452 lines
8.9 KiB
JavaScript
452 lines
8.9 KiB
JavaScript
var consts = require('./consts.js');
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var COLORS = consts.COLORS;
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var COLUMN_COUNT = consts.COLUMN_COUNT;
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/**
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Defined all shapes used in Tetris game.
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You can add more shapes if you wish.
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*/
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function ShapeL() {
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var state1 = [
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[1, 0],
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[1, 0],
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[1, 1]
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];
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var state2 = [
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[0, 0, 1],
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[1, 1, 1]
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];
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var state3 = [
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[1, 1],
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[0, 1],
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[0, 1]
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];
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var state4 = [
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[1, 1, 1],
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[1, 0, 0]
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];
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this.states = [state1, state2, state3, state4];
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this.x = 4;
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this.y = -3;
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this.originY = -3;
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this.flag = 'L';
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}
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function ShapeLR() {
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var state1 = [
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[0, 1],
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[0, 1],
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[1, 1]
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];
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var state2 = [
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[1, 1, 1],
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[0, 0, 1]
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];
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var state3 = [
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[1, 1],
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[1, 0],
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[1, 0]
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];
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var state4 = [
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[1, 0, 0],
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[1, 1, 1]
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];
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this.states = [state1, state2, state3, state4];
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this.x = 4;
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this.y = -3;
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this.originY = -3;
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this.flag = 'LR';
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}
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function ShapeO() {
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var state1 = [
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[1, 1],
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[1, 1]
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];
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this.states = [state1];
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this.x = 4;
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this.y = -2;
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this.originY = -2;
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this.flag = 'O';
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}
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function ShapeI() {
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var state1 = [
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[1],
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[1],
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[1],
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[1]
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];
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var state2 = [
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[1, 1, 1, 1]
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];
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this.states = [state1, state2];
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this.x = 5;
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this.y = -4;
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this.originY = -4;
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this.flag = 'I';
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}
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function ShapeT() {
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var state1 = [
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[1, 1, 1],
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[0, 1, 0]
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];
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var state2 = [
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[1, 0],
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[1, 1],
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[1, 0]
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];
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var state3 = [
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[0, 1, 0],
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[1, 1, 1]
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];
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var state4 = [
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[0, 1],
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[1, 1],
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[0, 1]
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];
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this.states = [state1, state2, state3, state4];
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this.x = 4;
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this.y = -2;
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this.originY = -2;
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this.flag = 'T';
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}
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function ShapeZ() {
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var state1 = [
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[1, 1, 0],
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[0, 1, 1]
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];
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var state2 = [
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[0, 1],
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[1, 1],
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[1, 0]
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];
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this.states = [state1, state2];
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this.x = 4;
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this.y = -2;
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this.originY = -2;
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this.flag = 'Z';
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}
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function ShapeZR() {
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var state1 = [
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[0, 1, 1],
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[1, 1, 0]
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];
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var state2 = [
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[1, 0],
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[1, 1],
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[0, 1]
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];
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this.states = [state1, state2];
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this.x = 4;
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this.y = -2
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this.originY = -2;
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this.flag = 'ZR';
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}
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/**
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Is shape can move
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@param shape: tetris shape
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@param matrix: game matrix
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@param action: 'left','right','down','rotate'
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*/
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var isShapeCanMove = function(shape, matrix, action) {
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var rows = matrix.length;
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var cols = matrix[0].length;
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var rotationDirection = 0;
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var isBoxCanMove = function(box) {
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var x = shape.x + box.x;
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var y = shape.y + box.y;
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if (y < 0) {
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return true;
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}
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if (action === 'left') {
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x -= 1;
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return x >= 0 && x < cols && matrix[y][x] == 0;
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} else if (action === 'right') {
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x += 1;
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return x >= 0 && x < cols && matrix[y][x] == 0;
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} else if (action === 'down') {
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y += 1;
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return y < rows && matrix[y][x] == 0;
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} else if (action === 'rotate') {
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rotationDirection = 1;
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return y < rows && !matrix[y][x];
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} else if (action === 'rotateclockwise') {
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rotationDirection = -1;
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return y < rows && !matrix[y][x];
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}
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};
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//var boxes = action === 'rotate'?shape.getBoxes(shape.nextState()) : shape.getBoxes(shape.state);
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var boxes;
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if(rotationDirection != 0)
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boxes = shape.getBoxes(shape.nextState(rotationDirection));
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else
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boxes = shape.getBoxes(shape.state);
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for (var i in boxes) {
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if (!isBoxCanMove(boxes[i])) {
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return false;
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}
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}
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return true;
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};
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/**
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All shapes shares the same method, use prototype for memory optimized
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*/
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ShapeL.prototype =
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ShapeLR.prototype =
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ShapeO.prototype =
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ShapeI.prototype =
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ShapeT.prototype =
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ShapeZ.prototype =
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ShapeZR.prototype = {
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init: function(result) {
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this.color = COLORS[result];
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this.state = 0;
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this.allBoxes = {};
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this.y = 0;
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},
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// Get boxes matrix which composite the shape
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getBoxes: function(state) {
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var boxes = this.allBoxes[state] || [];
