From fb0d1ccb6289823a68a1ad05b588224fea9a3c0a Mon Sep 17 00:00:00 2001
From: Christian Semmler <mail@csemmler.com>
Date: Sat, 25 Nov 2023 13:26:44 -0500
Subject: [PATCH] Implement/match MxLoopingMIDIPresenter (#302)

* Implement/match MxLoopingMIDIPresenter

* Move declarations
---
 LEGO1/mxloopingmidipresenter.cpp | 54 ++++++++++++++++++++++++++++++++
 LEGO1/mxloopingmidipresenter.h   |  6 ++--
 LEGO1/mxmidipresenter.h          |  1 +
 LEGO1/mxmusicmanager.cpp         |  2 +-
 LEGO1/mxmusicmanager.h           |  2 +-
 5 files changed, 61 insertions(+), 4 deletions(-)

diff --git a/LEGO1/mxloopingmidipresenter.cpp b/LEGO1/mxloopingmidipresenter.cpp
index ebeed4b4..d1b670ac 100644
--- a/LEGO1/mxloopingmidipresenter.cpp
+++ b/LEGO1/mxloopingmidipresenter.cpp
@@ -1,5 +1,59 @@
 #include "mxloopingmidipresenter.h"
 
 #include "decomp.h"
+#include "mxdssound.h"
+#include "mxmusicmanager.h"
+#include "mxomni.h"
 
 DECOMP_SIZE_ASSERT(MxLoopingMIDIPresenter, 0x58);
+
+// OFFSET: LEGO1 0x100b1830 TEMPLATE
+// MxLoopingMIDIPresenter::ClassName
+
+// OFFSET: LEGO1 0x100b1840 TEMPLATE
+// MxLoopingMIDIPresenter::IsA
+
+// OFFSET: LEGO1 0x100b19c0 TEMPLATE
+// MxLoopingMIDIPresenter::`scalar deleting destructor'
+
+// OFFSET: LEGO1 0x100c2a80
+void MxLoopingMIDIPresenter::StreamingTickle()
+{
+	if (m_action->GetLoopCount()) {
+		MxMIDIPresenter::StreamingTickle();
+		return;
+	}
+
+	if (!m_chunk) {
+		m_chunk = NextChunk();
+		return;
+	}
+
+	if (m_chunk->GetTime() + m_action->GetDuration() <= m_action->GetElapsedTime()) {
+		m_previousTickleStates |= 1 << (unsigned char) m_currentTickleState;
+		m_currentTickleState = TickleState_Done;
+	}
+}
+
+// OFFSET: LEGO1 0x100c2ae0
+void MxLoopingMIDIPresenter::DoneTickle()
+{
+	if (m_action->GetLoopCount())
+		MxMIDIPresenter::DoneTickle();
+	else
+		EndAction();
+}
+
+// OFFSET: LEGO1 0x100c2b00
+undefined4 MxLoopingMIDIPresenter::PutData()
+{
+	m_criticalSection.Enter();
+
+	if (m_currentTickleState == TickleState_Streaming && m_chunk && !MusicManager()->GetMIDIInitialized()) {
+		SetVolume(((MxDSSound*) m_action)->GetVolume());
+		MusicManager()->FUN_100c09c0(m_chunk->GetData(), !m_action->GetLoopCount() ? -1 : m_action->GetLoopCount());
+	}
+
+	m_criticalSection.Leave();
+	return 0;
+}
diff --git a/LEGO1/mxloopingmidipresenter.h b/LEGO1/mxloopingmidipresenter.h
index 45f03875..142b2b7f 100644
--- a/LEGO1/mxloopingmidipresenter.h
+++ b/LEGO1/mxloopingmidipresenter.h
@@ -7,18 +7,20 @@
 // SIZE 0x58
 class MxLoopingMIDIPresenter : public MxMIDIPresenter {
 public:
-	// OFFSET: LEGO1 0x100b1830
 	inline virtual const char* ClassName() const override // vtable+0xc
 	{
 		// 0x10101de0
 		return "MxLoopingMIDIPresenter";
 	}
 
-	// OFFSET: LEGO1 0x100b1840
 	inline virtual MxBool IsA(const char* name) const override // vtable+0x10
 	{
 		return !strcmp(name, MxLoopingMIDIPresenter::ClassName()) || MxMIDIPresenter::IsA(name);
 	}
+
+	virtual void StreamingTickle() override; // vtable+0x20
+	virtual void DoneTickle() override;      // vtable+0x2c
+	virtual undefined4 PutData() override;   // vtable+0x4c
 };
 
 #endif // MXLOOPINGMIDIPRESENTER_H
diff --git a/LEGO1/mxmidipresenter.h b/LEGO1/mxmidipresenter.h
index 0d2afc2d..6bc7d8e6 100644
--- a/LEGO1/mxmidipresenter.h
+++ b/LEGO1/mxmidipresenter.h
@@ -37,6 +37,7 @@ class MxMIDIPresenter : public MxMusicPresenter {
 	void Init();
 	void Destroy(MxBool p_fromDestructor);
 
+protected:
 	MxStreamChunk* m_chunk;
 };
 
diff --git a/LEGO1/mxmusicmanager.cpp b/LEGO1/mxmusicmanager.cpp
index 1e971f4d..90af1789 100644
--- a/LEGO1/mxmusicmanager.cpp
+++ b/LEGO1/mxmusicmanager.cpp
@@ -137,7 +137,7 @@ MxS32 MxMusicManager::CalculateVolume(MxS32 p_volume)
 }
 
 // OFFSET: LEGO1 0x100c09c0 STUB
-undefined4 MxMusicManager::FUN_100c09c0(MxU8* p_data, undefined4)
+undefined4 MxMusicManager::FUN_100c09c0(MxU8* p_data, MxS32 p_loopCount)
 {
 	// TODO
 	return 0;
diff --git a/LEGO1/mxmusicmanager.h b/LEGO1/mxmusicmanager.h
index b4a3a1c4..36c9ddf3 100644
--- a/LEGO1/mxmusicmanager.h
+++ b/LEGO1/mxmusicmanager.h
@@ -18,7 +18,7 @@ class MxMusicManager : public MxAudioManager {
 	inline MxBool GetMIDIInitialized() { return m_MIDIInitialized; }
 
 	void DeinitializeMIDI();
-	undefined4 FUN_100c09c0(MxU8* p_data, undefined4);
+	undefined4 FUN_100c09c0(MxU8* p_data, MxS32 p_loopCount);
 	void SetMultiplier(MxS32 p_multiplier);
 
 private: