src/app.rs

@@ -23,7 +23,7 @@ use crate::{
     vram::VramProcessor,
     window::{
         AboutWindow, AppWindow, BgMapWindow, CharacterDataWindow, GameWindow, GdbServerWindow,
-        InputWindow,
+        InputWindow, ObjectWindow,
     },
 };
 
@@ -221,6 +221,10 @@ impl ApplicationHandler<UserEvent> for Application {
                 let bgmap = BgMapWindow::new(sim_id, &mut self.memory, &mut self.vram);
                 self.open(event_loop, Box::new(bgmap));
             }
+            UserEvent::OpenObjects(sim_id) => {
+                let objects = ObjectWindow::new(sim_id, &mut self.memory, &mut self.vram);
+                self.open(event_loop, Box::new(objects));
+            }
             UserEvent::OpenDebugger(sim_id) => {
                 let debugger =
                     GdbServerWindow::new(sim_id, self.client.clone(), self.proxy.clone());
@@ -481,6 +485,7 @@ pub enum UserEvent {
     OpenAbout,
     OpenCharacterData(SimId),
     OpenBgMap(SimId),
+    OpenObjects(SimId),
     OpenDebugger(SimId),
     OpenInput,
     OpenPlayer2,

src/vram.rs

@@ -101,34 +101,43 @@ impl VramProcessorWorker {
 
 pub struct VramImage {
     size: [usize; 2],
-    shades: Vec<u8>,
+    shades: Vec<Color32>,
 }
 
 impl VramImage {
     pub fn new(width: usize, height: usize) -> Self {
         Self {
             size: [width, height],
-            shades: vec![0; width * height],
+            shades: vec![Color32::BLACK; width * height],
         }
     }
 
-    pub fn write(&mut self, coords: (usize, usize), shade: u8) {
-        self.shades[coords.1 * self.size[0] + coords.0] = shade;
+    pub fn clear(&mut self) {
+        for shade in self.shades.iter_mut() {
+            *shade = Color32::BLACK;
+        }
+    }
+
+    pub fn write(&mut self, coords: (usize, usize), pixel: Color32) {
+        self.shades[coords.1 * self.size[0] + coords.0] = pixel;
+    }
+
+    pub fn add(&mut self, coords: (usize, usize), pixel: Color32) {
+        let index = coords.1 * self.size[0] + coords.0;
+        let old = self.shades[index];
+        self.shades[index] = Color32::from_rgb(
+            old.r() + pixel.r(),
+            old.g() + pixel.g(),
+            old.b() + pixel.b(),
+        );
     }
 
     pub fn changed(&self, image: &ColorImage) -> bool {
-        image
-            .pixels
-            .iter()
-            .map(|p| p.r())
-            .zip(&self.shades)
-            .any(|(a, b)| a != *b)
+        image.pixels.iter().zip(&self.shades).any(|(a, b)| a != b)
     }
 
     pub fn read(&self, image: &mut ColorImage) {
-        for (pixel, shade) in image.pixels.iter_mut().zip(&self.shades) {
-            *pixel = Color32::from_gray(*shade);
-        }
+        image.pixels.copy_from_slice(&self.shades);
     }
 }
 

src/window.rs

@@ -3,7 +3,7 @@ use egui::{Context, ViewportBuilder, ViewportId};
 pub use game::GameWindow;
 pub use gdb::GdbServerWindow;
 pub use input::InputWindow;
-pub use vram::{BgMapWindow, CharacterDataWindow};
+pub use vram::{BgMapWindow, CharacterDataWindow, ObjectWindow};
 use winit::event::KeyEvent;
 
 use crate::emulator::SimId;

src/window/game.rs

@@ -144,6 +144,12 @@ impl GameWindow {
                     .unwrap();
                 ui.close_menu();
             }
+            if ui.button("Objects").clicked() {
+                self.proxy
+                    .send_event(UserEvent::OpenObjects(self.sim_id))
+                    .unwrap();
+                ui.close_menu();
+            }
         });
         ui.menu_button("Help", |ui| {
             if ui.button("About").clicked() {

src/window/vram.rs

@@ -1,6 +1,8 @@
 mod bgmap;
 mod chardata;
+mod object;
 mod utils;
 
 pub use bgmap::*;
 pub use chardata::*;
+pub use object::*;

src/window/vram/bgmap.rs

@@ -16,7 +16,7 @@ use crate::{
     },
 };
 
