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https://github.com/cc65/cc65.git
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198 lines
5.1 KiB
C
198 lines
5.1 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <conio.h>
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#include <modload.h>
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#include <tgi.h>
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/*****************************************************************************/
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/* Data */
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/*****************************************************************************/
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static const unsigned char SinusTable[] = {
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0x64,0x63,0x61,0x5F,0x5D,0x5B,0x59,0x57,0x55,0x54,
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0x52,0x50,0x4E,0x4C,0x4A,0x49,0x47,0x45,0x43,0x42,
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0x40,0x3E,0x3C,0x3B,0x39,0x38,0x36,0x34,0x33,0x31,
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0x30,0x2E,0x2D,0x2B,0x2A,0x28,0x27,0x26,0x24,0x23,
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0x22,0x20,0x1F,0x1E,0x1D,0x1C,0x1B,0x1A,0x19,0x18,
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0x17,0x16,0x15,0x14,0x13,0x12,0x12,0x11,0x10,0x10,
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0x0F,0x0E,0x0E,0x0D,0x0D,0x0C,0x0C,0x0C,0x0B,0x0B,
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0x0B,0x0B,0x0B,0x0B,0x0B,0x0A,0x0B,0x0B,0x0B,0x0B,
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0x0B,0x0B,0x0B,0x0C,0x0C,0x0C,0x0D,0x0D,0x0E,0x0E,
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0x0F,0x10,0x10,0x11,0x12,0x12,0x13,0x14,0x15,0x16,
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0x17,0x18,0x19,0x1A,0x1B,0x1C,0x1D,0x1E,0x1F,0x20,
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0x22,0x23,0x24,0x26,0x27,0x28,0x2A,0x2B,0x2D,0x2E,
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0x30,0x31,0x33,0x34,0x36,0x38,0x39,0x3B,0x3C,0x3E,
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0x40,0x42,0x43,0x45,0x47,0x49,0x4A,0x4C,0x4E,0x50,
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0x52,0x54,0x55,0x57,0x59,0x5B,0x5D,0x5F,0x61,0x63,
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0x64,0x65,0x67,0x69,0x6B,0x6D,0x6F,0x71,0x73,0x74,
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0x76,0x78,0x7A,0x7C,0x7E,0x7F,0x81,0x83,0x85,0x86,
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0x88,0x8A,0x8C,0x8D,0x8F,0x91,0x92,0x94,0x95,0x97,
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0x98,0x9A,0x9B,0x9D,0x9E,0xA0,0xA1,0xA2,0xA4,0xA5,
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0xA6,0xA8,0xA9,0xAA,0xAB,0xAC,0xAD,0xAE,0xAF,0xB0,
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0xB1,0xB2,0xB3,0xB4,0xB5,0xB6,0xB6,0xB7,0xB8,0xB8,
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0xB9,0xBA,0xBA,0xBB,0xBB,0xBC,0xBC,0xBC,0xBD,0xBD,
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0xBD,0xBD,0xBD,0xBD,0xBD,0xBE,0xBD,0xBD,0xBD,0xBD,
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0xBD,0xBD,0xBD,0xBC,0xBC,0xBC,0xBB,0xBB,0xBA,0xBA,
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0xB9,0xB8,0xB8,0xB7,0xB6,0xB6,0xB5,0xB4,0xB3,0xB2,
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0xB1,0xB0,0xAF,0xAE,0xAD,0xAC,0xAB,0xAA,0xA9,0xA8,
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0xA6,0xA5,0xA4,0xA2,0xA1,0xA0,0x9E,0x9D,0x9B,0x9A,
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0x98,0x97,0x95,0x94,0x92,0x91,0x8F,0x8D,0x8C,0x8A,
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0x88,0x86,0x85,0x83,0x81,0x7F,0x7E,0x7C,0x7A,0x78,
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0x76,0x74,0x73,0x71,0x6F,0x6D,0x6B,0x69,0x67,0x65
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};
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/* Driver stuff */
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static unsigned XRes;
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static unsigned YRes;
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/*****************************************************************************/
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/* Code */
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/*****************************************************************************/
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static void CheckError (const char* S)
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{
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unsigned char Error = tgi_geterror ();
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if (Error != TGI_ERR_OK) {
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printf ("%s: %d\n", S, Error);
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exit (EXIT_FAILURE);
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}
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}
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void DoWarning (void)
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/* Warn the user that the TGI driver is needed for this program */
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{
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printf ("Warning: This program needs the TGI\n"
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"driver on disk! Press 'y' if you have\n"
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"it - any other key exits.\n");
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if (cgetc () != 'y') {
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exit (EXIT_SUCCESS);
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}
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printf ("Ok. Please wait patiently...\n");
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}
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static void DoCircles (void)
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{
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static const unsigned char Palette[2] = { COLOR_WHITE, COLOR_LIGHTRED };
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unsigned char I;
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unsigned char Color = 1;
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tgi_setpalette (Palette);
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while (!kbhit ()) {
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tgi_setcolor (1);
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tgi_line (0, 0, 319, 199);
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tgi_line (0, 199, 319, 0);
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tgi_setcolor (Color);
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for (I = 10; I < 240; I += 10) {
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tgi_circle (160, 100, I);
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}
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Color ^= 0x01;
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}
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cgetc ();
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tgi_clear ();
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}
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static void DoCheckerboard (void)
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{
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static const unsigned char Palette[2] = { COLOR_WHITE, COLOR_BLACK };
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unsigned X, Y;
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unsigned char Color;
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tgi_setpalette (Palette);
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Color = 0;
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while (1) {
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for (Y = 0; Y < YRes; Y += 10) {
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for (X = 0; X < XRes; X += 10) {
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tgi_setcolor (Color);
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tgi_bar (X, Y, X+9, Y+9);
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Color ^= 0x01;
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if (kbhit ()) {
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cgetc ();
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tgi_clear ();
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return;
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}
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}
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Color ^= 0x01;
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}
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Color ^= 0x01;
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}
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}
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static void DoDiagram (void)
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{
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static const unsigned char Palette[2] = { COLOR_WHITE, COLOR_BLACK };
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unsigned X;
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tgi_setpalette (Palette);
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tgi_setcolor (1);
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tgi_line (10, 10, 10, 190);
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tgi_lineto (310, 190);
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tgi_line (8, 12, 10, 10);
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tgi_lineto (12, 12);
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tgi_line (308, 188, 310, 190);
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tgi_lineto (308, 192);
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for (X = 0; X < sizeof (SinusTable); ++X) {
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tgi_setpixel (X+10, SinusTable[X]);
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}
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cgetc ();
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tgi_clear ();
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}
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int main (void)
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{
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unsigned char Border;
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/* Warn the user that the tgi driver is needed */
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DoWarning ();
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/* Load and initialize the driver */
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tgi_load (TGI_MODE_320_200_2);
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CheckError ("tgi_load");
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tgi_init (TGI_MODE_320_200_2);
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CheckError ("tgi_init");
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/* Get stuff from the driver */
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XRes = tgi_getxres ();
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YRes = tgi_getyres ();
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/* Set the palette, set the border color */
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Border = bordercolor (COLOR_BLACK);
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/* Do graphics stuff */
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DoCircles ();
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DoCheckerboard ();
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DoDiagram ();
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/* Unload the driver */
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tgi_unload ();
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/* Reset the border */
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bordercolor (Border);
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/* Done */
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printf ("Done\n");
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return EXIT_SUCCESS;
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}
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