mirror of
https://github.com/vcmi/vcmi.git
synced 2024-12-26 22:57:00 +02:00
381 lines
8.8 KiB
C++
381 lines
8.8 KiB
C++
#include "StdInc.h"
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#include "SDL.h"
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#include "CDefHandler.h"
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#include "../lib/filesystem/Filesystem.h"
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#include "../lib/VCMI_Lib.h"
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#include "CBitmapHandler.h"
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#include "gui/SDL_Extensions.h"
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/*
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* CDefHandler.cpp, part of VCMI engine
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*
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* Authors: listed in file AUTHORS in main folder
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*
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* License: GNU General Public License v2.0 or later
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* Full text of license available in license.txt file, in main folder
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*
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*/
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#ifdef unused
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static long long pow(long long a, int b)
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{
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if (!b) return 1;
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long c = a;
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while (--b)
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a*=c;
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return a;
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}
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#endif
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CDefHandler::CDefHandler()
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{
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notFreeImgs = false;
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}
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CDefHandler::~CDefHandler()
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{
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if (notFreeImgs)
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return;
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for (auto & elem : ourImages)
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{
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if (elem.bitmap)
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{
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SDL_FreeSurface(elem.bitmap);
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elem.bitmap=nullptr;
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}
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}
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}
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CDefEssential::~CDefEssential()
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{
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for(auto & elem : ourImages)
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SDL_FreeSurface(elem.bitmap);
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}
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void CDefHandler::openFromMemory(ui8 *table, const std::string & name)
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{
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SDL_Color palette[256];
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SDefEntry &de = * reinterpret_cast<SDefEntry *>(table);
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ui8 *p;
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defName = name;
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DEFType = read_le_u32(&de.DEFType);
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width = read_le_u32(&de.width);
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height = read_le_u32(&de.height);
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ui32 totalBlocks = read_le_u32(&de.totalBlocks);
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for (ui32 it=0;it<256;it++)
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{
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palette[it].r = de.palette[it].R;
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palette[it].g = de.palette[it].G;
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palette[it].b = de.palette[it].B;
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palette[it].a = SDL_ALPHA_OPAQUE;
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}
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// The SDefEntryBlock starts just after the SDefEntry
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p = reinterpret_cast<ui8 *>(&de);
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p += sizeof(de);
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int totalEntries=0;
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for (ui32 z=0; z<totalBlocks; z++)
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{
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SDefEntryBlock &block = * reinterpret_cast<SDefEntryBlock *>(p);
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ui32 totalInBlock;
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totalInBlock = read_le_u32(&block.totalInBlock);
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for (ui32 j=SEntries.size(); j<totalEntries+totalInBlock; j++)
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SEntries.push_back(SEntry());
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p = block.data;
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for (ui32 j=0; j<totalInBlock; j++)
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{
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char Buffer[13];
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memcpy(Buffer, p, 12);
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Buffer[12] = 0;
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SEntries[totalEntries+j].name=Buffer;
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p += 13;
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}
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for (ui32 j=0; j<totalInBlock; j++)
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{
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SEntries[totalEntries+j].offset = read_le_u32(p);
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p += 4;
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}
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//totalEntries+=totalInBlock;
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for(ui32 hh=0; hh<totalInBlock; ++hh)
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{
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SEntries[totalEntries].group = z;
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++totalEntries;
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}
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}
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for(auto & elem : SEntries)
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{
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elem.name = elem.name.substr(0, elem.name.find('.')+4);
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}
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//RWEntries = new ui32[height];
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for(ui32 i=0; i < SEntries.size(); ++i)
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{
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Cimage nimg;
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nimg.bitmap = getSprite(i, table, palette);
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nimg.imName = SEntries[i].name;
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nimg.groupNumber = SEntries[i].group;
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ourImages.push_back(nimg);
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}
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}
