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tetris.js
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/*
Author: Simon Laroche
Site: http://simon.lc/
Note: Before looking at this code, it would be wise to do a bit of reading about
the game so you know why some things are done a certain way.
*/
'use strict';
var version = '0.1.7';
/**
* Playfield.
*/
var cellSize;
var stack;
/**
* Get html elements.
*/
var msg = document.getElementById('msg');
var stats = document.getElementById('stats');
var statsTime = document.getElementById('time');
var statsLines = document.getElementById('line');
var statsPiece = document.getElementById('piece');
var h3 = document.getElementsByTagName('h3');
var set = document.getElementById('settings');
// Get canvases and contexts
//var bgCanvas = document.getElementById('bg');
var holdCanvas = document.getElementById('hold');
var bgStackCanvas = document.getElementById('bgStack');
var stackCanvas = document.getElementById('stack');
var activeCanvas = document.getElementById('active');
var previewCanvas = document.getElementById('preview');
var spriteCanvas = document.getElementById('sprite');
//var bgCtx = bgCanvas.getContext('2d');
var holdCtx = holdCanvas.getContext('2d');
var bgStackCtx = bgStackCanvas.getContext('2d');
var stackCtx = stackCanvas.getContext('2d');
var activeCtx = activeCanvas.getContext('2d');
var previewCtx = previewCanvas.getContext('2d');
var spriteCtx = spriteCanvas.getContext('2d');
/**
* Piece data
*/
// NOTE y values are inverted since our matrix counts from top to bottom.
var kickData = [
[[0, 0], [0, 0], [0, 0], [0, 0], [0, 0]],
[[0, 0], [1, 0], [1, 1], [0, -2], [1, -2]],
[[0, 0], [0, 0], [0, 0], [0, 0], [0, 0]],
[[0, 0], [-1, 0], [-1, 1], [0, -2], [-1, -2]]
];
var kickDataI = [
[[0, 0], [-1, 0], [2, 0], [-1, 0], [2, 0]],
[[-1, 0], [0, 0], [0, 0], [0, -1], [0, 2]],
[[-1, -1], [1, -1], [-2, -1], [1, 0], [-2, 0]],
[[0, -1], [0, -1], [0, -1], [0, 1], [0, -2]]
];
// TODO get rid of this lol.
var kickDataO = [
[[0, 0]],
[[0, 0]],
[[0, 0]],
[[0, 0]]
];
// Define shapes and spawns.
var PieceI = {
index: 0,
x: 2,
y: -1,
kickData: kickDataI,
tetro: [
[0, 0, 0, 0, 0],
[0, 0, 1, 0, 0],
[0, 0, 1, 0, 0],
[0, 0, 1, 0, 0],
[0, 0, 1, 0, 0]]
};
var PieceJ = {
index: 1,
x: 3,
y: 0,
kickData: kickData,
tetro: [
[2, 2, 0],
[0, 2, 0],
[0, 2, 0]]
};
var PieceL = {
index: 2,
x: 3,
y: 0,
kickData: kickData,
tetro: [
[0, 3, 0],
[0, 3, 0],
[3, 3, 0]]
};
var PieceO = {
index: 3,
x: 4,
y: 0,
kickData: kickDataO,
tetro: [
[4, 4],
[4, 4]]
};
var PieceS = {
index: 4,
x: 3,
y: 0,
kickData: kickData,
tetro: [
[0, 5, 0],
[5, 5, 0],
[5, 0, 0]]
};
var PieceT = {
index: 5,
x: 3,
y: 0,
kickData: kickData,
tetro: [
[0, 6, 0],
[6, 6, 0],
[0, 6, 0]]
};
var PieceZ = {
index: 6,
x: 3,
y: 0,
kickData: kickData,
tetro: [
[7, 0, 0],
[7, 7, 0],
[0, 7, 0]]
};
var pieces = [PieceI, PieceJ, PieceL, PieceO, PieceS, PieceT, PieceZ];
/**
* Gameplay specific vars.
