initial sdl2 port

Cargo.toml

@@ -66,7 +66,7 @@ num-derive = "0.3.2"
 num-traits = "0.2.12"
 paste = "1.0.0"
 pretty_env_logger = "0.4.0"
-sdl2 = { version = "0.34.3", optional = true }
+sdl2 = { version = "0.34.3", optional = true, features = ["unsafe_textures"] }
 serde = { version = "1", features = ["derive"] }
 serde_derive = "1"
 serde_yaml = "0.8"

src/bmfont_renderer.rs

@@ -28,7 +28,6 @@ impl BMFontRenderer {
         let font = BMFont::load_from(filesystem::open(ctx, &full_path)?)?;
         let mut pages = Vec::new();
 
-        println!("stem: {:?}", stem);
         let (zeros, _, _) = FILE_TYPES
             .iter()
             .map(|ext| (1, ext, format!("{}_0{}", stem.to_string_lossy(), ext)))
@@ -41,7 +40,6 @@ impl BMFontRenderer {
 
         for i in 0..font.pages {
             let page_path = format!("{}_{:02$}", stem.to_string_lossy(), i, zeros);
-            println!("x: {}", &page_path);
 
             pages.push(page_path);
         }

src/common.rs

@@ -234,6 +234,22 @@ impl Direction {
     }
 }
 
+#[derive(Debug, Clone, Copy)]
+pub struct Point<T: Num + PartialOrd + Copy = isize> {
+    pub x: T,
+    pub y: T,
+}
+
+impl<T: Num + PartialOrd + Copy> Point<T> {
+    #[inline(always)]
+    pub fn new(x: T, y: T) -> Point<T> {
+        Point {
+            x,
+            y,
+        }
+    }
+}
+
 #[derive(Debug, Clone, Copy)]
 pub struct Rect<T: Num + PartialOrd + Copy = isize> {
     pub left: T,
@@ -243,6 +259,7 @@ pub struct Rect<T: Num + PartialOrd + Copy = isize> {
 }
 
 impl<T: Num + PartialOrd + Copy> Rect<T> {
+    #[inline(always)]
     pub fn new(left: T, top: T, right: T, bottom: T) -> Rect<T> {
         Rect {
             left,
@@ -252,6 +269,7 @@ impl<T: Num + PartialOrd + Copy> Rect<T> {
         }
     }
 
+    #[inline(always)]
     pub fn new_size(x: T, y: T, width: T, height: T) -> Rect<T> {
         Rect {
             left: x,
@@ -260,6 +278,7 @@ impl<T: Num + PartialOrd + Copy> Rect<T> {
             bottom: y.add(height),
         }
     }
+
     pub fn width(&self) -> T {
         if let Some(Ordering::Greater) = self.left.partial_cmp(&self.right) {
             self.left.sub(self.right)
@@ -392,30 +411,30 @@ impl Color {
     }
 
     /// Create a new `Color` from four `u8`'s in the range `[0-255]`
-    pub const fn from_rgba(r: u8, g: u8, b: u8, a: u8) -> Color {
+    pub fn from_rgba(r: u8, g: u8, b: u8, a: u8) -> Color {
         Color::from((r, g, b, a))
     }
 
     /// Create a new `Color` from three u8's in the range `[0-255]`,
     /// with the alpha component fixed to 255 (opaque)
-    pub const fn from_rgb(r: u8, g: u8, b: u8) -> Color {
+    pub fn from_rgb(r: u8, g: u8, b: u8) -> Color {
         Color::from((r, g, b))
     }
 
     /// Return a tuple of four `u8`'s in the range `[0-255]` with the `Color`'s
     /// components.
-    pub const fn to_rgba(self) -> (u8, u8, u8, u8) {
+    pub fn to_rgba(self) -> (u8, u8, u8, u8) {
         self.into()
     }
 
     /// Return a tuple of three `u8`'s in the range `[0-255]` with the `Color`'s
     /// components.
-    pub const fn to_rgb(self) -> (u8, u8, u8) {
+    pub fn to_rgb(self) -> (u8, u8, u8) {
         self.into()
     }
 
     /// Convert a packed `u32` containing `0xRRGGBBAA` into a `Color`
-    pub const fn from_rgba_u32(c: u32) -> Color {
+    pub fn from_rgba_u32(c: u32) -> Color {
         let c = c.to_be_bytes();
 
         Color::from((c[0], c[1], c[2], c[3]))
@@ -423,21 +442,21 @@ impl Color {
 
     /// Convert a packed `u32` containing `0x00RRGGBB` into a `Color`.
     /// This lets you do things like `Color::from_rgb_u32(0xCD09AA)` easily if you want.
-    pub const fn from_rgb_u32(c: u32) -> Color {
+    pub fn from_rgb_u32(c: u32) -> Color {
         let c = c.to_be_bytes();
 
         Color::from((c[1], c[2], c[3]))
     }
 
     /// Convert a `Color` into a packed `u32`, containing `0xRRGGBBAA` as bytes.
-    pub const fn to_rgba_u32(self) -> u32 {
+    pub fn to_rgba_u32(self) -> u32 {
         let (r, g, b, a): (u8, u8, u8, u8) = self.into();
 
         u32::from_be_bytes([r, g, b, a])
     }
 
     /// Convert a `Color` into a packed `u32`, containing `0x00RRGGBB` as bytes.
-    pub const fn to_rgb_u32(self) -> u32 {
+    pub fn to_rgb_u32(self) -> u32 {
         let (r, g, b, _a): (u8, u8, u8, u8) = self.into();
 
         u32::from_be_bytes([0, r, g, b])
@@ -515,4 +534,4 @@ impl From<Color> for [f32; 4] {
     fn from(color: Color) -> Self {
         [color.r, color.g, color.b, color.a]
     }
-}
+}

src/engine_constants/mod.rs

@@ -216,7 +216,7 @@ pub struct EngineConstants {
     pub world: WorldConsts,
     pub npc: NPCConsts,
     pub weapon: WeaponConsts,
-    pub tex_sizes: CaseInsensitiveHashMap<(usize, usize)>,
+    pub tex_sizes: CaseInsensitiveHashMap<(u16, u16)>,
     pub textscript: TextScriptConsts,
     pub title: TitleConsts,
     pub font_path: String,

src/framework/backend.rs

@@ -1,9 +1,38 @@
+use crate::common::{Color, Rect, Point};
+use crate::framework::context::Context;
+use crate::framework::error::GameResult;
 use crate::Game;
 
-pub(crate) trait Backend {
-    fn create_event_loop(&self) -> Box<dyn BackendEventLoop>;
+pub trait Backend {
+    fn create_event_loop(&self) -> GameResult<Box<dyn BackendEventLoop>>;
 }
 
