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https://github.com/JannisHeydemann/BoredOS.git
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fun apps and inclusion of stb_image.h for future work
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boreddevnl
185
src/kernel/userland/sort.c
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185
src/kernel/userland/sort.c
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// Copyright (c) 2023-2026 Chris (boreddevnl)
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// This software is released under the GNU General Public License v3.0. See LICENSE file for details.
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// This header needs to maintain in any file it is present in, as per the GPL license terms.
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#include "syscall.h"
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#include "libui.h"
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#include "stdlib.h"
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#define WIN_W 400
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#define WIN_H 210
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#define NUM_ELEM (WIN_W / 2)
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#define BAR_W 2
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static uint32_t *fb = NULL;
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static int heights[NUM_ELEM];
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static int moves = 0;
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static unsigned long int next_rand = 1;
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static int my_rand(void) {
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next_rand = next_rand * 1103515245 + 12345;
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return (unsigned int)(next_rand / 65536) % 32768;
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}
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static void my_srand(unsigned int seed) {
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next_rand = seed;
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}
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static void render_state(ui_window_t win) {
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// Clear fb
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for (int i = 0; i < WIN_W * WIN_H; i++) {
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fb[i] = 0xFF1E1E1E;
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}
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// Draw bars
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for (int i = 0; i < NUM_ELEM; i++) {
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int h = heights[i];
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if (h > WIN_H - 10) h = WIN_H - 10;
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int x = i * BAR_W;
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int y = WIN_H - h;
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// draw rect
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for (int yy = y; yy < WIN_H; yy++) {
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for (int xx = x; xx < x + BAR_W; xx++) {
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if (xx >= 0 && xx < WIN_W && yy >= 0 && yy < WIN_H) {
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fb[yy * WIN_W + xx] = 0xFF4A90E2; // Blue
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}
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}
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}
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}
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// Draw Border for Box - bottom left
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int box_x = 10;
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int box_y = WIN_H - 40; // moved up by 10 pixels
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int box_w = 120;
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int box_h = 24;
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for (int yy = box_y; yy < box_y + box_h; yy++) {
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for (int xx = box_x; xx < box_x + box_w; xx++) {
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if (xx == box_x || xx == box_x + box_w - 1 || yy == box_y || yy == box_y + box_h - 1) {
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fb[yy * WIN_W + xx] = 0xFFFFFFFF;
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} else {
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fb[yy * WIN_W + xx] = 0xFF1E1E1E;
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}
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}
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}
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// Draw framebuffer to window
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ui_draw_image(win, 0, 0, WIN_W, WIN_H, fb);
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// Draw text inside the box
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char buf[32];
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strcpy(buf, "Moves: ");
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char num_buf[16];
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itoa(moves, num_buf);
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strcat(buf, num_buf);
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ui_draw_string(win, box_x + 8, box_y + 4, buf, 0xFFFFFFFF);
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ui_mark_dirty(win, 0, 0, WIN_W, WIN_H);
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}
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int main(void) {
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ui_window_t win = ui_window_create("sort", 100, 100, WIN_W, WIN_H);
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fb = (uint32_t*)malloc(WIN_W * WIN_H * sizeof(uint32_t));
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if (!fb) return 1;
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// Seed PRNG with system time (ticks)
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my_srand((unsigned int)sys_system(16, 0, 0, 0, 0));
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// Initialize perfect slope
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int max_h = WIN_H - 40; // max height
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int min_h = 10;
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for (int i = 0; i < NUM_ELEM; i++) {
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heights[i] = min_h + (max_h - min_h) * i / (NUM_ELEM - 1);
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}
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// Shuffle
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for (int i = NUM_ELEM - 1; i > 0; i--) {
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int j = my_rand() % (i + 1);
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int t = heights[i];
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heights[i] = heights[j];
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heights[j] = t;
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}
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gui_event_t ev;
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// Cocktail shaker sort variables
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bool swapped = true;
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int start = 0;
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int end = NUM_ELEM - 1;
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bool done = false;
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// We render after each swap so the steps are extremely visual
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while (1) {
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if (ui_get_event(win, &ev)) {
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if (ev.type == GUI_EVENT_CLOSE) {
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break;
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}
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}
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if (!done) {
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swapped = false;
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// Forward pass
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for (int i = start; i < end; ++i) {
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if (heights[i] > heights[i + 1]) {
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int t = heights[i];
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heights[i] = heights[i+1];
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heights[i+1] = t;
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swapped = true;
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moves++;
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render_state(win);
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// Allow UI events while sorting
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if (ui_get_event(win, &ev)) {
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if (ev.type == GUI_EVENT_CLOSE) {
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goto exit_app;
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}
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}
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// No explicit sleep, rendering takes some time and provides natural visual delay.
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// If it's too fast, we'll add sleep(1) here later.
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}
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}
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if (!swapped) {
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done = true;
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continue;
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}
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swapped = false;
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end = end - 1;
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// Backward pass
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for (int i = end - 1; i >= start; --i) {
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if (heights[i] > heights[i + 1]) {
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int t = heights[i];
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heights[i] = heights[i+1];
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heights[i+1] = t;
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swapped = true;
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moves++;
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render_state(win);
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// Allow UI events
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if (ui_get_event(win, &ev)) {
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if (ev.type == GUI_EVENT_CLOSE) {
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goto exit_app;
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}
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}
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}
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}
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start = start + 1;
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} else {
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// Sort is done, just render and idle
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render_state(win);
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sleep(50);
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}
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}
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exit_app:
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free(fb);
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exit(0);
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return 0;
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}
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