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Added -C to make the metaballs bounce right off the ede of the terminal

This commit is contained in:
AngelJumbo 2022-10-20 16:29:27 -05:00
parent df02cad6cc
commit a69ce502d7
1 changed files with 46 additions and 29 deletions
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75
lavat.c
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@ -6,18 +6,22 @@
#include <string.h> #include <string.h>
#include <time.h> #include <time.h>
#include <unistd.h> #include <unistd.h>
typedef struct { typedef struct {
int x; int x;
int y; int y;
int dx; int dx;
int dy; int dy;
} Ball; } Ball;
static char *custom = NULL; static char *custom = NULL;
static short color = TB_DEFAULT; static short color = TB_DEFAULT;
static int nballs = 10; static int nballs = 10;
static short speedMult = 1; static short speedMult = 1;
static short rim = 0; static short rim = 0;
static short contained = 0;
static float radius = 100; static float radius = 100;
int parse_options(int argc, char *argv[]); int parse_options(int argc, char *argv[]);
void print_help(); void print_help();
@ -43,9 +47,12 @@ int main(int argc, char *argv[]) {
int maxX = tb_width(); int maxX = tb_width();
int maxY = tb_height() * 2; int maxY = tb_height() * 2;
int speed = (((1 / (float)(maxX + maxY)) * 5000000) + 50000) / speedMult; int speed = (((1 / (float)(maxX + maxY)) * 5000000) + 50000) / speedMult;
radius = radius / (float)(maxX * maxY); //(float)(maxX > maxY ? maxX : maxY); radius = (radius * radius + (float)(maxX * maxY)) / 15000;
float innerRadius = radius * (1 + (float)(0.25 * rim)); int margin = contained ? radius * 6 : 0;
float sumConst = 0.0225;
float sumConst2 = sumConst * (1 + (float)(0.25 * rim));
char *custom2 = custom; char *custom2 = custom;
@ -54,8 +61,8 @@ int main(int argc, char *argv[]) {
} }
for (int i = 0; i < nballs; i++) { for (int i = 0; i < nballs; i++) {
balls[i].x = rand() % maxX; balls[i].x = rand() % (maxX - 2 * margin) + margin;
balls[i].y = rand() % maxY; balls[i].y = rand() % (maxY - 2 * margin) + margin;
balls[i].dx = (rand() % 2 == 0) ? -1 : 1; balls[i].dx = (rand() % 2 == 0) ? -1 : 1;
balls[i].dy = (rand() % 2 == 0) ? -1 : 1; balls[i].dy = (rand() % 2 == 0) ? -1 : 1;
} }
@ -65,10 +72,12 @@ int main(int argc, char *argv[]) {
// move balls // move balls
for (int i = 0; i < nballs; i++) { for (int i = 0; i < nballs; i++) {
if (balls[i].x + balls[i].dx >= maxX || balls[i].x + balls[i].dx < 0) if (balls[i].x + balls[i].dx >= maxX - margin ||
balls[i].x + balls[i].dx < margin)
balls[i].dx *= -1; balls[i].dx *= -1;
if (balls[i].y + balls[i].dy >= maxY || balls[i].y + balls[i].dy < 0) if (balls[i].y + balls[i].dy >= maxY - margin ||
balls[i].y + balls[i].dy < margin)
balls[i].dy *= -1; balls[i].dy *= -1;
balls[i].x += balls[i].dx; balls[i].x += balls[i].dx;
@ -85,39 +94,41 @@ int main(int argc, char *argv[]) {
for (int k = 0; k < nballs; k++) { for (int k = 0; k < nballs; k++) {
int y = j * 2 + j2; int y = j * 2 + j2;
sum[j2] += 1 / ((float)((i - balls[k].x) * (i - balls[k].x) + sum[j2] += (radius * radius) /
(y - balls[k].y) * (y - balls[k].y))); ((float)((i - balls[k].x) * (i - balls[k].x) +
(y - balls[k].y) * (y - balls[k].y)));
} }
} }
if (!custom) { if (!custom) {
if (sum[0] > radius) { if (sum[0] > sumConst) {
if (sum[1] > radius) { if (sum[1] > sumConst) {
