aboutsummaryrefslogtreecommitdiff
path: root/src/main.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/main.h')
0 files changed, 0 insertions, 0 deletions
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-01 06:04:52 +0000
ref='#n48'>48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 
-- stoprail.lua
-- adds "stop rail". Recognized by lzb. (part of behavior is implemented there)


local function to_int(n)
	--- Disallow floating-point numbers
	local k = tonumber(n)
	if k then
		return math.floor(k)
	end
end

local function updatemeta(pos)
	local meta = minetest.get_meta(pos)
	local pe = advtrains.encode_pos(pos)
	local stdata = advtrains.lines.stops[pe]
	if not stdata then
		meta:set_string("infotext", "Error")
	end
	
	meta:set_string("infotext", "Stn. "..stdata.stn.." T. "..stdata.track)
end

local door_dropdown = {L=1, R=2, C=3}
local door_dropdown_rev = {Right="R", Left="L", Closed="C"}

local function show_stoprailform(pos, player)
	local pe = advtrains.encode_pos(pos)
	local pname = player:get_player_name()
	if minetest.is_protected(pos, pname) then
		minetest.chat_send_player(pname, "Position is protected!")
		return
	end
	
	local stdata = advtrains.lines.stops[pe]
	if not stdata then
		advtrains.lines.stops[pe] = {
					stn="", track="", doors="R", wait=10, ars={default=true}, ddelay=1,speed="M"
				}
		stdata = advtrains.lines.stops[pe]
	end
	
	local stn = advtrains.lines.stations[stdata.stn]
	local stnname = stn and stn.name or ""
	if not stdata.ddelay then
		stdata.ddelay = 1
	end
	if not stdata.speed then
		stdata.speed = "M"
	end
	
	local form = "size[8,7]"
	form = form.."style[stn,ars;font=mono]"
	form = form.."field[0.8,0.8;2,1;stn;"..attrans("Station Code")..";"..minetest.formspec_escape(stdata.stn).."]"
	form = form.."field[2.8,0.8;5,1;stnname;"..attrans("Station Name")..";"..minetest.formspec_escape(stnname).."]"
	form = form.."field[0.80,2.0;1.75,1;ddelay;"..attrans("Door Delay")..";"..minetest.formspec_escape(stdata.ddelay).."]"
	form = form.."field[2.55,2.0;1.75,1;speed;"..attrans("Dep. Speed")..";"..minetest.formspec_escape(stdata.speed).."]"
	form = form.."field[4.30,2.0;1.75,1;track;"..attrans("Track")..";"..minetest.formspec_escape(stdata.track).."]"
	form = form.."field[6.05,2.0;1.75,1;wait;"..attrans("Stop Time")..";"..stdata.wait.."]"
	form = form.."label[0.5,2.6;"..attrans("Door Side").."]"
	form = form.."dropdown[0.51,3.0;2;doors;Left,Right,Closed;"..door_dropdown[stdata.doors].."]"
	form = form.."checkbox[3.00,2.7;reverse;"..attrans("Reverse train")..";"..(stdata.reverse and "true" or "false").."]"
	form = form.."checkbox[3.00,3.1;kick;"..attrans("Kick out passengers")..";"..(stdata.kick and "true" or "false").."]"
	form = form.."textarea[0.8,4.2;7,2;ars;Trains stopping here (ARS rules);"..advtrains.interlocking.ars_to_text(stdata.ars).."]" kwa">true
end
function tp.add_single_conn(nnprefix, suffix, rotation, conns)
	local nodename=nnprefix.."_"..suffix..rotation
	for i=0,3 do
		tp.tracks[nnprefix].single_conn[((conns.conn1+4*i)%16)]={name=nodename, param2=i}
		tp.tracks[nnprefix].single_conn[((conns.conn2+4*i)%16)]={name=nodename, param2=i}
		tp.tracks[nnprefix].single_conn_1[((conns.conn1+4*i)%16)]={name=nodename, param2=i}
		tp.tracks[nnprefix].single_conn_2[((conns.conn2+4*i)%16)]={name=nodename, param2=i}
	end
	tp.tracks[nnprefix].modify[nodename]=true
end


function tp.add_worked(nnprefix, suffix, rotation, cycle_follows)
	tp.tracks[nnprefix].twcycle[suffix]=cycle_follows
	if not tp.tracks[nnprefix].twrotate[suffix] then tp.tracks[nnprefix].twrotate[suffix]={} end
	table.insert(tp.tracks[nnprefix].twrotate[suffix], rotation)
end


