cpp/openttd-patchpack/source Files · src/rail_type.h

Files @ r25014:e1f1bf3a062e

Branch filter:

Location: cpp/openttd-patchpack/source/src/rail_type.h

r25014:e1f1bf3a062e 2.4 KiB text/x-c Show Annotation Show as Raw Download as Raw

Patric Stout

Add: [Video] move GameLoop into its own thread

This allows drawing to happen while the GameLoop is doing an
iteration too.

Sadly, not much drawing currently can be done while the GameLoop
is running, as for example PollEvent() or UpdateWindows() can
influence the game-state. As such, they first need to acquire a
lock on the game-state before they can be called.

Currently, the main advantage is the time spend in Paint(), which
for non-OpenGL drivers can be a few milliseconds. For OpenGL this
is more like 0.05 milliseconds; in these instances this change
doesn't add any benefits for now.

This is an alternative to the former "draw-thread", which moved
the drawing in a thread for some OSes. It has similar performance
gain as this does, although this implementation allows for more
finer control over what suffers when the GameLoop takes too
long: drawing or the next GameLoop. For now they both suffer
equally.

/*
 * This file is part of OpenTTD.
 * OpenTTD 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, version 2.
 * OpenTTD 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 OpenTTD. If not, see <http://www.gnu.org/licenses/>.
 */

/** @file rail_type.h The different types of rail */

#ifndef RAIL_TYPE_H
#define RAIL_TYPE_H

#include "core/enum_type.hpp"

typedef uint32 RailTypeLabel;

static const RailTypeLabel RAILTYPE_RAIL_LABEL     = 'RAIL';
static const RailTypeLabel RAILTYPE_ELECTRIC_LABEL = 'ELRL';
static const RailTypeLabel RAILTYPE_MONO_LABEL     = 'MONO';
static const RailTypeLabel RAILTYPE_MAGLEV_LABEL   = 'MGLV';

/**
 * Enumeration for all possible railtypes.
 *
 * This enumeration defines all 4 possible railtypes.
 */
enum RailType : byte {
	RAILTYPE_BEGIN    = 0,          ///< Used for iterations
	RAILTYPE_RAIL     = 0,          ///< Standard non-electric rails
	RAILTYPE_ELECTRIC = 1,          ///< Electric rails
	RAILTYPE_MONO     = 2,          ///< Monorail
	RAILTYPE_MAGLEV   = 3,          ///< Maglev
	RAILTYPE_END      = 64,         ///< Used for iterations
	INVALID_RAILTYPE  = 0xFF,       ///< Flag for invalid railtype
};

/** Allow incrementing of Track variables */
DECLARE_POSTFIX_INCREMENT(RailType)
/** Define basic enum properties */
template <> struct EnumPropsT<RailType> : MakeEnumPropsT<RailType, byte, RAILTYPE_BEGIN, RAILTYPE_END, INVALID_RAILTYPE, 6> {};

/**
 * The different railtypes we support, but then a bitmask of them.
 * @note Must be treated as a uint64 type, narrowing it causes bit membership tests to give wrong results, as in bug #6951.
 */
enum RailTypes : uint64 {
	RAILTYPES_NONE     = 0,                      ///< No rail types
	RAILTYPES_RAIL     = 1 << RAILTYPE_RAIL,     ///< Non-electrified rails
	RAILTYPES_ELECTRIC = 1 << RAILTYPE_ELECTRIC, ///< Electrified rails
	RAILTYPES_MONO     = 1 << RAILTYPE_MONO,     ///< Monorail!
	RAILTYPES_MAGLEV   = 1 << RAILTYPE_MAGLEV,   ///< Ever fast maglev
	INVALID_RAILTYPES  = UINT64_MAX,             ///< Invalid railtypes
};
DECLARE_ENUM_AS_BIT_SET(RailTypes)

#endif /* RAIL_TYPE_H */