mirror of
https://github.com/isometimes/rpi4-osdev
synced 2024-09-19 13:32:56 +00:00
89 lines
1.8 KiB
C
89 lines
1.8 KiB
C
#include "include/wgt.h"
|
|
#include "include/mem.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 wgt27()
|
|
{
|
|
block skewit; /* Pointer to our block */
|
|
color palette[256]; /* Our palette */
|
|
int i = 0; /* Loop counter */
|
|
|
|
set_clock_rate(get_max_clock());
|
|
mem_init();
|
|
vga256 ();
|
|
|
|
wreadpalette (0, 255, palette); /* Store our current palette */
|
|
|
|
wcls (vgapal[0]); /* Clear screen with black */
|
|
|
|
for (i = 100; i > 0; i--) /* Draw 100 filled circles */
|
|
{
|
|
wsetcolor (vgapal[i]);
|
|
wfill_circle (160, 100, i);
|
|
}
|
|
|
|
getch();
|
|
|
|
wsetcolor (vgapal[0]); /* Use black as active color */
|
|
wbar (0, 0, 104, 199); /* Draw two solid rectangles */
|
|
wbar (216, 0, 319, 199);
|
|
skewit=wnewblock (100, 40, 220, 160); /* Grab a block for skewing */
|
|
|
|
getch();
|
|
|
|
wcls (vgapal[0]); /* Clear screen with black */
|
|
do {
|
|
for (i = -100; i < 100; i += 2) /* Skew image 2 pixels at a time */
|
|
{
|
|
wskew (100, 40, skewit, i);
|
|
delay(2);
|
|
}
|
|
|
|
for (i = 100; i > -100; i -= 2) /* Skew image back to starting pos */
|
|
{
|
|
wskew (100, 40, skewit, i);
|
|
delay(2);
|
|
}
|
|
} while (1);
|
|
}
|
|
|
|
void main()
|
|
{
|
|
wgt27();
|
|
while (1);
|
|
}
|