*/
var gravityUnit = 0.00390625;
var gravity;
var gravityArr = (function() {
var array = [];
array.push(0);
for (var i = 1; i < 64; i++)
array.push(i / 64);
for (var i = 1; i <= 20; i++)
array.push(i);
return array;
})();
var holdPiece;
var shift;
var settings = {
DAS: 10,
ARR: 1,
Gravity: 0,
'Soft Drop': 31,
'Lock Delay': 30,
Size: 0,
Sound: 0,
Volume: 100,
Block: 0,
Ghost: 0,
Grid: 0,
Outline: 0
};
var setting = {
DAS: range(0,31),
ARR: range(0,11),
Gravity: (function() {
var array = [];
array.push('Auto');
array.push('0G');
for (var i = 1; i < 64; i++)
array.push(i + '/64G');
for (var i = 1; i <= 20; i++)
array.push(i + 'G');
return array;
})(),
'Soft Drop': (function() {
var array = [];
for (var i = 1; i < 64; i++)
array.push(i + '/64G');
for (var i = 1; i <= 20; i++)
array.push(i + 'G');
return array;
})(),
'Lock Delay': range(0,101),
Size: ['Auto', 'Small', 'Medium', 'Large'],
Sound: ['Off', 'On'],
Volume: range(0, 101),
Block: ['Shaded', 'Solid', 'Glossy', 'Arika', 'World'],
Ghost: ['Normal', 'Colored', 'Off'],
Grid: ['Off', 'On'],
Outline: ['Off', 'On']
};
var frame;
var inc;
var gLoop;
var setLoop;
var cDown;
/**
* 0 = Normal
* 1 = win
* 9 = loss
*/
var gameState;
var paused = false;
var lineLimit;
var grabBag;
var toGreyRow;
var gametype;
var lastX, lastY, lastPos, landed, newPiece;
// Stats
var lines;
var piecesSet;
var startTime;
// Keys
var keysDown = 0;
var lastKeys;
var released = 255;
var shiftReleased = true;
var arrowReleased = true;
var arrowDelay = 0;
var binds = {
pause: 27,
moveLeft: 37,
moveRight: 39,
moveDown: 40,
hardDrop: 32,
holdPiece: 67,
rotRight: 88,
rotLeft: 90,
rot180: 16,
retry: 82
};
var flags = {
hardDrop: 1,
moveRight: 2,
moveLeft: 4,
moveDown: 8,
holdPiece: 16,
rotRight: 32,
rotLeft: 64,
rot180: 128,
};
var key = {
8: 'Backspace', 9: 'Tab', 13: 'Enter', 16: 'Shift',
17: 'Ctrl', 18: 'Alt', 19: 'Pause', 20: 'Caps Lock',
27: 'Esc', 32: 'Space', 33: 'PgUp', 34: 'PgDn',
35: 'End', 36: 'Home', 37: '←', 38: '↑',
39: '→', 40: '↓', 45: 'Insert', 46: 'Delete',
48: '0', 49: '1', 50: '2', 51: '3',
52: '4', 53: '5', 54: '6', 55: '7',
56: '8', 57: '9', 59: ';', 61: '=',
65: 'A', 66: 'B', 67: 'C', 68: 'D',
69: 'E', 70: 'F', 71: 'G', 72: 'H',
73: 'I', 74: 'J', 75: 'K', 76: 'L',
77: 'M', 78: 'N', 79: 'O', 80: 'P',
81: 'Q', 82: 'R', 83: 'S', 84: 'T',
85: 'U', 86: 'V', 87: 'W', 88: 'X',
89: 'Y', 90: 'Z', 96: '0kpad', 97: '1kpad',
98: '2kpad', 99: '3kpad', 100: '4kpad', 101: '5kpad',
102: '6kpad', 103: '7kpad', 104: '8kpad', 105: '9kpad',
106: '*', 107: '+', 109: '-', 110: '.',
111: '/', 112: 'F1', 113: 'F2', 114: 'F3',
115: 'F4', 116: 'F5', 117: 'F6', 118: 'F7',
119: 'F8', 120: 'F9', 121: 'F10', 122: 'F11',
123: 'F12', 173: '-', 187: '=', 188: ',',
190: '.', 191: '/', 192: '`', 219: '[',
220: '\\', 221: ']', 222: "'"
}
function resize() {
var a = document.getElementById('a');
var b = document.getElementById('b');
var c = document.getElementById('c');
var content = document.getElementById('content');
// TODO Finalize this.
