editor shit

Cargo.toml

@@ -6,7 +6,6 @@ authors = ["Alula"]
 edition = "2018"
 
 [lib]
-#crate-type = ["lib", "cdylib"]
 crate-type = ["lib"]
 
 [[bin]]
@@ -57,6 +56,7 @@ case_insensitive_hashmap = "1.0.0"
 chrono = "0.4"
 cpal = { git = "https://github.com/doukutsu-rs/cpal.git", rev = "4218ff23242834d36bcdcc0c2e3883985c15b5e0" }
 directories = "3"
+downcast = "0.11"
 funty = "=1.1.0" # https://github.com/bitvecto-rs/bitvec/issues/105
 glutin = { git = "https://github.com/doukutsu-rs/glutin.git", rev = "8dd457b9adb7dbac7ade337246b6356c784272d9", optional = true, default_features = false, features = ["x11"] }
 imgui = "0.8.0"
@@ -76,7 +76,7 @@ serde = { version = "1", features = ["derive"] }
 serde_derive = "1"
 serde_cbor = { version = "0.11.2", optional = true }
 serde_json = "1.0"
-simple_logger = { version = "1.13" }
+simple_logger = { version = "1.16", features = ["colors", "threads"] }
 strum = "0.20"
 strum_macros = "0.20"
 tokio = { version = "1.12.0", features = ["net"], optional = true }

src/components/background.rs

@@ -48,12 +48,13 @@ impl Background {
             BackgroundType::TiledStatic => {
                 graphics::clear(ctx, stage.data.background_color);
 
-                let count_x = state.canvas_size.0 as usize / batch.width() + 1;
-                let count_y = state.canvas_size.1 as usize / batch.height() + 1;
+                let (bg_width, bg_height) = (batch.width() as i32, batch.height() as i32);
+                let count_x = state.canvas_size.0 as i32 / bg_width + 1;
+                let count_y = state.canvas_size.1 as i32 / bg_height + 1;
 
-                for y in 0..count_y {
-                    for x in 0..count_x {
-                        batch.add((x * batch.width()) as f32, (y * batch.height()) as f32);
+                for y in -1..count_y {
+                    for x in -1..count_x {
+                        batch.add((x * bg_width) as f32, (y * bg_height) as f32);
                     }
                 }
             }
@@ -69,12 +70,13 @@ impl Background {
                     )
                 };
 
-                let count_x = state.canvas_size.0 as usize / batch.width() + 2;
-                let count_y = state.canvas_size.1 as usize / batch.height() + 2;
+                let (bg_width, bg_height) = (batch.width() as i32, batch.height() as i32);
+                let count_x = state.canvas_size.0 as i32 / bg_width + 2;
+                let count_y = state.canvas_size.1 as i32 / bg_height + 2;
 
-                for y in 0..count_y {
-                    for x in 0..count_x {
-                        batch.add((x * batch.width()) as f32 - off_x, (y * batch.height()) as f32 - off_y);
+                for y in -1..count_y {
+                    for x in -1..count_x {
+                        batch.add((x * bg_width) as f32 - off_x, (y * bg_height) as f32 - off_y);
                     }
                 }
             }

