player texture and animation

.gitignore

@@ -8,3 +8,5 @@ Cargo.lock
 
 # These are backup files generated by rustfmt
 **/*.rs.bk
+
+/*.gif

game/assets/configs/application.json

@@ -41,6 +41,13 @@
             20,
             20,
             255
+        ],
+        "white": [
+            188,
+            188,
+            188,
+            188
         ]
-    }
+    },
+    "animation_fps": 15
 }

game/src/character/collisions.rs

@@ -0,0 +1,35 @@
+use raylib::math::{Rectangle, Vector2};
+
+use super::MainCharacter;
+
+const GRAVITY_PPS: f32 = 2.0;
+
+pub fn modify_player_based_on_forces(player: &mut MainCharacter) -> Result<(), ()> {
+    // Convert the player to a rectangle
+    let predicted_player_position = player.position + player.velocity;
+    let player_rect = Rectangle::new(
+        predicted_player_position.x - (player.size.x / 2.0),
+        predicted_player_position.y - (player.size.x / 2.0),
+        player.size.x,
+        player.size.y,
+    );
+
+    // Calculate a generic "floor" to always collide with
+    let floor_rect = Rectangle::new(f32::MIN, 0.0, f32::MAX, 1.0);
+
+    // If the player is colliding, only apply the x force
+    if (floor_rect.check_collision_recs(&player_rect) || player_rect.y + player_rect.height > floor_rect.y)
+        && player.velocity.y > 0.0
+    {
+        player.velocity.y = 0.0;
+    }
+
+    // TODO: Error out if colliding in the X direction
+
+    // Apply the force
+    player.position += player.velocity;
+
+    // Apply gravity
+    player.velocity.y += GRAVITY_PPS;
+    Ok(())
+}

game/src/character/mod.rs

@@ -1,22 +1,62 @@
+pub mod collisions;
 pub mod render;
 
-use raylib::math::Vector2;
+use chrono::{DateTime, Utc};
+use raylib::{math::Vector2, texture::Texture2D};
 
-#[derive(Debug, Clone)]
+use crate::utilities::anim_render::AnimatedSpriteSheet;
+
+use self::collisions::modify_player_based_on_forces;
+
+#[derive(Debug, Default)]
+pub enum CharacterState {
+    #[default]
+    Running,
+    Jumping,
+    Dashing,
+}
+
+#[derive(Debug)]
 pub struct MainCharacter {
     pub position: Vector2,
+    pub velocity: Vector2,
     pub size: Vector2,
+    pub sprite_sheet: AnimatedSpriteSheet,
+    pub current_state: CharacterState,
+    pub state_set_timestamp: DateTime<Utc>,
 }
 
 impl MainCharacter {
-    pub fn new(position: Vector2) -> Self {
+    pub fn new(position: Vector2, sprite_sheet: Texture2D) -> Self {
         Self {
             position,
-            size: Vector2::new(60.0, 80.0),
+            velocity: Vector2::new(20.0, 0.0),
+            size: Vector2::new(100.0, 130.0),
+            sprite_sheet: AnimatedSpriteSheet::new(
+                sprite_sheet,
+                Vector2::new(300.0, 300.0),
+                3,
+                8,
+                6,
+            ),
+            current_state: CharacterState::default(),
+            state_set_timestamp: Utc::now(),
         }
     }
 
-    pub fn apply_force(&mut self, force: Vector2) {
-        self.position += force;
+    pub fn apply_force(&mut self, force: Vector2) -> Option<()> {
+        self.velocity = force;
+        modify_player_based_on_forces(self).unwrap();
+        // self.position = calculate_player_collisions(&self).unwrap();
+        Some(())
+    }
+
+    pub fn update_gravity(&mut self) {
+        modify_player_based_on_forces(self).unwrap();
+    }
+
+    pub fn set_state(&mut self, state: CharacterState) {
+        self.current_state = state;
+        self.state_set_timestamp = Utc::now();
     }
 }

game/src/character/render.rs

@@ -1,15 +1,33 @@
 use std::ops::{Div, Sub};
 
+use chrono::Utc;
 use raylib::prelude::*;
+use tracing::log::trace;
 
