actually add the api calls... oops

apparently builtin already has the math. namespace, testing for it doesn't seam to work?
but assigning an empty table over it makes it angry, so lets not do that

sparkapi/lua/constants.lua

@@ -0,0 +1,14 @@
+-- .lua is the file extension, because i dont want to get yelled at
+-- i just realized, because this is all just my code depending on it i can define names like i want :D^
+
+TRUE = 1
+FALSE = 0
+
+-- sparktech_techy
+-- TODO: replace this later? like wiht a better name
+WRENCHABLE = 1
+
+-- energy_type
+ENERGY_PRODUCER = 2
+ENERGY_STORE = 3
+ENERGY_CONSUMER = 4

sparkapi/lua/dig.lua

@@ -0,0 +1,61 @@
+if not sparktech then sparktech = {} end
+
+
+function sparktech.empty_inventory(source, destination, listname) ---
+	--- expects those in already inventory formats
+	--                               
+	local inventory_lists = source:get_lists()
+	
+	if not inventory_lists then return true end
+	for i, list in pairs(inventory_lists) do
+		for n=1, #list do
+			if destination:room_for_item(listname, list[n]) then
+				destination:add_item("main", list[n])
+			else
+				return false
+			end
+		end
+	end
+
+	return true
+end 
+
+function sparktech.drop_inventory(nodepos, quilty) ---
+	--- evacutate the mines, quickly now!
+	local inventory_lists = minetest.get_meta(nodepos):get_inventory():get_lists()
+
+	for i, list in pairs(inventory_lists) do
+		for n=1, #list do
+			minetest.item_drop(list[n], quilty, nodepos)
+		end
+	end
+end
+
+function sparktech.dig_node(nodepos, inventory, listname, strictmode, quilty) ---
+	--- call with position, your inventory, and the listname
+	-- strictmode true: give me all you can
+	-- strictmode false: it is okay to drop items to the ground
+	local node = minetest.get_node(nodepos)
+	local node_inv = minetest.get_meta(nodepos):get_inventory()
+	if not sparktech.empty_inventory(node_inv, inventory, listname) then 
+		if not strictmode then
+			sparktech.drop_inventory(nodepos)
+		else
+			return false
+		end
+	end
+
+
+	if inventory:room_for_item(listname, ItemStack(node["name"])) then
+		inventory:add_item(listname, ItemStack(node["name"]))
+	else
+		if not strictmode then
+			minetest.item_drop(ItemStack(node["name"]), quilty, nodepos)
+		else
+			return false
+		end
+	end
+	minetest.remove_node(nodepos)
+	return true
+end
+

sparkapi/lua/energy.lua

@@ -0,0 +1,16 @@
+if not sparktech then sparktech = {} end
+
+function sparktech.can_drain_energy(target_pos, ammount) ---
+	--- check whether you can drain
+	return minetest.get_meta(target_pos):get_int("energy") >= ammount
+end
+
+function sparktech.drain_energy(target_pos, ammount)
+	local target = minetest.get_meta(target_pos)
+	local current = target:get_int("energy")
+	if sparktech.can_drain_energy(target_pos, ammount) then
+		target:set_int("energy", current - ammount)
+		return true
+	end
+	return false
+end

sparkapi/lua/math.lua

@@ -0,0 +1,8 @@
+function math.order(x, y) -- might change to arbitrary args later, but now now ... this is just the simple impl written for the quarry
+	if not x or not y then return nil end
+	if x <= y then
+		return x, y
+	else
+		return y, x
+	end
+end