// Aspect ratio: 1.024
var screenHeight = window.innerHeight - 34;
var screenWidth = ~~(screenHeight * 1.024);
if (screenWidth > window.innerWidth)
screenHeight = ~~(window.innerWidth / 1.024);
if (settings.Size === 1 && screenHeight > 602) cellSize = 15;
else if (settings.Size === 2 && screenHeight > 602) cellSize = 30;
else if (settings.Size === 3 && screenHeight > 902) cellSize = 45;
else cellSize = Math.max(~~(screenHeight / 20), 10);
var pad = (window.innerHeight - (cellSize * 20 + 2)) / 2 + 'px';
content.style.padding = pad + ' 0';
stats.style.bottom = pad;
// Size elements
a.style.padding = '0 0.5rem ' + ~~(cellSize / 2) + 'px';
stackCanvas.width = activeCanvas.width = bgStackCanvas.width = cellSize * 10;
stackCanvas.height = activeCanvas.height = bgStackCanvas.height = cellSize * 20;
b.style.width = stackCanvas.width + 'px';
b.style.height = stackCanvas.height + 'px';
holdCanvas.width = cellSize * 4;
holdCanvas.height = cellSize * 2;
a.style.width = holdCanvas.width + 'px';
a.style.height = holdCanvas.height + 'px';
previewCanvas.width = cellSize * 4;
previewCanvas.height = stackCanvas.height;
c.style.width = previewCanvas.width + 'px';
c.style.height = b.style.height;
// Scale the text so it fits in the thing.
// TODO get rid of extra font sizes here.
msg.style.lineHeight = b.style.height;
msg.style.fontSize = ~~(stackCanvas.width / 6) + 'px';
stats.style.fontSize = ~~(stackCanvas.width / 11) + 'px';
document.documentElement.style.fontSize = ~~(stackCanvas.width / 16) + 'px';
stats.style.width = a.style.width;
for (var i = 0, len = h3.length; i < len; i++) {
h3[i].style.lineHeight = a.style.height;
h3[i].style.fontSize = stats.style.fontSize;
}
// Redraw graphics
makeSprite();
if (settings.Grid === 1)
bg(bgStackCtx);
if (gameState === 0) {
if (!settings.Ghost) {
draw(fallingPiece.tetro, fallingPiece.x,
fallingPiece.y + fallingPiece.getDrop(22), activeCtx, 0);
} else if (settings.Ghost === 1) {
draw(fallingPiece.tetro, fallingPiece.x,
fallingPiece.y + fallingPiece.getDrop(22), activeCtx);
}
draw(fallingPiece.tetro, fallingPiece.x, fallingPiece.y, activeCtx);
drawStack();
drawPreview();
if (holdPiece) {
if (holdPiece === 0 || holdPiece === 3) {
draw(pieces[holdPiece].tetro, pieces[holdPiece].x - 3,
2 + pieces[holdPiece].y, holdCtx);
} else {
draw(pieces[holdPiece].tetro, pieces[holdPiece].x - 2.5,
2 + pieces[holdPiece].y, holdCtx);
}
}
}
}
addEventListener('resize', resize, false);
/**
* ========================== Model ===========================================
*/
function range(start, end, inc) {
inc = inc || 1;
var array = [];
for (var i = start; i < end; i += inc) {
array.push(i);
}
return array;
}
/**
* Add divisor method so we can do clock arithmetics. This is later used to
* determine tetromino orientation.
