296 lines
6.5 KiB
Lua
296 lines
6.5 KiB
Lua
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local mod_name = minetest.get_current_modname()
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local function log(level, message)
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minetest.log(level, ('[%s] %s'):format(mod_name, message))
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end
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log('action', 'CSM loading...')
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local mod_storage = minetest.get_mod_storage()
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local search_delta_default = 10
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--
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--
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-- local functions
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--
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--
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local function load_waypoints()
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if string.find(mod_storage:get_string('waypoints'), 'return') then
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return minetest.deserialize(mod_storage:get_string('waypoints'))
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else
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return {}
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end
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end
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local function load_waypoints_stack()
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if string.find(mod_storage:get_string('waypoints_stack'), 'return nil') then
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return {}
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end
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if string.find(mod_storage:get_string('waypoints_stack'), 'return') then
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return minetest.deserialize(mod_storage:get_string('waypoints_stack'))
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else
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return {}
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end
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end
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local waypoints = load_waypoints()
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local function safe(func)
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-- wrap a function w/ logic to avoid crashing the game
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local f = function(...)
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local status, out = pcall(func, ...)
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if status then
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return out
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else
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log('warning', 'Error (func): ' .. out)
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return nil
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end
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end
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return f
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end
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local function round(x)
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return math.floor(x+0.5)
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end
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local function pairsByKeys(t, f)
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local a = {}
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for n in pairs(t) do
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table.insert(a, n)
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end
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table.sort(a, f)
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local i = 0
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return function()
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i = i + 1
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if a[i] == nil then
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return nil
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else
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return a[i], t[a[i]]
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end
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end
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end
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local function lc_cmp(a, b)
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return a:lower() < b:lower()
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end
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local function tostring_point(point)
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return ('%i %i.5 %i'):format(round(point.x), round(point.y), round(point.z))
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end
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local function teleport_to(position_name)
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local wpname = position_name
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local waypoint = waypoints[wpname]
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if waypoint ~= nil then
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minetest.run_server_chatcommand('teleport', tostring_point(waypoint))
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else
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minetest.display_chat_message(('waypoint "%s" not found.'):format(wpname))
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end
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return true
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end
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local function stack_push()
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local point = minetest.localplayer:get_pos()
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wp_stack = load_waypoints_stack()
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count = #wp_stack +1
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wp_stack[count] = point
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mod_storage:set_string('waypoints_stack', minetest.serialize(wp_stack))
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end
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local function stack_pop()
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wp_stack = load_waypoints_stack()
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count = 0
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if nil ~= wp_stack then count = #wp_stack end
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if count<1 then
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minetest.display_chat_message('stack empty - no teleporting')
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return
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end
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minetest.run_server_chatcommand('teleport', tostring_point(wp_stack[count]))
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wp_stack[count] = nil
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mod_storage:set_string('waypoints_stack', minetest.serialize(wp_stack))
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return true
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end
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local function stack_show()
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wp_stack = load_waypoints_stack()
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count = 0
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if nil ~= wp_stack then count = #wp_stack end
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if count<1 then
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minetest.display_chat_message('stack empty')
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return true
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end
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output = ""
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for i = count,1,-1 do
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output = output .. tostring(i) .. " " .. tostring_point(wp_stack[i]).."\n"
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end
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return true ,output
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end
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local function stack_clear()
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mod_storage:set_string('waypoints_stack', minetest.serialize(nil))
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end
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local function stack_search(d)
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local delta = d
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if delta then delta = tonumber(delta) end
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if nil == delta then delta = search_delta_default end
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if delta < 0 then delta = 0 end
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here = minetest.localplayer:get_pos()
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minetest.display_chat_message(
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('%s : %s'):format("current position", tostring_point(here))
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)
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for name,pos in pairsByKeys(waypoints, lc_cmp) do
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if math.abs(here.y-pos.y) <= delta then
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if math.abs(here.x-pos.x) <= delta then
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if math.abs(here.z-pos.z) <= delta then
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minetest.display_chat_message(
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('%s -> %s'):format(name, tostring_point(pos)))
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end
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end
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end
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end
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return true
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end
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--
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--
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-- chat commands
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--
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--
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minetest.register_chatcommand('wp_set', {
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params = '<name>',
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description = 'set a waypoint',
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func = safe(function(param)
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waypoints = load_waypoints()
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local point = minetest.localplayer:get_pos()
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waypoints[param] = point
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mod_storage:set_string('waypoints', minetest.serialize(waypoints))
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minetest.display_chat_message(
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('set waypoint "%s" to "%s"'):format(param, tostring_point(point))
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)
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end),
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})
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minetest.register_chatcommand('wp_unset', {
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params = '<name>',
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description = 'remove a waypoint',
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func = safe(function(param)
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waypoints = load_waypoints()
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waypoints[param] = nil
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mod_storage:set_string('waypoints', minetest.serialize(waypoints))
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minetest.display_chat_message(
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('removed waypoint "%s"'):format(param)
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)
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end),
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})
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minetest.register_chatcommand('wp_list', {
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params = '',
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description = 'lists waypoints',
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func = safe(function(_)
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for name, point in pairsByKeys(waypoints, lc_cmp) do
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minetest.display_chat_message(
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('%s -> %s'):format(name, tostring_point(point))
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)
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end
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end),
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})
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minetest.register_chatcommand('tw', {
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params = '<waypoint>',
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description = 'teleport to a waypoint',
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func = safe(function(param)
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safe(teleport_to(param))
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end),
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}
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)
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minetest.register_chatcommand('tw_push', {
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params = '<waypoint>',
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description = 'teleport to a waypoint and save old position',
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func = safe(function(param)
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stack_push()
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safe(teleport_to(param))
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end),
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}
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)
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minetest.register_chatcommand('wp_push', {
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params = '<position/player>',
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description = 'teleport to a position/player and save old position',
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func = safe(function(param)
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stack_push()
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minetest.run_server_chatcommand('teleport', param)
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end),
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}
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)
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minetest.register_chatcommand('tw_pop', {
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params = '',
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description = 'return to the last saved position',
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func = stack_pop,
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}
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)
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minetest.register_chatcommand('wp_pop', {
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params = '',
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description = 'return to the last saved position',
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func = stack_pop,
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}
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)
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minetest.register_chatcommand('wp_stack', {
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params = '',
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description = 'shows the stack content',
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func = stack_show,
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}
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)
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minetest.register_chatcommand('wp_stack_clear', {
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params = '',
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description = 'clears the position stack',
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func = stack_clear,
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}
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)
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minetest.register_chatcommand('wp_search', {
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params = '(<delta>)',
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description = 'search a waypoint near the current position',
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func = stack_search,
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}
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)
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