mirror of
https://github.com/isometimes/rpi4-osdev
synced 2024-09-19 21:32:58 +00:00
101 lines
2.1 KiB
C
101 lines
2.1 KiB
C
#include "wgt.h"
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#include "include/mem.h"
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#include "include/multicore.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 wgt18()
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{
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block screen1; /* one virtual screen */
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block circ[4]; /* and four circle images */
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short y;
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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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start_core2(minit); // Start the comms engine (core 2)
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while (!comms_up); // Wait for comms up
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screen1 = wnewblock (0, 0, 319, 199);
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for (y = 0; y < 4; y++)
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{
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wsetcolor (vgapal[40 + y * 5]);
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wfill_circle (30, 30, 20 + y * 4);
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/* draw a circle with a box cut out in middle */
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/* Note that the circle turns into a square when we increase the radius
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because I'm still grabbing the same area from the wnewblock... */
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wsetcolor (vgapal[0]);
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wbar (20, 20, 40, 40);
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circ[y] = wnewblock (10, 10, 50, 50); /* get the sprite */
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}
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wsetscreen (screen1);
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do {
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for (y = 0; y < 200; y++)
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{
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wsetcolor (vgapal[y]);
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wline (0, y, 319, y); /* clear the screen by drawing horz lines (fast) */
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}
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wputblock (mx, my, circ[0], 1);
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wputblock (279 - mx, my, circ[1], 1);
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wputblock (mx, 159 - my, circ[2], 1);
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wputblock (279 - mx, 159 - my, circ[3], 1);
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/* Put four blocks on the screen depending on where the mouse is. */
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/* The first one displayed is the one in the back. */
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wcopyscreen (0, 0, 319, 199, screen1, 0, 0, NULL);
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/* copy the whole screen */
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/* notice how we never use wnormscreen at all! */
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} while (1);
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mdeinit();
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wfreeblock (screen1);
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for (y = 0; y < 4; y ++)
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wfreeblock (circ[y]);
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}
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void main()
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{
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wgt18();
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while (1);
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}
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