sparkapi/lua/tool.lua

@@ -20,38 +20,9 @@ function sparktech.register_wrench(name, dictionary)
 	end
 	local on_place = function(itemstack, placer, pointed_thing)
 		if pointed_thing["type"] == "node" then
-			local node = minetest.get_node(pointed_thing["under"])
-			if minetest.get_item_group(node["name"], "sparktech_techy") > 0 then
-				local nodemeta = minetest.get_meta(pointed_thing["under"])
-				local item = ItemStack(node["name"])
-				if minetest.get_item_group(item:get_name(), "sparktech_energy_storeonbreak") > 0 then
-					item:set_metadata(nodemeta:get_int("energy"))
-				end
-				
-				minetest.remove_node(pointed_thing["under"])
-				sparktech.remove_node_from_net(pointed_thing.under, node)
-				
-				local node_inv = nodemeta:get_inventory()
-				local inv = placer:get_inventory()
-
-				local inventory_lists = node_inv:get_lists()
-
-				for i, list in pairs(inventory_lists) do
-					for n=1, #list do
-						if inv:room_for_item("main", list[n]) then
-							inv:add_item("main", list[n])
-						else
-							minetest.item_drop(list[n], placer, pointed_thing["under"])
-						end
-					end
-				end
-
-				if inv:room_for_item("main", item) then
-					inv:add_item("main", item)
-				else
-					minetest.item_drop(item, placer, pointed_thing["under"])
-				end
-			end
+			if not sparktech.dig_node then dofile("./dig.lua") end
+			sparktech.dig_node(pointed_thing["under"], placer:get_inventory(), "main", false, placer)
+			sparktech.remove_node_from_net(pointed_thing.under, minetest.get_node(pointed_thing.under))
 		end
 		return itemstack
 	end

sparkcompat/lua/mtg-default:ores.lua

@@ -0,0 +1,16 @@
+minetest.register_craft({
+	output = "sparkmachine:quarry_marker",
+	recipe = {
+		{ "sparkmachine:static_strut", "sparkmachine:static_strut" },
+		{ "default:steel_ingot", "default:copper_ingot" }
+	}
+})
+
+minetest.register_craft({
+	output = "sparkmachine:lv_furnace",
+	recipe = {
+		{ "default:clay_brick", "sparkcore:cable", "default:clay_brick"},
+		{ "default:clay_brick", "group:steel_chasis", "default:clay_brick" },
+		{ "default:clay_brick", "sparkcore:cable","default:clay_brick" }
+	}
+})

sparkcomponent/lua/steelplate.lua

@@ -17,7 +17,7 @@ minetest.register_craft({
 minetest.register_craftitem(NAME .. ":steel_chasis", {
 	groups = { steel_chasis = 1 }, -- group for a single item because we keep moving files around, this way it will work even if the modname changes
 	description = "Steel chasis",
-	inventory_image = "chasis.png",
+	inventory_image = "[inventorycube{sparkcomponent_steel_sideplate.png{sparkcomponent_steel_sideplate.png{sparkcomponent_steel_sideplate.png",
 	stack_max = 128,
 })
 

sparkcore/lua/capacitor.lua

@@ -1,4 +1,5 @@
 local NAME = minetest.get_current_modname()
+local MAX_ENERGY
 
 minetest.register_node(NAME ..":capacitor", {
   description = "Capacitor",
@@ -11,11 +12,11 @@ minetest.register_node(NAME ..":capacitor", {
     "capacitor_side.png"
   },
   groups = {
-    sparktech_techy = 3,
-    sparktech_energy_type = 3,
-    sparktech_energy_storeonbreak = 1,
-    sparktech_energy_max = 30000,
-    sparktech_net_trigger = 1,
+    sparktech_techy = WRENCHABLE,
+    sparktech_energy_type = ENERGY_STORE,
+    sparktech_energy_storeonbreak = TRUE,
+    sparktech_energy_max = MAX_ENERGY,
+    sparktech_net_trigger = TRUE,
   }
 })
 

sparkcore/lua/energy_distrib.lua

@@ -7,9 +7,9 @@ local function round(x)
 end
 
 local function wakeup(pos,share)
-	--called to test if a node needs to be woken uü
+	--called to test if a node needs to be woken up
 	local node = minetest.get_node(pos)
-	if (minetest.get_item_group(node.name, "sparktech_energy_wakeup") == 1) then
+	if (minetest.get_item_group(node.name, "sparktech_energy_wakeup") >= 1) then
 		local ntype = minetest.get_item_group(node.name, "spaktech_energy_type")
 		local meta = minetest.get_meta(pos)
 		local energy = meta:get_int("energy")
@@ -19,7 +19,7 @@ local function wakeup(pos,share)
 				minetest.get_node_timer(pos):start(0.5)
 			end
 		elseif ntype == 4 then
-			if minetest.get_item_group(node.name, "sparktech_energy_may") == energy then
+			if minetest.get_item_group(node.name, "sparktech_energy_wakeup") == energy then -- set the value to when you want to be woken up key
 				minetest.get_node_timer(pos):start(0.5)
 			end
 		end

