Add privilege for basic train operation.

This privilege is granted to singleplayer by default, but is not granted on servers. This prevents unexperienced or evil players from breaking automatic train operation on servers.

3 files changed, 31 insertions, 15 deletions

diff --git a/advtrains/advtrains/signals.lua b/advtrains/advtrains/signals.lua
index ceb4166..a5a9aa3 100644
--- a/advtrains/advtrains/signals.lua
+++ b/advtrains/advtrains/signals.lua
@@ -41,8 +41,10 @@ for r,f in pairs({on={as="off", ls="green", als="red"}, off={as="on", ls="red",
 					advtrains.ndb.swap_node(pos, {name = "advtrains:retrosignal_"..f.as..rotation, param2 = node.param2})
 				end
 			}},
-			on_rightclick=function(pos, node, clicker)
-				advtrains.ndb.swap_node(pos, {name = "advtrains:retrosignal_"..f.as..rotation, param2 = node.param2})
+			on_rightclick=function(pos, node, player)
+				if minetest.check_player_privs(player:get_player_name(), {train_operator=true}) then
+					advtrains.ndb.swap_node(pos, {name = "advtrains:retrosignal_"..f.as..rotation, param2 = node.param2})
+				end
 			end,
 		})
 		advtrains.trackplacer.add_worked("advtrains:retrosignal", r, rotation, nil)
@@ -83,8 +85,10 @@ for r,f in pairs({on={as="off", ls="green", als="red"}, off={as="on", ls="red",
 					end
 				end,
 			},
-			on_rightclick=function(pos, node, clicker)
-				advtrains.ndb.swap_node(pos, {name = "advtrains:signal_"..f.as..rotation, param2 = node.param2})
+			on_rightclick=function(pos, node, player)
+				if minetest.check_player_privs(player:get_player_name(), {train_operator=true}) then
+					advtrains.ndb.swap_node(pos, {name = "advtrains:signal_"..f.as..rotation, param2 = node.param2})
+				end
 			end,
 		})
 		advtrains.trackplacer.add_worked("advtrains:signal", r, rotation, nil)
@@ -130,8 +134,10 @@ for r,f in pairs({on={as="off", ls="green", als="red"}, off={as="on", ls="red",
 					end
 				end,
 			},
-			on_rightclick=function(pos, node, clicker)
-				advtrains.ndb.swap_node(pos, {name = "advtrains:signal_wall_"..loc.."_"..f.as, param2 = node.param2})
+			on_rightclick=function(pos, node, player)
+				if minetest.check_player_privs(player:get_player_name(), {train_operator=true}) then
+					advtrains.ndb.swap_node(pos, {name = "advtrains:signal_wall_"..loc.."_"..f.as, param2 = node.param2})
+				end
 			end,
 		})
 	end
diff --git a/advtrains/advtrains/tracks.lua b/advtrains/advtrains/tracks.lua
index 90d2ad3..2bb61eb 100644
--- a/advtrains/advtrains/tracks.lua
+++ b/advtrains/advtrains/tracks.lua
@@ -260,11 +260,15 @@ advtrains.trackpresets = ap
 }]]

 function advtrains.register_tracks(tracktype, def, preset)

 	local function make_switchfunc(suffix_target, mesecon_state, is_state)

+		local rcswitchfunc=function(pos, node, player)

+			if minetest.check_player_privs(player:get_player_name(), {train_operator=true}) then

+				advtrains.ndb.swap_node(pos, {name=def.nodename_prefix.."_"..suffix_target, param2=node.param2})

+			end

+		end

 		local switchfunc=function(pos, node, newstate)

 			if newstate~=is_state then

 				advtrains.ndb.swap_node(pos, {name=def.nodename_prefix.."_"..suffix_target, param2=node.param2})

 			end

-			advtrains.invalidate_all_paths()

 		end

 		local mesec

 		if mesecon_state then -- if mesecons is not wanted, do not.

