commit 76b1065dd8f2e285c98c18282f1637abf2fd929c
parent b30ce3a35ef5750eff362b3ca477f73cc8c6e276
Author: Christos Margiolis <christos@margiolis.net>
Date: Thu, 24 Mar 2022 02:20:41 +0200
foo
Diffstat:
29 files changed, 688 insertions(+), 676 deletions(-)
diff --git a/bf/Makefile b/bf/Makefile
@@ -0,0 +1,53 @@
+# See LICENSE file for copyright and license details.
+# bf - bf interpreter
+.POSIX:
+
+include config.mk
+
+BIN = bf
+DIST = ${BIN}-${VERSION}
+MAN1 = ${BIN}.1
+
+SRC = bf.c
+OBJ = ${SRC:.c=.o}
+
+all: options ${BIN}
+
+options:
+ @echo ${BIN} build options:
+ @echo "CFLAGS = ${CFLAGS}"
+ @echo "LDFLAGS = ${LDFLAGS}"
+ @echo "CC = ${CC}"
+
+${BIN}: ${OBJ}
+ ${CC} ${LDFLAGS} ${OBJ} -o $@
+
+.c.o:
+ ${CC} -c ${CFLAGS} $<
+
+dist: clean
+ mkdir -p ${DIST}
+ cp -R tests bf.1 bf.c config.mk Makefile README ${DIST}
+ tar -cf ${DIST}.tar ${DIST}
+ gzip ${DIST}.tar
+ rm -rf ${DIST}
+
+run:
+ ./${BIN}
+
+install: all
+ mkdir -p ${DESTDIR}${PREFIX}/bin ${DESTDIR}${MANPREFIX}/man1
+ cp -f ${BIN} ${DESTDIR}${PREFIX}/bin
+ cp -f ${MAN1} ${DESTDIR}${MANPREFIX}/man1
+ sed "s/VERSION/${VERSION}/g" < ${MAN1} > ${DESTDIR}${MANPREFIX}/man1/${MAN1}
+ chmod 755 ${DESTDIR}${PREFIX}/bin/${BIN}
+ chmod 644 ${DESTDIR}${MANPREFIX}/man1/${MAN1}
+
+uninstall:
+ rm -f ${DESTDIR}${PREFIX}/bin/${BIN} \
+ ${DESTDIR}${MANPREFIX}/man1/${MAN1}
+
+clean:
+ rm -f ${BIN} ${OBJ} ${DIST}.tar.gz *.core
+
+.PHONY: all options clean dist install uninstall run
diff --git a/bf/README b/bf/README
@@ -0,0 +1,17 @@
+bf
+==
+
+A brainfuck interpreter. bf reads input from stdin and interprets it
+as Brainfuck source code.
+
+Usage
+-----
+ cd path/to/bf
+ make
+ ./bf < src.bf
+
+You can install bf by running:
+
+ sudo make install clean
+
+The binary will be installed in usr/local/bin.
diff --git a/bf/bf.1 b/bf/bf.1
@@ -0,0 +1,25 @@
+.Dd bf\-VERSION
+.Dt BRAINFUCK 1
+.Os
+.Sh NAME
+.Nm bf
+.Nd a simple brainfuck interpreter
+.Sh SYNOPSIS
+.Nm
+stdin
+.Sh DESCRIPTION
+.Nm
+reads input from stdin and interprets it
+as Brainfuck source code.
