Morale overflow bug (above 32767)

how Morale works; support/discussion/questions

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Morale overflow bug (above 32767)

Post by thunderchero » Sat Apr 05, 2014 1:19 pm

Hi Everyone,

I found this one in general chat archive and thought it should be in index.

here is original topic

viewtopic.php?f=20&t=1193
Spocks-cuddly-tribble wrote:
henka wrote:the problem is probably caused by the calculation of the average morale, which is displayed in the intel empire screen (...) for the sum calculation a signed 2 byte value is used, which can only hold a maximum positiv value of 32767.
Well, then let's fix this nasty overflow:


I think I see the problem. This should be fully operative:

Code: Select all

trek.exe at 0x60581

change:
8B 14 24 8D 83 40 02 00 00 01 D0 66 03 78 44
to:
8D 83 40 02 00 00 03 04 24 0F B7 40 44 03 F8

AND at 0x605C2 change: 0F BF to: 90 8B


asm 461181:
lea     eax, [ebx+240h]
add     eax, [esp]
movzx   eax, word ptr [eax+44h]
add     edi, eax

asm 4611C2: 
nop
mov   edx, edi

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