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authorShadowNinja <shadowninja@minetest.net>2015-02-27 18:05:29 -0500
committerShadowNinja <shadowninja@minetest.net>2015-03-27 15:00:48 -0400
commit93fcab952b28f4db39d9326b83f14cbd86c0cf17 (patch)
tree4a2f0fcf7341c596f50ec24ff0a5a81d43d17ccd /src/log.cpp
parent284fefb0c32e8222fadd78eeec6e7e718fe25668 (diff)
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Clean up and tweak build system
* Combine client and server man pages. * Update unit test options and available databases in man page. * Add `--worldname` to man page. * Fix a bunch of places where `"Minetest"` was used directly instead of `PROJECT_NAME`. * Disable server build by default on all operating systems. * Make `ENABLE_FREETYPE` not fail if FreeType isn't found. * Enable LevelDB, Redis, and FreeType detection by default. * Remove the `VERSION_PATCH_ORIG` hack. * Add option to search for and use system JSONCPP. * Remove broken LuaJIT version detection. * Rename `DISABLE_LUAJIT` to `ENABLE_LUAJIT`. * Rename `minetest_*` variables in `version.{h,cpp}` to `g_*`. * Clean up style of CMake files.
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-- train_related.lua
-- Occupation of track sections - mainly implementation of train callbacks

--[[
Track section occupation is saved as follows

In train:
train.il_sections = {
	[n] = {ts_id = <...> (origin = <sigd>)}
}
-- "origin" is the TCB (signal describer) the train initially entered this section

In track section
ts.trains = {
	[n] = <train_id>
}

When any inconsistency is detected, we will assume the most restrictive setup.
It will be possible to indicate a section "free" via the GUI.
]]

local ildb = advtrains.interlocking.db

local sigd_equal = advtrains.interlocking.sigd_equal

local function itexist(tbl, com)
	for _,item in ipairs(tbl) do
		if (item==com) then
			return true
		end
	end
	return false
end
local function itkexist(tbl, ikey, com)
	for _,item in ipairs(tbl) do
		if item[ikey] == com then
			return true
		end
	end
	return false
end

local function itremove(tbl, com)
	local i=1
	while i <= #tbl do
		if tbl[i] == com then
			table.remove(tbl, i)
		else
			i = i + 1
		end
	end
end
local function itkremove(tbl, ikey, com)
	local i=1
	while i <= #tbl do
		if tbl[i][ikey] == com then
			table.remove(tbl, i)
		else
			i = i + 1
		end
	end
end

local function setsection(tid, train, ts_id, ts, sigd)
	-- train
	if not train.il_sections then train.il_sections = {} end
	if not itkexist(train.il_sections, "ts_id", ts_id) then
		table.insert(train.il_sections, {ts_id = ts_id, origin = sigd})
	end
	
	-- ts
	if not ts.trains then ts.trains = {} end
	if not itexist(ts.trains, tid) then
		table.insert(ts.trains, tid)
	end
	
	-- routes
	local tcbs = advtrains.interlocking.db.get_tcbs(sigd)
	
	-- route setting - clear route state
	if ts.route then
		--atdebug(tid,"enters",ts_id,"examining Routestate",ts.route)
		if not sigd_equal(ts.route.entry, sigd) then
			-- Train entered not from the route. Locate origin and cancel route!
			atwarn("Train",tid,"hit route",ts.route.rsn,"!")
			advtrains.interlocking.route.cancel_route_from(ts.route.origin)
			atwarn("Route was cancelled.")
		else
			-- train entered route regularily. Reset route and signal
			tcbs.route_committed = nil
			tcbs.route_comitted = nil -- TODO compatibility cleanup
			tcbs.aspect = nil
			tcbs.route_origin = nil
			advtrains.interlocking.update_signal_aspect(tcbs)
			if tcbs.signal and sigd_equal(ts.route.entry, ts.route.origin) then
				if tcbs.route_auto and tcbs.routeset then
					--atdebug("Resetting route (",ts.route.origin,")")
					advtrains.interlocking.route.update_route(ts.route.origin, tcbs)
				else
					tcbs.routeset = nil
				end
			end
		end
		ts.route = nil
	end
	if tcbs.signal then
		advtrains.interlocking.route.update_route(sigd, tcbs)
	end
end

local function freesection(tid, train, ts_id, ts)
	-- train
	if not train.il_sections then train.il_sections = {} end
	itkremove(train.il_sections, "ts_id", ts_id)
	
	-- ts