Implement/match MxRegionCursor class (#385)

* Implement/match MxRegionCursor class

* Rename function

CMakeLists.txt

@@ -162,6 +162,7 @@ add_library(lego1 SHARED
   LEGO1/mxramstreamcontroller.cpp
   LEGO1/mxramstreamprovider.cpp
   LEGO1/mxregion.cpp
+  LEGO1/mxregioncursor.cpp
   LEGO1/mxrendersettings.cpp
   LEGO1/mxscheduler.cpp
   LEGO1/mxsemaphore.cpp

LEGO1/mxlist.h

@@ -92,13 +92,23 @@ public:
 	void Detach();
 	void Destroy();
 	MxBool Next(T& p_obj);
+	MxBool Prev(T& p_obj);
 	MxBool Current(T& p_obj);
 	MxBool First(T& p_obj);
 	MxBool Last(T& p_obj);
 	MxBool Advance();
 	MxBool HasMatch() { return m_match != NULL; }
 	void SetValue(T p_obj);
-	void Head() { m_match = m_list->m_first; }
+	MxBool Head()
+	{
+		m_match = m_list->m_first;
+		return m_match != NULL;
+	}
+	MxBool Tail()
+	{
+		m_match = m_list->m_last;
+		return m_match != NULL;
+	}
 	void Reset() { m_match = NULL; }
 	void Prepend(T p_newobj);
 
@@ -110,8 +120,8 @@ public:
 	}
 
 private:
-	MxList<T>* m_list;
-	MxListEntry<T>* m_match;
+	MxList<T>* m_list;       // 0x08
+	MxListEntry<T>* m_match; // 0x0c
 };
 
 template <class T>
@@ -226,6 +236,20 @@ inline MxBool MxListCursor<T>::Next(T& p_obj)
 	return m_match != NULL;
 }
 
+template <class T>
+inline MxBool MxListCursor<T>::Prev(T& p_obj)
+{
+	if (!m_match)
+		m_match = m_list->m_last;
+	else
+		m_match = m_match->GetPrev();
+
+	if (m_match)
+		p_obj = m_match->GetValue();
+
+	return m_match != NULL;
+}
+
 template <class T>
 inline MxBool MxListCursor<T>::Current(T& p_obj)
 {

LEGO1/mxrect32.h

@@ -110,10 +110,10 @@ private:
 	inline static MxS32 Min(MxS32 p_a, MxS32 p_b) { return p_a <= p_b ? p_a : p_b; };
 	inline static MxS32 Max(MxS32 p_a, MxS32 p_b) { return p_a <= p_b ? p_b : p_a; };
 
-	MxS32 m_left;
-	MxS32 m_top;
-	MxS32 m_right;
-	MxS32 m_bottom;
+	MxS32 m_left;   // 0x00
+	MxS32 m_top;    // 0x04
+	MxS32 m_right;  // 0x08
+	MxS32 m_bottom; // 0x0c
 };
 
 #endif // MXRECT32_H

LEGO1/mxregion.cpp

@@ -9,7 +9,7 @@ DECOMP_SIZE_ASSERT(MxRegionLeftRight, 0x08);
 // FUNCTION: LEGO1 0x100c31c0
 MxRegion::MxRegion()
 {
-	m_list = new MxRegionList;
+	m_list = new MxRegionTopBottomList;
 	m_rect = MxRect32(INT_MAX, INT_MAX, -1, -1);
 }
 
@@ -38,7 +38,7 @@ void MxRegion::VTable0x18(MxRect32& p_rect)
 {
 	MxRect32 rect(p_rect);
 	MxRect32 newRect;
-	MxRegionListCursor cursor(m_list);
+	MxRegionTopBottomListCursor cursor(m_list);
 	MxRegionTopBottom* topBottom;
 
 	while (rect.IsValid() && cursor.Next(topBottom)) {
@@ -91,7 +91,7 @@ MxBool MxRegion::VTable0x1c(MxRect32& p_rect)
 	if (!m_rect.IntersectsWith(p_rect))
 		return FALSE;
 
-	MxRegionListCursor cursor(m_list);
+	MxRegionTopBottomListCursor cursor(m_list);
 	MxRegionTopBottom* topBottom;
 
 	while (cursor.Next(topBottom)) {

LEGO1/mxregion.h

@@ -18,11 +18,14 @@ public:
 	virtual MxBool VTable0x1c(MxRect32& p_rect); // vtable+0x1c
 	virtual MxBool VTable0x20();                 // vtable+0x20
 
