Enhance DungeonEditor functionality by adding room graphics loading and rendering capabilities; implement bitmap drawing for background layers and room objects in the canvas, improving visual representation of dungeon rooms.

src/app/editor/dungeon/dungeon_editor.cc

@@ -3,6 +3,7 @@
 #include "absl/container/flat_hash_map.h"
 #include "app/core/features.h"
 #include "app/core/platform/renderer.h"
+#include "app/gfx/arena.h"
 #include "app/gfx/snes_palette.h"
 #include "app/gui/canvas.h"
 #include "app/gui/color.h"
@@ -60,6 +61,8 @@ absl::Status DungeonEditor::Load() {
       rooms_[i].LoadRoomGraphics();
     }
 
+    // rooms_[i].LoadObjects();
+
     auto dungeon_palette_ptr = rom()->paletteset_ids[rooms_[i].palette][0];
     auto palette_id = rom()->ReadWord(0xDEC4B + dungeon_palette_ptr);
     if (palette_id.status() != absl::OkStatus()) {
@@ -477,11 +480,22 @@ void DungeonEditor::DrawDungeonCanvas(int room_id) {
   gui::InputHexWord("Message ID", &rooms_[room_id].message_id_);
   SameLine();
 
+  if (Button("Load Room")) {
+    rooms_[room_id].LoadRoomGraphics();
+  }
+
   ImGui::EndGroup();
 
-  canvas_.DrawBackground(ImVec2(0x200, 0x200));
+  canvas_.DrawBackground();
   canvas_.DrawContextMenu();
   if (is_loaded_) {
+    canvas_.DrawBitmap(gfx::Arena::Get().bg1_bitmap(), 0, 0);
+    canvas_.DrawBitmap(gfx::Arena::Get().bg2_bitmap(), 0, 0);
+
+    for (const auto &object : rooms_[room_id].tile_objects_) {
+      canvas_.DrawOutline(object.x_, object.y_, object.width_ * 16,
+                          object.height_ * 16);
+    }
     canvas_.DrawBitmap(rooms_[room_id].layer1(), 0, 0);
   }
   canvas_.DrawGrid();

src/app/editor/dungeon/dungeon_editor.h

@@ -40,8 +40,8 @@ constexpr ImGuiTableFlags kDungeonTableFlags =
  */
 class DungeonEditor : public Editor {
  public:
-  explicit DungeonEditor(Rom* rom = nullptr) : rom_(rom) { 
-    type_ = EditorType::kDungeon; 
+  explicit DungeonEditor(Rom* rom = nullptr) : rom_(rom) {
+    type_ = EditorType::kDungeon;
   }
 
   void Initialize() override;
@@ -57,10 +57,7 @@ class DungeonEditor : public Editor {
 
   void add_room(int i) { active_rooms_.push_back(i); }
 
-  // Set the ROM pointer
   void set_rom(Rom* rom) { rom_ = rom; }
-  
-  // Get the ROM pointer
   Rom* rom() const { return rom_; }
 
  private:
@@ -118,7 +115,7 @@ class DungeonEditor : public Editor {
   gfx::SnesPalette full_palette_;
   gfx::PaletteGroup current_palette_group_;
 
-  gui::Canvas canvas_;
+  gui::Canvas canvas_{"##DungeonCanvas", ImVec2(0x200, 0x200)};
   gui::Canvas room_gfx_canvas_;
   gui::Canvas object_canvas_;
 

src/app/zelda3/dungeon/room.cc

@@ -223,7 +223,7 @@ constexpr int kGfxBufferRoomSpriteStride = 2048;
 constexpr int kGfxBufferRoomSpriteLastLineOffset = 0x88;
 
 void Room::CopyRoomGraphicsToBuffer() {
-  auto gfx_buffer_data = rom()->graphics_buffer();
+  auto gfx_buffer_data = rom()->mutable_graphics_buffer();
 
   // Copy room graphics to buffer
   int sheet_pos = 0;
@@ -231,7 +231,7 @@ void Room::CopyRoomGraphicsToBuffer() {
     int data = 0;
     int block_offset = blocks_[i] * kGfxBufferRoomOffset;
     while (data < kGfxBufferRoomOffset) {
-      uint8_t map_byte = gfx_buffer_data[data + block_offset];
+      uint8_t map_byte = (*gfx_buffer_data)[data + block_offset];
       if (i < 4) {
         map_byte += kGfxBufferRoomSpriteLastLineOffset;
       }
@@ -249,18 +249,18 @@ void Room::CopyRoomGraphicsToBuffer() {
 void Room::LoadAnimatedGraphics() {
   int gfx_ptr = SnesToPc(rom()->version_constants().kGfxAnimatedPointer);
 
-  auto gfx_buffer_data = rom()->graphics_buffer();
+  auto gfx_buffer_data = rom()->mutable_graphics_buffer();
   auto rom_data = rom()->vector();
   int data = 0;
   while (data < 512) {
     uint8_t map_byte =
-        gfx_buffer_data[data + (92 * 2048) + (512 * animated_frame_)];
+        (*gfx_buffer_data)[data + (92 * 2048) + (512 * animated_frame_)];
     current_gfx16_[data + (7 * 2048)] = map_byte;
 
     map_byte =
-        gfx_buffer_data[data +
-                        (rom_data[gfx_ptr + background_tileset_] * 2048) +
-                        (512 * animated_frame_)];
+        (*gfx_buffer_data)[data +
+                           (rom_data[gfx_ptr + background_tileset_] * 2048) +
+                           (512 * animated_frame_)];
     current_gfx16_[data + (7 * 2048) - 512] = map_byte;
     data++;
   }

src/app/zelda3/dungeon/room.h

@@ -79,6 +79,9 @@ constexpr int NumberOfRooms = 296;
 
 constexpr uint16_t stairsObjects[] = {0x139, 0x138, 0x13B, 0x12E, 0x12D};
 
+constexpr int tile_address = 0x001B52;
+constexpr int tile_address_floor = 0x001B5A;
+
 struct LayerMergeType {
   uint8_t ID;
   std::string Name;
@@ -231,7 +234,7 @@ class Room : public SharedRom {
   bool is_light_;
   bool is_loaded_;
   bool is_dark_;
-  bool is_floor_;
+  bool is_floor_ = true;
 
   int room_id_;
   int animated_frame_;