mirror of
https://github.com/isometimes/rpi4-osdev
synced 2024-11-13 22:00:40 +00:00
124 lines
2.7 KiB
C
124 lines
2.7 KiB
C
#include "include/wgt.h"
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#include "include/mem.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 wgt32()
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{
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int i, t, c, b;
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color pal[256];
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block wgt1;
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short top[320];
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short bot[320];
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set_clock_rate(get_max_clock());
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mem_init();
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vga256 (); /* Initialize graphics mode */
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extern unsigned char _binary_bin_wgt1_pal_start[];
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wloadpalette (&_binary_bin_wgt1_pal_start[0], pal);
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wsetpalette (0, 255, pal);
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extern unsigned char _binary_bin_wgt1_blk_start[];
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wgt1 = wloadblock (&_binary_bin_wgt1_blk_start[0]);
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wcls (vgapal[0]); /* Clear screen with black */
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wclip (0, 0, 319, 199); /* Use full screen */
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/* Note: wsline merely stores y coordinates of line in array. You may use
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several calls with various x ranges to make curved lines */
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wsline (0, 199, 319, 0, top); /* Set array top for diagonal line */
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wsline (0, 199, 319, 199, bot); /* Array bot is horizontal line */
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wwarp (0, 319, top, bot, wgt1, 0); /* Warp image between lines */
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getch (); /* Wait for key */
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// squish it
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wcls (vgapal[0]); /* Clear screen */
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wsline (0, 100, 100, 0, top); /* Now create arrow shape */
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wsline (101, 70, 218, 70, top);
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wsline (219, 0, 319, 100, top);
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wsline (0, 100, 100, 199, bot);
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wsline (101, 130, 218, 130, bot);
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wsline (219, 199, 319, 100, bot);
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wwarp (0, 319, top, bot, wgt1, 0); /* Warp image using arrays */
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getch (); /* Wait for keypress */
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// make a double arrow
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wcls (vgapal[0]); /* Clear screen with black */
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do {
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b =rand() % 100;
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c = (rand() % 100) + 100;
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for (t = 0; t <= 319; t++)
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{
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i = rand() % 2;
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if (i == 0)
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b++;
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else b--;
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i = rand() % 2;
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if (i == 0)
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c++;
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else c--;
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if (b > 100)
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b = 100;
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if (b < 0)
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b = 0;
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if (c > 197)
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c = 197;
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if (c < 100)
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c = 100;
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top[t] = b; /* Create random wavy lines */
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bot[t] = c;
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}
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wwarp (0, 319, top, bot, wgt1, 0); /* And warp image between them */
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getch (); /* Wait for keypress */
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wcls (vgapal[0]); /* Clear screen with black */
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} while (1); /* End program if Q pressed */
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wfreeblock (wgt1); /* Free memory from image */
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}
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void main()
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{
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wgt32();
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while (1);
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}
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