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SDL_Surface * CDefHandler::getSprite (int SIndex, const ui8 * FDef, const SDL_Color * palette) const
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{
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SDL_Surface * ret=nullptr;
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ui32 BaseOffset,
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SpriteWidth, SpriteHeight, //format of sprite
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TotalRowLength, // length of read segment
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add, FullHeight,FullWidth,
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RowAdd,
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defType2;
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int LeftMargin, RightMargin, TopMargin, BottomMargin;
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ui8 SegmentType;
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BaseOffset = SEntries[SIndex].offset;
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SSpriteDef sd = * reinterpret_cast<const SSpriteDef *>(FDef + BaseOffset);
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defType2 = read_le_u32(&sd.defType2);
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FullWidth = read_le_u32(&sd.FullWidth);
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FullHeight = read_le_u32(&sd.FullHeight);
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SpriteWidth = read_le_u32(&sd.SpriteWidth);
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SpriteHeight = read_le_u32(&sd.SpriteHeight);
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LeftMargin = read_le_u32(&sd.LeftMargin);
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TopMargin = read_le_u32(&sd.TopMargin);
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RightMargin = FullWidth - SpriteWidth - LeftMargin;
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BottomMargin = FullHeight - SpriteHeight - TopMargin;
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//if(LeftMargin + RightMargin < 0)
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// SpriteWidth += LeftMargin + RightMargin; //ugly construction... TODO: check how to do it nicer
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if(LeftMargin<0)
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SpriteWidth+=LeftMargin;
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if(RightMargin<0)
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SpriteWidth+=RightMargin;
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// Note: this looks bogus because we allocate only FullWidth, not FullWidth+add
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add = 4 - FullWidth%4;
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if (add==4)
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add=0;
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ret = SDL_CreateRGBSurface(SDL_SWSURFACE, FullWidth, FullHeight, 8, 0, 0, 0, 0);
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if(nullptr == ret)
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{
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logGlobal->errorStream() << __FUNCTION__ <<": Unable to create surface";
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logGlobal->errorStream() << FullWidth << "X" << FullHeight;
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logGlobal->errorStream() << SDL_GetError();
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throw std::runtime_error("Unable to create surface");
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}
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BaseOffset += sizeof(SSpriteDef);
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int BaseOffsetor = BaseOffset;
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SDL_Palette * p = SDL_AllocPalette(256);
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SDL_SetPaletteColors(p, palette, 0, 256);
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SDL_SetSurfacePalette(ret, p);
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SDL_FreePalette(p);
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int ftcp=0;
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// If there's a margin anywhere, just blank out the whole surface.
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if (TopMargin > 0 || BottomMargin > 0 || LeftMargin > 0 || RightMargin > 0) {
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memset( reinterpret_cast<char*>(ret->pixels), 0, FullHeight*FullWidth);
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}
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// Skip top margin
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if (TopMargin > 0)
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ftcp += TopMargin*(FullWidth+add);
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switch(defType2)
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{
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case 0:
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{
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for (ui32 i=0;i<SpriteHeight;i++)
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{
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if (LeftMargin>0)
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ftcp += LeftMargin;
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memcpy(reinterpret_cast<char*>(ret->pixels)+ftcp, &FDef[BaseOffset], SpriteWidth);
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ftcp += SpriteWidth;
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BaseOffset += SpriteWidth;
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if (RightMargin>0)
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ftcp += RightMargin;
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}
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}
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break;
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case 1:
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{
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const ui32 * RWEntriesLoc = reinterpret_cast<const ui32 *>(FDef+BaseOffset);
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BaseOffset += sizeof(int) * SpriteHeight;
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for (ui32 i=0;i<SpriteHeight;i++)
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{
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BaseOffset=BaseOffsetor + read_le_u32(RWEntriesLoc + i);
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if (LeftMargin>0)
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ftcp += LeftMargin;
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TotalRowLength=0;
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do
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{
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ui32 SegmentLength;
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SegmentType=FDef[BaseOffset++];
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SegmentLength=FDef[BaseOffset++] + 1;
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if (SegmentType==0xFF)
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{
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memcpy(reinterpret_cast<char*>(ret->pixels)+ftcp, FDef + BaseOffset, SegmentLength);
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BaseOffset+=SegmentLength;
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}
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else
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{
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memset(reinterpret_cast<char*>(ret->pixels)+ftcp, SegmentType, SegmentLength);
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}
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ftcp += SegmentLength;
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TotalRowLength += SegmentLength;
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}while(TotalRowLength<SpriteWidth);
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RowAdd=SpriteWidth-TotalRowLength;
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if (RightMargin>0)