-	inline MxRect32& GetRect() { return this->m_rect; }
+	inline MxRegionTopBottomList* GetTopBottomList() const { return m_list; }
+	inline const MxRect32& GetRect() const { return m_rect; }
+
+	friend class MxRegionCursor;
 
 private:
-	MxRegionList* m_list; // 0x08
-	MxRect32 m_rect;      // 0x0c
+	MxRegionTopBottomList* m_list; // 0x08
+	MxRect32 m_rect;               // 0x0c
 };
 
 #endif // MXREGION_H

LEGO1/mxregioncursor.cpp

@@ -0,0 +1,284 @@
+#include "mxregioncursor.h"
+
+DECOMP_SIZE_ASSERT(MxRegionCursor, 0x18);
+
+// FUNCTION: LEGO1 0x100c3f70
+MxRegionCursor::MxRegionCursor(MxRegion* p_region)
+{
+	m_region = p_region;
+	m_rect = NULL;
+	m_topBottomCursor = new MxRegionTopBottomListCursor(m_region->m_list);
+	m_leftRightCursor = NULL;
+}
+
+// FUNCTION: LEGO1 0x100c40b0
+MxRegionCursor::~MxRegionCursor()
+{
+	if (m_rect)
+		delete m_rect;
+
+	if (m_topBottomCursor)
+		delete m_topBottomCursor;
+
+	if (m_leftRightCursor)
+		delete m_leftRightCursor;
+}
+
+// FUNCTION: LEGO1 0x100c4140
+MxRect32* MxRegionCursor::VTable0x18()
+{
+	m_topBottomCursor->Head();
+
+	MxRegionTopBottom* topBottom;
+	if (m_topBottomCursor->Current(topBottom)) {
+		FUN_100c46c0(*topBottom->m_leftRightList);
+
+		MxRegionLeftRight* leftRight;
+		m_leftRightCursor->First(leftRight);
+
+		UpdateRect(leftRight->GetLeft(), topBottom->GetTop(), leftRight->GetRight(), topBottom->GetBottom());
+	}
+	else
+		Reset();
+
+	return m_rect;
+}
+
+// FUNCTION: LEGO1 0x100c41d0
+MxRect32* MxRegionCursor::VTable0x20()
+{
+	m_topBottomCursor->Tail();
+
+	MxRegionTopBottom* topBottom;
+	if (m_topBottomCursor->Current(topBottom)) {
+		FUN_100c46c0(*topBottom->m_leftRightList);
+
+		MxRegionLeftRight* leftRight;
+		m_leftRightCursor->Last(leftRight);
+
+		UpdateRect(leftRight->GetLeft(), topBottom->GetTop(), leftRight->GetRight(), topBottom->GetBottom());
+	}
+	else
+		Reset();
+
+	return m_rect;
+}
+
+// FUNCTION: LEGO1 0x100c4260
+MxRect32* MxRegionCursor::VTable0x28()
+{
+	MxRegionLeftRight* leftRight;
+	MxRegionTopBottom* topBottom;
+
+	if (m_leftRightCursor && m_leftRightCursor->Next(leftRight)) {
+		m_topBottomCursor->Current(topBottom);
+
+		UpdateRect(leftRight->GetLeft(), topBottom->GetTop(), leftRight->GetRight(), topBottom->GetBottom());
+		return m_rect;
+	}
+
+	if (m_topBottomCursor->Next(topBottom)) {
+		FUN_100c46c0(*topBottom->m_leftRightList);
+		m_leftRightCursor->First(leftRight);
+
+		UpdateRect(leftRight->GetLeft(), topBottom->GetTop(), leftRight->GetRight(), topBottom->GetBottom());
+		return m_rect;
+	}
+
+	Reset();
+	return m_rect;
+}
+
+// FUNCTION: LEGO1 0x100c4360
+MxRect32* MxRegionCursor::VTable0x30()
+{
+	MxRegionLeftRight* leftRight;
+	MxRegionTopBottom* topBottom;
+
+	if (m_leftRightCursor && m_leftRightCursor->Prev(leftRight)) {
+		m_topBottomCursor->Current(topBottom);
+
+		UpdateRect(leftRight->GetLeft(), topBottom->GetTop(), leftRight->GetRight(), topBottom->GetBottom());
+		return m_rect;
+	}
+
+	if (m_topBottomCursor->Prev(topBottom)) {
+		FUN_100c46c0(*topBottom->m_leftRightList);
+		m_leftRightCursor->Last(leftRight);
+
+		UpdateRect(leftRight->GetLeft(), topBottom->GetTop(), leftRight->GetRight(), topBottom->GetBottom());
+		return m_rect;
+	}
+
+	Reset();
+	return m_rect;
+}
+
+// FUNCTION: LEGO1 0x100c4460
+MxRect32* MxRegionCursor::VTable0x14(MxRect32& p_rect)
+{
+	m_topBottomCursor->Reset();
+	FUN_100c4a20(p_rect);
+	return m_rect;
+}
+
+// FUNCTION: LEGO1 0x100c4480
+MxRect32* MxRegionCursor::VTable0x1c(MxRect32& p_rect)
+{
+	m_topBottomCursor->Reset();
+	FUN_100c4b50(p_rect);