*/
Number.prototype.mod = function(n) {
return ((this % n) + n) % n;
};
window.requestAnimFrame = (function () {
return window.requestAnimationFrame ||
window.mozRequestAnimationFrame ||
window.webkitRequestAnimationFrame ||
function (callback) {
window.setTimeout(callback, 1000 / 60);
};
})();
/**
* Creates a matrix for the playfield.
*/
function newGrid(x, y) {
var cells = new Array(x);
for (var i = 0; i < x; i++) {
cells[i] = new Array(y);
}
return cells;
}
function unpause() {
paused = false;
msg.innerHTML = '';
menu();
}
/**
* Resets all the settings and starts the game.
*/
function init(gt) {
menu();
gameState = 2;
toGreyRow = 21;
frame = 0;
lastPos = 'reset';
clearTimeout(gLoop);
fallingPiece.reset();
inc = 0;
stack = newGrid(10, 22);
holdPiece = void 0;
if (settings.Gravity === 0) gravity = gravityUnit * 4;
startTime = Date.now();
//XXX fix ugly code lolwut
while (1) {
grabBag = randomGenerator();
if ([3,4,6].indexOf(grabBag[0]) === -1) break;
}
grabBag.push.apply(grabBag, randomGenerator());
gametype = gt;
if (gametype === 0) {
lineLimit = 40;
} else {
lineLimit = 150;
}
lines = 0;
piecesSet = 0;
statsPiece.innerHTML = piecesSet;
statsLines.innerHTML = lineLimit - lines;
statistics();
clear(stackCtx);
clear(activeCtx);
clear(holdCtx);
drawPreview();
gameLoop();
}
/**
* Creates a "grab bag" of the 7 tetrominos. The first
* drop of the first generation can not be an S, O, or Z piece.
*/
function randomGenerator() {
var pieceList = [0, 1, 2, 3, 4, 5, 6];
return pieceList.sort(function() {return 0.5 - Math.random()});
}
/**
* Checks if position and orientation passed is valid.
* We call it for every action instead of only once a frame in case one
* of the actions is still valid, we don't want to block it.
*/
function moveValid(cx, cy, tetro) {
cx = cx + fallingPiece.x;
cy = Math.floor(cy + fallingPiece.y);
for (var x = 0; x < tetro.length; x++) {
for (var y = 0; y < tetro[x].length; y++) {
if (tetro[x][y] &&
((cx + x < 0 || cx + x >= 10 || cy + y >= 22) ||
stack[cx + x][cy + y])) {
return false;
}
}
}
fallingPiece.lockDelay = 0;
return true;
}
/**
* Adds tetro to the stack, and clears lines if they fill up.
*/
function addPiece(tetro) {
// Add the piece to the stack, and check which lines are modified.
var range = [];
var valid = false;
for (var x = 0; x < tetro.length; x++) {
for (var y = 0; y < tetro[x].length; y++) {
if (tetro[x][y]) {
stack[x + fallingPiece.x][y + fallingPiece.y] = tetro[x][y];
if (range.indexOf(y + fallingPiece.y) === -1) {
range.push(y + fallingPiece.y);
// This checks if any cell is in the play field. If there
// isn't any this is called a lock out and the game ends.
if (y + fallingPiece.y > 1) valid = true;
}
}
}
}
// Lock out
if (!valid) {
gameState = 9;
msg.innerHTML = 'LOCK OUT!';
menu(3);
return;
}
// Check modified lines for full lines.
range = range.sort(function(a,b){return a-b});
for (var row = range[0], len = row + range.length; row < len; row++) {
var count = 0;
for (var x = 0; x < 10; x++) { // 10 is the stack width
if (stack[x][row]) count++;
}
// Clear the line. This basically just moves down the stack.
// TODO Ponder during the day and see if there is a more elegant solution.
if (count === 10) {
lines++; // NOTE stats
for (var y = row; y >= -1; y--) {
for (var x = 0; x < 10; x++) {
stack[x][y] = stack[x][y - 1];
}
}
}
}
piecesSet++; // NOTE Stats
statsPiece.innerHTML = piecesSet;
statsLines.innerHTML = lineLimit - lines;
// Redraw the stack.
drawStack();
}
/**
* Draws the stats next to the tetrion.
