mirror of
https://github.com/ptitSeb/Serious-Engine
synced 2024-10-05 15:34:50 +02:00
9820436fbe
Touches a lot of code to remove long constants like "1L", so this patch is large and ugly, but I think it makes all those Clamp() calls look nicer in the long run. Most of the game is 64-bit clean, since we can build without assembly code now. I've marked the things that are obviously still wrong with STUBBED lines. That being said: a 64-bit build can already run the demos mostly correctly, so we're actually almost there! There are a few obvious things that are obviously wrong, to be fixed.
99 lines
5.0 KiB
C++
99 lines
5.0 KiB
C++
/* Copyright (c) 2002-2012 Croteam Ltd.
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of version 2 of the GNU General Public License as published by
|
|
the Free Software Foundation
|
|
|
|
|
|
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 SE_INCL_FIXINT_H
|
|
#define SE_INCL_FIXINT_H
|
|
#ifdef PRAGMA_ONCE
|
|
#pragma once
|
|
#endif
|
|
|
|
/*
|
|
* iInt - number of bits in integer part
|
|
* iFrac - number of bits in fractional part
|
|
* NOTE: Since 32 bit integer holds this fix int, iInt+iFrac must be 32.
|
|
*/
|
|
|
|
/*
|
|
* Template class for fixed integer with arbitrary sizes of integer and fractional parts
|
|
*/
|
|
template<int iInt, int iFrac>
|
|
class FixInt {
|
|
//implementation:
|
|
public:
|
|
SLONG slHolder; // the representation is stored here
|
|
//interface:
|
|
public:
|
|
/* Default constructor. */
|
|
inline FixInt<iInt, iFrac>(void) {};
|
|
/* Copy constructor. */
|
|
inline FixInt<iInt, iFrac>(const FixInt<iInt, iFrac> &x) { slHolder = x.slHolder; };
|
|
/* Constructor from integer. */
|
|
inline FixInt<iInt, iFrac>(SLONG sl) : slHolder(sl<<iFrac) {};
|
|
inline FixInt<iInt, iFrac>(ULONG ul) : slHolder((SLONG)(ul<<iFrac)) {};
|
|
inline FixInt<iInt, iFrac>(SWORD sw) : slHolder((SLONG)(sw<<iFrac)) {};
|
|
inline FixInt<iInt, iFrac>(UWORD uw) : slHolder((SLONG)(uw<<iFrac)) {};
|
|
inline FixInt<iInt, iFrac>(SBYTE sb) : slHolder((SLONG)(sb<<iFrac)) {};
|
|
inline FixInt<iInt, iFrac>(UBYTE ub) : slHolder((SLONG)(ub<<iFrac)) {};
|
|
//inline FixInt<iInt, iFrac>(signed int si) : slHolder((SLONG)(si<<iFrac)) {};
|
|
//inline FixInt<iInt, iFrac>(unsigned int ui) : slHolder((SLONG)(ui<<iFrac)) {};
|
|
/* Constructor from float. */
|
|
inline FixInt<iInt, iFrac>(float f) : slHolder((SLONG)(f*(1L<<iFrac))) {};
|
|
inline FixInt<iInt, iFrac>(double f) : slHolder((SLONG)(f*(1L<<iFrac))) {};
|
|
/* Set holder constructor. */
|
|
inline FixInt<iInt, iFrac>(SLONG slNewHolder, int iDummy) : slHolder(slNewHolder) {};
|
|
|
|
/* Conversion to integer (truncatenation). */
|
|
inline operator SLONG(void) const { return slHolder>>iFrac; };
|
|
/* Conversion to float (exact). */
|
|
inline operator float(void) const { return slHolder/(float) (1L<<iFrac); };
|
|
inline operator double(void) const { return slHolder/(double)(1L<<iFrac); };
|
|
|
|
/* Negation. */
|
|
inline FixInt<iInt, iFrac> operator-(void) const { return FixInt<iInt, iFrac>(-slHolder, 1); };
|
|
/* Addition. */
|
|
inline FixInt<iInt, iFrac> &operator+=(FixInt<iInt, iFrac> x) { slHolder += x.slHolder; return *this; };
|
|
inline FixInt<iInt, iFrac> operator+(FixInt<iInt, iFrac> x) const { return FixInt<iInt, iFrac>(slHolder+x.slHolder, 1); };
|
|
/* Substraction. */
|
|
inline FixInt<iInt, iFrac> &operator-=(FixInt<iInt, iFrac> x) { slHolder -= x.slHolder; return *this;};
|
|
inline FixInt<iInt, iFrac> operator-(FixInt<iInt, iFrac> x) const { return FixInt<iInt, iFrac>(slHolder-x.slHolder, 1); };
|
|
/* Multiplication. */
|
|
inline FixInt<iInt, iFrac> operator*(FixInt<iInt, iFrac> x) const { return FixInt<iInt, iFrac>( (SLONG)((((__int64) slHolder)*x.slHolder) >>iFrac), 1); };
|
|
inline FixInt<iInt, iFrac> operator*(SLONG sl) const { return FixInt<iInt, iFrac>(slHolder*sl, 1); };
|
|
friend inline FixInt<iInt, iFrac> operator*(SLONG sl, FixInt<iInt, iFrac> x){ return FixInt<iInt, iFrac>(x.slHolder*sl, 1); };
|
|
inline FixInt<iInt, iFrac> &operator*=(FixInt<iInt, iFrac> x) { return *this = *this*x; };
|
|
/* Division. */
|
|
inline FixInt<iInt, iFrac> operator/(FixInt<iInt, iFrac> x) const { return FixInt<iInt, iFrac>( (SLONG) ( (((__int64)slHolder)<<iFrac) / x.slHolder ) , 1); };
|
|
inline FixInt<iInt, iFrac> &operator/=(FixInt<iInt, iFrac> x) { return *this = *this/x; };
|
|
|
|
/* Relational operators. */
|
|
inline BOOL operator< (FixInt<iInt, iFrac> x) const { return slHolder< x.slHolder; };
|
|
inline BOOL operator<=(FixInt<iInt, iFrac> x) const { return slHolder<=x.slHolder; };
|
|
inline BOOL operator> (FixInt<iInt, iFrac> x) const { return slHolder> x.slHolder; };
|
|
inline BOOL operator>=(FixInt<iInt, iFrac> x) const { return slHolder>=x.slHolder; };
|
|
inline BOOL operator==(FixInt<iInt, iFrac> x) const { return slHolder==x.slHolder; };
|
|
inline BOOL operator!=(FixInt<iInt, iFrac> x) const { return slHolder!=x.slHolder; };
|
|
|
|
/* Rounding and truncatenation functions. */
|
|
friend inline SLONG Floor(FixInt<iInt, iFrac> x) { return (x.slHolder)>>iFrac; };
|
|
friend inline SLONG Ceil(FixInt<iInt, iFrac> x) { return (x.slHolder+(0xFFFFFFFFL>>iInt))>>iFrac; };
|
|
/* Truncatenate to fixed number of decimal bits. */
|
|
friend inline FixInt<iInt, iFrac> Trunc(FixInt<iInt, iFrac> x, int iDecimalPart) {
|
|
return FixInt<iInt, iFrac>(x.slHolder& (0xFFFFFFFF*((1<<iFrac)/iDecimalPart)), 1);};
|
|
};
|
|
|
|
|
|
#endif /* include-once check. */
|
|
|