Fix controller paging regression in creative menu

Preserve smooth row-by-row scrolling for mouse wheel input, but restore
full-page movement for controller/menu scroll actions in the creative
inventory.

Commit 3093ca3 changed page indexing to support smooth scrolling, which
caused ACTION_MENU_OTHER_STICK_UP/DOWN to advance by one row instead of
one page. Track whether the scroll action originated from the mouse
wheel and only use single-row steps in that case.

Fixes #253

3 files changed, 28 insertions, 3 deletions

diff --git a/Minecraft.Client/Common/UI/IUIScene_CreativeMenu.cpp b/Minecraft.Client/Common/UI/IUIScene_CreativeMenu.cpp
index 544fedc0..04852e97 100644
--- a/Minecraft.Client/Common/UI/IUIScene_CreativeMenu.cpp
+++ b/Minecraft.Client/Common/UI/IUIScene_CreativeMenu.cpp
@@ -1098,7 +1098,15 @@ void IUIScene_CreativeMenu::handleAdditionalKeyPress(int iAction)
 		}
 		break;
 	case ACTION_MENU_OTHER_STICK_DOWN:
-			++m_tabPage[m_curTab];
+		{
+			int pageStep = TabSpec::rows;
+#ifdef _WINDOWS64
+			if (g_KBMInput.WasMouseWheelConsumed())
+			{
+				pageStep = 1;
+			}
+#endif
+			m_tabPage[m_curTab] += pageStep;
 			if(m_tabPage[m_curTab] >= specs[m_curTab]->getPageCount())
 			{
 				m_tabPage[m_curTab] = specs[m_curTab]->getPageCount() - 1;
@@ -1107,9 +1115,18 @@ void IUIScene_CreativeMenu::handleAdditionalKeyPress(int iAction)
 			{
 				switchTab(m_curTab);
 			}
+		}
 		break;
 	case ACTION_MENU_OTHER_STICK_UP:
-			--m_tabPage[m_curTab];
+		{
+			int pageStep = TabSpec::rows;
+#ifdef _WINDOWS64
+			if (g_KBMInput.WasMouseWheelConsumed())
+			{
+				pageStep = 1;
+			}
+#endif
+			m_tabPage[m_curTab] -= pageStep;
 			if(m_tabPage[m_curTab] < 0)
 			{
 				m_tabPage[m_curTab] = 0;
@@ -1118,6 +1135,7 @@ void IUIScene_CreativeMenu::handleAdditionalKeyPress(int iAction)
 			{
 				switchTab(m_curTab);
 			}
+		}
 		break;
 	}
 }
diff --git a/Minecraft.Client/Windows64/KeyboardMouseInput.cpp b/Minecraft.Client/Windows64/KeyboardMouseInput.cpp
index 7ab99a71..95c3f4fc 100644
--- a/Minecraft.Client/Windows64/KeyboardMouseInput.cpp
+++ b/Minecraft.Client/Windows64/KeyboardMouseInput.cpp
@@ -33,6 +33,7 @@ void KeyboardMouseInput::Init()
 	m_mouseDeltaAccumX = 0;
 	m_mouseDeltaAccumY = 0;
 	m_mouseWheelAccum = 0;
+	m_mouseWheelConsumed = false;
 	m_mouseGrabbed = false;
 	m_cursorHiddenForUI = false;
 	m_windowFocused = true;
@@ -67,6 +68,7 @@ void KeyboardMouseInput::ClearAllState()
 	m_mouseDeltaAccumX = 0;
 	m_mouseDeltaAccumY = 0;
 	m_mouseWheelAccum = 0;
+	m_mouseWheelConsumed = false;
 }
 
 void KeyboardMouseInput::Tick()
@@ -88,6 +90,7 @@ void KeyboardMouseInput::Tick()
 	m_mouseDeltaY = m_mouseDeltaAccumY;
 	m_mouseDeltaAccumX = 0;
 	m_mouseDeltaAccumY = 0;
+	m_mouseWheelConsumed = false;
 
 	m_hasInput = (m_mouseDeltaX != 0 || m_mouseDeltaY != 0 || m_mouseWheelAccum != 0);
 	if (!m_hasInput)
@@ -172,6 +175,8 @@ void KeyboardMouseInput::OnMouseWheel(int delta)
 int KeyboardMouseInput::GetMouseWheel()
 {
 	int val = m_mouseWheelAccum;
+	if (val != 0)
+		m_mouseWheelConsumed = true;
 	m_mouseWheelAccum = 0;
 	return val;
 }
diff --git a/Minecraft.Client/Windows64/KeyboardMouseInput.h b/Minecraft.Client/Windows64/KeyboardMouseInput.h
index f098ccab..05067055 100644
--- a/Minecraft.Client/Windows64/KeyboardMouseInput.h
+++ b/Minecraft.Client/Windows64/KeyboardMouseInput.h
@@ -59,7 +59,8 @@ public:
 
 	int GetMouseWheel();
 	int PeekMouseWheel() const { return m_mouseWheelAccum; }
-	void ConsumeMouseWheel() { m_mouseWheelAccum = 0; }
+	void ConsumeMouseWheel() { if (m_mouseWheelAccum != 0) m_mouseWheelConsumed = true; m_mouseWheelAccum = 0; }
+	bool WasMouseWheelConsumed() const { return m_mouseWheelConsumed; }
 
 	// Per-frame delta consumption for low-latency mouse look.
 	// Reads and clears the raw accumulators (not the per-tick snapshot).
@@ -114,6 +115,7 @@ private:
 	int m_mouseDeltaAccumY;
 
 	int m_mouseWheelAccum;
+	bool m_mouseWheelConsumed;
 
 	bool m_mouseGrabbed;