-pub(crate) trait BackendEventLoop {
-    fn run(&self, game: &mut Game);
-}
+pub trait BackendEventLoop {
+    fn run(&mut self, game: &mut Game, ctx: &mut Context);
+
+    fn new_renderer(&self) -> GameResult<Box<dyn BackendRenderer>>;
+}
+
+pub trait BackendRenderer {
+    fn clear(&mut self, color: Color);
+
+    fn present(&mut self) -> GameResult;
+
+    fn create_texture(&mut self, width: u16, height: u16, data: &[u8]) -> GameResult<Box<dyn BackendTexture>>;
+}
+
+pub trait BackendTexture {
+    fn dimensions(&self) -> (u16, u16);
+    fn add(&mut self, command: SpriteBatchCommand);
+    fn clear(&mut self);
+    fn draw(&mut self) -> GameResult;
+}
+
+pub fn init_backend() -> GameResult<Box<dyn Backend>> {
+    crate::framework::backend_sdl2::SDL2Backend::new()
+}
+
+pub enum SpriteBatchCommand {
+    DrawRect(Rect<f32>, Rect<f32>),
+    DrawRectTinted(Rect<f32>, Rect<f32>, Color),
+}

src/framework/backend_sdl2.rs

@@ -0,0 +1,420 @@
+use core::mem;
+use std::cell::RefCell;
+use std::rc::Rc;
+
+use sdl2::{EventPump, keyboard, pixels, Sdl};
+use sdl2::event::{Event, WindowEvent};
+use sdl2::keyboard::Scancode;
+use sdl2::pixels::PixelFormatEnum;
+use sdl2::render::{BlendMode, Texture, TextureCreator, WindowCanvas};
+use sdl2::video::WindowContext;
+
+use crate::common::Color;
+use crate::framework::backend::{Backend, BackendEventLoop, BackendRenderer, BackendTexture, SpriteBatchCommand};
+use crate::framework::context::Context;
+use crate::framework::error::{GameError, GameResult};
+use crate::framework::keyboard::ScanCode;
+use crate::Game;
+
+pub struct SDL2Backend {
+    context: Sdl,
+}
+
+impl SDL2Backend {
+    pub fn new() -> GameResult<Box<dyn Backend>> {
+        let context = sdl2::init().map_err(|e| GameError::WindowError(e))?;
+
+        let backend = SDL2Backend {
+            context,
+        };
+
+        Ok(Box::new(backend))
+    }
+}
+
+impl Backend for SDL2Backend {
+    fn create_event_loop(&self) -> GameResult<Box<dyn BackendEventLoop>> {
+        SDL2EventLoop::new(&self.context)
+    }
+}
+
+struct SDL2EventLoop {
+    event_pump: EventPump,
+    refs: Rc<RefCell<SDL2Context>>,
+}
+
+struct SDL2Context {
+    canvas: WindowCanvas,
+    texture_creator: TextureCreator<WindowContext>,
+}
+
+impl SDL2EventLoop {
+    pub fn new(sdl: &Sdl) -> GameResult<Box<dyn BackendEventLoop>> {
+        let event_pump = sdl.event_pump().map_err(|e| GameError::WindowError(e))?;
+        let video = sdl.video().map_err(|e| GameError::WindowError(e))?;
+        let window = video.window("Cave Story (doukutsu-rs)", 640, 480)
+            .position_centered()
+            .resizable()
+            .build()
+            .map_err(|e| GameError::WindowError(e.to_string()))?;
+
+        let canvas = window.into_canvas()
+            .accelerated()
+            .present_vsync()
+            .build()
+            .map_err(|e| GameError::RenderError(e.to_string()))?;
+
+        let texture_creator = canvas.texture_creator();
+
+        let event_loop = SDL2EventLoop {
+            event_pump,
+            refs: Rc::new(RefCell::new(SDL2Context {
+                canvas,
+                texture_creator,
+            })),
+        };
+
+        Ok(Box::new(event_loop))
+    }
+}
+
+impl BackendEventLoop for SDL2EventLoop {
+    fn run(&mut self, game: &mut Game, ctx: &mut Context) {
+        let state = unsafe { &mut *game.state.get() };
+
+        loop {
+            for event in self.event_pump.poll_iter() {
+                match event {
+                    Event::Quit { .. } => {
+                        state.shutdown();
+                    }
+                    Event::Window { win_event, .. } => {
+                        match win_event {
+                            WindowEvent::Shown => {}
+                            WindowEvent::Hidden => {}
+                            WindowEvent::SizeChanged(width, height) => {
+                                ctx.screen_size = (width.max(1) as f32, height.max(1) as f32);
+                                state.handle_resize(ctx);
+                            }
+                            _ => {}
+                        }
+                    }
+                    Event::KeyDown { scancode, repeat, .. } => {
+                        if let Some(scancode) = scancode {
+                            if let Some(drs_scan) = conv_scancode(scancode) {
+                                game.key_down_event(drs_scan, repeat);
+                                ctx.keyboard_context.set_key(drs_scan, true);
+                            }
+                        }
+                    }
+                    Event::KeyUp { scancode, .. } => {
+                        if let Some(scancode) = scancode {
+                            if let Some(drs_scan) = conv_scancode(scancode) {
+                                ctx.keyboard_context.set_key(drs_scan, false);
+                            }
+                        }
+                    }
+                    _ => {}
+                }
+            }
+
+            game.update(ctx).unwrap();
+
+            if state.shutdown {
+                log::info!("Shutting down...");
+                break;
+            }
+
+            if state.next_scene.is_some() {
+                mem::swap(&mut game.scene, &mut state.next_scene);
+                state.next_scene = None;
+
+                game.scene.as_mut().unwrap().init(state, ctx).unwrap();
+                game.loops = 0;
+                state.frame_time = 0.0;
+            }
+
+            game.draw(ctx).unwrap();
+        }
+    }
+
+    fn new_renderer(&self) -> GameResult<Box<dyn BackendRenderer>> {
+        SDL2Renderer::new(self.refs.clone())
+    }
+}
+
+struct SDL2Renderer {
+    refs: Rc<RefCell<SDL2Context>>,
+}
+
+impl SDL2Renderer {
+    pub fn new(refs: Rc<RefCell<SDL2Context>>) -> GameResult<Box<dyn BackendRenderer>> {
+        Ok(Box::new(SDL2Renderer {
+            refs,
+        }))
+    }
+}
+
+fn to_sdl(color: Color) -> pixels::Color {
+    let (r, g, b, a) = color.to_rgba();
+    pixels::Color::RGBA(r, g, b, a)
+}
+
+impl BackendRenderer for SDL2Renderer {
+    fn clear(&mut self, color: Color) {
+        let mut refs = self.refs.borrow_mut();
+
+        refs.canvas.set_draw_color(to_sdl(color));
+        refs.canvas.clear();
+    }
+
+    fn present(&mut self) -> GameResult {
+        let mut refs = self.refs.borrow_mut();
+
+        refs.canvas.present();
+
+        Ok(())
+    }
+
+    fn create_texture(&mut self, width: u16, height: u16, data: &[u8]) -> GameResult<Box<dyn BackendTexture>> {
+        let mut refs = self.refs.borrow_mut();
+
+        let mut texture = refs.texture_creator
+            .create_texture_streaming(PixelFormatEnum::RGBA32, width as u32, height as u32)
+            .map_err(|e| GameError::RenderError(e.to_string()))?;
+
+        texture.set_blend_mode(BlendMode::Blend);
+        texture.with_lock(None, |buffer: &mut [u8], pitch: usize| {
+            for y in 0..(height as usize) {
+                for x in 0..(width as usize) {
+                    let offset = y * pitch + x * 4;
+                    let data_offset = (y * width as usize + x) * 4;
+
+                    buffer[offset] = data[data_offset];
+                    buffer[offset + 1] = data[data_offset + 1];
+                    buffer[offset + 2] = data[data_offset + 2];
+                    buffer[offset + 3] = data[data_offset + 3];
+                }
+            }
+        }).map_err(|e| GameError::RenderError(e.to_string()))?;
+
+        return Ok(Box::new(SDL2Texture {
+            refs: self.refs.clone(),
+            texture: Some(texture),
+            width,
+            height,
+            commands: vec![],
+        }));
+    }
+}
+
+struct SDL2Texture {
+    refs: Rc<RefCell<SDL2Context>>,
+    texture: Option<Texture>,
+    width: u16,
+    height: u16,
+    commands: Vec<SpriteBatchCommand>,
+}
+
+impl BackendTexture for SDL2Texture {
+    fn dimensions(&self) -> (u16, u16) {
+        (self.width, self.height)
+    }
+
+    fn add(&mut self, command: SpriteBatchCommand) {
+        self.commands.push(command);
+    }
+
+    fn clear(&mut self) {
+        self.commands.clear();
+    }
+
+    fn draw(&mut self) -> GameResult {
+        match self.texture.as_mut() {
+            None => Ok(()),
+            Some(texture) => {
+                let mut refs = self.refs.borrow_mut();
+                for command in self.commands.iter() {
+                    match command {
+                        SpriteBatchCommand::DrawRect(src, dest) => {
+                            texture.set_color_mod(255, 255, 255);
+                            texture.set_alpha_mod(255);
