
to encourage building lines.
Lines disappear and make space for more scoring.
Also snake gets bigger till no more space and game over
so final score is lower if no lines were made.
Reference:
http://img0.joyreactor.cc/pics/post/%D0%B3%D0%B8%D1%84-%D1%82%D0%B5%D1%82%D1%80%D0%B8%D1%81-%D0%98%D0%B3%D1%80%D1%8B-%D0%97%D0%BC%D0%B5%D0%B9%D0%BA%D0%B0-1422153.gif
*/
</script>
</body>
</html>