01c6db1b9b
git-svn-id: https://clonekeenplus.svn.sourceforge.net/svnroot/clonekeenplus/cgenius/trunk@157 4df4b0f3-56ce-47cb-b001-ed939b7d65a6
99 lines
2.3 KiB
C++
99 lines
2.3 KiB
C++
/*
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* CHQBitmap.cpp
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*
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* Created on: 18.04.2009
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* Author: gerstrong
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*/
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#include "CHQBitmap.h"
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#include "../CLogFile.h"
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#include "../FindFile.h"
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#include <cstdlib>
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CHQBitmap::CHQBitmap(SDL_Rect screenrect) {
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m_scrimg = NULL;
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m_blackscreen = NULL;
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m_active = false;
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m_alpha = 0;
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memcpy(&m_screenrect,&screenrect,sizeof(SDL_Rect));
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}
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CHQBitmap::~CHQBitmap() {
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if(m_scrimg){ SDL_FreeSurface(m_scrimg); m_scrimg = NULL;}
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if(m_blackscreen){ SDL_FreeSurface(m_blackscreen); m_blackscreen = NULL;}
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}
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bool CHQBitmap::loadImage(const std::string& pFilename, int wsize, int hsize)
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{
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m_active = false;
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std::string fullfname = GetFullFileName(pFilename);
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if(fullfname.size() == 0)
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return false;
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SDL_Surface *BitmapSurface = SDL_LoadBMP(Utf8ToSystemNative(fullfname).c_str());
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if(BitmapSurface)
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{
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if((m_scrimg = SDL_DisplayFormat(BitmapSurface)))
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{
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SDL_FreeSurface(BitmapSurface);
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if( ((m_scrimg->h>>4) > hsize) || ((m_scrimg->w>>4) > wsize) )
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{
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g_pLogFile->textOut(PURPLE,"HQBitmapLoader : The dimensions of the bitmap don't match to the dimensions of the level.<br>");
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g_pLogFile->ftextOut("Please use a proper bitmap with %dx%d dimensions.<br>", m_scrimg->w, m_scrimg->h);
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g_pLogFile->ftextOut("Your bitmap is of %dx%d.<br>", wsize, hsize);
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g_pLogFile->textOut(BLUE,"HQBitmapLoader : Loading the level without HQBitmap.<br>");
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}
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else
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{
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m_active = true;
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// Create a empty black surface for alpha blending with black
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SDL_Surface *BlackScreenCreation = SDL_CreateRGBSurface(0, 320,240,32,0,0,0,0);
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m_blackscreen = SDL_DisplayFormat(BlackScreenCreation);
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SDL_FreeSurface(BlackScreenCreation);
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}
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}
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else
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{
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g_pLogFile->textOut(PURPLE,"Error: The HQBitmap could not be loaded to the memory!");
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return m_active;
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}
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}
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else
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{
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SDL_GetError();
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}
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return m_active;
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}
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void CHQBitmap::updateHQBitmap(SDL_Surface *m_surface, SDL_Rect *p_srcrect, SDL_Rect *p_dstrect)
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{
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SDL_BlitSurface(m_scrimg, p_srcrect, m_surface, p_dstrect);
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if(m_alpha == 255)
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return;
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SDL_BlitSurface(m_blackscreen, NULL, m_surface, NULL);
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}
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void CHQBitmap::setAlphaBlend(Uint8 alpha)
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{
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if(alpha == 20)
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{
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m_alpha = 255;
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return;
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}
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m_alpha = alpha*10;
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SDL_SetAlpha(m_blackscreen, SDL_SRCALPHA, 255-m_alpha);
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}
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void CHQBitmap::offsetAlphaBlend(Uint8 alpha)
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{
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m_alpha += alpha;
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SDL_SetAlpha(m_blackscreen, SDL_SRCALPHA, alpha);
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}
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