From c10584f2322742af5b12469d69179373fd798e95 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?U=C4=9Fur=20K=C3=BCpeli?= <uurkupeli@gmail.com>
Date: Sun, 3 Jul 2022 12:33:05 +0300
Subject: [PATCH] init

---
 04_Awari/rust/Cargo.toml  |   8 ++
 04_Awari/rust/src/main.rs | 179 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 187 insertions(+)
 create mode 100644 04_Awari/rust/Cargo.toml
 create mode 100644 04_Awari/rust/src/main.rs

diff --git a/04_Awari/rust/Cargo.toml b/04_Awari/rust/Cargo.toml
new file mode 100644
index 00000000..1ec69633
--- /dev/null
+++ b/04_Awari/rust/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "rust"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/04_Awari/rust/src/main.rs b/04_Awari/rust/src/main.rs
new file mode 100644
index 00000000..4c1b4a14
--- /dev/null
+++ b/04_Awari/rust/src/main.rs
@@ -0,0 +1,179 @@
+fn main() {
+    loop {
+        let mut game = Game::default();
+
+        loop {
+            game.draw();
+            if game.play_turn(false) {
+                break;
+            }
+        }
+    }
+}
+
+enum DistributeResult {
+    Normal,               // Leftover beans
+    EndOnHomePit(bool),   // "true" if ended on Player Home Pit
+    EndOnEmptyPit(usize), // "index" of the empty pit within the Row
+    ChosenEmpty,
+    GameOver,
+}
+
+struct Game {
+    pits: [u8; 14],
+    player_turn: bool,
+}
+
+impl Default for Game {
+    fn default() -> Self {
+        println!("\t\t\t AWARI");
+        println!("CREATIVE COMPUTING MORRISTOWN, NEW JERSEY");
+
+        Self {
+            pits: [3, 3, 3, 3, 3, 3, 0, 3, 3, 3, 3, 3, 3, 0],
+            player_turn: true,
+        }
+    }
+}
+
+impl Game {
+    fn step_through(&mut self, mut index: usize) -> usize {
+        let mut bean_amount = self.pits[index];
+
+        loop {
+            self.pits[index] += 1;
+
+            bean_amount -= 1;
+            if bean_amount == 0 {
+                return index;
+            }
+
+            index += 1;
+            if index > self.pits.len() - 1 {
+                index = 0;
+            }
+        }
+    }
+
+    fn play_turn(&mut self, is_repeat: bool) -> bool {
+        use DistributeResult::*;
+
+        let chosen_index = if self.player_turn {
+            player_prompt(if is_repeat { "Again?" } else { "Your move?" })
+        } else {
+            println!("My move is ");
+            0 // ai choice
+        };
+
+        match self.process_choice(chosen_index) {
+            Normal => (),
+            EndOnHomePit(player) => {
+                if player == self.player_turn && !is_repeat {
+                    self.play_turn(true);
+                }
+            }
+            EndOnEmptyPit(last_index) => {
+                let opposite_index = 12 - last_index;
+                let home_index = if self.player_turn { 6 } else { 13 };
+                let won_beans = 1 + self.pits[opposite_index];
+
+                self.pits[last_index] = 0;
+                self.pits[opposite_index] = 0;
+                self.pits[home_index] += won_beans;
+            }
+            ChosenEmpty => {
+                println!("Chosen pit is empty");
+                return self.play_turn(is_repeat);
+            }
+            GameOver => {
+                let (player_beans, ai_beans) = (self.pits[6], self.pits[13]);
+                if player_beans == ai_beans {
+                    println!("It's a draw")
+                } else if player_beans > ai_beans {
+                    println!("You win by {}", player_beans - ai_beans);
+                } else {
+                    println!("I win by {}", ai_beans - player_beans);
+                }
+                return true;
+            }
+        }
+        self.player_turn = !self.player_turn;
+        false
+    }
+
+    pub fn process_choice(&mut self, index: usize) -> DistributeResult {
+        use DistributeResult::*;
+
+        if self.pits[index + 1] == 0 {
+            return ChosenEmpty;
+        }
+
+        let last_index = self.step_through(index + 1);
+
+        if self.is_gameover() {
+            return GameOver;
+        } else if last_index == 6 && self.player_turn {
+            return EndOnHomePit(true);
+        } else if last_index == 13 && !self.player_turn {
+            return EndOnHomePit(false);
+        } else if self.pits[last_index] == 1 {
+            return EndOnEmptyPit(last_index);
+        }
+
+        Normal
+    }
+
+    fn is_gameover(&self) -> bool {
+        for (i, p) in self.pits.iter().enumerate() {
+            if i != 6 || i != 13 {
+                if *p > 0 {
+                    return false;
+                }
+            }
+        }
+        true
+    }
+
+    fn draw(&self) {
+        let row_as_string = |player: bool| -> String {
+            let mut row_as_string = String::new();
+            let range = if player { 0..6 } else { 7..13 };
+            range.for_each(|i| {
+                let mut bean_amount_as_string = self.pits[i].to_string();
+                bean_amount_as_string.push_str("  ");
+                row_as_string.push_str(&bean_amount_as_string);
+            });
+            return row_as_string;
+        };
+
+        println!(
+            "  {}\n{}\t\t   {}\n  {}",
+            row_as_string(false),
+            self.pits[13].to_string(),
+            self.pits[6].to_string(),
+            row_as_string(true)
+        );
+    }
+}
+
+pub fn player_prompt(message: &str) -> usize {
+    loop {
+        let mut input = String::new();
+        println!("{}", message);
+
+        if let Ok(_) = std::io::stdin().read_line(&mut input) {
+            match input.trim().parse::<usize>() {
+                Ok(n) => {
+                    if (1..=6).contains(&n) {
+                        return n;
+                    } else {
+                        println!("Enter a number between 1 and 6")
+                    }
+                }
+                Err(e) => {
+                    println!("{}", e);
+                }
+            }
+        }
+    }
+}