+.Sh EXAMPLES
+To parse a Brainfuck source file
+.Pp
+.Dl $ bf < src.bf
+.Pp
+Alternatively, you can pipe to
+.Nm
+.Pp
+.Dl $ cat src.bf | bf
+.Pp
+.Sh AUTHORS
+.An Christos Margiolis Aq Mt christos@margiolis.net
diff --git a/bf/bf.c b/bf/bf.c
@@ -0,0 +1,76 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#define BUFSIZE 50000
+
+int
+main(int argc, char *argv[])
+{
+ size_t len = 0;
+ int closed, opened, pos = 0;
+ unsigned short *pc;
+ char buf[BUFSIZE], *src;
+
+ while (read(STDIN_FILENO, &buf[len], 1) > 0)
+ len++;
+ buf[len] = '\0';
+
+ if ((src = malloc(len)) == NULL) {
+ perror("malloc");
+ exit(1);
+ }
+ strcpy(src, buf);
+ memset(buf, 0, len);
+
+ for (pc = (unsigned short *)buf; pos < len; pos++) {
+ switch (src[pos]) {
+ case '>':
+ pc++;
+ break;
+ case '<':
+ pc--;
+ break;
+ case '+':
+ (*pc)++;
+ break;
+ case '-':
+ (*pc)--;
+ break;
+ case '.':
+ putchar(*pc);
+ break;
+ case ',':
+ *pc = getchar();
+ break;
+ case '[':
+ if (!(*pc)) {
+ for (opened = 0, pos++; pos < len; pos++) {
+ if (src[pos] == ']' && !opened)
+ break;
+ else if (src[pos] == '[')
+ opened++;
+ else if (src[pos] == ']')
+ opened--;
+ }
+ }
+ break;
+ case ']':
+ if (*pc) {
+ for (closed = 0, pos--; pos >= 0; pos--) {
+ if (src[pos] == '[' && !closed)
+ break;
+ else if (src[pos] == ']')
+ closed++;
+ else if (src[pos] == '[')
+ closed--;
+ }
+ }
+ break;
+ }
+ }
+ free(src);
+
+ return (0);
+}
diff --git a/bf/config.mk b/bf/config.mk
@@ -0,0 +1,22 @@
+# See LICENSE file for copyright and license details.
+# bf version
+VERSION = 0.1
+
+# paths
+PREFIX = /usr/local
+MANPREFIX = ${PREFIX}/share/man
+# OpenBSD
+#MANPREFIX = ${PREFIX}/man
+
+# includes and libs
+INCS = -Iinclude
+LIBS = -Llib
+
+# flags
+CPPFLAGS = -D_DEFAULT_SOURCE -D_BSD_SOURCE -D_POSIX_C_SOURCE=200809L \
+ -D_XOPEN_SOURCE=700 -DVERSION=\"${VERSION}\"
+CFLAGS = -std=c99 -pedantic -Wall -Os ${INCS} ${CPPFLAGS}
+LDFLAGS = ${LIBS}
+
+# compiler
+CC = cc
diff --git a/brainfuck/tests/hello.bf b/bf/tests/hello.bf
diff --git a/brainfuck/tests/triangle.bf b/bf/tests/triangle.bf
diff --git a/bounce.c b/bounce.c
@@ -0,0 +1,55 @@
+#include <curses.h>
+#include <stdio.h>
+#include <unistd.h>
+
+struct ball {
+ int x;
+ int y;
+ int vx;
+ int vy;
+ int xmax;
+ int ymax;
+};
+
+static void
+cursesinit(void)
+{
+ if (!initscr())
+ exit(1);
+ cbreak();
+ noecho();
+ curs_set(0);
+}
+
+static void
+collision(struct ball *b)
+{
+ if (b->y < 2 || b->y > b->ymax-1)
+ b->vy *= -1.0f;
+ if (b->x < 1 || b->x > b->xmax-1)
+ b->vx *= -1.0f;
+ b->y += b->vy;
+ b->x += b->vx;
+}
+
+int
+main(int argc, char *argv[])
+{
+ struct ball b = {1, 2, 1, 1, 0, 0};
+
+ cursesinit();
+ getmaxyx(stdscr, b.ymax, b.xmax);
+
+ for (;;) {
+ erase();
+ collision(&b);
+ mvaddch(b.y, b.x, 'O');
+ mvprintw(0, 0, "(x, y) = (%d, %d)", b.x, b.y);
+ mvhline(1, 0, ACS_HLINE, b.xmax);
+ refresh();
+ usleep(15000);
+ }
+ endwin();
+
+ return (0);
+}
diff --git a/brainfuck/Makefile b/brainfuck/Makefile
@@ -1,53 +0,0 @@
-# See LICENSE file for copyright and license details.