*/
function statistics() {
var thisFrame = Date.now();
var time = thisFrame - startTime;
// Seconds and minutes for displaying clock.
var seconds = (time / 1000 % 60).toFixed(2);
var minutes = ~~(time / 60000);
time = ((minutes < 10 ? '0' : '') + minutes) +
(seconds < 10 ? ':0' : ':') + seconds;
statsTime.innerHTML = time;
}
/**
* Main update function that runs every frame.
*/
function update() {
if (lastKeys !== keysDown) {
}
if (!fallingPiece.active) {
// TODO Do this better.
//for property in pieces, fallingpiece.prop = piece.prop
fallingPiece.tetro = pieces[grabBag[inc]].tetro;
fallingPiece.kickData = pieces[grabBag[inc]].kickData;
fallingPiece.x = pieces[grabBag[inc]].x;
fallingPiece.y = pieces[grabBag[inc]].y;
fallingPiece.index = pieces[grabBag[inc]].index;
fallingPiece.active = true;
newPiece = true;
// Determine if we need another grab bag.
if (inc < 6) {
inc++;
} else {
grabBag = grabBag.slice(-7);
grabBag.push.apply(grabBag, randomGenerator());
inc = 0;
}
// Check for blockout.
if (!moveValid(0, 0, fallingPiece.tetro)) {
gameState = 9;
msg.innerHTML = 'BLOCK OUT!';
menu(3);
} else {
drawPreview();
}
}
if (flags.rotLeft & keysDown && !(lastKeys & flags.rotLeft)) {
fallingPiece.rotate(-1);
} else if (flags.rotRight & keysDown && !(lastKeys & flags.rotRight)) {
fallingPiece.rotate(1);
} else if (flags.rot180 & keysDown && !(lastKeys & flags.rot180)) {
fallingPiece.rotate(1);
fallingPiece.rotate(1);
}
if (shift) {
// 1. When key pressed instantly move over once.
if (shiftReleased) {
fallingPiece.shift(shift);
fallingPiece.shiftDelay++;
shiftReleased = false;
// 2. Apply DAS delay
} else if (fallingPiece.shiftDelay < settings.DAS) {
fallingPiece.shiftDelay++;
// 3. Once the delay is complete, move over once.
// Inc delay so this doesn't run again.
} else if (fallingPiece.shiftDelay === settings.DAS && settings.DAS !== 0) {
fallingPiece.shift(shift);
if (settings.ARR !== 0) fallingPiece.shiftDelay++;
// 4. Apply ARR delay
} else if (fallingPiece.arrDelay < settings.ARR) {
fallingPiece.arrDelay++;
// 5. If ARR Delay is full, move piece, and reset delay and repeat.
} else if (fallingPiece.arrDelay === settings.ARR && settings.ARR !== 0) {
fallingPiece.shift(shift);
}
}
if (flags.moveDown & keysDown) {
fallingPiece.shiftDown();
}
if (!(lastKeys & flags.hardDrop) && flags.hardDrop & keysDown) {
fallingPiece.hardDrop();
}
if (!(lastKeys & flags.holdPiece) && flags.holdPiece & keysDown) {
fallingPiece.hold();
}
fallingPiece.update();
// Win
if (lines >= lineLimit) {
gameState = 1;
msg.innerHTML = 'GREAT!';
menu(3);
}
statistics();
if (lastKeys !== keysDown) {
lastKeys = keysDown;
}
}
var fallingPiece = new (function() {
this.x;
this.y;
this.pos = 0;
this.tetro;
this.index;
this.kickData;
this.lockDelay = 0;
this.shiftDelay = 0;
this.arrDelay = 0;
this.active = false;
this.held = false;
this.reset = function() {
this.pos = 0;
this.tetro = [];
this.active = false;
this.held = false;
landed = false;
}
this.rotate = function(direction) {
// Rotates the tetromino's matrix.
