From 6b321e034fbd20298957092770b9ea40f262b513 Mon Sep 17 00:00:00 2001
From: cool-mist <n.suryap@gmail.com>
Date: Mon, 24 Mar 2025 00:19:34 +0530
Subject: [PATCH] Add buttons, refactor, make it more mouse friendly

---
 src/game.rs        | 499 +++++++++++++++++++++++++++++++++++++++++++++
 src/game/button.rs |  74 +++++++
 src/main.rs        | 464 +----------------------------------------
 3 files changed, 577 insertions(+), 460 deletions(-)
 create mode 100644 src/game/button.rs

diff --git a/src/game.rs b/src/game.rs
index 0daf88a..129d023 100644
--- a/src/game.rs
+++ b/src/game.rs
@@ -1 +1,500 @@
+use std::fmt::{self, Display, Formatter};
+
+use button::{Button, ButtonAction};
+use macroquad::prelude::*;
+use sol_chess::{
+    board::{Board, BoardState},
+    generator,
+};
+use texture::PieceTexture;
+
+pub mod button;
 pub mod texture;
+
+pub struct Game {
+    // The generated puzzle. We keep a copy of this to reset the game.
+    original_board: Board,
+
+    // What is shown to the user
+    board: Board,
+
+    // Constants througout the game
+    texture_res: Texture2D,
+    num_squares: usize,
+    heading_font_size: f32,
+    heading_text: String,
+
+    // Update below on handle input
+    state: GameState,
+    debug: bool,
+
+    // Update below on window resize
+    // Used for drawing the state
+    square_width: f32,
+    window_height: f32,
+    window_width: f32,
+    squares: Vec<GameSquare>,
+    heading_rect: Rect,
+    btns: Vec<Button>,
+}
+
+struct GameSquare {
+    rect: Rect,
+    color: Color,
+    is_source: bool,
+    is_target: bool,
+    is_previous_target: bool,
+    i: usize,
+    j: usize,
+}
+
+#[derive(Copy, Clone)]
+enum GameState {
+    SelectSource(Option<(usize, usize)>),
+    SelectTarget((usize, usize)),
+    GameOver((usize, usize)),
+}
+
+impl Game {
+    pub fn new(board: Board, texture_res: Texture2D) -> Self {
+        let num_squares: usize = 4;
+
+        Self {
+            original_board: board.clone(),
+            board,
+            squares: Vec::new(),
+            heading_rect: Rect::new(0., 0., 0., 0.),
+            heading_text: "Solitaire Chess".to_string(),
+            heading_font_size: 0.,
+            num_squares,
+            texture_res,
+            state: GameState::SelectSource(None),
+            debug: false,
+            btns: Vec::new(),
+            window_height: 0.,
+            window_width: 0.,
+            square_width: 0.,
+        }
+    }
+
+    pub fn draw(&self) {
+        self.draw_heading();
+        self.draw_board();
+        self.draw_buttons();
+        self.draw_debug();
+    }
+
+    pub fn update_window_size(&mut self) {
+        let new_height = if screen_height() > 800.0 {
+            800.0
+        } else {
+            screen_height()
+        };
+
+        let new_width = if screen_width() > 1000.0 {
+            1000.0
+        } else {
+            screen_width()
+        };
+
+        if new_height == self.window_height && new_width == self.window_width {
+            return;
+        }
+
+        self.window_height = new_height;
+        self.window_width = new_width;
+        self.update_drawables();
+    }
+
+    pub fn handle_input(&mut self) {
+        let mut button_action = None;
+        for btn in &mut self.btns {
+            btn.handle_input();
+            if btn.is_pressed {
+                button_action = Some(btn.action);
+            }
+        }
+
+        if let Some(action) = button_action {
+            match action {
+                ButtonAction::Reset => self.reset(),
+                ButtonAction::Next => self.next_puzzle(),
+            }
+
+            return;
+        }
+
+        if is_key_released(KeyCode::D) {
+            self.debug = !self.debug;
+            return;
+        }
+
+        if is_key_released(KeyCode::Q) {
+            std::process::exit(0);
+        }
+
+        if is_mouse_button_released(MouseButton::Left) {
+            let current_state = self.state.clone();
+            let new_state = match current_state {
+                GameState::SelectSource(previous_target) => {
+                    self.handle_select_source(mouse_position(), previous_target)
+                }
+                GameState::SelectTarget(source) => {
