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Initial commit of Command & Conquer Renegade source code.
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LFeenanEA
174
Code/wwphys/vistable.h
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174
Code/wwphys/vistable.h
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/*
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** Command & Conquer Renegade(tm)
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** Copyright 2025 Electronic Arts Inc.
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**
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** This program is free software: you can redistribute it and/or modify
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** it under the terms of the GNU General Public License as published by
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** the Free Software Foundation, either version 3 of the License, or
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** (at your option) any later version.
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**
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** This program is distributed in the hope that it will be useful,
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** but WITHOUT ANY WARRANTY; without even the implied warranty of
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** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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** GNU General Public License for more details.
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**
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** You should have received a copy of the GNU General Public License
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** along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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/***********************************************************************************************
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*** C O N F I D E N T I A L --- W E S T W O O D S T U D I O S ***
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***********************************************************************************************
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* *
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* Project Name : WWPhys *
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* *
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* $Archive:: /Commando/Code/wwphys/vistable.h $*
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* *
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* Author:: Greg Hjelstrom *
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* *
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* $Modtime:: 8/13/00 11:43a $*
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* *
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* $Revision:: 16 $*
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* *
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*---------------------------------------------------------------------------------------------*
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* Functions: *
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* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
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#if defined(_MSC_VER)
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#pragma once
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#endif
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#ifndef VISTABLE_H
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#define VISTABLE_H
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#include "vector.h"
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#include "bittype.h"
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#include "refcount.h"
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#include "multilist.h"
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#include "wwdebug.h"
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class ChunkLoadClass;
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class ChunkSaveClass;
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class CompressedVisTableClass;
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/*
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** VisTableClass
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** This is a bit vector which contains a bit for each static node in the world indicating
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** whether that node can be seen from the current "vis-sector"
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*/
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class VisTableClass : public RefCountClass, public MultiListObjectClass
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{
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public:
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VisTableClass(unsigned bitcount,int id);
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VisTableClass(CompressedVisTableClass * ctable,int bitcount,int id);
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VisTableClass(const VisTableClass & that);
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~VisTableClass(void);
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VisTableClass & operator = (const VisTableClass & that);
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int Get_Bit_Count(void) const { return BitCount; }
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void Reset_All(void);
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void Set_All(void);
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int Get_Bit(int i) const;
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void Set_Bit(int i,bool onoff);
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void Delete_Bit(int i);
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void Merge(const VisTableClass & that);
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void Invert(void);
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bool Is_Equal_To(const VisTableClass & that);
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int Count_Differences(const VisTableClass & that);
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int Count_True_Bits(void);
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float Match_Fraction(const VisTableClass & that);
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void Set_Vis_Sector_ID(int id) { VisSectorID = id; }
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int Get_Vis_Sector_ID(void) { return VisSectorID; }
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void Set_Time_Stamp(int timestamp) { Timestamp = timestamp; }
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int Get_Time_Stamp(void) const { return Timestamp; }
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protected:
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void Alloc_Buffer(int bitcount);
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int Get_Byte_Count(void) const;
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int Get_Long_Count(void) const;
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uint8 * Get_Bytes(void) const;
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uint32 * Get_Longs(void) const;
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int BitCount;
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uint32 * Buffer;
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int VisSectorID;
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int Timestamp;
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// Not implemented:
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bool operator == (const VisTableClass & that);
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friend class CompressedVisTableClass;
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};
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/*
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** CompressedVisTableClass
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** This is the form that pvs data is stored in memory when it is not being used. It
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** is basically a wrapper around an allocated array with functions to compress and
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** decompress to/from a VisTableClass and functions for saving and loading.
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*/
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class CompressedVisTableClass
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{
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public:
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CompressedVisTableClass(void);
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CompressedVisTableClass(VisTableClass * bits);
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CompressedVisTableClass(const CompressedVisTableClass &that);
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~CompressedVisTableClass(void);
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const CompressedVisTableClass &operator= (const CompressedVisTableClass &that);
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void Load(void* hfile);
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void Save(void* hfile);
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void Load(ChunkLoadClass & cload);
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void Save(ChunkSaveClass & csave);
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protected:
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int Get_Byte_Count(void) const;
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uint8 * Get_Bytes(void);
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void Compress(uint8 * src_buffer,int src_size);
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void Decompress(uint8 * decomp_buffer,int decomp_size);
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int BufferSize;
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uint8 * Buffer;
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// Not implemented:
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bool operator == (const CompressedVisTableClass & that);
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friend class VisTableClass;
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};
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inline int VisTableClass::Get_Bit(int i) const
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{
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WWASSERT(Buffer != NULL);
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WWASSERT(i < BitCount);
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return (Buffer[i>>5] & (0x80000000u >> (i & 0x1F)));
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}
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inline void VisTableClass::Set_Bit(int i,bool onoff)
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{
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WWASSERT(Buffer != NULL);
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WWASSERT(i < BitCount);
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if (onoff) {
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Buffer[i>>5] |= (0x80000000u >> (i & 0x01F));
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} else {
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Buffer[i>>5] &= ~(0x80000000u >> (i & 0x01F));
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}
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}
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#endif
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