From 08ea1e085f7e019a79065d337576c44315a8bf53 Mon Sep 17 00:00:00 2001
From: Aleksey Lobanov <i@likemath.ru>
Date: Sun, 14 Mar 2021 22:06:45 +0300
Subject: [PATCH] hw3: initial commit

---
 03_ThreeWayAndTkinter/main.py | 119 ++++++++++++++++++++++++++++++++++
 1 file changed, 119 insertions(+)
 create mode 100644 03_ThreeWayAndTkinter/main.py

diff --git a/03_ThreeWayAndTkinter/main.py b/03_ThreeWayAndTkinter/main.py
new file mode 100644
index 0000000..ce0e7d7
--- /dev/null
+++ b/03_ThreeWayAndTkinter/main.py
@@ -0,0 +1,119 @@
+#!/usr/bin/env python3
+
+import random
+import time
+from functools import partial
+import tkinter as tk
+from tkinter import messagebox as mb
+
+
+GAME_SIZE = 4
+POSSIBLE_MOVES = [(1, 0), (-1, 0), (0, 1), (0, -1)]
+INIT_RANDOM_STEPS = 5
+NEW_GAME_RANDOM_STEPS = 1000
+
+
+def get_val_pos(state, val):
+    for i in range(GAME_SIZE):
+        for j in range(GAME_SIZE):
+            if state[i][j] == val:
+                return i, j
+
+
+def swap_cells(state, first, second):
+    state[first[0]][first[1]], state[second[0]][second[1]] = (
+        state[second[0]][second[1]],
+        state[first[0]][first[1]],
+    )
+
+
+def get_game_state(steps=0):
+    res = [[0 for i in range(GAME_SIZE)] for j in range(GAME_SIZE)]
+    for i in range(GAME_SIZE):
+        for j in range(4):
+            if i == GAME_SIZE - 1 and j == GAME_SIZE - 1:
+                # empty cell
+                continue
+            res[i][j] = i * GAME_SIZE + j + 1
+
+    empty_pos = get_val_pos(res, 0)
+    for step_ind in range(steps):
+        possbile_next_cells = []
+        for delta_x, delta_y in POSSIBLE_MOVES:
+            next_cell = (empty_pos[0] + delta_x, empty_pos[1] + delta_y)
+            if 0 <= next_cell[0] < GAME_SIZE and 0 <= next_cell[1] < GAME_SIZE:
+                possbile_next_cells.append(next_cell)
+        next_cell = random.choice(possbile_next_cells)
+        # swap == one move
+        swap_cells(res, empty_pos, next_cell)
+        empty_pos = next_cell
+    return res
+
+
+class Application(tk.Frame):
+    def __init__(self, master=None):
+        super().__init__(master)
+        tk.Grid.rowconfigure(self.master, 0, weight=1)
+        tk.Grid.columnconfigure(self.master, 0, weight=1)
+        self.grid(sticky="news", column=0, row=0)
+        self.createWidgets()
+
+        self.rowconfigure(0, weight=1)
+        for i in range(1, 5):
+            self.rowconfigure(i, weight=3)
+        for i in range(4):
+            self.columnconfigure(i, weight=1)
+
+    def createWidgets(self):
+        self.new_bt = tk.Button(self, text="New", command=self.process_new_game)
+        self.exit_bt = tk.Button(self, text="Exit", command=self.quit)
+        self.new_bt.grid(row=0, column=0, columnspan=2)
+        self.exit_bt.grid(row=0, column=2, columnspan=2)
+        self.game_buttons = self.create_game_buttons()
+        self.game_state = get_game_state(INIT_RANDOM_STEPS)
+        self.render_current_state()
+
+    def create_game_buttons(self):
+        res = {}
+        for i in range(GAME_SIZE * GAME_SIZE):
+            btn_value = i + 1
+            btn = tk.Button(
+                self,
+                text=str(btn_value),
+                command=partial(self.process_number_press, btn_value),
+            )
+            res[btn_value] = btn
+        return res
+
+    def process_number_press(self, val):
+        val_pos = get_val_pos(self.game_state, val)
+        empty_pos = get_val_pos(self.game_state, 0)
+        print("poses", val_pos, empty_pos)
+        delta = (empty_pos[0] - val_pos[0], empty_pos[1] - val_pos[1])
+        if delta not in POSSIBLE_MOVES:
+            return
+        swap_cells(self.game_state, val_pos, empty_pos)
+        self.render_current_state()
+        if self.game_state == get_game_state(0):
+            mb.showinfo(title="Info", message="You win!")
+            self.game_state = get_game_state(NEW_GAME_RANDOM_STEPS)
+            self.render_current_state()
+
+    def process_new_game(self):
+        self.game_state = get_game_state(NEW_GAME_RANDOM_STEPS)
+        self.render_current_state()
+
+    def render_current_state(self):
+        for i in range(4):
+            for j in range(4):
+                btn_value = self.game_state[i][j]
+                if btn_value == 0:
+                    continue
+                btn = self.game_buttons[btn_value]
+                btn.grid(row=i + 1, column=j, sticky="news")
+
+
+if __name__ == "__main__":
+    app = Application()
+    app.master.title("15-шки")
+    app.mainloop()