-use super::utils::{parse_palette, CharacterGrid, GENERIC_PALETTE};
+use super::utils::{self, CharacterGrid};
 
 pub struct BgMapWindow {
     sim_id: SimId,
@@ -90,12 +90,11 @@ impl BgMapWindow {
                 });
             let image = Image::new("vram://cell")
                 .maintain_aspect_ratio(true)
-                .tint(Color32::RED)
                 .texture_options(TextureOptions::NEAREST);
             ui.add(image);
             ui.section("Cell", |ui| {
                 let cell = self.bgmaps.borrow().read::<u16>(self.cell_index);
-                let (char_index, mut vflip, mut hflip, palette_index) = parse_cell(cell);
+                let (char_index, mut vflip, mut hflip, palette_index) = utils::parse_cell(cell);
                 TableBuilder::new(ui)
                     .column(Column::remainder())
                     .column(Column::remainder())
@@ -136,18 +135,18 @@ impl BgMapWindow {
                             });
                         });
                     });
-                ui.section("Display", |ui| {
-                    ui.horizontal(|ui| {
-                        ui.label("Scale");
-                        ui.spacing_mut().slider_width = ui.available_width();
-                        let slider = Slider::new(&mut self.scale, 1.0..=10.0)
-                            .step_by(1.0)
-                            .show_value(false);
-                        ui.add(slider);
-                    });
-                    ui.checkbox(&mut self.show_grid, "Show grid");
-                    ui.checkbox(&mut self.generic_palette, "Generic palette");
+            });
+            ui.section("Display", |ui| {
+                ui.horizontal(|ui| {
+                    ui.label("Scale");
+                    ui.spacing_mut().slider_width = ui.available_width();
+                    let slider = Slider::new(&mut self.scale, 1.0..=10.0)
+                        .step_by(1.0)
+                        .show_value(false);
+                    ui.add(slider);
                 });
+                ui.checkbox(&mut self.show_grid, "Show grid");
+                ui.checkbox(&mut self.generic_palette, "Generic palette");
             });
         });
         self.params.write(BgMapParams {
@@ -205,14 +204,6 @@ impl AppWindow for BgMapWindow {
     }
 }
 
-fn parse_cell(cell: u16) -> (usize, bool, bool, usize) {
-    let char_index = (cell & 0x7ff) as usize;
-    let vflip = cell & 0x1000 != 0;
-    let hflip = cell & 0x2000 != 0;
-    let palette_index = (cell >> 14) as usize;
-    (char_index, vflip, hflip, palette_index)
-}
-
 #[derive(Default, Clone, PartialEq, Eq)]
 struct BgMapParams {
     cell_index: usize,
@@ -244,19 +235,9 @@ impl BgMapRenderer {
 
         let brts = brightness.range::<u8>(0, 8);
         let colors = if generic_palette {
-            [
-                GENERIC_PALETTE,
-                GENERIC_PALETTE,
-                GENERIC_PALETTE,
-                GENERIC_PALETTE,
-            ]
+            [utils::generic_palette(Color32::RED); 4]
         } else {
-            [
-                parse_palette(palettes.read(0), brts),
-                parse_palette(palettes.read(2), brts),
-                parse_palette(palettes.read(4), brts),
-                parse_palette(palettes.read(6), brts),
-            ]
+            [0, 2, 4, 6].map(|i| utils::parse_palette(palettes.read(i), brts, Color32::RED))
         };
 
         for (i, cell) in bgmaps
@@ -264,13 +245,13 @@ impl BgMapRenderer {
             .iter()
             .enumerate()
         {
-            let (char_index, vflip, hflip, palette_index) = parse_cell(*cell);
+            let (char_index, vflip, hflip, palette_index) = utils::parse_cell(*cell);
             let char = chardata.range::<u16>(char_index * 8, 8);
             let palette = &colors[palette_index];
 
             for row in 0..8 {
                 let y = row + (i / 64) * 8;
-                for (col, pixel) in self.read_char_row(char, hflip, vflip, row).enumerate() {
+                for (col, pixel) in utils::read_char_row(char, hflip, vflip, row).enumerate() {
                     let x = col + (i % 64) * 8;
                     image.write((x, y), palette[pixel as usize]);
                 }
@@ -288,34 +269,20 @@ impl BgMapRenderer {
 
         let cell = bgmaps.read::<u16>(index);
 