sparkdebug/init.lua

@@ -1 +0,0 @@
-../init.lua

sparkdebug/init.lua

@@ -0,0 +1,18 @@
+local NAME = minetest.get_current_modname()
+local PATH = minetest.get_modpath(NAME) .."/lua/"
+local MODFILES = minetest.get_dir_list(PATH, false)
+
+spacenum = 20 - string.len(NAME)
+
+-- This assumes that the lua/ subdir contains lua code only.
+if not minetest.settings:get("spark_debug_enable") then
+	minetest.debug("│ " .. NAME .. string.rep(" ", spacenum) .. "DISABLED")
+	return false
+end
+
+minetest.debug("│ " .. NAME .. string.rep(" ",spacenum) .. "init")
+for i=1,table.getn(MODFILES),1
+do
+  minetest.debug("│ "..NAME .. string.rep(" ",spacenum) .."load    " .. MODFILES[i])
+  dofile(PATH .. MODFILES[i])
+end

sparkdebug/lua/energynodes.lua

@@ -9,11 +9,11 @@ minetest.register_node("sparkdebug:energyvoid", {
     "capacitor_side.png"
   },
   groups = {
-    sparkdebug = 1,
-    sparktech_energy_type = 4,
-    sparktech_net_trigger = 1,
+    sparkdebug = TRUE,
+    sparktech_energy_type = ENERGY_CONSUMER,
+    sparktech_net_trigger = TRUE,
     sparktech_energy_max = 10000,
-    sparktech_techy = 1
+    sparktech_techy = WRENCHABLE
   }
 })
 
@@ -28,11 +28,11 @@ minetest.register_node("sparkdebug:energysource", {
     "capacitor_side.png"
   },
   groups = {
-    sparkdebug = 1,
-    sparktech_energy_type = 2,
-    sparktech_net_trigger = 1,
+    sparkdebug = TRUE,
+    sparktech_energy_type = ENERGY_PRODUCER,
+    sparktech_net_trigger = TRUE,
     sparktech_energy_max = 10000,
-    sparktech_techy = 1
+    sparktech_techy = WRENCHABLE
   }
 })
 

sparkdebug/settingtypes.txt

@@ -0,0 +1 @@
+spark_debug_enable	([WARNING: ARBITRARY LUA CODE [very bad!]] enable sparkdebug)	bool	false

sparkgenerator/lua/burnergenerator.lua

@@ -1,5 +1,6 @@
-local fuel_multiplier = 2
-local interval = 0.5
+local FUEL_MULTIPLIER = 2
+local INTERVAL= 0.5
+local MAX_ENERGY = 2000
 
 
 local NAME = minetest.get_current_modname()
@@ -23,7 +24,7 @@ local function is_item_allowed(pos, target, _, stack)
 end
 
 local function ongetitem(pos) -- could add checking if energy >= max energy here, not really required since timer does that first thing anyway
-	local timer = minetest.get_node_timer(pos):start(interval)
+	local timer = minetest.get_node_timer(pos):start(INTERVAL)
 end
 
 local function update_formspec(pos)
@@ -57,11 +58,11 @@ minetest.register_node(NAME .. ":burnergenerator", {
 		"generator.png"},
 	paramtype2 = "facedir",
 	groups = {
-		sparktech_energy_wakeup = 1,
-		sparktech_techy = 1,
-		sparktech_energy_type = 2,
-		sparktech_net_trigger = 1,
-		sparktech_energy_max = 2000
+		sparktech_techy = WRENCHABLE,
+		sparktech_energy_wakeup = TRUE,
+		sparktech_energy_type = ENERGY_PRODUCER,
+		sparktech_net_trigger = TRUE,
+		sparktech_energy_max = MAX_ENERGY
 	},
 	on_construct = function(pos)
 		local meta = minetest.get_meta(pos)
@@ -69,7 +70,7 @@ minetest.register_node(NAME .. ":burnergenerator", {
 		meta:set_int("rem_energy_", 0)
 		local inv = meta:get_inventory()
 		inv:set_size('fuel', 1)
-	--	minetest.get_node_timer(pos):start(interval)
+	--	minetest.get_node_timer(pos):start(INTERVAL)
 	--	not required! its not like we got items on construct
 	end,
 	
@@ -118,7 +119,7 @@ minetest.register_node(NAME .. ":burnergenerator", {
 
 		update_formspec(pos) -- Later this should only be done when a player looks into the block
 
