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path: root/advtrains_luaautomation/atc_rail.lua
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-- atc_rail.lua
-- registers and handles the ATC rail. Active component.
-- This is the only component that can interface with trains, so train interface goes here too.

--Using subtable
local r={}

function r.fire_event(pos, evtdata)
	
	local ph=minetest.pos_to_string(pos)
	local railtbl = atlatc.active.nodes[ph]
	
	if not railtbl then
		atwarn("LuaAutomation ATC interface rail at",ph,": Data not in memory! Please visit position and click 'Save'!")
		return
	end
	
	
	local arrowconn = railtbl.arrowconn
	if not arrowconn then
		atwarn("LuaAutomation ATC interface rail at",ph,": Incomplete Data! Please visit position and click 'Save'!")
		return
	end
	
	--prepare ingame API for ATC. Regenerate each time since pos needs to be known
	--If no train, then return false.
	local train_id=advtrains.get_train_at_pos(pos)
	local train, atc_arrow, tvel
	if train_id then train=advtrains.trains[train_id] end
	if train then 
		if not train.path then
			--we happened to get in between an invalidation step
			--delay
			atlatc.interrupt.add(0,pos,evtdata)
			return
		end
		local index = advtrains.path_lookup(train, pos)
				
		local iconnid = 1
		if index then
			iconnid = train.path_cn[index]
		else
			atwarn("ATC rail at", pos, ": Rail not on train's path! Can't determine arrow direction. Assuming +!")
		end
		atc_arrow = iconnid == 1
		
		tvel=train.velocity
	end
	local customfct={
		atc_send = function(cmd)
			if not train_id then return false end
			assertt(cmd, "string")
			advtrains.atc.train_reset_command(train_id)
			train.atc_command=cmd
			train.atc_arrow=atc_arrow
			return true
		end,
		set_line = function(line)
		   train.line = line
		   return true
		end,
		atc_reset = function(cmd)
			if not train_id then return false end
			assertt(cmd, "string")
			advtrains.atc.train_reset_command(train_id)
			return true
		end,
		atc_arrow = atc_arrow,
		atc_id = train_id,
		atc_speed = tvel,
		atc_set_text_outside = function(text)
			if not train_id then return false end
			if text then assertt(text, "string") end
			advtrains.trains[train_id].text_outside=text
			return true
		end,
		atc_set_text_inside = function(text)
			if not train_id then return false end
			if text then assertt(text, "string") end
			advtrains.trains[train_id].text_inside=text
			return true
		end,
	}
	
	atlatc.active.run_in_env(pos, evtdata, customfct)
	
end

advtrains.register_tracks("default", {
	nodename_prefix="advtrains_luaautomation:dtrack",
	texture_prefix="advtrains_dtrack_atc",
	models_prefix="advtrains_dtrack",
	models_suffix=".b3d",
	shared_texture="advtrains_dtrack_shared_atc.png",
	description=atltrans("LuaAutomation ATC Rail"),
	formats={},
	get_additional_definiton = function(def, preset, suffix, rotation)
		return {
			after_place_node = atlatc.active.after_place_node,
			after_dig_node = atlatc.active.after_dig_node,

			on_receive_fields = function(pos, ...)
				atlatc.active.on_receive_fields(pos, ...)
				
				--set arrowconn (for ATC)
				local ph=minetest.pos_to_string(pos)
				local _, conns=advtrains.get_rail_info_at(pos, advtrains.all_tracktypes)
				atlatc.active.nodes[ph].arrowconn=conns[1].c
			end,

			advtrains = {
				on_train_enter = function(pos, train_id)
					--do async. Event is fired in train steps
					atlatc.interrupt.add(0, pos, {type="train", train=true, id=train_id})
				end,
			},
			luaautomation = {
				fire_event=r.fire_event
			},
			digiline = {
				receptor = {},
				effector = {
					action = atlatc.active.on_digiline_receive
				},
			},
		}
	end,
}, advtrains.trackpresets.t_30deg_straightonly)


atlatc.rail = r
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/*
** $Id: luaconf.h,v 1.82.1.7 2008/02/11 16:25:08 roberto Exp $
** Configuration file for Lua
** See Copyright Notice in lua.h
*/


