使用CocosCreator完成2048小游戏demo

在上一周，学习了二维数组的基本思路，老师让我们回来完成一个2048的小游戏，所以本文就记录这个demo的完成流程

--案例展示--

编辑器场景搭建以及方块预制体的制作
脚本文件

block.js——挂载在block预制体上的脚本

import colors from 'color';
cc.Class({extends: cc.Component,properties: {numberLabel:cc.Label,},// LIFE-CYCLE CALLBACKS:// onLoad () {},start () {},setNumber(number){if(number == 0){this.numberLabel.node.active = false;}this.numberLabel.string = number;if(number in colors){this.node.color = colors[number];}}// update (dt) {},
});

color.js——方块颜色的控制脚本

var colors = [];
colors[0] = cc.color(198,184,172,255);
colors[2] = cc.color(235,224,213,255);
colors[4] = cc.color(234,219,193,255);
colors[8] = cc.color(240,167,110,255);
colors[16] = cc.color(244,138,89,255);
colors[32] = cc.color(245,112,85,255);
colors[64] = cc.color(245,83,52,255);
colors[128] = cc.color(234,200,103,255);
colors[256] = cc.color(234,197,87,255);
colors[512] = cc.color(234,192,71,255);
colors[1024] = cc.color(146,208,80,255);
colors[2048] = cc.color(0,176,240,255);module.exports = colors;