src/editor/mod.rs

@@ -0,0 +1,285 @@
+use std::cell::RefCell;
+use std::ops::Deref;
+use std::rc::Rc;
+
+use imgui::{Image, MouseButton, Window, WindowFlags};
+
+use crate::common::{Color, Rect};
+use crate::components::background::Background;
+use crate::components::tilemap::{TileLayer, Tilemap};
+use crate::frame::Frame;
+use crate::stage::{Stage, StageTexturePaths};
+use crate::{graphics, Context, GameResult, SharedGameState, I_MAG};
+
+#[derive(Copy, Clone, Eq, PartialEq)]
+pub enum CurrentTool {
+    Move,
+    Brush,
+    Fill,
+    Rectangle,
+}
+
+pub struct EditorInstance {
+    pub stage: Stage,
+    pub stage_id: usize,
+    pub frame: Frame,
+    pub background: Background,
+    pub stage_textures: Rc<RefCell<StageTexturePaths>>,
+    pub tilemap: Tilemap,
+    pub zoom: f32,
+    pub current_tile: u8,
+    pub mouse_pos: (f32, f32),
+    pub want_capture_mouse: bool,
+}
+
+impl EditorInstance {
+    pub fn new(stage_id: usize, stage: Stage) -> EditorInstance {
+        let stage_textures = {
+            let mut textures = StageTexturePaths::new();
+            textures.update(&stage);
+            Rc::new(RefCell::new(textures))
+        };
+        let mut frame = Frame::new();
+        frame.x = -16 * 0x200;
+        frame.y = -48 * 0x200;
+
+        EditorInstance {
+            stage,
+            stage_id,
+            frame,
+            background: Background::new(),
+            stage_textures,
+            tilemap: Tilemap::new(),
+            zoom: 2.0,
+            current_tile: 0,
+            mouse_pos: (0.0, 0.0),
+            want_capture_mouse: true,
+        }
+    }
+
+    pub fn process(&mut self, state: &mut SharedGameState, ctx: &mut Context, ui: &mut imgui::Ui, tool: CurrentTool) {
+        self.frame.prev_x = self.frame.x;
+        self.frame.prev_y = self.frame.y;
+        self.mouse_pos = (ui.io().mouse_pos[0], ui.io().mouse_pos[1]);
+        self.want_capture_mouse = ui.io().want_capture_mouse;
+
+        let mut drag = false;
+
+        match tool {
+            CurrentTool::Move => {
+                if ui.io().want_capture_mouse {
+                    return;
+                }
+
+                drag |= ui.is_mouse_down(MouseButton::Left) || ui.is_mouse_down(MouseButton::Right);
+            }
+            CurrentTool::Brush => {
+                self.palette_window(state, ctx, ui);
+
+                if ui.io().want_capture_mouse {
+                    return;
+                }
+
+                drag |= ui.is_mouse_down(MouseButton::Right);
+
+                if !drag && ui.is_mouse_down(MouseButton::Left) {
+                    let tile_size = self.stage.map.tile_size.as_int();
+                    let halft = tile_size / 2;
+                    let stage_mouse_x = (self.frame.x / 0x200) + halft + (self.mouse_pos.0 / self.zoom) as i32;
+                    let stage_mouse_y = (self.frame.y / 0x200) + halft + (self.mouse_pos.1 / self.zoom) as i32;
+                    let tile_x = stage_mouse_x / tile_size;
+                    let tile_y = stage_mouse_y / tile_size;
+
+                    if tile_x >= 0
+                        && tile_y >= 0
+                        && tile_x < self.stage.map.width as i32
+                        && tile_y < self.stage.map.height as i32
+                    {
+                        self.stage.change_tile(tile_x as usize, tile_y as usize, self.current_tile);
+                    }
+                }
+            }
+            CurrentTool::Fill => {
+                self.palette_window(state, ctx, ui);
+                drag |= ui.is_mouse_down(MouseButton::Right);
+            }
+            CurrentTool::Rectangle => {
+                self.palette_window(state, ctx, ui);
+                drag |= ui.is_mouse_down(MouseButton::Right);
+            }
+        }
+
+        if drag {
+            self.frame.x -= (512.0 * ui.io().mouse_delta[0] as f32 / self.zoom) as i32;
+            self.frame.y -= (512.0 * ui.io().mouse_delta[1] as f32 / self.zoom) as i32;
+            self.frame.prev_x = self.frame.x;
+            self.frame.prev_y = self.frame.y;
+        }
+    }
+
+    fn tile_cursor(&self, state: &mut SharedGameState, ctx: &mut Context) -> GameResult {
+        if self.want_capture_mouse {
+            return Ok(());
+        }
+
+        let tile_size = self.stage.map.tile_size.as_int();
+        let halft = tile_size / 2;
+        let stage_mouse_x = (self.frame.x / 0x200) + halft + (self.mouse_pos.0 / self.zoom) as i32;
+        let stage_mouse_y = (self.frame.y / 0x200) + halft + (self.mouse_pos.1 / self.zoom) as i32;
+        let tile_x = stage_mouse_x / tile_size;
+        let tile_y = stage_mouse_y / tile_size;
+        let frame_x = self.frame.x as f32 / 512.0;
+        let frame_y = self.frame.y as f32 / 512.0;
+
+        if tile_x < 0 || tile_y < 0 || tile_x >= self.stage.map.width as i32 || tile_y >= self.stage.map.height as i32 {
+            return Ok(());
+        }
+
+        let name = &self.stage_textures.deref().borrow().tileset_fg;
+
+        if let Ok(batch) = state.texture_set.get_or_load_batch(ctx, &state.constants, name) {
+            let tile_size16 = tile_size as u16;
+            let rect = Rect::new_size(
+                (self.current_tile as u16 % 16) * tile_size16,
+                (self.current_tile as u16 / 16) * tile_size16,
+                tile_size16,
+                tile_size16,
+            );
+
+            batch.add_rect_tinted(
+                (tile_x * tile_size - halft) as f32 - frame_x,
+                (tile_y * tile_size - halft) as f32 - frame_y,
+                (255, 255, 255, 192),
+                &rect,
+            );
+
+            batch.draw(ctx)?;
+        }
+
+        Ok(())
+    }
+
+    fn palette_window(&mut self, state: &mut SharedGameState, ctx: &mut Context, ui: &imgui::Ui) {
+        Window::new("Palette")
+            .size([260.0, 260.0], imgui::Condition::Always)
+            .position(ui.io().display_size, imgui::Condition::FirstUseEver)
+            .position_pivot([1.0, 1.0])
+            .resizable(false)
+            .build(ui, || {
+                let name = &self.stage_textures.deref().borrow().tileset_fg;
+                let batch = state.texture_set.get_or_load_batch(ctx, &state.constants, name);
+
+                let pos = ui.cursor_screen_pos();
+                let tile_size = self.stage.map.tile_size.as_float();
+
+                if let Ok(batch) = batch {
+                    let (scale_x, scale_y) = batch.scale();
+                    if let Some(tex) = batch.get_texture() {
+                        let (width, height) = tex.dimensions();
+                        let (width, height) = (width as f32 / scale_x, height as f32 / scale_y);
+
+                        if let Ok(tex_id) = graphics::imgui_texture_id(ctx, tex) {
+                            Image::new(tex_id, [width, height]).build(ui);
+                        }
+
+                        ui.set_cursor_screen_pos(pos);
+                        ui.invisible_button("##tiles", [width, height]);
+                    }
+                }
+
+                let draw_list = ui.get_window_draw_list();
+                let cur_pos1 = [
+                    pos[0].floor() + tile_size * (self.current_tile % 16) as f32,
+                    pos[1].floor() + tile_size * (self.current_tile / 16) as f32,
+                ];
+                let cur_pos2 = [cur_pos1[0] + tile_size, cur_pos1[1] + tile_size];
+                draw_list.add_rect(cur_pos1, cur_pos2, [1.0, 0.0, 0.0, 1.0]).thickness(2.0).build();
+
+                if ui.is_mouse_down(MouseButton::Left) {
+                    let mouse_pos = ui.io().mouse_pos;
+                    let x = (mouse_pos[0] - pos[0]) / tile_size;
+                    let y = (mouse_pos[1] - pos[1]) / tile_size;
+
+                    if x >= 0.0 && x < 16.0 && y >= 0.0 && y < 16.0 {
+                        self.current_tile = (y as u8 * 16 + x as u8) as u8;
+                    }
+                }
+            });
+    }
+
+    pub fn draw(&self, state: &mut SharedGameState, ctx: &mut Context, tool: CurrentTool) -> GameResult {
+        let old_scale = state.scale;
+        set_scale(state, self.zoom);
+
+        let paths = self.stage_textures.deref().borrow();
+        self.background.draw(state, ctx, &self.frame, &*paths, &self.stage)?;
+
+        self.tilemap.draw(state, ctx, &self.frame, TileLayer::Background, &*paths, &self.stage)?;
+        self.tilemap.draw(state, ctx, &self.frame, TileLayer::Middleground, &*paths, &self.stage)?;
+        self.tilemap.draw(state, ctx, &self.frame, TileLayer::Foreground, &*paths, &self.stage)?;
+        self.tilemap.draw(state, ctx, &self.frame, TileLayer::Snack, &*paths, &self.stage)?;
+
+        self.draw_black_bars(state, ctx)?;
+
+        match tool {
+            CurrentTool::Move => (),
+            CurrentTool::Brush | CurrentTool::Fill | CurrentTool::Rectangle => {
+                self.tile_cursor(state, ctx)?;
+            }
+        }
+
+        set_scale(state, old_scale);
+
+        Ok(())
+    }
+
+    fn draw_black_bars(&self, state: &mut SharedGameState, ctx: &mut Context) -> GameResult {
+        let color = Color::from_rgba(0, 0, 0, 128);
+        let (x, y) = self.frame.xy_interpolated(state.frame_time);
+        let (x, y) = (x * state.scale, y * state.scale);
+        let canvas_w_scaled = state.canvas_size.0 as f32 * state.scale;
+        let canvas_h_scaled = state.canvas_size.1 as f32 * state.scale;
+        let level_width = (self.stage.map.width as f32 - 1.0) * self.stage.map.tile_size.as_float();
+        let level_height = (self.stage.map.height as f32 - 1.0) * self.stage.map.tile_size.as_float();
+        let left_side = -x;
+        let right_side = -x + level_width * state.scale;
+        let upper_side = -y;
+        let lower_side = -y + level_height * state.scale;
+
+        if left_side > 0.0 {
+            let rect = Rect::new(0, upper_side as isize, left_side as isize, lower_side as isize);
+            graphics::draw_rect(ctx, rect, color)?;
+        }
+
+        if right_side < canvas_w_scaled {
+            let rect = Rect::new(
+                right_side as isize,
+                upper_side as isize,
+                (state.canvas_size.0 * state.scale) as isize,
+                lower_side as isize,
+            );
+            graphics::draw_rect(ctx, rect, color)?;
+        }
+
+        if upper_side > 0.0 {
+            let rect = Rect::new(0, 0, canvas_w_scaled as isize, upper_side as isize);
+            graphics::draw_rect(ctx, rect, color)?;
+        }
+
+        if lower_side < canvas_h_scaled {
+            let rect = Rect::new(0, lower_side as isize, canvas_w_scaled as isize, canvas_h_scaled as isize);
+            graphics::draw_rect(ctx, rect, color)?;
+        }
+
+        Ok(())
+    }
+}
+
+fn set_scale(state: &mut SharedGameState, scale: f32) {
+    state.scale = scale;
+
+    unsafe {
+        I_MAG = state.scale;
+        state.canvas_size = (state.screen_size.0 / state.scale, state.screen_size.1 / state.scale);
+    }
+}

