D:/WorkAround/prequengine/trunk/src/images.c

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#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "images.h"
#include "resources.h"
#include "main.h"
#include "sdlengine.h"
#include "music.h"
#include "hqrdepack.h"


void adeline_logo()
{
        play_midi_music(31,0);
        hqr_get_entry(workVideoBuffer,HQR_RESS_FILE,RESSHQR_ADELINEIMG);
        copy_screen(workVideoBuffer, frontVideoBuffer);
        hqr_get_entry(palette,HQR_RESS_FILE,RESSHQR_ADELINEPAL);
        convert_pal_2_RGBA(palette, paletteRGBA);
        fade_in(paletteRGBA);
        delay(7000); //TODO: adjust frames per second using cfgfile.Fps value
        fade_out(paletteRGBA);
}

void load_menu_image()
{
        hqr_get_entry(workVideoBuffer, HQR_RESS_FILE, RESSHQR_MENUIMG);
        copy_screen(workVideoBuffer, frontVideoBuffer);
        hqr_get_entry(palette, HQR_RESS_FILE, RESSHQR_MAINPAL);
        convert_pal_2_RGBA(palette, paletteRGBA);
        fade_in(paletteRGBA);
        set_palette(paletteRGBA);
}

void load_image(int index)
{
        hqr_get_entry(workVideoBuffer, HQR_RESS_FILE, index);
        copy_screen(workVideoBuffer, frontVideoBuffer);
        hqr_get_entry(palette, HQR_RESS_FILE, index+1);
        convert_pal_2_RGBA(palette, paletteRGBA);
        fade_in(paletteRGBA);
        set_palette(paletteRGBA);
}

void load_image_delay(int index, int time)
{
        hqr_get_entry(workVideoBuffer, HQR_RESS_FILE, index);
        copy_screen(workVideoBuffer, frontVideoBuffer);
        hqr_get_entry(palette, HQR_RESS_FILE, index+1);
        convert_pal_2_RGBA(palette, paletteRGBA);
        fade_in(paletteRGBA);
        delay(1000*time);
        fade_out(paletteRGBA);
}

void convert_pal_2_RGBA(unsigned char * palSource, unsigned char * palDest)
{
  int i;

  for (i = 0; i < NUMOFCOLORS; i++)
  {
    palDest[0] = palSource[0];
    palDest[1] = palSource[1];
    palDest[2] = palSource[2];
    palDest+=4;
    palSource+=3;
  }
}

void fade_in(unsigned char * palette)
{
        if(cfgfile.CrossFade)
                cross_fade(frontVideoBuffer, palette);
        else
                fade_2_pal(palette);
}

void fade_out(unsigned char * palette)
{
        /*if(cfgfile.CrossFade)
                cross_fade(frontVideoBuffer, palette);
        else
                fade_2_black(palette);*/
        if(!cfgfile.CrossFade)
                fade_2_black(palette);
}

int cross_dot(int modifier, int color, int param, int intensity)
{
        if (!param)
                return (color);
        return (((color - modifier) * intensity) / param) + modifier;
}

void adjust_palette(unsigned char R, unsigned char G, unsigned char B, unsigned char * palette, int intensity)
{
        unsigned char localPalette[NUMOFCOLORS*4];
        unsigned char *newR;
        unsigned char *newG;
        unsigned char *newB;
        unsigned char *newA;

        int local;
        int counter = 0;
        int i;

        local = intensity;

        newR = &localPalette[0];
        newG = &localPalette[1];
        newB = &localPalette[2];
        newA = &localPalette[3];

        for (i = 0; i < NUMOFCOLORS; i++)
        {
                *newR = cross_dot(R, palette[counter], 100, local);
                *newG = cross_dot(G, palette[counter + 1], 100, local);
                *newB = cross_dot(B, palette[counter + 2], 100, local);
                *newA = 0;

                newR += 4;
                newG += 4;
                newB += 4;
                newA += 4;

                counter += 4;
        }

        set_palette(localPalette);
}

void fade_2_black(unsigned char *palette)
{
        int i = 0;

        if (palReseted == 0)
        {
                for (i = 100; i >= 0; i -= 3)
                {
                        adjust_palette(0, 0, 0, (unsigned char *) palette, i);
                        fps_cycles(50); //TODO: adjust frames per second using cfgfile.Fps value
                }
        }

        palReseted = 1;
}

void fade_2_pal(unsigned char *palette)
{
        int i = 100;

        for (i = 0; i <= 100; i += 3)
        {
                adjust_palette(0, 0, 0, (unsigned char *) palette, i);
                fps_cycles(50); //TODO: adjust frames per second using cfgfile.Fps value
        }

        set_palette( (unsigned char*)palette );

        palReseted = 0;

}

void black_2_white()
{
        unsigned char palette[NUMOFCOLORS*4];
        int i;

        i = 256;
        for (i = 0; i < NUMOFCOLORS; i += 3)
        {
                memset(palette, i, 1024);

                set_palette(palette);
        }
}

void set_back_pal()
{
        memset(palette, 0, NUMOFCOLORS*3);
        memset(paletteRGBA, 0, NUMOFCOLORS*4);

        set_palette(paletteRGBA);

        palReseted = 1;
}

void copy_screen(unsigned char * source, unsigned char * destination)
{
        int w,h;
        if(SCALE==1)
                memcpy(destination, source, SCREEN_WIDTH*SCREEN_HEIGHT);
        else if (SCALE==2)
                for(h=0; h<SCREEN_HEIGHT/SCALE; h++)
                {
                        for(w=0; w<SCREEN_WIDTH/SCALE; w++)
                        {
                                *destination++ = *source;
                                *destination++ = *source++;
                        }
                        memcpy(destination,destination-SCREEN_WIDTH,SCREEN_WIDTH);
                        destination+=SCREEN_WIDTH;
                }
        
}

void clear_screen()
{
        memset(frontVideoBuffer, 0, SCREEN_WIDTH*SCREEN_HEIGHT);
}

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