+                    let next = self.handle_select_target(mouse_position(), source);
+                    if let GameState::SelectTarget(_) = next {
+                        self.reset_squares();
+                        GameState::SelectSource(None)
+                    } else {
+                        next
+                    }
+                }
+                GameState::GameOver(previous_target) => GameState::GameOver(previous_target),
+            };
+            self.state = new_state;
+            return;
+        }
+
+        if is_mouse_button_pressed(MouseButton::Left) {
+            let current_state = self.state.clone();
+            let new_state = match current_state {
+                GameState::SelectSource(previous_target) => {
+                    self.handle_select_source(mouse_position(), previous_target)
+                }
+                GameState::SelectTarget(source) => GameState::SelectTarget(source),
+                GameState::GameOver(previous_target) => GameState::GameOver(previous_target),
+            };
+
+            self.state = new_state;
+        }
+    }
+
+    fn draw_heading(&self) {
+        draw_text(
+            self.heading_text.as_str(),
+            self.heading_rect.x,
+            self.heading_rect.y,
+            self.heading_font_size,
+            BLACK,
+        );
+    }
+
+    fn draw_board(&self) {
+        let sprite_size = 0.8 * self.square_width;
+        let mut selected_square = None;
+        self.squares.iter().for_each(|square| {
+            let color = if square.is_source {
+                Color::from_rgba(152, 152, 152, 255)
+            } else if square.is_target {
+                Color::from_rgba(152, 129, 123, 255)
+            } else {
+                square.color
+            };
+
+            draw_rectangle(
+                square.rect.x,
+                square.rect.y,
+                square.rect.w,
+                square.rect.h,
+                color,
+            );
+
+            if let Some(p) = &self.board.cells[square.i][square.j] {
+                let offset = (square.rect.w - sprite_size) / 2.0;
+                let dtp = PieceTexture::for_piece(*p, sprite_size);
+                if !square.is_source {
+                    draw_texture_ex(
+                        &self.texture_res,
+                        square.rect.x + offset,
+                        square.rect.y + offset,
+                        WHITE,
+                        dtp,
+                    );
+                } else {
+                    selected_square = Some(square);
+                }
+            }
+        });
+
+        if let Some(selected_square) = selected_square {
+            if let Some(p) = self.board.cells[selected_square.i][selected_square.j] {
+                let dtp = PieceTexture::for_piece(p, sprite_size);
+                draw_texture_ex(
+                    &self.texture_res,
+                    mouse_position().0 - sprite_size / 2.0,
+                    mouse_position().1 - sprite_size / 2.0,
+                    WHITE,
+                    dtp,
+                );
+            }
+        }
+    }
+
+    fn draw_buttons(&self) {
+        for btn in &self.btns {
+            btn.draw();
+        }
+    }
+
+    fn draw_debug(&self) {
+        if self.debug {
+            let mut debug_lines = vec![];
+            let (mx, my) = mouse_position();
+            let hover_square = self.squares.iter().find(|s| {
+                let c = Circle::new(mx, my, 0.0);
+                if c.overlaps_rect(&s.rect) {
+                    return true;
+                }
+                return false;
+            });
+            debug_lines.push(format!("Game State: {}", self.state));
+            debug_lines.push(format!("Board State: {}", self.board.game_state));
+            if let Some(hover_square) = hover_square {
+                debug_lines.push(format!("Hover: [ {}, {} ]", hover_square.i, hover_square.j));
+            }
+            self.add_debug_info(debug_lines);
+
+            self.show_fps();
+        }
+    }
+
+    fn get(&mut self, i: usize, j: usize) -> &mut GameSquare {
+        &mut self.squares[i * self.num_squares + j]
+    }
+
+    fn update_drawables(&mut self) {