src/frame.rs

@@ -23,6 +23,19 @@ pub struct Frame {
 }
 
 impl Frame {
+    pub fn new() -> Frame {
+        Frame {
+            x: 0,
+            y: 0,
+            prev_x: 0,
+            prev_y: 0,
+            update_target: UpdateTarget::Player,
+            target_x: 0,
+            target_y: 0,
+            wait: 16,
+        }
+    }
+
     pub fn xy_interpolated(&self, frame_time: f64) -> (f32, f32) {
         if self.prev_x == self.x && self.prev_y == self.y {
             return (fix9_scale(self.x), fix9_scale(self.y));

src/lib.rs

@@ -32,15 +32,17 @@ mod builtin_fs;
 mod caret;
 mod common;
 mod components;
+#[cfg(feature = "editor")]
+mod editor;
 mod encoding;
 mod engine_constants;
 mod entity;
 mod frame;
 mod framework;
-mod input;
-mod inventory;
 #[cfg(feature = "hooks")]
 mod hooks;
+mod input;
+mod inventory;
 mod live_debugger;
 mod macros;
 mod map;
@@ -65,6 +67,7 @@ mod weapon;
 
 pub struct LaunchOptions {
     pub server_mode: bool,
+    pub editor: bool,
 }
 
 lazy_static! {
@@ -100,11 +103,12 @@ impl Game {
         if let Some(scene) = self.scene.as_mut() {
             let state_ref = unsafe { &mut *self.state.get() };
 
-            let speed = if state_ref.textscript_vm.mode == ScriptMode::Map && state_ref.textscript_vm.flags.cutscene_skip() {
-                4.0 * state_ref.settings.speed
-            } else {
-                1.0 * state_ref.settings.speed
-            };
+            let speed =
+                if state_ref.textscript_vm.mode == ScriptMode::Map && state_ref.textscript_vm.flags.cutscene_skip() {
+                    4.0 * state_ref.settings.speed
+                } else {
+                    1.0 * state_ref.settings.speed
+                };
 
             match state_ref.settings.timing_mode {
                 TimingMode::_50Hz | TimingMode::_60Hz => {
@@ -114,8 +118,7 @@ impl Game {
                         if (speed - 1.0).abs() < 0.01 {
                             self.next_tick += state_ref.settings.timing_mode.get_delta() as u128;
                         } else {
-                            self.next_tick +=
-                                (state_ref.settings.timing_mode.get_delta() as f64 / speed) as u128;
+                            self.next_tick += (state_ref.settings.timing_mode.get_delta() as f64 / speed) as u128;
                         }
                         self.loops += 1;
                     }
@@ -123,8 +126,8 @@ impl Game {
                     if self.loops == 10 {
                         log::warn!("Frame skip is way too high, a long system lag occurred?");
                         self.last_tick = self.start_time.elapsed().as_nanos();
-                        self.next_tick = self.last_tick
-                            + (state_ref.settings.timing_mode.get_delta() as f64 / speed) as u128;
+                        self.next_tick =
+                            self.last_tick + (state_ref.settings.timing_mode.get_delta() as f64 / speed) as u128;
                         self.loops = 0;
                     }
 
@@ -198,7 +201,11 @@ impl Game {
 }
 
 pub fn init(options: LaunchOptions) -> GameResult {
-    let _ = simple_logger::init_with_level(log::Level::Info);
+    let _ = simple_logger::SimpleLogger::new()
+        .without_timestamps()
+        .with_colors(true)
+        .with_level(log::Level::Info.to_level_filter())
+        .init();
 
     #[cfg(not(target_os = "android"))]
     let resource_dir = if let Ok(data_dir) = env::var("CAVESTORY_DATA_DIR") {
@@ -264,17 +271,17 @@ pub fn init(options: LaunchOptions) -> GameResult {
     }
 
     #[cfg(not(target_os = "android"))]
-        {
-            if let Ok(_) = crate::framework::filesystem::open(&mut context, "/.drs_localstorage") {
-                let mut user_dir = resource_dir.clone();
-                user_dir.push("_drs_profile");
+    {
+        if let Ok(_) = crate::framework::filesystem::open(&mut context, "/.drs_localstorage") {
+            let mut user_dir = resource_dir.clone();
+            user_dir.push("_drs_profile");
 
