mirror of
https://github.com/isometimes/rpi4-osdev
synced 2024-11-25 11:40:40 +00:00
85 lines
1.6 KiB
C
85 lines
1.6 KiB
C
#include "include/wgt.h"
|
|
#include "include/mem.h"
|
|
#include "include/mb.h"
|
|
|
|
// ######## REQUIRED FUNCTIONS ########
|
|
|
|
unsigned long state0 = 1000;
|
|
unsigned long state1 = 2000;
|
|
|
|
unsigned long rand(void)
|
|
{
|
|
unsigned long s1 = state0;
|
|
unsigned long s0 = state1;
|
|
|
|
state0 = s0;
|
|
s1 ^= s1 << 23;
|
|
s1 ^= s1 >> 17;
|
|
s1 ^= s0;
|
|
s1 ^= s0 >> 26;
|
|
state1 = s1;
|
|
|
|
return state0 + state1;
|
|
}
|
|
|
|
// ######## STUB FUNCTIONS ########
|
|
|
|
unsigned int kb = 0;
|
|
|
|
unsigned int kbhit(void) {
|
|
kb++;
|
|
return kb / 500;
|
|
}
|
|
|
|
void getch(void) {
|
|
wait_msec(0x500000);
|
|
kb = 0;
|
|
}
|
|
|
|
// ######## WGT EXAMPLES ########
|
|
|
|
void wgt09()
|
|
{
|
|
short i, x, y;
|
|
block screen1; /* a full screen */
|
|
block part1; /* part of the screen */
|
|
|
|
set_clock_rate(get_max_clock());
|
|
mem_init();
|
|
vga256 ();
|
|
|
|
for (i = 1; i < 200; i++)
|
|
{
|
|
wsetcolor (vgapal[i]);
|
|
wline (0, 0, 319, i);
|
|
wline (319, 199, 0, 199 - i);
|
|
}
|
|
|
|
getch();
|
|
|
|
screen1 = wnewblock (0, 0, 319, 199); /* capture the entire screen */
|
|
part1 = wnewblock (0, 0, 150, 150); /* get a part of the screen */
|
|
/* Note that wnewblock allocates the memory for the block */
|
|
|
|
wcls (vgapal[0]);
|
|
|
|
do {
|
|
x = rand() % 320;
|
|
y = rand() % 200;
|
|
wputblock (x, y, part1, 0); /* put the part somewhere */
|
|
} while (!kbhit ());
|
|
|
|
getch ();
|
|
|
|
wputblock (0, 0, screen1, 0); /* replace the mess with the */
|
|
/* original screen */
|
|
|
|
wfreeblock (screen1); /* *** make sure to free the memory! */
|
|
wfreeblock (part1);
|
|
}
|
|
|
|
void main()
|
|
{
|
|
wgt09();
|
|
while (1);
|
|
}
|