MxMIDIPresenter functions (#204)

* MxMIDIPresenter destructor, stub Destroy for now

* MxMIDIPresenter::EndMIDIAction + update param name

m_MIDIInitialized is definitely public, since it is accessed from the global
MusicManager.

* Add getter for MIDIInitialized, fix virtual function decl

---------

Co-authored-by: Christian Semmler <mail@csemmler.com>

LEGO1/mxmidipresenter.cpp

@@ -1,16 +1,39 @@
 #include "mxmidipresenter.h"
 
 #include "decomp.h"
+#include "legoomni.h"
+#include "mxmusicmanager.h"
 
 DECOMP_SIZE_ASSERT(MxMIDIPresenter, 0x58);
 
 // OFFSET: LEGO1 0x100c25e0
-MxMIDIPresenter::MxMIDIPresenter() {
+MxMIDIPresenter::MxMIDIPresenter()
+{
   Init();
 }
 
+// OFFSET: LEGO1 0x100c27c0
+MxMIDIPresenter::~MxMIDIPresenter()
+{
+  Destroy(TRUE);
+}
+
 // OFFSET: LEGO1 0x100c2820
 void MxMIDIPresenter::Init()
 {
   m_unk54 = 0;
 }
+
+// OFFSET: LEGO1 0x100c2830 STUB
+void MxMIDIPresenter::Destroy(MxBool p_fromDestructor)
+{
+  // TODO
+}
+
+// OFFSET: LEGO1 0x100c2940
+void MxMIDIPresenter::DoneTickle()
+{
+  if (!MusicManager()->GetMIDIInitialized()) {
+    this->EndAction();
+  }
+}

LEGO1/mxmidipresenter.h

@@ -8,6 +8,7 @@ class MxMIDIPresenter : public MxMusicPresenter
 {
 public:
   MxMIDIPresenter();
+  virtual ~MxMIDIPresenter() override;
 
   // OFFSET: LEGO1 0x100c2650
   inline virtual const char *ClassName() const override // vtable+0xc
@@ -22,8 +23,12 @@ public:
     return !strcmp(name, MxMIDIPresenter::ClassName()) || MxMusicPresenter::IsA(name);
   }
 
+  virtual void DoneTickle() override; // vtable+0x2c
+
 private:
   void Init();
+  void Destroy(MxBool);
+
   undefined4 m_unk54;
 };
 

LEGO1/mxmusicmanager.h

@@ -16,6 +16,8 @@ public:
   virtual void SetVolume(MxS32 p_volume) override; // vtable+2c
   virtual MxResult StartMIDIThread(MxU32 p_frequencyMS, MxU8 p_noRegister); // vtable+30
 
+  inline MxBool GetMIDIInitialized() { return m_MIDIInitialized; }
+
 private:
   void Destroy(MxBool p_fromDestructor);
   void DeinitializeMIDI();