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-rw-r--r--advtrains_itrainmap/init.lua149
1 files changed, 149 insertions, 0 deletions
diff --git a/advtrains_itrainmap/init.lua b/advtrains_itrainmap/init.lua
new file mode 100644
index 0000000..756f1da
--- /dev/null
+++ b/advtrains_itrainmap/init.lua
@@ -0,0 +1,149 @@
+
+
+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.on_node[minetest.pos_to_string({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