-# brainfuck - brainfuck interpreter
-.POSIX:
-
-include config.mk
-
-BIN = brainfuck
-DIST = ${BIN}-${VERSION}
-MAN1 = ${BIN}.1
-
-SRC = brainfuck.c
-OBJ = ${SRC:.c=.o}
-
-all: options ${BIN}
-
-options:
- @echo ${BIN} build options:
- @echo "CFLAGS = ${CFLAGS}"
- @echo "LDFLAGS = ${LDFLAGS}"
- @echo "CC = ${CC}"
-
-${BIN}: ${OBJ}
- ${CC} ${LDFLAGS} ${OBJ} -o $@
-
-.c.o:
- ${CC} -c ${CFLAGS} $<
-
-dist: clean
- mkdir -p ${DIST}
- cp -R tests brainfuck.1 brainfuck.c config.mk Makefile README ${DIST}
- tar -cf ${DIST}.tar ${DIST}
- gzip ${DIST}.tar
- rm -rf ${DIST}
-
-run:
- ./${BIN}
-
-install: all
- mkdir -p ${DESTDIR}${PREFIX}/bin ${DESTDIR}${MANPREFIX}/man1
- cp -f ${BIN} ${DESTDIR}${PREFIX}/bin
- cp -f ${MAN1} ${DESTDIR}${MANPREFIX}/man1
- sed "s/VERSION/${VERSION}/g" < ${MAN1} > ${DESTDIR}${MANPREFIX}/man1/${MAN1}
- chmod 755 ${DESTDIR}${PREFIX}/bin/${BIN}
- chmod 644 ${DESTDIR}${MANPREFIX}/man1/${MAN1}
-
-uninstall:
- rm -f ${DESTDIR}${PREFIX}/bin/${BIN} \
- ${DESTDIR}${MANPREFIX}/man1/${MAN1}
-
-clean:
- rm -f ${BIN} ${OBJ} ${DIST}.tar.gz *.core
-
-.PHONY: all options clean dist install uninstall run
diff --git a/brainfuck/README b/brainfuck/README
@@ -1,16 +0,0 @@
-brainfuck - a brainfuck interpreter
-==========================================
-brainfuck reads input from stdin and interprets it
-as Brainfuck source code.
-
-Usage
------
- cd path/to/brainfuck
- make
- ./brainfuck < src.bf
-
-You can install brainfuck by running:
-
- sudo make install clean
-
-The binary will be installed in usr/local/bin.
diff --git a/brainfuck/brainfuck.1 b/brainfuck/brainfuck.1
@@ -1,25 +0,0 @@
-.Dd brainfuck\-VERSION
-.Dt BRAINFUCK 1
-.Os
-.Sh NAME
-.Nm brainfuck
-.Nd a simple brainfuck interpreter
-.Sh SYNOPSIS
-.Nm
-stdin
-.Sh DESCRIPTION
-.Nm
-reads input from stdin and interprets it
-as Brainfuck source code.
-.Sh EXAMPLES
-To parse a Brainfuck source file
-.Pp
-.Dl $ brainfuck < src.bf
-.Pp
-Alternatively, you can pipe to
-.Nm
-.Pp
-.Dl $ cat src.bf | brainfuck
-.Pp
-.Sh AUTHORS
-.An Christos Margiolis Aq Mt christos@margiolis.net
diff --git a/brainfuck/brainfuck.c b/brainfuck/brainfuck.c
@@ -1,76 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#define BUFSIZE 50000
-
-int
-main(int argc, char *argv[])
-{
- size_t len = 0;
- int closed, opened, pos = 0;
- unsigned short *pc;
- char buf[BUFSIZE], *src;
-
- while (read(STDIN_FILENO, &buf[len], 1) > 0)
- len++;
- buf[len] = '\0';
-
- if ((src = malloc(len)) == NULL) {
- perror("malloc");
- exit(1);
- }
- strcpy(src, buf);
- memset(buf, 0, len);
-
- for (pc = (unsigned short *)buf; pos < len; pos++) {
- switch (src[pos]) {
- case '>':
- pc++;
- break;
- case '<':
- pc--;
- break;
- case '+':
- (*pc)++;
- break;
- case '-':
- (*pc)--;
- break;
- case '.':
- putchar(*pc);
- break;
- case ',':
- *pc = getchar();
- break;
- case '[':
- if (!(*pc)) {
- for (opened = 0, pos++; pos < len; pos++) {
- if (src[pos] == ']' && !opened)
- break;
- else if (src[pos] == '[')
- opened++;
- else if (src[pos] == ']')
- opened--;
- }
- }
- break;
- case ']':
- if (*pc) {
- for (closed = 0, pos--; pos >= 0; pos--) {
- if (src[pos] == '[' && !closed)
- break;
- else if (src[pos] == ']')
- closed++;
- else if (src[pos] == '[')
- closed--;
- }
- }
- break;
- }
- }
- free(src);
-
- return 0;
-}
diff --git a/brainfuck/config.mk b/brainfuck/config.mk
@@ -1,20 +0,0 @@
-# See LICENSE file for copyright and license details.