+        self.square_width = 0.15 * self.window_width;
+
+        let board_x = (self.window_width - (self.square_width * self.num_squares as f32)) / 2.0;
+        let board_y = (self.window_height - (self.square_width * self.num_squares as f32)) / 2.0;
+        let board_width = self.square_width * self.num_squares as f32;
+
+        self.heading_font_size = 0.07 * self.window_width;
+        let f = self.heading_font_size.floor() as u16;
+        let dims = measure_text(self.heading_text.as_str(), None, f, 1.0);
+        self.heading_rect = Rect::new(
+            board_x + (board_width - dims.width) / 2.0,
+            board_y / 2.0,
+            dims.width,
+            dims.height,
+        );
+
+        let dark = Color::from_rgba(83, 104, 120, 255);
+        let light = Color::from_rgba(190, 190, 190, 255);
+        let mut rects = Vec::new();
+        for i in 0..self.num_squares {
+            for j in 0..self.num_squares {
+                let x_eff = board_x + (i as f32 * self.square_width);
+                let y_eff = board_y + (j as f32 * self.square_width);
+                let rect = Rect::new(x_eff, y_eff, self.square_width, self.square_width);
+                let color = match (i + j) % 2 {
+                    1 => dark,
+                    _ => light,
+                };
+
+                rects.push(GameSquare {
+                    rect,
+                    color,
+                    i,
+                    j,
+                    is_source: false,
+                    is_target: false,
+                    is_previous_target: false,
+                });
+            }
+        }
+
+        self.squares = rects;
+
+        let btn_height = 0.1 * self.window_height;
+        let btn_displ = (self.window_height
+            - (self.num_squares as f32 * self.square_width + board_y)
+            - btn_height)
+            * 0.5;
+        let btn_y = self.num_squares as f32 * self.square_width + board_y + btn_displ;
+        let btn_w = self.num_squares as f32 * self.square_width * 0.5;
+        let reset_btn = Button::new(
+            "Reset",
+            board_x,
+            btn_y,
+            btn_w,
+            btn_height,
+            ButtonAction::Reset,
+        );
+        let mut next_btn = Button::new(
+            "Next",
+            board_x + btn_w,
+            btn_y,
+            btn_w,
+            btn_height,
+            ButtonAction::Next,
+        );
+
+        next_btn.is_active = false;
+        self.btns = vec![reset_btn, next_btn];
+    }
+
+    fn handle_select_source(
+        &mut self,
+        mouse_position: (f32, f32),
+        previous_target: Option<(usize, usize)>,
+    ) -> GameState {
+        self.reset_squares();
+        let (x, y) = mouse_position;
+        let mouse = Circle::new(x, y, 0.0);
+        let mut selected = None;
+        for square in &mut self.squares {
+            if mouse.overlaps_rect(&square.rect) {
+                if let Some(_) = self.board.cells[square.i][square.j] {
+                    selected = Some((square.i, square.j));
+                }
+            }
+        }
+
+        if let Some((i, j)) = selected {
+            self.get(i, j).is_source = true;
+            let mut target_squares = vec![];
+            for m in self.board.legal_moves.iter() {
+                if m.from.file == i && m.from.rank == j {
+                    target_squares.push((m.to.file, m.to.rank));
+                }
+            }
+
+            for (i, j) in target_squares {
+                self.get(i, j).is_target = true;
+            }
+
+            return GameState::SelectTarget(selected.unwrap());
+        }
+
+        if let Some((i, j)) = previous_target {
+            self.get(i, j).is_previous_target = true;
+        }
+
+        return GameState::SelectSource(None);
+    }
+
+    fn handle_select_target(
+        &mut self,
+        mouse_position: (f32, f32),
+        source: (usize, usize),
+    ) -> GameState {
+        let (x, y) = mouse_position;
+        let mouse = Circle::new(x, y, 0.0);
+
+        let mut selected = None;
+        for square in &mut self.squares {
+            if mouse.overlaps_rect(&square.rect) {
+                if let Some(_) = self.board.cells[square.i][square.j] {