-use crate::utilities::non_ref_raylib::HackedRaylibHandle;
+use crate::{utilities::non_ref_raylib::HackedRaylibHandle, GameConfig};
 
 use super::MainCharacter;
 
 pub fn render_character_in_camera_space(
     raylib: &mut RaylibMode2D<'_, HackedRaylibHandle>,
     player: &MainCharacter,
+    config: &GameConfig,
 ) {
+    // Calculate the time since the start of the state
+    let time_since_state_change = Utc::now() - player.state_set_timestamp;
 
-    raylib.draw_rectangle_v(player.position.sub(player.size.div(2.0)), player.size, Color::WHITE);
+    // Calculate the number of frames since state change
+    let frames_since_state_change = ((time_since_state_change.num_milliseconds() as f64 / 1000.0) * config.animation_fps as f64) as f32;
+
+    trace!(
+        "Rendering player frame: {} ({})",
+        frames_since_state_change % player.sprite_sheet.sprite_count as f32,
+        frames_since_state_change
+    );
+    player.sprite_sheet.render(
+        raylib,
+        player.position.sub(player.size.div(2.0)),
+        Some(Vector2::new(player.size.y, player.size.y)),
+        Some((frames_since_state_change % player.sprite_sheet.sprite_count as f32).floor() as usize),
+    );
 }

game/src/scenes/ingame_scene/hud.rs

@@ -10,5 +10,8 @@ impl ScreenSpaceRender for InGameScreen {
     ) {
         // Calculate the logo position
         let screen_size = raylib.get_screen_size();
+
+        // Draw a thin glow box around the screen
+        raylib.draw_rectangle_lines(0, 0, screen_size.x as i32, screen_size.y as i32, config.colors.red);
     }
 }

game/src/scenes/ingame_scene/mod.rs

@@ -1,11 +1,7 @@
 use dirty_fsm::{Action, ActionFlag};
 use raylib::prelude::*;
 
-use crate::{
-    character::MainCharacter,
-    context::GameContext,
-    utilities::render_layer::{FrameUpdate, ScreenSpaceRender, WorldSpaceRender},
-};
+use crate::{character::{CharacterState, MainCharacter}, context::GameContext, utilities::render_layer::{FrameUpdate, ScreenSpaceRender, WorldSpaceRender}};
 
 use super::{Scenes, ScreenError};
 use tracing::{debug, trace};
@@ -22,7 +18,7 @@ pub struct InGameScreen {
 
 impl InGameScreen {
     /// Construct a new `InGameScreen`
-    pub fn new() -> Self {
+    pub fn new(player_sprite_sheet: Texture2D) -> Self {
         Self {
             camera: Camera2D {
                 offset: Vector2::zero(),
@@ -30,7 +26,7 @@ impl InGameScreen {
                 rotation: 0.0,
                 zoom: 1.0,
             },
-            player: MainCharacter::new(Vector2::new(0.0, -45.0)),
+            player: MainCharacter::new(Vector2::new(0.0, -80.0), player_sprite_sheet),
         }
     }
 }
@@ -44,6 +40,9 @@ impl Action<Scenes, ScreenError, GameContext> for InGameScreen {
     fn on_first_run(&mut self, _context: &GameContext) -> Result<(), ScreenError> {
         debug!("Running InGameScreen for the first time");
 
+        // Set the player to running
+        self.player.set_state(CharacterState::Running);
+
         Ok(())
     }
 

game/src/scenes/ingame_scene/update.rs

@@ -1,27 +1,32 @@
 use std::ops::Div;
 
 use super::InGameScreen;
-use crate::{GameConfig, utilities::{non_ref_raylib::HackedRaylibHandle, render_layer::FrameUpdate}};
+use crate::{
+    utilities::{non_ref_raylib::HackedRaylibHandle, render_layer::FrameUpdate},
+    GameConfig,
+};
 use chrono::Duration;
 use raylib::prelude::*;
 
 impl FrameUpdate for InGameScreen {
-    fn update(&mut self, raylib: &HackedRaylibHandle, delta_seconds: &Duration,
-        config: &GameConfig) {
+    fn update(
+        &mut self,
+        raylib: &HackedRaylibHandle,
+        delta_seconds: &Duration,
+        config: &GameConfig,
+    ) {
         // Set the camera's offset based on screen size
-        self.camera.offset = raylib.get_screen_size().div(Vector2::new(2.0, 1.25));
-        self.camera.target = Vector2::new(
-            self.player.position.x,
-            self.camera.target.y,
-        );
+        self.camera.offset = raylib.get_screen_size().div(Vector2::new(2.0, 1.05));
+        self.camera.target = Vector2::new(self.player.position.x, self.camera.target.y);
 
