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mirror of https://github.com/vcmi/vcmi.git synced 2024-12-04 09:42:40 +02:00
vcmi/hch/CDefHandler.cpp
2010-07-15 16:21:53 +00:00

385 lines
9.3 KiB
C++

#include "../stdafx.h"
#include "SDL.h"
#include "CDefHandler.h"
#include <sstream>
#include "CLodHandler.h"
#include "../lib/VCMI_Lib.h"
/*
* CDefHandler.cpp, part of VCMI engine
*
* Authors: listed in file AUTHORS in main folder
*
* License: GNU General Public License v2.0 or later
* Full text of license available in license.txt file, in main folder
*
*/
static long long pow(long long a, int b)
{
if (!b) return 1;
long c = a;
while (--b)
a*=c;
return a;
}
CDefHandler::CDefHandler()
{
//FDef = NULL;
notFreeImgs = false;
}
CDefHandler::~CDefHandler()
{
//if (FDef)
//delete [] FDef;
if (notFreeImgs)
return;
for (size_t i=0; i<ourImages.size(); ++i)
{
if (ourImages[i].bitmap)
{
SDL_FreeSurface(ourImages[i].bitmap);
ourImages[i].bitmap=NULL;
}
}
}
CDefEssential::~CDefEssential()
{
for(size_t i=0; i < ourImages.size(); ++i)
SDL_FreeSurface(ourImages[i].bitmap);
}
void CDefHandler::openFromMemory(unsigned char *table, const std::string & name)
{
BMPPalette palette[256];
SDefEntry &de = * reinterpret_cast<SDefEntry *>(table);
unsigned char *p;
defName = name;
DEFType = SDL_SwapLE32(de.DEFType);
width = SDL_SwapLE32(de.width);
height = SDL_SwapLE32(de.height);
unsigned int totalBlocks = SDL_SwapLE32(de.totalBlocks);
for (unsigned int it=0;it<256;it++)
{
palette[it].R = de.palette[it].R;
palette[it].G = de.palette[it].G;
palette[it].B = de.palette[it].B;
palette[it].F = 0;
}
// The SDefEntryBlock starts just after the SDefEntry
p = reinterpret_cast<unsigned char *>(&de);
p += sizeof(de);
int totalEntries=0;
for (unsigned int z=0; z<totalBlocks; z++)
{
SDefEntryBlock &block = * reinterpret_cast<SDefEntryBlock *>(p);
unsigned int totalInBlock;
totalInBlock = SDL_SwapLE32(read_unaligned_u32(&block.totalInBlock));
for (unsigned int j=SEntries.size(); j<totalEntries+totalInBlock; j++)
SEntries.push_back(SEntry());
p = block.data;
for (unsigned int j=0; j<totalInBlock; j++)
{
char Buffer[13];
memcpy(Buffer, p, 12);
Buffer[12] = 0;
SEntries[totalEntries+j].name=Buffer;
p += 13;
}
for (unsigned int j=0; j<totalInBlock; j++)
{
SEntries[totalEntries+j].offset = SDL_SwapLE32(read_unaligned_u32(p));
p += 4;
}
//totalEntries+=totalInBlock;
for(unsigned int hh=0; hh<totalInBlock; ++hh)
{
SEntries[totalEntries].group = z;
++totalEntries;
}
}
for(unsigned int j=0; j<SEntries.size(); ++j)
{
SEntries[j].name = SEntries[j].name.substr(0, SEntries[j].name.find('.')+4);
}
//RWEntries = new unsigned int[height];
for(unsigned int i=0; i < SEntries.size(); ++i)
{
Cimage nimg;
nimg.bitmap = getSprite(i, table, palette);
nimg.imName = SEntries[i].name;
nimg.groupNumber = SEntries[i].group;
ourImages.push_back(nimg);
}
}
void CDefHandler::expand(unsigned char N,unsigned char & BL, unsigned char & BR)
{
BL = (N & 0xE0) >> 5;
BR = N & 0x1F;
}
SDL_Surface * CDefHandler::getSprite (int SIndex, const unsigned char * FDef, const BMPPalette * palette) const
{
SDL_Surface * ret=NULL;
unsigned int BaseOffset,
SpriteWidth, SpriteHeight, //format of sprite
TotalRowLength, // length of read segment
add, FullHeight,FullWidth,
RowAdd, //, NextSpriteOffset; //TODO use me
prSize,
defType2;
int LeftMargin, RightMargin, TopMargin, BottomMargin;
unsigned char SegmentType;//, BL, BR; //TODO use me
BaseOffset = SEntries[SIndex].offset;
SSpriteDef sd = * reinterpret_cast<const SSpriteDef *>(FDef + BaseOffset);
prSize = SDL_SwapLE32(sd.prSize); //TODO use me
defType2 = SDL_SwapLE32(sd.defType2);
FullWidth = SDL_SwapLE32(sd.FullWidth);
FullHeight = SDL_SwapLE32(sd.FullHeight);
SpriteWidth = SDL_SwapLE32(sd.SpriteWidth);
SpriteHeight = SDL_SwapLE32(sd.SpriteHeight);
LeftMargin = SDL_SwapLE32(sd.LeftMargin);
TopMargin = SDL_SwapLE32(sd.TopMargin);
RightMargin = FullWidth - SpriteWidth - LeftMargin;
BottomMargin = FullHeight - SpriteHeight - TopMargin;
//if(LeftMargin + RightMargin < 0)
// SpriteWidth += LeftMargin + RightMargin; //ugly construction... TODO: check how to do it nicer
if(LeftMargin<0)
SpriteWidth+=LeftMargin;
if(RightMargin<0)
SpriteWidth+=RightMargin;
// Note: this looks bogus because we allocate only FullWidth, not FullWidth+add
add = 4 - FullWidth%4;
if (add==4)
add=0;
ret = SDL_CreateRGBSurface(SDL_SWSURFACE, FullWidth, FullHeight, 8, 0, 0, 0, 0);
//int tempee2 = readNormalNr(0,4,((unsigned char *)tempee.c_str()));
BaseOffset += sizeof(SSpriteDef);
int BaseOffsetor = BaseOffset;
for(int i=0; i<256; ++i)
{
SDL_Color pr;
pr.r = palette[i].R;
pr.g = palette[i].G;
pr.b = palette[i].B;
pr.unused = palette[i].F;
(*(ret->format->palette->colors+i))=pr;
}
int ftcp=0;
// If there's a margin anywhere, just blank out the whole surface.
if (TopMargin > 0 || BottomMargin > 0 || LeftMargin > 0 || RightMargin > 0) {
memset( reinterpret_cast<char*>(ret->pixels), 0, FullHeight*FullWidth);
}
// Skip top margin
if (TopMargin > 0)
ftcp += TopMargin*(FullWidth+add);
switch(defType2)
{
case 0:
{
for (unsigned int i=0;i<SpriteHeight;i++)
{
if (LeftMargin>0)
ftcp += LeftMargin;
memcpy(reinterpret_cast<char*>(ret->pixels)+ftcp, &FDef[BaseOffset], SpriteWidth);
ftcp += SpriteWidth;
BaseOffset += SpriteWidth;
if (RightMargin>0)
ftcp += RightMargin;
}
}
break;
case 1:
{
const unsigned int * RWEntriesLoc = reinterpret_cast<const unsigned int *>(FDef+BaseOffset);
BaseOffset += sizeof(int) * SpriteHeight;
for (unsigned int i=0;i<SpriteHeight;i++)
{
BaseOffset=BaseOffsetor + SDL_SwapLE32(read_unaligned_u32(RWEntriesLoc + i));
if (LeftMargin>0)
ftcp += LeftMargin;
TotalRowLength=0;
do
{
unsigned int SegmentLength;
SegmentType=FDef[BaseOffset++];
SegmentLength=FDef[BaseOffset++] + 1;
if (SegmentType==0xFF)
{