--[[
	rewrite algorithm.
	selection criteria: these will never be changed or even selected:
	- tracks being already connected on both sides
	- tracks that are already connected on one side but are not bendable to the desired position
	the following situations can occur:
	1. there are two more than two rails around
		1.1 there is one or more subset(s) that can be directly connected
			-> choose the first possibility
		2.2 not
			-> choose the first one and orient straight
	2. there's exactly 1 rail around
		-> choose and orient straight
	3. there's no rail around
		-> set straight
]]

local function istrackandbc(pos_p, conn)
	local tpos = pos_p
	local cnode=minetest.get_node(advtrains.dirCoordSet(tpos, conn.c))
	if advtrains.is_track_and_drives_on(cnode.name, advtrains.all_tracktypes) then
		local cconns=advtrains.get_track_connections(cnode.name, cnode.param2)
		return advtrains.conn_matches_to(conn, cconns)
	end
	--try the same 1 node below
	tpos = {x=tpos.x, y=tpos.y-1, z=tpos.z}
	cnode=minetest.get_node(advtrains.dirCoordSet(tpos, conn.c))
	if advtrains.is_track_and_drives_on(cnode.name, advtrains.all_tracktypes) then
		local cconns=advtrains.get_track_connections(cnode.name, cnode.param2)
		return advtrains.conn_matches_to(conn, cconns)
	end
	return false
end

function tp.find_already_connected(pos)
	local dnode=minetest.get_node(pos)
	local dconns=advtrains.get_track_connections(dnode.name, dnode.param2)
	local found_conn
	for connid, conn in ipairs(dconns) do
		if istrackandbc(pos, conn) then
			if found_conn then --we found one in previous iteration
				return true, true --signal that it's connected
			else
				found_conn = conn.c
			end
		end
	end
	return found_conn
end
function tp.rail_and_can_be_bent(originpos, conn)
	local pos=advtrains.dirCoordSet(originpos, conn)
	local newdir=(conn+8)%16
	local node=minetest.get_node(pos)
	if not advtrains.is_track_and_drives_on(node.name, advtrains.all_tracktypes) then
		return false
	end
	local ndef=minetest.registered_nodes[node.name]
	local nnpref = ndef and ndef.at_nnpref
	if not nnpref then return false end
	local tr=tp.tracks[nnpref]
	if not tr then return false end
	if not tr.modify[node.name] then 
		--we actually can use this rail, but only if it already points to the desired direction.
		if advtrains.is_track_and_drives_on(node.name, advtrains.all_tracktypes) then
			local cconns=advtrains.get_track_connections(node.name, node.param2)
			return advtrains.conn_matches_to(conn, cconns)
		end
	end
	-- If the rail is not allowed to be modified, also only use if already in desired direction
	if not advtrains.can_dig_or_modify_track(pos) then
		local cconns=advtrains.get_track_connections(node.name, node.param2)
		return advtrains.conn_matches_to(conn, cconns)
	end
	--rail at other end?
	local adj1, adj2=tp.find_already_connected(pos)
	if adj1 and adj2 then
		return false--dont destroy existing track
	elseif adj1 and not adj2 then
		if tr.double_conn[adj1.."_"..newdir] then
			return true--if exists, connect new rail and old end
		end
		return false
	else
		if tr.single_conn[newdir] then--just rotate old rail to right orientation
			return true
		end
		return false
	end
end
function tp.bend_rail(originpos, conn)
	local pos=advtrains.dirCoordSet(originpos, conn)
	local newdir=advtrains.oppd(conn)
	local node=minetest.get_node(pos)
	local ndef=minetest.registered_nodes[node.name]
	local nnpref = ndef and ndef.at_nnpref
	if not nnpref then return false end
	local tr=tp.tracks[nnpref]
	if not tr then return false end
	--is rail already connected? no need to bend.
	local conns=advtrains.get_track_connections(node.name, node.param2)
	if advtrains.conn_matches_to(conn, conns) then
		return
	end
	--rail at other end?
	local adj1, adj2=tp.find_already_connected(pos)
	if adj1 and adj2 then
		return false--dont destroy existing track
	elseif adj1 and not adj2 then
		if tr.double_conn[adj1.."_"..newdir] then
			advtrains.ndb.swap_node(pos, tr.double_conn[adj1.."_"..newdir])
			return true--if exists, connect new rail and old end
		end
		return false
	else
		if tr.single_conn[newdir] then--just rotate old rail to right orientation
			advtrains.ndb.swap_node(pos, tr.single_conn[newdir])
			return true
		end
		return false
	end
end
function tp.placetrack(pos, nnpref, placer, itemstack, pointed_thing, yaw)
	--1. find all rails that are likely to be connected
	local tr=tp.tracks[nnpref]
	local p_rails={}
	local p_railpos={}
	for i=0,15 do
		if tp.rail_and_can_be_bent(pos, i, nnpref) then
			p_rails[#p_rails+1]=i
			p_railpos[i] = pos
		else
			local upos = {x=pos.x, y=pos.y-1, z=pos.z}
			if tp.rail_and_can_be_bent(upos, i, nnpref) then
				p_rails[#p_rails+1]=i
				p_railpos[i] = upos
			end
		end
	end
	