-                let _ = std::fs::create_dir_all(&user_dir);
-                mount_user_vfs(&mut context, Box::new(PhysicalFS::new(&user_dir, false)));
-            } else {
-                mount_user_vfs(&mut context, Box::new(PhysicalFS::new(project_dirs.data_local_dir(), false)));
-            }
+            let _ = std::fs::create_dir_all(&user_dir);
+            mount_user_vfs(&mut context, Box::new(PhysicalFS::new(&user_dir, false)));
+        } else {
+            mount_user_vfs(&mut context, Box::new(PhysicalFS::new(project_dirs.data_local_dir(), false)));
         }
+    }
 
     if options.server_mode {
         log::info!("Running in server mode...");

src/main.rs

@@ -5,13 +5,23 @@ use std::process::exit;
 fn main() {
     let args = std::env::args();
     let mut options = doukutsu_rs::LaunchOptions {
-        server_mode: false
+        server_mode: false,
+        editor: false,
     };
 
     for arg in args {
         if arg == "--server-mode" {
             options.server_mode = true;
         }
+
+        if arg == "--editor" {
+            options.editor = true;
+        }
+    }
+
+    if options.server_mode && options.editor {
+        eprintln!("Cannot run in server mode and editor mode at the same time.");
+        exit(1);
     }
 
     let result = doukutsu_rs::init(options);

src/map.rs

@@ -17,6 +17,7 @@ use crate::stage::{PxPackScroll, PxPackStageData, StageData};
 static SUPPORTED_PXM_VERSIONS: [u8; 1] = [0x10];
 static SUPPORTED_PXE_VERSIONS: [u8; 2] = [0, 0x10];
 
+#[derive(Clone)]
 pub struct Map {
     pub width: u16,
     pub height: u16,

src/scene/editor_scene.rs

@@ -1,19 +1,134 @@
-use imgui::MenuItem;
+use std::cell::RefCell;
+use std::rc::Rc;
 
+use downcast::Downcast;
+use imgui::{Condition, MenuItem, TabItem, TabItemFlags, Window};
+
+use crate::editor::{CurrentTool, EditorInstance};
+use crate::framework::keyboard;
+use crate::framework::keyboard::ScanCode;
 use crate::framework::ui::Components;
+use crate::scene::game_scene::GameScene;
 use crate::scene::title_scene::TitleScene;
+use crate::stage::Stage;
 use crate::{Context, GameResult, Scene, SharedGameState};
 
-pub struct EditorScene {}
+struct ErrorList {
+    errors: Vec<String>,
+}
+
+impl ErrorList {
+    fn new() -> ErrorList {
+        Self { errors: Vec::new() }
+    }
+
+    fn try_or_push_error(&mut self, func: impl FnOnce() -> GameResult<()>) {
+        if let Err(err) = func() {
+            self.errors.push(err.to_string());
+        }
+    }
+}
+
+fn catch(error_list: Rc<RefCell<ErrorList>>, func: impl FnOnce() -> GameResult<()>) {
+    error_list.borrow_mut().try_or_push_error(func);
+}
+
+pub struct EditorScene {
+    stage_list: StageListWindow,
+    error_list: Rc<RefCell<ErrorList>>,
+    instances: Vec<EditorInstance>,
+    subscene: Option<Box<GameScene>>,
+    current_tool: CurrentTool,
+    selected_instance: usize,
+    switch_tab: bool,
+}
 
 impl EditorScene {
     pub fn new() -> Self {
-        EditorScene {}
+        EditorScene {
+            stage_list: StageListWindow::new(),
+            error_list: Rc::new(RefCell::new(ErrorList::new())),
+            instances: Vec::new(),
+            subscene: None,
+            current_tool: CurrentTool::Move,
+            selected_instance: 0,
+            switch_tab: false,
+        }
     }
 
     fn exit_editor(&mut self, state: &mut SharedGameState) {
         state.next_scene = Some(Box::new(TitleScene::new()));
     }
+
+    fn open_stage(&mut self, state: &mut SharedGameState, ctx: &mut Context, stage_id: usize) {
+        catch(self.error_list.clone(), || {
+            for (idx, instance) in self.instances.iter().enumerate() {
+                if instance.stage_id == stage_id {
+                    self.selected_instance = idx;
+                    self.switch_tab = true;
+                    return Ok(());
+                }
+            }
+
+            if let Some(stage) = state.stages.get(stage_id) {
+                let stage = Stage::load(&state.base_path, stage, ctx)?;
+
+                let new_instance = EditorInstance::new(stage_id, stage);
+                self.instances.push(new_instance);
+                self.selected_instance = self.instances.len() - 1;
+                self.switch_tab = true;
+            }
+
+            Ok(())
+        });
+    }
+
+    fn test_stage(&mut self, state: &mut SharedGameState, ctx: &mut Context) {
+        catch(self.error_list.clone(), || {
+            if let Some(instance) = self.instances.get(self.selected_instance) {
+                state.reset();
+                state.textscript_vm.start_script(94);
+                let mut game_scene = GameScene::from_stage(state, ctx, instance.stage.clone(), instance.stage_id)?;
+                game_scene.init(state, ctx)?;
+                game_scene.player1.cond.set_alive(true);
+                game_scene.player1.x = instance.frame.x + (state.canvas_size.0 * 256.0) as i32;
+                game_scene.player1.y = instance.frame.y + (state.canvas_size.1 * 256.0) as i32;
+                state.control_flags.set_control_enabled(true);
+                state.control_flags.set_tick_world(true);
+                state.textscript_vm.suspend = false;
+                self.subscene = Some(Box::new(game_scene));
+            }
+
+            Ok(())
+        });
+    }
+
+    fn perform_actions(&mut self, state: &mut SharedGameState, ctx: &mut Context) {
+        let actions = std::mem::take(&mut self.stage_list.actions);
+        for action in actions.iter() {
+            match action {
+                StageListAction::OpenStage(idx) => self.open_stage(state, ctx, *idx),
+            }
+        }
+    }
+}
+
+trait ExtraWidgetsExt {
+    fn tool_button(&self, label: impl AsRef<str>, active: bool) -> bool;
+}
+
+impl ExtraWidgetsExt for imgui::Ui<'_> {
+    fn tool_button(&self, label: impl AsRef<str>, active: bool) -> bool {
+        if active {
+            let color = self.style_color(imgui::StyleColor::ButtonActive);
+            let _token1 = self.push_style_color(imgui::StyleColor::Button, color);
+            let _token2 = self.push_style_color(imgui::StyleColor::ButtonHovered, color);
+            let ret = self.button(label);
+            ret
+        } else {
+            self.button(label)
+        }
+    }
 }
 
 impl Scene for EditorScene {
@@ -23,7 +138,64 @@ impl Scene for EditorScene {
         Ok(())
     }
 
