Refactor base for simple electric item processors

init.lua

@@ -43,6 +43,7 @@ dofile(modpath.."/machines/machine.lua")
 dofile(modpath.."/machines/activated_machine.lua")
 dofile(modpath.."/machines/electric_machine.lua")
 dofile(modpath.."/machines/activated_electric_machine.lua")
+dofile(modpath.."/machines/simple_electric_item_processor.lua")
 dofile(modpath.."/machines/canning_machine.lua")
 dofile(modpath.."/machines/chargepad.lua")
 dofile(modpath.."/machines/compressor.lua")

machines/common.lua

@@ -15,7 +15,6 @@
 -- along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 local machine={}
-local simpleElectricItemProcessor={}
 
 industrialtest.internal.mclAfterDigNode=function(pos,oldmeta,lists)
 	-- Taken from https://git.minetest.land/MineClone2/MineClone2/src/branch/master/mods/ITEMS/mcl_furnaces/init.lua#L538
@@ -159,346 +158,3 @@ function industrialtest.internal.registerMachine(config)
 	end
 	industrialtest.api.addTag("industrialtest:"..config.name,"usesTimer")
 end
-
-local function craftResultProxy(method,item)
-	if method=="cooking" then
-		local output,after=minetest.get_craft_result({
-			method=method,
-			width=1,
-			items={item}
-		})
-		return {
-			item=output.item,
-			time=output.time,
-			src=after.items[1]
-		}
-	elseif method=="industrialtest.macerating" then
-		local output=industrialtest.api.getMaceratorRecipeResult(item:get_name())
-		if not output then
-			return {
-				item=ItemStack(),
-				time=0,
-				src=item
-			}
-		end
-		local srcAfter=ItemStack(item:get_name())
-		srcAfter:set_count(item:get_count()-1)
-		return {
-			item=ItemStack(output.output),
-			time=output.time,
-			src=srcAfter
-		}
-	elseif method=="industrialtest.compressing" then
-		local output=industrialtest.api.getCompressorRecipeResult(item:get_name())
-		if not output or item:get_count()<output.count then
-			return {
-				item=ItemStack(),
-				time=0,
-				src=item
-			}
-		end
-		local srcAfter=ItemStack(item:get_name())
-		srcAfter:set_count(item:get_count()-output.count)
-		return {
-			item=ItemStack(output.output),
-			time=output.time,
-			src=srcAfter
-		}
-	elseif method=="industrialtest.extracting" then
-		local output=industrialtest.api.getExtractorRecipeResult(item:get_name())
-		if not output then
-			return {
-				item=ItemStack(),
-				time=0,
-				src=item
-			}
-		end
-		local srcAfter=ItemStack(item:get_name())
-		srcAfter:set_count(item:get_count()-1)
-		return {
-			item=ItemStack(output.output),
-			time=output.time,
-			src=srcAfter
-		}
-	elseif method=="industrialtest.recycling" then
-		local srcAfter=ItemStack(item:get_name())
-		srcAfter:set_count(item:get_count()-1)
-		return {
-			item=ItemStack(industrialtest.random:next(1,8)==1 and "industrialtest:scrap" or ""),
-			time=2,
-			src=srcAfter
-		}
-	elseif method=="industrialtest.cable_forming" then
-		local output=industrialtest.api.getCableFormerRecipeResult(item:get_name())
-		if not output then
-			return {
-				item=ItemStack(),
-				time=0,
-				src=item
-			}
-		end
-		local srcAfter=ItemStack(item:get_name())
-		srcAfter:set_count(item:get_count()-1)
-		return {
-			item=ItemStack(output.output),
-			time=output.time,
-			src=srcAfter
-		}
-	elseif method=="industrialtest.mass_fabricating" then
-		if item:get_count()<34 then
-			return {
-				item=ItemStack(),
-				time=0,
-				src=item
-			}
-		end
-		local srcAfter=ItemStack(item:get_name())
-		srcAfter:set_count(item:get_count()-34)
-		return {
-			item=ItemStack("industrialtest:uu_matter"),
-			time=15,
-			src=srcAfter
-		}
-	end
-	error("Unknown craft method passed to craftResultProxy")
-end
-