	-- try double_conn
	if #p_rails > 1 then
		--iterate subsets
		for k1, conn1 in ipairs(p_rails) do
			for k2, conn2 in ipairs(p_rails) do
				if k1~=k2 then
					local dconn1 = tr.double_conn_1
					local dconn2 = tr.double_conn_2
					if not (advtrains.yawToDirection(yaw, conn1, conn2) == conn1) then
						dconn1 = tr.double_conn_2
						dconn2 = tr.double_conn_1
					end
					-- Checks are made this way round so that dconn1 has priority (this will make arrows of atc rails
					-- point in the right direction)
					local using
					if (dconn2[conn1.."_"..conn2]) then
						using = dconn2[conn1.."_"..conn2]
					end
					if (dconn1[conn1.."_"..conn2]) then
						using = dconn1[conn1.."_"..conn2]
					end
					if using then
						-- has found a fitting rail in either direction
						-- if not, continue loop
						tp.bend_rail(p_railpos[conn1], conn1, nnpref)
						tp.bend_rail(p_railpos[conn2], conn2, nnpref)
						advtrains.ndb.swap_node(pos, using)
						local nname=using.name
						if minetest.registered_nodes[nname] and minetest.registered_nodes[nname].after_place_node then
							minetest.registered_nodes[nname].after_place_node(pos, placer, itemstack, pointed_thing)
						end
						return
					end
				end
			end
		end
	end
	-- try single_conn
	if #p_rails > 0 then
		for ix, p_rail in ipairs(p_rails) do
			local sconn1 = tr.single_conn_1
			local sconn2 = tr.single_conn_2
			if not (advtrains.yawToDirection(yaw, p_rail, (p_rail+8)%16) == p_rail) then
				sconn1 = tr.single_conn_2
				sconn2 = tr.single_conn_1
			end
			if sconn1[p_rail] then
				local using = sconn1[p_rail]
				tp.bend_rail(p_railpos[p_rail], p_rail, nnpref)
				advtrains.ndb.swap_node(pos, using)
				local nname=using.name
				if minetest.registered_nodes[nname] and minetest.registered_nodes[nname].after_place_node then
					minetest.registered_nodes[nname].after_place_node(pos, placer, itemstack, pointed_thing)
				end
				return
			end
			if sconn2[p_rail] then
				local using = sconn2[p_rail]
				tp.bend_rail(p_railpos[p_rail], p_rail, nnpref)
				advtrains.ndb.swap_node(pos, using)
				local nname=using.name
				if minetest.registered_nodes[nname] and minetest.registered_nodes[nname].after_place_node then
					minetest.registered_nodes[nname].after_place_node(pos, placer, itemstack, pointed_thing)
				end
				return
			end
		end
	end
	--use default
	minetest.set_node(pos, {name=nnpref.."_"..tr.default})
	if minetest.registered_nodes[nnpref.."_"..tr.default] and minetest.registered_nodes[nnpref.."_"..tr.default].after_place_node then
		minetest.registered_nodes[nnpref.."_"..tr.default].after_place_node(pos, placer, itemstack, pointed_thing)
	end
end


function tp.register_track_placer(nnprefix, imgprefix, dispname, def)
	minetest.register_craftitem(":"..nnprefix.."_placer",{
		description = dispname,
		inventory_image = imgprefix.."_placer.png",
		wield_image = imgprefix.."_placer.png",
		groups={advtrains_trackplacer=1, digtron_on_place=1},
		liquids_pointable = def.liquids_pointable,
		on_place = function(itemstack, placer, pointed_thing)
				local name = placer:get_player_name()
				if not name then
				   return itemstack, false
				end
				if pointed_thing.type=="node" then
					local pos=pointed_thing.above
					local upos=vector.subtract(pointed_thing.above, {x=0, y=1, z=0})
					if not advtrains.check_track_protection(pos, name) then
						return itemstack, false
					end
					if minetest.registered_nodes[minetest.get_node(pos).name] and minetest.registered_nodes[minetest.get_node(pos).name].buildable_to then
						if def.suitable_substrate then
							s = def.suitable_substrate(upos)
						else
							s = minetest.registered_nodes[minetest.get_node(upos).name] and minetest.registered_nodes[minetest.get_node(upos).name].walkable
						end
						if s then
--						minetest.chat_send_all(nnprefix)
							local yaw = placer:get_look_horizontal()
							tp.placetrack(pos, nnprefix, placer, itemstack, pointed_thing, yaw)
							if not advtrains.is_creative(name) then
								itemstack:take_item()
							end
						end
					end
				end
				return itemstack, true
		end,
	})
end



minetest.register_craftitem("advtrains:trackworker",{