-    fn draw(&self, _state: &mut SharedGameState, _ctx: &mut Context) -> GameResult {
+    fn tick(&mut self, state: &mut SharedGameState, ctx: &mut Context) -> GameResult {
+        let subscene_ref = &mut self.subscene;
+        if subscene_ref.is_some() {
+            subscene_ref.as_mut().unwrap().tick(state, ctx)?;
+
+            if keyboard::is_key_pressed(ctx, ScanCode::Escape) {
+                *subscene_ref = None;
+            }
+
+            // hijack scene switches
+            let next_scene = std::mem::take(&mut state.next_scene);
+            if let Some(next_scene) = next_scene {
+                *subscene_ref = if let Ok(game_scene) = next_scene.downcast() {
+                    let mut game_scene: Box<GameScene> = game_scene;
+                    game_scene.init(state, ctx)?;
+                    Some(game_scene)
+                } else {
+                    None
+                };
+            }
+
+            if subscene_ref.is_none() {
+                state.sound_manager.play_song(0, &state.constants, &state.settings, ctx)?;
+            }
+
+            return Ok(());
+        }
+
+        Ok(())
+    }
+
+    fn draw_tick(&mut self, state: &mut SharedGameState) -> GameResult {
+        if let Some(scene) = &mut self.subscene {
+            scene.draw_tick(state)?;
+            return Ok(());
+        }
+
+        Ok(())
+    }
+
+    fn draw(&self, state: &mut SharedGameState, ctx: &mut Context) -> GameResult {
+        if let Some(scene) = &self.subscene {
+            scene.draw(state, ctx)?;
+            state.font.draw_text(
+                "Press [ESC] to return.".chars(),
+                4.0,
+                4.0,
+                &state.constants,
+                &mut state.texture_set,
+                ctx,
+            )?;
+            return Ok(());
+        }
+
+        if let Some(instance) = self.instances.get(self.selected_instance) {
+            instance.draw(state, ctx, self.current_tool)?;
+        }
+
         Ok(())
     }
 
@@ -31,12 +203,25 @@ impl Scene for EditorScene {
         &mut self,
         _game_ui: &mut Components,
         state: &mut SharedGameState,
-        _ctx: &mut Context,
+        ctx: &mut Context,
         ui: &mut imgui::Ui,
     ) -> GameResult {
+        self.perform_actions(state, ctx);
+
+        if let Some(_) = self.subscene {
+            return Ok(());
+        }
+
+        let mut menu_bar_size = (0.0, 0.0);
         if let Some(menu_bar) = ui.begin_main_menu_bar() {
+            let [menu_bar_w, menu_bar_h] = ui.window_size();
+            menu_bar_size = (menu_bar_w, menu_bar_h);
+
             if let Some(menu) = ui.begin_menu("File") {
-                MenuItem::new("Open stage").shortcut("Ctrl+O").build(ui);
+                if MenuItem::new("Open stage").shortcut("Ctrl+O").build(ui) {
+                    self.stage_list.show();
+                }
+
                 ui.separator();
 
                 if MenuItem::new("Exit editor").build(ui) {
@@ -48,6 +233,117 @@ impl Scene for EditorScene {
             menu_bar.end();
         }
 
+        Window::new("Toolbar")
+            .title_bar(false)
+            .resizable(false)
+            .position([0.0, menu_bar_size.1], Condition::Always)
+            .size([menu_bar_size.0, 0.0], Condition::Always)
+            .build(ui, || {
+                if ui.tool_button("Move", self.current_tool == CurrentTool::Move) {
+                    self.current_tool = CurrentTool::Move;
+                }
+                ui.same_line();
+                if ui.tool_button("Brush", self.current_tool == CurrentTool::Brush) {
+                    self.current_tool = CurrentTool::Brush;
+                }
+                ui.same_line();
+                if ui.tool_button("Fill", self.current_tool == CurrentTool::Fill) {
+                    self.current_tool = CurrentTool::Fill;
+                }
+                ui.same_line();
+                if ui.tool_button("Rectangle", self.current_tool == CurrentTool::Rectangle) {
+                    self.current_tool = CurrentTool::Rectangle;
+                }
+
+                ui.same_line();
+                ui.text("|");
+
+                ui.same_line();
+                if ui.button("Test Stage") {
+                    self.test_stage(state, ctx);
+                }
+
+                if let Some(tab) = ui.tab_bar("Stages") {
+                    for (idx, inst) in self.instances.iter().enumerate() {
+                        let mut flags = TabItemFlags::NO_CLOSE_WITH_MIDDLE_MOUSE_BUTTON;
+                        if self.switch_tab && self.selected_instance == idx {
+                            self.switch_tab = false;
+                            flags |= TabItemFlags::SET_SELECTED;
+                        }
+
+                        if let Some(item) = TabItem::new(&inst.stage.data.name).flags(flags).begin(ui) {
+                            if !self.switch_tab {
+                                self.selected_instance = idx;
+                            }
+                            item.end();
+                        }
+                    }
+
+                    tab.end();
+                }
+            });
+
+        self.stage_list.action(state, ctx, ui);
+
+        if let Some(instance) = self.instances.get_mut(self.selected_instance) {
+            instance.process(state, ctx, ui, self.current_tool);
+        }
+
         Ok(())
     }
 }
+
+struct StageListWindow {
+    visible: bool,
+    selected_stage: i32,
+    actions: Vec<StageListAction>,
+}
+
+enum StageListAction {
+    OpenStage(usize),
+}
+
+impl StageListWindow {
+    fn new() -> Self {
+        StageListWindow { visible: false, selected_stage: 0, actions: Vec::new() }
+    }
+
+    fn show(&mut self) {
+        self.visible = true;
+    }
+
+    fn action(&mut self, state: &mut SharedGameState, ctx: &mut Context, ui: &mut imgui::Ui) {
+        if !self.visible {
+            return;
+        }
+
+        Window::new("Stage list")
+            .resizable(false)
+            .collapsible(false)
+            .position_pivot([0.5, 0.5])
+            .size([300.0, 352.0], Condition::FirstUseEver)
+            .build(ui, || {
+                let mut stages = Vec::with_capacity(state.stages.len());
+                for stage in state.stages.iter() {
+                    stages.push(stage.name.as_str());
+                }
+
+                ui.push_item_width(-1.0);
+                ui.list_box("", &mut self.selected_stage, &stages, 14);
+
+                ui.disabled(self.selected_stage < 0, || {
+                    if ui.button("Open") {
+                        self.actions.push(StageListAction::OpenStage(self.selected_stage as usize));
+                    }
+
+                    ui.same_line();
+                    if ui.button("Edit table entry") {}
+                });
+
+                ui.same_line();
+                if ui.button("Cancel") {
+                    self.visible = false;
+                }
+            });
+    }
+}

src/scene/game_scene.rs

@@ -5,7 +5,7 @@ use std::rc::Rc;
 use log::info;
 