-simpleElectricItemProcessor.getFormspec=function(pos)
-	local meta=minetest.get_meta(pos)
-	local powerPercent=meta:get_int("industrialtest.powerAmount")/meta:get_int("industrialtest.powerCapacity")*100
-	local srcPercent=meta:get_float("srcTime")/meta:get_float("maxSrcTime")*100
-	local formspec={
-		"list[context;src;3.4,1.8;1,1]",
-		industrialtest.internal.getItemSlotBg(3.4,1.8,1,1),
-		(powerPercent>0 and "image[3.4,2.8;1,1;industrialtest_gui_electricity_bg.png^[lowpart:"..powerPercent..":industrialtest_gui_electricity_fg.png]"
-		 or "image[3.4,2.8;1,1;industrialtest_gui_electricity_bg.png]"),
-		"list[context;powerStorage;3.4,3.9;1,1]",
-		industrialtest.internal.getItemSlotBg(3.4,3.9,1,1),
-		(srcPercent>0 and "image[4.9,2.8;1,1;gui_furnace_arrow_bg.png^[lowpart:"..srcPercent..":gui_furnace_arrow_fg.png^[transformR270]"
-		 or "image[4.9,2.8;1,1;gui_furnace_arrow_bg.png^[transformR270]"),
-		"list[context;dst;6.4,2.8;1,1]",
-		industrialtest.internal.getItemSlotBg(6.4,2.8,1,1),
-		"list[context;upgrades;9,0.9;1,4]",
-		industrialtest.internal.getItemSlotBg(9,0.9,1,4),
-		"listring[context;src]",
-		"listring[context;dst]"
-	}
-	return table.concat(formspec,"")
-end
-
-simpleElectricItemProcessor.onPowerFlow=function(pos)
-	-- FIXME: this probably will require refactor so node timer won't be started
-	-- just to test if machine can process item
-	minetest.get_node_timer(pos):start(industrialtest.updateDelay)
-end
-
-simpleElectricItemProcessor.onConstruct=function(pos,meta,inv)
-	inv:set_size("src",1)
-	inv:set_size("dst",1)
-	inv:set_size("powerStorage",1)
-	inv:set_size("upgrades",4)
-	meta:set_float("srcTime",-1)
-	meta:set_float("maxSrcTime",0)
-end
-
-simpleElectricItemProcessor.onTimer=function(pos,elapsed,meta,inv,config)
-	local srcSlot=inv:get_stack("src",1)
-	local powerStorageSlot=inv:get_stack("powerStorage",1)
-	local shouldUpdateFormspec=false
-	local shouldRerunTimer=false
-	local requiredPower=elapsed*config.opPower*industrialtest.api.getMachineSpeed(meta)
-
-	shouldRerunTimer,shouldUpdateFormspec=industrialtest.internal.chargeFromPowerStorageItem(meta,inv)
-
-	if srcSlot:get_count()>0 and meta:get_int("industrialtest.powerAmount")>=requiredPower then
-		local output=craftResultProxy(config.method,srcSlot)
-		if output.time>0 and inv:room_for_item("dst",output.item) then
-			if meta:get_float("maxSrcTime")<=0 then
-				meta:set_float("srcTime",0)
-				meta:set_float("maxSrcTime",output.time*config.efficiency)
-			end
-			minetest.swap_node(pos,{
-				name="industrialtest:"..config.name.."_active",
-				param2=minetest.get_node(pos).param2
-			})
-			minetest.get_node_timer(pos):start(industrialtest.updateDelay)
-		end
-	end
-	return shouldRerunTimer,shouldUpdateFormspec
-end
-
-simpleElectricItemProcessor.allowMetadataInventoryMove=function(pos,fromList,fromIndex,toList,count)
-	if toList=="dst" then
-		return 0
-	elseif toList=="upgrades" then
-		-- TODO: Add support for upgrades when they will be added
-		return 0
-	end
-	return count
-end
-
-simpleElectricItemProcessor.allowMetadataInventoryPut=function(pos,listname,index,stack)
-	if listname=="dst" then
-		return 0
-	elseif listname=="src" then
-		local meta=minetest.get_meta(pos)
-		local inv=meta:get_inventory()
-		local srcSlot=inv:get_stack("src",1)
-		if srcSlot:get_name()~=stack:get_name() then
-			meta:set_float("srcTime",-1)
-			meta:set_float("maxSrcTime",0)
-		end
-	elseif listname=="upgrades" then
-		--TODO: See allow_metadata_inventory_move
-		return 0
-	end
-	return stack:get_count()
-end
-
-simpleElectricItemProcessor.onMetadataInventoryPut=function(pos)
-	minetest.get_node_timer(pos):start(industrialtest.updateDelay)
