137 lines
4.2 KiB
Lua
137 lines
4.2 KiB
Lua
local S = minetest.get_translator("testpathfinder")
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-- Config parameters
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-- Maximum direct distance between start and end
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local MAX_DIRECT_DISTANCE = 64
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-- Maximum search distance
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local MAX_SEARCH_DISTANCE = 32
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-- Maximum permitted jump height
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local MAX_JUMP = 1
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-- Maximum permitted drop height
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local MAX_DROP = 5
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-- If true, mod won't refuse to run pathfinder even at long distances
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local IGNORE_MAX_DISTANCE_SAFEGUARD = false
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-- End of config parameters
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local timer = 0
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local algorithms = {
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"A*_noprefetch",
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"A*",
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"Dijkstra",
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}
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local function find_path_for_player(player, itemstack)
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local meta = itemstack:get_meta()
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if not meta then
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return
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end
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local x = meta:get_int("pos_x")
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local y = meta:get_int("pos_y")
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local z = meta:get_int("pos_z")
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local algo = meta:get_int("algorithm")
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if x and y and z then
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local pos2 = {x=x, y=y, z=z}
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algo = algorithms[algo+1]
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local pos1 = vector.round(player:get_pos())
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-- Don't bother calling pathfinder for high distance to avoid freezing
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if (not IGNORE_MAX_DISTANCE_SAFEGUARD) and (vector.distance(pos1, pos2) > MAX_DIRECT_DISTANCE) then
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minetest.chat_send_player(player:get_player_name(), S("Destination too far away! Set a destination (via placing) within a distance of @1 and try again!", MAX_DIRECT_DISTANCE))
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return
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end
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local str = S("Path from @1 to @2:",
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minetest.pos_to_string(pos1),
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minetest.pos_to_string(pos2))
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minetest.chat_send_player(player:get_player_name(), str)
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local time_start = minetest.get_us_time()
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local path = minetest.find_path(pos1, pos2, MAX_SEARCH_DISTANCE, MAX_JUMP, MAX_DROP, algo)
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local time_end = minetest.get_us_time()
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local time_diff = time_end - time_start
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str = ""
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if not path then
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minetest.chat_send_player(player:get_player_name(), S("No path!"))
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minetest.chat_send_player(player:get_player_name(), S("Time: @1 ms", time_diff/1000))
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return
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end
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for s=1, #path do
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str = str .. minetest.pos_to_string(path[s]) .. "\n"
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local t
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if s == #path then
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t = "testpathfinder_waypoint_end.png"
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elseif s == 1 then
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t = "testpathfinder_waypoint_start.png"
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else
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local c = math.floor(((#path-s)/#path)*255)
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t = string.format("testpathfinder_waypoint.png^[multiply:#%02x%02x00", 0xFF-c, c)
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end
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minetest.add_particle({
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pos = path[s],
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expirationtime = 5 + 0.2 * s,
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playername = player:get_player_name(),
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glow = minetest.LIGHT_MAX,
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texture = t,
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size = 3,
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})
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end
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minetest.chat_send_player(player:get_player_name(), str)
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minetest.chat_send_player(player:get_player_name(), S("Path length: @1", #path))
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minetest.chat_send_player(player:get_player_name(), S("Time: @1 ms", time_diff/1000))
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end
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end
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local function set_destination(itemstack, user, pointed_thing)
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if not (user and user:is_player()) then
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return
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end
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local name = user:get_player_name()
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local obj
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local meta = itemstack:get_meta()
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if pointed_thing.type == "node" then
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local pos = pointed_thing.above
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meta:set_int("pos_x", pos.x)
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meta:set_int("pos_y", pos.y)
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meta:set_int("pos_z", pos.z)
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minetest.chat_send_player(user:get_player_name(), S("Destination set to @1", minetest.pos_to_string(pos)))
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return itemstack
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end
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end
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local function find_path_or_set_algorithm(itemstack, user, pointed_thing)
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if not (user and user:is_player()) then
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return
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end
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local ctrl = user:get_player_control()
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-- No sneak: Find path
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if not ctrl.sneak then
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find_path_for_player(user, itemstack)
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else
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-- Sneak: Set algorithm
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local meta = itemstack:get_meta()
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local algo = meta:get_int("algorithm")
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algo = (algo + 1) % #algorithms
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meta:set_int("algorithm", algo)
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minetest.chat_send_player(user:get_player_name(), S("Algorithm: @1", algorithms[algo+1]))
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return itemstack
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end
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end
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-- Punch: Find path
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-- Sneak+punch: Select pathfinding algorithm
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-- Place: Select destination node
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minetest.register_tool("testpathfinder:testpathfinder", {
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description = S("Pathfinder Tester") .."\n"..
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S("Finds path between 2 points") .."\n"..
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S("Place on node: Select destination") .."\n"..
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S("Punch: Find path from here") .."\n"..
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S("Sneak+Punch: Change algorithm"),
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inventory_image = "testpathfinder_testpathfinder.png",
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groups = { testtool = 1, disable_repair = 1 },
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on_use = find_path_or_set_algorithm,
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on_secondary_use = set_destination,
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on_place = set_destination,
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})
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