commit 4f87e793242262db8c9d1a56ca3a85ed567fea70
Author: Pau Costa <mico@micodev.es>
Date:   Wed Nov 1 13:05:38 2023 +0100

    :tada: Initial commit

diff --git a/.gitignore b/.gitignore
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diff --git a/Cargo.lock b/Cargo.lock
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diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..1a0bf2c
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "flappy"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+bracket-lib = "~0.8.1"
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..3ae5482
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,220 @@
+
+use bracket_lib::prelude::*;
+
+enum GameMode {
+    Menu,
+    Playing,
+    End,
+}
+
+const SCREEN_WIDTH : i32 = 80;
+const SCREEN_HEIGHT : i32 = 50;
+const FRAME_DURATION : f32 = 75.0;
+
+struct Obstacle {
+    x: i32,
+    gap_y: i32,
+    size: i32
+}
+
+impl Obstacle{
+    fn new(x: i32, score: i32) -> Self{
+        let mut random = RandomNumberGenerator::new();
+        Obstacle {
+            x,
+            gap_y: random.range(10, 40),
+            size: i32::max(2, 20 - score)
+        }
+    }
+
+    fn render(&mut self, ctx: &mut BTerm, player_x : i32){
+        let screen_x = self.x  - player_x;
+        let half_size = self.size / 2;
+
+        // Draw the top half of the obstacle
+        for y in 0..self.gap_y - half_size{
+            ctx.set(
+                screen_x,
+                y,
+                RED,
+                BLACK,
+                to_cp437('|'),
+            );
+        }
+        // Draw the bottom half of the obstacle
+        for y in self.gap_y + half_size..SCREEN_HEIGHT{
+            ctx.set(
+                screen_x,
+                y,
+                RED,
+                BLACK,
+                to_cp437('|')
+            )
+        }
+    }
+
+    fn hit_obstacle(&self, player: &Dragon) -> bool{
+        let half_size = self.size / 2;
+        let does_x_match = player.x == self.x;
+        let player_above_gap = player.y < self.gap_y - half_size;
+        let player_below_gap = player.y > self.gap_y + half_size;
+        
+        does_x_match && ( player_below_gap || player_above_gap)
+    }
+
+}
+
+struct Dragon {
+    x: i32,
+    y: i32,
+    velocity: f32,
+}
+
+impl Dragon{
+    fn new(x: i32, y: i32)-> Self {
+        Dragon{
+            x,
+            y,
+            velocity: 0.0,
+        }
+    }
+
+    fn render(&mut self, ctx: &mut BTerm){
+        ctx.set(
+            0,
+            self. y,
+            YELLOW,
+            BLACK,
+            to_cp437('@')
+        );
+    }
+
+    fn gravity_and_move(&mut self){
+        if self.velocity < 2.0 {
+            self.velocity += 0.2;
+        }
+        self.y += self.velocity as i32;
+        self.x += 1;
+        if self.y < 0 {
+            self.y = 0;
+        }
+    }
+
+    fn flap(&mut self){
+        self.velocity = - 2.0;
+    }
+}
+
+struct State{
+    mode: GameMode,
+    player: Dragon,
+    frame_time: f32,
+    score: i32,
+    obstacle: Obstacle,
+}
+
+impl State{
+    fn new()-> Self{
+        State { 
+        mode: GameMode::Menu, 
+        player: Dragon::new(5, 25),
+        frame_time: 0.0,
+        obstacle: Obstacle::new(SCREEN_WIDTH, 0),
+        score: 0,
+    }
+        }
+
+    fn play(&mut self, ctx: &mut BTerm){
+        ctx.cls_bg(NAVY);
+        self.frame_time += ctx.frame_time_ms;
+        if self.frame_time > FRAME_DURATION {
+            self.frame_time = 0.0;
+            self.player.gravity_and_move();
+        }
+        if let Some(VirtualKeyCode::Space) = ctx.key {
+            self.player.flap();
+        }
+        self.player.render(ctx);
+        
+        ctx.print(0,0, "Press SPACE to flap");
+        ctx.print(0,1, &format!("Score: {}", self.score));
+
+        self.obstacle.render(ctx,self.player.x);
+        // if the player is over the obstacle, update
+        // score and create a new obstacle
+        if self.player.x > self.obstacle.x {
+            self.score += 1;
+            self.obstacle = Obstacle::new(
+                self.player.x + SCREEN_WIDTH, self.score
+            );
+        }
+        // End conditions
+        // Hit the floor:
+        if self.player.y > SCREEN_HEIGHT {
+            self.mode = GameMode::End;
+        }
+        // Hit an obstacle
+        if self.obstacle.hit_obstacle(&self.player){
+            self.mode = GameMode::End;
+        }
+    }
+    fn dead(&mut self, ctx: &mut BTerm){
+        //Print text to screen
+        ctx.cls();
+        ctx.print_centered(5, "You are dead!");
+        ctx.print_centered(6, &format!("You earned {} points", self.score));
+        ctx.print_centered(8, "(P) Play Game");
+        ctx.print_centered(9, "(Q) Quit Game");
+        // Handle user input
+        if let Some(key) = ctx.key {
+            match key {
+                VirtualKeyCode::P => self.restart(),
+                VirtualKeyCode::Q => ctx.quitting = true,
+                _ => {}
+            }
+        }
+
+    }
+    fn main_menu(&mut self, ctx: &mut BTerm){
+        // Print text to screen
+        ctx.cls();
+        ctx.print_centered(5, "Welcome to Flappy Dragon");
+        ctx.print_centered(8, "(P) Play Game");
+        ctx.print_centered(9, "(Q) Quit Game");
+        // Handle user input
+        if let Some(key) = ctx.key {
+            match key {
+                VirtualKeyCode::P => self.restart(),
+                VirtualKeyCode::Q => ctx.quitting = true,
+                _ => {}
+            }
+        }
+    }
+    fn restart(&mut self){
+        self.player = Dragon::new(5, 25);
+        self.frame_time = 0.0;
+        self.obstacle = Obstacle::new(SCREEN_WIDTH, 0);
+        self.score = 0;
+
+        self.mode = GameMode::Playing;
+    }
+}
+
+impl GameState for State{
+    fn tick(&mut self, ctx: &mut BTerm){
+        match self.mode{
+            GameMode::Menu => self.main_menu(ctx),
+            GameMode::End => self.dead(ctx),
+            GameMode::Playing => self.play(ctx),
+        }  
+    }
+}
+
+fn main() -> BError {
+    println!("Hello, world!");
+    let context = BTermBuilder::simple80x50()
+        .with_title("Flappy Dragon")
+        .build()?;
+
+    main_loop(context, State::new())
+}