tb_printf(i, j, color | TB_BOLD, 0, "█"); tb_printf(i, j, color | TB_BOLD, 0, "█");
} else { } else {
tb_printf(i, j, color | TB_BOLD, 0, "▀"); tb_printf(i, j, color | TB_BOLD, 0, "▀");
} }
} else if (sum[1] > radius) { } else if (sum[1] > sumConst) {
tb_printf(i, j, color | TB_BOLD, 0, "▄"); tb_printf(i, j, color | TB_BOLD, 0, "▄");
} }
if (rim) { if (rim) {
if (sum[0] > innerRadius) { if (sum[0] > sumConst2) {
if (sum[1] > innerRadius) { if (sum[1] > sumConst2) {
tb_printf(i, j, color, 0, "█"); tb_printf(i, j, color, 0, "█");
} else { } else {
tb_printf(i, j, color | TB_BOLD, color, "▄"); tb_printf(i, j, color | TB_BOLD, color, "▄");
} }
} else if (sum[1] > innerRadius) { } else if (sum[1] > sumConst2) {
tb_printf(i, j, color | TB_BOLD, color, "▀"); tb_printf(i, j, color | TB_BOLD, color, "▀");
} }
} }
} else { } else {
if (sum[0] > radius) { if (sum[0] > sumConst) {
tb_printf(i, j, color | TB_BOLD, 0, custom2); tb_printf(i, j, color | TB_BOLD, 0, custom2);
} }
if (rim) { if (rim) {
if (sum[0] > innerRadius) { if (sum[0] > sumConst2) {
tb_printf(i, j, color, 0, custom); tb_printf(i, j, color, 0, custom);
} }
} }
@ -143,7 +154,7 @@ int parse_options(int argc, char *argv[]) {
if (argc == 1) if (argc == 1)
return 1; return 1;
int c; int c;
while ((c = getopt(argc, argv, ":c:s:r:R:b:F:h")) != -1) { while ((c = getopt(argc, argv, ":c:s:r:R:b:F:Ch")) != -1) {
switch (c) { switch (c) {
case 'c': case 'c':
if (strcmp(optarg, "red") == 0) { if (strcmp(optarg, "red") == 0) {
@ -197,6 +208,9 @@ int parse_options(int argc, char *argv[]) {
case 'F': case 'F':
custom = optarg; custom = optarg;
break; break;
case 'C':
contained = 1;
break;
case 'h': case 'h':
print_help(); print_help();
return 0; return 0;
@ -217,20 +231,23 @@ void print_help() {
printf( printf(
"Usage: lavat [OPTIONS]\n" "Usage: lavat [OPTIONS]\n"
"OPTIONS:\n" "OPTIONS:\n"
" -c COLOR Set color. Available colours: red, blue, yellow, " " -c <COLOR> Set color. Available colours: red, blue, yellow, "
"green, cyan and magenta. \n" "green, cyan and magenta. \n"
" Besides those colors the default one is the normal " " Besides those colors the default one is the normal"
"foreground of your terminal.\n" " foreground of your terminal.\n"
" -s SPEED Set the speed, from 1 to 5. (default 1)\n" " -s <SPEED> Set the speed, from 1 to 5. (default 1)\n"
" -r RADIUS Set the radius of the metaballs, from 1 to 10. " " -r <RADIUS> Set the radius of the metaballs, from 1 to 10. "
"(default: 5)\n" "(default: 5)\n"
" -R RIM Set a \"rim\" for each metaball, sizes from 1 to 5. " " -R <RIM> Set a rim for each metaball, sizes from 1 to 5."
"(default: none)\n" "(default: none)\n"
" This option does not work with the default color\n" " This option does not work with the default "
" -b NBALLS Set the number of metaballs in the simulation, from " "color.\n"
"2 to 20. (default: 10)\n" " -b <NBALLS> Set the number of metaballs in the simulation, "
" -F CHARS Allows for a custom set of chars to be used\n" "from 2 to 20. (default: 10)\n"
" Only ascii symbols are supported for now, " " -F <CHARS> Allows for a custom set of chars to be used\n"
" Only ascii symbols are supported for now, "
"wide/unicode chars may appear broken.\n" "wide/unicode chars may appear broken.\n"
" -h Print help.\n"); " -C Make metaballs bounce right off the edge of the "
"terminal.\n"
" -h Print help.\n");
} }