<!DOCTYPE html>
<html>
<head lang="en">
<meta charset="UTF-8">
<title>微信小游戏-转你妹</title>
</head>
<body>
<div>
<canvas width="600" height="600" id="canvas" style="border:1px solid red;"></canvas>
<script>
var canvas = document.getElementById('canvas');
var cxt = canvas.getContext('2d');
var index = 0;
var timer;
var iStop = false;
var ladderLen = 60;
var outerLen = 200;
var boxLen = 20;
var score = 0;
var isCal = false;
var ladderA = {'degree':0, 'boxes':[{'index':1,'color':'red'}, {'index':2,'color':'green'}]};
var ladderB = {'degree':60, 'boxes':[{'index':1,'color':'yellow'}]};
var ladderC = {'degree':120, 'boxes':[]};
var ladderD = {'degree':180, 'boxes':[]};
var ladderE = {'degree':240, 'boxes':[]};
var ladderF = {'degree':300, 'boxes':[{'index':1,'color':'blue'}]};
var ladderX = [{'degree':300, 'index':7, 'color':'red'}, {'degree':240, 'index':7, 'color':'red'}];
var colors = ['yellow', 'blue', 'green', 'red'];
function drawBg(){
/*********外部六边形**********/
cxt.save();
cxt.beginPath();
cxt.fillStyle = 'gray';
cxt.translate(300, 300);
cxt.moveTo(outerLen, 0);
cxt.rotate(60*Math.PI/180);
cxt.lineTo(outerLen, 0);
cxt.rotate(60*Math.PI/180);
cxt.lineTo(outerLen, 0);
cxt.rotate(60*Math.PI/180);
cxt.lineTo(outerLen, 0);
cxt.rotate(60*Math.PI/180);
cxt.lineTo(outerLen, 0);
cxt.rotate(60*Math.PI/180);
cxt.lineTo(outerLen, 0);
cxt.closePath();
cxt.fill();
cxt.restore();
/********内部六边形***********/
cxt.save();
cxt.beginPath();
cxt.translate(300, 300);
cxt.moveTo(ladderLen, 0);
cxt.rotate(60*Math.PI/180);
cxt.lineTo(ladderLen, 0);
cxt.rotate(60*Math.PI/180);
cxt.lineTo(ladderLen, 0);
cxt.rotate(60*Math.PI/180);
cxt.lineTo(ladderLen, 0);
cxt.rotate(60*Math.PI/180);
cxt.lineTo(ladderLen, 0);
cxt.rotate(60*Math.PI/180);
cxt.lineTo(ladderLen, 0);
cxt.closePath();
cxt.fill();
cxt.restore();
}
function drawLadder(ladderA){
for(var i=0; i<ladderA.boxes.length; i++){
cxt.save();
cxt.translate(300, 300);
cxt.fillStyle = ladderA.boxes[i].color;
cxt.beginPath();
cxt.rotate(ladderA.degree*Math.PI/180);
cxt.moveTo(ladderLen + (ladderA.boxes[i].index - 1)*boxLen, 0);
cxt.lineTo(ladderLen + ladderA.boxes[i].index*boxLen, 0);
cxt.rotate(60*Math.PI/180);
cxt.lineTo(ladderLen + ladderA.boxes[i].index*boxLen, 0);
cxt.lineTo(ladderLen + (ladderA.boxes[i].index - 1)*boxLen, 0);
cxt.closePath();
cxt.fill();
cxt.restore();
}
}
// 画下落的梯形
function drawX(){
isCal = true;
var _ladderX = [];
for(var i=0; i<ladderX.length; i++){
cxt.save();
cxt.translate(300, 300);
cxt.fillStyle = ladderX[i].color;
cxt.beginPath();
cxt.rotate(ladderX[i].degree * Math.PI / 180);
cxt.moveTo(ladderLen + (ladderX[i].index - 1) * boxLen, 0);
cxt.lineTo(ladderLen + ladderX[i].index * boxLen, 0);
cxt.rotate(60 * Math.PI / 180);
cxt.lineTo(ladderLen + ladderX[i].index * boxLen, 0);
cxt.lineTo(ladderLen + (ladderX[i].index - 1) * boxLen, 0);
cxt.closePath();
cxt.fill();
cxt.restore();
var isDel = false;
var _ladder = qryLadder(ladderX[i].degree);
if(_ladder.boxes.length == 0){
if(ladderX[i].index == 1){
isDel = true;
_ladder.boxes.push({'index':ladderX[i].index,'color':ladderX[i].color});
getScore();
}
}else if(_ladder.boxes.length == 7 && ladderX[i].index == 7){
iStop = true;
alert('game over!');
}else if((_ladder.boxes[_ladder.boxes.length-1].index + 1) == ladderX[i].index){
isDel = true;
_ladder.boxes.push({'index':ladderX[i].index,'color':ladderX[i].color});
getScore();
}
if(!isDel){
_ladderX.push(ladderX[i]);
}
