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Monorepo for Aesthetic.Computer aesthetic.computer
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11 kB · 355 lines
C
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356// BUILD_TARGET: CGB// Hybrid: Background tiles for bar shapes, sprites for color overlays#include <gb/gb.h>#include <gb/cgb.h>#include <stdint.h>
#include "aesthetic_boot.h"
// Note definitionsenum notes { C3 = 36, Cd3, D3, Dd3, E3, F3, Fd3, G3, Gd3, A3, Ad3, B3, C4, Cd4, D4, Dd4, E4, F4, Fd4, G4, Gd4, A4, Ad4, B4, C5, Cd5, D5, Dd5, E5, F5, Fd5, G5, Gd5, A5, Ad5, B5, REST};
const uint16_t frequencies[] = { 1798, 1812, 1825, 1837, 1849, 1860, 1871, 1881, 1890, 1899, 1907, 1915, 1923, 1930, 1936, 1943, 1949, 1954, 1959, 1964, 1969, 1974, 1978, 1982, 1985, 1988, 1992, 1995, 1998, 2001, 2004, 2006, 2009, 2011, 2013, 2015, 0};
// Twinkle Twinkle melodyconst uint8_t melody[] = { C4, C4, G4, G4, A4, A4, G4, REST, F4, F4, E4, E4, D4, D4, C4, REST, G4, G4, F4, F4, E4, E4, D4, REST, G4, G4, F4, F4, E4, E4, D4, REST, C4, C4, G4, G4, A4, A4, G4, REST, F4, F4, E4, E4, D4, D4, C4, REST, 0xFF};
// Tiles: 0=blank, 1=white bar, 2-8=letters C D E F G A Bconst uint8_t tiles[] = { // Tile 0: blank 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, // Tile 1: white filled square 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, // Tile 2: 'C' 0x3C, 0x3C, 0x66, 0x66, 0x60, 0x60, 0x60, 0x60, 0x60, 0x60, 0x66, 0x66, 0x3C, 0x3C, 0x00, 0x00, // Tile 3: 'D' 0x78, 0x78, 0x6C, 0x6C, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x6C, 0x6C, 0x78, 0x78, 0x00, 0x00, // Tile 4: 'E' 0x7E, 0x7E, 0x60, 0x60, 0x60, 0x60, 0x7C, 0x7C, 0x60, 0x60, 0x60, 0x60, 0x7E, 0x7E, 0x00, 0x00, // Tile 5: 'F' 0x7E, 0x7E, 0x60, 0x60, 0x60, 0x60, 0x7C, 0x7C, 0x60, 0x60, 0x60, 0x60, 0x60, 0x60, 0x00, 0x00, // Tile 6: 'G' 0x3C, 0x3C, 0x66, 0x66, 0x60, 0x60, 0x6E, 0x6E, 0x66, 0x66, 0x66, 0x66, 0x3C, 0x3C, 0x00, 0x00, // Tile 7: 'A' 0x3C, 0x3C, 0x66, 0x66, 0x66, 0x66, 0x7E, 0x7E, 0x66, 0x66, 0x66, 0x66, 0x66, 0x66, 0x00, 0x00, // Tile 8: 'B' 0x7C, 0x7C, 0x66, 0x66, 0x66, 0x66, 0x7C, 0x7C, 0x66, 0x66, 0x66, 0x66, 0x7C, 0x7C, 0x00, 0x00,};
// Background palette: white bars on blackconst uint16_t bg_palettes[] = { RGB_BLACK, RGB(31, 31, 31), RGB_WHITE, RGB_WHITE,};
// OBJ palettes (7 colors for coloring the white bars)const uint16_t obj_palettes[] = { // Palette 0: Red (C) RGB_BLACK, RGB(31, 0, 0), RGB(31, 0, 0), RGB(31, 0, 0), // Palette 1: Orange (D) RGB_BLACK, RGB(31, 15, 0), RGB(31, 15, 0), RGB(31, 15, 0), // Palette 2: Yellow (E) RGB_BLACK, RGB(31, 31, 0), RGB(31, 31, 0), RGB(31, 31, 0), // Palette 3: Green (F) RGB_BLACK, RGB(0, 31, 0), RGB(0, 31, 0), RGB(0, 31, 0), // Palette 4: Cyan (G) RGB_BLACK, RGB(0, 31, 31), RGB(0, 31, 31), RGB(0, 31, 31), // Palette 5: Blue (A) RGB_BLACK, RGB(0, 0, 31), RGB(0, 0, 31), RGB(0, 0, 31), // Palette 6: Purple (B) RGB_BLACK, RGB(31, 0, 31), RGB(31, 0, 31), RGB(31, 0, 31), // Palette 7: Gray (played notes) RGB_BLACK, RGB(10, 10, 10), RGB(10, 10, 10), RGB(10, 10, 10),};
#define SCREEN_WIDTH 160#define MAX_VISIBLE_BARS 20 // Can show about 20 bars on screen
// DIV-APU timing (512 Hz master clock for perfect audio sync)// ~15 frames = 0.25 seconds per note at 60 FPS#define FRAMES_PER_NOTE 15#define MAX_NOTES 48
