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local map_def={
example = {
p1x=168,
p1z=530,
p2x=780,
p2z=1016,
background="itm_example.png",
},
}
local itm_cache={}
local itm_pdata={}
local itm_conf_mindia=0.1
minetest.register_privilege("itm", { description = "Allows to display train map", give_to_singleplayer = true, default = false })
local function create_map_form_with_bg(d)
local minx, minz, maxx, maxz = math.min(d.p1x, d.p2x), math.min(d.p1z, d.p2z), math.max(d.p1x, d.p2x), math.max(d.p1z, d.p2z)
local form_x, form_z=10,10
local edge_x, edge_z = form_x/(maxx-minx), form_z/(maxz-minz)
local len_x, len_z=math.max(edge_x, itm_conf_mindia), math.max(edge_z, itm_conf_mindia)
local form="size["..(form_x+edge_x)..","..(form_z+edge_z).."] background[0,0;0,0;"..d.background..";true] "
local lbl={}
for pts, tid in pairs(advtrains.detector.on_node) do
local pos=minetest.string_to_pos(pts)
form=form.."box["..(edge_x*(pos.x-minx))..","..(form_z-(edge_z*(pos.z-minz)))..";"..len_x..","..len_z..";red]"
lbl[sid(tid)]=pos
end
for t_id, xz in pairs(lbl) do
form=form.."label["..(edge_x*(xz.x-minx))..","..(form_x-(edge_z*(xz.z-minz)))..";"..t_id.."]"
end
return form
end
local function create_map_form(d)
if d.background then
return create_map_form_with_bg(d)
end
local minx, minz, maxx, maxz = math.min(d.p1x, d.p2x), math.min(d.p1z, d.p2z), math.max(d.p1x, d.p2x), math.max(d.p1z, d.p2z)
local form_x, form_z=10,10
local edge_x, edge_z = form_x/(maxx-minx), form_z/(maxz-minz)
local len_x, len_z=math.max(edge_x, itm_conf_mindia), math.max(edge_z, itm_conf_mindia)
local form="size["..(form_x+edge_x)..","..(form_z+edge_z).."]"
local lbl={}
for x,itx in pairs(itm_cache) do
if x>=minx and x<=maxx then
for z,y in pairs(itx) do
if z>=minz and z<=maxz then
local adn=advtrains.detector.get({x=x, y=y, z=z})
local color="gray"
if adn then
color="red"
lbl[sid(adn)]={x=x, z=z}
end
form=form.."box["..(edge_x*(x-minx))..","..(form_z-(edge_z*(z-minz)))..";"..len_x..","..len_z..";"..color.."]"
end
end
end
end
for t_id, xz in pairs(lbl) do
form=form.."label["..(edge_x*(xz.x-minx))..","..(form_x-(edge_z*(xz.z-minz)))..";"..t_id.."]"
end
return form
end
local function cache_ndb()
itm_cache={}
local ndb_nodes=advtrains.ndb.get_nodes()
for y, xzt in pairs(ndb_nodes) do
for x, zt in pairs(xzt) do
for z, _ in pairs(zt) do
if not itm_cache[x] then
itm_cache[x]={}
end
itm_cache[x][z]=y
end
end
end
end
minetest.register_chatcommand("itm", {
params="[x1 z1 x2 z2] or [mdef]",
description="Display advtrains train map of given area.\nFirst form:[x1 z1 x2 z2] - specify area directly.\nSecond form:[mdef] - Use a predefined map background(see init.lua)\nThird form: No parameters - use WorldEdit position markers.",
privs={itm=true},
func = function(name, param)
local mdef=string.match(param, "^(%S+)$")
if mdef then
local d=map_def[mdef]
if not d then
return false, "Map definiton not found: "..mdef
end
itm_pdata[name]=map_def[mdef]
minetest.show_formspec(name, "itrainmap", create_map_form(d))
return true, "Showing train map: "..mdef
end
local x1, z1, x2, z2=string.match(param, "^(%S+) (%S+) (%S+) (%S+)$")
if not (x1 and z1 and x2 and z2) then
if worldedit then
local wep1, wep2=worldedit.pos1[name], worldedit.pos2[name]
if wep1 and wep2 then
x1, z1, x2, z2=wep1.x, wep1.z, wep2.x, wep2.z
end
end
end
if not (x1 and z1 and x2 and z2) then
return false, "Invalid parameters and no WE positions set"
end
local d={p1x=x1, p1z=z1, p2x=x2, p2z=z2}
itm_pdata[name]=d
minetest.show_formspec(name, "itrainmap", create_map_form(d))
return true, "Showing ("..x1..","..z1..")-("..x2..","..z2..")"
end,
})
minetest.register_chatcommand("itm_cache_ndb", {
params="",
description="Cache advtrains node database again. Run when tracks changed.",
privs={itm=true},
func = function(name, param)
cache_ndb()
return true, "Done caching node database."
end,
})
local timer=0
function advtrains_itm_mainloop(dtime)
timer=timer-math.min(dtime, 0.1)
if timer<=0 then
for pname,d in pairs(itm_pdata) do
minetest.show_formspec(pname, "itrainmap", create_map_form(d))
end
timer=2
end
end
minetest.register_on_player_receive_fields(function(player, formname, fields)
if formname=="itrainmap" and fields.quit then
itm_pdata[player:get_player_name()]=nil
end
end)
function advtrains_itm_init()
--automatically run itm_cache_ndb
minetest.after(2, cache_ndb)
end
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