Add perceived kwarg to pain_eval math function, apply it in Mind Over Matter

[Standing-Storm]

Summary

Infrastructure "Add perceived kwarg to pain_eval math function, apply it in Mind Over Matter"

Purpose of change

While investigating #72882, I discovered that u_pain() checks the absolute pain the character suffers, not the relative pain they're feeling, taking into account any effects that ameliorate the absolute pain (such as painkillers). That seems like a useful function to be able to check.

Fixes #72882.

Describe the solution

Add a perceived kwarg to the pain_eval function, as suggested by Andrei8l and implemented by Guardian DII. I just uploaded the changes.

In Mind Over Matter, changed the function that disables your powers to check u_pain('type': 'perceived'), not u_pain()

Describe alternatives you've considered

Testing

Followed the reproduction instructions in the above issue: set pain to 50, took 2 codeine, waited 15 minutes. Results--powers were usable even though debug menu showed current pain as 48. When pain 50 was assigned, powers were still unusable.

Also GuardianDII tested it and told me it worked.

Additional context

Thank you GuardianDII for giving me the answer since I've been remodeling the condo over the weekend and haven't had time to look up how kwargs work.

[github-actions]

Auto-requesting reviews from non-collaborators: @andrei8l

[andrei8l]

I think a kwarg for u_pain() would be better. Based on your description, the key would be absolute with the default value true. You can get some code hints from u_proficiency() which recently started using a true/false kwarg.

Cataclysm-DDA/src/math_parser_diag.cpp

Lines 1207 to 1209 in 2c47a81

	if( kwargs.count( "direct" ) != 0 ) {
	direct_val = *kwargs.at( "direct" );
	}

Cataclysm-DDA/src/math_parser_diag.cpp

Line 1214 in 2c47a81

bool const direct = is_true( direct_val.dbl( d ) );