Advanced Hacking FAQ
- Thread starter RuneLancer
- Start date
Mar 16, 2009 at 11:26 PM
Join Date: Jan 21, 2006
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Q for hackers...
Is it possible to have the missile launcher and the monsters never drop missiles? I know i could achieve this by changing all monster energy triangle drops to 0 on npc.tbl... but screw that... Does anyone have a better way.
Is it possible to have the missile launcher and the monsters never drop missiles? I know i could achieve this by changing all monster energy triangle drops to 0 on npc.tbl... but screw that... Does anyone have a better way.
Mar 16, 2009 at 11:36 PM
Join Date: Jan 4, 2008
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well, a flag(not tsc, but intrernal) is obviously set when the ml is recieved, it's just a matter of finding where that is set, and making it not set. I have homework now though, so...
Mar 18, 2009 at 2:11 AM
Join Date: Jun 22, 2008
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Lace said:
Thank you, this has been very helpful. Just one question: when I see [EAX+1C] and [ECX+1C] are those referring to the same place? Looking at some of the code I am guessing that it does, but I wanted to be sure.
Mar 18, 2009 at 7:56 PM
Join Date: Jan 4, 2008
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no, it doesn't, unless eax and ecx contain the same value, they are completely different registers (variables), and therefore store different things most of the time.
Mar 18, 2009 at 10:43 PM
Join Date: Jun 22, 2008
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Code:
00404D5E |. 8B48 1C MOV ECX, [EAX+1C] ; Move velocity [EAX+1C] to ECX
00404D61 |. 83E9 00 SUB ECX,0 ; Add to the downwards velocity of the fireball
00404D64 |. 8B55 08 MOV EDX, [EBP+8]
00404D67 |. 894A 1C MOV [EDX+1C],ECX ; MOV downwards velocity to [EDX+1C]
00404D6A |. 8B45 08 MOV EAX, [EBP+8]
00404D6D 8178 1C FF030000 CMP [EAX+1C],3FF ; Compare velocity of fireball to 3FF
00404D74 |. 7E 0A JLE SHORT Doukutsu.00404D80 ; If greater than 3FF,
00404D76 |. 8B4D 08 MOV ECX, [EBP+8]
00404D79 C741 1C FF030000 MOV [ECX+1C],3FF ; Set velocity to 3FFThat is the code around the fireball that you mentioned earlier, and as you can see in my comments, it looks to me like this is setting the maximum speed of the fireball to 3FF by comparing it with 3FF and if it is not less (ie if it is greater) then setting it to 3FF, but changing the 3FF to something else doesn't change the speed (as far as I can tell it doesn't change anything at all) what am I doing wrong?
Also, why is [EBP+8] MOV'ed somewhere in every other instruction?