Changeset 1008

Timestamp:

Aug 26, 2014, 1:21:09 AM (10 years ago)

Author:

alloc

Message:

Daodan 3.9: Added AI awareness patch (fixes #36)

Location:

Daodan/src

Files:

• Daodan_Config.c (modified) (1 diff)
• Daodan_Patch.c (modified) (1 diff)
• Daodan_Patch.h (modified) (1 diff)
• Patches/Patches.c (modified) (2 diffs)
• _Version.h (modified) (1 diff)

Daodan/src/Daodan_Config.c

@@ -48 +48 @@
         } },
         { "gameplay", "Gameplay", {
+                { "characterawareness",
+                        "Makes AI remember the player.",
+                        C_BOOL,
+                        {.intBoolVal = true},
+                        {.intBoolVal = true} },
                 { "cheatsenabled",
                         "Enables cheats without having to beat the game first.",

Daodan/src/Daodan_Patch.c

@@ -242 +242 @@
 }
 
+void* DDrPatch_ExecutableASM(char* from, char* nextInst, const unsigned char* code, int length)
+{
+        char* newCode = malloc(length+5);
+        if (!DDrPatch_NOOP(newCode, length+5))
+                return (void*)-1;
+
+        memcpy(newCode, code, length);
+        if (!DDrPatch_MakeJump(&newCode[length], nextInst))
+                return (void*)-1;
+
+        DWORD oldp;
+        if (!VirtualProtect(newCode, length+5, PAGE_EXECUTE_READWRITE, &oldp)) {
+                STARTUPMESSAGE("ExecASM: Could not mark page for new code as executable: from address 0x%08x", from);
+                return (void*)-1;
+        }
+        
+        if (!DDrPatch_MakeJump(from, newCode))
+                return (void*)-1;
+
+        return newCode;
+}
 
 void DDrPatch_PrintDisasm(void* addr, int instLimit, int sizeLimit)

Daodan/src/Daodan_Patch.h

@@ -16 +16 @@
 bool DDrPatch_Int16(short* dest, unsigned short value);
 bool DDrPatch_NOOP(char* dest, unsigned int length);
+void* DDrPatch_ExecutableASM(char* from, char* nextInst, const unsigned char* code, int length);
 
 void DDrPatch_PrintDisasm(void* addr, int instLimit, int sizeLimit);

Daodan/src/Patches/Patches.c

@@ -278 +278 @@
 
 
-
+void DD_Patch_CharacterAwareness()
+{
+        const unsigned char patch[] =
+        {
+                0x52,                           //  0: push   edx
+                0xBA, 0xA0, 0x16, 0x00, 0x00,   //  1: mov    edx,0x16a0
+                0x89, 0xF8,                     //  6: mov    eax,edi
+                0xF7, 0xE2,                     //  8: mul    edx
+                0x89, 0xC2,                     //  a: mov    edx,eax
+                0xE8, 0x00, 0x00, 0x00, 0x00,   //  c: call   ONrGameState_LivingCharacterList_Get (-> OniExe + 0x000fca90)
+                0x8B, 0x00,                     // 11: mov    eax,[eax]
+                0x01, 0xD0,                     // 13: add    eax,edx
+                0x89, 0xC6,                     // 15: mov    esi,eax
+                0x5A,                           // 17: pop    edx 
+                0x8B, 0x46, 0x04,               // 18: (ORIG) mov        eax, dword [ds:esi+0x4]
+                0xF6, 0xC4, 0x80                // 1b: (ORIG) test       ah, 0x80
+        };
+        void* newCode = DDrPatch_ExecutableASM((char*)(OniExe + 0x0009A609), (char*)(OniExe + 0x0009A60F), patch, sizeof(patch));
+        if ((int)newCode > 0) {
+                DDrPatch_MakeCall((char*)(newCode+0xC), (char*)(OniExe + 0x000FCA90));
+                DDrPatch_NOOP((char*)(OniExe + 0x0009A60E), 1);
+        }
+}
 
 
@@ -321 +343 @@
         if (DDrConfig_GetOptOfType("modding.d_regen", C_BOOL)->value.intBoolVal)
                 DD_Patch_Regeneration();
+
+        if (DDrConfig_GetOptOfType("gameplay.characterawareness", C_BOOL)->value.intBoolVal)
+                DD_Patch_CharacterAwareness();
 
         // Cheats always enabled

Daodan/src/_Version.h

@@ -6 +6 @@
 
 #define DAODAN_VERSION_MAJOR 3
-#define DAODAN_VERSION_MINOR 8
+#define DAODAN_VERSION_MINOR 9
 #define DAODAN_VERSION_STRING STRINGIZE(DAODAN_VERSION_MAJOR) "." STRINGIZE(DAODAN_VERSION_MINOR)