#ifndef lconfig_h
#define lconfig_h

#include <limits.h>
#include <stddef.h>


/*
** ==================================================================
** Search for "@@" to find all configurable definitions.
** ===================================================================
*/


/*
@@ LUA_ANSI controls the use of non-ansi features.
** CHANGE it (define it) if you want Lua to avoid the use of any
** non-ansi feature or library.
*/
#if defined(__STRICT_ANSI__)
#define LUA_ANSI
#endif


#if !defined(LUA_ANSI) && defined(_WIN32)
#define LUA_WIN
#endif

#if defined(LUA_USE_LINUX)
#define LUA_USE_POSIX
#define LUA_USE_DLOPEN		/* needs an extra library: -ldl */
#define LUA_USE_READLINE	/* needs some extra libraries */
#endif

#if defined(LUA_USE_MACOSX)
#define LUA_USE_POSIX
#define LUA_DL_DYLD		/* does not need extra library */
#endif



/*
@@ LUA_USE_POSIX includes all functionallity listed as X/Open System
@* Interfaces Extension (XSI).
** CHANGE it (define it) if your system is XSI compatible.
*/
#if defined(LUA_USE_POSIX)
#define LUA_USE_MKSTEMP
#define LUA_USE_ISATTY
#define LUA_USE_POPEN
#define LUA_USE_ULONGJMP
#endif


/*
@@ LUA_PATH and LUA_CPATH are the names of the environment variables that
@* Lua check to set its paths.
@@ LUA_INIT is the name of the environment variable that Lua
@* checks for initialization code.
** CHANGE them if you want different names.
*/
#define LUA_PATH        "LUA_PATH"
#define LUA_CPATH       "LUA_CPATH"
#define LUA_INIT	"LUA_INIT"


/*
@@ LUA_PATH_DEFAULT is the default path that Lua uses to look for
@* Lua libraries.
@@ LUA_CPATH_DEFAULT is the default path that Lua uses to look for
@* C libraries.
** CHANGE them if your machine has a non-conventional directory
** hierarchy or if you want to install your libraries in
** non-conventional directories.
*/
#if defined(_WIN32)
/*
** In Windows, any exclamation mark ('!') in the path is replaced by the
** path of the directory of the executable file of the current process.
*/
#define LUA_LDIR	"!\\lua\\"
#define LUA_CDIR	"!\\"
#define LUA_PATH_DEFAULT  \
		".\\?.lua;"  LUA_LDIR"?.lua;"  LUA_LDIR"?\\init.lua;" \
		             LUA_CDIR"?.lua;"  LUA_CDIR"?\\init.lua"
#define LUA_CPATH_DEFAULT \
	".\\?.dll;"  LUA_CDIR"?.dll;" LUA_CDIR"loadall.dll"

#else
#define LUA_ROOT	"/usr/local/"
#define LUA_LDIR	LUA_ROOT "share/lua/5.1/"
#define LUA_CDIR	LUA_ROOT "lib/lua/5.1/"
#define LUA_PATH_DEFAULT  \
		"./?.lua;"  LUA_LDIR"?.lua;"  LUA_LDIR"?/init.lua;" \
		            LUA_CDIR"?.lua;"  LUA_CDIR"?/init.lua"
#define LUA_CPATH_DEFAULT \
	"./?.so;"  LUA_CDIR"?.so;" LUA_CDIR"loadall.so"
#endif


/*
@@ LUA_DIRSEP is the directory separator (for submodules).
** CHANGE it if your machine does not use "/" as the directory separator
** and is not Windows. (On Windows Lua automatically uses "\".)
*/
#if defined(_WIN32)
#define LUA_DIRSEP	"\\"
#else
#define LUA_DIRSEP	"/"
#endif