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ftcp += RightMargin;
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if (add>0)
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ftcp += add+RowAdd;
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}
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}
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break;
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case 2:
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{
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BaseOffset = BaseOffsetor + read_le_u16(FDef + BaseOffsetor);
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for (ui32 i=0;i<SpriteHeight;i++)
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{
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//BaseOffset = BaseOffsetor+RWEntries[i];
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if (LeftMargin>0)
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ftcp += LeftMargin;
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TotalRowLength=0;
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do
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{
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SegmentType=FDef[BaseOffset++];
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ui8 code = SegmentType / 32;
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ui8 value = (SegmentType & 31) + 1;
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if(code==7)
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{
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memcpy(reinterpret_cast<char*>(ret->pixels)+ftcp, &FDef[BaseOffset], value);
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ftcp += value;
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BaseOffset += value;
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}
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else
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{
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memset(reinterpret_cast<char*>(ret->pixels)+ftcp, code, value);
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ftcp += value;
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}
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TotalRowLength+=value;
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} while(TotalRowLength<SpriteWidth);
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if (RightMargin>0)
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ftcp += RightMargin;
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RowAdd=SpriteWidth-TotalRowLength;
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if (add>0)
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ftcp += add+RowAdd;
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}
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}
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break;
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case 3:
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{
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for (ui32 i=0;i<SpriteHeight;i++)
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{
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BaseOffset = BaseOffsetor + read_le_u16(FDef + BaseOffsetor+i*2*(SpriteWidth/32));
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if (LeftMargin>0)
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ftcp += LeftMargin;
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TotalRowLength=0;
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do
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{
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SegmentType=FDef[BaseOffset++];
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ui8 code = SegmentType / 32;
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ui8 value = (SegmentType & 31) + 1;
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int len = std::min<ui32>(value, SpriteWidth - TotalRowLength) - std::max(0, -LeftMargin);
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vstd::amax(len, 0);
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if(code==7)
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{
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memcpy((ui8*)ret->pixels + ftcp, FDef + BaseOffset, len);
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ftcp += len;
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BaseOffset += len;
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}
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else
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{
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memset((ui8*)ret->pixels + ftcp, code, len);
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ftcp += len;
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}
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TotalRowLength+=( LeftMargin>=0 ? value : value+LeftMargin );
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}while(TotalRowLength<SpriteWidth);
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if (RightMargin>0)
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ftcp += RightMargin;
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RowAdd=SpriteWidth-TotalRowLength;
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if (add>0)
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ftcp += add+RowAdd;
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}
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}
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break;
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default:
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throw std::runtime_error("Unknown sprite format.");
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break;
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}
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SDL_Color ttcol = ret->format->palette->colors[0];
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Uint32 keycol = SDL_MapRGBA(ret->format, ttcol.r, ttcol.b, ttcol.g, ttcol.a);
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SDL_SetColorKey(ret, SDL_TRUE, keycol);
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return ret;
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}
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CDefEssential * CDefHandler::essentialize()
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{
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auto ret = new CDefEssential;
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ret->ourImages = ourImages;
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notFreeImgs = true;
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return ret;
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}
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CDefHandler * CDefHandler::giveDef(const std::string & defName)
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{
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ResourceID resID(std::string("SPRITES/") + defName, EResType::ANIMATION);
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auto data = CResourceHandler::get()->load(resID)->readAll().first;
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if(!data)
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throw std::runtime_error("bad def name!");
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auto nh = new CDefHandler();
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nh->openFromMemory(data.get(), defName);
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return nh;
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}
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CDefEssential * CDefHandler::giveDefEss(const std::string & defName)
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{
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CDefEssential * ret;
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CDefHandler * temp = giveDef(defName);
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ret = temp->essentialize();
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delete temp;
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return ret;
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}
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