+	return m_rect;
+}
+
+// FUNCTION: LEGO1 0x100c44a0
+MxRect32* MxRegionCursor::VTable0x24(MxRect32& p_rect)
+{
+	MxRegionLeftRight* leftRight;
+
+	if (m_leftRightCursor && m_leftRightCursor->Next(leftRight)) {
+		MxRegionTopBottom* topBottom;
+
+		m_topBottomCursor->Current(topBottom);
+
+		if (topBottom->IntersectsWith(p_rect) && leftRight->IntersectsWith(p_rect)) {
+			UpdateRect(leftRight->GetLeft(), topBottom->GetTop(), leftRight->GetRight(), topBottom->GetBottom());
+			m_rect->Intersect(p_rect);
+		}
+		else
+			FUN_100c4a20(p_rect);
+	}
+	else
+		FUN_100c4a20(p_rect);
+
+	return m_rect;
+}
+
+// FUNCTION: LEGO1 0x100c4590
+MxRect32* MxRegionCursor::VTable0x2c(MxRect32& p_rect)
+{
+	MxRegionLeftRight* leftRight;
+
+	if (m_leftRightCursor && m_leftRightCursor->Prev(leftRight)) {
+		MxRegionTopBottom* topBottom;
+
+		m_topBottomCursor->Current(topBottom);
+
+		if (topBottom->IntersectsWith(p_rect) && leftRight->IntersectsWith(p_rect)) {
+			UpdateRect(leftRight->GetLeft(), topBottom->GetTop(), leftRight->GetRight(), topBottom->GetBottom());
+			m_rect->Intersect(p_rect);
+		}
+		else
+			FUN_100c4b50(p_rect);
+	}
+	else
+		FUN_100c4b50(p_rect);
+
+	return m_rect;
+}
+
+// FUNCTION: LEGO1 0x100c4680
+void MxRegionCursor::Reset()
+{
+	if (m_rect) {
+		delete m_rect;
+		m_rect = NULL;
+	}
+
+	m_topBottomCursor->Reset();
+
+	if (m_leftRightCursor) {
+		delete m_leftRightCursor;
+		m_leftRightCursor = NULL;
+	}
+}
+
+// FUNCTION: LEGO1 0x100c46c0
+void MxRegionCursor::FUN_100c46c0(MxRegionLeftRightList& p_leftRightList)
+{
+	if (m_leftRightCursor)
+		delete m_leftRightCursor;
+
+	m_leftRightCursor = new MxRegionLeftRightListCursor(&p_leftRightList);
+}
+
+// FUNCTION: LEGO1 0x100c4980
+void MxRegionCursor::UpdateRect(MxS32 p_left, MxS32 p_top, MxS32 p_right, MxS32 p_bottom)
+{
+	if (!m_rect)
+		m_rect = new MxRect32;
+
+	m_rect->SetLeft(p_left);
+	m_rect->SetTop(p_top);
+	m_rect->SetRight(p_right);
+	m_rect->SetBottom(p_bottom);
+}
+
+// FUNCTION: LEGO1 0x100c4a20
+void MxRegionCursor::FUN_100c4a20(MxRect32& p_rect)
+{
+	MxRegionTopBottom* topBottom;
+	while (m_topBottomCursor->Next(topBottom)) {
+		if (p_rect.GetBottom() <= topBottom->GetTop()) {
+			Reset();
+			return;
+		}
+
+		if (p_rect.GetTop() < topBottom->GetBottom()) {
+			FUN_100c46c0(*topBottom->m_leftRightList);
+
+			MxRegionLeftRight* leftRight;
+			while (m_leftRightCursor->Next(leftRight)) {
+				if (p_rect.GetRight() <= leftRight->GetLeft())
+					break;
+
+				if (p_rect.GetLeft() < leftRight->GetRight()) {
+					UpdateRect(
+						leftRight->GetLeft(),
+						topBottom->GetTop(),
+						leftRight->GetRight(),
+						topBottom->GetBottom()
+					);
+					m_rect->Intersect(p_rect);
+					return;
+				}
+			}
+		}
+	}
+
+	Reset();
+}
+
+// FUNCTION: LEGO1 0x100c4b50
+void MxRegionCursor::FUN_100c4b50(MxRect32& p_rect)
+{
+	MxRegionTopBottom* topBottom;
+	while (m_topBottomCursor->Prev(topBottom)) {
+		if (topBottom->GetBottom() <= p_rect.GetTop()) {
+			Reset();
+			return;
+		}
+
+		if (topBottom->GetTop() < p_rect.GetBottom()) {
+			FUN_100c46c0(*topBottom->m_leftRightList);
+
+			MxRegionLeftRight* leftRight;
+			while (m_leftRightCursor->Prev(leftRight)) {
+				if (leftRight->GetRight() <= p_rect.GetLeft())
+					break;
+
+				if (leftRight->GetLeft() < p_rect.GetRight()) {
+					UpdateRect(
+						leftRight->GetLeft(),
+						topBottom->GetTop(),
+						leftRight->GetRight(),
+						topBottom->GetBottom()
+					);
+					m_rect->Intersect(p_rect);
+					return;
+				}
+			}
+		}
+	}
+
+	Reset();
+}