         // Check the only possible keyboard inputs
-        let is_jump = raylib.is_key_down(KeyboardKey::KEY_SPACE);
+        let is_jump = raylib.is_key_pressed(KeyboardKey::KEY_SPACE);
         let is_dash = raylib.is_key_down(KeyboardKey::KEY_LEFT_SHIFT);
         let is_pause = raylib.is_key_down(KeyboardKey::KEY_ESCAPE);
 
         if is_jump {
-            self.player.apply_force(Vector2::new(0.0, -1.0));
-        }
+            self.player.apply_force(Vector2::new(0.0, -30.0));
+        }
+        self.player.update_gravity();
     }
 }

game/src/scenes/ingame_scene/world.rs

@@ -1,25 +1,33 @@
 use std::ops::Mul;
 
 use super::InGameScreen;
-use crate::{GameConfig, character::render::render_character_in_camera_space, utilities::{non_ref_raylib::HackedRaylibHandle, render_layer::WorldSpaceRender}};
+use crate::{
+    character::render::render_character_in_camera_space,
+    utilities::{non_ref_raylib::HackedRaylibHandle, render_layer::WorldSpaceRender},
+    GameConfig,
+};
 use raylib::prelude::*;
 
 impl WorldSpaceRender for InGameScreen {
-    fn render_world_space(&self, raylib: &mut RaylibMode2D<'_, HackedRaylibHandle>,
-    config: &GameConfig) {
+    fn render_world_space(
+        &self,
+        raylib: &mut RaylibMode2D<'_, HackedRaylibHandle>,
+        config: &GameConfig,
+    ) {
         // Render the player
-        render_character_in_camera_space(raylib, &self.player);
+        render_character_in_camera_space(raylib, &self.player, &config);
 
         // Render the floor as a line
         let screen_world_zero = raylib.get_screen_to_world2D(Vector2::zero(), self.camera);
-        let screen_world_size = raylib.get_screen_to_world2D(raylib.get_screen_size().mul(2.0), self.camera);
+        let screen_world_size =
+            raylib.get_screen_to_world2D(raylib.get_screen_size().mul(2.0), self.camera);
 
         raylib.draw_rectangle(
             screen_world_zero.x as i32,
             0,
             screen_world_size.x as i32,
             5,
-            Color::WHITE,
+            config.colors.white,
         );
     }
 }

game/src/scenes/mod.rs

@@ -4,10 +4,13 @@ use self::{
 };
 use crate::{
     context::GameContext,
-    utilities::{datastore::ResourceLoadError, non_ref_raylib::HackedRaylibHandle},
+    utilities::{
+        datastore::{load_texture_from_internal_data, ResourceLoadError},
+        non_ref_raylib::HackedRaylibHandle,
+    },
 };
 use dirty_fsm::StateMachine;
-use raylib::RaylibThread;
+use raylib::{texture::Texture2D, RaylibThread};
 
 pub mod fsm_error_screen;
 pub mod ingame_scene;
@@ -40,6 +43,11 @@ pub fn build_screen_state_machine(
     StateMachine<Scenes, ScreenError, GameContext>,
     ScreenError,
 > {
+    // Load the various textures needed by the states
+    let player_sprite_sheet =
+        load_texture_from_internal_data(raylib_handle, thread, "character/player_run.png").unwrap();
+
+    // Set up the state machine
     let mut machine = StateMachine::new();
     machine.add_action(Scenes::FsmErrorScreen, FsmErrorScreen::new())?;
     machine.add_action(
@@ -47,6 +55,6 @@ pub fn build_screen_state_machine(
         LoadingScreen::new(raylib_handle, thread)?,
     )?;
     machine.add_action(Scenes::MainMenuScreen, MainMenuScreen::new())?;
-    machine.add_action(Scenes::InGameScene, InGameScreen::new())?;
+    machine.add_action(Scenes::InGameScene, InGameScreen::new(player_sprite_sheet))?;
     Ok(machine)
 }