game.js——游戏的流程控制脚本

const ROWS = 4;
const NUMBERS = [2, 4];
const MIN_LENGTH = 50;
const MOVE_DURATION = 0.1;cc.Class({extends: cc.Component,properties: {scoreLabel: cc.Label,score: 0,blockPrefab: cc.Prefab,gap: 20,bg: cc.Node,},// LIFE-CYCLE CALLBACKS:// onLoad () {},start() {this.drawBgBlocks();//create Blocksthis.init();this.addEventHandler();//touch Click},drawBgBlocks() {this.blockSize = (cc.winSize.width - this.gap * (ROWS + 1)) / ROWS;let x = this.gap + this.blockSize / 2;//block.positionlet y = this.blockSize;this.positions = [];for (let i = 0; i < ROWS; ++i) {this.positions.push([0, 0, 0, 0]);for (let j = 0; j < ROWS; ++j) {let block = cc.instantiate(this.blockPrefab);block.width = this.blockSizeblock.height = this.blockSizethis.bg.addChild(block);block.setPosition(cc.v2(x, y));this.positions[i][j] = cc.v2(x, y);//存入格子位置数据x += this.gap + this.blockSize;block.getComponent('block').setNumber(0);}y += this.gap + this.blockSize;x = this.gap + this.blockSize / 2;}},init() {this.updateScore(0);if (this.blocks) {for (let i = 0; i < this.blocks.length; ++i) {for (let j = 0; j < this.blocks[i].length; ++j) {if (this.blocks[i][j] != null) {this.blocks[i][j].destroy();}}}}this.data = [];this.blocks = [];for (let i = 0; i < ROWS; ++i) {this.blocks.push([null, null, null, null]);this.data.push([0, 0, 0, 0]);}this.addBlock();this.addBlock();this.addBlock();},updateScore(number) {this.score = number;this.scoreLabel.string = '分数: ' + number;},getEmptyLocations() {let locations = [];for (let i = 0; i < this.blocks.length; ++i) {for (let j = 0; j < this.blocks[i].length; ++j) {if (this.blocks[i][j] == null) {locations.push({ x: i, y: j });}}}return locations;},addBlock() {let locations = this.getEmptyLocations();if (locations.length == 0) return false;let location = locations[Math.floor(Math.random() * locations.length)];let x = location.xlet y = location.y;let position = this.positions[x][y];let block = cc.instantiate(this.blockPrefab);block.width = this.blockSizeblock.height = this.blockSizethis.bg.addChild(block);block.setPosition(position);let number = NUMBERS[Math.floor(Math.random() * NUMBERS.length)]block.getComponent('block').setNumber(number);this.blocks[x][y] = block;this.data[x][y] = number;return true;},addEventHandler() {this.bg.on('touchstart', (event) => {this.startPoint = event.getLocation();});this.bg.on('touchend', (event) => {this.endPoint = event.getLocation();let vec = this.endPoint.sub(this.startPoint);if (vec.mag() > MIN_LENGTH) {if (Math.abs(vec.x) > Math.abs(vec.y)) {//xif (vec.x > 0) {this.moveRight();} else {this.moveLeft();}} else {//yif (vec.y > 0) {this.moveUp();} else {this.moveDown();}}}})},afterMove(hasMove) {if (hasMove == true) {this.addBlock();}},doMove(block, position, callback) {let action = cc.moveTo(MOVE_DURATION, position)let finish = cc.callFunc(() => {callback && callback()});cc.tween(block)//tween Action.then(action).then(finish).start()},moveLeft() {cc.log("left");let hasMove = false;let move = (x, y, callback) => {if (y == 0 || this.data[x][y] == 0) {callback && callback();return;} else if (this.data[x][y - 1] == 0) {//movelet block = this.blocks[x][y];let position = this.positions[x][y - 1];this.blocks[x][y - 1] = block;this.data[x][y - 1] = this.data[x][y];this.data[x][y] = 0;this.blocks[x][y] = null;this.doMove(block, position, () => {move(x, y - 1, callback);});hasMove = true;} else if (this.data[x][y - 1] == this.data[x][y]) {//addlet block = this.blocks[x][y];let position = this.positions[x][y - 1];this.data[x][y - 1] *= 2;this.data[x][y] = 0;this.blocks[x][y] = null;this.blocks[x][y-1].getComponent('block').setNumber(this.data[x][y- 1]);this.doMove(block, position, () => {block.destroy();callback && callback()});hasMove = true;} else {callback && callback();return;}}let toMove = [];for (let i = 0; i < ROWS; ++i) {for (let j = 0; j < ROWS; ++j) {if (this.data[i][j] != 0) {toMove.push({ x: i, y: j })}}}let counter = 0;for (let i = 0; i < toMove.length; ++i) {move(toMove[i].x, toMove[i].y, () => {counter++;if (counter == toMove.length) {this.afterMove(hasMove);}});}},moveRight() {cc.log("right");let hasMove = false;let move = (x, y, callback) => {if (y == 3 || this.data[x][y] == 0) {callback && callback();return;} else if (this.data[x][y + 1] == 0) {//movelet block = this.blocks[x][y];let position = this.positions[x][y + 1];this.blocks[x][y + 1] = block;this.data[x][y + 1] = this.data[x][y];this.data[x][y] = 0;this.blocks[x][y] = null;this.doMove(block, position, () => {move(x, y+1, callback);});hasMove = true;} else if (this.data[x][y + 1] == this.data[x][y]) {//addlet block = this.blocks[x][y];let position = this.positions[x][y + 1];this.data[x][y + 1] *= 2;this.data[x][y] = 0;this.blocks[x][y] = null;this.blocks[x][y+1].getComponent('block').setNumber(this.data[x][y+1]);this.doMove(block, position, () => {block.destroy();callback && callback()});hasMove = true;} else {callback && callback();return;}}let toMove = [];for (let i = ROWS - 1; i >= 0; --i) {for (let j = 0; j < ROWS; ++j) {if (this.data[i][j] != 0) {toMove.push({ x: i, y: j })}}}let counter = 0;for (let i = 0; i < toMove.length; ++i) {move(toMove[i].x, toMove[i].y, () => {counter++;if (counter == toMove.length) {this.afterMove(hasMove);}});}},moveUp() {cc.log("up");let hasMove = false;let move = (x, y, callback) => {if (x == 3 || this.data[x][y] == 0) {callback && callback();return;} else if (this.data[x + 1][y] == 0) {//movelet block = this.blocks[x][y];let position = this.positions[x + 1][y];this.blocks[x + 1][y] = block;this.data[x + 1][y] = this.data[x][y];this.data[x][y] = 0;this.blocks[x][y] = null;this.doMove(block, position, () => {move(x, y + 1, callback);});hasMove = true;} else if (this.data[x + 1][y] == this.data[x][y]) {//addlet block = this.blocks[x][y];let position = this.positions[x + 1][y];this.data[x + 1][y] *= 2;this.data[x][y] = 0;this.blocks[x][y] = null;this.blocks[x+1][y].getComponent('block').setNumber(this.data[x+1][y]);this.doMove(block, position, () => {block.destroy();callback && callback()});hasMove = true;} else {callback && callback();return;}}let toMove = [];for (let i = 0; i < ROWS; ++i) {for (let j = ROWS - 1; j >= 0; --j) {if (this.data[i][j] != 0) {toMove.push({ x: i, y: j })}}}let counter = 0;for (let i = 0; i < toMove.length; ++i) {move(toMove[i].x, toMove[i].y, () => {counter++;if (counter == toMove.length) {this.afterMove(hasMove);}});}},moveDown() {cc.log("down");let hasMove = false;let move = (x, y, callback) => {if (x == 0 || this.data[x][y] == 0) {callback && callback();return;} else if (this.data[x - 1][y] == 0) {//movelet block = this.blocks[x][y];let position = this.positions[x - 1][y];this.blocks[x - 1][y] = block;this.data[x - 1][y] = this.data[x][y];this.data[x][y] = 0;this.blocks[x][y] = null;this.doMove(block, position, () => {move(x, y + 1, callback);});hasMove = true;} else if (this.data[x - 1][y] == this.data[x][y]) {//addlet block = this.blocks[x][y];let position = this.positions[x - 1][y];this.data[x - 1][y] *= 2;this.data[x][y] = 0;this.blocks[x][y] = null;this.blocks[x-1][y].getComponent('block').setNumber(this.data[x-1][y]);this.doMove(block, position, () => {block.destroy();callback && callback()});hasMove = true;} else {callback && callback();return;}}let toMove = [];for (let i = 0; i < ROWS; ++i) {for (let j = 0; j <ROWS; ++j) {if (this.data[i][j] != 0) {toMove.push({ x: i, y: j })}}}let counter = 0;for (let i = 0; i < toMove.length; ++i) {move(toMove[i].x, toMove[i].y, () => {counter++;if (counter == toMove.length) {this.afterMove(hasMove);}});}},// update (dt) {},
});

那么到此，就完成了这个2048demo的基本操作(移动，合成等)如果你有兴趣那么可以在后续添加分数，死亡等游戏判定

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