Factorio Forums

Code: Select all

function init_powered_walls()
	script.on_event(defines.events.on_built_entity, build_powered_wall)
	script.on_event(defines.events.on_robot_built_entity, build_powered_wall)
	script.on_event(defines.events.on_preplayer_mined_item, mined_powered_wall)
	script.on_event(defines.events.on_robot_pre_mined, mined_powered_wall)
	script.on_event(defines.events.on_entity_died, death_powered_wall)
end

...

function build_powered_wall(event)
	local entity = event.created_entity
	if entity and entity.name == "powered-wall-wall" then
		local l_name = "powered-wall-pole"
		local l_surface = game.get_surface(game.players[event.player_index].surface.name)
		local l_force = entity.force
		local l_position = entity.position
		local l_wall = entity
		local l_pole = l_surface.create_entity{name = l_name, position = l_position, force = l_force}

		group_entities(cantor(l_position.x,l_position.y), { l_wall, l_pole })
	end
end

Code: Select all

function group_entities(entity_groupid, entity_list)
	return group("entities", entity_groupid, entity_list)
end

Code: Select all

-- Grouping
--
function group(index_id, group_id, members)
	_init_group(index_id, group_id)

	if index_id == nil then
	 index_id = "default"
 	end

	if group_id then
		for ix, vx in ipairs(members) do
			_addto_group(index_id, group_id, vx)
		end
		return group_id
	else
		-- no GID, then assign one
		return group(index_id, _new_group(index_id), members)
	end
end

Code: Select all

-------------------------------------------------------------------
-- Cantor Hash
-------------------------------------------------------------------
function cantor(k1, k2)
	return (0.5 * (k1+k2) * (k1+k2+1) + k2)
end
-------------------------------------------------------------------