Prevent using items partially used by Rotary Macerator

api/registration.lua

@@ -272,8 +272,9 @@ end
 
 -- \brief Registers Rotary Macerator recipe modifier
 -- \param config table
+-- \param omitPlaceholder bool, for internal use only
 -- \returns nil
-function industrialtest.api.registerRotaryMaceratorModifier(config)
+function industrialtest.api.registerRotaryMaceratorModifier(config,omitPlaceholder)
 	local definition={
 		name=config.name or "",
 		modifier=config.modifier or "",
@@ -282,6 +283,19 @@ function industrialtest.api.registerRotaryMaceratorModifier(config)
 		uses=config.uses or 1,
 		modifierLeftover=config.modifierLeftover
 	}
+
+	if not omitPlaceholder and not config.modifierLeftover and string.len(definition.modifier)>0 then
+		local delimiter,_=string.find(definition.modifier,":")
+		definition.stackLeftover="industrialtest:"..string.sub(definition.modifier,1,delimiter-1).."_"..string.sub(definition.modifier,delimiter+1,-1).."_leftover"
+		industrialtest.api.registerRotaryMaceratorModifier({
+			name=definition.name,
+			modifier=definition.stackLeftover,
+			output=definition.output,
+			time=definition.time,
+			uses=definition.uses
+		},true)
+	end
+
 	industrialtest.api.rotaryMaceratorModifiers[definition.name.." "..config.modifier]=definition
 end
 
@@ -292,3 +306,18 @@ end
 function industrialtest.api.getRotaryMaceratorModifier(name,modifier)
 	return industrialtest.api.rotaryMaceratorModifiers[name.." "..modifier]
 end
+
+minetest.register_on_mods_loaded(function()
+	for _,def in pairs(industrialtest.api.rotaryMaceratorModifiers) do
+		if def.stackLeftover then
+			local leftoverDef=table.copy(minetest.registered_items[def.modifier])
+			leftoverDef.groups=leftoverDef.groups or {}
+			leftoverDef.groups.not_in_creative_inventory=1
+			if industrialtest.mclAvailable then
+				leftoverDef._doc_items_create_entry=false
+			end
+			-- Item name starts with : to prevent name checks, because it seems to fail in on_mods_loaded
+			minetest.register_craftitem(":"..def.stackLeftover,leftoverDef)
+		end
+	end
+end)