More return types, set up all dBgS_MoveBgActor subclasses

src/d/actor/d_a_obj_pirateship.cpp

@@ -39,7 +39,7 @@ void daObjPirateship::Act_c::sound_proc() {
 }
 
 /* 0000095C-00000A50       .text CreateHeap__Q215daObjPirateship5Act_cFv */
-void daObjPirateship::Act_c::CreateHeap() {
+BOOL daObjPirateship::Act_c::CreateHeap() {
     /* Nonmatching */
 }
 
@@ -59,12 +59,12 @@ void daObjPirateship::Act_c::DeleteWave() {
 }
 
 /* 00000D38-00000DA4       .text Create__Q215daObjPirateship5Act_cFv */
-s32 daObjPirateship::Act_c::Create() {
+BOOL daObjPirateship::Act_c::Create() {
     /* Nonmatching */
 }
 
 /* 00000DA4-00000DB4       .text Execute__Q215daObjPirateship5Act_cFPPA3_A4_f */
-void daObjPirateship::Act_c::Execute(float(**)[3][4]) {
+BOOL daObjPirateship::Act_c::Execute(Mtx**) {
     /* Nonmatching */
 }