popn: subscreen overlay (#631)

## Link to GitHub Issue or related Pull Request, if one exists
#618 

## Description of change

Add overlay for subscreen.

Add an option for no subscreen window.

Use the same "force redraw subscreen" logic we used in SDVX to fix the
same issue.

Known issues:

* still crashing when running windowed if there is only one monitor
* having only one monitor causes sunscreen overlay to not work
(NumberOfAdaptersInGroup issue?)

## Testing

src/spice2x/overlay/overlay.cpp

@@ -5,6 +5,7 @@
 #include "games/io.h"
 #include "games/gitadora/gitadora.h"
 #include "games/iidx/iidx.h"
+#include "games/popn/popn.h"
 #include "hooks/graphics/graphics.h"
 #include "misc/eamuse.h"
 #include "touch/touch.h"
@@ -35,6 +36,7 @@
 #include "windows/iopanel_ddr.h"
 #include "windows/iopanel_gfdm.h"
 #include "windows/iopanel_iidx.h"
+#include "windows/popn_sub.h"
 #include "windows/sdvx_sub.h"
 #include "windows/keypad.h"
 #include "windows/log.h"
@@ -415,6 +417,8 @@ void overlay::SpiceOverlay::init() {
             window_sub = new overlay::windows::SDVXSubScreen(this);
         } else if (games::gitadora::is_arena_model() && games::gitadora::ARENA_SINGLE_WINDOW) {
             window_sub = new overlay::windows::GitaDoraSubScreen(this);
+        } else if (games::popn::is_pikapika_model()) {
+            window_sub = new overlay::windows::PopnSubScreen(this);
         }
 
         if (window_sub) {

src/spice2x/overlay/windows/exitprompt.cpp

@@ -4,6 +4,7 @@
 #include "util/logging.h"
 #include "games/iidx/iidx.h"
 #include "games/gitadora/gitadora.h"
+#include "games/popn/popn.h"
 
 namespace overlay::windows {
 
@@ -72,6 +73,8 @@ namespace overlay::windows {
             sub = "Show DRS Dance Floor";
         } else if (games::gitadora::is_arena_model() && games::gitadora::ARENA_SINGLE_WINDOW) {
             sub = "Show GITADORA Subscreen";
+        } else if (games::popn::is_pikapika_model()) {
+            sub = "Show Pop'n Subscreen";
         }
 
         build_button(this->overlay->window_sub, sub, size, NextItem::NEW_LINE, false);

src/spice2x/overlay/windows/popn_sub.cpp

@@ -0,0 +1,53 @@
+#undef CINTERFACE
+
+#include "avs/game.h"
+#include "popn_sub.h"
+#include "games/popn/popn.h"
+#include "hooks/graphics/graphics.h"
+#include "touch/touch.h"
+
+namespace overlay::windows {
+
+    PopnSubScreen::PopnSubScreen(SpiceOverlay *overlay) : GenericSubScreen(overlay) {
+        this->title = "Pop'n Subscreen";
+
+        if (!games::popn::is_pikapika_model()) {
+            this->disabled_message = "Game did not launch as Pikapika Pop-kun (invalid <spec>)!";
+        } else if (games::popn::SHOW_PIKA_MONITOR_WARNING) {
+            this->disabled_message = "Subscreen overlay is not compatible with -dxmainadapter option, use -mainmonitor instead";
+        } else if (GRAPHICS_WINDOWED && !GRAPHICS_PREVENT_SECONDARY_WINDOW) {
+            this->disabled_message = "Subscren overlay was not enabled in spicecfg. Use the second window (ALT+TAB).";
+        }
+
+        this->resize_callback = keep_16_by_10;
+        float size = 0.5f;
+        this->init_size = ImVec2(
+            ImGui::GetIO().DisplaySize.x * size,
+            (ImGui::GetIO().DisplaySize.x * size * 10 / 16) + ImGui::GetFrameHeight());
+
+        this->size_max = ImVec2(
+            ImGui::GetIO().DisplaySize.x - ImGui::GetFrameHeight() * 2,
+            ImGui::GetIO().DisplaySize.y - ImGui::GetFrameHeight() * 2);
+
+        // middle / bottom
+        this->init_pos = ImVec2(
+            ImGui::GetIO().DisplaySize.x / 2 - this->init_size.x / 2,
+            ImGui::GetIO().DisplaySize.y - this->init_size.y - (ImGui::GetFrameHeight() / 2));
+    }
+
+    void PopnSubScreen::touch_transform(const ImVec2 xy_in, LONG *x_out, LONG *y_out) {
+        if (!this->get_active()) {
+            return;
+        }
+
+        if (GRAPHICS_WINDOWED) {
+            // Touch needs to be registered on global coords
+            *x_out = SPICETOUCH_TOUCH_X + xy_in.x * SPICETOUCH_TOUCH_WIDTH;
+            *y_out = SPICETOUCH_TOUCH_Y + xy_in.y * SPICETOUCH_TOUCH_HEIGHT;
+        } else {
+            // Fullscreen mode, scale to game coords
+            *x_out = xy_in.x * ImGui::GetIO().DisplaySize.x;
+            *y_out = xy_in.y * ImGui::GetIO().DisplaySize.y;
+        }
+    }
+}

src/spice2x/overlay/windows/popn_sub.h

@@ -0,0 +1,22 @@
+#pragma once
+
+#include <windows.h>
+
+#include "overlay/window.h"
+#include "overlay/windows/generic_sub.h"
+
+namespace overlay::windows {
+
+    class PopnSubScreen : public GenericSubScreen {
+    public:
+        PopnSubScreen(SpiceOverlay *overlay);
+
+    protected:
+        void touch_transform(const ImVec2 xy_in, LONG *x_out, LONG *y_out) override;
+
+    private:
+        static void keep_16_by_10(ImGuiSizeCallbackData* data) {
+            data->DesiredSize.y = (data->DesiredSize.x * 10.f / 16.f) + ImGui::GetFrameHeight();
+        }
+    };
+}