1 files changed, 121 insertions, 0 deletions
diff --git a/advtrains/passive.lua b/advtrains/passive.lua
new file mode 100644
index 0000000..fe4790c
--- /dev/null
+++ b/advtrains/passive.lua
@@ -0,0 +1,121 @@
+-- passive.lua
+-- API to passive components, as described in passive_api.txt of advtrains_luaautomation
+-- This has been moved to the advtrains core in turn with the interlocking system,
+-- to prevent a dependency on luaautomation.
+
+local deprecation_warned = {}
+
+function advtrains.getstate(parpos, pnode)
+	local pos
+	if atlatc then
+		pos = atlatc.pcnaming.resolve_pos(parpos)
+	else
+		pos = advtrains.round_vector_floor_y(parpos)
+	end
+	if type(pos)~="table" or (not pos.x or not pos.y or not pos.z) then
+		debug.sethook()
+		error("Invalid position supplied to getstate")
+	end
+	local node=pnode or advtrains.ndb.get_node(pos)
+	local ndef=minetest.registered_nodes[node.name]
+	local st
+	if ndef and ndef.advtrains and ndef.advtrains.getstate then
+		 st=ndef.advtrains.getstate
+	elseif ndef and ndef.luaautomation and ndef.luaautomation.getstate then
+		if not deprecation_warned[node.name] then
+			minetest.log("warning", node.name.." uses deprecated definition of ATLATC functions in the 'luaautomation' field. Please move them to the 'advtrains' field!")
+		end
+		st=ndef.luaautomation.getstate
+	else
+		return nil
+	end
+	if type(st)=="function" then
+		return st(pos, node)
+	else
+		return st
+	end
+end
+
+function advtrains.setstate(parpos, newstate, pnode)
+	local pos
+	if atlatc then
+		pos = atlatc.pcnaming.resolve_pos(parpos)
+	else
+		pos = advtrains.round_vector_floor_y(parpos)
+	end
+	if type(pos)~="table" or (not pos.x or not pos.y or not pos.z) then
+		debug.sethook()
+		error("Invalid position supplied to getstate")
+	end
+	local node=pnode or advtrains.ndb.get_node(pos)
+	local ndef=minetest.registered_nodes[node.name]
+	local st
+	if ndef and ndef.advtrains and ndef.advtrains.setstate then
+		 st=ndef.advtrains.setstate
+	elseif ndef and ndef.luaautomation and ndef.luaautomation.setstate then
+		if not deprecation_warned[node.name] then
+			minetest.log("warning", node.name.." uses deprecated definition of ATLATC functions in the 'luaautomation' field. Please move them to the 'advtrains' field!")
+		end
+		st=ndef.luaautomation.setstate
+	else
+		return nil
+	end
+	
+	if advtrains.get_train_at_pos(pos) then
+		return false
+	end
+	
+	if advtrains.interlocking and advtrains.interlocking.route.has_route_lock(minetest.pos_to_string(pos)) then
+		return false
+	end
+	
+	st(pos, node, newstate)
+	return true
+end
+
+function advtrains.is_passive(parpos, pnode)
+	local pos
+	if atlatc then
+		pos = atlatc.pcnaming.resolve_pos(parpos)
+	else
+		pos = advtrains.round_vector_floor_y(parpos)
+	end
+	if type(pos)~="table" or (not pos.x or not pos.y or not pos.z) then
+		debug.sethook()
+		error("Invalid position supplied to getstate")
+	end
+	local node=pnode or advtrains.ndb.get_node(pos)
+	local ndef=minetest.registered_nodes[node.name]
+	if ndef and ndef.advtrains and ndef.advtrains.getstate then
+		return true
+	elseif ndef and ndef.luaautomation and ndef.luaautomation.getstate then
+		if not deprecation_warned[node.name] then
+			minetest.log("warning", node.name.." uses deprecated definition of ATLATC functions in the 'luaautomation' field. Please move them to the 'advtrains' field!")
+		end
+		return true
+	else
+		return false
+	end
+end
+
+-- switches a node back to fallback state, if defined. Doesn't support pcnaming.
+function advtrains.set_fallback_state(pos, pnode)
+	local node=pnode or advtrains.ndb.get_node(pos)
+	local ndef=minetest.registered_nodes[node.name]
+	local st
+	if ndef and ndef.advtrains and ndef.advtrains.setstate
+			and ndef.advtrains.fallback_state then
+		if advtrains.get_train_at_pos(pos) then
+			return false
+		end
+		
+		if advtrains.interlocking and advtrains.interlocking.route.has_route_lock(minetest.pos_to_string(pos)) then
+			return false
+		end
+		
+		ndef.advtrains.setstate(pos, node, ndef.advtrains.fallback_state)
+		return true
+	end
+	
+	
+end