<?php class snake {
/** * 构造方法 */ public function __construct() {
$this ->app = "http://" . $_SERVER [ 'HTTP_HOST' ] . $_SERVER [ 'PHP_SELF' ]; } /** * 读取session模拟的虚拟缓存显示到屏幕上 * [url=home.php?mod=space&uid=155549]@Return[/url] html */ public function print () {
$score = ! $this ->get( "score" ) ? 0 : $this ->get( "score" ); //得分 //html长字符串 $html = <<<MAP_STRING <meta charset= "utf-8" > <meta http-equiv= "X-UA-Compatible" content= "IE=edge" /> <meta name= "viewport" content= "width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" /> <title>snake</title> <style> table{
background-color:#000; } table td{
padding:1px 1px 1px 1px; width:16px;height:12px; color:red; } table tr{
background-color:#000; } .sn{
background:#fff; } .bright{background:#fff;} button{font-size:20px;} marquee{width:400px;height:400px;font-size:50px;color:red;background:#000;text-align:center;} </style> <p>php贪吃蛇->[分数:{
$score }]</p> MAP_STRING; $map = "<table>" ; //初始化高亮区域$bright,包括蛇体和食物 if (! $this ->get( "snake" )) {
$bright = []; } else {
$bright = array_merge ( $this ->get( "snake" ), [ $this ->get( "food" )]); } //标记蛇体和食物高亮 for ( $i = 0; $i < 30; $i ++) {
$map .= "<tr>" ; for ( $j = 0; $j < 30; $j ++) {
if (in_array([ $j , $i ], $bright )) {
$map .= "<td class='bright'></td>" ; } else {
$map .= "<td></td>" ; } } $map .= "</tr>" ; } $map .= "</table>" ; //控制区域长字符串 $controll = <<<CONTROLL <a href= "{$this->app}?isOn=on" ><button>start</button></a> ........................ <a href= "{$this->app}?isOn=on&direction=up" ><button>up</button></a> <br><a href= "{$this->app}?isOn=off" ><button>stop</button></a> ............... <a href= "{$this->app}?isOn=on&direction=left" ><button>left</button></a> <a href= "{$this->app}?isOn=on&direction=right" ><button>right</button></a> <br>............................................ <a href= "{$this->app}?isOn=on&direction=down" ><button>down</button></a> CONTROLL; if (isset( $_GET [ "isOn" ]) && $_GET [ "isOn" ] == "on" ) {
header( "refresh: 1" ); //每一秒刷新一次页面 } if (isset( $_GET [ "msg" ])) {
//收到游戏结束的消息 echo $html . "<marquee direction=up>{$_GET[" msg "]}</marquee>" . $controll ; } else {
//游戏画面显示 echo $html . $map . $controll ; } } /** * 设置虚拟显存session中的数据 * [url=home.php?mod=space&uid=952169]@Param[/url] string $k * @param string $v */ public function set( $k , $v ) {
$_SESSION [ $k ] = $v ; } /** * 读取虚拟缓存session中的数据 * @param string $k * @return string|bool */ public function get( $k ) {
return isset( $_SESSION [ $k ]) ? $_SESSION [ $k ] : false; } /** * 贪吃蛇算法,添头去尾、吃食物、撞墙判断、咬自己判断 * @return void */ public function cpu() {
session_start(); //游戏若暂停状态则不需计算不需修改虚拟缓存 if (!(isset( $_GET [ "isOn" ]) && $_GET [ "isOn" ] == "on" )) {
return ; } //初始化蛇体和食物 if (! $this ->get( "snake" )) {
$this ->set( "snake" , [ [29, 29] ]); $this ->set( "score" , 0); $this ->getFood(); return ; } //初始化运动方向 if (!isset( $_GET [ "direction" ])) {
$this ->set( "direction" , "left" ); } else {
$this ->set( "direction" , $_GET [ "direction" ]); } $snake = $this ->get( "snake" ); //计算蛇头坐标 switch ( $this ->get( "direction" )) {
case "up" : {
$snakeHead = [ $snake [0][0], $snake [0][1] - 1 ]; break ; } case "down" : {
$snakeHead = [ $snake [0][0], $snake [0][1] + 1 ]; break ; } case "left" : {
$snakeHead = [ $snake [0][0] - 1, $snake [0][1] ]; break ; } case "right" : {
$snakeHead = [ $snake [0][0] + 1, $snake [0][1] ]; break ; } } //咬到自己,游戏结束 if (in_array( $snakeHead , $snake )) {
$this ->gameOver(); return ; } //添加蛇头坐标 array_unshift ( $snake , $snakeHead ); //撞墙,游戏结束 if ( $snake [0][0] < 0 || $snake [0][1] < 0 || $snake [0][0] > 29 || $snake [0][1] > 29) {
$this ->gameOver(); return ; } //咬到食物得一分 if (in_array( $this ->get( "food" ), $snake )) {
$this ->getFood(); $this ->set( "score" , $this ->get( "score" ) + 1); } else {
unset( $snake [ count ( $snake ) - 1]); } $this ->set( "snake" , $snake ); } /** * 取得食物 * @return void */ public function getFood() {
$food = [mt_rand(1, 29), mt_rand(1, 29)]; $this ->set( "food" , $food ); if (in_array( $food , $this ->get( "snake" ))) {
$this ->getFood(); } } /** * 游戏结束 * @return void */ public function gameOver() {
session_unset(); header( "location:" . $this ->app . "?msg=gameover" ); } /** * 程序入口 * @return void */ public function main() {
$this ->cpu(); $this -> print (); } } ( new snake())->main(); |