+                    selected = Some((square.i, square.j));
+                }
+            }
+        }
+
+        let (s_x, s_y) = source;
+        let Some((x, y)) = selected else {
+            self.get(s_x, s_y).is_source = true;
+            return GameState::SelectTarget(source);
+        };
+
+        if x == s_x && y == s_y {
+            self.get(s_x, s_y).is_source = true;
+            return GameState::SelectTarget(source);
+        }
+
+        let mut is_legal = false;
+        if self.get(x, y).is_target {
+            is_legal = true;
+        }
+
+        if is_legal {
+            let m = self.board.legal_moves.iter().find(|m| {
+                m.from.file == s_x && m.from.rank == s_y && m.to.file == x && m.to.rank == y
+            });
+
+            let m = m.expect("legal move should be found");
+
+            self.board.make_move(m.clone());
+
+            if self.board.game_state == BoardState::Won || self.board.game_state == BoardState::Lost
+            {
+                self.reset_squares();
+                if self.board.game_state == BoardState::Won {
+                    for btn in &mut self.btns {
+                        if let ButtonAction::Next = btn.action {
+                            btn.is_active = true;
+                        }
+                    }
+                }
+
+                return GameState::GameOver((x, y));
+            }
+
+            self.reset_squares();
+            self.get(x, y).is_target = true;
+            return GameState::SelectSource(Some((x, y)));
+        }
+
+        self.reset_squares();
+        return GameState::SelectSource(None);
+    }
+
+    fn reset(&mut self) {
+        self.board = self.original_board.clone();
+        self.reset_squares();
+        for btn in &mut self.btns {
+            btn.reset();
+            if let ButtonAction::Next = btn.action {
+                btn.is_active = false;
+            }
+        }
+
+        self.state = GameState::SelectSource(None);
+    }
+
+    fn next_puzzle(&mut self) {
+        self.reset();
+        let generate = generator::generate(6, 100);
+        let board = generate.board().expect("No puzzle was generated");
+        self.original_board = board.clone();
+        self.board = board;
+    }
+
+    fn reset_squares(&mut self) {
+        for i in 0..self.num_squares {
+            for j in 0..self.num_squares {
+                self.get(i, j).is_source = false;
+                self.get(i, j).is_target = false;
+            }
+        }
+    }
+
+    fn add_debug_info(&self, lines: Vec<String>) {
+        let mut y = 20.0;
+        for line in lines {
+            draw_text(&line, 10.0, y, 20.0, BLACK);
+            y += 25.0;
+        }
+    }
+
+    fn show_fps(&self) {
+        let fps = get_fps();
+        draw_text(
+            &format!("FPS: {}", fps),
+            10.0,
+            screen_height() - 20.0,
+            20.0,
+            BLACK,
+        );
+    }
+}
+
+impl Display for GameState {
+    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
+        match self {
+            GameState::SelectSource(Some(x)) => write!(f, "Select Source [ {}, {} ]", x.0, x.1),
+            GameState::SelectSource(None) => write!(f, "Select Source [ ]"),
+            GameState::SelectTarget(x) => write!(f, "Select Target [ {}, {} ]", x.0, x.1),
+            GameState::GameOver(x) => write!(f, "Game Over [ {}, {} ]", x.0, x.1),
+        }
+    }
+}
diff --git a/src/game/button.rs b/src/game/button.rs
new file mode 100644
index 0000000..16f7aa6
--- /dev/null
+++ b/src/game/button.rs
@@ -0,0 +1,74 @@
+use macroquad::prelude::*;
+
+pub struct Button {
+    pub text: String,
+    pub is_pressed: bool,
+    pub is_active: bool,
+    pub action: ButtonAction,
+    rect: Rect,
+}
+
+#[derive(Debug, Clone, Copy)]
+pub enum ButtonAction {
+    Reset,
+    Next,
+}
+
+impl Button {
+    pub fn new(text: &str, x: f32, y: f32, width: f32, height: f32, action: ButtonAction) -> Self {
+        let rect = Rect::new(x, y, width, height);
+        Self {
+            text: text.to_string(),
+            is_pressed: false,
+            is_active: true,
+            rect,
+            action,
+        }
+    }
+