-		minetest.get_node_timer(pos):start(interval)
+		minetest.get_node_timer(pos):start(INTERVAL)
 	end
 })
 

sparkgenerator/lua/solar.lua

@@ -1,4 +1,5 @@
 local NAME = minetest.get_current_modname()
+local MAX_ENERGY = 50
 
 minetest.register_node(NAME .. ":solar", {
   description = "Solar Cell",
@@ -16,10 +17,10 @@ minetest.register_node(NAME .. ":solar", {
     }
   },
   groups = {
-    sparktech_techy = 1,
-    sparktech_energy_type = 2,
-    sparktech_net_trigger = 1,
-    sparktech_energy_max = 50
+    sparktech_techy = WRENCHABLE,
+    sparktech_energy_type = ENERGY_PRODUCER,
+    sparktech_net_trigger = TRUE,
+    sparktech_energy_max = MAX_ENERGY
   }
 })
 

sparkmachine/depends.txt

@@ -1,3 +1,2 @@
-default
 sparkcore
 sparkapi

sparkmachine/lua/metalfurnace.lua

@@ -1,4 +1,5 @@
 local NAME = minetest.get_current_modname()
+local MAX_ENERGY = 300
 local modifier = 10 -- Cooking cost modifier
 local time_modifier = 1.5 -- Cooking time modifier
 
@@ -46,7 +47,7 @@ local function update_formspec(pos)
 	
 	cfmsp = cfmsp ..
 	  sparktech.makebar("energy2.png", 0, 1.125, 9.75, 0.25,
-			    energy, minetest.get_item_group(minetest.get_node(pos).name, "sparktech_energy_max")
+			    energy, minetest.get_item_group(MAX_ENERGY)
 			    , 0)
 
 	for item=0, 1 do
@@ -117,21 +118,21 @@ minetest.register_node( NAME .. ":lv_furnace", {
 	description = "Electric furnace",
 
 	tiles = {
-		"furnace2.png",
-		"furnace2.png",
-		"furnace2.png",
-		"furnace2.png",
-		"backplate.png",
-		"frontplate.png"
+		NAME .. "_steel_sideplate.png",
+		NAME .. "_steel_sideplate.png",
+		NAME .. "_steel_sideplate.png",
+		NAME .. "_steel_sideplate.png",
+		NAME .. "_steel_backplate.png",
+		NAME .. "_furnace_frontplate.png"
 	},
 	paramtype2 = "facedir",
 
 	groups = {
-		sparktech_techy = 1,
-		sparktech_energy_type = 4,
-		sparktech_net_trigger = 1,
-		sparktech_energy_max = 300,
-		spark_energy_timer = 2
+		sparktech_techy = WRENCHABLE,
+		sparktech_energy_type = ENERGY_CONSUMER,
+		sparktech_net_trigger = TRUE,
+		sparktech_energy_max = MAX_ENERGY,
+		sparktech_energy_wakeup = 10
 	},
 
 	on_timer = mytime, -- add a mytimer function
@@ -160,12 +161,3 @@ minetest.register_node( NAME .. ":lv_furnace", {
 	--on_metadata_inventory_move = ongetitem, --doesnt seem necesarry to me, if the item moves in the inventory schould not change the cooking process
 	on_metadata_inventory_put = ongetitem
 })
-
-minetest.register_craft({
-	output = NAME .. ":lv_furnace",
-	recipe = {
-		{ "default:clay_brick", "sparkcore:cable", "default:clay_brick"},
-		{ "default:clay_brick", "group:steel_chasis", "default:clay_brick" },
-		{ "default:clay_brick", "sparkcore:cable","default:clay_brick" }
-	}
-})

sparkmachine/lua/quarry.lua

@@ -3,8 +3,9 @@ local ENERGYCOST  = {
 	static_strut = 20,
 	dynamic_struct = 24,
 	hardness_mod = 1,
-	mining_cost = 25,
+	mining = 25,
 }
+local MAX_ENERGY = 3000
 local FORMSPEC = sparktech.add_inventory(19.8,8,
 	"list[current_name;quarry;0,0;16,6;]")
 local MAX_SIZE = 64
@@ -14,15 +15,6 @@ local function Position(x, y, z) ---
 	return {x=x, y=y, z=z}
 end
 