 use crate::caret::CaretType;
-use crate::common::{interpolate_fix9_scale, Color, Direction, Rect};
+use crate::common::{Color, Direction, interpolate_fix9_scale, Rect};
 use crate::components::background::Background;
 use crate::components::boss_life_bar::BossLifeBar;
 use crate::components::credits::Credits;
@@ -21,30 +21,30 @@ use crate::components::tilemap::{TileLayer, Tilemap};
 use crate::components::water_renderer::WaterRenderer;
 use crate::entity::GameEntity;
 use crate::frame::{Frame, UpdateTarget};
+use crate::framework::{filesystem, graphics};
 use crate::framework::backend::SpriteBatchCommand;
 use crate::framework::context::Context;
 use crate::framework::error::GameResult;
-use crate::framework::graphics::{draw_rect, BlendMode, FilterMode};
+use crate::framework::graphics::{BlendMode, draw_rect, FilterMode};
 use crate::framework::ui::Components;
-use crate::framework::{filesystem, graphics};
 use crate::input::touch_controls::TouchControlType;
 use crate::inventory::{Inventory, TakeExperienceResult};
 use crate::map::WaterParams;
+use crate::npc::{NPC, NPCLayer};
 use crate::npc::boss::BossNPC;
 use crate::npc::list::NPCList;
-use crate::npc::{NPCLayer, NPC};
-use crate::physics::{PhysicalEntity, OFFSETS};
+use crate::physics::{OFFSETS, PhysicalEntity};
 use crate::player::{Player, TargetPlayer};
 use crate::rng::XorShift;
-use crate::scene::title_scene::TitleScene;
 use crate::scene::Scene;
+use crate::scene::title_scene::TitleScene;
 use crate::scripting::tsc::credit_script::CreditScriptVM;
 use crate::scripting::tsc::text_script::{ScriptMode, TextScriptExecutionState, TextScriptVM};
 use crate::shared_game_state::{SharedGameState, TileSize};
 use crate::stage::{BackgroundType, Stage, StageTexturePaths};
 use crate::texture_set::SpriteBatch;
-use crate::weapon::bullet::BulletManager;
 use crate::weapon::{Weapon, WeaponType};
+use crate::weapon::bullet::BulletManager;
 
 pub struct GameScene {
     pub tick: u32,
@@ -96,11 +96,16 @@ impl GameScene {
         info!("Loading stage {} ({})", id, &state.stages[id].map);
         let stage = Stage::load(&state.base_path, &state.stages[id], ctx)?;
         info!("Loaded stage: {}", stage.data.name);
+
+        GameScene::from_stage(state, ctx, stage, id)
+    }
+
+    pub fn from_stage(state: &mut SharedGameState, ctx: &mut Context, stage: Stage, id: usize) -> GameResult<Self> {
         let mut water_params = WaterParams::new();
         let mut water_renderer = WaterRenderer::new();
 
         if let Ok(water_param_file) =
-            filesystem::open(ctx, [&state.base_path, "Stage/", &state.stages[id].tileset.name, ".pxw"].join(""))
+        filesystem::open(ctx, [&state.base_path, "Stage/", &state.stages[id].tileset.name, ".pxw"].join(""))
         {
             water_params.load_from(water_param_file)?;
             info!("Loaded water parameters file.");
@@ -109,23 +114,9 @@ impl GameScene {
         }
 
         let stage_textures = {
-            let background = stage.data.background.filename();
-            let (tileset_fg, tileset_mg, tileset_bg) = if let Some(pxpack_data) = stage.data.pxpack_data.as_ref() {
-                let t_fg = ["Stage/", &pxpack_data.tileset_fg].join("");
-                let t_mg = ["Stage/", &pxpack_data.tileset_mg].join("");
-                let t_bg = ["Stage/", &pxpack_data.tileset_bg].join("");
-
-                (t_fg, t_mg, t_bg)
-            } else {
-                let tex_tileset_name = ["Stage/", &stage.data.tileset.filename()].join("");
-
-                (tex_tileset_name.clone(), tex_tileset_name.clone(), tex_tileset_name)
-            };
-
-            let npc1 = ["Npc/", &stage.data.npc1.filename()].join("");
-            let npc2 = ["Npc/", &stage.data.npc2.filename()].join("");
-
-            Rc::new(RefCell::new(StageTexturePaths { background, tileset_fg, tileset_mg, tileset_bg, npc1, npc2 }))
+            let mut textures = StageTexturePaths::new();
+            textures.update(&stage);
+            Rc::new(RefCell::new(textures))
         };
 
         Ok(Self {
@@ -149,16 +140,7 @@ impl GameScene {
             tilemap: Tilemap::new(),
             text_boxes: TextBoxes::new(),
             fade: Fade::new(),
-            frame: Frame {
-                x: 0,
-                y: 0,
-                prev_x: 0,
-                prev_y: 0,
-                update_target: UpdateTarget::Player,
-                target_x: 0,
-                target_y: 0,
-                wait: 16,
-            },
+            frame: Frame::new(),
             stage_id: id,
             npc_list: NPCList::new(),
             boss: BossNPC::new(),

src/scene/loading_scene.rs

@@ -5,9 +5,9 @@ use crate::npc::NPCTable;
 use crate::scene::no_data_scene::NoDataScene;
 use crate::scene::Scene;
 use crate::scripting::tsc::credit_script::CreditScript;
+use crate::scripting::tsc::text_script::TextScript;
 use crate::shared_game_state::SharedGameState;
 use crate::stage::StageData;
-use crate::scripting::tsc::text_script::TextScript;
 
 pub struct LoadingScene {
     tick: usize,
@@ -15,9 +15,7 @@ pub struct LoadingScene {
 
 impl LoadingScene {
     pub fn new() -> Self {
-        Self {
-            tick: 0,
-        }
+        Self { tick: 0 }
     }
 
     fn load_stuff(&mut self, state: &mut SharedGameState, ctx: &mut Context) -> GameResult {
@@ -71,8 +69,10 @@ impl Scene for LoadingScene {
     fn draw(&self, state: &mut SharedGameState, ctx: &mut Context) -> GameResult {
         match state.texture_set.get_or_load_batch(ctx, &state.constants, "Loading") {
             Ok(batch) => {
-                batch.add(((state.canvas_size.0 - batch.width() as f32) / 2.0).floor(),
-                          ((state.canvas_size.1 - batch.height() as f32) / 2.0).floor());
+                batch.add(
+                    ((state.canvas_size.0 - batch.width() as f32) / 2.0).floor(),
+                    ((state.canvas_size.1 - batch.height() as f32) / 2.0).floor(),
+                );
                 batch.draw(ctx)?;
             }
             Err(err) => {

src/scene/mod.rs

@@ -1,30 +1,48 @@
 use crate::framework::context::Context;
 use crate::framework::error::GameResult;
-
-use crate::shared_game_state::SharedGameState;
 use crate::framework::ui::Components;
+use crate::shared_game_state::SharedGameState;
 