+    pub fn draw(&self) {
+        let bg_color = Color::from_rgba(190, 190, 190, 255);
+        let font_size = (self.rect.h * 0.3).floor() as u16;
+        let dims = measure_text(&self.text, None, font_size, 1.0);
+        draw_rectangle(self.rect.x, self.rect.y, self.rect.w, self.rect.h, bg_color);
+
+        let font_color = if self.is_active {
+            Color::from_rgba(0, 0, 0, 255)
+        } else {
+            Color::from_rgba(100, 0, 0, 255)
+        };
+
+        draw_text(
+            &self.text,
+            self.rect.x + (self.rect.w - dims.width) * 0.5,
+            self.rect.y + (self.rect.h - dims.height) * 0.5,
+            font_size as f32,
+            font_color,
+        );
+    }
+
+    pub fn reset(&mut self) {
+        self.is_pressed = false;
+        self.is_active = true;
+    }
+
+    pub fn handle_input(&mut self) {
+        if !self.is_active {
+            return;
+        }
+
+        if !is_mouse_button_released(MouseButton::Left) {
+            self.is_pressed = false;
+            return;
+        }
+
+        let (mx, my) = mouse_position();
+        let c = Circle::new(mx, my, 0.0);
+        if c.overlaps_rect(&self.rect) {
+            self.is_pressed = true;
+            return;
+        }
+
+        self.is_pressed = false;
+    }
+}
diff --git a/src/main.rs b/src/main.rs
index 2476908..1204b9a 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,13 +1,7 @@
-use core::fmt;
-use std::fmt::{Display, Formatter};
-
-use game::texture::PieceTexture;
+use game::Game;
 use macroquad::prelude::*;
 use miniquad::date;
-use sol_chess::{
-    board::{Board, BoardState},
-    generator,
-};
+use sol_chess::generator;
 
 mod game;
 
@@ -18,21 +12,13 @@ async fn main() {
     let mut game = init().await;
     loop {
         clear_background(background_color);
-        draw_heading("Solitaire Chess");
+        game.handle_input();
         game.update_window_size();
         game.draw();
-        game.handle_input();
         next_frame().await
     }
 }
 
-fn draw_heading(title: &str) {
-    let dims = measure_text(title, None, 60, 1.0);
-    let x = screen_width() / 2.0 - dims.width / 2.0;
-    let y = 2.0 * dims.height;
-    draw_text(title, x, y, 60.0, BLACK);
-}
-
 async fn init() -> Game {
     let texture_bytes = include_bytes!("../assets/pieces.png");
     let texture_res = Texture2D::from_file_with_format(&texture_bytes[..], None);
@@ -40,449 +26,7 @@ async fn init() -> Game {
     build_textures_atlas();
     let generate = generator::generate(6, 100);
     let board = generate.board().expect("No puzzle was generated");
-    let square_width = 128.0;
-    let num_squares = 4;
-    let x = (screen_width() - (square_width * num_squares as f32)) / 2.0;
-    let y = (screen_height() - (square_width * num_squares as f32)) / 2.0;
-    let game = Game::new(board, x, y, square_width, num_squares, texture_res);
+    let game = Game::new(board, texture_res);
 
     game
 }
-
-struct Game {
-    original_board: Board,
-    board: Board,
-    squares: Vec<GameSquare>,
-    texture_res: Texture2D,
-    num_squares: usize,
-    state: GameState,
-    debug: bool,
-    info_square: Rect,
-    window_height: f32,
-    window_width: f32,
-}
-
-struct GameSquare {
-    rect: Rect,
-    color: Color,
-    is_source: bool,
-    is_target: bool,
-    is_previous_target: bool,
-    i: usize,
-    j: usize,
-}
-
-#[derive(Copy, Clone)]
-enum GameState {
-    SelectSource(Option<(usize, usize)>),
-    SelectTarget((usize, usize)),
-    GameOver((usize, usize)),
-}
-
-impl Game {
-    fn new(
-        board: Board,
-        x: f32,
-        y: f32,
-        square_width: f32,
-        num_squares: usize,
-        texture_res: Texture2D,
-    ) -> Self {
-        let dark = Color::from_rgba(83, 104, 120, 255);
-        let light = Color::from_rgba(190, 190, 190, 255);
-        let mut rects = Vec::new();
-        for i in 0..num_squares {
-            for j in 0..num_squares {
-                let x_eff = x + (i as f32 * square_width);
-                let y_eff = y + (j as f32 * square_width);
-                let rect = Rect::new(x_eff, y_eff, square_width, square_width);
-                let color = match (i + j) % 2 {
-                    1 => dark,
