many worldgen mods and gonna try technic now

mods/technic_plus/technic/machines/register/grindings.lua

@@ -0,0 +1,73 @@
+local S = technic.getter
+local moretrees = minetest.get_modpath("moretrees")
+local dye = minetest.get_modpath("dye")
+
+-- sawdust, the finest wood/tree grinding
+local sawdust = "technic:sawdust"
+minetest.register_craftitem(sawdust, {
+	description = S("Sawdust"),
+	inventory_image = "technic_sawdust.png",
+})
+minetest.register_craft({ type = "fuel", recipe = sawdust, burntime = 6 })
+technic.register_compressor_recipe({ input = {sawdust .. " 4"}, output = "default:wood" })
+
+-- tree/wood grindings
+local function register_tree_grinding(name, tree, wood, extract, grinding_color)
+	local lname = string.lower(name)
+	lname = string.gsub(lname, ' ', '_')
+	local grindings_name = "technic:"..lname.."_grindings"
+	if not minetest.registered_craftitems[grindings_name] then
+		local inventory_image = "technic_"..lname.."_grindings.png"
+		if grinding_color then
+			inventory_image = inventory_image .. "^[colorize:" .. grinding_color
+		end
+		minetest.register_craftitem(grindings_name, {
+			description = S("%s Grinding"):format(S(name)),
+			inventory_image = inventory_image,
+		})
+		minetest.register_craft({
+			type = "fuel",
+			recipe = grindings_name,
+			burntime = 8,
+		})
+	end
+	technic.register_grinder_recipe({ input = { tree }, output = grindings_name .. " 4" })
+	technic.register_grinder_recipe({ input = { grindings_name }, output = sawdust .. " 4" })
+	if wood then
+		technic.register_grinder_recipe({ input = { wood }, output = grindings_name })
+	end
+	if extract then
+		technic.register_extractor_recipe({ input = { grindings_name .. " 4" }, output = extract})
+		technic.register_separating_recipe({
+			input = { grindings_name .. " 4" },
+			output = { sawdust .. " 4", extract }
+		})
+	end
+end
+
+local rubber_tree_planks = moretrees and "moretrees:rubber_tree_planks"
+local default_extract = dye and "dye:brown 2"
+
+-- https://en.wikipedia.org/wiki/Catechu ancient brown dye from the wood of acacia trees
+local acacia_extract = dye and "dye:brown 8"
+
+-- technic recipes don't support groups yet :/
+--register_tree_grinding("Common Tree", "group:tree", "group:wood", default_extract)
+
+register_tree_grinding("Acacia", "default:acacia_tree", "default:acacia_wood", acacia_extract)
+register_tree_grinding("Common Tree", "default:tree", "default:wood", default_extract)
+register_tree_grinding("Common Tree", "default:aspen_tree", "default:aspen_wood", default_extract)
+register_tree_grinding("Common Tree", "default:jungletree", "default:junglewood", default_extract)
+register_tree_grinding("Common Tree", "default:pine_tree", "default:pine_wood", default_extract)
+register_tree_grinding("Rubber Tree", "moretrees:rubber_tree_trunk", rubber_tree_planks, "technic:raw_latex")
+register_tree_grinding("Rubber Tree", "moretrees:rubber_tree_trunk_empty", nil, "technic:raw_latex")
+
+if moretrees then
+	local trees = {
+		"beech", "apple_tree", "oak", "sequoia", "birch", "palm",
+		"date_palm", "spruce", "cedar", "poplar", "willow", "fir"
+	}
+	for _,tree in pairs(trees) do
+		register_tree_grinding("Common Tree", "moretrees:"..tree.."_trunk", "moretrees:"..tree.."_planks", default_extract)
+	end
+end