初试javascript ：贪吃蛇啊

技术2022-05-11 162

好久没接触javascript，近日看了看，试试手

界面是参考 lxx8402的俄罗斯方块方法，觉得不错，借用了谢谢，不要P我

原码如下,写的仓促，也没有放积分，参数可以自己修改前面的默认值，

初次发布，恳请交流指教~~~*_*:

tcs.html:

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><HTML><HEAD><TITLE> New Document </TITLE><META NAME="Generator" CONTENT="EditPlus"><META NAME="Author" CONTENT=""><META NAME="Keywords" CONTENT=""><META NAME="Description" CONTENT=""><meta http-equiv="Content-Type" content="text/html; charset=gb2312"><STYLE>.btnup{ border-left:solid #ffffff 1px; border-top:solid #ffffff 1px; border-right:solid #828486 1px; border-bottom:solid #828486 1px; font-size: 9pt; cursor:default } tr{ font-family:"宋体"; font-size: 9pt; cursor: default}</STYLE></HEAD><SCRIPT LANGUAGE="JavaScript"><!--var row = 25,col = 25,size=16;var delay = 300;//移动延迟var paused = false;var end = falsevar TimerID;var s = new snake();var n = new nut();var nutad = new Array();nutad[0] = -1;nutad[1] = -1;var Color = new Array(5);Color[0] = "#d0d0d0";Color[1] = "red";Color[2] = "green"Color[3] = "blue";Color[4] = "yellow";var move_direction = new Array();var curr_direction = new Array();move_direction[0] = 1;move_direction[1] = 0;

//========================================//定义果实function nut(){ this.x = -1; this.y = -1;}

function nut_show(){ if (this.x<0 || this.y < 0 ) return; obj = document.all("Main" + this.x + "#" + this.y); obj.style.background = Color[2];}

function nut_eated(){ if (this.x<0 || this.y < 0) return; obj = document.all("Main" + this.x + "#" + this.y); obj.style.background = Color[0];}nut.prototype.create = nut_create;nut.prototype.show = nut_show;nut.prototype.eated = nut_eated;

//========================================//定义蛇体function snake(){ this.items = new Array();}

function snake_eat(nt){ var s_length = this.items.length; this.items[s_length] = nt;}

function snake_move(dir){ this.destroy(); var y = this.items[0].y; var x = this.items[0].x; var nx = x + dir[1]; var ny = y + dir[0]; if (nx <0 || nx >= row || ny <0 || ny >= col || crossed(nx,ny)) { end = true; return; } caneat(nx,ny); for (var i = this.items.length-1 ; i>=0 ; i --) {

if (i != 0) { this.items[i].move(this.items[i-1].x,this.items[i-1].y); } else { this.items[i].move(nx,ny); } } this.reload();}

function caneat(nx,ny){ if (nx == nutad[0] && ny == nutad[1]) { var lst = s.items[s.items.length-1]; var nd = new snakeNode(lst.x,lst.y); s.eat(nd); n.eated(); n.create(); }

}//禁止穿越自身节点function crossed( nx, ny ){ for (var i = 0; i<s.items.length; i++) { if (s.items[i].x == nx && s.items[i].y == ny) { return true; } } return false;}

function snake_reload(){ for (var i = 0 ; i<this.items.length ; i ++) { var curNode = this.items[i]; obj = document.all("Main" + curNode.x + "#" + curNode.y); obj.style.background = Color[1]; }}

function snake_destroy(){ for (var i = 0 ; i<this.items.length ; i ++) { var curNode = this.items[i]; obj = document.all("Main" + curNode.x + "#" + curNode.y); obj.style.background = Color[0]; }}

function snake_clear(){ this.destroy(); this.items = new Array();}

snake.prototype.eat = snake_eat;snake.prototype.move = snake_move;snake.prototype.reload = snake_reload;snake.prototype.destroy = snake_destroy;snake.prototype.clear = snake_clear;

//蛇体节点function snakeNode(x,y){ this.id = 0;//编号 this.x = x;//坐标X this.y = y;//坐标Y this.color = "#000000";}

function snakeNode_setC(d_color){ this.color = d_color;}

function snakeNode_move(dx,dy){ this.x = dx; this.y = dy;}

snakeNode.prototype.setColor = snakeNode_setC ;snakeNode.prototype.move = snakeNode_move ;

//========================================//程序界面//初始化主控制区function DrawArea(row,col,name){ var s = "<TABLE BORDER=1 cellspacing=0 cellpadding=1 bgcolor=" + Color[0] + ">"; for(var i=0; i<row; i++){ s = s + "<TR Height=" + size + ">"; for(var j=0; j<col; j++){ var id = name + i + "#" + j; s = s + "<TD Width=" + size + " class=btnup id=" + id; s = s + " style=/"background:" + Color[0] + "/"> </TD>" } s = s + "</TR>"; } s = s + "</TABLE>"; return s;}

//初始化function Init(){ MainArea.innerHTML = DrawArea(row,col,'Main');}

//==================================//程序控制区，用来接收输入、定义控制方法//控制输入function keyDown(){ switch(event.keyCode) { case 37: if (curr_direction[0] != -1) { move_direction[0] = -1; move_direction[1] = 0; } break; case 38: if (curr_direction[1] != -1) { move_direction[0] = 0; move_direction[1] = -1; } break; case 39: if (curr_direction[0] != 1) { move_direction[0] = 1; move_direction[1] = 0; } break; case 40: if (curr_direction[1] != 1) { move_direction[0] = 0; move_direction[1] = 1; } break; }}

function Begin(){ end = false; paused = false; s.clear(); for (var i = 8; i >=0 ; i--) { sn = new snakeNode(0,i); s.eat(sn); } n.eated(); n.create(); move_direction[0] = 1; move_direction[1] = 0; curr_direction[1] = s.items[1].x - s.items[0].x; curr_direction[0] = s.items[1].y - s.items[0].y; Start();}

//启动开关function Start(){ if (end) { s.reload(); alert("挂了！"); return; } window.clearInterval(TimerID); TimerID = window.setInterval("Run()",delay);}

//运行主体var d = true;function Run(){ if(paused) return; if(true){ window.clearInterval(TimerID); s.move(move_direction); curr_direction[1] = s.items[1].x - s.items[0].x; curr_direction[0] = s.items[1].y - s.items[0].y; Start(); } }

//暂停开关function Pause(){ if (paused) { paused = false; if (!end) { Run(); } } else { paused = true; }}

//结束function Over(){ end = true;}//--></SCRIPT><BODY BGCOLOR="#FFFFFF" οnlοad="Init()" οnkeydοwn="keyDown()" leftmargin="0" topmargin="0" marginwidth="0" marginheight="0"><TABLE border="0" cellspacing="0" cellpadding="0" align="center" width="80%"> <TR><TR valign="top" width="80%"> <TD><SPAN ID="MainArea"></SPAN></TD> <TD align="center"> <BUTTON ID="start" οnclick="Begin()">Start</BUTTON><br> <BUTTON ID="pause" οnclick="Pause()">pause</BUTTON><br> <BUTTON ID="over" οnclick="Over()">End</BUTTON><br> </TD></TR></TABLE></BODY></HTML>

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