Added ability to replace GTA internal animations.

Modified AddAnimation, AddAnimationAndSync, and CopyAnimation for replacing GTA internal animations with custom animations. We'll need to create our own static association when engineReplaceAnimation is called and use that static association for a specific ped/player to play our custom animation instead.

Author: codenulls

Client/multiplayer_sa/CMultiplayerSA.cpp

@@ -25,6 +25,11 @@
 #include "..\game_sa\CBuildingSA.h"
 #include "..\game_sa\CPedSA.h"
 #include "..\game_sa\common.h"
+#include <../game_sa/CAnimBlendHierarchySA.h> // ---------------- REMOVE THIS LATER
+#include <../game_sa/CAnimBlendStaticAssociationSA.h>
+#include <../game_sa/CAnimBlendAssociationSA.h>
+#include <../game_sa/CAnimBlendAssocGroupSA.h>
+
 extern CCoreInterface* g_pCore;
 extern CMultiplayerSA* pMultiplayer;
 
@@ -155,15 +160,15 @@ DWORD RETURN_CPlantMgr_Render_fail =                        0x5DBDAA;
 #define HOOKPOS_CEventHandler_ComputeKnockOffBikeResponse   0x4BA06F
 DWORD RETURN_CEventHandler_ComputeKnockOffBikeResponse =    0x4BA076;
 
+#define HOOKPOS_CAnimBlendAssocGroup_CopyAnimation          0x4CE130  //  mov     ecx, [ecx+4]
+DWORD RETURN_CAnimBlendAssocGroup_CopyAnimation =           0x4CE158; //  test    esi, esi
+
 #define HOOKPOS_CAnimManager_AddAnimation                   0x4d3aa0
-DWORD RETURN_CAnimManager_AddAnimation =                    0x4D3AAA;
-DWORD RETURN_CAnimManager_AddAnimationEND =                 0x4D3B16;
-DWORD RETURN_CAnimManager_AddAnimation_SkipCopyAnimation =  0x4D3ABC;
+DWORD RETURN_CAnimManager_AddAnimation =                    0x4D3AB1;
+
+#define HOOKPOS_CAnimManager_AddAnimationAndSync            0x4D3B30
+DWORD RETURN_CAnimManager_AddAnimationAndSync =             0x4D3B41;
 
-#define HOOKPOS_CAnimManager_AddAnimationAndSync                  0x4D3B30
-DWORD RETURN_CAnimManager_AddAnimationAndSync =                   0x4D3B3A;
-DWORD RETURN_CAnimManager_AddAnimationAndSyncEND =                0x4D3B9E;
-DWORD RETURN_CAnimManager_AddAnimationAndSync_SkipCopyAnimation = 0x4D3B4C;
 
 #define HOOKPOS_CAnimManager_BlendAnimation_Hierarchy       0x4D4410 //0x4D4425
 DWORD RETURN_CAnimManager_BlendAnimation_Hierarchy =        0x4D4417; //0x4D442D;
@@ -433,6 +438,7 @@ void HOOK_CPlantMgr_Render ();
 void HOOK_CEventHandler_ComputeKnockOffBikeResponse ();
 void HOOK_CAnimManager_AddAnimation ();
 void HOOK_CAnimManager_AddAnimationAndSync ();
+void HOOK_CAnimBlendAssocGroup_CopyAnimation ();
 void HOOK_CAnimManager_BlendAnimation_Hierarchy ();
 void HOOK_CPed_GetWeaponSkill ();
 void HOOK_CPed_AddGogglesModel ();
@@ -641,6 +647,7 @@ void CMultiplayerSA::InitHooks()
     HookInstall(HOOKPOS_CEventHandler_ComputeKnockOffBikeResponse, (DWORD)HOOK_CEventHandler_ComputeKnockOffBikeResponse, 7 );
     HookInstall(HOOKPOS_CAnimManager_AddAnimation, (DWORD)HOOK_CAnimManager_AddAnimation, 10 ); 
     HookInstall(HOOKPOS_CAnimManager_AddAnimationAndSync, (DWORD)HOOK_CAnimManager_AddAnimationAndSync, 10 ); 
+    HookInstall(HOOKPOS_CAnimBlendAssocGroup_CopyAnimation, (DWORD)HOOK_CAnimBlendAssocGroup_CopyAnimation, 6 ); 
     HookInstall(HOOKPOS_CAnimManager_BlendAnimation_Hierarchy, (DWORD)HOOK_CAnimManager_BlendAnimation_Hierarchy, 7 );
     HookInstall(HOOKPOS_CPed_GetWeaponSkill, (DWORD)HOOK_CPed_GetWeaponSkill, 8 );
     HookInstall(HOOKPOS_CPed_AddGogglesModel, (DWORD)HOOK_CPed_AddGogglesModel, 6);
@@ -5340,6 +5347,60 @@ void _declspec(naked) HOOK_CEventHandler_ComputeKnockOffBikeResponse ()
     }
 }
 
