diff --git a/ISLE/isleapp.cpp b/ISLE/isleapp.cpp
index 93500783..198389a3 100644
--- a/ISLE/isleapp.cpp
+++ b/ISLE/isleapp.cpp
@@ -90,7 +90,7 @@ void IsleApp::Close()
 
     VideoManager()->Get3DManager()->GetLego3DView()->GetViewManager()->RemoveAll(NULL);
 
-    Lego()->RemoveWorld(ds.GetAtomId(), ds.GetUnknown1c());
+    Lego()->RemoveWorld(ds.GetAtomId(), ds.GetObjectId());
     Lego()->vtable24(ds);
     TransitionManager()->SetWaitIndicator(NULL);
     Lego()->vtable3c();
@@ -729,7 +729,7 @@ inline void IsleApp::Tick(BOOL sleepIfNotNextFrame)
 
       ds.SetAtomId(stream->atom);
       ds.SetUnknown24(-1);
-      ds.SetUnknown1c(0);
+      ds.SetObjectId(0);
       VideoManager()->EnableFullScreenMovie(TRUE, TRUE);
 
       if (Start(&ds) != SUCCESS) {
@@ -738,7 +738,7 @@ inline void IsleApp::Tick(BOOL sleepIfNotNextFrame)
     } else {
       ds.SetAtomId(stream->atom);
       ds.SetUnknown24(-1);
-      ds.SetUnknown1c(0);
+      ds.SetObjectId(0);
       if (Start(&ds) != SUCCESS) {
         return;
       }
diff --git a/LEGO1/mxdsaction.cpp b/LEGO1/mxdsaction.cpp
index d6e1fdb5..7b977d1f 100644
--- a/LEGO1/mxdsaction.cpp
+++ b/LEGO1/mxdsaction.cpp
@@ -41,3 +41,184 @@ MxDSAction::~MxDSAction()
 {
   delete this->m_unk7c;
 }
+
+// OFFSET: LEGO1 0x100adaf0
+void MxDSAction::CopyFrom(MxDSAction &p_dsAction)
+{
+  this->SetObjectId(p_dsAction.GetObjectId());
+  this->m_flags = p_dsAction.m_flags;
+  this->m_startTime = p_dsAction.m_startTime;
+  this->m_duration = p_dsAction.m_duration;
+  this->m_loopCount = p_dsAction.m_loopCount;
+
+  // TODO
+  // this->m_location.SetVector(p_dsAction.m_location.GetData());
+  // this->m_direction.SetVector(p_dsAction.m_direction.GetData());
+  // this->m_up.SetVector(p_dsAction.m_up.GetData());
+
+  FUN_100ADE60(p_dsAction.m_unk80, p_dsAction.m_unk7c);
+  this->m_unk84 = p_dsAction.m_unk84;
+  this->m_unk88 = p_dsAction.m_unk88;
+  this->m_omni = p_dsAction.m_omni;
+  this->m_someTimingField = p_dsAction.m_someTimingField;
+}
+
+// OFFSET: LEGO1 0x100adc10
+MxDSAction &MxDSAction::operator=(MxDSAction &p_dsAction)
+{
+  if (this == &p_dsAction)
+    return *this;
+
+  MxDSObject::operator=(p_dsAction);
+  this->CopyFrom(p_dsAction);
+  return *this;
+}
+
+// OFFSET: LEGO1 0x100adbe0
+MxU32 MxDSAction::GetSizeOnDisk()
+{
+  MxU32 totalSizeOnDisk;
+
+  totalSizeOnDisk = MxDSObject::GetSizeOnDisk() + 90 + this->m_unk80;
+  this->m_sizeOnDisk = totalSizeOnDisk - MxDSObject::GetSizeOnDisk();
+
+  return totalSizeOnDisk;
+}
+
+// OFFSET: LEGO1 0x100adf70
+void MxDSAction::Deserialize(char **p_source, MxS16 p_unk24)
+{
+  MxDSObject::Deserialize(p_source, p_unk24);
+
+  this->m_flags = *(DWORD*) *p_source;
+  *p_source += sizeof(DWORD);
+  this->m_startTime = *(DWORD*) *p_source;
+  *p_source += sizeof(DWORD);
+  this->m_duration = *(MxLong*) *p_source;
+  *p_source += sizeof(MxLong);
+  this->m_loopCount = *(MxS32*) *p_source;
+  *p_source += sizeof(MxS32);
+  this->m_location[0] = *(double*) *p_source;
+  *p_source += sizeof(double);
+  this->m_location[1] = *(double*) *p_source;
+  *p_source += sizeof(double);
+  this->m_location[2] = *(double*) *p_source;
+  *p_source += sizeof(double);
+  this->m_direction[0] = *(double*) *p_source;
+  *p_source += sizeof(double);
+  this->m_direction[1] = *(double*) *p_source;
