rpi4-osdev/part12-wgt/samples/wgt18.c
2021-03-25 09:20:48 +00:00

101 lines
2.2 KiB
C

#include "include/wgt.h"
#include "include/mem.h"
#include "include/multicore.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 wgt18()
{
block screen1; /* one virtual screen */
block circ[4]; /* and four circle images */
short y;
set_clock_rate(get_max_clock());
mem_init();
vga256 ();
start_core2(minit); // Start the comms engine (core 2)
while (!comms_up); // Wait for comms up
screen1 = wnewblock (0, 0, 319, 199);
for (y = 0; y < 4; y++)
{
wsetcolor (vgapal[40 + y * 5]);
wfill_circle (30, 30, 20 + y * 4);
/* draw a circle with a box cut out in middle */
/* Note that the circle turns into a square when we increase the radius
because I'm still grabbing the same area from the wnewblock... */
wsetcolor (vgapal[0]);
wbar (20, 20, 40, 40);
circ[y] = wnewblock (10, 10, 50, 50); /* get the sprite */
}
wsetscreen (screen1);
do {
for (y = 0; y < 200; y++)
{
wsetcolor (vgapal[y]);
wline (0, y, 319, y); /* clear the screen by drawing horz lines (fast) */
}
wputblock (mx, my, circ[0], 1);
wputblock (279 - mx, my, circ[1], 1);
wputblock (mx, 159 - my, circ[2], 1);
wputblock (279 - mx, 159 - my, circ[3], 1);
/* Put four blocks on the screen depending on where the mouse is. */
/* The first one displayed is the one in the back. */
wcopyscreen (0, 0, 319, 199, screen1, 0, 0, NULL);
/* copy the whole screen */
/* notice how we never use wnormscreen at all! */
} while (but == 0);
mdeinit();
wfreeblock (screen1);
for (y = 0; y < 4; y ++)
wfreeblock (circ[y]);
}
void main()
{
wgt18();
while (1);
}