Implement Transformers

api.lua

@@ -27,7 +27,8 @@ industrialtest.api.hvPowerFlow=10200
 industrialtest.api.evPowerFlow=40800
 industrialtest.api.ivPowerFlow=163800
 
-local function clamp(num,min,max)
+industrialtest.internal={}
+industrialtest.internal.clamp=function(num,min,max)
 	return math.max(math.min(num,max),min)
 end
 
@@ -43,6 +44,32 @@ industrialtest.api.addPowerStorage=function(meta,capacity,flow,ioConfig)
 	meta:set_int("industrialtest.powerAmount",0)
 	meta:set_string("industrialtest.ioConfig",ioConfig)
 end
+-- \brief Takes rotated node and side and outputs normalized side that can be used for ioConfig lookups
+-- \param pos Vector with node position
+-- \param side Node side. See industrialtest.api.addPowerStorage for possible values
+-- \returns Normalized side or in case of failure side argument back
+industrialtest.api.normalizeSide=function(pos,side)
+	local node=minetest.get_node(pos)
+	-- FIXME: improve code quality there
+	local translation={
+		[0]={
+			1,2,3,4,5,6
+		},
+		[1]={
+			5,6,3,4,2,1
+		},
+		[2]={
+			1,2,3,4,6,5
+		},
+		[3]={
+			6,5,3,4,1,2
+		}
+	}
+	if node.param2>3 then
+		return side
+	end
+	return translation[node.param2][side]
+end
 -- \brief Checks if metadata contains power storage
 -- \param meta MetaDataRef which should be checked
 -- \returns true if metadata contains power storage, false otherwise
@@ -129,7 +156,7 @@ industrialtest.api.addPower=function(meta,amount)
 	local powerAmount=meta:get_int("industrialtest.powerAmount")
 	local powerCapacity=meta:get_int("industrialtest.powerCapacity")
 	local prevPowerAmount=powerAmount
-	powerAmount=clamp(powerAmount+amount,0,powerCapacity)
+	powerAmount=industrialtest.internal.clamp(powerAmount+amount,0,powerCapacity)
 	meta:set_int("industrialtest.powerAmount",powerAmount)
 	return powerAmount-prevPowerAmount
 end