-end
-
-simpleElectricItemProcessor.onMetadataInventoryMove=function(pos,fromList,fromIndex,toList,toIndex,count)
-	local meta=minetest.get_meta(pos)
-	local inv=meta:get_inventory()
-	local srcSlot=inv:get_stack("src",1)
-	local dstSlot=inv:get_stack("dst",1)
-	if fromList=="src" and count==srcSlot:get_count() then
-		meta:set_float("srcTime",-1)
-		meta:set_float("maxSrcTime",0)
-		if meta:get_int("industrialtest.powerAmount")>0 then
-			meta:set_string("formspec",simpleElectricItemProcessor.getFormspec(pos))
-		end
-	elseif fromList=="dst" and dstSlot:get_free_space()>0 then
-		minetest.get_node_timer(pos):start(industrialtest.updateDelay)
-	end
-end
-
-simpleElectricItemProcessor.onMetadataInventoryTake=function(pos,listname,index,stack)
-	local meta=minetest.get_meta(pos)
-	local inv=meta:get_inventory()
-	local srcSlot=inv:get_stack("src",1)
-	local dstSlot=inv:get_stack("dst",1)
-	if listname=="src" and stack:get_count()==srcSlot:get_count() then
-		meta:set_float("srcTime",-1)
-		meta:set_float("maxSrcTime",0)
-		if meta:get_int("industrialtest.powerAmount")>0 then
-			meta:set_string("formspec",simpleElectricItemProcessor.getFormspec(pos))
-		end
-	elseif listname=="dst" and dstSlot:get_free_space()>0 then
-		minetest.get_node_timer(pos):start(industrialtest.updateDelay)
-	end
-end
-
-simpleElectricItemProcessor.activeOnTimer=function(pos,elapsed,meta,inv,config)
-	local srcSlot=inv:get_stack("src",1)
-	local powerStorageSlot=inv:get_stack("powerStorage",1)
-	local shouldUpdateFormspec=false
-	local shouldRerunTimer=false
-	local requiredPower=elapsed*config.opPower*industrialtest.api.getMachineSpeed(meta)
-
-	shouldRerunTimer,shouldUpdateFormspec=industrialtest.internal.chargeFromPowerStorageItem(meta,inv)
-
-	if srcSlot:get_count()>0 and meta:get_float("maxSrcTime")<=0 and meta:get_int("industrialtest.powerAmount")>=requiredPower then
-		local output=craftResultProxy(config.method,srcSlot)
-		if output.time>0 and inv:room_for_item("dst",output.item) then
-			meta:set_float("srcTime",0)
-			meta:set_float("maxSrcTime",output.time*config.efficiency)
-		end
-	end
-	if srcSlot:get_count()==0 and meta:get_float("maxSrcTime")>0 then
-		meta:set_float("srcTime",-1)
-		meta:set_float("maxSrcTime",0)
-		shouldUpdateFormspec=true
-	end
-	if meta:get_float("maxSrcTime")>0 then
-		if meta:get_int("industrialtest.powerAmount")>=requiredPower then
-			meta:set_int("industrialtest.powerAmount",meta:get_int("industrialtest.powerAmount")-requiredPower)
-			meta:set_float("srcTime",meta:get_float("srcTime")+elapsed)
-			shouldRerunTimer=true
-		end
-		shouldUpdateFormspec=true
-	end
-	if meta:get_float("maxSrcTime")<=0 or meta:get_int("industrialtest.powerAmount")<requiredPower then
-		minetest.swap_node(pos,{
-			name="industrialtest:"..config.name,
-			param2=minetest.get_node(pos).param2
-		})
-		minetest.get_node_timer(pos):start(industrialtest.updateDelay)
-	end
-	if meta:get_float("srcTime")>=meta:get_float("maxSrcTime") then
-		local output=craftResultProxy(config.method,srcSlot)
-		local speed=industrialtest.api.getMachineSpeed(meta)
-		local usedItems=srcSlot:get_count()-output.src:get_count()
-		local multiplier=1
-		if srcSlot:get_count()>=speed*usedItems then
-			multiplier=speed
-		end
-		if output.item:get_count()>0 then
-			output.item:set_count(output.item:get_count()*multiplier)
-			inv:add_item("dst",output.item)
-			meta:set_float("srcTime",-1)
-			meta:set_float("maxSrcTime",0)
-		end
-		srcSlot:set_count(srcSlot:get_count()-multiplier*usedItems)
-		inv:set_stack("src",1,srcSlot)
-	end
-	return shouldRerunTimer,shouldUpdateFormspec
-end
-