+CAnimBlendStaticAssociationSAInterface * getAnimStaticAssociation ( DWORD * pAnimAssocGroup, DWORD AnimID )
+{
+    auto pAnimStaticAssoc = (CAnimBlendStaticAssociationSAInterface *)( pAnimAssocGroup[1] + 20 * (AnimID - pAnimAssocGroup[3]) );
+    //auto pAnimStaticAssoc = (CAnimBlendStaticAssociationSAInterface *)malloc ( sizeof(CAnimBlendStaticAssociationSAInterface));
+
+    return pAnimStaticAssoc;
+}
+
+//CAnimBlendAssocGroupSAInterface * pAnimAssocGroup = nullptr;
+CAnimBlendStaticAssociationSAInterface * pAnimStaticAssoc = nullptr;
+DWORD * pAnimAssocGroup = nullptr;
+DWORD AnimID = 0;
+RpClump * pClump = nullptr;
+void _declspec(naked)  HOOK_CAnimBlendAssocGroup_CopyAnimation ()
+{
+    _asm
+    {
+        mov     pClump, edi
+        
+        mov     eax,  fs:0
+        push    0FFFFFFFFh
+        push    083BCABh
+        push    eax
+        mov     eax, [esp+10h]
+        mov     fs:0, esp
+        mov     edx, [ecx+0Ch]
+
+        mov     pAnimAssocGroup, ecx
+        mov     AnimID, eax
+        pushad
+    }
+
+    pAnimStaticAssoc = getAnimStaticAssociation ( pAnimAssocGroup, AnimID );
+
+    _asm 
+    {
+        popad
+        mov     ecx, [ecx+4]
+        sub     eax, edx
+        push    esi
+        mov     esi, pAnimStaticAssoc
+        jmp     RETURN_CAnimBlendAssocGroup_CopyAnimation
+    }
+}
+
+int _cdecl OnCAnimBlendAssocGroupCopyAnimation ( CAnimBlendAssocGroupSAInterface* pGroup, int iAnimId );
+
+CAnimBlendAssocGroupSAInterface * getAnimAssocGroupInterface ( AssocGroupId animGroup )
+{
+    DWORD * pAnimAssocGroupsArray = reinterpret_cast < DWORD * > ( *(DWORD*)0xb4ea34 );
+    return reinterpret_cast < CAnimBlendAssocGroupSAInterface * > ( pAnimAssocGroupsArray  + 5 * animGroup );
+}
+
+CAnimBlendAssocGroupSAInterface * pAnimAssocGroupInterface = nullptr;
 
 RpClump * animationClump = NULL;
 AssocGroupId animationGroup = 0;
@@ -5357,29 +5418,30 @@ void _declspec(naked) HOOK_CAnimManager_AddAnimation ()
         mov     animationID, eax
         pushad
     }
-    
+  
+    pAnimAssocGroupInterface = getAnimAssocGroupInterface ( animationGroup );
+    animationID = OnCAnimBlendAssocGroupCopyAnimation ( pAnimAssocGroupInterface, animationID );
+
     if ( m_pAddAnimationHandler  )
     {
         pAnimAssociation = m_pAddAnimationHandler ( animationClump, animationGroup, animationID );
-
-        _asm
-        {
-            popad
-            mov     eax, pAnimAssociation
-            jmp     RETURN_CAnimManager_AddAnimationEND
-        } 
     }
 
     _asm
     {
         popad
         mov     eax,dword ptr [esp+0Ch] 
         mov     edx,dword ptr ds:[0B4EA34h] 
+        push    esi
+        push    edi
+        mov     eax, animationID
+        push    eax
+        mov     eax, [esp+14h]
+        mov     edi, animationClump
         jmp     RETURN_CAnimManager_AddAnimation
     }
 }
 
-
 CAnimBlendAssociationSAInterface * pAnimAssociationToSyncWith = nullptr;
 void _declspec(naked) HOOK_CAnimManager_AddAnimationAndSync ()
 {
@@ -5396,29 +5458,29 @@ void _declspec(naked) HOOK_CAnimManager_AddAnimationAndSync ()
         pushad
     }
 
+    pAnimAssocGroupInterface = getAnimAssocGroupInterface ( animationGroup );
+    animationID = OnCAnimBlendAssocGroupCopyAnimation ( pAnimAssocGroupInterface, animationID );
+
     if ( m_pAddAnimationAndSyncHandler  )
     {
         pAnimAssociation = m_pAddAnimationAndSyncHandler ( animationClump, pAnimAssociationToSyncWith, animationGroup, animationID );
-
-        _asm
-        {
-            popad
-            mov     eax, pAnimAssociation
-            jmp     RETURN_CAnimManager_AddAnimationAndSyncEND
-        } 
     }
 
     _asm
     {
         popad
         mov     eax,dword ptr [esp+10h]
         mov     edx,dword ptr ds:[0B4EA34h] 
+        push    esi
+        push    edi
+        mov     eax, animationID
+        push    eax
+        mov     eax, [esp+18h]
+        mov     edi, animationClump
         jmp     RETURN_CAnimManager_AddAnimationAndSync
     }
 }
 
-#include <../game_sa/CAnimBlendHierarchySA.h> // ---------------- REMOVE THIS LATER
-
 CAnimBlendHierarchySAInterface * pAnimHierarchy = nullptr;
 int   flags = 0;
 float animationBlendDelta = 0.0f;
@@ -5442,8 +5504,6 @@ void _declspec(naked) HOOK_CAnimManager_BlendAnimation_Hierarchy ()
         pAnimHierarchy = m_pBlendAnimationHierarchyHandler ( animationClump, pAnimHierarchy, flags, animationBlendDelta );
     }
 
-    printf ("BlendAnimation_Hierarchy_Hook, pAnimHierarchy->usNumSequences: %d\n\n", pAnimHierarchy->usNumSequences);
-
     _asm
     {
         popad