-        let (char_index, vflip, hflip, palette_index) = parse_cell(cell);
+        let (char_index, vflip, hflip, palette_index) = utils::parse_cell(cell);
         let char = chardata.range::<u16>(char_index * 8, 8);
         let palette = if generic_palette {
-            GENERIC_PALETTE
+            utils::generic_palette(Color32::RED)
         } else {
-            parse_palette(palettes.read(palette_index * 2), brts)
+            utils::parse_palette(palettes.read(palette_index * 2), brts, Color32::RED)
         };
 
         for row in 0..8 {
-            for (col, pixel) in self.read_char_row(char, hflip, vflip, row).enumerate() {
+            for (col, pixel) in utils::read_char_row(char, hflip, vflip, row).enumerate() {
                 image.write((col, row), palette[pixel as usize]);
             }
         }
     }
-
-    fn read_char_row(
-        &self,
-        char: &[u16],
-        hflip: bool,
-        vflip: bool,
-        row: usize,
-    ) -> impl Iterator<Item = u8> {
-        let pixels = if vflip { char[7 - row] } else { char[row] };
-        (0..16).step_by(2).map(move |i| {
-            let pixel = if hflip { 14 - i } else { i };
-            ((pixels >> pixel) & 0x3) as u8
-        })
-    }
 }
 
 impl VramRenderer<2> for BgMapRenderer {

src/window/vram/chardata.rs

@@ -162,7 +162,6 @@ impl CharacterDataWindow {
                 });
             let image = Image::new("vram://char")
                 .maintain_aspect_ratio(true)
-                .tint(Color32::RED)
                 .texture_options(TextureOptions::NEAREST);
             ui.add(image);
             ui.section("Colors", |ui| {
@@ -191,11 +190,7 @@ impl CharacterDataWindow {
                                     let rect = ui.available_rect_before_wrap();
                                     let scale = rect.height() / rect.width();
                                     let rect = rect.scale_from_center2(Vec2::new(scale, 1.0));
-                                    ui.painter().rect_filled(
-                                        rect,
-                                        0.0,
-                                        Color32::RED * Color32::from_gray(color),
-                                    );
+                                    ui.painter().rect_filled(rect, 0.0, color);
                                 });
                             }
                         });
@@ -220,14 +215,14 @@ impl CharacterDataWindow {
         });
     }
 
-    fn load_palette_colors(&self) -> [u8; 4] {
+    fn load_palette_colors(&self) -> [Color32; 4] {
         let Some(offset) = self.palette.offset() else {
-            return utils::GENERIC_PALETTE;
+            return utils::generic_palette(Color32::RED);
         };
         let palette = self.palettes.borrow().read(offset);
         let brightnesses = self.brightness.borrow();
         let brts = brightnesses.range(0, 8);
-        utils::parse_palette(palette, brts)
+        utils::parse_palette(palette, brts, Color32::RED)
     }
 
     fn show_chardata(&mut self, ui: &mut Ui) {
@@ -349,13 +344,13 @@ impl CharDataRenderer {
         }
     }
 