-local function order(x, y) ---
-	--- Returns (smaller, bigger)
-	if x <= y then
-		return x, y
-	else
-		return y,x
-	end
-end
-
 local function try_drain_energy(target_pos, amount) ---
 	--- Returns true if drained, false otherwise
 	--- Removes amount energy from target_pos if energy >= amount
@@ -65,7 +57,8 @@ end
 local function dig_node(pos, quarrypos)
 	local node = minetest.get_node(pos)
 
-	if node.name ~= "air" and try_drain_energy(quarrypos, ENERGYCOST.mining_cost) then
+	if node.name ~= "air" and sparktech.drain_energy(quarrypos, ENERGYCOST.mining) then
+
 		local quarry = minetest.get_meta(quarrypos)
 		local quarry_inv = quarry:get_inventory()
 
@@ -96,9 +89,9 @@ local function on_marker_placed(pos, quarry_pos, player)
 
 	end
 
-	local minx, maxx = order(pos.x, quarry_pos.x)
-	local miny, maxy = order(pos.y, quarry_pos.y)
-	local minz, maxz = order(pos.z, quarry_pos.z)
+	local minx, maxx = math.order(pos.x, quarry_pos.x)
+	local miny, maxy = math.order(pos.y, quarry_pos.y)
+	local minz, maxz = math.order(pos.z, quarry_pos.z)
 
 	local diffx = maxx - minx
 	local diffy = maxy - miny
@@ -109,7 +102,6 @@ local function on_marker_placed(pos, quarry_pos, player)
 	   diffz < 2 or diffz >= MAX_SIZE
 	then
 		notify.hud.sendtext(player, "Invalid dimensions for quarry 3x3x3")
---		minetest.chat_send_player(player:get_player_name(), "Invalid dimensions for quarry")
 		return
 	end
 
@@ -130,12 +122,10 @@ end
 local function place_strut(position, quarrypos)
 	if minetest.get_node(position).name == "air" then
 		local placed = false
-		if try_remove_item(quarrypos, "quarry", NAME .. ":static_strut") then
-			if try_drain_energy(quarrypos, ENERGYCOST.static_strut) then
+		if sparktech.can_drain_energy(quarrypos, ENERGYCOST.static_strut) then
+			if try_remove_item(quarrypos, "quarry", NAME .. ":static_strut") then
 				minetest.set_node(position, { name = NAME .. ":static_strut"})
 				placed = true
-			else
-				-- TODO Restore items
 			end
 		end
 		return true, placed
@@ -145,9 +135,9 @@ end
 
 local function prepare_area(pos, pos2)
 	local placement_done = true
-	local minx, maxx = order(pos.x, pos2.x)
-	local miny, maxy = order(pos.y, pos2.y)
-	local minz, maxz = order(pos.z, pos2.z)
+	local minx, maxx = math.order(pos.x, pos2.x)
+	local miny, maxy = math.order(pos.y, pos2.y)
+	local minz, maxz = math.order(pos.z, pos2.z)
 	for x=minx , maxx do
 		for y=miny, maxy do
 			for z=minz, maxz do
@@ -191,6 +181,7 @@ end
 
 local function timer_trigger(pos, elapsed)
 	local meta = minetest.get_meta(pos)
+	if not meta then assert("FUCK") end
 	local framenum = meta:get_int("current_frame")
 	local marker_pos = minetest.string_to_pos(meta:get_string("marker"))
 
@@ -225,9 +216,9 @@ local function timer_trigger(pos, elapsed)
 		else
 			--shrink the operational area here to a 2d space with one piece of border taken away to drill there
 			--
-			local posx, pos2x = order(pos.x, marker_pos.x)
-			local posy, pos2y = order(pos.y, marker_pos.y)
-			local posz, pos2z = order(pos.z, marker_pos.z)
+			local posx, pos2x = math.order(pos.x, marker_pos.x)
+			local posy, pos2y = math.order(pos.y, marker_pos.y)
+			local posz, pos2z = math.order(pos.z, marker_pos.z)
 			posx = posx +1
 			pos2x = pos2x -1
 			posz = posz + 1
@@ -248,11 +239,9 @@ end
 minetest.register_node( NAME .. ":quarry_marker", {
 	descritption = "quarry marker",
 	tiles = {
-		"marker.png"
-	},
-	groups = {
-		oddly_breakable_by_hand = 1
+		NAME .. "marker.png"
 	},
+	groups = { sparktech_techy = 1 },
 	after_place_node = marker_construct,
 })
 