/*
@@ LUA_PATHSEP is the character that separates templates in a path.
@@ LUA_PATH_MARK is the string that marks the substitution points in a
@* template.
@@ LUA_EXECDIR in a Windows path is replaced by the executable's
@* directory.
@@ LUA_IGMARK is a mark to ignore all before it when bulding the
@* luaopen_ function name.
** CHANGE them if for some reason your system cannot use those
** characters. (E.g., if one of those characters is a common character
** in file/directory names.) Probably you do not need to change them.
*/
#define LUA_PATHSEP	";"
#define LUA_PATH_MARK	"?"
#define LUA_EXECDIR	"!"
#define LUA_IGMARK	"-"


/*
@@ LUA_INTEGER is the integral type used by lua_pushinteger/lua_tointeger.
** CHANGE that if ptrdiff_t is not adequate on your machine. (On most
** machines, ptrdiff_t gives a good choice between int or long.)
*/
#define LUA_INTEGER	ptrdiff_t


/*
@@ LUA_API is a mark for all core API functions.
@@ LUALIB_API is a mark for all standard library functions.
** CHANGE them if you need to define those functions in some special way.
** For instance, if you want to create one Windows DLL with the core and
** the libraries, you may want to use the following definition (define
** LUA_BUILD_AS_DLL to get it).
*/
#if defined(LUA_BUILD_AS_DLL)

#if defined(LUA_CORE) || defined(LUA_LIB)
#define LUA_API __declspec(dllexport)
#else
#define LUA_API __declspec(dllimport)
#endif

#else

#define LUA_API		extern

#endif

/* more often than not the libs go together with the core */
#define LUALIB_API	LUA_API


/*
@@ LUAI_FUNC is a mark for all extern functions that are not to be
@* exported to outside modules.
@@ LUAI_DATA is a mark for all extern (const) variables that are not to
@* be exported to outside modules.
** CHANGE them if you need to mark them in some special way. Elf/gcc
** (versions 3.2 and later) mark them as "hidden" to optimize access
** when Lua is compiled as a shared library.
*/
#if defined(luaall_c)
#define LUAI_FUNC	static
#define LUAI_DATA	/* empty */

#elif defined(__GNUC__) && ((__GNUC__*100 + __GNUC_MINOR__) >= 302) && \
      defined(__ELF__)
#define LUAI_FUNC	__attribute__((visibility("hidden"))) extern
#define LUAI_DATA	LUAI_FUNC

#else
#define LUAI_FUNC	extern
#define LUAI_DATA	extern
#endif



/*
@@ LUA_QL describes how error messages quote program elements.
** CHANGE it if you want a different appearance.
*/
#define LUA_QL(x)	"'" x "'"
#define LUA_QS		LUA_QL("%s")


/*
@@ LUA_IDSIZE gives the maximum size for the description of the source
@* of a function in debug information.
** CHANGE it if you want a different size.
*/
#define LUA_IDSIZE	60


/*
** {==================================================================
** Stand-alone configuration
** ===================================================================
*/

#if defined(lua_c) || defined(luaall_c)

/*
@@ lua_stdin_is_tty detects whether the standard input is a 'tty' (that
@* is, whether we're running lua interactively).
** CHANGE it if you have a better definition for non-POSIX/non-Windows
** systems.
*/
#if defined(LUA_USE_ISATTY)
#include <unistd.h>
#define lua_stdin_is_tty()	isatty(0)
#elif defined(LUA_WIN)
#include <io.h>
#include <stdio.h>
#define lua_stdin_is_tty()	_isatty(_fileno(stdin))
#else
#define lua_stdin_is_tty()	1  /* assume stdin is a tty */
#endif


/*
@@ LUA_PROMPT is the default prompt used by stand-alone Lua.
@@ LUA_PROMPT2 is the default continuation prompt used by stand-alone Lua.
** CHANGE them if you want different prompts. (You can also change the
** prompts dynamically, assigning to globals _PROMPT/_PROMPT2.)
*/
#define LUA_PROMPT		"> "
#define LUA_PROMPT2		">> "