-                    _ => light,
-                };
-
-                rects.push(GameSquare {
-                    rect,
-                    color,
-                    i,
-                    j,
-                    is_source: false,
-                    is_target: false,
-                    is_previous_target: false,
-                });
-            }
-        }
-
-        let info_x = x;
-        let info_y = y + (num_squares as f32 * square_width) + square_width / 2.0;
-        let info_w = square_width * num_squares as f32;
-
-        Self {
-            original_board: board.clone(),
-            board,
-            squares: rects,
-            num_squares,
-            texture_res,
-            state: GameState::SelectSource(None),
-            debug: false,
-            info_square: Rect::new(info_x, info_y, info_w, square_width),
-            window_height: screen_height(),
-            window_width: screen_width(),
-        }
-    }
-
-    fn update_window_size(&mut self) {
-        let new_height = screen_height();
-        let new_width = screen_width();
-
-        if new_height == self.window_height && new_width == self.window_width {
-            return;
-        }
-
-        self.window_height = screen_height();
-        self.window_width = screen_width();
-
-        let square_width = 128.0;
-        let num_squares = 4;
-        let x = (self.window_width - (square_width * num_squares as f32)) / 2.0;
-        let y = (self.window_height - (square_width * num_squares as f32)) / 2.0;
-
-        let dark = Color::from_rgba(83, 104, 120, 255);
-        let light = Color::from_rgba(190, 190, 190, 255);
-        let mut rects = Vec::new();
-        for i in 0..num_squares {
-            for j in 0..num_squares {
-                let x_eff = x + (i as f32 * square_width);
-                let y_eff = y + (j as f32 * square_width);
-                let rect = Rect::new(x_eff, y_eff, square_width, square_width);
-                let color = match (i + j) % 2 {
-                    1 => dark,
-                    _ => light,
-                };
-
-                rects.push(GameSquare {
-                    rect,
-                    color,
-                    i,
-                    j,
-                    is_source: false,
-                    is_target: false,
-                    is_previous_target: false,
-                });
-            }
-        }
-
-        let info_x = x;
-        let info_y = y + (num_squares as f32 * square_width) + square_width / 2.0;
-        let info_w = square_width * num_squares as f32;
-
-        self.squares = rects;
-        self.info_square = Rect::new(info_x, info_y, info_w, square_width);
-    }
-
-    fn get(&mut self, i: usize, j: usize) -> &mut GameSquare {
-        &mut self.squares[i * self.num_squares + j]
-    }
-
-    fn draw(&self) {
-        let sprite_size = 100.0;
-        let mut selected_square = None;
-        self.squares.iter().for_each(|square| {
-            let color = if square.is_source {
-                Color::from_rgba(152, 152, 152, 255)
-            } else if square.is_target {
-                Color::from_rgba(152, 129, 123, 255)
-            } else {
-                square.color
-            };
-
-            draw_rectangle(
-                square.rect.x,
-                square.rect.y,
-                square.rect.w,
-                square.rect.h,
-                color,
-            );
-
-            if let Some(p) = &self.board.cells[square.i][square.j] {
-                let offset = (square.rect.w - sprite_size) / 2.0;
-                let dtp = PieceTexture::for_piece(*p, sprite_size);
-                if !square.is_source {
-                    draw_texture_ex(
-                        &self.texture_res,
-                        square.rect.x + offset,
-                        square.rect.y + offset,
-                        WHITE,
-                        dtp,
-                    );
-                } else {
-                    selected_square = Some(square);
-                }
-            }
-        });
-
-        if let Some(selected_square) = selected_square {
-            if let Some(p) = self.board.cells[selected_square.i][selected_square.j] {
