Lisaju

-- Sebastian Pawlak
Pobierz plik lisaju.zip
Kod źródłowy pliku "lisaju.c":
/* Sebastian Pawlak
 * Lisaju z efektem plazmy
 * kompilator: DJGPP
 */
#include <stdio.h>
#include <sys/nearptr.h>
#include <sys/movedata.h>
#include <go32.h>
#include <dos.h>
#include <math.h>

#define GRAPHICS        0x013
#define TEXT            0x03

char bufor [320*200];
char pal [256*3];

void SetRGBblock(unsigned char *pal, unsigned char od_kol, unsigned short int ilosc)
{
    int i;

    outportb (0x03c8,od_kol);
    for (i = 0; i < ilosc; i++) {
 	outportb (0x03c9, *pal++);
 	outportb (0x03c9, *pal++);
 	outportb (0x03c9, *pal++);
    }
}


void loadpalette(void)
{
    int counter;
    FILE *palfile;

    if ((palfile = fopen("palette.pal", "rb")) == NULL) {
        fprintf(stderr,"Error opening PALETTE.PAL!\n");
        exit(1);
    }

//   outportb(0x3C8,0);      /* 0x3C8 = VGA DAC, initial color index */
    for (counter = 0; counter < 768; counter++) {
        pal[counter] = fgetc(palfile);
    }

    fclose(palfile);
}


void InitGraph(int mode)
{
    union REGS regs;

    regs.x.ax = mode;
    int86(0x10, &regs, &regs);
}


int main(void)
{
    short x1 = 100, y1 = 80, x2 = 320 - 100, y2 = 120;
    float vx1 = 0, vy1 = 0, vx2 = 0,vy2 = 0;
    short i, j;
    char c;
    unsigned short offs;

    /* usuwam wszystkie zabezpieczenia pamieci */
    __djgpp_nearptr_enable();

    /* wlacza tryb graficzny 320x200 256 kolorow */
    InitGraph(GRAPHICS);

    loadpalette ();
    SetRGBblock (pal,0,256);

    while (!kbhit()) {
        x1 += (int)vx1; y1 += (int)vy1;
        x2 += (int)vx2; y2 += (int)vy2;
        vx1 += (x2 - x1) / 40.0;
        vy1 += (y2 - y1) / 10.0;
        vx2 += (x1 - x2) / 60.0;
        vy2 += (y1 - y2) / 50.0;

        offs = 0;
        for (j = 0; j < 200; j++)
            for (i = 0; i < 320; i++) {
                c = (char)
                    (sqrt(sqrt((float)
                    ((x1-i)*(x1-i)+(y1-j)*(y1-j))*
                    ((x2-i)*(x2-i)+(y2-j)*(y2-j)))));
                bufor[offs++] = c;
            }

        movedata (_my_ds(),(int)bufor,_dos_ds,(int)0xa0000,320*200);
    }

    /* wlacz tryb tekstowy */
    InitGraph(TEXT);

    /* przywraca poprzednie zabezpieczenia pamieci */
    __djgpp_nearptr_disable();

    return 0;
}
automatyka przemysłowa