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| { | |||
| "cells": [ | |||
| { | |||
| "cell_type": "markdown", | |||
| "metadata": {}, | |||
| "source": [ | |||
| "# Software Entwicklung\n", | |||
| "\n", | |||
| "## Kapitel 11: Bots\n", | |||
| "\n", | |||
| "### 11.3 Bot-Client\n", | |||
| "\n", | |||
| "#### 11.3.1 Voraussetzung\n", | |||
| "\n", | |||
| "Das nachfolgende Beispielskript ist erst lauffähig, wenn der zugehörige Server läuft." | |||
| ] | |||
| }, | |||
| { | |||
| "cell_type": "markdown", | |||
| "metadata": {}, | |||
| "source": [ | |||
| "#### 11.3.2 Implementierung\n", | |||
| "\n", | |||
| "Zunächst müssen dem Client die notwendigen Verbindungsdaten zur Verfügung gestellt werden." | |||
| ] | |||
| }, | |||
| { | |||
| "cell_type": "code", | |||
| "execution_count": null, | |||
| "metadata": {}, | |||
| "outputs": [], | |||
| "source": [ | |||
| "host=\"127.0.0.1\" # IP-Nummer des Rechners, auf dem der Bot-Server läuft\n", | |||
| "port=12345 # Hier muss die Portnummer eingetragen werden" | |||
| ] | |||
| }, | |||
| { | |||
| "cell_type": "markdown", | |||
| "metadata": {}, | |||
| "source": [ | |||
| "Der Server wird immer wieder den für den Bot sichtbaren Weltausschnitt als mehrzeiligen Text liefern.\n", | |||
| "Der Ausschnitt ist immer quadratisch, d.h. aus der Länge der ersten Zeile lässt sich ableiten,\n", | |||
| "wie viele Zeilen noch gelesen werden müssen. Die nachfolgende Funktion <code>read_view</code>\n", | |||
| "leistet dieses Einlesen und gibt den sichtbaren Ausschnitt als String zurück." | |||
| ] | |||
| }, | |||
| { | |||
| "cell_type": "code", | |||
| "execution_count": null, | |||
| "metadata": {}, | |||
| "outputs": [], | |||
| "source": [ | |||
| "def read_view(f):\n", | |||
| " view = f.readline()\n", | |||
| " if not view:\n", | |||
| " return\n", | |||
| " for x in range(2, len(view)):\n", | |||
| " line = f.readline()\n", | |||
| " if not line:\n", | |||
| " return\n", | |||
| " view += line\n", | |||
| " return view" | |||
| ] | |||
| }, | |||
| { | |||
| "cell_type": "markdown", | |||
| "metadata": {}, | |||
| "source": [ | |||
| "Die Beispielimplementierung besitzt keine eigene Logik, sondern lässt nach Ausgabe des\n", | |||
| "sichtbaren Ausschnitts die Steuerung des Bots über Tastatureingaben zu. Dabei bedeuten:\n", | |||
| "\n", | |||
| "* W -> Vorwärts\n", | |||
| "* A -> Drehung nach links\n", | |||
| "* D -> Drehung nach rechts\n", | |||
| "* S -> Rückwärts\n", | |||
| "* Jede andere Eingabe -> Beenden des Bots\n", | |||
| "\n", | |||
| "Die Funktion <code>game_loop</code> liefert dieses Verhalten." | |||
| ] | |||
| }, | |||
| { | |||
| "cell_type": "code", | |||
| "execution_count": null, | |||
| "metadata": {}, | |||
| "outputs": [], | |||
| "source": [ | |||
| "def game_loop(f):\n", | |||
| " from IPython.display import clear_output\n", | |||
| " \n", | |||
| " commands = {'w':'^', 'a':'<', 's':'v', 'd':'>', 'W':'^', 'A':'<', 'S':'v', 'D':'>' }\n", | |||
| "\n", | |||
| " while True:\n", | |||
| " try:\n", | |||
| " view = read_view(f)\n", | |||
| " if not view:\n", | |||
| " break\n", | |||
| " clear_output(wait=True)\n", | |||
| " print(view)\n", | |||
| " cmd = input(\"[WASD]:\")\n", | |||
| " cmd = commands[cmd]\n", | |||
| " s.send(str.encode(cmd))\n", | |||
| " except Exception as e:\n", | |||
| " print(e)\n", | |||
| " break" | |||
| ] | |||
| }, | |||
| { | |||
| "cell_type": "markdown", | |||
| "metadata": {}, | |||
| "source": [ | |||
| "Im Hauptprogramm muss schließlich eine Socket-Verbindung zum Server aufgebaut und\n", | |||
| "die <code>game_loop</code> gestartet werden." | |||
| ] | |||
| }, | |||
| { | |||
| "cell_type": "code", | |||
| "execution_count": null, | |||
| "metadata": {}, | |||
| "outputs": [], | |||
| "source": [ | |||
| "import socket\n", | |||
| "\n", | |||
| "with socket.socket() as s:\n", | |||
| " s.connect((host, port))\n", | |||
| " with s.makefile() as f:\n", | |||
| " game_loop(f)\n", | |||
| "print(\"Client stopped.\")" | |||
| ] | |||
| }, | |||
| { | |||
| "cell_type": "markdown", | |||
| "metadata": {}, | |||
| "source": [ | |||
| "Viel Spass beim Trainieren!" | |||
| ] | |||
| } | |||
| ], | |||
| "metadata": { | |||
| "celltoolbar": "Raw Cell Format", | |||
| "kernelspec": { | |||
| "display_name": "Python 3", | |||
| "language": "python", | |||
| "name": "python3" | |||
| }, | |||
| "language_info": { | |||
| "codemirror_mode": { | |||
| "name": "ipython", | |||
| "version": 3 | |||
| }, | |||
| "file_extension": ".py", | |||
| "mimetype": "text/x-python", | |||
| "name": "python", | |||
| "nbconvert_exporter": "python", | |||
| "pygments_lexer": "ipython3", | |||
| "version": "3.9.2" | |||
| } | |||
| }, | |||
| "nbformat": 4, | |||
| "nbformat_minor": 2 | |||
| } | |||
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