robot/helpers.lua at main · BlockySurvival/robot · GitHub

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local api = robot.internal_api

function api.stop_timer(nodeinfo)
	local timer = minetest.get_node_timer(nodeinfo.pos())
	if timer:is_started() then
		timer:stop()
	end
end

function api.start_timer(nodeinfo)
	local timer = minetest.get_node_timer(nodeinfo.pos())
	if not timer:is_started() then
		local ns = nodeinfo.robot_set()
		local delay = 0
		for _,n in ipairs(ns) do
			local d = api.tiers[n.info().tier].delay
			if d > delay then
				delay = d
			end
		end
		if delay == 0 then return end
		if nodeinfo.any_speed_enabled() then
			delay = delay / 2
		end
		if nodeinfo.any_boost_enabled() then
			delay = delay / 2
		end
		timer:start(delay)
	end
end

function api.move_robot(nodeinfo, new_pos)
	nodeinfo.set_pos(new_pos)
	local new_meta = nodeinfo.meta()
	new_meta:mark_as_private('code')
	new_meta:mark_as_private('memory')
end

function api.can_move_to(pos)
	local node = minetest.get_node(pos)

	if minetest.registered_nodes[node.name] then
		return minetest.registered_nodes[node.name].buildable_to or false
	end

	return false
end

function api.set_status(nodeinfo, status)
	for _, n in ipairs(nodeinfo.robot_set()) do
		local info = n.info()

		if status ~= info.status then
			n.set_node({ name = api.robot_name(info.tier, info.part, status) })
			api.update_formspec(n)
		end
	end

	if status == 'running' then
		api.start_timer(nodeinfo)
	else
		api.stop_timer(nodeinfo)
	end
end

function api.clear_error(nodeinfo)
	for _,n in ipairs(nodeinfo.robot_set()) do
		n.meta():set_string('error', '')
	end
end

function api.set_error(nodeinfo, error)
	local meta = nodeinfo.meta()
	for _,n in ipairs(nodeinfo.robot_set()) do
		n.meta():set_string('error', error)
	end
	if meta:get_int('ignore_errors') ~= 1 then
		api.set_status(nodeinfo, 'error')
		return true
	end
end