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();
+  }
+}