+#[cfg(feature = "editor")]
+pub mod editor_scene;
 pub mod game_scene;
 pub mod loading_scene;
 pub mod no_data_scene;
 pub mod title_scene;
-pub mod editor_scene;
 
 /// Implement this trait on any object that represents an interactive game screen.
-pub trait Scene {
+pub trait Scene: downcast::Any {
     /// Called when the scene is shown.
-    fn init(&mut self, _state: &mut SharedGameState, _ctx: &mut Context) -> GameResult { Ok(()) }
+    fn init(&mut self, _state: &mut SharedGameState, _ctx: &mut Context) -> GameResult {
+        Ok(())
+    }
 
     /// Called at game tick. Perform any game state updates there.
-    fn tick(&mut self, _state: &mut SharedGameState, _ctx: &mut Context) -> GameResult { Ok(()) }
+    fn tick(&mut self, _state: &mut SharedGameState, _ctx: &mut Context) -> GameResult {
+        Ok(())
+    }
 
     /// Called before draws between two ticks to update previous positions used for interpolation.
     /// DO NOT perform updates of the game state there.
-    fn draw_tick(&mut self, _state: &mut SharedGameState) -> GameResult { Ok(()) }
+    fn draw_tick(&mut self, _state: &mut SharedGameState) -> GameResult {
+        Ok(())
+    }
 
     /// Called during frame rendering operation.
-    fn draw(&self, _state: &mut SharedGameState, _ctx: &mut Context) -> GameResult { Ok(()) }
+    fn draw(&self, _state: &mut SharedGameState, _ctx: &mut Context) -> GameResult {
+        Ok(())
+    }
 
     /// Independent draw meant for debug overlay, that lets you mutate the game state.
-    fn imgui_draw(&mut self, _game_ui: &mut Components, _state: &mut SharedGameState, _ctx: &mut Context, _frame: &mut imgui::Ui) -> GameResult { Ok(()) }
+    fn imgui_draw(
+        &mut self,
+        _game_ui: &mut Components,
+        _state: &mut SharedGameState,
+        _ctx: &mut Context,
+        _frame: &mut imgui::Ui,
+    ) -> GameResult {
+        Ok(())
+    }
 }
+
+downcast::impl_downcast!(dyn Scene);

src/scene/no_data_scene.rs

@@ -1,6 +1,5 @@
 use crate::framework::context::Context;
-use crate::framework::error::{GameResult, GameError};
-
+use crate::framework::error::{GameError, GameResult};
 use crate::scene::Scene;
 use crate::shared_game_state::SharedGameState;
 
@@ -27,23 +26,23 @@ impl Scene for NoDataScene {
     #[allow(unused)]
     fn tick(&mut self, state: &mut SharedGameState, ctx: &mut Context) -> GameResult {
         #[cfg(target_os = "android")]
-            {
-                use crate::common::Rect;
+        {
+            use crate::common::Rect;
 
-                if !self.flag {
-                    self.flag = true;
-                    let _ = std::fs::create_dir("/sdcard/doukutsu/");
-                    let _ = std::fs::write("/sdcard/doukutsu/extract game data here.txt", REL_URL);
-                    let _ = std::fs::write("/sdcard/doukutsu/.nomedia", b"");
-                }
+            if !self.flag {
+                self.flag = true;
+                let _ = std::fs::create_dir("/sdcard/doukutsu/");
+                let _ = std::fs::write("/sdcard/doukutsu/extract game data here.txt", REL_URL);
+                let _ = std::fs::write("/sdcard/doukutsu/.nomedia", b"");
+            }
 
-                let screen = Rect::new(0, 0, state.canvas_size.0 as isize, state.canvas_size.1 as isize);
-                if state.touch_controls.consume_click_in(screen) {
-                    if let Err(err) = webbrowser::open(REL_URL) {
-                        self.err = err.to_string();
-                    }
+            let screen = Rect::new(0, 0, state.canvas_size.0 as isize, state.canvas_size.1 as isize);
+            if state.touch_controls.consume_click_in(screen) {
+                if let Err(err) = webbrowser::open(REL_URL) {
+                    self.err = err.to_string();
                 }
             }
+        }
         Ok(())
     }
 
@@ -51,43 +50,82 @@ impl Scene for NoDataScene {
         {
             let die = "doukutsu-rs internal error";
             let die_width = state.font.text_width(die.chars().clone(), &state.constants);
-            state.font.draw_colored_text(die.chars(), (state.canvas_size.0 - die_width) / 2.0, 10.0,
-                                         (255, 100, 100, 255), &state.constants, &mut state.texture_set, ctx)?;
+            state.font.draw_colored_text(
+                die.chars(),
+                (state.canvas_size.0 - die_width) / 2.0,
+                10.0,
+                (255, 100, 100, 255),
+                &state.constants,
+                &mut state.texture_set,
+                ctx,
+            )?;
         }
 
         {
             let ftl = "Failed to load game data.";
             let ftl_width = state.font.text_width(ftl.chars().clone(), &state.constants);
-            state.font.draw_colored_text(ftl.chars(), (state.canvas_size.0 - ftl_width) / 2.0, 30.0,
-                                         (255, 100, 100, 255), &state.constants, &mut state.texture_set, ctx)?;
+            state.font.draw_colored_text(
+                ftl.chars(),
+                (state.canvas_size.0 - ftl_width) / 2.0,
+                30.0,
+                (255, 100, 100, 255),
+                &state.constants,
+                &mut state.texture_set,
+                ctx,
+            )?;
         }
 
         #[cfg(target_os = "android")]
-            {
-                let ftl = "It's likely that you haven't extracted the game data properly.";
-                let ftl2 = "Click here to open the guide.";
-                let ftl_width = state.font.text_width(ftl.chars().clone(), &state.constants);
-                let ftl2_width = state.font.text_width(ftl2.chars().clone(), &state.constants);
-                let ftl3_width = state.font.text_width(REL_URL.chars().clone(), &state.constants);
+        {
+            let ftl = "It's likely that you haven't extracted the game data properly.";
+            let ftl2 = "Click here to open the guide.";
+            let ftl_width = state.font.text_width(ftl.chars().clone(), &state.constants);
+            let ftl2_width = state.font.text_width(ftl2.chars().clone(), &state.constants);
+            let ftl3_width = state.font.text_width(REL_URL.chars().clone(), &state.constants);
 
