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gokuta

GET object visibility

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gokuta
Posted (edited)

This opcode

0750: set_object [email protected] visibility true

need an opcode for checking whether object is visible. Something like this

7FFF: get_object [email protected] visibility

Anybody knowns memory address I can check? Thanks

Edited by gokuta

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Jack

If we assume that the object handle is stored in [email protected] then:

0A98: [email protected] = object [email protected] struct
[email protected] += 0x1C  //  entityFlags    
0A8D: [email protected] = read_memory [email protected] size 1 virtual_protect 0
if [email protected] == 5
then
    //  object is invisible
else
    //  object is visible   ([email protected] <> 5 ---> [email protected] == 0x85)  
end

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Wesser

You shall never compare flags against a constant without a bitwise-AND test. Use IS_LOCAL_VAR_BIT_SET_CONST (2231) command and pass the 0-based index of the 8th bit.

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gokuta
Posted (edited)

This is what I was thinking about... since the change in other bits will result in different integral value. And yet the bit of interest does not change in any way

Edited by gokuta

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Jack
1 hour ago, Wesser said:

You shall never compare flags against a constant without a bitwise-AND test. Use IS_LOCAL_VAR_BIT_SET_CONST (2231) command and pass the 0-based index of the 8th bit.

Does the bit 0 count as well? Like this:

0A98: [email protected] = object [email protected] struct
[email protected] += 0x1C  //  entityFlags    
0A8D: [email protected] = read_memory [email protected] size 1 virtual_protect 0
if 08B7:   test [email protected] bit 7
then  

end


???

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gokuta

Well, he said "zero based index", which makes zero count I believe. So.. which bit should I test :D which one

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gokuta

alright, me lil' testin' shows the last bit is what matters

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