uint8_t current_note_index = 0;uint8_t current_note = REST;uint16_t frame_counter = 0;uint8_t auto_play = 1;int16_t scroll_x = 0; // Horizontal scroll position
// Animation state - blocks fall when hituint8_t anim_frame = 0; // Global animation counterint16_t fall_offset[MAX_NOTES]; // How far each block has fallen (negative = falling)uint8_t hit_frame[MAX_NOTES]; // Frame when block was hit (for flash effect)
void play_note(uint8_t note) { if(note == REST || note == 0xFF) { // Silence: volume 0, envelope decrease NR12_REG = 0x00; NR14_REG = 0x80; return; } uint16_t freq = frequencies[note - C3]; // Channel 1 configuration (learned from GBDK sound.c example) NR10_REG = 0x00; // No frequency sweep NR11_REG = 0x81; // 50% duty cycle, length = 1 NR12_REG = 0xF2; // Volume 15, envelope decrease, pace 2 // This gives notes a slight fade for better articulation NR13_REG = (uint8_t)(freq & 0xFF); // Frequency low byte NR14_REG = 0x80 | (uint8_t)((freq >> 8) & 0x07); // Trigger + frequency high bits}
uint8_t get_palette_for_note(uint8_t note) { if(note == REST || note == 0xFF) return 7; uint8_t palette = ((note - C3) % 12); if(palette > 6) palette = palette - 5; return palette;}
// Map note to letter tile (C=2, D=3, E=4, F=5, G=6, A=7, B=8)uint8_t get_letter_tile(uint8_t note) { switch(note) { case C3: case C4: case C5: return 2; // 'C' case D3: case D4: case D5: return 3; // 'D' case E3: case E4: case E5: return 4; // 'E' case F3: case F4: case F5: return 5; // 'F' case G3: case G4: case G5: return 6; // 'G' case A3: case A4: case A5: return 7; // 'A' case B3: case B4: case B5: return 8; // 'B' default: return 0; }}
// Draw background (just clear - no white bars)void draw_background_bars() { // Clear screen to black for(uint8_t y = 0; y < 18; y++) { for(uint8_t x = 0; x < 20; x++) { set_bkg_tile_xy(x, y, 0); } }}
// Update sprite overlays - blocks in a row that fall when hitvoid update_sprite_overlays() { uint8_t sprite_idx = 0; // Calculate which notes are visible based on scroll int16_t first_visible = scroll_x / 8; int16_t last_visible = first_visible + 20; for(int16_t i = first_visible; i <= last_visible && i < 48 && melody[i] != 0xFF; i++) { if(i < 0) continue; uint8_t note = melody[i]; // REST notes take time but aren't drawn if(note == REST) continue; // Base position: horizontal row at y=72 (center), accounting for scroll int16_t screen_x = 8 + (i * 8) - scroll_x; int16_t screen_y = 72; // Apply fall animation if block has been hit if(i < current_note_index) { // Block falls down over time screen_y += fall_offset[i]; // Continue falling if(fall_offset[i] < 100) { fall_offset[i] += 3; // Fall speed } } // Determine palette and scale effect uint8_t palette; if(i == current_note_index) { // Current note: colored and flashing palette = get_palette_for_note(note); // Flash effect on hit (first few frames) uint8_t frames_since_hit = anim_frame - hit_frame[i]; if(frames_since_hit < 15) { // Match FRAMES_PER_NOTE // Bounce up and down over 15 frames int8_t bounce_curve[] = {0, -1, -2, -3, -4, -4, -5, -5, -5, -4, -4, -3, -2, -1, 0}; screen_y += bounce_curve[frames_since_hit]; } } else if(i < current_note_index) { // Already played: gray and falling palette = 7; } else { // Future notes: colored, waiting palette = get_palette_for_note(note); } // Don't draw if fallen off screen if(screen_y > 160) continue; // Draw color sprite set_sprite_tile(sprite_idx, 1); set_sprite_prop(sprite_idx, palette); move_sprite(sprite_idx, screen_x, screen_y); sprite_idx++; // Draw letter sprite above uint8_t letter_tile = get_letter_tile(note); if(letter_tile > 0) { set_sprite_tile(sprite_idx, letter_tile); set_sprite_prop(sprite_idx, palette); move_sprite(sprite_idx, screen_x, screen_y - 8); sprite_idx++; } } // Hide unused sprites for(uint8_t i = sprite_idx; i < 40; i++) { move_sprite(i, 0, 0); }}
void init_graphics() { DISPLAY_OFF; // Load tiles (0=blank, 1=white bar, 2-8=letters) set_bkg_data(0, 9, tiles); set_sprite_data(0, 9, tiles); // Set palettes set_bkg_palette(0, 1, bg_palettes); set_sprite_palette(0, 8, obj_palettes); // Draw background bars draw_background_bars(); SHOW_BKG; SHOW_SPRITES; DISPLAY_ON;}
void main() { // Skip boot screen to avoid timing issues // show_aesthetic_boot(0); // Sound setup (following GBDK sound.c best practices) // Must turn on sound before modifying any sound registers! NR52_REG = 0x80; // Sound on NR51_REG = 0x11; // CH1 to both left and right speakers NR50_REG = 0x77; // Max volume on both channels init_graphics(); // Initialize fall offsets to 0 (no falling yet) for(uint8_t i = 0; i < MAX_NOTES; i++) { fall_offset[i] = 0; hit_frame[i] = 0; } // Initialize to first note and play it immediately current_note = melody[0]; play_note(current_note); hit_frame[0] = 0; while(1) { vsync(); anim_frame++; frame_counter++; // Update sprite animations every frame for smooth motion update_sprite_overlays(); uint8_t joy = joypad(); // Manual control if(joy & J_RIGHT) { if(melody[current_note_index + 1] != 0xFF) { current_note_index++; current_note = melody[current_note_index]; play_note(current_note); hit_frame[current_note_index] = anim_frame; // Record when hit // Scroll to keep current note centered scroll_x = (current_note_index * 8) - 72; if(scroll_x < 0) scroll_x = 0; SCX_REG = scroll_x; frame_counter = 0; } auto_play = 0; } if(joy & J_LEFT) { if(current_note_index > 0) { current_note_index--; current_note = melody[current_note_index]; play_note(current_note); hit_frame[current_note_index] = anim_frame; // Record when hit // Scroll to keep current note centered scroll_x = (current_note_index * 8) - 72; if(scroll_x < 0) scroll_x = 0; SCX_REG = scroll_x; frame_counter = 0; } auto_play = 0; } if(joy & J_A) { auto_play = 1; frame_counter = 0; } // Auto-play using frame counter (60 FPS timing) if(auto_play && frame_counter >= FRAMES_PER_NOTE) { if(melody[current_note_index + 1] != 0xFF) { current_note_index++; } else { // Loop: reset everything current_note_index = 0; scroll_x = 0; for(uint8_t i = 0; i < MAX_NOTES; i++) { fall_offset[i] = 0; hit_frame[i] = 0; } } current_note = melody[current_note_index]; play_note(current_note); hit_frame[current_note_index] = anim_frame; // Record when hit // Scroll to keep current note centered scroll_x = (current_note_index * 8) - 72; if(scroll_x < 0) scroll_x = 0; SCX_REG = scroll_x; frame_counter = 0; } }}