@@ -273,13 +277,13 @@ function advtrains.register_tracks(tracktype, def, preset)
 				rules=advtrains.meseconrules

 			}}

 		end

-		return switchfunc, mesec,

+		return rcswitchfunc, mesec,

 		{ 

 			getstate = is_state,

 			setstate = switchfunc,

 		}

 	end

-	local function make_overdef(suffix, rotation, conns, switchfunc, mesecontbl, luaautomation, in_creative_inv, drop_slope)

+	local function make_overdef(suffix, rotation, conns, rcswitchfunc, mesecontbl, luaautomation, in_creative_inv, drop_slope)

 		local img_suffix=suffix..rotation

 		return {

 			mesh = def.shared_model or (def.models_prefix.."_"..img_suffix..def.models_suffix),

@@ -293,7 +297,7 @@ function advtrains.register_tracks(tracktype, def, preset)
 			rely2=conns.rely2 or 0,

 			railheight=conns.railheight or 0,

 			

-			on_rightclick=switchfunc,

+			on_rightclick=rcswitchfunc,

 			groups = {

 				attached_node=1,

 				["advtrains_track_"..tracktype]=1,

@@ -352,9 +356,9 @@ function advtrains.register_tracks(tracktype, def, preset)
 	for suffix, conns in pairs(preset.variant) do

 		for rotid, rotation in ipairs(preset.rotation) do

 			if not def.formats[suffix] or def.formats[suffix][rotid] then

-				local switchfunc, mesecontbl, luaautomation

+				local rcswitchfunc, mesecontbl, luaautomation

 				if preset.switch[suffix] then

-					switchfunc, mesecontbl, luaautomation=make_switchfunc(preset.switch[suffix]..rotation, preset.switchmc[suffix], preset.switchst[suffix])

+					rcswitchfunc, mesecontbl, luaautomation=make_switchfunc(preset.switch[suffix]..rotation, preset.switchmc[suffix], preset.switchst[suffix])

 				end

 				local adef={}

 				if def.get_additional_definiton then

@@ -366,7 +370,7 @@ function advtrains.register_tracks(tracktype, def, preset)
 					make_overdef(

 						suffix, rotation,

 						cycle_conns(conns, rotid),

-						switchfunc, mesecontbl, luaautomation, preset.increativeinv[suffix], preset.slopenodes[suffix]

+						rcswitchfunc, mesecontbl, luaautomation, preset.increativeinv[suffix], preset.slopenodes[suffix]

 						),

 					adef

 					)

diff --git a/advtrains/advtrains/wagons.lua b/advtrains/advtrains/wagons.lua
index 28de3fa..15a0ec7 100644
--- a/advtrains/advtrains/wagons.lua
+++ b/advtrains/advtrains/wagons.lua
@@ -8,6 +8,11 @@ minetest.register_privilege("train_remove", {
 	description = "Player can remove trains not owned by player",

 	give_to_singleplayer= false,

 });

+minetest.register_privilege("train_operator", {

+	description = "Player may operate trains and switch signals. Given by default. Revoke to prevent players from griefing automated subway systems.",

+	give_to_singleplayer= true,

+	default= true,

+});

 

 local wagon={

 	collisionbox = {-0.5,-0.5,-0.5, 0.5,0.5,0.5},

@@ -242,7 +247,8 @@ function wagon:on_step(dtime)
 	--driver control

 	for seatno, seat in ipairs(self.seats) do

 		local driver=self.seatp[seatno] and minetest.get_player_by_name(self.seatp[seatno])

-		if seat.driving_ctrl_access and driver then

+		local has_driverstand=seat.driving_ctrl_access and self.seatp[seatno] and minetest.check_player_privs(self.seatp[seatno], {train_operator=true})

+		if has_driverstand and driver then

 			advtrains.update_driver_hud(driver:get_player_name(), self:train(), self.wagon_flipped)

 		elseif driver then

 			--only show the inside text

@@ -253,7 +259,7 @@ function wagon:on_step(dtime)
 			local pc=driver:get_player_control()

 			self.seatpc[seatno]=driver:get_player_control_bits()

 			

-			if seat.driving_ctrl_access then

+			if has_driverstand then

 				--regular driver stand controls

 				advtrains.on_control_change(pc, self:train(), self.wagon_flipped)

 			else