From eda1d8c0bf70fc582a02b32df82d600b8b1cbe25 Mon Sep 17 00:00:00 2001 From: Mitya Selivanov Date: Fri, 22 Nov 2024 06:22:29 +0100 Subject: Update Sine Wave example --- examples/sinewave.c | 49 ++++++++++++++++++++++++++++++++++++++++++------- 1 file changed, 42 insertions(+), 7 deletions(-) diff --git a/examples/sinewave.c b/examples/sinewave.c index 6beed29..59d1161 100755 --- a/examples/sinewave.c +++ b/examples/sinewave.c @@ -25,21 +25,56 @@ gcc \ exit $? # */ #endif -#include "../reduced_system_layer.c" +#include "../graphics.c" + +i64 time_0 = 0; +i64 audio_samples = 0; + +f32 frames[AUDIO_SAMPLE_RATE * AUDIO_NUM_CHANNELS] = {0}; + +b8 ui_button(f64 x, f64 y, f64 width, f64 height) { + b8 has_cursor = platform.cursor_x >= x && platform.cursor_x < x + width && + platform.cursor_y >= y && platform.cursor_y < y + height; + + b8 is_pressed = has_cursor && platform.key_down[BUTTON_LEFT]; + + if (is_pressed) + fill_rectangle(OP_SET, 0xffffff, x, y, width, height); + else if (has_cursor) + fill_rectangle(OP_SET, 0xa0a000, x, y, width, height); + else + fill_rectangle(OP_SET, 0x808030, x, y, width, height); + + return has_cursor && platform.key_pressed[BUTTON_LEFT]; +} void update_and_render_frame(void) { - // Nothing + p_handle_events(); + + fill_rectangle(OP_SET, 0x202020, 0, 0, platform.frame_width, platform.frame_height); + + if (ui_button(100, 100, 200, 200)) + p_queue_sound(0, AUDIO_SAMPLE_RATE, frames); + + i64 samples_elapsed = ((p_time() - time_0) * AUDIO_SAMPLE_RATE) / 1000 - audio_samples; + audio_samples += samples_elapsed; + + p_handle_audio(samples_elapsed); + p_render_frame(); + p_sleep_for(0); } i32 main(i32 argc, c8 **argv) { (void) argc; (void) argv; - platform.graceful_exit = 1; + platform = (Platform) { + .title = "Sine Wave", + .graceful_exit = 1, + }; f64 frequency = 440. * 4; - f32 frames[AUDIO_SAMPLE_RATE * AUDIO_NUM_CHANNELS]; for (i64 i = 0; i < AUDIO_SAMPLE_RATE; ++i) { f64 t = ((f64) i) / AUDIO_SAMPLE_RATE; f64 x = sin(t * frequency); @@ -51,8 +86,8 @@ i32 main(i32 argc, c8 **argv) { frames[i * 2 + 1] = (f32) x * .5; } - p_queue_sound(0, AUDIO_SAMPLE_RATE, frames); - p_handle_audio(AUDIO_SAMPLE_RATE); - p_cleanup(); + time_0 = p_time(); + + p_event_loop(); return 0; } -- cgit v1.2.3