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if (boxes.length) {
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return boxes;
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}
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var matrix = this.matrix(state);
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for (var i = 0; i < matrix.length; i++) {
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var row = matrix[i];
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for (var j = 0; j < row.length; j++) {
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if (row[j] === 1) {
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boxes.push({
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x: j,
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y: i
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});
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}
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}
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}
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this.allBoxes[state] = boxes;
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return boxes;
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},
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//Get matrix for specified state
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matrix: function(state) {
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var st = state !== undefined ? state : this.state;
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return this.states[st];
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},
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//Rotate shape
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rotate: function(matrix) {
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if (isShapeCanMove(this,matrix,'rotate')){
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this.state = this.nextState(1);
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//fix position if shape is out of right border
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var right = this.getRight();
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if ( right >= COLUMN_COUNT){
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this.x -= right - COLUMN_COUNT + 1;
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}
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/*var left = this.getLeft();
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if(left <= 0)
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this.x += 1;*/
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}
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},
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//Rotate shape clockwise
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rotateClockwise: function(matrix) {
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if (isShapeCanMove(this, matrix, 'rotateclockwise')) {
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this.state = this.nextState(-1);
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//fix position if shape is out of right border
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var right = this.getRight();
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if (right >= COLUMN_COUNT) {
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this.x -= right - COLUMN_COUNT + 1;
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}
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}
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},
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//Caculate the max column of the shape
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getColumnCount: function() {
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var mtx = this.matrix();
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var colCount = 0;
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for (var i = 0; i < mtx.length; i++) {
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colCount = Math.max(colCount, mtx[i].length);
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}
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return colCount;
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},
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//Caculate the max row of the shape
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getRowCount: function() {
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return this.matrix().length;
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},
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//Get the right pos of the shape
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getRight: function() {
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var boxes = this.getBoxes(this.state);
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var right = 0;
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for (var i in boxes) {
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right = Math.max(boxes[i].x, right);
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}
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return this.x + right;
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},
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//Return the next state of the shape
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nextState: function(direction) {
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var rotate = this.state;
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rotate += direction;
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if(rotate < 0)
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return this.states.length - 1;
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return rotate % this.states.length;
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},
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//Check if the shape can move down
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canDown: function(matrix) {
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return isShapeCanMove(this, matrix, 'down');
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},
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//Move the shape down
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goDown: function(matrix) {
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if (isShapeCanMove(this, matrix, 'down')) {
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this.y += 1;
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}
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},
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//Move the shape to the Bottommost
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bottomAt: function(matrix) {
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var save = this.y;
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var ret;
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while (isShapeCanMove(this, matrix, 'down')) {
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this.y += 1;
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}
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ret = this.y;
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this.y = save;
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return ret;
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},
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//Move the shape to the Bottommost
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goBottom: function(matrix) {
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while (isShapeCanMove(this, matrix, 'down')) {
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this.y += 1;
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}
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},
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//Move the shape to the left
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goLeft: function(matrix) {
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if (isShapeCanMove(this, matrix, 'left')) {
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this.x -= 1;
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}
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},
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//Move the shape to the right
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goRight: function(matrix) {
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if (isShapeCanMove(this, matrix, 'right')) {
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this.x += 1;
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}
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},
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//Copy the shape data to the game data
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copyTo: function(matrix) {
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var smatrix = this.matrix();
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for (var i = 0; i < smatrix.length; i++) {
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var row = smatrix[i];
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for (var j = 0; j < row.length; j++) {
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if (row[j] === 1) {
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var x = this.x + j;
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var y = this.y + i;
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if (x >= 0 && x < matrix[0].length && y >= 0 && y < matrix.length) {
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matrix[y][x] = this.color;
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}
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}
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}
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}
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},
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resetOrigin: function() {
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this.y = this.originY + 1;
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}
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}
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/**
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Create a random shape for game
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*/
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// Handles randomly generating and returning a tetromino
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var RandomGenerator = {
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bag: [],
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getTetrimino() {
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if (this.bag.length === 0) {
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this.bag = this.generateNewBag();
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}
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return this.bag.shift();
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},
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generateNewBag() {
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//var tetrominoes = ['I', 'J', 'L', 'O', 'S', 'T', 'Z'];
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var tetrominoes = ['0', '1', '2', '3', '4', '5', '6'];
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//var tetrominoes = ['L','L','L','L','L','L','L',];
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var bag = [];
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for (var i = 7; i > 0; i--) {
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var tetrominoIndex = Math.floor(Math.random() * i);
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bag.push(tetrominoes[tetrominoIndex]);
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tetrominoes.splice(tetrominoIndex, 1);
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}
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return bag;
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}
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};
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function randomShape() {
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var result = parseInt(RandomGenerator.getTetrimino(),10);//Math.floor(Math.random() * 7);
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var shape;
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switch (result) {
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case 0:
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shape = new ShapeL();
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break;
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case 1:
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shape = new ShapeO();
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break;
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case 2:
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shape = new ShapeZ();
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break;
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case 3:
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shape = new ShapeT();
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break;
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case 4:
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shape = new ShapeLR();
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break;
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case 5:
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shape = new ShapeZR();
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break;
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case 6:
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shape = new ShapeI();
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break;
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}
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shape.init(result);
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return shape;
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}
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module.exports.randomShape = randomShape; |