-                state.font.draw_colored_text(ftl.chars(), (state.canvas_size.0 - ftl_width) / 2.0, 60.0,
-                                             (255, 255, 0, 255), &state.constants, &mut state.texture_set, ctx)?;
+            state.font.draw_colored_text(
+                ftl.chars(),
+                (state.canvas_size.0 - ftl_width) / 2.0,
+                60.0,
+                (255, 255, 0, 255),
+                &state.constants,
+                &mut state.texture_set,
+                ctx,
+            )?;
 
+            state.font.draw_colored_text(
+                ftl2.chars(),
+                (state.canvas_size.0 - ftl2_width) / 2.0,
+                80.0,
+                (255, 255, 0, 255),
+                &state.constants,
+                &mut state.texture_set,
+                ctx,
+            )?;
 
-                state.font.draw_colored_text(ftl2.chars(), (state.canvas_size.0 - ftl2_width) / 2.0, 80.0,
-                                             (255, 255, 0, 255), &state.constants, &mut state.texture_set, ctx)?;
-
-                state.font.draw_colored_text(REL_URL.chars(), (state.canvas_size.0 - ftl3_width) / 2.0, 100.0,
-                                             (255, 255, 0, 255), &state.constants, &mut state.texture_set, ctx)?;
-            }
+            state.font.draw_colored_text(
+                REL_URL.chars(),
+                (state.canvas_size.0 - ftl3_width) / 2.0,
+                100.0,
+                (255, 255, 0, 255),
+                &state.constants,
+                &mut state.texture_set,
+                ctx,
+            )?;
+        }
 
         {
             let err_width = state.font.text_width(self.err.chars().clone(), &state.constants);
-            state.font.draw_text(self.err.chars(), (state.canvas_size.0 - err_width) / 2.0, 140.0,
-                                 &state.constants, &mut state.texture_set, ctx)?;
+            state.font.draw_text(
+                self.err.chars(),
+                (state.canvas_size.0 - err_width) / 2.0,
+                140.0,
+                &state.constants,
+                &mut state.texture_set,
+                ctx,
+            )?;
         }
 
-
         Ok(())
     }
 }

src/scene/title_scene.rs

@@ -4,8 +4,8 @@ use crate::framework::error::GameResult;
 use crate::framework::graphics;
 use crate::input::combined_menu_controller::CombinedMenuController;
 use crate::input::touch_controls::TouchControlType;
-use crate::menu::settings_menu::SettingsMenu;
 use crate::menu::{Menu, MenuEntry, MenuSelectionResult};
+use crate::menu::settings_menu::SettingsMenu;
 use crate::scene::Scene;
 use crate::shared_game_state::SharedGameState;
 
@@ -144,10 +144,10 @@ impl Scene for TitleScene {
                 }
                 MenuSelectionResult::Selected(3, _) => {
                     #[cfg(feature = "editor")]
-                    {
-                        use crate::scene::editor_scene::EditorScene;
-                        state.next_scene = Some(Box::new(EditorScene::new()));
-                    }
+                        {
+                            use crate::scene::editor_scene::EditorScene;
+                            state.next_scene = Some(Box::new(EditorScene::new()));
+                        }
                 }
                 MenuSelectionResult::Selected(4, _) => {
                     state.shutdown();

src/stage.rs

@@ -1,8 +1,8 @@
 use std::io::{Cursor, Read};
 use std::str::from_utf8;
 
-use byteorder::LE;
 use byteorder::ReadBytesExt;
+use byteorder::LE;
 use log::info;
 
 use crate::common::Color;
@@ -511,6 +511,7 @@ impl StageData {
     }
 }
 
+#[derive(Clone)]
 pub struct Stage {
     pub map: Map,
     pub data: StageData,
@@ -609,4 +610,25 @@ impl StageTexturePaths {
             npc2: "Npc/Npc0".to_owned(),
         }
     }
+
+    pub fn update(&mut self, stage: &Stage) {
+        self.background = stage.data.background.filename();
+        let (tileset_fg, tileset_mg, tileset_bg) = if let Some(pxpack_data) = stage.data.pxpack_data.as_ref() {
+            let t_fg = ["Stage/", &pxpack_data.tileset_fg].join("");
+            let t_mg = ["Stage/", &pxpack_data.tileset_mg].join("");
+            let t_bg = ["Stage/", &pxpack_data.tileset_bg].join("");
+
+            (t_fg, t_mg, t_bg)
+        } else {
+            let tex_tileset_name = ["Stage/", &stage.data.tileset.filename()].join("");
+
+            (tex_tileset_name.clone(), tex_tileset_name.clone(), tex_tileset_name)
+        };
+        self.tileset_fg = tileset_fg;
+        self.tileset_mg = tileset_mg;
+        self.tileset_bg = tileset_bg;
+
+        self.npc1 = ["Npc/", &stage.data.npc1.filename()].join("");
+        self.npc2 = ["Npc/", &stage.data.npc2.filename()].join("");
+    }
 }

src/texture_set.rs

@@ -69,6 +69,8 @@ pub trait SpriteBatch {
     fn draw(&mut self, ctx: &mut Context) -> GameResult;
 
     fn draw_filtered(&mut self, _filter: FilterMode, _ctx: &mut Context) -> GameResult;
+
+    fn get_texture(&self) -> Option<&Box<dyn BackendTexture>>;
 }
 
 pub struct DummyBatch;
@@ -136,6 +138,10 @@ impl SpriteBatch for DummyBatch {
     fn draw_filtered(&mut self, _filter: FilterMode, _ctx: &mut Context) -> GameResult {
         Ok(())
     }
+
+    fn get_texture(&self) -> Option<&Box<dyn BackendTexture>> {
+        None
+    }
 }
 
 pub struct SubBatch {
@@ -309,6 +315,10 @@ impl SpriteBatch for SubBatch {
         self.batch.clear();
         Ok(())
     }
+
+    fn get_texture(&self) -> Option<&Box<dyn BackendTexture>> {
+        Some(&self.batch)
+    }
 }
 
 impl SpriteBatch for CombinedBatch {
@@ -395,6 +405,10 @@ impl SpriteBatch for CombinedBatch {
     fn draw_filtered(&mut self, filter: FilterMode, ctx: &mut Context) -> GameResult {
         self.main_batch.draw_filtered(filter, ctx)
     }
+
+    fn get_texture(&self) -> Option<&Box<dyn BackendTexture>> {
+        self.main_batch.get_texture()
+    }
 }
 
 pub struct TextureSet {