/*
@@ LUA_PROGNAME is the default name for the stand-alone Lua program.
** CHANGE it if your stand-alone interpreter has a different name and
** your system is not able to detect that name automatically.
*/
#define LUA_PROGNAME		"lua"


/*
@@ LUA_MAXINPUT is the maximum length for an input line in the
@* stand-alone interpreter.
** CHANGE it if you need longer lines.
*/
#define LUA_MAXINPUT	512


/*
@@ lua_readline defines how to show a prompt and then read a line from
@* the standard input.
@@ lua_saveline defines how to "save" a read line in a "history".
@@ lua_freeline defines how to free a line read by lua_readline.
** CHANGE them if you want to improve this functionality (e.g., by using
** GNU readline and history facilities).
*/
#if defined(LUA_USE_READLINE)
#include <stdio.h>
#include <readline/readline.h>
#include <readline/history.h>
#define lua_readline(L,b,p)	((void)L, ((b)=readline(p)) != NULL)
#define lua_saveline(L,idx) \
	if (lua_strlen(L,idx) > 0)  /* non-empty line? */ \
	  add_history(lua_tostring(L, idx));  /* add it to history */
#define lua_freeline(L,b)	((void)L, free(b))
#else
#define lua_readline(L,b,p)	\
	((void)L, fputs(p, stdout), fflush(stdout),  /* show prompt */ \
	fgets(b, LUA_MAXINPUT, stdin) != NULL)  /* get line */
#define lua_saveline(L,idx)	{ (void)L; (void)idx; }
#define lua_freeline(L,b)	{ (void)L; (void)b; }
#endif

#endif

/* }================================================================== */


/*
@@ LUAI_GCPAUSE defines the default pause between garbage-collector cycles
@* as a percentage.
** CHANGE it if you want the GC to run faster or slower (higher values
** mean larger pauses which mean slower collection.) You can also change
** this value dynamically.
*/
#define LUAI_GCPAUSE	200  /* 200% (wait memory to double before next GC) */


/*
@@ LUAI_GCMUL defines the default speed of garbage collection relative to
@* memory allocation as a percentage.
** CHANGE it if you want to change the granularity of the garbage
** collection. (Higher values mean coarser collections. 0 represents
** infinity, where each step performs a full collection.) You can also
** change this value dynamically.
*/
#define LUAI_GCMUL	200 /* GC runs 'twice the speed' of memory allocation */



/*
@@ LUA_COMPAT_GETN controls compatibility with old getn behavior.
** CHANGE it (define it) if you want exact compatibility with the
** behavior of setn/getn in Lua 5.0.
*/
#undef LUA_COMPAT_GETN

/*
@@ LUA_COMPAT_LOADLIB controls compatibility about global loadlib.
** CHANGE it to undefined as soon as you do not need a global 'loadlib'
** function (the function is still available as 'package.loadlib').
*/
#undef LUA_COMPAT_LOADLIB

/*
@@ LUA_COMPAT_VARARG controls compatibility with old vararg feature.
** CHANGE it to undefined as soon as your programs use only '...' to
** access vararg parameters (instead of the old 'arg' table).
*/
#define LUA_COMPAT_VARARG

/*
@@ LUA_COMPAT_MOD controls compatibility with old math.mod function.
** CHANGE it to undefined as soon as your programs use 'math.fmod' or
** the new '%' operator instead of 'math.mod'.
*/
#define LUA_COMPAT_MOD

/*
@@ LUA_COMPAT_LSTR controls compatibility with old long string nesting
@* facility.
** CHANGE it to 2 if you want the old behaviour, or undefine it to turn
** off the advisory error when nesting [[...]].
*/
#define LUA_COMPAT_LSTR		1

/*
@@ LUA_COMPAT_GFIND controls compatibility with old 'string.gfind' name.
** CHANGE it to undefined as soon as you rename 'string.gfind' to
** 'string.gmatch'.
*/
#define LUA_COMPAT_GFIND