-    fn load_palette(&self, palette: VramPalette) -> [u8; 4] {
+    fn load_palette(&self, palette: VramPalette) -> [Color32; 4] {
         let Some(offset) = palette.offset() else {
-            return utils::GENERIC_PALETTE;
+            return utils::GENERIC_PALETTE.map(|p| utils::shade(p, Color32::RED));
         };
         let palette = self.palettes.borrow().read(offset);
         let brightnesses = self.brightness.borrow();
         let brts = brightnesses.range(0, 8);
-        utils::parse_palette(palette, brts)
+        utils::parse_palette(palette, brts, Color32::RED)
     }
 }

src/window/vram/object.rs

@@ -0,0 +1,277 @@
+use std::sync::Arc;
+
+use egui::{
+    Align, CentralPanel, Checkbox, Color32, Context, Image, ScrollArea, Slider, TextEdit,
+    TextureOptions, Ui, ViewportBuilder, ViewportId,
+};
+use egui_extras::{Column, Size, StripBuilder, TableBuilder};
+
+use crate::{
+    emulator::SimId,
+    memory::{MemoryMonitor, MemoryView},
+    vram::{VramImage, VramParams, VramProcessor, VramRenderer, VramTextureLoader},
+    window::{
+        utils::{NumberEdit, UiExt as _},
+        AppWindow,
+    },
+};
+
+use super::utils;
+
+pub struct ObjectWindow {
+    sim_id: SimId,
+    loader: Arc<VramTextureLoader>,
+    objects: MemoryView,
+    index: usize,
+    generic_palette: bool,
+    params: VramParams<ObjectParams>,
+    scale: f32,
+}
+
+impl ObjectWindow {
+    pub fn new(sim_id: SimId, memory: &mut MemoryMonitor, vram: &mut VramProcessor) -> Self {
+        let renderer = ObjectRenderer::new(sim_id, memory);
+        let ([object], params) = vram.add(renderer);
+        let loader = VramTextureLoader::new([("vram://object".into(), object)]);
+        Self {
+            sim_id,
+            loader: Arc::new(loader),
+            objects: memory.view(sim_id, 0x0003e000, 0x2000),
+            index: 0,
+            generic_palette: false,
+            params,
+            scale: 1.0,
+        }
+    }
+
+    fn show_form(&mut self, ui: &mut Ui) {
+        let row_height = ui.spacing().interact_size.y;
+        ui.vertical(|ui| {
+            TableBuilder::new(ui)
+                .column(Column::auto())
+                .column(Column::remainder())
+                .body(|mut body| {
+                    body.row(row_height, |mut row| {
+                        row.col(|ui| {
+                            ui.label("Index");
+                        });
+                        row.col(|ui| {
+                            ui.add(NumberEdit::new(&mut self.index).range(0..1024));
+                        });
+                    });
+                });
+            ui.section("Properties", |ui| {
+                let object = self.objects.borrow().read::<[u16; 4]>(self.index);
+                let (mut char_index, mut vflip, mut hflip, palette_index) =
+                    utils::parse_cell(object[3]);
+                TableBuilder::new(ui)
+                    .column(Column::remainder())
+                    .column(Column::remainder())
+                    .body(|mut body| {
+                        body.row(row_height, |mut row| {
+                            row.col(|ui| {
+                                ui.label("Character");
+                            });
+                            row.col(|ui| {
+                                ui.add_enabled(
+                                    false,
+                                    NumberEdit::new(&mut char_index).range(0..2048),
+                                );
+                            });
+                        });
+                        body.row(row_height, |mut row| {
+                            row.col(|ui| {
+                                ui.label("Palette");
+                            });
+                            row.col(|ui| {
+                                let mut palette = format!("OBJ {}", palette_index);
+                                ui.add_enabled(
+                                    false,
+                                    TextEdit::singleline(&mut palette).horizontal_align(Align::Max),
+                                );
+                            });
+                        });
+                        body.row(row_height, |mut row| {
+                            row.col(|ui| {
+                                let checkbox = Checkbox::new(&mut hflip, "H-flip");
+                                ui.add_enabled(false, checkbox);
+                            });
+                            row.col(|ui| {
+                                let checkbox = Checkbox::new(&mut vflip, "V-flip");
+                                ui.add_enabled(false, checkbox);
+                            });
+                        });
+                    });
+            });
+            ui.section("Display", |ui| {
+                ui.horizontal(|ui| {
+                    ui.label("Scale");
+                    ui.spacing_mut().slider_width = ui.available_width();
+                    let slider = Slider::new(&mut self.scale, 1.0..=10.0)
+                        .step_by(1.0)
+                        .show_value(false);