-function industrialtest.internal.registerSimpleElectricItemProcessor(config)
-	local machineBlockTexture=config.machineBlockTexture or "industrialtest_machine_block.png"
-	industrialtest.internal.registerMachine({
-		name=config.name,
-		displayName=config.displayName,
-		capacity=config.capacity,
-		getFormspec=simpleElectricItemProcessor.getFormspec,
-		flow=config.flow,
-		ioConfig="iiiiii",
-		requiresWrench=config.requiresWrench,
-		registerActiveVariant=true,
-		sounds="metal",
-		powerSlots={"powerStorage"},
-		storageSlots={"src","dst","powerStorage","upgrades"},
-		groups={
-			_industrialtest_hasPowerInput=1
-		},
-		customKeys={
-			tiles={
-				machineBlockTexture..(config.customTopTexture and "^industrialtest_"..config.name.."_top.png" or ""),
-				machineBlockTexture..(config.customBottomTexture and "^industrialtest_"..config.name.."_bottom.png" or ""),
-				machineBlockTexture..(config.customRightTexture and "^industrialtest_"..config.name.."_right.png" or ""),
-				machineBlockTexture..(config.customLeftTexture and "^industrialtest_"..config.name.."_left.png" or ""),
-				machineBlockTexture..(config.customBackTexture and "^industrialtest_"..config.name.."_back.png" or ""),
-				machineBlockTexture..(config.customFrontTexture and "^industrialtest_"..config.name.."_front.png" or "")
-			},
-			paramtype2="facedir",
-			legacy_facedir_simple=true,
-			_industrialtest_onPowerFlow=simpleElectricItemProcessor.onPowerFlow
-		},
-		activeCustomKeys={
-			tiles={
-				machineBlockTexture..(config.customTopTexture and "^industrialtest_"..config.name.."_top_active.png" or ""),
-				machineBlockTexture..(config.customBottomTexture and "^industrialtest_"..config.name.."_bottom_active.png" or ""),
-				machineBlockTexture..(config.customRightTexture and "^industrialtest_"..config.name.."_right_active.png" or ""),
-				machineBlockTexture..(config.customLeftTexture and "^industrialtest_"..config.name.."_left_active.png" or ""),
-				machineBlockTexture..(config.customBackTexture and "^industrialtest_"..config.name.."_back_active.png" or ""),
-				machineBlockTexture..(config.customFrontTexture and "^industrialtest_"..config.name.."_front_active.png" or "")
-			}
-		},
-		onConstruct=simpleElectricItemProcessor.onConstruct,
-		onTimer=function(pos,elapsed,meta,inv)
-			return simpleElectricItemProcessor.onTimer(pos,elapsed,meta,inv,config)
-		end,
-		allowMetadataInventoryMove=simpleElectricItemProcessor.allowMetadataInventoryMove,
-		allowMetadataInventoryPut=simpleElectricItemProcessor.allowMetadataInventoryPut,
-		onMetadataInventoryPut=simpleElectricItemProcessor.onMetadataInventoryPut,
-		onMetadataInventoryMove=simpleElectricItemProcessor.onMetadataInventoryMove,
-		onMetadataInventoryTake=simpleElectricItemProcessor.onMetadataInventoryTake,
-		activeOnTimer=function(pos,elapsed,meta,inv)
-			return simpleElectricItemProcessor.activeOnTimer(pos,elapsed,meta,inv,config)
-		end
-	})
-	industrialtest.api.addTag("industrialtest:"..config.name,"simpleElectricItemProcessor")
-end

machines/simple_electric_item_processor.lua

@@ -0,0 +1,220 @@
+-- IndustrialTest
+-- Copyright (C) 2025 mrkubax10
+
+-- This program is free software: you can redistribute it and/or modify
+-- it under the terms of the GNU General Public License as published by
+-- the Free Software Foundation, either version 3 of the License, or
+-- (at your option) any later version.
+
+-- This program is distributed in the hope that it will be useful,
+-- but WITHOUT ANY WARRANTY; without even the implied warranty of
+-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+-- GNU General Public License for more details.