+
+                            refs.canvas.copy(texture,
+                                             Some(sdl2::rect::Rect::new(src.left as i32, src.top as i32, src.width() as u32, src.height() as u32)),
+                                             Some(sdl2::rect::Rect::new(dest.left as i32, dest.top as i32, dest.width() as u32, dest.height() as u32)))
+                                .map_err(|e| GameError::RenderError(e.to_string()))?;
+                        }
+                        SpriteBatchCommand::DrawRectTinted(src, dest, color) => {
+                            let (r, g, b, a) = color.to_rgba();
+                            texture.set_color_mod(r, g, b);
+                            texture.set_alpha_mod(a);
+
+                            refs.canvas.copy(texture,
+                                             Some(sdl2::rect::Rect::new(src.left as i32, src.top as i32, src.width() as u32, src.height() as u32)),
+                                             Some(sdl2::rect::Rect::new(dest.left as i32, dest.top as i32, dest.width() as u32, dest.height() as u32)))
+                                .map_err(|e| GameError::RenderError(e.to_string()))?;
+                        }
+                    }
+                }
+
+                Ok(())
+            }
+        }
+    }
+}
+
+impl Drop for SDL2Texture {
+    fn drop(&mut self) {
+        let mut texture_opt = None;
+        mem::swap(&mut self.texture, &mut texture_opt);
+
+        if let Some(texture) = texture_opt {
+            unsafe { texture.destroy(); }
+        }
+    }
+}
+
+fn conv_scancode(code: keyboard::Scancode) -> Option<ScanCode> {
+    match code {
+        Scancode::A => Some(ScanCode::A),
+        Scancode::B => Some(ScanCode::B),
+        Scancode::C => Some(ScanCode::C),
+        Scancode::D => Some(ScanCode::D),
+        Scancode::E => Some(ScanCode::E),
+        Scancode::F => Some(ScanCode::F),
+        Scancode::G => Some(ScanCode::G),
+        Scancode::H => Some(ScanCode::H),
+        Scancode::I => Some(ScanCode::I),
+        Scancode::J => Some(ScanCode::J),
+        Scancode::K => Some(ScanCode::K),
+        Scancode::L => Some(ScanCode::L),
+        Scancode::M => Some(ScanCode::M),
+        Scancode::N => Some(ScanCode::N),
+        Scancode::O => Some(ScanCode::O),
+        Scancode::P => Some(ScanCode::P),
+        Scancode::Q => Some(ScanCode::Q),
+        Scancode::R => Some(ScanCode::R),
+        Scancode::S => Some(ScanCode::S),
+        Scancode::T => Some(ScanCode::T),
+        Scancode::U => Some(ScanCode::U),
+        Scancode::V => Some(ScanCode::V),
+        Scancode::W => Some(ScanCode::W),
+        Scancode::X => Some(ScanCode::X),
+        Scancode::Y => Some(ScanCode::Y),
+        Scancode::Z => Some(ScanCode::Z),
+        Scancode::Num1 => Some(ScanCode::Key1),
+        Scancode::Num2 => Some(ScanCode::Key2),
+        Scancode::Num3 => Some(ScanCode::Key3),
+        Scancode::Num4 => Some(ScanCode::Key4),
+        Scancode::Num5 => Some(ScanCode::Key5),
+        Scancode::Num6 => Some(ScanCode::Key6),
+        Scancode::Num7 => Some(ScanCode::Key7),
+        Scancode::Num8 => Some(ScanCode::Key8),
+        Scancode::Num9 => Some(ScanCode::Key9),
+        Scancode::Num0 => Some(ScanCode::Key0),
+        Scancode::Return => Some(ScanCode::Return),
+        Scancode::Escape => Some(ScanCode::Escape),
+        Scancode::Backspace => Some(ScanCode::Backspace),
+        Scancode::Tab => Some(ScanCode::Tab),
+        Scancode::Space => Some(ScanCode::Space),
+        Scancode::Minus => Some(ScanCode::Minus),
+        Scancode::Equals => Some(ScanCode::Equals),
+        Scancode::LeftBracket => Some(ScanCode::LBracket),
+        Scancode::RightBracket => Some(ScanCode::RBracket),
+        Scancode::Backslash => Some(ScanCode::Backslash),
+        Scancode::NonUsHash => Some(ScanCode::NonUsHash),
+        Scancode::Semicolon => Some(ScanCode::Semicolon),
+        Scancode::Apostrophe => Some(ScanCode::Apostrophe),
+        Scancode::Grave => Some(ScanCode::Grave),
+        Scancode::Comma => Some(ScanCode::Comma),
+        Scancode::Period => Some(ScanCode::Period),
+        Scancode::Slash => Some(ScanCode::Slash),
+        Scancode::CapsLock => Some(ScanCode::Capslock),
+        Scancode::F1 => Some(ScanCode::F1),
+        Scancode::F2 => Some(ScanCode::F2),
+        Scancode::F3 => Some(ScanCode::F3),
+        Scancode::F4 => Some(ScanCode::F4),
+        Scancode::F5 => Some(ScanCode::F5),
+        Scancode::F6 => Some(ScanCode::F6),
+        Scancode::F7 => Some(ScanCode::F7),
+        Scancode::F8 => Some(ScanCode::F8),
+        Scancode::F9 => Some(ScanCode::F9),
+        Scancode::F10 => Some(ScanCode::F10),
+        Scancode::F11 => Some(ScanCode::F11),
+        Scancode::F12 => Some(ScanCode::F12),
+        Scancode::PrintScreen => Some(ScanCode::Sysrq),
+        Scancode::ScrollLock => Some(ScanCode::Scrolllock),
+        Scancode::Pause => Some(ScanCode::Pause),
+        Scancode::Insert => Some(ScanCode::Insert),
+        Scancode::Home => Some(ScanCode::Home),
+        Scancode::PageUp => Some(ScanCode::PageUp),
+        Scancode::Delete => Some(ScanCode::Delete),
+        Scancode::End => Some(ScanCode::End),
+        Scancode::PageDown => Some(ScanCode::PageDown),
+        Scancode::Right => Some(ScanCode::Right),
+        Scancode::Left => Some(ScanCode::Left),
+        Scancode::Down => Some(ScanCode::Down),
+        Scancode::Up => Some(ScanCode::Up),
+        Scancode::NumLockClear => Some(ScanCode::Numlock),
+        Scancode::KpDivide => Some(ScanCode::NumpadDivide),
+        Scancode::KpMultiply => Some(ScanCode::NumpadMultiply),
+        Scancode::KpMinus => Some(ScanCode::NumpadSubtract),
+        Scancode::KpPlus => Some(ScanCode::NumpadAdd),
+        Scancode::KpEnter => Some(ScanCode::NumpadEnter),
+        Scancode::Kp1 => Some(ScanCode::Numpad1),
+        Scancode::Kp2 => Some(ScanCode::Numpad2),
+        Scancode::Kp3 => Some(ScanCode::Numpad3),
+        Scancode::Kp4 => Some(ScanCode::Numpad4),
+        Scancode::Kp5 => Some(ScanCode::Numpad5),
+        Scancode::Kp6 => Some(ScanCode::Numpad6),
+        Scancode::Kp7 => Some(ScanCode::Numpad7),
+        Scancode::Kp8 => Some(ScanCode::Numpad8),
+        Scancode::Kp9 => Some(ScanCode::Numpad9),
+        Scancode::Kp0 => Some(ScanCode::Numpad0),
+        Scancode::NonUsBackslash => Some(ScanCode::NonUsBackslash),
+        Scancode::Application => Some(ScanCode::Apps),
+        Scancode::Power => Some(ScanCode::Power),
+        Scancode::KpEquals => Some(ScanCode::NumpadEquals),
+        Scancode::F13 => Some(ScanCode::F13),
+        Scancode::F14 => Some(ScanCode::F14),
+        Scancode::F15 => Some(ScanCode::F15),
+        Scancode::F16 => Some(ScanCode::F16),
+        Scancode::F17 => Some(ScanCode::F17),
+        Scancode::F18 => Some(ScanCode::F18),
+        Scancode::F19 => Some(ScanCode::F19),
+        Scancode::F20 => Some(ScanCode::F20),
+        Scancode::F21 => Some(ScanCode::F21),
+        Scancode::F22 => Some(ScanCode::F22),
+        Scancode::F23 => Some(ScanCode::F23),
+        Scancode::F24 => Some(ScanCode::F24),
+        Scancode::Stop => Some(ScanCode::Stop),
+        Scancode::Cut => Some(ScanCode::Cut),
+        Scancode::Copy => Some(ScanCode::Copy),
+        Scancode::Paste => Some(ScanCode::Paste),
+        Scancode::Mute => Some(ScanCode::Mute),
+        Scancode::VolumeUp => Some(ScanCode::VolumeUp),
+        Scancode::VolumeDown => Some(ScanCode::VolumeDown),
+        Scancode::KpComma => Some(ScanCode::NumpadComma),
+        Scancode::SysReq => Some(ScanCode::Sysrq),
+        Scancode::Return2 => Some(ScanCode::NumpadEnter),
+        Scancode::LCtrl => Some(ScanCode::LControl),
+        Scancode::LShift => Some(ScanCode::LShift),
+        Scancode::LAlt => Some(ScanCode::LAlt),
+        Scancode::LGui => Some(ScanCode::LWin),
+        Scancode::RCtrl => Some(ScanCode::RControl),
+        Scancode::RShift => Some(ScanCode::RShift),
+        Scancode::RAlt => Some(ScanCode::RAlt),
+        Scancode::RGui => Some(ScanCode::RWin),
+        Scancode::AudioNext => Some(ScanCode::NextTrack),
+        Scancode::AudioPrev => Some(ScanCode::PrevTrack),
+        Scancode::AudioStop => Some(ScanCode::MediaStop),
+        Scancode::AudioPlay => Some(ScanCode::PlayPause),
+        Scancode::AudioMute => Some(ScanCode::Mute),
+        Scancode::MediaSelect => Some(ScanCode::MediaSelect),
+        Scancode::Mail => Some(ScanCode::Mail),
+        Scancode::Calculator => Some(ScanCode::Calculator),
+        Scancode::Sleep => Some(ScanCode::Sleep),
+        _ => None,
+    }
+}