+                    ui.add(slider);
+                });
+                ui.checkbox(&mut self.generic_palette, "Generic palette");
+            });
+        });
+        self.params.write(ObjectParams {
+            index: self.index,
+            generic_palette: self.generic_palette,
+            ..ObjectParams::default()
+        });
+    }
+
+    fn show_object(&mut self, ui: &mut Ui) {
+        let image = Image::new("vram://object")
+            .fit_to_original_size(self.scale)
+            .texture_options(TextureOptions::NEAREST);
+        ui.add(image);
+    }
+}
+
+impl AppWindow for ObjectWindow {
+    fn viewport_id(&self) -> egui::ViewportId {
+        ViewportId::from_hash_of(format!("object-{}", self.sim_id))
+    }
+
+    fn sim_id(&self) -> SimId {
+        self.sim_id
+    }
+
+    fn initial_viewport(&self) -> ViewportBuilder {
+        ViewportBuilder::default()
+            .with_title(format!("Object Data ({})", self.sim_id))
+            .with_inner_size((640.0, 480.0))
+    }
+
+    fn on_init(&mut self, ctx: &Context, _render_state: &egui_wgpu::RenderState) {
+        ctx.add_texture_loader(self.loader.clone());
+    }
+
+    fn show(&mut self, ctx: &Context) {
+        CentralPanel::default().show(ctx, |ui| {
+            ui.horizontal_top(|ui| {
+                StripBuilder::new(ui)
+                    .size(Size::relative(0.3))
+                    .size(Size::remainder())
+                    .horizontal(|mut strip| {
+                        strip.cell(|ui| {
+                            ScrollArea::vertical().show(ui, |ui| self.show_form(ui));
+                        });
+                        strip.cell(|ui| {
+                            ScrollArea::both().show(ui, |ui| self.show_object(ui));
+                        });
+                    });
+            });
+        });
+    }
+}
+
+#[derive(Clone, PartialEq, Eq)]
+struct ObjectParams {
+    index: usize,
+    generic_palette: bool,
+    left_color: Color32,
+    right_color: Color32,
+}
+
+impl Default for ObjectParams {
+    fn default() -> Self {
+        Self {
+            index: 0,
+            generic_palette: false,
+            left_color: Color32::from_rgb(0xff, 0x00, 0x00),
+            right_color: Color32::from_rgb(0x00, 0xc6, 0xf0),
+        }
+    }
+}
+
+enum Eye {
+    Left,
+    Right,
+}
+
+struct ObjectRenderer {
+    chardata: MemoryView,
+    objects: MemoryView,
+    brightness: MemoryView,
+    palettes: MemoryView,
+}
+
+impl ObjectRenderer {
+    pub fn new(sim_id: SimId, memory: &mut MemoryMonitor) -> Self {
+        Self {
+            chardata: memory.view(sim_id, 0x00078000, 0x8000),
+            objects: memory.view(sim_id, 0x0003e000, 0x2000),
+            brightness: memory.view(sim_id, 0x0005f824, 8),
+            palettes: memory.view(sim_id, 0x0005f860, 16),
+        }
+    }
+
+    fn render_object(&self, image: &mut VramImage, params: &ObjectParams, eye: Eye) {
+        let chardata = self.chardata.borrow();
+        let objects = self.objects.borrow();
+        let brightness = self.brightness.borrow();
+        let palettes = self.palettes.borrow();
+
+        let object: [u16; 4] = objects.read(params.index);
+
+        let ron = object[1] & 0x4000 != 0;
+        let lon = object[1] & 0x8000 != 0;
+        if match eye {
+            Eye::Left => !lon,
+            Eye::Right => !ron,
+        } {
+            return;
+        }
+
+        let brts = brightness.range::<u8>(0, 8);
+
+        let x = ((object[0] & 0x3ff) << 6 >> 6) as i16;
+        let parallax = ((object[1] & 0x3ff) << 6 >> 6) as i16;
+        let y = ((object[2] & 0x0ff) << 8 >> 8) as i16;
+
+        let (x, color) = match eye {
+            Eye::Left => (x - parallax, params.left_color),
+            Eye::Right => (x + parallax, params.right_color),
+        };
+
+        let (char_index, vflip, hflip, palette_index) = utils::parse_cell(object[3]);
+        let char = chardata.range::<u16>(char_index * 8, 8);
+        let palette = if params.generic_palette {
+            utils::generic_palette(color)
+        } else {
+            utils::parse_palette(palettes.read(8 + palette_index * 2), brts, color)
+        };
+
+        for row in 0..8 {
+            let real_y = y + row as i16;
+            if !(0..384).contains(&real_y) {
+                continue;
+            }
+            for (col, pixel) in utils::read_char_row(char, hflip, vflip, row).enumerate() {
+                let real_x = x + col as i16;
+                if !(0..224).contains(&real_x) {
+                    continue;
+                }
+                image.add((real_x as usize, real_y as usize), palette[pixel as usize]);
+            }
+        }
+    }
+}
+
+impl VramRenderer<1> for ObjectRenderer {
+    type Params = ObjectParams;
+
+    fn sizes(&self) -> [[usize; 2]; 1] {
+        [[384, 224]]
+    }
+
+    fn render(&mut self, params: &Self::Params, images: &mut [VramImage; 1]) {
+        let image = &mut images[0];
+        image.clear();
+        self.render_object(image, params, Eye::Left);
+        self.render_object(image, params, Eye::Right);
+    }
+}