memcpy(reinterpret_cast<char*>(ret->pixels)+ftcp, FDef + BaseOffset, SegmentLength);
BaseOffset+=SegmentLength;
}
else
{
memset(reinterpret_cast<char*>(ret->pixels)+ftcp, SegmentType, SegmentLength);
}
ftcp += SegmentLength;
TotalRowLength += SegmentLength;
}while(TotalRowLength<SpriteWidth);
RowAdd=SpriteWidth-TotalRowLength;
if (RightMargin>0)
ftcp += RightMargin;
if (add>0)
ftcp += add+RowAdd;
}
}
break;
case 2:
{
BaseOffset = BaseOffsetor + SDL_SwapLE16(read_unaligned_u16(FDef + BaseOffsetor));
for (unsigned int i=0;i<SpriteHeight;i++)
{
//BaseOffset = BaseOffsetor+RWEntries[i];
if (LeftMargin>0)
ftcp += LeftMargin;
TotalRowLength=0;
do
{
SegmentType=FDef[BaseOffset++];
unsigned char code = SegmentType / 32;
unsigned char value = (SegmentType & 31) + 1;
if(code==7)
{
memcpy(reinterpret_cast<char*>(ret->pixels)+ftcp, &FDef[BaseOffset], value);
ftcp += value;
BaseOffset += value;
}
else
{
memset(reinterpret_cast<char*>(ret->pixels)+ftcp, code, value);
ftcp += value;
}
TotalRowLength+=value;
} while(TotalRowLength<SpriteWidth);
if (RightMargin>0)
ftcp += RightMargin;
RowAdd=SpriteWidth-TotalRowLength;
if (add>0)
ftcp += add+RowAdd;
}
}
break;
case 3:
{
for (unsigned int i=0;i<SpriteHeight;i++)
{
BaseOffset = BaseOffsetor + SDL_SwapLE16(read_unaligned_u16(FDef + BaseOffsetor+i*2*(SpriteWidth/32)));
if (LeftMargin>0)
ftcp += LeftMargin;
TotalRowLength=0;
do
{
SegmentType=FDef[BaseOffset++];
unsigned char code = SegmentType / 32;
unsigned char value = (SegmentType & 31) + 1;
int len = std::min<unsigned int>(value, SpriteWidth - TotalRowLength) - std::max(0, -LeftMargin);
amax(len, 0);
if(code==7)
{
memcpy((ui8*)ret->pixels + ftcp, FDef + BaseOffset, len);
ftcp += len;
BaseOffset += len;
}
else
{
memset((ui8*)ret->pixels + ftcp, code, len);
ftcp += len;
}
TotalRowLength+=( LeftMargin>=0 ? value : value+LeftMargin );
}while(TotalRowLength<SpriteWidth);
if (RightMargin>0)
ftcp += RightMargin;
RowAdd=SpriteWidth-TotalRowLength;
if (add>0)
ftcp += add+RowAdd;
}
}
break;
default:
throw std::string("Unknown sprite format.");
break;
}
SDL_Color ttcol = ret->format->palette->colors[0];
Uint32 keycol = SDL_MapRGBA(ret->format, ttcol.r, ttcol.b, ttcol.g, ttcol.unused);
SDL_SetColorKey(ret, SDL_SRCCOLORKEY, keycol);
return ret;
};
CDefEssential * CDefHandler::essentialize()
{
CDefEssential * ret = new CDefEssential;
ret->ourImages = ourImages;
notFreeImgs = true;
return ret;
}
CDefHandler * CDefHandler::giveDef(const std::string & defName)
{
unsigned char * data = spriteh->giveFile(defName);
if(!data)
throw "bad def name!";
CDefHandler * nh = new CDefHandler();
nh->openFromMemory(data, defName);
nh->alphaTransformed = false;
delete [] data;
return nh;
}
CDefEssential * CDefHandler::giveDefEss(const std::string & defName)
{
CDefEssential * ret;
CDefHandler * temp = giveDef(defName);
ret = temp->essentialize();
delete temp;
return ret;
}