add gamepad menu support

include/renpy/interact.h

@@ -12,11 +12,16 @@ namespace renpy {
     constexpr int yStride = 100;
   };
 
+  extern int lastGamepadItem;
+  extern bool lastUseGamepad;
+
   bool overlap(int menuWidth, int menuHeight,
                int x, int y,
                int mx, int my,
                int windowWidth, int windowHeight);
   void update(interpreter & state,
               int mx, int my, bool mLeft,
+              bool gUp, bool gDown, bool gAccept,
+              bool useGamepad,
               int windowWidth, int windowHeight);
 }

src/main.cpp

@@ -1023,6 +1023,9 @@ int main()
   audio::init();
   audio::load(renpy::script::audio, renpy::script::audio_length);
 
+  bool useGamepad = false;
+  uint32_t whichGamepad = 0;
+
   while (quit == false) {
     audio::update();
 
@@ -1063,6 +1066,7 @@ int main()
         }
       }
       if (event.type == SDL_EVENT_MOUSE_MOTION) {
+        useGamepad = false;
         if (event.motion.state & SDL_BUTTON_LMASK) {
           //collada_state.mouse_motion(cameraIndex, cameraTargetIndex, event.motion.xrel, event.motion.yrel, 0);
         }
@@ -1079,6 +1083,11 @@ int main()
       if (event.type == SDL_EVENT_GAMEPAD_REMOVED) {
         remove_gamepad(event.gdevice.which);
       }
+      if (event.type == SDL_EVENT_GAMEPAD_BUTTON_DOWN) {
+        whichGamepad = event.gbutton.which;
+        useGamepad = true;
+        fprintf(stderr, "use gamepad: which %d\n", whichGamepad);
+      }
     }
 
     //////////////////////////////////////////////////////////////////////
@@ -1089,7 +1098,22 @@ int main()
     float my;
     uint32_t mouseFlags = SDL_GetMouseState(&mx, &my);
     bool mLeft = (mouseFlags & SDL_BUTTON_LMASK) != 0;
+    bool gUp = false;
+    bool gDown = false;
+    bool gAccept = false;
+    if (useGamepad) {
+      for (int i = 0; i < gamepad_count; i++) {
+        if (SDL_GetGamepadID(gamepads[i]) == whichGamepad) {
+          gUp = SDL_GetGamepadButton(gamepads[i], SDL_GAMEPAD_BUTTON_DPAD_UP);
+          gDown = SDL_GetGamepadButton(gamepads[i], SDL_GAMEPAD_BUTTON_DPAD_DOWN);
+          gAccept = SDL_GetGamepadButton(gamepads[i], SDL_GAMEPAD_BUTTON_SOUTH) || SDL_GetGamepadButton(gamepads[i], SDL_GAMEPAD_BUTTON_EAST);
+          break;
+        }
+      }
+    }
+
     renpy::update(interpreter_state, mx, my, mLeft,
+                  gUp, gDown, gAccept, useGamepad,
                   surfaceCapabilities.currentExtent.width,
                   surfaceCapabilities.currentExtent.height);
 

src/renpy/interact.cpp

@@ -30,34 +30,84 @@ namespace renpy {
     return mxf >= minX && mxf <= maxX && myf >= minY && myf <= maxY;
   }
 
+  static bool lastMenuPause = false;
   static bool lastmLeft = false;
+  int lastGamepadItem = 0;
+  bool lastUseGamepad = false;
+
+  static bool lastgUp = false;
+  static bool lastgDown = false;
+  static bool lastgAccept = false;
+
+  static void jumpToMenuItem(interpreter & state, int i)
+  {
+    // jump to menu item
+    uint32_t optionIndex = state.menu.optionIndex + i;
+    assert(optionIndex < (uint32_t)script::options_length);
+    uint32_t next_pc = script::options[optionIndex].statementIndex;
+    fprintf(stderr, "interact[%d]: menu jump %d\n", state.pc, next_pc);
+    state.pc = next_pc;
+    state.pause.menu = false;
+  }
 
   void update(interpreter & state,
               int mx, int my, bool mLeft,
+              bool _gUp, bool _gDown, bool _gAccept,
+              bool useGamepad,
               int windowWidth, int windowHeight)
   {
+    lastUseGamepad = useGamepad;
+
     bool mDown = mLeft && (!lastmLeft);
     lastmLeft = mLeft;
-    //if (mDown) {
-    //state.pause.voice = false;
-    //}
 
-    if (!state.pause.menu || !mDown)
+    bool pauseTransition = state.pause.menu && (!lastMenuPause);
+    lastMenuPause = state.pause.menu;
+
+    bool gUp = _gUp && (!lastgUp);
+    bool gDown = _gDown && (!lastgDown);
+    bool gAccept = _gAccept && (!lastgAccept);
+    lastgUp = _gUp;
+    lastgDown = _gDown;
+    lastgAccept = _gAccept;
+
+    if (!state.pause.menu) {
       return;
+    }
 
-    for (uint32_t i = 0; i < state.menu.count; i++) {
-      int y = menu::yStride * i + menu::y;
+    if (pauseTransition) {
+      fprintf(stderr, "interact::update: menu pause transition\n");
+      lastGamepadItem = 0;
+    }
 
-      bool overlap = renpy::overlap(menu::width, menu::height, menu::x, y, mx, my, windowWidth, windowHeight);
-      if (overlap) {
-        // jump to menu item
-        uint32_t optionIndex = state.menu.optionIndex + i;
-        assert(optionIndex < (uint32_t)script::options_length);
-        uint32_t next_pc = script::options[optionIndex].statementIndex;
-        fprintf(stderr, "interact[%d]: menu jump %d\n", state.pc, next_pc);
-        state.pc = next_pc;
-        state.pause.menu = false;
-        break;
+    if (useGamepad) {
+      //printf("useGamepad %d %d\n", gUp, _gAccept);
+      if (gUp) {
+        lastGamepadItem -= 1;
+        if (lastGamepadItem < 0)
+          lastGamepadItem = state.menu.count - 1;
+      }
+      if (gDown) {
+        lastGamepadItem += 1;
+        if (lastGamepadItem >= (int)state.menu.count)
+          lastGamepadItem = 0;
+      }
+      if (gAccept) {
+        jumpToMenuItem(state, lastGamepadItem);
+      }
+    } else {
+      // use mouse
+      for (uint32_t i = 0; i < state.menu.count; i++) {
+        int y = menu::yStride * i + menu::y;
+
+        bool overlap = renpy::overlap(menu::width, menu::height, menu::x, y, mx, my, windowWidth, windowHeight);
+        if (overlap) {
+          lastGamepadItem = i;
+          if (mDown) {
+            jumpToMenuItem(state, i);
+            return;
+          }
+        }
       }
     }
   }

src/renpy/vulkan.cpp

@@ -534,7 +534,12 @@ namespace renpy {
     for (uint32_t i = 0; i < state.menu.count; i++) {
       int y = menu::yStride * i + menu::y;
 
-      bool overlap = renpy::overlap(menu::width, menu::height, menu::x, y, mx, my, windowWidth, windowHeight);
+      bool overlap = false;
+      if (renpy::lastUseGamepad) {
+        overlap = (i == (uint32_t)lastGamepadItem);
+      } else {
+        overlap = renpy::overlap(menu::width, menu::height, menu::x, y, mx, my, windowWidth, windowHeight);
+      }
       instanceMappedData[maximumImageCount * frameIndex + outputIndex++] = {
         .size = {menu::width, menu::height},
         .topLeft = {menu::x, (int16_t)(y)},