src/constants.h


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/*
Minetest-c55
Copyright (C) 2010 celeron55, Perttu Ahola <celeron55@gmail.com>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

#ifndef CONSTANTS_HEADER
#define CONSTANTS_HEADER

/*
	All kinds of constants.

	Cross-platform compatibility crap should go in porting.h.
*/

//#define HAXMODE 0

#define DEBUGFILE "debug.txt"

// Define for simulating the quirks of sending through internet.
// Causes the socket class to deliberately drop random packets.
// This disables unit testing of socket and connection.
#define INTERNET_SIMULATOR 0

#define CONNECTION_TIMEOUT 30

#define RESEND_TIMEOUT_MIN 0.333
#define RESEND_TIMEOUT_MAX 3.0
// resend_timeout = avg_rtt * this
#define RESEND_TIMEOUT_FACTOR 4

#define PI 3.14159

// The absolute working limit is (2^15 - viewing_range).
// I really don't want to make every algorithm to check if it's 
// going near the limit or not, so this is lower.
#define MAP_GENERATION_LIMIT (31000)

// Size of node in rendering units
#define BS (10.0)

#define MAP_BLOCKSIZE 16
/*
	This makes mesh updates too slow, as many meshes are updated during
	the main loop (related to TempMods and day/night)
*/
//#define MAP_BLOCKSIZE 32

// Sectors are split to SECTOR_HEIGHTMAP_SPLIT^2 heightmaps
#define SECTOR_HEIGHTMAP_SPLIT (MAP_BLOCKSIZE/8)

// Time after building, during which the following limit
// is in use
//#define FULL_BLOCK_SEND_ENABLE_MIN_TIME_FROM_BUILDING 2.0
// This many blocks are sent when player is building
#define LIMITED_MAX_SIMULTANEOUS_BLOCK_SENDS 0
// Override for the previous one when distance of block
// is very low
#define BLOCK_SEND_DISABLE_LIMITS_MAX_D 1

#define PLAYER_INVENTORY_SIZE (8*4)

#define SIGN_TEXT_MAX_LENGTH 50

// Whether to catch all std::exceptions.
// Assert will be called on such an event.
// In debug mode, leave these for the debugger and don't catch them.
#ifdef NDEBUG
	#define CATCH_UNHANDLED_EXCEPTIONS 1
#else
	#define CATCH_UNHANDLED_EXCEPTIONS 0
#endif

/*
	Collecting active blocks is stopped after object data
	size reaches this
*/
#define MAX_OBJECTDATA_SIZE 450

/*
	This is good to be a bit different than 0 so that water level
	is not between two MapBlocks
*/
#define WATER_LEVEL 1

// Length of cracking animation in count of images
#define CRACK_ANIMATION_LENGTH 5

// Some stuff needed by old code moved to here from heightmap.h
#define GROUNDHEIGHT_NOTFOUND_SETVALUE (-10e6)
#define GROUNDHEIGHT_VALID_MINVALUE    ( -9e6)

#endif
--trainlogic.lua
--controls train entities stuff about connecting/disconnecting/colliding trains and other things

--local print=function(t, ...) minetest.log("action", table.concat({t, ...}, " ")) minetest.chat_send_all(table.concat({t, ...}, " ")) end
local print=function() end

local benchmark=false
--printbm=function(str, t) print("[advtrains]"..str.." "..((os.clock()-t)*1000).."ms") end
local bm={}
local bmlt=0
local bmsteps=0
local bmstepint=200
printbm=function(action, ta)
	if not benchmark then return end
	local t=(os.clock()-ta)*1000
	if not bm[action] then
		bm[action]=t
	else
		bm[action]=bm[action]+t
	end
	bmlt=bmlt+t
end
function endstep()
	if not benchmark then return end
	bmsteps=bmsteps-1
	if bmsteps<=0 then
		bmsteps=bmstepint
		for key, value in pairs(bm) do
			minetest.chat_send_all(key.." "..(value/bmstepint).." ms avg.")
		end
		minetest.chat_send_all("Total time consumed by all advtrains actions per step: "..(bmlt/bmstepint).." ms avg.")
		bm={}
		bmlt=0
	end
end

advtrains.train_accel_force=2--per second and divided by number of wagons
advtrains.train_brake_force=3--per second, not divided by number of wagons
advtrains.train_emerg_force=10--for emergency brakes(when going off track)

advtrains.audit_interval=30

advtrains.all_traintypes={}
function advtrains.register_train_type(name, drives_on, max_speed)
	advtrains.all_traintypes[name]={}
	advtrains.all_traintypes[name].drives_on=drives_on
	advtrains.all_traintypes[name].max_speed=max_speed or 10
end


advtrains.trains={}
advtrains.wagon_save={}

--load initially
advtrains.fpath=minetest.get_worldpath().."/advtrains"
local file, err = io.open(advtrains.fpath, "r")
if not file then
	local er=err or "Unknown Error"
	print("[advtrains]Failed loading advtrains save file "..er)
else
	local tbl = minetest.deserialize(file:read("*a"))
	if type(tbl) == "table" then
		advtrains.trains=tbl
	end
	file:close()
end
advtrains.fpath_ws=minetest.get_worldpath().."/advtrains_wagon_save"
local file, err = io.open(advtrains.fpath_ws, "r")
if not file then
	local er=err or "Unknown Error"
	print("[advtrains]Failed loading advtrains save file "..er)
else
	local tbl = minetest.deserialize(file:read("*a"))
	if type(tbl) == "table" then
		advtrains.wagon_save=tbl
	end
	file:close()
end


advtrains.save = function()
	--print("[advtrains]saving")
	advtrains.invalidate_all_paths()
	local datastr = minetest.serialize(advtrains.trains)
	if not datastr then
		minetest.log("error", "[advtrains] Failed to serialize train data!")
		return
	end
	local file, err = io.open(advtrains.fpath, "w")
	if err then
		return err
	end
	file:write(datastr)
	file:close()