From 953c9a5c7f7e989692c0d054337d445cb48534b0 Mon Sep 17 00:00:00 2001
From: scawful <justin.scofield@outlook.com>
Date: Wed, 24 Apr 2024 23:38:00 -0400
Subject: [PATCH] Add load rom file to emulator ui

---
 src/app/emu/cpu/cpu.h   |  1 -
 src/app/emu/emulator.cc | 37 +++++++++++++++++++++++++++----------
 src/app/emu/emulator.h  |  2 ++
 src/cli/CMakeLists.txt  |  1 +
 4 files changed, 30 insertions(+), 11 deletions(-)

diff --git a/src/app/emu/cpu/cpu.h b/src/app/emu/cpu/cpu.h
index 40738dfc..69c62e24 100644
--- a/src/app/emu/cpu/cpu.h
+++ b/src/app/emu/cpu/cpu.h
@@ -727,7 +727,6 @@ class Cpu : public Loggable, public core::ExperimentFlags {
   // ==========================================================================
   uint16_t SP() const { return memory.SP(); }
   void SetSP(uint16_t value) { memory.SetSP(value); }
-  void set_next_pc(uint16_t value) { next_pc_ = value; }
 
   bool IsBreakpoint(uint32_t address) {
     return std::find(breakpoints_.begin(), breakpoints_.end(), address) !=
diff --git a/src/app/emu/emulator.cc b/src/app/emu/emulator.cc
index 4d73f772..b7ca61f5 100644
--- a/src/app/emu/emulator.cc
+++ b/src/app/emu/emulator.cc
@@ -7,6 +7,7 @@
 #include <vector>
 
 #include "app/core/constants.h"
+#include "app/core/platform/file_dialog.h"
 #include "app/emu/snes.h"
 #include "app/gui/icons.h"
 #include "app/gui/input.h"
@@ -58,9 +59,10 @@ void Emulator::Run() {
       printf("Failed to create texture: %s\n", SDL_GetError());
       return;
     }
-    snes_.Init(*rom());
-    wanted_frames_ = 1.0 /  60.0;
-    wanted_samples_ = 48000 /60;
+    rom_data_ = rom()->vector();
+    snes_.Init(rom_data_);
+    wanted_frames_ = 1.0 / (snes_.Memory().pal_timing() ? 50.0 : 60.0);
+    wanted_samples_ = 48000 / (snes_.Memory().pal_timing() ? 50 : 60);
     loaded = true;
 
     countFreq = SDL_GetPerformanceFrequency();
@@ -110,9 +112,9 @@ void Emulator::Run() {
 }
 
 void Emulator::RenderSnesPpu() {
-  ImVec2 size = ImVec2(320, 480);
+  ImVec2 size = ImVec2(512, 480);
   if (snes_.running()) {
-    ImGui::BeginChild("EmulatorOutput", ImVec2(0, 240), true,
+    ImGui::BeginChild("EmulatorOutput", ImVec2(0, 480), true,
                       ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoScrollbar);
     ImGui::SetCursorPosX((ImGui::GetWindowSize().x - size.x) * 0.5f);
     ImGui::SetCursorPosY((ImGui::GetWindowSize().y - size.y) * 0.5f);
@@ -121,7 +123,7 @@ void Emulator::RenderSnesPpu() {
 
   } else {
     ImGui::Text("Emulator output not available.");
-    ImGui::BeginChild("EmulatorOutput", ImVec2(0, 240), true,
+    ImGui::BeginChild("EmulatorOutput", ImVec2(0, 480), true,
                       ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoScrollbar);
     ImGui::SetCursorPosX(((ImGui::GetWindowSize().x * 0.5f) - size.x) * 0.5f);
     ImGui::SetCursorPosY(((ImGui::GetWindowSize().y * 0.5f) - size.y) * 0.5f);
@@ -141,7 +143,8 @@ void Emulator::RenderNavBar() {
       }
     }
   )";
-  auto navbar_node = gui::zeml::Parse(navbar_layout);
+
+  static auto navbar_node = gui::zeml::Parse(navbar_layout);
   gui::zeml::Render(navbar_node);
 
   if (ImGui::Button(ICON_MD_PLAY_ARROW)) {
@@ -210,14 +213,16 @@ void Emulator::RenderNavBar() {
     ImGui::SetTooltip("Settings");
   }
 
+  static bool open_file = false;
   SameLine();
   if (ImGui::Button(ICON_MD_INFO)) {
+    open_file = true;
+
+    // About Debugger logic
+  }
     if (ImGui::IsItemHovered()) {
       ImGui::SetTooltip("About Debugger");
     }
-    // About Debugger logic
-  }
-
   SameLine();
   ImGui::Checkbox("Logging", snes_.cpu().mutable_log_instructions());
 
@@ -239,6 +244,18 @@ void Emulator::RenderNavBar() {
     RenderMemoryViewer();
     ImGui::End();
   }
+
+  if (open_file) {
+    auto file_name = FileDialogWrapper::ShowOpenFileDialog();
+    if (!file_name.empty()) {
+      std::ifstream file(file_name, std::ios::binary);
+      // Load the data directly into rom_data
+      rom_data_.assign(std::istreambuf_iterator<char>(file),
+                       std::istreambuf_iterator<char>());
+      snes_.Init(rom_data_);
+      open_file = false;
+    }
+  }
 }
 
 void Emulator::HandleEvents() {
diff --git a/src/app/emu/emulator.h b/src/app/emu/emulator.h
index 324e15e5..da9775ef 100644
--- a/src/app/emu/emulator.h
+++ b/src/app/emu/emulator.h
@@ -143,6 +143,8 @@ class Emulator : public SharedRom {
   SNES snes_;
   SDL_Texture* ppu_texture_;
 
+  std::vector<uint8_t> rom_data_;
+
   gui::zeml::Node emulator_node_;
 };
 
diff --git a/src/cli/CMakeLists.txt b/src/cli/CMakeLists.txt
index 404bc855..5bafd437 100644
--- a/src/cli/CMakeLists.txt
+++ b/src/cli/CMakeLists.txt
@@ -8,6 +8,7 @@ add_executable(
   app/core/labeling.cc
   app/gui/pipeline.cc
   app/editor/context/gfx_context.cc
+  app/core/platform/file_dialog.mm
   ${YAZE_APP_EMU_SRC}
   ${YAZE_APP_GFX_SRC}
   ${YAZE_APP_ZELDA3_SRC}