-                let dtp = PieceTexture::for_piece(p, sprite_size);
-                draw_texture_ex(
-                    &self.texture_res,
-                    mouse_position().0 - sprite_size / 2.0,
-                    mouse_position().1 - sprite_size / 2.0,
-                    WHITE,
-                    dtp,
-                );
-            }
-        }
-
-        draw_text(
-            &format!("Press 'R' to reset"),
-            self.info_square.x + 20.0,
-            self.info_square.y + 20.0,
-            20.0,
-            BLACK,
-        );
-
-        draw_text(
-            &format!("Press 'N' for new game (when the current game is won)"),
-            self.info_square.x + 20.0,
-            self.info_square.y + 40.0,
-            20.0,
-            BLACK,
-        );
-
-        draw_text(
-            &format!("Press 'D' to toggle debug mode"),
-            self.info_square.x + 20.0,
-            self.info_square.y + 60.0,
-            20.0,
-            GRAY,
-        );
-
-        if self.debug {
-            let mut debug_lines = vec![];
-            let (mx, my) = mouse_position();
-            let hover_square = self.squares.iter().find(|s| {
-                let c = Circle::new(mx, my, 0.0);
-                if c.overlaps_rect(&s.rect) {
-                    return true;
-                }
-                return false;
-            });
-            debug_lines.push(format!("Game State: {}", self.state));
-            debug_lines.push(format!("Board State: {}", self.board.game_state));
-            if let Some(hover_square) = hover_square {
-                debug_lines.push(format!("Hover: [ {}, {} ]", hover_square.i, hover_square.j));
-            }
-            self.add_debug_info(debug_lines);
-
-            self.show_fps();
-        }
-    }
-
-    fn handle_input(&mut self) {
-        if is_key_released(KeyCode::R) {
-            self.reset();
-            return;
-        }
-
-        if is_key_released(KeyCode::N) {
-            if let GameState::GameOver(_) = self.state {
-                self.next_puzzle();
-            }
-            return;
-        }
-
-        if is_key_released(KeyCode::D) {
-            self.debug = !self.debug;
-            return;
-        }
-
-        if is_key_released(KeyCode::Q) {
-            std::process::exit(0);
-        }
-
-        if is_mouse_button_released(MouseButton::Left) {
-            let current_state = self.state.clone();
-            let new_state = match current_state {
-                GameState::SelectSource(previous_target) => {
-                    self.handle_select_source(mouse_position(), previous_target)
-                }
-                GameState::SelectTarget(source) => {
-                    let next = self.handle_select_target(mouse_position(), source);
-                    if let GameState::SelectTarget(_) = next {
-                        self.reset_squares();
-                        GameState::SelectSource(None)
-                    } else {
-                        next
-                    }
-                }
-                GameState::GameOver(previous_target) => GameState::GameOver(previous_target),
-            };
-            self.state = new_state;
-            return;
-        }
-
-        if is_mouse_button_pressed(MouseButton::Left) {
-            let current_state = self.state.clone();
-            let new_state = match current_state {
-                GameState::SelectSource(previous_target) => {
-                    self.handle_select_source(mouse_position(), previous_target)
-                }
-                GameState::SelectTarget(source) => GameState::SelectTarget(source),
-                GameState::GameOver(previous_target) => GameState::GameOver(previous_target),
-            };
-
-            self.state = new_state;
-        }
-    }
-
-    fn handle_select_source(
-        &mut self,
-        mouse_position: (f32, f32),
-        previous_target: Option<(usize, usize)>,
-    ) -> GameState {
-        self.reset_squares();
-        let (x, y) = mouse_position;
-        let mouse = Circle::new(x, y, 0.0);
-        let mut selected = None;
-        for square in &mut self.squares {
-            if mouse.overlaps_rect(&square.rect) {
-                if let Some(_) = self.board.cells[square.i][square.j] {