var rotated = [];
if (direction === -1) {
for (var i = this.tetro.length - 1; i >= 0; i--) {
rotated[i] = [];
for (var row = 0; row < this.tetro.length; row++) {
rotated[i][this.tetro.length - 1 - row] = this.tetro[row][i];
}
}
} else {
for (var i = 0; i < this.tetro.length; i++) {
rotated[i] = [];
for (var row = this.tetro.length - 1; row >= 0; row--) {
rotated[i][row] = this.tetro[row][this.tetro.length - 1 - i];
}
}
}
// Goes thorugh kick data until it finds a valid move.
var curPos = this.pos.mod(4);
var newPos = (this.pos + direction).mod(4);
for (var x = 0, len = this.kickData[0].length; x < len; x++) {
if (moveValid(
this.kickData[curPos][x][0] - this.kickData[newPos][x][0],
this.kickData[curPos][x][1] - this.kickData[newPos][x][1],
rotated
)) {
this.x += this.kickData[curPos][x][0] -
this.kickData[newPos][x][0];
this.y += this.kickData[curPos][x][1] -
this.kickData[newPos][x][1];
this.tetro = rotated;
this.pos = newPos;
break;
}
}
}
this.shift = function(direction) {
fallingPiece.arrDelay = 0;
if (settings.ARR === 0 && this.shiftDelay === settings.DAS) {
for (var i = 1; i < 10; i++) {
if (!moveValid(i * direction, 0, this.tetro)) {
this.x += i * direction - direction;
break;
}
}
} else if (moveValid(direction, 0, this.tetro)) {
this.x += direction;
}
}
this.shiftDown = function() {
if (moveValid(0, 1, this.tetro)) {
var grav = gravityArr[settings['Soft Drop'] + 1];
if (grav > 1)
this.y += this.getDrop(grav);
else
this.y += grav;
}
}
this.hardDrop = function() {
this.y += this.getDrop(20);
this.lockDelay = settings['Lock Delay'];
}
this.getDrop = function(distance) {
for (var i = 1; i <= distance; i++) {
if (!moveValid(0, i, this.tetro))
return i - 1;
}
return i - 1;
}
this.hold = function() {
if (!this.held) {
if (holdPiece !== void 0) {
var temp = holdPiece;
this.x = pieces[holdPiece].x;
this.y = pieces[holdPiece].y;
this.pos = 0;
this.tetro = pieces[holdPiece].tetro;
this.kickData = pieces[holdPiece].kickData;
holdPiece = this.index;
this.index = temp;
newPiece = true;
} else {
holdPiece = this.index;
this.reset();
}
this.held = true;
clear(holdCtx);
if (holdPiece === 0 || holdPiece === 3) {
draw(pieces[holdPiece].tetro, pieces[holdPiece].x - 3,
2 + pieces[holdPiece].y, holdCtx);
} else {
draw(pieces[holdPiece].tetro, pieces[holdPiece].x - 2.5,
2 + pieces[holdPiece].y, holdCtx);
}
}
}
this.update = function() {
if (moveValid(0, 1, this.tetro)) {
landed = false;
if (settings.Gravity) {
var grav = gravityArr[settings.Gravity - 1];
if (grav > 1)
this.y += this.getDrop(grav);
else
this.y += grav;
} else {
this.y += gravity;
}
} else {
landed = true;
this.y = Math.floor(this.y);
if (this.lockDelay >= settings['Lock Delay']) {
addPiece(this.tetro);
this.reset();
} else {
this.lockDelay++;
}
}
}
})();
// ========================== View ============================================
function bg(ctx) {
ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
ctx.fillStyle = '#1c1c1c';
for (var x = -1; x < ctx.canvas.width + 1; x += cellSize) {
ctx.fillRect(x, 0, 2, ctx.canvas.height);
}
for (var y = -1; y < ctx.canvas.height + 1; y += cellSize) {
ctx.fillRect(0, y, ctx.canvas.width, 2);
}
}
/**
* Draws a pre-rendered mino.
