90 lines
2.4 KiB
Lua
90 lines
2.4 KiB
Lua
--[[
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Minecart
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========
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Copyright (C) 2019-2020 Joachim Stolberg
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MIT
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See license.txt for more information
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]]--
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-- for lazy programmers
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local M = minetest.get_meta
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local P2S = function(pos) if pos then return minetest.pos_to_string(pos) end end
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local S2P = minetest.string_to_pos
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local S = minecart.S
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local MP = minetest.get_modpath("minecart")
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local lib = dofile(MP.."/cart_lib3.lua")
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local CartsOnRail = minecart.CartsOnRail -- from storage.lua
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local get_route = minecart.get_route -- from storage.lua
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--
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-- Route recording
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--
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function minecart.start_recording(self, pos)
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self.start_key = lib.get_route_key(pos, self.driver)
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if self.start_key then
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self.waypoints = {}
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self.junctions = {}
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self.recording = true
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self.next_time = minetest.get_us_time() + 1000000
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minetest.chat_send_player(self.driver, S("[minecart] Start route recording!"))
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end
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end
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function minecart.store_next_waypoint(self, pos, vel)
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if self.start_key and self.recording and self.driver and
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self.next_time < minetest.get_us_time() then
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self.next_time = minetest.get_us_time() + 1000000
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self.waypoints[#self.waypoints+1] = {P2S(vector.round(pos)), P2S(vector.round(vel))}
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elseif self.recording and not self.driver then
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self.recording = false
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self.waypoints = nil
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self.junctions = nil
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end
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end
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-- destination reached(speed == 0)
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function minecart.stop_recording(self, pos, vel, puncher)
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local dest_pos = lib.get_route_key(pos, self.driver)
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if dest_pos then
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if self.start_key ~= dest_pos then
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local route = {
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waypoints = self.waypoints,
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dest_pos = dest_pos,
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junctions = self.junctions,
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}
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minecart.store_route(self.start_key, route)
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minetest.chat_send_player(self.driver, S("[minecart] Route stored!"))
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else
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minetest.chat_send_player(self.driver, S("[minecart] Recording canceled!"))
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end
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else
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minetest.chat_send_player(self.driver, S("[minecart] Recording canceled!"))
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end
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self.recording = false
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self.waypoints = nil
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self.junctions = nil
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end
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function minecart.set_junction(self, pos, dir, switch_keys)
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if self.junctions then
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self.junctions[P2S(vector.round(pos))] = {dir, switch_keys}
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end
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end
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function minecart.get_junction(self, pos, dir)
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local junctions = CartsOnRail[self.myID] and CartsOnRail[self.myID].junctions
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if junctions then
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local data = junctions[P2S(vector.round(pos))]
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if data then
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return data[1], data[2]
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end
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end
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return dir
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end
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