src/framework/context.rs

@@ -1,18 +1,33 @@
+use crate::framework::backend::{Backend, init_backend, BackendRenderer};
+use crate::framework::error::GameResult;
 use crate::framework::filesystem::Filesystem;
 use crate::Game;
+use crate::framework::keyboard::KeyboardContext;
 
 pub struct Context {
     pub(crate) filesystem: Filesystem,
+    pub(crate) renderer: Option<Box<dyn BackendRenderer>>,
+    pub(crate) keyboard_context: KeyboardContext,
+    pub(crate) screen_size: (f32, f32),
 }
 
 impl Context {
     pub fn new() -> Context {
         Context {
             filesystem: Filesystem::new(),
+            renderer: None,
+            keyboard_context: KeyboardContext::new(),
+            screen_size: (320.0, 240.0),
         }
     }
 
-    pub fn run(&mut self, game: &mut Game) {
-        loop {}
+    pub fn run(&mut self, game: &mut Game) -> GameResult {
+        let backend = init_backend()?;
+        let mut event_loop = backend.create_event_loop()?;
+        self.renderer = Some(event_loop.new_renderer()?);
+
+        event_loop.run(game, self);
+
+        Ok(())
     }
-}
+}

src/framework/error.rs

@@ -64,9 +64,7 @@ impl fmt::Display for GameError {
 impl Error for GameError {
     fn cause(&self) -> Option<&dyn Error> {
         match *self {
-            GameError::WindowCreationError(ref e) => Some(&**e),
             GameError::IOError(ref e) => Some(&**e),
-            GameError::ShaderProgramError(ref e) => Some(e),
             _ => None,
         }
     }

src/framework/filesystem.rs

@@ -241,6 +241,11 @@ impl Filesystem {
     pub fn mount_vfs(&mut self, vfs: Box<dyn vfs::VFS>) {
         self.vfs.push_back(vfs);
     }
+
+
+    pub fn mount_user_vfs(&mut self, vfs: Box<dyn vfs::VFS>) {
+        self.user_vfs.push_back(vfs);
+    }
 }
 
 /// Opens the given path and returns the resulting `File`
@@ -340,22 +345,6 @@ pub fn read_dir<P: AsRef<path::Path>>(
     ctx.filesystem.read_dir(path)
 }
 