*/
function drawCell(x, y, color, ctx) {
x = x * cellSize;
x = ~~x;
y = ~~y * cellSize - 2 * cellSize;
ctx.drawImage(spriteCanvas, color * cellSize, 0, cellSize, cellSize, x, y, cellSize, cellSize);
}
/**
* Pre-renders all mino colors.
*/
function makeSprite() {
var shaded = [
// 0 +10 -10 -20
['#c1c1c1', '#dddddd', '#a6a6a6', '#8b8b8b'],
['#25bb9b', '#4cd7b6', '#009f81', '#008568'],
['#3397d9', '#57b1f6', '#007dbd', '#0064a2'],
['#e67e23', '#ff993f', '#c86400', '#a94b00'],
['#efc30f', '#ffdf3a', '#d1a800', '#b38e00'],
['#9ccd38', '#b9e955', '#81b214', '#659700'],
['#9c5ab8', '#b873d4', '#81409d', '#672782'],
['#e64b3c', '#ff6853', '#c62c25', '#a70010'],
['#898989', '#a3a3a3', '#6f6f6f', '#575757']
];
var glossy = [
//25 37 52 -21 -45
['#ffffff', '#ffffff', '#ffffff', '#888888', '#4d4d4d'],
['#7bffdf', '#9fffff', '#ccffff', '#008165', '#00442e'],
['#6cdcff', '#93feff', '#c2ffff', '#00629f', '#002c60'],
['#ffc166', '#ffe386', '#ffffb0', '#aa4800', '#650500'],
['#ffff6a', '#ffff8c', '#ffffb8', '#b68a00', '#714f00'],
['#efff81', '#ffffa2', '#ffffcd', '#6b9200', '#2c5600'],
['#dc9dfe', '#ffbeff', '#ffe9ff', '#5d287e', '#210043'],
['#ff9277', '#ffb497', '#ffe0bf', '#a7000a', '#600000'],
['#cbcbcb', '#ededed', '#ffffff', '#545454', '#1f1f1f']
];
var tgm = [
['#7b7b7b', '#303030', '#6b6b6b', '#363636'],
['#f08000', '#a00000', '#e86008', '#b00000'],
['#00a8f8', '#0000b0', '#0090e8', '#0020c0'],
['#f8a800', '#b84000', '#e89800', '#c85800'],
['#e8e000', '#886800', '#d8c800', '#907800'],
['#f828f8', '#780078', '#e020e0', '#880088'],
['#00e8f0', '#0070a0', '#00d0e0', '#0080a8'],
['#78f800', '#007800', '#58e000', '#008800'],
['#7b7b7b', '#303030', '#6b6b6b', '#363636'],
];
var world = [];
world[0] = tgm[0];
world[1] = tgm[6];
world[2] = tgm[2];
world[3] = tgm[3];
world[4] = tgm[4];
world[5] = tgm[7];
world[6] = tgm[5];
world[7] = tgm[1];
world[8] = tgm[8];
spriteCanvas.width = cellSize * 9;
spriteCanvas.height = cellSize;
for (var i = 0; i < 9; i++) {
var x = i * cellSize;
if (settings.Block === 0) {
// Shaded
spriteCtx.fillStyle = shaded[i][1];
spriteCtx.fillRect(x, 0, cellSize, cellSize);
spriteCtx.fillStyle = shaded[i][3];
spriteCtx.fillRect(x, cellSize / 2, cellSize, cellSize / 2);
spriteCtx.fillStyle = shaded[i][0];
spriteCtx.beginPath();
spriteCtx.moveTo(x, 0);
spriteCtx.lineTo(x + cellSize / 2, cellSize / 2);
spriteCtx.lineTo(x, cellSize);
spriteCtx.fill();
spriteCtx.fillStyle = shaded[i][2];
spriteCtx.beginPath();
spriteCtx.moveTo(x + cellSize, 0);
spriteCtx.lineTo(x + cellSize / 2, cellSize / 2);
spriteCtx.lineTo(x + cellSize, cellSize);
spriteCtx.fill();
} else if (settings.Block === 1) {
// Flat