-                    selected = Some((square.i, square.j));
-                }
-            }
-        }
-
-        if let Some((i, j)) = selected {
-            self.get(i, j).is_source = true;
-            let mut target_squares = vec![];
-            for m in self.board.legal_moves.iter() {
-                if m.from.file == i && m.from.rank == j {
-                    target_squares.push((m.to.file, m.to.rank));
-                }
-            }
-
-            for (i, j) in target_squares {
-                self.get(i, j).is_target = true;
-            }
-
-            return GameState::SelectTarget(selected.unwrap());
-        }
-
-        if let Some((i, j)) = previous_target {
-            self.get(i, j).is_previous_target = true;
-        }
-
-        return GameState::SelectSource(None);
-    }
-
-    fn handle_select_target(
-        &mut self,
-        mouse_position: (f32, f32),
-        source: (usize, usize),
-    ) -> GameState {
-        let (x, y) = mouse_position;
-        let mouse = Circle::new(x, y, 0.0);
-
-        let mut selected = None;
-        for square in &mut self.squares {
-            if mouse.overlaps_rect(&square.rect) {
-                if let Some(_) = self.board.cells[square.i][square.j] {
-                    selected = Some((square.i, square.j));
-                }
-            }
-        }
-
-        let (s_x, s_y) = source;
-        let Some((x, y)) = selected else {
-            self.get(s_x, s_y).is_source = true;
-            return GameState::SelectTarget(source);
-        };
-
-        if x == s_x && y == s_y {
-            self.get(s_x, s_y).is_source = true;
-            return GameState::SelectTarget(source);
-        }
-
-        let mut is_legal = false;
-        if self.get(x, y).is_target {
-            is_legal = true;
-        }
-
-        if is_legal {
-            let m = self.board.legal_moves.iter().find(|m| {
-                m.from.file == s_x && m.from.rank == s_y && m.to.file == x && m.to.rank == y
-            });
-
-            let m = m.expect("legal move should be found");
-
-            self.board.make_move(m.clone());
-
-            if self.board.game_state == BoardState::Won || self.board.game_state == BoardState::Lost
-            {
-                self.reset_squares();
-                return GameState::GameOver((x, y));
-            }
-
-            self.reset_squares();
-            self.get(x, y).is_target = true;
-            return GameState::SelectSource(Some((x, y)));
-        }
-
-        self.reset_squares();
-        return GameState::SelectSource(None);
-    }
-
-    fn reset(&mut self) {
-        self.board = self.original_board.clone();
-        self.reset_squares();
-        self.state = GameState::SelectSource(None);
-    }
-
-    fn next_puzzle(&mut self) {
-        self.reset();
-        let generate = generator::generate(6, 100);
-        let board = generate.board().expect("No puzzle was generated");
-        self.original_board = board.clone();
-        self.board = board;
-    }
-
-    fn reset_squares(&mut self) {
-        for i in 0..self.num_squares {
-            for j in 0..self.num_squares {
-                self.get(i, j).is_source = false;
-                self.get(i, j).is_target = false;
-            }
-        }
-    }
-
-    fn add_debug_info(&self, lines: Vec<String>) {
-        let mut y = 20.0;
-        for line in lines {
-            draw_text(&line, 10.0, y, 20.0, BLACK);
-            y += 25.0;
-        }
-    }
-
-    fn show_fps(&self) {
-        let fps = get_fps();
-        draw_text(
-            &format!("FPS: {}", fps),
-            10.0,
-            screen_height() - 20.0,
-            20.0,
-            BLACK,
-        );
-    }
-}
-
-impl Display for GameState {
-    fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
-        match self {
-            GameState::SelectSource(Some(x)) => write!(f, "Select Source [ {}, {} ]", x.0, x.1),
-            GameState::SelectSource(None) => write!(f, "Select Source [ ]"),
-            GameState::SelectTarget(x) => write!(f, "Select Target [ {}, {} ]", x.0, x.1),
-            GameState::GameOver(x) => write!(f, "Game Over [ {}, {} ]", x.0, x.1),
-        }
-    }
-}