terminal

terminal.php

#!/usr/bin/env php
<?php

$terminal = new Terminal();
$terminal->saveTTY();
$terminal->initTTY();

$player = new Player($terminal, array("x" =>10, "y" => 27));

$valid = false;
while ($char = fread(STDIN, 1)) {
    if ($char == "[") {
        $valid = true;
        continue;
    }
    if (in_array($char, ["q", "Q"])) {
        $terminal->restoreTTY();
        exit;
    }
    if ($valid) {
        switch ($char) {
            case "A" :
                $player->moveUp();
                break;
            case "B" :
                $player->moveDown();
                break;
            case "C" :
                $player->moveRight();
                break;
            case "D" :
                $player->moveLeft();
                break;
        }
        $valid = false; 
    }
}

class Terminal 
{
    public function initTTY()
    {
        $this->clearScreen();
        $this->resetCursor();
        //http://www.faqs.org/docs/Linux-HOWTO/Serial-Programming-HOWTO.html#AEN92
        system("stty -icanon -echo");
        $this->cursorOff();
    }

    public function saveTTY()
    {
        // 保存当前 tty 设置
        $this->tty = shell_exec("stty -g");
    }

    public function restoreTTY()
    {
        $this->clearScreen();
        $this->resetCursor();
        system(sprintf("stty %s", $this->tty));
        $this->cursorOn();
    }

    public function cursorOn()
    {
        system("setterm -cursor on");     
    }

    public function cursorOff()
    {
        system("setterm -cursor off");     
    }

    public function setCursor($x, $y)
    {
        $this->command(sprintf("[%s;%sf", $x, $y));
    }

    public function command($command)
    {
        printf("\033%s", $command);
    }

    public function clearScreen()
    {
        $this->command("[2J");
    }

    public function resetCursor()
    {
        $this->command("[H");
    }

}

class Player 
{
    protected $terminal;
    protected $pos = array("x" => 0,"y" => 0);

    public function __construct($terminal, $pos = null) 
    {
        $this->terminal = $terminal;
        if (!is_null($pos)) {
            $this->pos = $pos;
        }
        $this->move();
        $this->setPlayer();
    }

    public function moveUp()
    {
        $this->clearPos();
        $this->pos["x"] -= 1; 
        $this->move();
        $this->setPlayer();

    }
    public function moveDown()
    {
        $this->clearPos();
        $this->pos["x"] += 1;
        $this->move();
        $this->setPlayer();
    }
    public function moveRight()
    {
        $this->clearPos();
        $this->pos["y"] += 1;
        $this->move();
        $this->setPlayer();
    }
    public function moveLeft()
    {
        $this->clearPos();
        $this->pos["y"] -= 1;
        $this->move();
        $this->setPlayer();
    }

    public function move()
    {
        $this->terminal->setCursor($this->pos["x"], $this->pos["y"]);
    }

    public function clearPos()
    {
        $this->move();
        echo " "; 
    }

    public function setPlayer()
    {
        echo "@";
    }
}

nice