+  *p_source += sizeof(double);
+  this->m_direction[2] = *(double*) *p_source;
+  *p_source += sizeof(double);
+  this->m_up[0] = *(double*) *p_source;
+  *p_source += sizeof(double);
+  this->m_up[1] = *(double*) *p_source;
+  *p_source += sizeof(double);
+  this->m_up[2] = *(double*) *p_source;
+  *p_source += sizeof(double);
+
+  MxU16 extralen = *(MxU16*) *p_source;
+  *p_source += sizeof(MxU16);
+  if (extralen) {
+    FUN_100ADE60(extralen, *p_source);
+    *p_source += extralen;
+  }
+}
+
+// OFFSET: LEGO1 0x100ad940
+MxLong MxDSAction::GetDuration()
+{
+  return this->m_duration;
+}
+
+// OFFSET: LEGO1 0x100ad950
+void MxDSAction::SetDuration(MxLong p_duration)
+{
+  this->m_duration = p_duration;
+}
+
+// OFFSET: LEGO1 0x100adc40
+MxDSAction *MxDSAction::Clone()
+{
+  MxDSAction *clone = new MxDSAction();
+
+  if (clone)
+    *clone = *this;
+
+  return clone;
+}
+
+// OFFSET: LEGO1 0x100add00
+void MxDSAction::MergeFrom(MxDSAction &p_dsAction)
+{
+  if (p_dsAction.m_startTime != INT_MIN)
+    this->m_startTime = p_dsAction.m_startTime;
+
+  if (p_dsAction.GetDuration() != INT_MIN)
+    this->m_duration = p_dsAction.GetDuration();
+
+  if (p_dsAction.m_loopCount != -1)
+    this->m_loopCount = p_dsAction.m_loopCount;
+
+  if (p_dsAction.m_location[0] != FLT_MAX)
+    this->m_location[0] = p_dsAction.m_location[0];
+  if (p_dsAction.m_location[1] != FLT_MAX)
+    this->m_location[1] = p_dsAction.m_location[1];
+  if (p_dsAction.m_location[2] != FLT_MAX)
+    this->m_location[2] = p_dsAction.m_location[2];
+
+  if (p_dsAction.m_direction[0] != FLT_MAX)
+    this->m_direction[0] = p_dsAction.m_direction[0];
+  if (p_dsAction.m_direction[1] != FLT_MAX)
+    this->m_direction[1] = p_dsAction.m_direction[1];
+  if (p_dsAction.m_direction[2] != FLT_MAX)
+    this->m_direction[2] = p_dsAction.m_direction[2];
+
+  if (p_dsAction.m_up[0] != FLT_MAX)
+    this->m_up[0] = p_dsAction.m_up[0];
+  if (p_dsAction.m_up[1] != FLT_MAX)
+    this->m_up[1] = p_dsAction.m_up[1];
+  if (p_dsAction.m_up[2] != FLT_MAX)
+    this->m_up[2] = p_dsAction.m_up[2];
+
+  // TODO
+  if (p_dsAction.m_unk80 &&
+      p_dsAction.m_unk7c &&
+      *p_dsAction.m_unk7c &&
+      !strncmp("XXX", (const char*) p_dsAction.m_unk7c, 3))
+  {
+    delete this->m_unk7c;
+    this->m_unk80 = 0;
+    FUN_100ADE60(p_dsAction.m_unk80, p_dsAction.m_unk7c);
+  }
+}
+
+// OFFSET: LEGO1 0x100ad960
+MxBool MxDSAction::HasId(MxU32 p_objectId)
+{
+  return this->GetObjectId() == p_objectId;
+}
+
+// OFFSET: LEGO1 0x100ada40
+void MxDSAction::SetSomeTimingField(MxLong p_someTimingField)
+{
+  this->m_someTimingField = p_someTimingField;
+}
+
+// OFFSET: LEGO1 0x100ada50
+MxLong MxDSAction::GetSomeTimingField()
+{
+  return this->m_someTimingField;
+}
+
+// OFFSET: LEGO1 0x100adcd0
+MxLong MxDSAction::GetCurrentTime()
+{
+  return Timer()->GetTime() - this->m_someTimingField;
+}
+
+// OFFSET: LEGO1 0x100ade60 STUB
+void MxDSAction::FUN_100ADE60(MxU16 p_length, void *p_data)
+{
+  // TOOD
+}
\ No newline at end of file
diff --git a/LEGO1/mxdsaction.h b/LEGO1/mxdsaction.h
index 10a14365..069986bf 100644
--- a/LEGO1/mxdsaction.h
+++ b/LEGO1/mxdsaction.h
@@ -13,6 +13,9 @@ class MxDSAction : public MxDSObject
   __declspec(dllexport) MxDSAction();
   __declspec(dllexport) virtual ~MxDSAction();
 