+
+-- You should have received a copy of the GNU General Public License
+-- along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+industrialtest.SimpleElectricItemProcessor=table.copy(industrialtest.ActivatedElectricMachine)
+industrialtest.internal.unpackTableInto(industrialtest.SimpleElectricItemProcessor,{
+	facedir=true,
+	sounds="metal",
+	storageLists={
+		"src",
+		"dst",
+		"powerStorage",
+		"upgrades"
+	},
+	powerLists={
+		{
+			list="powerStorage",
+			direction="i"
+		}
+	},
+	hasPowerInput=true,
+	ioConfig="iiiiii"
+})
+
+function industrialtest.SimpleElectricItemProcessor.onConstruct(self,pos)
+	local meta=minetest.get_meta(pos)
+	local inv=meta:get_inventory()
+	inv:set_size("src",1)
+	inv:set_size("dst",1)
+	inv:set_size("powerStorage",1)
+	inv:set_size("upgrades",4)
+	meta:set_float("srcTime",-1)
+	meta:set_float("maxSrcTime",0)
+	industrialtest.ActivatedElectricMachine.onConstruct(self,pos)
+end
+
+function industrialtest.SimpleElectricItemProcessor.getFormspec(self,pos)
+	local parentFormspec=industrialtest.ActivatedElectricMachine.getFormspec(self,pos)
+	local meta=minetest.get_meta(pos)
+	local powerPercent=meta:get_int("industrialtest.powerAmount")/meta:get_int("industrialtest.powerCapacity")*100
+	local srcPercent=meta:get_float("srcTime")/meta:get_float("maxSrcTime")*100
+	local formspec={
+		"list[context;src;3.4,1.8;1,1]",
+		industrialtest.internal.getItemSlotBg(3.4,1.8,1,1),
+		(powerPercent>0 and "image[3.4,2.8;1,1;industrialtest_gui_electricity_bg.png^[lowpart:"..powerPercent..":industrialtest_gui_electricity_fg.png]"
+		 or "image[3.4,2.8;1,1;industrialtest_gui_electricity_bg.png]"),
+		"list[context;powerStorage;3.4,3.9;1,1]",
+		industrialtest.internal.getItemSlotBg(3.4,3.9,1,1),
+		(srcPercent>0 and "image[4.9,2.8;1,1;gui_furnace_arrow_bg.png^[lowpart:"..srcPercent..":gui_furnace_arrow_fg.png^[transformR270]"
+		 or "image[4.9,2.8;1,1;gui_furnace_arrow_bg.png^[transformR270]"),
+		"list[context;dst;6.4,2.8;1,1]",
+		industrialtest.internal.getItemSlotBg(6.4,2.8,1,1),
+		"list[context;upgrades;9,0.9;1,4]",
+		industrialtest.internal.getItemSlotBg(9,0.9,1,4),
+		"listring[context;src]",
+		"listring[context;dst]"
+	}
+	return parentFormspec..table.concat(formspec,"")
+end
+
+function industrialtest.SimpleElectricItemProcessor.allowMetadataInventoryMove(self,pos,fromList,fromIndex,toList,count)
+	if toList=="dst" then
+		return 0
+	end
+	return industrialtest.ActivatedElectricMachine.allowMetadataInventoryMove(self,pos,fromList,fromIndex,toList,count)
+end
+
+function industrialtest.SimpleElectricItemProcessor.allowMetadataInventoryPut(self,pos,listname,index,stack)
+	if listname=="dst" then
+		return 0
+	elseif listname=="src" then
+		local meta=minetest.get_meta(pos)
+		local inv=meta:get_inventory()
+		local srcSlot=inv:get_stack("src",1)
+		if srcSlot:get_name()~=stack:get_name() then
+			meta:set_float("srcTime",-1)
+			meta:set_float("maxSrcTime",0)
+		end
+	end
+	return industrialtest.ActivatedElectricMachine.allowMetadataInventoryPut(self,pos,listname,index,stack)
+end
+
+function industrialtest.SimpleElectricItemProcessor.onMetadataInventoryMove(self,pos,fromList,fromIndex,toList,toIndex,count)
+	industrialtest.ActivatedElectricMachine.onMetadataInventoryMove(self,pos,fromList,fromIndex,toList,toIndex,count)
+	local meta=minetest.get_meta(pos)
+	local inv=meta:get_inventory()
+	local srcSlot=inv:get_stack("src",1)
+	local dstSlot=inv:get_stack("dst",1)
+	if fromList=="src" and count==srcSlot:get_count() then
+		meta:set_float("srcTime",-1)
+		meta:set_float("maxSrcTime",0)
+		if meta:get_int("industrialtest.powerAmount")>0 then
+			self:updateFormspec(pos)
+		end
