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

Files @ r7463:838c9d05e229

Branch filter:

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

r7463:838c9d05e229 733 B text/x-c Show Annotation Show as Raw Download as Raw

miham

(svn r10964) -Update: WebTranslator2 update to 2007-08-22 22:57:00
croatian - 9 fixed, 13 changed by knovak (22)
italian - 10 fixed by lorenzodv (10)
japanese - 5 fixed by ickoonite (5)
polish - 10 fixed, 1 changed by meush (11)
slovak - 77 changed by lengyel (77)
spanish - 5 fixed by eusebio (5)

/* $Id$ */

#ifndef CMD_HELPER_H
#define CMD_HELPER_H

#include "direction.h"
#include "macros.h"
#include "road.h"


template<uint N> static inline void ExtractValid();
template<> static inline void ExtractValid<1>() {}


template<typename T> struct ExtractBits;
template<> struct ExtractBits<Axis>          { static const uint Count =  1; };
template<> struct ExtractBits<DiagDirection> { static const uint Count =  2; };
template<> struct ExtractBits<RoadBits>      { static const uint Count =  4; };


template<typename T, uint N, typename U> static inline T Extract(U v)
{
	// Check if there are enough bits in v
	ExtractValid<N + ExtractBits<T>::Count <= sizeof(U) * 8>();
	return (T)GB(v, N, ExtractBits<T>::Count);
}

#endif