mirror of
https://github.com/isometimes/rpi4-osdev
synced 2024-11-12 13:20:39 +00:00
85 lines
1.6 KiB
C
85 lines
1.6 KiB
C
#include "include/wgt.h"
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#include "include/mem.h"
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#include "include/mb.h"
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// ######## REQUIRED FUNCTIONS ########
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unsigned long state0 = 1000;
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unsigned long state1 = 2000;
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unsigned long rand(void)
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{
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unsigned long s1 = state0;
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unsigned long s0 = state1;
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state0 = s0;
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s1 ^= s1 << 23;
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s1 ^= s1 >> 17;
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s1 ^= s0;
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s1 ^= s0 >> 26;
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state1 = s1;
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return state0 + state1;
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}
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// ######## STUB FUNCTIONS ########
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unsigned int kb = 0;
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unsigned int kbhit(void) {
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kb++;
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return kb / 500;
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}
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void getch(void) {
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wait_msec(0x500000);
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kb = 0;
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}
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// ######## WGT EXAMPLES ########
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void wgt09()
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{
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short i, x, y;
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block screen1; /* a full screen */
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block part1; /* part of the screen */
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set_clock_rate(get_max_clock());
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mem_init();
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vga256 ();
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for (i = 1; i < 200; i++)
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{
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wsetcolor (vgapal[i]);
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wline (0, 0, 319, i);
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wline (319, 199, 0, 199 - i);
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}
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getch();
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screen1 = wnewblock (0, 0, 319, 199); /* capture the entire screen */
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part1 = wnewblock (0, 0, 150, 150); /* get a part of the screen */
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/* Note that wnewblock allocates the memory for the block */
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wcls (vgapal[0]);
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do {
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x = rand() % 320;
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y = rand() % 200;
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wputblock (x, y, part1, 0); /* put the part somewhere */
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} while (!kbhit ());
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getch ();
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wputblock (0, 0, screen1, 0); /* replace the mess with the */
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/* original screen */
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wfreeblock (screen1); /* *** make sure to free the memory! */
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wfreeblock (part1);
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}
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void main()
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{
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wgt09();
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while (1);
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}
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