GET object visibility

[gokuta]

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 July 23, 2020 by gokuta

[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

[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.

[gokuta]

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 July 24, 2020 by gokuta

[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

???

[gokuta]

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

[gokuta]

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