+  void CopyFrom(MxDSAction &p_dsAction);
+  MxDSAction &operator=(MxDSAction &p_dsAction);
+
   // OFFSET: LEGO1 0x100ad980
   inline virtual const char *ClassName() const override // vtable+0x0c
   {
@@ -25,21 +28,35 @@ class MxDSAction : public MxDSObject
   {
     return !strcmp(name, MxDSAction::ClassName()) || MxDSObject::IsA(name);
   }
+
+  virtual MxU32 GetSizeOnDisk(); // vtable+18;
+  virtual void Deserialize(char **p_source, MxS16 p_unk24); // vtable+1c;
+  virtual MxLong GetDuration(); // vtable+24;
+  virtual void SetDuration(LONG p_duration); // vtable+28;
+  virtual MxDSAction *Clone(); // vtable+2c;
+  virtual void MergeFrom(MxDSAction &p_dsAction); // vtable+30;
+  virtual MxBool HasId(MxU32 p_objectId); // vtable+34;
+  virtual void SetSomeTimingField(MxLong p_someTimingField); // vtable+38;
+  virtual MxLong GetSomeTimingField(); // vtable+3c;
+  virtual MxLong GetCurrentTime(); // vtable+40;
+
+  void FUN_100ADE60(MxU16 p_length, void *p_data);
+
 private:
-  undefined4 m_unk2c;
+  MxU32 m_sizeOnDisk;
   DWORD m_flags;
   DWORD m_startTime;
-  LONG m_duration;
+  MxLong m_duration;
   MxS32 m_loopCount;
   MxVector3Data m_location;
   MxVector3Data m_direction;
   MxVector3Data m_up;
   undefined4 *m_unk7c;
-  undefined2 m_unk80;
+  MxU16 m_unk80;
   undefined4 m_unk84;
   undefined4 m_unk88;
   MxOmni* m_omni; // 0x8c
-  MxS32 m_someTimingField; // 0x90
+  MxLong m_someTimingField; // 0x90
 };
 
 #endif // MXDSACTION_H
diff --git a/LEGO1/mxdsobject.cpp b/LEGO1/mxdsobject.cpp
index 2b478b88..57663cee 100644
--- a/LEGO1/mxdsobject.cpp
+++ b/LEGO1/mxdsobject.cpp
@@ -13,7 +13,7 @@ MxDSObject::MxDSObject()
   this->m_unk14 = 0;
   this->m_objectName = NULL;
   this->m_unk24 = -1;
-  this->m_unk1c = -1;
+  this->m_objectId = -1;
   this->m_unk28 = 0;
 }
 
@@ -30,7 +30,7 @@ void MxDSObject::CopyFrom(MxDSObject &p_dsObject)
   this->SetSourceName(p_dsObject.m_sourceName);
   this->m_unk14 = p_dsObject.m_unk14;
   this->SetObjectName(p_dsObject.m_objectName);
-  this->m_unk1c = p_dsObject.m_unk1c;
+  this->m_objectId = p_dsObject.m_objectId;
   this->m_unk24 = p_dsObject.m_unk24;
   this->m_atomId = p_dsObject.m_atomId;
   this->m_unk28 = p_dsObject.m_unk28;
@@ -91,39 +91,39 @@ undefined4 MxDSObject::unk14()
 }
 
 // OFFSET: LEGO1 0x100bf9d0
-MxU32 MxDSObject::CalculateUnk08()
+MxU32 MxDSObject::GetSizeOnDisk()
 {
-  MxU32 unk08;
+  MxU32 sizeOnDisk;
 
   if (this->m_sourceName)
-    unk08 = strlen(this->m_sourceName) + 3;
+    sizeOnDisk = strlen(this->m_sourceName) + 3;
   else
-    unk08 = 3;
+    sizeOnDisk = 3;
 
