minetest-mod-sparktech/sparkmachine/lua/quarry.lua

local MOD_NAME = minetest.get_current_modname()
local ENERGYCOST  = {
	static_struts = 20,
	dynamic_struct = 24,
	hardness_mod = 1
}

local function on_construct(pos, player)
	player:get_meta():set_string(MOD_NAME .. ":quarry_pos" , minetest.pos_to_string(pos))

end

local function on_marker_placed(pos, quarry_pos, player)
	-- Validate position
	if quarry_pos.x == pos.x and
	   quarry_pos.y == pos.y and
	   quarry_pos.z == pos.z then
		-- Invalid position, marker replaced quarry somehow
		return -- TODO Report failure?
		-- TODO clear clipboard in quarry on_break

	end
	-- TODO Possibly do a size check

	-- Set quarry metadata
	local meta = minetest.get_meta(quarry_pos)
	meta:set_string("marker", minetest.pos_to_string(pos))
	meta:set_int("current_frame", 13)

	minetest.get_node_timer(quarry_pos):start(1.0)
end

local function marker_construct(pos, player)
	local quarry_pos = minetest.string_to_pos(player:get_meta():get_string(MOD_NAME .. ":quarry_pos"))
	local quarry = minetest.get_node(quarry_pos)		
	on_marker_placed(pos, quarry_pos, player)	
end

local function clear_area(pos, pos2)
	local minx = pos.x
	local maxx = pos2.x
	if pos2.x < pos.x then
		minx = pos2.x
		maxx = pos.x
	end
	local miny = pos.y
	local maxy = pos2.y
	if pos2.y < pos.y then
		miny = pos2.y
		maxy = pos.y
	end
	local minz = pos.z
	local maxz = pos2.z
	if pos2.z < pos.z then
		minz = pos2.z
		maxz = pos.z
	end
	for x=minx , maxx do
		for y=miny, maxy do
			for z=minz, maxz do
				-- dont remove quarry or marker
				if x == pos.x and y == pos.y and z == pos.z then

				elseif x == pos2.x and y == pos2.y and z == pos2.z then
					
				else
					minetest.dig_node({ x=x, y=y, z=z })
				end
			end
		end
	end
end

local function struct_line(pos, pos2)
	local minx = pos.x
	local maxx = pos2.x
	if pos2.x < pos.x then
		minx = pos2.x
		maxx = pos.x
	end
	local miny = pos.y
	local maxy = pos2.y
	if pos2.y < pos.y then
		miny = pos2.y
		maxy = pos.y
	end
	local minz = pos.z
	local maxz = pos2.z
	if pos2.z < pos.z then
		minz = pos2.z
		maxz = pos.z
	end
	for x=minx , maxx do
		for y=miny, maxy do
			for z=minz, maxz do
				if x == pos.x and y == pos.y and z == pos.z then

				elseif x == pos2.x and y == pos2.y and z == pos2.z then
					
				else
					-- dont remove quarry or marker
					minetest.debug(x .. ": " .. y .. ": " .. z .. ": " .. MOD_NAME)
					minetest.place_node({x=x, y=y, z=z}, MOD_NAME .. ":static_strut")
				--	WHY THE FLYING FUCK DOES THIS TRIGGER "not a string" bullshit
				end
			end
		end
	end
end

local function timer_trigger(pos, elapsed)
	local meta = minetest.get_meta(pos)
	local framenum = meta:get_int("current_frame")
	local marker_pos = minetest.string_to_pos(meta:get_string("marker"))
	if not framenum then
		framenum = 13
	end
	if framenum < 0 then
		-- Operation Phase
		--
	else
		-- preparation phase
		if framenum == 13 then -- stripmine area
			clear_area(pos, marker_pos)
		elseif framenum == 12 then
			struct_line(pos, { x = marker_pos.x, y = pos.y, z = pos.z })
		elseif framenum == 11 then
			struct_line(pos, { x = pos.x, y = marker_pos.y, z = pos.z })
		elseif framenum == 10 then
			struct_line( { x = pos.x, y = marker_pos.y, z = pos.z }, { x = pos.x, y = marker_pos.y, z = marker_pos.z })
		elseif framenum == 9 then
			struct_line( { x = marker_pos.x, y = pos.y, z = pos.z }, { x = pos.x, y = marker_pos.y, z = marker_pos.z })
		elseif framenum == 8 then
			struct_line( { x = pos.x, y = pos.y, z = pos.z }, { x = pos.x, y = pos.y, z = marker_pos.z })
		elseif framenum == 7 then
			struct_line( { x = marker_pos.x, y = pos.y, z = pos.z }, { x = marker_pos.x, y = pos.y, z = marker_pos.z })
		elseif framenum == 6 then
			struct_line( { x = pos.x, y = marker_pos.y, z = pos.z }, { x = pos.x, y = marker_pos.y, z = marker_pos.z })
		elseif framenum == 5 then
			struct_line( { x = marker_pos.x, y = marker_pos.y, z = pos.z }, { x = marker_pos.x, y = marker_pos.y, z = marker_pos.z })
		elseif framenum == 4 then
			struct_line( { x = pos.x, y = pos.y, z = marker_pos.z }, { x = marker_pos.x, y = pos.y, z = marker_pos.z })
		elseif framenum == 3 then
			struct_line( { x = pos.x, y = pos.y, z = marker_pos.z }, { x = pos.x, y = marker_pos.y, z = marker_pos.z })
		elseif framenum == 2 then
			struct_line( { x = marker_pos.x, y = pos.y, z = marker_pos.z }, { x = marker_pos.x, y = marker_pos.y, z = marker_pos.z })
		elseif framenum == 1 then
			struct_line( { x = pos.x, y = marker_pos.y, z = marker_pos.z }, { x = marker_pos.x, y = marker_pos.y, z = marker_pos.z })
		elseif framenum == 0 then
			--shrink the operational area here to a 2d space with one piece of border taken away to drill there
		end
	end
	meta:set_int("current_frame", framenum -1)

	minetest.get_node_timer(pos):start(1.0)
end

minetest.register_node( MOD_NAME .. ":quarry_marker", {
	descritption = "quarry marker",
	tiles = {
		"marker.png"
	},
	after_place_node = marker_construct,
})

minetest.register_node( MOD_NAME .. ":static_strut", {
	desctiption = "supporting strut",
	tiles = {
		"strut.png"
	}
})

minetest.register_node( MOD_NAME .. ":lv_quarry", {
	description = "Electric Quarry",

	tiles = {
		"quarry.png",
		"quarry.png",
		"quarry.png",
		"quarry.png",
		"backplate.png",
		"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
	},

	on_timer = timer_trigger,

	after_place_node = on_construct,

	--on_destruct = function(pos, player) player:get_meta():set_string(MOD_NAME .. ":quarry_pos" , "") end,
	allow_metadata_inventory_put = function() return false end,
	allow_metadata_inventory_take = function(_, _, _, stack) return stack:get_count() end
})