hoi4-mtth

name	hoi4-mtth
description	Define and use HOI4 MTTH variables safely (base/modifiers, file-scoped constants, and mtth:entry usage in set_variable/set_temp_variable) with guidance for minimizing ai_will_do clutter.

HOI4 MTTH Variables

Scope and References

Use MTTH variables to compute a value from a base plus modifiers, then inject that value into other logic.

Read first to see how Chaos Redux already implements them:

• C:/Users/klimp/OneDrive/Documents/Paradox Interactive/Hearts of Iron IV/mod/chaos_redux/common/mtth/chaosx_mtth_variables.txt

Defining an MTTH entry

Create entries in common/mtth/*.txt:

example_mtth_value = {
	base = 50

	modifier = {
		factor = 0.8
		tag = GER
	}
	modifier = {
		add = 25
		has_war = yes
	}
}

Notes:

• base is the starting value.
• modifier blocks use factor or add and standard triggers.

Using an MTTH entry

Vanilla example pattern:

set_variable = { my_value = mtth:example_mtth_value }

Typical usage:

• set_variable or set_temp_variable to store the computed MTTH value.
• Use the variable later (add = temp, check_variable = { temp > 1 }, etc.).

AI weights with MTTH

To reduce ai_will_do clutter, compute the full weight in MTTH and inject it:

ai_will_do = {
	factor = 0
	modifier = {
		set_temp_variable = { temp = mtth:chem_ai_weight }
		add = temp
	}
}