src/window/vram/utils.rs

@@ -2,21 +2,53 @@ use egui::{Color32, Image, ImageSource, Response, Sense, TextureOptions, Ui, Wid
 
 pub const GENERIC_PALETTE: [u8; 4] = [0, 64, 128, 255];
 
-pub fn parse_palette(palette: u8, brts: &[u8]) -> [u8; 4] {
+pub fn shade(brt: u8, color: Color32) -> Color32 {
+    color.gamma_multiply(brt as f32 / 255.0)
+}
+
+pub fn generic_palette(color: Color32) -> [Color32; 4] {
+    GENERIC_PALETTE.map(|brt| shade(brt, color))
+}
+
+pub fn parse_palette(palette: u8, brts: &[u8], color: Color32) -> [Color32; 4] {
     let shades = [
-        0,
-        brts[0],
-        brts[2],
-        brts[0].saturating_add(brts[2]).saturating_add(brts[4]),
+        Color32::BLACK,
+        shade(brts[0], color),
+        shade(brts[2], color),
+        shade(
+            brts[0].saturating_add(brts[2]).saturating_add(brts[4]),
+            color,
+        ),
     ];
     [
-        0,
+        Color32::BLACK,
         shades[(palette >> 2) as usize & 0x03],
         shades[(palette >> 4) as usize & 0x03],
         shades[(palette >> 6) as usize & 0x03],
     ]
 }
 
+pub fn parse_cell(cell: u16) -> (usize, bool, bool, usize) {
+    let char_index = (cell & 0x7ff) as usize;
+    let vflip = cell & 0x1000 != 0;
+    let hflip = cell & 0x2000 != 0;
+    let palette_index = (cell >> 14) as usize;
+    (char_index, vflip, hflip, palette_index)
+}
+
+pub fn read_char_row(
+    char: &[u16],
+    hflip: bool,
+    vflip: bool,
+    row: usize,
+) -> impl Iterator<Item = u8> {
+    let pixels = if vflip { char[7 - row] } else { char[row] };
+    (0..16).step_by(2).map(move |i| {
+        let pixel = if hflip { 14 - i } else { i };
+        ((pixels >> pixel) & 0x3) as u8
+    })
+}
+
 pub struct CharacterGrid<'a> {
     source: ImageSource<'a>,
     scale: f32,
@@ -71,7 +103,6 @@ impl Widget for CharacterGrid<'_> {
     fn ui(self, ui: &mut Ui) -> Response {
         let image = Image::new(self.source)
             .fit_to_original_size(self.scale)
-            .tint(Color32::RED)
             .texture_options(TextureOptions::NEAREST)
             .sense(Sense::click());
         let res = ui.add(image);