LEGO1/mxregioncursor.h

@@ -0,0 +1,45 @@
+#ifndef MXREGIONCURSOR_H
+#define MXREGIONCURSOR_H
+
+#include "mxregion.h"
+
+// VTABLE: LEGO1 0x100dcbb8
+// SIZE 0x18
+class MxRegionCursor : public MxCore {
+public:
+	MxRegionCursor(MxRegion* p_region);
+	virtual ~MxRegionCursor() override;
+
+	virtual MxRect32* VTable0x14(MxRect32& p_rect); // vtable+0x14
+	virtual MxRect32* VTable0x18();                 // vtable+0x18
+	virtual MxRect32* VTable0x1c(MxRect32& p_rect); // vtable+0x1c
+	virtual MxRect32* VTable0x20();                 // vtable+0x20
+	virtual MxRect32* VTable0x24(MxRect32& p_rect); // vtable+0x24
+	virtual MxRect32* VTable0x28();                 // vtable+0x28
+	virtual MxRect32* VTable0x2c(MxRect32& p_rect); // vtable+0x2c
+	virtual MxRect32* VTable0x30();                 // vtable+0x30
+
+	// FUNCTION: LEGO1 0x100c4070
+	virtual MxRect32* GetRect() { return m_rect; } // vtable+0x34
+
+	// FUNCTION: LEGO1 0x100c4080
+	virtual MxBool HasRect() { return m_rect != NULL; } // vtable+0x38
+
+	virtual void Reset(); // vtable+0x3c
+
+private:
+	void FUN_100c46c0(MxRegionLeftRightList& p_leftRightList);
+	void UpdateRect(MxS32 p_left, MxS32 p_top, MxS32 p_right, MxS32 p_bottom);
+	void FUN_100c4a20(MxRect32& p_rect);
+	void FUN_100c4b50(MxRect32& p_rect);
+
+	MxRegion* m_region;                             // 0x08
+	MxRect32* m_rect;                               // 0x0c
+	MxRegionTopBottomListCursor* m_topBottomCursor; // 0x10
+	MxRegionLeftRightListCursor* m_leftRightCursor; // 0x14
+};
+
+// SYNTHETIC: LEGO1 0x100c4090
+// MxRegionCursor::`scalar deleting destructor'
+
+#endif // MXREGIONCURSOR_H

LEGO1/mxregionlist.h

@@ -19,9 +19,11 @@ struct MxRegionLeftRight {
 	inline void SetLeft(MxS32 p_left) { m_left = p_left; }
 	inline void SetRight(MxS32 p_right) { m_right = p_right; }
 
+	inline MxBool IntersectsWith(MxRect32& p_rect) { return m_left < p_rect.GetRight() && p_rect.GetTop() < m_right; }
+
 private:
-	MxS32 m_left;
-	MxS32 m_right;
+	MxS32 m_left;  // 0x00
+	MxS32 m_right; // 0x04
 };
 
 // VTABLE: LEGO1 0x100dcc40
@@ -68,12 +70,15 @@ struct MxRegionTopBottom {
 	inline void SetTop(MxS32 p_top) { m_top = p_top; }
 	inline void SetBottom(MxS32 p_bottom) { m_bottom = p_bottom; }
 
