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Implement adjustable game speed for Snake game

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Lluciocc 2026-04-17 11:10:09 +02:00 committed by GitHub
parent b54e371f3f
commit aff3e99ab2
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GPG key ID: B5690EEEBB952194
1 changed files with 24 additions and 22 deletions
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44
src/userland/games/snake.c
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@ -2,6 +2,7 @@
#include "libc/libui.h"
#include "libc/stdlib.h"
#include "libc/input.h"
#include "libc/string.h"
#include <stdbool.h>
#include <stddef.h>
@ -71,6 +72,7 @@ static int best_score = 0;
/* poor-man timer */
static uint32_t tick_counter = 0;
static int game_speed_ms = 80; // default (milliseconds per move)
static uint32_t random_seed = 0x1234ABCDu;
@ -331,8 +333,21 @@ static void handle_key(int key) {
}
int main(int argc, char **argv) {
(void)argc;
(void)argv;
int game_speed_ms = 80;
// Parse arguments
for (int i = 1; i < argc; i++) {
if (strcmp(argv[i], "-speed") == 0 && i + 1 < argc) {
int val = atoi(argv[i + 1]);
// Clamp to safe range
if (val < 20) val = 20;
if (val > 500) val = 500;
game_speed_ms = val;
i++;
}
}
ui_window_t win = ui_window_create("Snake", 220, 120, WINDOW_W, WINDOW_H);
if (!win) return 1;
@ -347,41 +362,28 @@ int main(int argc, char **argv) {
gui_event_t ev;
while (1) {
bool needs_redraw = false;
while (ui_get_event(win, &ev)) {
if (ev.type == GUI_EVENT_PAINT) {
needs_redraw = true;
snake_paint(win);
ui_mark_dirty(win, 0, 0, WINDOW_W, WINDOW_H);
} else if (ev.type == GUI_EVENT_CLICK) {
handle_click(ev.arg1, ev.arg2);
needs_redraw = true;
} else if (ev.type == GUI_EVENT_KEY) {
handle_key(ev.arg1);
needs_redraw = true;
} else if (ev.type == GUI_EVENT_CLOSE) {
sys_exit(0);
} else if (ev.type == GUI_EVENT_RESIZE) {
needs_redraw = true;
}
}
tick_counter++;
if (tick_counter >= GAME_TICK_DELAY) {
tick_counter = 0;
move_snake_step();
needs_redraw = true;
}
move_snake_step();
if (needs_redraw) {
snake_paint(win);
ui_mark_dirty(win, 0, 0, WINDOW_W, WINDOW_H);
}
snake_paint(win);
ui_mark_dirty(win, 0, 0, WINDOW_W, WINDOW_H);
sleep(10);
sleep(game_speed_ms);
}
return 0;