-/// Prints the contents of all data directories.
-/// Useful for debugging.
-pub fn print_all(ctx: &mut Context) {
-    ctx.filesystem.print_all()
-}
-
-/// Outputs the contents of all data directories,
-/// using the "info" log level of the `log` crate.
-/// Useful for debugging.
-///
-/// See the [`logging` example](https://github.com/ggez/ggez/blob/master/examples/eventloop.rs)
-/// for how to collect log information.
-pub fn log_all(ctx: &mut Context) {
-    ctx.filesystem.log_all()
-}
-
 /// Adds the given (absolute) path to the list of directories
 /// it will search to look for resources.
 ///
@@ -370,4 +359,9 @@ pub fn mount(ctx: &mut Context, path: &path::Path, readonly: bool) {
 /// Adds a VFS to the list of resource search locations.
 pub fn mount_vfs(ctx: &mut Context, vfs: Box<dyn vfs::VFS>) {
     ctx.filesystem.mount_vfs(vfs)
-}
+}
+
+/// Adds a VFS to the list of user data search locations.
+pub fn mount_user_vfs(ctx: &mut Context, vfs: Box<dyn vfs::VFS>) {
+    ctx.filesystem.mount_user_vfs(vfs)
+}

src/framework/graphics.rs

@@ -1,6 +1,7 @@
 use crate::common::Color;
 use crate::framework::context::Context;
-use crate::framework::error::GameResult;
+use crate::framework::error::{GameResult, GameError};
+use crate::framework::backend::BackendTexture;
 
 pub enum FilterMode {
     Nearest,
@@ -13,12 +14,32 @@ impl Canvas {
 
 }
 
-pub fn clear(ctx: &mut Context, color: Color) {}
+pub fn clear(ctx: &mut Context, color: Color) {
+    if let Some(renderer) = ctx.renderer.as_mut() {
+        renderer.clear(color)
+    }
+}
+
+pub fn present(ctx: &mut Context) -> GameResult {
+    if let Some(renderer) = ctx.renderer.as_mut() {
+        renderer.present()?;
+    }
 
-pub fn present(ctx: &mut Context) -> GameResult<()> {
     Ok(())
 }
 
-pub fn drawable_size(ctx: &mut Context) -> (f32, f32) {
-    (320.0, 240.0)
-}
+pub fn renderer_initialized(ctx: &mut Context) -> bool {
+    ctx.renderer.is_some()
+}
+
+pub fn create_texture(ctx: &mut Context, width: u16, height: u16, data: &[u8]) -> GameResult<Box<dyn BackendTexture>> {
+    if let Some(renderer) = ctx.renderer.as_mut() {
+        return renderer.create_texture(width, height, data);
+    }
+
+    Err(GameError::RenderError("Rendering backend hasn't been initialized yet.".to_string()))
+}
+
+pub fn screen_size(ctx: &mut Context) -> (f32, f32) {
+    ctx.screen_size
+}

src/framework/image.rs

@@ -1,15 +0,0 @@
-use crate::framework::context::Context;
-use crate::framework::error::GameResult;
-
-pub struct Image {}
-
-impl Image {
-    pub fn from_rgba8(
-        context: &mut Context,
-        width: u16,
-        height: u16,
-        rgba: &[u8],
-    ) -> GameResult<Self> {
-        Ok(Image {})
-    }
-}

src/framework/keyboard.rs

@@ -1,6 +1,12 @@
+use std::collections::HashSet;
+
+use serde::{Deserialize, Serialize};
+
+use crate::bitfield;
 use crate::framework::context::Context;
 
 #[derive(Debug, Hash, Ord, PartialOrd, PartialEq, Eq, Clone, Copy)]
+#[derive(Serialize, Deserialize)]
 #[repr(u32)]
 pub enum ScanCode {
     /// The '1' key over the letters.
@@ -109,6 +115,8 @@ pub enum ScanCode {
     /// The "Compose" key on Linux.
     Compose,
 
+    NonUsHash,
+    NonUsBackslash,
     Caret,
 
     Numlock,
@@ -141,6 +149,7 @@ pub enum ScanCode {
     Backslash,
     Calculator,
     Capital,
+    Capslock,
     Colon,
     Comma,
     Convert,
@@ -176,6 +185,7 @@ pub enum ScanCode {
     RControl,
     RShift,
     RWin,
+    Scrolllock,
     Semicolon,
     Slash,
     Sleep,
@@ -200,6 +210,136 @@ pub enum ScanCode {
     Cut,
 }
 
-pub fn is_key_pressed(ctx: &mut Context, code: ScanCode) -> bool {
-    false
-}
+bitfield! {
+    /// Bitflags describing the state of keyboard modifiers, such as `Control` or `Shift`.
+    #[derive(Debug, Copy, Clone)]
+    pub struct KeyMods(u8);
+
+    /// No modifiers; equivalent to `KeyMods::default()` and
+    /// [`KeyMods::empty()`](struct.KeyMods.html#method.empty).
+    /// Left or right Shift key.
+    pub shift, set_shift: 0;
+    /// Left or right Control key.
+    pub ctrl, set_ctrl: 1;
+    /// Left or right Alt key.
+    pub alt, set_alt: 2;
+    /// Left or right Win/Cmd/equivalent key.
+    pub win, set_win: 3;
+}
+
+#[derive(Clone, Debug)]
+pub struct KeyboardContext {
+    active_modifiers: KeyMods,
+    pressed_keys_set: HashSet<ScanCode>,
+    last_pressed: Option<ScanCode>,
+    current_pressed: Option<ScanCode>,
+}
+
+impl KeyboardContext {
+    pub(crate) fn new() -> Self {
+        Self {
+            active_modifiers: KeyMods(0),
+            pressed_keys_set: HashSet::with_capacity(256),
+            last_pressed: None,
+            current_pressed: None,
+        }
+    }
+
+    pub(crate) fn set_key(&mut self, key: ScanCode, pressed: bool) {
+        if pressed {
+            let _ = self.pressed_keys_set.insert(key);
+            self.last_pressed = self.current_pressed;
+            self.current_pressed = Some(key);
+        } else {
+            let _ = self.pressed_keys_set.remove(&key);
+            self.current_pressed = None;
+        }
+
+        self.set_key_modifier(key, pressed);
+    }
+
+    /// Take a modifier key code and alter our state.
+    ///
+    /// Double check that this edge handling is necessary;
+    /// winit sounds like it should do this for us,
+    /// see https://docs.rs/winit/0.18.0/winit/struct.KeyboardInput.html#structfield.modifiers
+    ///
+    /// ...more specifically, we should refactor all this to consistant-ify events a bit and
+    /// make winit do more of the work.
+    /// But to quote Scott Pilgrim, "This is... this is... Booooooring."
+    fn set_key_modifier(&mut self, key: ScanCode, pressed: bool) {
+        if pressed {
+            match key {
+                ScanCode::LShift | ScanCode::RShift => self.active_modifiers.set_shift(true),
+                ScanCode::LControl | ScanCode::RControl => self.active_modifiers.set_ctrl(true),
+                ScanCode::LAlt | ScanCode::RAlt => self.active_modifiers.set_alt(true),
+                ScanCode::LWin | ScanCode::RWin => self.active_modifiers.set_win(true),
+                _ => (),
+            }
+        } else {
+            match key {
+                ScanCode::LShift | ScanCode::RShift => self.active_modifiers.set_shift(false),
+                ScanCode::LControl | ScanCode::RControl => self.active_modifiers.set_ctrl(false),
+                ScanCode::LAlt | ScanCode::RAlt => self.active_modifiers.set_alt(false),
+                ScanCode::LWin | ScanCode::RWin => self.active_modifiers.set_win(false),
+                _ => (),
+            }
+        }
+    }
+
+    pub(crate) fn set_modifiers(&mut self, keymods: KeyMods) {
+        self.active_modifiers = keymods;
+    }
+
+    pub(crate) fn is_key_pressed(&self, key: ScanCode) -> bool {
+        self.pressed_keys_set.contains(&key)
+    }
+
+    pub(crate) fn is_key_repeated(&self) -> bool {
+        if self.last_pressed.is_some() {
+            self.last_pressed == self.current_pressed
+        } else {
+            false
+        }
+    }
+
+    pub(crate) fn pressed_keys(&self) -> &HashSet<ScanCode> {
+        &self.pressed_keys_set
+    }
+
+    pub(crate) fn active_mods(&self) -> KeyMods {
+        self.active_modifiers
+    }
+}
+
+impl Default for KeyboardContext {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+/// Checks if a key is currently pressed down.
+pub fn is_key_pressed(ctx: &Context, key: ScanCode) -> bool {
+    ctx.keyboard_context.is_key_pressed(key)
+}
+
+/// Checks if the last keystroke sent by the system is repeated,
+/// like when a key is held down for a period of time.
+pub fn is_key_repeated(ctx: &Context) -> bool {
+    ctx.keyboard_context.is_key_repeated()
+}
+
+/// Returns a reference to the set of currently pressed keys.
+pub fn pressed_keys(ctx: &Context) -> &HashSet<ScanCode> {
+    ctx.keyboard_context.pressed_keys()
+}
+
+/// Checks if keyboard modifier (or several) is active.
+pub fn is_mod_active(ctx: &Context, keymods: KeyMods) -> bool {
+    (ctx.keyboard_context.active_mods().0 & keymods.0) != 0
+}
+
+/// Returns currently active keyboard modifiers.
+pub fn active_mods(ctx: &Context) -> KeyMods {
+    ctx.keyboard_context.active_mods()
+}