-	friend class MxRegionList;
+	inline MxBool IntersectsWith(MxRect32& p_rect) { return m_top < p_rect.GetBottom() && p_rect.GetTop() < m_bottom; }
+
+	friend class MxRegionTopBottomList;
+	friend class MxRegionCursor;
 
 private:
-	MxS32 m_top;
-	MxS32 m_bottom;
-	MxRegionLeftRightList* m_leftRightList;
+	MxS32 m_top;                            // 0x00
+	MxS32 m_bottom;                         // 0x04
+	MxRegionLeftRightList* m_leftRightList; // 0x08
 };
 
 // VTABLE: LEGO1 0x100dcb10
@@ -87,9 +92,9 @@ private:
 
 // VTABLE: LEGO1 0x100dcb58
 // SIZE 0x18
-class MxRegionList : public MxPtrList<MxRegionTopBottom> {
+class MxRegionTopBottomList : public MxPtrList<MxRegionTopBottom> {
 public:
-	MxRegionList() : MxPtrList<MxRegionTopBottom>(TRUE) {}
+	MxRegionTopBottomList() : MxPtrList<MxRegionTopBottom>(TRUE) {}
 };
 
 // VTABLE: LEGO1 0x100dcb70
@@ -98,14 +103,14 @@ public:
 // VTABLE: LEGO1 0x100dcba0
 // class MxListCursor<MxRegionTopBottom *>
 
-// TODO: The initialize list param type should be MxRegionList, but doing that
+// TODO: The initialize list param type should be MxRegionTopBottomList, but doing that
 // drastically reduced the match percentage for MxRegion::VTable0x18.
 // It also works with MxPtrList, so we'll do that until we figure this out.
 
 // VTABLE: LEGO1 0x100dcb88
-class MxRegionListCursor : public MxPtrListCursor<MxRegionTopBottom> {
+class MxRegionTopBottomListCursor : public MxPtrListCursor<MxRegionTopBottom> {
 public:
-	MxRegionListCursor(MxPtrList<MxRegionTopBottom>* p_list) : MxPtrListCursor<MxRegionTopBottom>(p_list){};
+	MxRegionTopBottomListCursor(MxPtrList<MxRegionTopBottom>* p_list) : MxPtrListCursor<MxRegionTopBottom>(p_list){};
 };
 
 // TEMPLATE: LEGO1 0x100c32e0
@@ -127,7 +132,7 @@ public:
 // MxPtrList<MxRegionTopBottom>::`scalar deleting destructor'
 
 // SYNTHETIC: LEGO1 0x100c3be0
-// MxRegionListCursor::`scalar deleting destructor'
+// MxRegionTopBottomListCursor::`scalar deleting destructor'
 
 // TEMPLATE: LEGO1 0x100c3c50
 // MxPtrListCursor<MxRegionTopBottom>::~MxPtrListCursor<MxRegionTopBottom>
@@ -142,7 +147,7 @@ public:
 // MxListCursor<MxRegionTopBottom *>::~MxListCursor<MxRegionTopBottom *>
 
 // FUNCTION: LEGO1 0x100c3dd0
-// MxRegionListCursor::~MxRegionListCursor
+// MxRegionTopBottomListCursor::~MxRegionTopBottomListCursor
 
 // SYNTHETIC: LEGO1 0x100c4790
 // MxRegionLeftRightListCursor::`scalar deleting destructor'

LEGO1/mxvideopresenter.cpp

@@ -313,7 +313,7 @@ MxBool MxVideoPresenter::IsHit(MxS32 p_x, MxS32 p_y)
 }
 
 // STUB: LEGO1 0x100b2a70
-void MxVideoPresenter::VTable0x6c()
+void MxVideoPresenter::PutFrame()
 {
 	// TODO
 }
@@ -482,7 +482,7 @@ MxResult MxVideoPresenter::PutData()
 	MxAutoLocker lock(&m_criticalSection);
 
 	if (IsEnabled() && m_currentTickleState >= TickleState_Streaming && m_currentTickleState <= TickleState_unk5)
-		VTable0x6c();
+		PutFrame();
 
 	return SUCCESS;
 }

LEGO1/mxvideopresenter.h

@@ -47,7 +47,7 @@ public:
 	virtual void CreateBitmap();                         // vtable+0x60
 	virtual void NextFrame();                            // vtable+0x64
 	virtual void LoadFrame(MxStreamChunk* p_chunk);      // vtable+0x68
-	virtual void VTable0x6c();                           // vtable+0x6c
+	virtual void PutFrame();                             // vtable+0x6c
 	virtual void RealizePalette();                       // vtable+0x70
 	virtual undefined VTable0x74();                      // vtable+0x74
 	virtual LPDIRECTDRAWSURFACE VTable0x78();            // vtable+0x78