{
 "cells": [
  {
   "cell_type": "markdown",
   "id": "edd8e81d",
   "metadata": {},
   "source": [
    "# 20-25 · Stany gry\n",
    "\n",
    "Praktyka do sekcji [«Stany gry»](/pl/chapters/rozdzial-20/20-25-sostoyaniya-igry.html). Weryfikacja dozwolonych przejść między stanami."
   ]
  },
  {
   "cell_type": "markdown",
   "id": "2c4c3cd6",
   "metadata": {},
   "source": [
    "## Cel\n",
    "\n",
    "Opisać dozwolone przejścia między stanami jako dane i je sprawdzić."
   ]
  },
  {
   "cell_type": "markdown",
   "id": "e1dab525",
   "metadata": {},
   "source": [
    "## Sprawa robocza"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "id": "a470defd",
   "metadata": {
    "execution": {
     "iopub.execute_input": "2026-09-03T10:12:22.542507Z",
     "iopub.status.busy": "2026-09-03T10:12:22.542318Z",
     "iopub.status.idle": "2026-09-03T10:12:22.580775Z",
     "shell.execute_reply": "2026-09-03T10:12:22.579614Z"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "MENU -> IGRA: True\n",
      "MENU -> GAME_OVER: False\n",
      "PAUZA -> GAME_OVER: False\n"
     ]
    }
   ],
   "source": [
    "from enum import Enum, auto\n",
    "\n",
    "class Sostoyanie(Enum):\n",
    "    MENU = auto()\n",
    "    IGRA = auto()\n",
    "    PAUZA = auto()\n",
    "    GAME_OVER = auto()\n",
    "\n",
    "RAZRESHENNYE_PEREHODY = {\n",
    "    Sostoyanie.MENU: {Sostoyanie.IGRA},\n",
    "    Sostoyanie.IGRA: {Sostoyanie.PAUZA, Sostoyanie.GAME_OVER},\n",
    "    Sostoyanie.PAUZA: {Sostoyanie.IGRA},\n",
    "    Sostoyanie.GAME_OVER: {Sostoyanie.MENU},\n",
    "}\n",
    "\n",
    "def perehod_razreshen(otkuda, kuda):\n",
    "    return kuda in RAZRESHENNYE_PEREHODY[otkuda]\n",
    "\n",
    "print(\"MENU -> IGRA:\", perehod_razreshen(Sostoyanie.MENU, Sostoyanie.IGRA))\n",
    "print(\"MENU -> GAME_OVER:\", perehod_razreshen(Sostoyanie.MENU, Sostoyanie.GAME_OVER))\n",
    "print(\"PAUZA -> GAME_OVER:\", perehod_razreshen(Sostoyanie.PAUZA, Sostoyanie.GAME_OVER))"
   ]
  },
  {
   "cell_type": "markdown",
   "id": "858962ec",
   "metadata": {},
   "source": [
    "## Sprawdzenie wyniku"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "id": "4e322ddf",
   "metadata": {
    "execution": {
     "iopub.execute_input": "2026-09-03T10:12:22.582167Z",
     "iopub.status.busy": "2026-09-03T10:12:22.581997Z",
     "iopub.status.idle": "2026-09-03T10:12:22.590140Z",
     "shell.execute_reply": "2026-09-03T10:12:22.589628Z"
    }
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Верно: не любое состояние достижимо из любого другого напрямую.\n"
     ]
    }
   ],
   "source": [
    "assert perehod_razreshen(Sostoyanie.MENU, Sostoyanie.IGRA) is True\n",
    "assert perehod_razreshen(Sostoyanie.MENU, Sostoyanie.GAME_OVER) is False\n",
    "assert perehod_razreshen(Sostoyanie.PAUZA, Sostoyanie.GAME_OVER) is False\n",
    "assert perehod_razreshen(Sostoyanie.IGRA, Sostoyanie.PAUZA) is True\n",
    "print(\"Верно: не любое состояние достижимо из любого другого напрямую.\")"
   ]
  }
 ],
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