Math.abs(shu) > 5){
var direction = (Math.abs(heng) > Math.abs(shu)) ? this.computeDir(1, heng):this.computeDir(0, shu);
switch(direction){
case 'left':
if(this.data.direction=='right')return;
break;
case 'right':
if(this.data.direction=='left')return;
break;
case 'top':
if(this.data.direction=='bottom')return;
break;
case 'bottom':
if(this.data.direction=='top')return;
break;
default:
}
this.setData({
startx:0,
starty:0,
endx:0,
endy:0,
direction:direction
})
}
},
computeDir: function(heng, num){
if(heng) return (num > 0) ? 'right' : 'left';
return (num > 0) ? 'bottom' : 'top';
},
creatFood:function(){
var x=Math.floor(Math.random()*this.data.rows);
var y=Math.floor(Math.random()*this.data.cols);
var ground= this.data.ground;
ground[x][y]=2;
this.setData({
ground:ground,
food:[x,y]
});
},
changeDirection:function(dir){
switch(dir){
case 'left':
return this.changeLeft();
break;
case 'right':
return this.changeRight();
break;
case 'top':
return this.changeTop();
break;
case 'bottom':
return this.changeBottom();
break;
default:
}
},
changeLeft:function(){
var arr=this.data.snake;
var len=this.data.snake.length;
var snakeHEAD=arr[len-1][1];
var snakeTAIL=arr[0];
var ground=this.data.ground;
ground[snakeTAIL[0]][snakeTAIL[1]]=0;
for(var i=0;i<len-1;i++){
arr[i]=arr[i+1];
};
var x=arr[len-1][0];
var y=arr[len-1][1]-1;
arr[len-1]=[x,y];
this.checkGame(snakeTAIL);
for(var i=1;i<len;i++){
ground[arr[i][0]][arr[i][1]]=1;
}
this.setData({
ground:ground,
snake:arr
});
return true;
},
changeRight:function(){
var arr=this.data.snake;
var len=this.data.snake.length;
var snakeHEAD=arr[len-1][1];
var snakeTAIL=arr[0];
var ground=this.data.ground;
ground[snakeTAIL[0]][snakeTAIL[1]]=0;
for(var i=0;i<len-1;i++){
arr[i]=arr[i+1];
};
var x=arr[len-1][0];
var y=arr[len-1][1]+1;
arr[len-1]=[x,y];
this.checkGame(snakeTAIL);
for(var i=1;i<len;i++){
ground[arr[i][0]][arr[i][1]]=1;
}
this.setData({
ground:ground,
snake:arr
});
// var y=this.data.snake[0][1];
// var x=this.data.snake[0][0];
// this.data.ground[x][y]=0;
// console.log(this.data.ground[x]);
// console.log(this.data.snake);
// for(var i=0;i<this.data.snake.length-1;i++){
// this.data.snake[i]=this.data.snake[i+1];
// }
// this.data.snake[this.data.snake.length-1][1]++;
// for(var j=1;j<this.data.snake.length;j++){
// this.data.ground[this.data.snake[j][0]][this.data.snake[j][1]]=1;
// }
return true;
},
changeTop:function(){
var arr=this.data.snake;
var len=this.data.snake.length;
var snakeHEAD=arr[len-1][1];
var snakeTAIL=arr[0];
var ground=this.data.ground;
ground[snakeTAIL[0]][snakeTAIL[1]]=0;
for(var i=0;i<len-1;i++){
arr[i]=arr[i+1];
};
var x=arr[len-1][0]-1;
var y=arr[len-1][1];
arr[len-1]=[x,y];
this.checkGame(snakeTAIL);
for(var i=1;i<len;i++){
ground[arr[i][0]][arr[i][1]]=1;
}
this.setData({
ground:ground,
snake:arr
});
return true;
},
changeBottom:function(){
var arr=this.data.snake;
var len=this.data.snake.length;
var snakeHEAD=arr[len-1];
var snakeTAIL=arr[0];
var ground=this.data.ground;
ground[snakeTAIL[0]][snakeTAIL[1]]=0;
for(var i=0;i<len-1;i++){
arr[i]=arr[i+1];
};
var x=arr[len-1][0]+1;
var y=arr[len-1][1];
arr[len-1]=[x,y];
this.checkGame(snakeTAIL);
for(var i=1;i<len;i++){
ground[arr[i][0]][arr[i][1]]=1;
}
this.setData({
ground:ground,
snake:arr
});
return true;
},
checkGame:function(snakeTAIL){
var arr=this.data.snake;
var len=this.data.snake.length;
var snakeHEAD=arr[len-1];
if(snakeHEAD[0]<0
关键词：微信小程序完成的贪吃蛇游戏【附源码】