+	elseif fromList=="dst" and dstSlot:get_free_space()>0 then
+		self:triggerIfNeeded(pos)
+	end
+end
+
+function industrialtest.SimpleElectricItemProcessor.onMetadataInventoryPut(self,pos)
+	industrialtest.ActivatedElectricMachine.onMetadataInventoryPut(self,pos)
+	self:triggerIfNeeded(pos)
+end
+
+function industrialtest.SimpleElectricItemProcessor.onMetadataInventoryTake(self,pos,listname,index,stack)
+	industrialtest.ActivatedElectricMachine.onMetadataInventoryTake(self,pos,listname,index,stack)
+	local meta=minetest.get_meta(pos)
+	local inv=meta:get_inventory()
+	local srcSlot=inv:get_stack("src",1)
+	local dstSlot=inv:get_stack("dst",1)
+	if listname=="src" and stack:get_count()==srcSlot:get_count() then
+		meta:set_float("srcTime",-1)
+		meta:set_float("maxSrcTime",0)
+		if meta:get_int("industrialtest.powerAmount")>0 then
+			self:updateFormspec(pos)
+		end
+	elseif listname=="dst" and dstSlot:get_free_space()>0 then
+		self:triggerIfNeeded(pos)
+	end
+end
+
+function industrialtest.SimpleElectricItemProcessor.register(self)
+	industrialtest.ActivatedElectricMachine.register(self)
+	industrialtest.api.addTag(self.name,"simpleElectricItemProcessor")
+end
+
+function industrialtest.SimpleElectricItemProcessor.shouldActivate(self,pos)
+	local meta=minetest.get_meta(pos)
+	local inv=meta:get_inventory()
+
+	-- TODO: Take elapsed time into account
+	local requiredPower=self.opPower*industrialtest.api.getMachineSpeed(meta)
+	if meta:get_int("industrialtest.powerAmount")<requiredPower then
+		return false
+	end
+
+	local srcSlot=inv:get_stack("src",1)
+	if srcSlot:get_count()>0 then
+		local output=self:getCraftResult(srcSlot)
+		return output and output.time>0 and inv:room_for_item("dst",output.item)
+	end
+	return false
+end
+
+function industrialtest.SimpleElectricItemProcessor.shouldDeactivate(self,pos)
+	local meta=minetest.get_meta(pos)
+	local inv=meta:get_inventory()
+
+	-- TODO: Take elapsed time into account
+	local requiredPower=self.opPower*industrialtest.api.getMachineSpeed(meta)
+	if meta:get_int("industrialtest.powerAmount")<requiredPower then
+		return true
+	end
+
+	local srcSlot=inv:get_stack("src",1)
+	if srcSlot:is_empty() then
+		return true
+	end
+
+	local output=self:getCraftResult(srcSlot)
+	return not output or output.time==0 or not inv:room_for_item("dst",output.item)
+end
+
+function industrialtest.SimpleElectricItemProcessor.activeUpdate(self,pos,elapsed,meta,inv)
+	local srcSlot=inv:get_stack("src",1)
+
+	local srcTime=0
+	local maxSrcTime
+	if meta:get_float("maxSrcTime")<=0 then
+		local output=self:getCraftResult(srcSlot)
+		maxSrcTime=output.time*self.efficiency
+		meta:set_float("srcTime",0)
+		meta:set_float("maxSrcTime",maxSrcTime)
+		shouldUpdateFormspec=true
+	else
+		srcTime=meta:get_float("srcTime")
+		maxSrcTime=meta:get_float("maxSrcTime")
+	end
+
+	local speed=industrialtest.api.getMachineSpeed(meta)
+	local requiredPower=elapsed*self.opPower*speed
+	industrialtest.api.addPower(meta,-requiredPower)
+	srcTime=srcTime+elapsed
+	meta:set_int("srcTime",srcTime)
+
+	if srcTime>=maxSrcTime then
+		local output=self:getCraftResult(srcSlot)
+		local usedItems=srcSlot:get_count()-output.src:get_count()
+		local multiplier=1
+		if srcSlot:get_count()>=speed*usedItems then
+			multiplier=speed
+		end
+		if output.item:get_count()>0 then
+			output.item:set_count(output.item:get_count()*multiplier)
+			inv:add_item("dst",output.item)
+			meta:set_float("srcTime",-1)
+			meta:set_float("maxSrcTime",0)
+		end
+		srcSlot:set_count(srcSlot:get_count()-multiplier*usedItems)
+		inv:set_stack("src",1,srcSlot)
+	end
+
+	return true
+end
+
+function industrialtest.SimpleElectricItemProcessor.getCraftResult(self,itemstack)
+	-- Dummy method
+end