src/framework/mod.rs

@@ -4,7 +4,6 @@ pub mod context;
 pub mod error;
 pub mod filesystem;
 pub mod vfs;
-pub mod image;
 pub mod graphics;
 pub mod keyboard;
-pub mod backend_null;
+pub mod backend_null;

src/lib.rs

@@ -7,21 +7,28 @@ extern crate strum;
 #[macro_use]
 extern crate strum_macros;
 
-use std::env;
+use core::mem;
 use std::cell::UnsafeCell;
+use std::env;
+use std::path::PathBuf;
 use std::time::Instant;
 
+use directories::ProjectDirs;
 use log::*;
 use pretty_env_logger::env_logger::Env;
 
+use crate::builtin_fs::BuiltinFS;
+use crate::framework::backend::init_backend;
 use crate::framework::context::Context;
 use crate::framework::error::{GameError, GameResult};
+use crate::framework::filesystem::{mount_user_vfs, mount_vfs};
 use crate::framework::graphics;
 use crate::framework::keyboard::ScanCode;
+use crate::framework::vfs::PhysicalFS;
 use crate::scene::loading_scene::LoadingScene;
 use crate::scene::Scene;
 use crate::shared_game_state::{SharedGameState, TimingMode};
-use crate::texture_set::G_MAG;
+use crate::texture_set::{G_MAG, I_MAG};
 use crate::ui::UI;
 
 mod bmfont;
@@ -62,7 +69,7 @@ mod texture_set;
 mod ui;
 mod weapon;
 
-struct Game {
+pub struct Game {
     scene: Option<Box<dyn Scene>>,
     state: UnsafeCell<SharedGameState>,
     ui: UI,
@@ -147,7 +154,10 @@ impl Game {
                 n1 / n2
             } else { 1.0 };
         }
-        unsafe { G_MAG = if state_ref.settings.subpixel_coords { state_ref.scale } else { 1.0 } };
+        unsafe {
+            G_MAG = if state_ref.settings.subpixel_coords { state_ref.scale } else { 1.0 };
+            I_MAG = state_ref.scale;
+        }
         self.loops = 0;
 
         graphics::clear(ctx, [0.0, 0.0, 0.0, 1.0].into());
@@ -259,18 +269,35 @@ pub fn init() -> GameResult {
     pretty_env_logger::env_logger::from_env(Env::default().default_filter_or("info"))
         .init();
 
-    let mut resource_dir = env::current_exe()?;
-
-    // Ditch the filename (if any)
-    if resource_dir.file_name().is_some() {
-        let _ = resource_dir.pop();
-    }
-    resource_dir.push("data");
+    let resource_dir = if let Ok(data_dir) = env::var("CAVESTORY_DATA_DIR") {
+        PathBuf::from(data_dir)
+    } else {
+        let mut resource_dir = env::current_exe()?;
+        if resource_dir.file_name().is_some() {
+            let _ = resource_dir.pop();
+        }
+        resource_dir.push("data");
+        resource_dir
+    };
 
     info!("Resource directory: {:?}", resource_dir);
     info!("Initializing engine...");
 
-    let mut context: Context = Context::new();
+    let mut context = Context::new();
+    mount_vfs(&mut context, Box::new(BuiltinFS::new()));
+    mount_vfs(&mut context, Box::new(PhysicalFS::new(&resource_dir, true)));
+
+
+    #[cfg(not(target_os = "android"))]
+        let project_dirs = match ProjectDirs::from("", "", "doukutsu-rs") {
+        Some(dirs) => dirs,
+        None => {
+            return Err(GameError::FilesystemError(String::from(
+                "No valid home directory path could be retrieved.",
+            )));
+        }
+    };
+    mount_user_vfs(&mut context, Box::new(PhysicalFS::new(project_dirs.data_local_dir(), false)));
 
     #[cfg(target_os = "android")]
         {
@@ -284,4 +311,39 @@ pub fn init() -> GameResult {
                 }
             }
         }
+
+    let mut game = Game::new(&mut context)?;
+    let state_ref = unsafe { &mut *game.state.get() };
+    #[cfg(feature = "scripting")]
+        {
+            unsafe {
+                state_ref.lua.update_refs(game.state.get(), &mut context as *mut Context);
+            }
+        }
+
+    state_ref.next_scene = Some(Box::new(LoadingScene::new()));
+    context.run(&mut game);
+
+    /*    loop {
+            game.update(&mut context)?;
+
+            if state_ref.shutdown {
+                log::info!("Shutting down...");
+                break;
+            }
+
+            if state_ref.next_scene.is_some() {
+                mem::swap(&mut game.scene, &mut state_ref.next_scene);
+                state_ref.next_scene = None;
+
+                game.scene.as_mut().unwrap().init(state_ref, &mut context).unwrap();
+                game.loops = 0;
+                state_ref.frame_time = 0.0;
+            }
+
+            std::thread::sleep(std::time::Duration::from_millis(10));
+            game.draw(&mut context)?;
+        }*/
+
+    Ok(())
 }

src/scene/game_scene.rs

@@ -298,10 +298,10 @@ impl GameScene {
                         let mut frame = tick;
 
                         for x in (0..(state.canvas_size.0 as i32 + 16)).step_by(16) {
-                            if frame > 15 { frame = 15; } else { frame += 1; }
+                            if frame >= 15 { frame = 15; } else { frame += 1; }
 
                             if frame >= 0 {
-                                rect.left = frame as u16 * 16;
+                                rect.left = frame.abs() as u16 * 16;
                                 rect.right = rect.left + 16;
 
                                 for y in (0..(state.canvas_size.1 as i32 + 16)).step_by(16) {
@@ -318,10 +318,10 @@ impl GameScene {
                         let mut frame = tick;
 
                         for y in (0..(state.canvas_size.1 as i32 + 16)).step_by(16) {
-                            if frame > 15 { frame = 15; } else { frame += 1; }
+                            if frame >= 15 { frame = 15; } else { frame += 1; }
 
                             if frame >= 0 {
-                                rect.left = frame as u16 * 16;
+                                rect.left = frame.abs() as u16 * 16;
                                 rect.right = rect.left + 16;
 