/*
@@ LUA_COMPAT_OPENLIB controls compatibility with old 'luaL_openlib'
@* behavior.
** CHANGE it to undefined as soon as you replace to 'luaL_register'
** your uses of 'luaL_openlib'
*/
#define LUA_COMPAT_OPENLIB



/*
@@ luai_apicheck is the assert macro used by the Lua-C API.
** CHANGE luai_apicheck if you want Lua to perform some checks in the
** parameters it gets from API calls. This may slow down the interpreter
** a bit, but may be quite useful when debugging C code that interfaces
** with Lua. A useful redefinition is to use assert.h.
*/
#if defined(LUA_USE_APICHECK)
#include <assert.h>
#define luai_apicheck(L,o)	{ (void)L; assert(o); }
#else
#define luai_apicheck(L,o)	{ (void)L; }
#endif


/*
@@ LUAI_BITSINT defines the number of bits in an int.
** CHANGE here if Lua cannot automatically detect the number of bits of
** your machine. Probably you do not need to change this.
*/
/* avoid overflows in comparison */
#if INT_MAX-20 < 32760
#define LUAI_BITSINT	16
#elif INT_MAX > 2147483640L
/* int has at least 32 bits */
#define LUAI_BITSINT	32
#else
#error "you must define LUA_BITSINT with number of bits in an integer"
#endif


/*
@@ LUAI_UINT32 is an unsigned integer with at least 32 bits.
@@ LUAI_INT32 is an signed integer with at least 32 bits.
@@ LUAI_UMEM is an unsigned integer big enough to count the total
@* memory used by Lua.
@@ LUAI_MEM is a signed integer big enough to count the total memory
@* used by Lua.
** CHANGE here if for some weird reason the default definitions are not
** good enough for your machine. (The definitions in the 'else'
** part always works, but may waste space on machines with 64-bit
** longs.) Probably you do not need to change this.
*/
#if LUAI_BITSINT >= 32
#define LUAI_UINT32	unsigned int
#define LUAI_INT32	int
#define LUAI_MAXINT32	INT_MAX
#define LUAI_UMEM	size_t
#define LUAI_MEM	ptrdiff_t
#else
/* 16-bit ints */
#define LUAI_UINT32	unsigned long
#define LUAI_INT32	long
#define LUAI_MAXINT32	LONG_MAX
#define LUAI_UMEM	unsigned long
#define LUAI_MEM	long
#endif


/*
@@ LUAI_MAXCALLS limits the number of nested calls.
** CHANGE it if you need really deep recursive calls. This limit is
** arbitrary; its only purpose is to stop infinite recursion before
** exhausting memory.
*/
#define LUAI_MAXCALLS	20000


/*
@@ LUAI_MAXCSTACK limits the number of Lua stack slots that a C function
@* can use.
** CHANGE it if you need lots of (Lua) stack space for your C
** functions. This limit is arbitrary; its only purpose is to stop C
** functions to consume unlimited stack space. (must be smaller than
** -LUA_REGISTRYINDEX)
*/
#define LUAI_MAXCSTACK	8000



/*
** {==================================================================
** CHANGE (to smaller values) the following definitions if your system
** has a small C stack. (Or you may want to change them to larger
** values if your system has a large C stack and these limits are
** too rigid for you.) Some of these constants control the size of
** stack-allocated arrays used by the compiler or the interpreter, while
** others limit the maximum number of recursive calls that the compiler
** or the interpreter can perform. Values too large may cause a C stack
** overflow for some forms of deep constructs.
** ===================================================================
*/


/*
@@ LUAI_MAXCCALLS is the maximum depth for nested C calls (short) and
@* syntactical nested non-terminals in a program.
*/
#define LUAI_MAXCCALLS		200


/*
@@ LUAI_MAXVARS is the maximum number of local variables per function
@* (must be smaller than 250).
*/
#define LUAI_MAXVARS		200


/*