Add Very Hard / Brutal AI difficulty

Author: Rampastring

src/extra_difficulty.asm

@@ -9,11 +9,13 @@
 section .bss
     UltimatelyEasyDifficultyData RESB 80
     ExtremelyEasyDifficultyData RESB 80
+    BrutallyEasyDifficultyData RESB 80
     VeryEasyDifficultyData RESB 80
     AINormalDifficultyData RESB 80
 
 sstring str_UltimatelyEasy, "UltimatelyEasy"
 sstring str_ExtremelyEasy, "ExtremelyEasy"
+sstring str_BrutallyEasy, "BrutallyEasy"
 sstring str_VeryEasy, "VeryEasy"
 sstring str_AINormal, "AINormal"
 sstring str_Easy, "Easy"
@@ -31,6 +33,11 @@ hack 0x005CE198
     mov  edx, ExtremelyEasyDifficultyData
     call 0x005CE1E0 ; Difficulty_Get(CCINIClass & ini, DifficultyClass & diff, char const * section)
 
+    push str_BrutallyEasy
+    mov  ecx, edi   ; CCINIClass pointer
+    mov  edx, BrutallyEasyDifficultyData
+    call 0x005CE1E0 ; Difficulty_Get(CCINIClass & ini, DifficultyClass & diff, char const * section)
+
     push str_VeryEasy
     mov  ecx, edi   ; CCINIClass pointer
     mov  edx, VeryEasyDifficultyData
@@ -194,10 +201,12 @@ hack 0x004BB479
     ; Check if the requested difficulty type matches any the difficulty
     ; values that we should process
     ; (5 = Ultimately Easy, 4 = Extremely Easy, 3 = Very Easy, 1 = AINormal only if the house is an AI house)
-    cmp  edi, 5
+    cmp  edi, 6
     je   .Ultimately_Easy_Diff
-    cmp  edi, 4
+    cmp  edi, 5
     je   .Extremely_Easy_Diff
+    cmp  edi, 4
+    je   .Brutally_Easy_Diff
     cmp  edi, 3
     je   .Very_Easy_Diff
     cmp  edi, 1
@@ -226,6 +235,17 @@ hack 0x004BB479
     mov  edi, 0            ; Hard difficulty
     jmp  0x004BB654        ; let the original game code handle the rest
 
+.Brutally_Easy_Diff:
+    ; Set the 'difficulty index' of the house to 0 (Hard AI)
+    mov  dword [ecx+58h], 0
+
+    ; This difficulty level can only show up in MP
+    Set_Difficulty_Modifiers_Multiplayer BrutallyEasyDifficultyData
+
+    mov  eax, [0x0074C488] ; RulesClass pointer
+    mov  edi, 0            ; Hard difficulty
+    jmp  0x004BB654        ; let the original game code handle the rest
+
 .Very_Easy_Diff:
 
     ; Set the 'difficulty index' of the house to 0 (Hard AI)

src/spawner/spawner.asm

@@ -202,6 +202,7 @@ section .rdata
     str_HardAI          db "Hard AI",0
     str_MediumAI        db "Medium AI",0
     str_EasyAI          db "Easy AI",0
+    str_VeryHardAI      db "Very Hard AI",0
     str_BrutalAI        db "Brutal AI",0
     str_ExtremeAI       db "Extreme AI",0
     str_UltimateAI      db "Ultimate AI",0
@@ -491,10 +492,12 @@ _Assign_Houses_AI_Player_Names:
     cmp  ecx, 2
     je   .Easy_AI
     cmp  ecx, 3
-    je   .Brutal_AI
+    je   .Very_Hard_AI
     cmp  ecx, 4
-    je   .Extreme_AI
+    je   .Brutal_AI
     cmp  ecx, 5
+    je   .Extreme_AI
+    cmp  ecx, 6
     je   .Ultimate_AI
     jmp  .Original_Code
 
@@ -507,6 +510,9 @@ _Assign_Houses_AI_Player_Names:
 .Easy_AI:
     mov  eax, str_EasyAI
     jmp  .Assign_AI_Player_Name
+.Very_Hard_AI:
+    mov  eax, str_VeryHardAI
+    jmp  .Assign_AI_Player_Name
 .Brutal_AI:
     mov  eax, str_BrutalAI
     jmp  .Assign_AI_Player_Name