                                 for x in (0..(state.canvas_size.0 as i32 + 16)).step_by(16) {
@@ -339,20 +339,20 @@ impl GameScene {
                         let center_y = (state.canvas_size.1 / 2.0 - 8.0) as i32;
                         let mut start_frame = tick;
 
-                        for x in (0..(center_x + 16)).step_by(16) {
+                        for x in 0..(center_x / 16 + 2) {
                             let mut frame = start_frame;
 
-                            for y in (0..(center_y + 16)).step_by(16) {
-                                if frame > 15 { frame = 15; } else { frame += 1; }
+                            for y in 0..(center_y / 16 + 1) {
+                                if frame >= 15 { frame = 15; } else { frame += 1; }
 
                                 if frame >= 0 {
-                                    rect.left = frame as u16 * 16;
+                                    rect.left = frame.abs() as u16 * 16;
                                     rect.right = rect.left + 16;
 
-                                    batch.add_rect((center_x - x) as f32, (center_y + y) as f32, &rect);
-                                    batch.add_rect((center_x - x) as f32, (center_y - y) as f32, &rect);
-                                    batch.add_rect((center_x + x) as f32, (center_y + y) as f32, &rect);
-                                    batch.add_rect((center_x + x) as f32, (center_y - y) as f32, &rect);
+                                    batch.add_rect((center_x - x * 16) as f32, (center_y + y * 16) as f32, &rect);
+                                    batch.add_rect((center_x - x * 16) as f32, (center_y - y * 16) as f32, &rect);
+                                    batch.add_rect((center_x + x * 16) as f32, (center_y + y * 16) as f32, &rect);
+                                    batch.add_rect((center_x + x * 16) as f32, (center_y - y * 16) as f32, &rect);
                                 }
                             }
 
@@ -1213,13 +1213,13 @@ impl Scene for GameScene {
         //graphics::set_canvas(ctx, Some(&state.game_canvas));
         self.draw_background(state, ctx)?;
         self.draw_tiles(state, ctx, TileLayer::Background)?;
-        if state.settings.shader_effects
+        /*if state.settings.shader_effects
             && self.stage.data.background_type != BackgroundType::Black
             && self.stage.data.background_type != BackgroundType::Outside
             && self.stage.data.background_type != BackgroundType::OutsideWind
             && self.stage.data.background.name() != "bkBlack" {
             self.draw_light_map(state, ctx)?;
-        }
+        }*/
 
         self.boss.draw(state, ctx, &self.frame)?;
         for npc in self.npc_list.iter_alive() {
@@ -1242,11 +1242,11 @@ impl Scene for GameScene {
         self.draw_tiles(state, ctx, TileLayer::Foreground)?;
         self.draw_tiles(state, ctx, TileLayer::Snack)?;
         self.draw_carets(state, ctx)?;
-        if state.settings.shader_effects
+        /*if state.settings.shader_effects
             && (self.stage.data.background_type == BackgroundType::Black
             || self.stage.data.background.name() == "bkBlack") {
             self.draw_light_map(state, ctx)?;
-        }
+        }*/
 
         /*graphics::set_canvas(ctx, None);
         state.game_canvas.draw(ctx, DrawParam::new()

src/shared_game_state.rs

@@ -119,11 +119,6 @@ pub struct SharedGameState {
 
 impl SharedGameState {
     pub fn new(ctx: &mut Context) -> GameResult<SharedGameState> {
-        let screen_size = (320.0, 240.0);
-        let scale = *screen_size.1.div(230.0).floor().max(&1.0);
-
-        let canvas_size = (screen_size.0 / scale, screen_size.1 / scale);
-
         let mut constants = EngineConstants::defaults();
         let mut base_path = "/";
         let settings = Settings::load(ctx)?;
@@ -170,9 +165,9 @@ impl SharedGameState {
             npc_super_pos: (0, 0),
             stages: Vec::with_capacity(96),
             frame_time: 0.0,
-            scale,
-            screen_size,
-            canvas_size,
+            scale: 2.0,
+            screen_size: (640.0, 480.0),
+            canvas_size: (320.0, 240.0),
             next_scene: None,
             textscript_vm: TextScriptVM::new(),
             season,
@@ -280,12 +275,10 @@ impl SharedGameState {
     }
 
     pub fn handle_resize(&mut self, ctx: &mut Context) -> GameResult {
-        self.screen_size = graphics::drawable_size(ctx);
+        self.screen_size = graphics::screen_size(ctx);
         self.scale = self.screen_size.1.div(230.0).floor().max(1.0);
         self.canvas_size = (self.screen_size.0 / self.scale, self.screen_size.1 / self.scale);
 
-        //graphics::set_screen_coordinates(ctx, graphics::Rect::new(0.0, 0.0, self.screen_size.0, self.screen_size.1))?;
-
         Ok(())
     }
 

src/text_script.rs

@@ -9,8 +9,6 @@ use std::ops::Not;
 use std::str::FromStr;
 
 use byteorder::ReadBytesExt;
-
-
 use itertools::Itertools;
 use num_derive::FromPrimitive;
 use num_traits::{clamp, FromPrimitive};
@@ -21,6 +19,9 @@ use crate::encoding::{read_cur_shift_jis, read_cur_wtf8};
 use crate::engine_constants::EngineConstants;
 use crate::entity::GameEntity;
 use crate::frame::UpdateTarget;
+use crate::framework::context::Context;
+use crate::framework::error::GameError::{InvalidValue, ParseError};
+use crate::framework::error::GameResult;
 use crate::npc::NPC;
 use crate::player::{ControlMode, TargetPlayer};
 use crate::scene::game_scene::GameScene;
@@ -28,7 +29,6 @@ use crate::scene::title_scene::TitleScene;
 use crate::shared_game_state::SharedGameState;
 use crate::str;
 use crate::weapon::WeaponType;
-use crate::framework::error::GameError::ParseError;
 
 /// Engine's text script VM operation codes.
 #[derive(EnumString, Debug, FromPrimitive, PartialEq)]

src/texture_set.rs

@@ -6,19 +6,22 @@ use itertools::Itertools;
 use log::info;
 
 use crate::common;
-use crate::common::FILE_TYPES;
+use crate::common::{FILE_TYPES, Point, Rect};
 use crate::engine_constants::EngineConstants;
+use crate::framework::backend::{BackendTexture, SpriteBatchCommand};
 use crate::framework::context::Context;
 use crate::framework::error::{GameError, GameResult};
 use crate::framework::filesystem;
-use crate::framework::image::Image;
+use crate::framework::graphics::{create_texture, FilterMode};
 use crate::settings::Settings;
 use crate::shared_game_state::Season;
 use crate::str;
 
+pub static mut I_MAG: f32 = 1.0;
 pub static mut G_MAG: f32 = 1.0;
 
 pub struct SizedBatch {
+    batch: Box<dyn BackendTexture>,
     width: usize,
     height: usize,
     real_width: usize,
@@ -60,15 +63,30 @@ impl SizedBatch {
 
     #[inline(always)]
     pub fn clear(&mut self) {
-        /*self.batch.clear();*/
+        self.batch.clear();
     }
 
-    pub fn add(&mut self, x: f32, y: f32) {
-        /*let param = DrawParam::new()
-            .dest(Point2::new(x, y))
-            .scale(Vector2::new(self.scale_x, self.scale_y));
+    pub fn add(&mut self, mut x: f32, mut y: f32) {
+        unsafe {
+            x = (x * G_MAG).floor() / G_MAG;
+            y = (y * G_MAG).floor() / G_MAG;
+        }
+        let mag = unsafe { I_MAG };
 
