home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Power Programmierung
/
Power-Programmierung (Tewi)(1994).iso
/
magazine
/
pctchnqs
/
1992
/
number2
/
l2.cpp
< prev
next >
Wrap
Text File
|
1992-03-21
|
1KB
|
57 lines
/* VGA mode 13h functions for Game of Life.
Tested with Borland C++ 3.0. */
#include <stdio.h>
#include <conio.h>
#include <dos.h>
#define TEXT_X_OFFSET 27
#define SCREEN_WIDTH_IN_BYTES 320
/* Width & height in pixels of each cell. */
extern unsigned int magnifier;
/* Mode 13h draw pixel function. Pixels are of width & height
specified by magnifier. */
void draw_pixel(unsigned int x, unsigned int y, unsigned int color)
{
#define SCREEN_SEGMENT 0xA000
unsigned char far *screen_ptr;
int i, j;
FP_SEG(screen_ptr) = SCREEN_SEGMENT;
FP_OFF(screen_ptr) =
y * magnifier * SCREEN_WIDTH_IN_BYTES + x * magnifier;
for (i=0; i<magnifier; i++) {
for (j=0; j<magnifier; j++) {
*(screen_ptr+j) = color;
}
screen_ptr += SCREEN_WIDTH_IN_BYTES;
}
}
/* Mode 13h mode-set function. */
void enter_display_mode()
{
union REGS regset;
regset.x.ax = 0x0013;
int86(0x10, ®set, ®set);
}
/* Text mode mode-set function. */
void exit_display_mode()
{
union REGS regset;
regset.x.ax = 0x0003;
int86(0x10, ®set, ®set);
}
/* Text display function. Offsets text to non-graphics area of
screen. */
void show_text(int x, int y, char *text)
{
gotoxy(TEXT_X_OFFSET + x, y);
puts(text);
}