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Monorepo for Aesthetic.Computer aesthetic.computer
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869#include <gb/gb.h>#include <stdio.h>#include <gbdk/console.h>
// Sine table: 256 entries, values from -64 to +64const int8_t sine_table[256] = { 0, 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, 33, 36, 39, 42, 45, 48, 51, 54, 57, 59, 62, 65, 67, 70, 73, 75, 78, 80, 82, 85, 87, 89, 91, 94, 96, 98, 100, 102, 103, 105, 107, 108, 110, 112, 113, 114, 116, 117, 118, 119, 120, 121, 122, 123, 124, 124, 125, 126, 126, 127, 127, 127, 127, 127, 127, 127, 127, 127, 126, 126, 125, 124, 124, 123, 122, 121, 120, 119, 118, 117, 116, 114, 113, 112, 110, 108, 107, 105, 103, 102, 100, 98, 96, 94, 91, 89, 87, 85, 82, 80, 78, 75, 73, 70, 67, 65, 62, 59, 57, 54, 51, 48, 45, 42, 39, 36, 33, 30, 27, 24, 21, 18, 15, 12, 9, 6, 3, 0, -3, -6, -9, -12, -15, -18, -21, -24, -27, -30, -33, -36, -39, -42, -45, -48, -51, -54, -57, -59, -62, -65, -67, -70, -73, -75, -78, -80, -82, -85, -87, -89, -91, -94, -96, -98, -100, -102, -103, -105, -107, -108, -110, -112, -113, -114, -116, -117, -118, -119, -120, -121, -122, -123, -124, -124, -125, -126, -126, -127, -127, -127, -127, -127, -127, -127, -127, -127, -126, -126, -125, -124, -124, -123, -122, -121, -120, -119, -118, -117, -116, -114, -113, -112, -110, -108, -107, -105, -103, -102, -100, -98, -96, -94, -91, -89, -87, -85, -82, -80, -78, -75, -73, -70, -67, -65, -62, -59, -57, -54, -51, -48, -45, -42, -39, -36, -33, -30, -27, -24, -21, -18, -15, -12, -9, -6, -3};
int8_t sin_lookup(uint8_t angle) { return sine_table[angle];}
int8_t cos_lookup(uint8_t angle) { return sine_table[(angle + 64) & 0xFF];}
void main(void) { uint16_t angle = 64 << 8; // 90 degrees in 8.8 fixed point uint8_t step; uint8_t angle_byte; int8_t s, c; DISPLAY_ON; printf("ANGLE TEST\n"); printf("Start: %d\n", (uint8_t)(angle >> 8)); // Test key angles for(step = 0; step < 16; step++) { angle_byte = (uint8_t)(angle >> 8); s = sin_lookup(angle_byte); c = cos_lookup(angle_byte); gotoxy(0, 3 + step); printf("%d:A%d S%d C%d", step * 90, angle_byte, s, c); angle += 182 * 90; // Jump by 90 steps worth } // Show what happens at each step angle = 64 << 8; printf("\n\nPER-STEP:\n"); for(step = 0; step < 8; step++) { angle_byte = (uint8_t)(angle >> 8); printf("S%d:A%d\n", step, angle_byte); angle += 182; } while(1) { wait_vbl_done(); }}