-        self.batch.add(param);*/
+        self.batch.add(SpriteBatchCommand::DrawRect(
+            Rect {
+                left: 0 as f32,
+                top: 0 as f32,
+                right: self.real_width as f32,
+                bottom: self.real_height as f32,
+            },
+            Rect {
+                left: x * mag,
+                top: y * mag,
+                right: (x + self.width() as f32) * mag,
+                bottom: (y + self.height() as f32) * mag,
+            },
+        ));
     }
 
     #[inline(always)]
@@ -81,7 +99,7 @@ impl SizedBatch {
         self.add_rect_scaled_tinted(x, y, color, self.scale_x, self.scale_y, rect)
     }
 
-    pub fn add_rect_scaled(&mut self, mut x: f32, mut y: f32, scale_x: f32, scale_y: f32, rect: &common::Rect<u16>) {
+    pub fn add_rect_scaled(&mut self, mut x: f32, mut y: f32, mut scale_x: f32, mut scale_y: f32, rect: &common::Rect<u16>) {
         if (rect.right - rect.left) == 0 || (rect.bottom - rect.top) == 0 {
             return;
         }
@@ -90,45 +108,61 @@ impl SizedBatch {
             x = (x * G_MAG).floor() / G_MAG;
             y = (y * G_MAG).floor() / G_MAG;
         }
+        let mag = unsafe { I_MAG };
 
-        /*let param = DrawParam::new()
-            .src(Rect::new(rect.left as f32 / self.width as f32,
-                           rect.top as f32 / self.height as f32,
-                           (rect.right - rect.left) as f32 / self.width as f32,
-                           (rect.bottom - rect.top) as f32 / self.height as f32))
-            .dest(mint::Point2 { x, y })
-            .scale(Vector2::new(scale_x, scale_y));
-
-        self.batch.add(param);*/
+        self.batch.add(SpriteBatchCommand::DrawRect(
+            Rect {
+                left: rect.left as f32 / scale_x,
+                top: rect.top as f32 / scale_y,
+                right: rect.right as f32 / scale_x,
+                bottom: rect.bottom as f32 / scale_y,
+            },
+            Rect {
+                left: x * mag,
+                top: y * mag,
+                right: (x + rect.width() as f32) * mag,
+                bottom: (y + rect.height() as f32) * mag,
+            },
+        ));
     }
 
-    pub fn add_rect_scaled_tinted(&mut self, x: f32, y: f32, color: (u8, u8, u8, u8), scale_x: f32, scale_y: f32, rect: &common::Rect<u16>) {
+    pub fn add_rect_scaled_tinted(&mut self, mut x: f32, mut y: f32, color: (u8, u8, u8, u8), mut scale_x: f32, mut scale_y: f32, rect: &common::Rect<u16>) {
         if (rect.right - rect.left) == 0 || (rect.bottom - rect.top) == 0 {
             return;
         }
 
-        /*let param = DrawParam::new()
-            .color(color.into())
-            .src(Rect::new(rect.left as f32 / self.width as f32,
-                           rect.top as f32 / self.height as f32,
-                           (rect.right - rect.left) as f32 / self.width as f32,
-                           (rect.bottom - rect.top) as f32 / self.height as f32))
-            .dest(mint::Point2 { x, y })
-            .scale(Vector2::new(scale_x, scale_y));
+        unsafe {
+            x = (x * G_MAG).floor() / G_MAG;
+            y = (y * G_MAG).floor() / G_MAG;
+        }
+        let mag = unsafe { I_MAG };
 
-        self.batch.add(param);*/
+        self.batch.add(SpriteBatchCommand::DrawRectTinted(
+            Rect {
+                left: rect.left as f32 / scale_x,
+                top: rect.top as f32 / scale_y,
+                right: rect.right as f32 / scale_x,
+                bottom: rect.bottom as f32 / scale_y,
+            },
+            Rect {
+                left: x * mag,
+                top: y * mag,
+                right: (x + rect.width() as f32) * mag,
+                bottom: (y + rect.height() as f32) * mag,
+            },
+            color.into(),
+        ));
     }
 
     #[inline(always)]
     pub fn draw(&mut self, ctx: &mut Context) -> GameResult {
-        //self.draw_filtered(FilterMode::Nearest, ctx)
-        Ok(())
+        self.draw_filtered(FilterMode::Nearest, ctx)
     }
 
     pub fn draw_filtered(&mut self, filter: FilterMode, ctx: &mut Context) -> GameResult {
-        /*self.batch.set_filter(filter);
-        self.batch.draw(ctx, DrawParam::new())?;
-        self.batch.clear();*/
+        ///self.batch.set_filter(filter);
+        self.batch.draw()?;
+        self.batch.clear();
         Ok(())
     }
 }
@@ -166,7 +200,7 @@ impl TextureSet {
         }
     }
 
-    fn load_image(&self, ctx: &mut Context, path: &str) -> GameResult<Image> {
+    fn load_image(&self, ctx: &mut Context, path: &str) -> GameResult<Box<dyn BackendTexture>> {
         let img = {
             let mut buf = [0u8; 8];
             let mut reader = filesystem::open(ctx, path)?;
@@ -182,7 +216,7 @@ impl TextureSet {
         };
         let (width, height) = img.dimensions();
 
-        Image::from_rgba8(ctx, width as u16, height as u16, img.as_ref())
+        create_texture(ctx, width as u16, height as u16, &img)
     }
 
     pub fn load_texture(&self, ctx: &mut Context, constants: &EngineConstants, name: &str) -> GameResult<SizedBatch> {
@@ -197,26 +231,26 @@ impl TextureSet {
 
         info!("Loading texture: {}", path);
 
-        let image = self.load_image(ctx, &path)?;
-        let size = image.dimensions();
+        let batch = self.load_image(ctx, &path)?;
+        let size = batch.dimensions();
 
-        assert_ne!(size.w as isize, 0, "size.w == 0");
-        assert_ne!(size.h as isize, 0, "size.h == 0");
+        assert_ne!(size.0 as isize, 0, "size.width == 0");
+        assert_ne!(size.1 as isize, 0, "size.height == 0");
 
-        let dim = (size.w as usize, size.h as usize);
-        let orig_dimensions = constants.tex_sizes.get(name).unwrap_or_else(|| &dim);
-        let scale_x = orig_dimensions.0 as f32 / size.w;
-        let scale_y = orig_dimensions.0 as f32 / size.w;
-        let width = (size.w * scale_x) as usize;
-        let height = (size.h * scale_y) as usize;
+        let orig_dimensions = constants.tex_sizes.get(name).unwrap_or_else(|| &size);
+        let scale = orig_dimensions.0 as f32 / size.0 as f32;
+        let width = (size.0 as f32 * scale) as usize;
+        let height = (size.1 as f32 * scale) as usize;
+        println!("{} {} {} {}", size.0, size.1, width, height);
 
         Ok(SizedBatch {
+            batch,
             width,
             height,
-            scale_x,
-            scale_y,
-            real_width: size.w as usize,
-            real_height: size.h as usize,
+            scale_x: scale,
+            scale_y: scale,
+            real_width: size.0 as usize,
+            real_height: size.1 as usize,
         })
     }