-  unk08 += 4;
+  sizeOnDisk += 4;
 
   if (this->m_objectName)
-    unk08 += strlen(this->m_objectName) + 1;
+    sizeOnDisk += strlen(this->m_objectName) + 1;
   else
-    unk08++;
+    sizeOnDisk++;
 
-  unk08 += 4;
-  this->m_unk08 = unk08;
-  return unk08;
+  sizeOnDisk += 4;
+  this->m_sizeOnDisk = sizeOnDisk;
+  return sizeOnDisk;
 }
 
 // OFFSET: LEGO1 0x100bfa20
-void MxDSObject::Parse(char **p_source, MxS16 p_unk24)
+void MxDSObject::Deserialize(char **p_source, MxS16 p_unk24)
 {
   this->SetSourceName(*p_source);
   *p_source += strlen(this->m_sourceName) + 1;
   this->m_unk14 = *(undefined4*) *p_source;
-  *p_source += 4;
+  *p_source += sizeof(undefined4);
 
   this->SetObjectName(*p_source);
   *p_source += strlen(this->m_objectName) + 1;
-  this->m_unk1c = *(undefined4*) *p_source;
-  *p_source += 4;
+  this->m_objectId = *(MxU32*) *p_source;
+  *p_source += sizeof(MxU32);
 
   this->m_unk24 = p_unk24;
 }
diff --git a/LEGO1/mxdsobject.h b/LEGO1/mxdsobject.h
index a13f382f..5dfc894c 100644
--- a/LEGO1/mxdsobject.h
+++ b/LEGO1/mxdsobject.h
@@ -28,29 +28,28 @@ class MxDSObject : public MxCore
   inline virtual MxBool IsA(const char *name) const override { return !strcmp(name, MxDSObject::ClassName()) || MxCore::IsA(name); }; // vtable+10;
 
   virtual undefined4 unk14(); // vtable+14;
-  virtual MxU32 CalculateUnk08(); // vtable+18;
-  virtual void Parse(char **p_source, MxS16 p_unk24); // vtable+1c;
-
-  inline const MxAtomId& GetAtomId() { return this->m_atomId; }
-  inline undefined4 GetUnknown1c() { return this->m_unk1c; }
-
-  inline void SetUnknown1c(undefined4 p_unk1c) { this->m_unk1c = p_unk1c; }
-  inline void SetUnknown24(MxS16 p_unk24) { this->m_unk24 = p_unk24; }
-
+  virtual MxU32 GetSizeOnDisk(); // vtable+18;
+  virtual void Deserialize(char **p_source, MxS16 p_unk24); // vtable+1c;
   // OFFSET: ISLE 0x401c40
   // OFFSET: LEGO1 0x10005530
-  inline void SetAtomId(MxAtomId p_atomId) { this->m_atomId = p_atomId; }
+  inline virtual void SetAtomId(MxAtomId p_atomId) { this->m_atomId = p_atomId; } // vtable+20;
+
+  inline const MxAtomId& GetAtomId() { return this->m_atomId; }
+  inline MxU32 GetObjectId() { return this->m_objectId; }
+
+  inline void SetObjectId(MxU32 p_objectId) { this->m_objectId = p_objectId; }
+  inline void SetUnknown24(MxS16 p_unk24) { this->m_unk24 = p_unk24; }
 
 protected:
   inline void SetType(MxDSType p_type) { this->m_type = p_type; }
 
 private:
-  MxU32 m_unk08;
+  MxU32 m_sizeOnDisk;
   MxU16 m_type;
   char* m_sourceName;
   undefined4 m_unk14;
   char *m_objectName;
-  undefined4 m_unk1c;
+  MxU32 m_objectId;
   MxAtomId m_atomId;
   MxS16 m_unk24;
   undefined4 m_unk28;
diff --git a/LEGO1/mxvector.h b/LEGO1/mxvector.h
index f5b8e686..e55e8d56 100644
--- a/LEGO1/mxvector.h
+++ b/LEGO1/mxvector.h
@@ -60,6 +60,8 @@ class MxVector2
   virtual void SetVector(MxVector2 *other);
   virtual void SetVector(float *other);
 
+  inline float& operator[](size_t idx) { return m_data[idx]; }
+  inline const float operator[](size_t idx) const { return m_data[idx]; }
 protected:
   float *m_data;
 };