if(index%20 == 0){
ladderX[i].index -= 1;
}
}
ladderX = _ladderX;
if(ladderX.length == 0){
randomX();
}
isCal = false;
}
// 随机下落的梯形
function randomX(){
ladderX = [];
var degree = Math.floor(Math.random()*6)*60;
var color = colors[Math.floor(Math.random()*4)];
var num = Math.round(Math.random()*3);
for(var i=0; i<num; i++){
var _degree = degree + i*60;
if(_degree >= 360){
_degree -= 360;
}
ladderX.push({'degree':_degree, 'index':7, 'color':color});
}
console.log(ladderX);
}
// 根据degree查找对应的梯形
function qryLadder(degree){
if(ladderA.degree == degree){
return ladderA;
}
if(ladderB.degree == degree){
return ladderB;
}
if(ladderC.degree == degree){
return ladderC;
}
if(ladderD.degree == degree){
return ladderD;
}
if(ladderE.degree == degree){
return ladderE;
}
if(ladderF.degree == degree){
return ladderF;
}
}
function draw(){
drawBg();
drawLadder(ladderA);
drawLadder(ladderB);
drawLadder(ladderC);
drawLadder(ladderD);
drawLadder(ladderE);
drawLadder(ladderF);
drawX();
drawScore();
}
function erase(){
cxt.clearRect(0, 0, canvas.width, canvas.height);
}
function add60(ladder){
if(ladder.degree == 300){
ladder.degree = 0;
}else{
ladder.degree += 60;
}
}
function del60(ladder){
if(ladder.degree == 0){
ladder.degree = 300;
}else{
ladder.degree -= 60;
}
}
function getScore(){
var minLen = ladderA.boxes.length;
minLen = ladderB.boxes.length<minLen?ladderB.boxes.length:minLen;
minLen = ladderC.boxes.length<minLen?ladderC.boxes.length:minLen;
minLen = ladderD.boxes.length<minLen?ladderD.boxes.length:minLen;
minLen = ladderE.boxes.length<minLen?ladderE.boxes.length:minLen;
minLen = ladderF.boxes.length<minLen?ladderF.boxes.length:minLen;
score += minLen*10;
for(var i=0; i<minLen; i++){
ladderA.boxes.shift();
for(var j=0; j<ladderA.boxes.length; j++){
ladderA.boxes[j].index --;
}
ladderB.boxes.shift();
for(var j=0; j<ladderB.boxes.length; j++){
ladderB.boxes[j].index --;
}
ladderC.boxes.shift();
for(var j=0; j<ladderC.boxes.length; j++){
ladderC.boxes[j].index --;
}
ladderD.boxes.shift();
for(var j=0; j<ladderD.boxes.length; j++){
ladderD.boxes[j].index --;
}
ladderE.boxes.shift();
for(var j=0; j<ladderE.boxes.length; j++){
ladderE.boxes[j].index --;
}
ladderF.boxes.shift();
for(var j=0; j<ladderF.boxes.length; j++){
ladderF.boxes[j].index --;
}
}
}
function drawScore(){
cxt.save();
cxt.font="40px Verdana";
cxt.fillStyle = 'skyblue';
cxt.fillText(score + "", 280, 314);
cxt.restore();
}
var last = new Date();
document.onkeydown = (function(e){
var now = new Date();
if((now.getTime() - last.getTime()) < 200 || isCal){
return;
}
last = now;
switch(e.which){
case 39:
del60(ladderA);
del60(ladderB);
del60(ladderC);
del60(ladderD);
del60(ladderE);
del60(ladderF);
break;
case 37:
add60(ladderA);
add60(ladderB);
add60(ladderC);
add60(ladderD);
add60(ladderE);
add60(ladderF);
break;
}
});
window.requestAnimationFrame =
window.requestAnimationFrame ||
window.mozRequestAnimationFrame ||
window.webkitRequestAnimationFrame ||
window.msRequestAnimationFrame;
window.cancelRequestAnimationFrame =
window.cancelRequestAnimationFrame ||
window.mozCancelRequestAnimationFrame ||
window.webkitCancelRequestAnimationFrame ||
window.msCancelRequestAnimationFrame;
function animate() {
index ++;
erase();
draw();
if(iStop){
cancelRequestAnimationFrame(timer);
}else{
timer = requestAnimationFrame(animate);
}
}
animate();
</script>
</div>
</body>
</html>原文地址：http://blog.csdn.net/tianma630/article/details/46376129