spriteCtx.fillStyle = shaded[i][0];
spriteCtx.fillRect(x, 0, cellSize, cellSize);
} else if (settings.Block === 2) {
// Glossy
var k = Math.max(~~(cellSize * 0.083), 1);
var grad = spriteCtx.createLinearGradient(x, 0, x + cellSize, cellSize);
grad.addColorStop(0.5, glossy[i][3]);
grad.addColorStop(1, glossy[i][4]);
spriteCtx.fillStyle = grad;
spriteCtx.fillRect(x, 0, cellSize, cellSize);
var grad = spriteCtx.createLinearGradient(x, 0, x + cellSize, cellSize);
grad.addColorStop(0, glossy[i][2]);
grad.addColorStop(0.5, glossy[i][1]);
spriteCtx.fillStyle = grad;
spriteCtx.fillRect(x, 0, cellSize - k, cellSize - k);
var grad = spriteCtx.createLinearGradient(x + k, k, x + cellSize - k, cellSize - k);
grad.addColorStop(0, shaded[i][0]);
grad.addColorStop(0.5, glossy[i][0]);
grad.addColorStop(0.5, shaded[i][0]);
grad.addColorStop(1, glossy[i][0]);
spriteCtx.fillStyle = grad;
spriteCtx.fillRect(x + k, k, cellSize - k * 2, cellSize - k * 2);
} else if (settings.Block === 3 || settings.Block === 4) {
// Arika
if (settings.Block === 4) tgm = world;
var k = Math.max(~~(cellSize * 0.125), 1);
spriteCtx.fillStyle = tgm[i][1];
spriteCtx.fillRect(x, 0, cellSize, cellSize);
spriteCtx.fillStyle = tgm[i][0];
spriteCtx.fillRect(x, 0, cellSize, ~~(cellSize / 2));
var grad = spriteCtx.createLinearGradient(x, k, x, cellSize - k);
grad.addColorStop(0, tgm[i][2]);
grad.addColorStop(1, tgm[i][3]);
spriteCtx.fillStyle = grad;
spriteCtx.fillRect(x + k, k, cellSize - k*2, cellSize - k*2);
var grad = spriteCtx.createLinearGradient(x, k, x, cellSize);
grad.addColorStop(0, tgm[i][0]);
grad.addColorStop(1, tgm[i][3]);
spriteCtx.fillStyle = grad;
spriteCtx.fillRect(x, k, k, cellSize - k);
var grad = spriteCtx.createLinearGradient(x, 0, x, cellSize - k);
grad.addColorStop(0, tgm[i][2]);
grad.addColorStop(1, tgm[i][1]);
spriteCtx.fillStyle = grad;
spriteCtx.fillRect(x + cellSize - k, 0, k, cellSize - k);
}
}
}
/**
* Clear canvas.
*/
function clear(ctx) {
ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height);
}
/**
* Takes an array of minos and tells drawCell where to draw it.
*/
function draw(tetro, cx, cy, ctx, color) {
for (var x = 0, len = tetro.length; x < len; x++) {
for (var y = 0, wid = tetro[x].length; y < wid; y++) {
if (tetro[x][y]) drawCell(x + cx, y + cy, color !== void 0 ? color : tetro[x][y], ctx);
}
}
}
/**
* Draws the grabbag for the piece preview.
*/
function drawPreview() {
clear(previewCtx);
for (var i = 0; i < 6; i++) {
if (grabBag[inc + i] === 0 || grabBag[inc + i] === 3) {
draw(pieces[grabBag[inc + i]].tetro, pieces[grabBag[inc + i]].x - 3,
pieces[grabBag[inc + i]].y + 2 + i * 3, previewCtx);
} else {