Corrine
147 lines
3.6 KiB
ArmAsm
147 lines
3.6 KiB
ArmAsm
# Currently beta quality, map objects that fade like boxes, and Pioneer's
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# background billboards and elevators still have regular draw distance.
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# TODO: 90% of stuff is included, bring home the last 10%.
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.meta name="Draw Distance"
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.meta description="Extends the draw\ndistance of many\nobjects"
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entry_ptr:
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reloc0:
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.offsetof start
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write_call_func:
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.include WriteCallToCode-59NJ
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start:
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mov eax, 0x41800000 # Environment clip distance mod 16.0f
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mov [0x0097D198], eax # This affects mostly static map objects
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mov [0x0097D19C], eax
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mov [0x00097D1A0], eax
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mov ax, 0x9090
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mov [0x00689BC7], ax # Players draw distance 10000.0f always
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mov eax, 0x41000000 # Use newly acquired skipped branch room
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mov [0x00689BD1], eax # to store our float multiplier
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call patch_func_1 # Floor items
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call patch_func_2 # Whole bunch of stuff, including NPCs
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call patch_func_3 # Duplicate function from above, reuse same hook
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call patch_func_4 # TODO: Which objects this affects?
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call patch_func_5 # TODO: This one too?
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call patch_func_6 # TODO: And this one?
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ret
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# Floor items
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patch_func_1:
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pop ecx
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push 8
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push 0x005C525B
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call get_code_size1
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.deltaof patch_code1, patch_code_end1
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get_code_size1:
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pop eax
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push dword [eax]
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call patch_code_end1
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patch_code1:
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mov edx, [esp + 0x18]
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fld st0, dword [0x00689BD1]
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fld st0, dword [esp + 0x14]
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fmulp st1, st0
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ret
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patch_code_end1:
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push ecx
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jmp write_call_func
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# Whole bunch of stuff, including NPCs
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patch_func_2:
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pop ecx
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push 9
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push 0x007BB21E
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call get_code_size2
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.deltaof patch_code2, patch_code_end2
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get_code_size2:
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pop eax
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push dword [eax]
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call patch_code_end2
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patch_code2:
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test eax, 0x400
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fld st0, dword [0x00689BD1]
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fld st0, dword [esp + 0x2C]
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fmulp st1, st0
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ret
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patch_code_end2:
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push ecx
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jmp write_call_func
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# Duplicate function from above, reuse same hook
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patch_func_3:
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mov eax, dword [0x007BB21F]
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add eax, 0x002A1C74
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mov dword [0x00518843], eax
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mov byte [0x00518842], 0xE8
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mov dword [0x00518847], 0x90909090
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ret
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# TOComputerMachine01
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patch_func_4:
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pop ecx
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push 7
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push 0x00616FF4
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call get_code_size4
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.deltaof patch_code4, patch_code_end4
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get_code_size4:
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pop eax
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push dword [eax]
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call patch_code_end4
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patch_code4:
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lea edx, [edi + 0x38]
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fld st0, dword [0x00689BD1]
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fld st0, dword [esp + 0x14]
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fmulp st1, st0
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ret
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patch_code_end4:
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push ecx
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jmp write_call_func
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# TObjCamera
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patch_func_5:
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pop ecx
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push 6
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push 0x006439A8
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call get_code_size5
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.deltaof patch_code5, patch_code_end5
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get_code_size5:
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pop eax
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push dword [eax]
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call patch_code_end5
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patch_code5:
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fld st0, dword [0x00689BD1]
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fld st0, dword [esp + 0x28]
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fmulp st1, st0
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fchs st0
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ret
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patch_code_end5:
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push ecx
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jmp write_call_func
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# TODO: And this one?
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patch_func_6:
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pop ecx
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push 6
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push 0x0065B959
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call get_code_size6
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.deltaof patch_code6, patch_code_end6
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get_code_size6:
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pop eax
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push dword [eax]
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call patch_code_end6
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patch_code6:
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mov ebp, ecx
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fld st0, dword [0x00689BD1]
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fld st0, dword [esp + 0x30]
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fmulp st1, st0
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ret
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patch_code_end6:
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push ecx
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jmp write_call_func
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