machines.lua

@@ -1194,3 +1194,150 @@ minetest.register_craft({
 		{"industrialtest:refined_iron_ingot",industrialtest.elementKeys.dirt,"industrialtest:refined_iron_ingot"}
 	}
 })
+
+-- Transformers
+local function registerTransformer(config)
+	definition={
+		description=S(config.displayName),
+		tiles={
+			config.machineBlockTexture.."^industrialtest_"..config.name.."_side.png",
+			config.machineBlockTexture.."^industrialtest_"..config.name.."_side.png",
+			config.machineBlockTexture.."^industrialtest_"..config.name.."_side.png",
+			config.machineBlockTexture.."^industrialtest_"..config.name.."_side.png",
+			config.machineBlockTexture.."^industrialtest_"..config.name.."_side.png",
+			config.machineBlockTexture.."^industrialtest_"..config.name.."_front.png"
+		},
+		paramtype2="facedir",
+		legacy_facedir_simple=true,
+		drop=(config.requiresWrench and "industrialtest:machine_block" or "industrialtest:"..config.name),
+		on_construct=function(pos)
+			local meta=minetest.get_meta(pos)
+			industrialtest.api.addPowerStorage(meta,config.upperFlow,0,"aaaaaa")
+		end,
+		on_timer=function(pos,elapsed)
+			local meta=minetest.get_meta(pos)
+			local node=minetest.get_node(pos)
+			local neighbourPositions={
+				vector.offset(pos,-1,0,0),
+				vector.offset(pos,1,0,0),
+				vector.offset(pos,0,-1,0),
+				vector.offset(pos,0,1,0),
+				vector.offset(pos,0,0,-1),
+				vector.offset(pos,0,0,1)
+			}
+			local upperPowerDistribution=0
+			local lowerPowerDistribution=0
+
+			for key,value in ipairs(neighbourPositions) do
+				if industrialtest.api.hasPowerStorage(minetest.get_meta(value)) then
+					local normalized=industrialtest.api.normalizeSide(pos,key)
+					if normalized==5 then
+						upperPowerDistribution=config.upperFlow
+					else
+						lowerPowerDistribution=lowerPowerDistribution+1
+					end
+				else
+					neighbourPositions[key]=0
+				end
+			end
+			if lowerPowerDistribution>0 then
+				lowerPowerDistribution=math.floor(industrialtest.internal.clamp(math.min(config.upperFlow,meta:get_int("industrialtest.powerAmount"))/lowerPowerDistribution,0,config.lowerFlow))
+			end
+
+			local roomAvailable=false
+			for key,value in ipairs(neighbourPositions) do
+				if value~=0 then
+					local neighbourMeta=minetest.get_meta(value)
+					local normalized=industrialtest.api.normalizeSide(pos,key)
+					if normalized==5 then
+						if meta:get_int("industrialtest.powerAmount")==config.upperFlow then
+							industrialtest.api.transferPower(meta,neighbourMeta,config.upperFlow)
+						end
+					else
+						industrialtest.api.transferPower(meta,neighbourMeta,lowerPowerDistribution)
+					end
+					if not industrialtest.api.isFullyCharged(neighbourMeta) then
+						roomAvailable=true
+					end
+				end
+			end
+
+			return (meta:get_int("industrialtest.powerAmount")>0 and roomAvailable)
+		end,
+		_industrialtest_onPowerFlow=function(pos)
+			minetest.get_node_timer(pos):start(industrialtest.updateDelay)
+		end
+	}
+	if industrialtest.mtgAvailable then
+		definition.groups={cracky=2}
+		definition.sounds=(config.sounds=="metal" and default.node_sound_metal_defaults() or default.node_sound_wood_defaults())
+	elseif industrialtest.mclAvailable then
+		definition.groups={pickaxey=1}
+		definition.sounds=(config.sounds=="metal" and mcl_sounds.node_sound_metal_defaults() or mcl_sounds.node_sound_wood_defaults())
+		definition._mcl_blast_resistance=3
+		definition._mcl_hardness=3.5
+	end
+	definition.groups._industrialtest_hasPowerInput=1
+	definition.groups._industrialtest_hasPowerOutput=1
+	definition.groups._industrialtest_wrenchUnmountable=1
+	minetest.register_node("industrialtest:"..config.name,definition)
+end
+registerTransformer({
+	name="lv_transformer",
+	displayName="LV Transformer",
+	machineBlockTexture="industrialtest_wood_machine_block.png",
+	requiresWrench=false,
+	lowerFlow=industrialtest.api.lvPowerFlow,
+	upperFlow=industrialtest.api.mvPowerFlow,
+	sounds="wood"
+})
+minetest.register_craft({
+	type="shaped",
+	output="industrialtest:lv_transformer",
+	recipe={
+		{"group:wood","industrialtest:insulated_tin_cable","group:wood"},
+		{industrialtest.elementKeys.copperIngot,industrialtest.elementKeys.copperIngot,industrialtest.elementKeys.copperIngot},
+		{"group:wood","industrialtest:insulated_copper_cable","group:wood"}
+	}
+})
+
+registerTransformer({
+	name="mv_transformer",
+	displayName="MV Transformer",
+	machineBlockTexture="industrialtest_machine_block.png",
+	requiresWrench=true,
+	lowerFlow=industrialtest.api.mvPowerFlow,
+	upperFlow=industrialtest.api.hvPowerFlow,
+	sounds="metal"
+})
+minetest.register_craft({
+	type="shaped",
+	output="industrialtest:mv_transformer",
+	recipe={
+		{"industrialtest:insulated_copper_cable"},
+		{"industrialtest:machine_block"},
+		{"industrialtest:insulated_gold_cable"}
+	}
+})
+
+registerTransformer({
+	name="hv_transformer",
+	displayName="HV Transformer",
+	machineBlockTexture="industrialtest_machine_block.png",
+	requiresWrench=true,
+	lowerFlow=industrialtest.api.hvPowerFlow,
+	upperFlow=industrialtest.api.evPowerFlow,
+	sounds="metal"
+})
+-- TODO: Craft for HV transformer
+
+registerTransformer({
+	name="ev_transformer",
+	displayName="EV Transformer",
+	machineBlockTexture="industrialtest_machine_block.png",
+	requiresWrench=true,
+	lowerFlow=industrialtest.api.evPowerFlow,
+	upperFlow=industrialtest.api.ivPowerFlow,
+	sounds="metal"
+})
+-- TODO: Craft for EV Transformer