game/src/utilities/anim_render.rs

@@ -0,0 +1,104 @@
+use raylib::{
+    color::Color,
+    math::{Rectangle, Vector2},
+    prelude::RaylibDraw,
+    texture::Texture2D,
+};
+
+#[derive(Debug)]
+pub struct AnimatedSpriteSheet {
+    texture: Texture2D,
+    sprite_size: Vector2,
+    sheet_width: usize,
+    pub sprite_count: usize,
+    default_sprite_id: usize,
+}
+
+impl AnimatedSpriteSheet {
+    /// Construct a new AnimatedSpriteSheet
+    pub fn new(
+        texture: Texture2D,
+        sprite_size: Vector2,
+        sheet_width: usize,
+        sprite_count: usize,
+        default_sprite_id: usize,
+    ) -> Self {
+        Self {
+            texture,
+            sprite_size,
+            sheet_width,
+            sprite_count,
+            default_sprite_id,
+        }
+    }
+
+    pub fn render<T>(
+        &self,
+        raylib: &mut T,
+        position: Vector2,
+        scaled_size: Option<Vector2>,
+        sprite_id: Option<usize>,
+    ) where
+        T: RaylibDraw,
+    {
+        let sprite_id = sprite_id.unwrap_or(self.default_sprite_id);
+        let sprite_id = if sprite_id >= self.sprite_count {
+            self.default_sprite_id
+        } else {
+            sprite_id
+        };
+
+        let sprite_rect = Rectangle::new(
+            (sprite_id % self.sheet_width) as f32 * self.sprite_size.x,
+            (sprite_id / self.sheet_width) as f32 * self.sprite_size.y,
+            self.sprite_size.x,
+            self.sprite_size.y,
+        );
+
+        let scaled_size = scaled_size.unwrap_or(self.sprite_size);
+
+        raylib.draw_texture_pro(
+            &self.texture,
+            sprite_rect,
+            Rectangle::new(position.x, position.y, scaled_size.x, scaled_size.y),
+            Vector2::zero(),
+            0.0,
+            Color::WHITE,
+        );
+    }
+
+    // {
+    //     let sprite_id = match sprite_id {
+    //         Some(id) => {
+    //             if id >= self.sprite_count {
+    //                 self.default_sprite_id
+    //             } else {
+    //                 id
+    //             }
+    //         }
+    //         None => self.default_sprite_id,
+    //     };
+
+    //     let sprite_x = sprite_id % self.sheet_width;
+    //     let sprite_y = sprite_id / self.sheet_width;
+
+    //     raylib.draw_texture_pro(
+    //         &self.texture,
+    //         Rectangle {
+    //             x: sprite_x as f32,
+    //             y: sprite_y as f32,
+    //             width: self.sprite_size.x,
+    //             height: self.sprite_size.y,
+    //         },
+    //         Rectangle {
+    //             x: position.x,
+    //             y: position.y,
+    //             width: self.sprite_size.x,
+    //             height: self.sprite_size.y,
+    //         },
+    //         Vector2::zero(),
+    //         0.0,
+    //         Color::WHITE,
+    //     );
+    // }
+}

game/src/utilities/game_config.rs

@@ -20,6 +20,7 @@ pub struct ColorTheme {
     pub yellow: Color,
     pub pink: Color,
     pub background: Color,
+    pub white: Color,
 }
 
 #[derive(Debug, Clone, Deserialize)]
@@ -28,6 +29,7 @@ pub struct GameConfig {
     pub base_window_size: (i32, i32),
     pub sentry_dsn: String,
     pub colors: ColorTheme,
+    pub animation_fps: usize,
 }
 
 impl GameConfig {

game/src/utilities/mod.rs

@@ -6,3 +6,4 @@ pub mod math;
 pub mod non_ref_raylib;
 pub mod render_layer;
 pub mod shaders;
+pub mod anim_render;