@@ -266,7 +255,7 @@ minetest.register_node( NAME .. ":static_strut", {
 		NAME .. ":lv_quarry"
 	},
 	tiles = {
-		"strut.png"
+		NAME .. "_strut.png"
 	},
 	node_box = {
 		type = "connected",
@@ -278,31 +267,28 @@ minetest.register_node( NAME .. ":static_strut", {
 		connect_front = {-0.2, -0.2, -0.5, 0.2, 0.2, -0.2},
 		connect_left = {-0.5, -0.2, -0.2, -0.2, 0.2, 0.2},
 	},
-	groups = {
-		oddly_breakable_by_hand = 1
-	}
+	groups = { sparktech_techy = 1 }
 })
 
 minetest.register_node( NAME .. ":lv_quarry", {
 	description = "Electric Quarry",
 
 	tiles = {
-		"quarry.png",
-		"quarry.png",
-		"quarry.png",
-		"quarry.png",
-		"backplate.png",
-		"quarry_frontplate.png"
+		NAME .. "_steel_sideplate.png",
+		NAME .. "_steel_sideplate.png",
+		NAME .. "_steel_sideplate.png",
+		NAME .. "_steel_sideplate.png",
+		NAME .. "_steel_backplate.png",
+		NAME .. "_quarry_frontplate.png"
 	},
 	paramtype2 = "facedir",
 
 	groups = {
-		sparktech_techy = 1,
-		sparktech_struty = 1,
-		sparktech_energy_type = 4,
-		sparktech_net_trigger = 1,
-		sparktech_energy_max = 3000,
-		spark_energy_timer = 2
+		sparktech_techy = WRENCHABLE,
+		sparktech_energy_type = ENERGY_CONSUMER,
+		sparktech_net_trigger = TRUE,
+		sparktech_energy_max = MAX_ENERGY,
+		sparktech_energy_wakeup = ENERGYCOST.mining
 	},
 
 	on_timer = timer_trigger,
@@ -322,13 +308,6 @@ minetest.register_craft({
 	}
 })
 
-minetest.register_craft({
-	output = NAME .. ":quarry_marker",
-	recipe = {
-		{ NAME .. ":static_strut", NAME .. ":static_strut" },
-		{ "default:steel_ingot", "default:copper_ingot" }
-	}
-})
 
 minetest.register_craft({
 	output = NAME .. ":static_strut 16",

sparktool/lua/charger.lua

@@ -1,4 +1,5 @@
 local NAME = minetest.get_current_modname()
+local MAX_ENERGY = 200
 
 local formspec = sparktech.add_inventory(8,1.5,
 	"list[current_name;charge;0,0;1,1;]")
@@ -8,20 +9,20 @@ local SPEED = 10
 minetest.register_node(NAME ..":charger", {
 	description = "Electric Charger",
 	tiles = {
-		"charger_top.png",
-		"charger_top.png",
-		"charger_side.png",
-		"charger_side.png",
-		"charger_side.png",
-		"charger_side.png"
+		NAME .. "_steel_sideplate.png",
+		NAME .. "_steel_sideplate.png",
+		NAME .. "_steel_sideplate.png",
+		NAME .. "_steel_sideplate.png",
+		NAME .. "_steel_backplate.png",
+		NAME .. "_charger_frontplate.png",
 	},
 	groups = {
-		sparktech_techy = 3,
-		sparktech_energy_type = 4,
-		sparktech_energy_storeonbreak = 1,
-		sparktech_energy_max = 200,
-		sparktech_net_trigger = 1,
-		spark_energy_timer = 2
+		sparktech_techy = WRENCHABLE,
+		sparktech_energy_type = ENERGY_CONSUMER,
+		sparktech_energy_storeonbreak = TRUE,
+		sparktech_net_trigger = TRUE,
+		sparktech_energy_max = MAX_ENERGY,
+		sparktech_energy_wakeup = 10 
 	},
 	allow_metadata_inventory_put = function (_, _, _, itemstack)
 		if minetest.get_item_group(itemstack:get_name(), "sparktech_chargable") > 0 then

sparktool/lua/wrench.lua

@@ -2,7 +2,7 @@ local NAME = minetest.get_current_modname()
 
 sparktech.register_wrench(NAME .. ":wrench", {
   description = "Wrench",
-  inventory_image = "wrench.png",
+  inventory_image = NAME .. "_wrench.png",
   stack_max = 1,
   range = 6.0
 })