From 15933b3c7ae35dc4cdcb9d9265fe3d2823c5c3e6 Mon Sep 17 00:00:00 2001 From: sbosse Date: Mon, 14 Oct 2024 23:10:08 +0200 Subject: [PATCH] Mon 14 Oct 23:09:15 CEST 2024 --- user/ball.c | 79 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 79 insertions(+) create mode 100644 user/ball.c diff --git a/user/ball.c b/user/ball.c new file mode 100644 index 0000000..fc7cd39 --- /dev/null +++ b/user/ball.c @@ -0,0 +1,79 @@ +/* +Copyright (C) 2016-2019 The University of Notre Dame +This software is distributed under the GNU General Public License. +See the file LICENSE for details. +*/ + +/* +A fun graphics demo that features text bouncing around the screen. +*/ + +#include "library/syscalls.h" +#include "library/stdio.h" +#include "library/string.h" + +#include "library/nwindow.h" + +typedef unsigned int uint32_t; + +uint32_t randint(uint32_t min, uint32_t max); +void move(int *x, int *d, int min, int max); + +int main(int argc, char *argv[]) +{ + int r = 255; + int g = 0; + int b = 0; + int x1 = 12; + int y1 = 12; + int dx1 = 4; + int dy1 = 1; + int dr = -1; + int dg = 2; + int db = 3; + + struct nwindow *nw = nw_create_default(); + + int width = nw_width(nw); + int height = nw_height(nw); + + nw_clear(nw,0, 0, width, height); + nw_flush(nw); + + while(nw_getchar(nw,0)!='q') { + move(&x1, &dx1, 0, width - 80); + move(&y1, &dy1, 0, height - 1); + move(&r, &dr, 0, 255); + move(&g, &dg, 0, 255); + move(&b, &db, 0, 255); + nw_fgcolor(nw,r, g, b); + nw_string(nw,x1, y1, "basekernel"); + nw_flush(nw); + + syscall_process_sleep(75); + } + nw_clear(nw,0, 0, width, height); + nw_fgcolor(nw,255, 255, 255); + nw_flush(nw); + return 0; +} + +uint32_t randint(uint32_t min, uint32_t max) +{ + static uint32_t state = 0xF3DC1A24; + state = (state * 1299721) + 29443; + return min + ((state >> 16) % (max - min + 1)); +} + +void move(int *x, int *d, int min, int max) +{ + *x += *d; + if(*x < min) { + *x = min; + *d = randint(1, 10); + } + if(*x > max) { + *x = max; + *d = -randint(1, 10); + } +}