Overriding the trapping grounds component to add a critter, multiple mods safe variant

server_init.lua

function MyMod:_on_init()
	local component = radiant.mods.require('stonehearth.components.trapping_grounds_component.trapping_ground_component')
	
	local old_initialize = component.initialize
	function component:initialize(...)
		local ret = { old_initialize(self, ...) }
		
		self._spawnable_critters = self._spawnable_critters or { 'stonehearth:rabbit', 'stonehearth:racoon', 'stonehearth:red_fox', 'stonehearth:squirrel' }
		
		table.insert(self._spawnable_critters, 'my_mod:some_critter')
		
		return unpack(ret)
	end
	
	function component:_choose_spawned_critter_type()
		return self._spawnable_critters[rng:get_int(1, #self._spawnable_critters)]
	end
end
	
radiant.events.listen(radiant, 'radiant:required_loaded', MyMod, MyMod._on_init)