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How to perform an action when a known instruction is called?

 
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Pscyking
How do I cheat?
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Joined: 18 Jan 2022
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PostPosted: Tue Jan 18, 2022 11:25 am    Post subject: How to perform an action when a known instruction is called? Reply with quote
In the campaign of Total War: Warhammer 2, whenever you initiate diplomacy with an AI faction, an instruction is called that copies the value of the faction's current wealth into a register:

Code:
Warhammer2.EMPIRECAMPAIGN::FACTION_ECONOMICS::treasury
8B 81 20090000        mov eax,[rcx+00000920]


Let's say I create a table entry called SelectedFactionWealth to store a pointer to the 4-Byte treasury value of the most recently viewed faction. How can I hook into the instruction so that every time it gets called, it sets my pointer to the source address (rcx+920)?

I'm new to CE, assembly and lua, so while I am working through the tutorials and docs, I've not yet come across a solution for this. Even if someone could just point me to relevant documentation, I'd be happy to work it out from there. Thanks!
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TheyCallMeTim13
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PostPosted: Tue Jan 18, 2022 11:54 am    Post subject: Reply with quote
Loop up code injection copy.
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Pscyking
How do I cheat?
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Joined: 18 Jan 2022
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PostPosted: Tue Jan 18, 2022 12:04 pm    Post subject: Reply with quote
Exactly what I need; thanks!
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