gitadora: (arena model) single window mode + subscreen overlay (#486)

## Link to GitHub Issue, if one exists
#477 

## Description of change
This is a work in progress.

What works:
- [x] subscreen overlay shows the touch screen image (in windowed mode)
- [x] touch works in the overlay
- [x] only the main window is shown, other windows are not launched

What doesn't:
- [ ] game occasionally crashes when entering test menu?
- [ ] full screen mode is not tested at all due to monitor requirements
- [ ] need more polish (various options to control the behavior)

src/spice2x/hooks/graphics/backends/d3d9/d3d9_device.cpp

@@ -4,6 +4,7 @@
 #include <mutex>
 
 #include "avs/game.h"
+#include "games/gitadora/gitadora.h"
 #include "hooks/graphics/graphics.h"
 #include "overlay/overlay.h"
 #include "util/flags_helper.h"
@@ -249,8 +250,16 @@ HRESULT STDMETHODCALLTYPE WrappedIDirect3DDevice9::CreateAdditionalSwapChain(
     WRAP_VERBOSE;
 
     HRESULT hr = pReal->CreateAdditionalSwapChain(pPresentationParameters, ppSwapChain);
-
+    bool create_swap_chain = false;
     if (avs::game::is_model({"LDJ", "KFC"})) {
+        create_swap_chain = true;
+    } else if (games::gitadora::is_arena_model() &&
+        games::gitadora::ARENA_SINGLE_WINDOW &&
+        pPresentationParameters->BackBufferWidth == 800) {
+        create_swap_chain = true;
+    }
+
+    if (create_swap_chain) {
         if (SUCCEEDED(hr) && !sub_swapchain) {
             sub_swapchain = new WrappedIDirect3DSwapChain9(this, *ppSwapChain);
             sub_swapchain->should_run_hooks = false;
@@ -295,7 +304,17 @@ HRESULT STDMETHODCALLTYPE WrappedIDirect3DDevice9::GetSwapChain(
         return D3D_OK;
     }
 
+    bool swap = false;
     if (iSwapChain == 1 && avs::game::is_model({"LDJ", "KFC"})) {
+        swap = true;
+    }
+    if (games::gitadora::is_arena_model() &&
+        games::gitadora::ARENA_SINGLE_WINDOW &&
+        iSwapChain == 3) {
+        swap = true;
+    }
+
+    if (swap) {
         if (sub_swapchain) {
             sub_swapchain->AddRef();
             *ppSwapChain = static_cast<IDirect3DSwapChain9 *>(sub_swapchain);