-# brainfuck version
-VERSION = 0.1
-
-# paths
-PREFIX = /usr/local
-MANPREFIX = ${PREFIX}/share/man
-
-# includes and libs
-INCS = -Iinclude
-LIBS = -Llib
-
-# flags
-CPPFLAGS = -D_DEFAULT_SOURCE -D_BSD_SOURCE -D_POSIX_C_SOURCE=200809L \
- -D_XOPEN_SOURCE=700 -DVERSION=\"${VERSION}\"
-CFLAGS = -std=c99 -pedantic -Wall -Os ${INCS} ${CPPFLAGS}
-LDFLAGS = ${LIBS}
-
-# compiler
-CC = cc
diff --git a/bytepusher/bytepusher.c b/bytepusher/bytepusher.c
@@ -33,7 +33,7 @@ evhandle(void)
keybits = mem[0] << 8 | mem[1];
while (SDL_PollEvent(&ev)) {
if (ev.type == SDL_QUIT || ev.key.keysym.sym == SDLK_ESCAPE)
- return 0;
+ return (0);
if (ev.type == SDL_KEYDOWN)
for (i = 0; i < 16; i++)
if (ev.key.keysym.sym == keys[i])
@@ -42,7 +42,7 @@ evhandle(void)
}
mem[0] = keybits >> 8;
mem[1] = keybits & 0xFF;
- return 1;
+ return (1);
}
static void
@@ -89,11 +89,11 @@ main(int argc, char *argv[])
if (argc != 2) {
fprintf(stderr, "usage: %s rom\n", argv[0]);
- return 1;
+ return (1);
}
if ((fp = fopen(argv[1], "r")) == NULL) {
fprintf(stderr, "fopen: %s\n", argv[1]);
- return 1;
+ return (1);
}
for (i = 0; (mem[i] = fgetc(fp)) != EOF && i < sizeof(mem); i++)
;
@@ -108,7 +108,7 @@ main(int argc, char *argv[])
if (!win || !ren || !tex) {
fprintf(stderr, "SDL error: %s\n", SDL_GetError());
- return 1;
+ return (1);
}
for (r = 0; r < 6; r++)
@@ -132,5 +132,5 @@ main(int argc, char *argv[])
SDL_DestroyWindow(win);
SDL_Quit();
- return 0;
+ return (0);
}
diff --git a/bytepusher/config.mk b/bytepusher/config.mk
@@ -5,6 +5,8 @@ VERSION = 0.1
# paths
PREFIX = /usr/local
MANPREFIX = ${PREFIX}/share/man
+# OpenBSD
+#MANPREFIX = ${PREFIX}/man
# includes and libs
INCS = -Iinclude -I${PREFIX}/include
diff --git a/fnc/Makefile b/fnc/Makefile
@@ -4,6 +4,8 @@
PREFIX = /usr/local
MAN_DIR = ${PREFIX}/share/man/man1
+# OpenBSD
+#MAN_DIR = ${PREFIX}//man/man1
BIN_DIR = ${PREFIX}/bin
BIN = fnc
diff --git a/mandelbrot.c b/mandelbrot.c
@@ -0,0 +1,51 @@
+#include <math.h>
+#include <stdio.h>
+
+#define IMGW 1920
+#define IMGH 1080
+#define MAXN 1024
+#define MINR (-1.5)
+#define MAXR 0.7
+#define MINI (-1.0)
+#define MAXI 1.0
+
+#define TOREAL(x) ((x) * ((MAXR - MINR) / IMGW) + MINR)
+#define TOIMGN(y) ((y) * ((MAXI - MINI) / IMGH) + MINI)
+
+static int
+fmandelbrot(double cr, double ci)
+{
+ double zr = 0.0, zi = 0.0, tmp;
+ int i = 0;
+
+ for (; i < MAXN && (zr * zr + zi * zi) < 4.0; i++) {
+ tmp = zr * zr - zi * zi + cr;
+ zi = 2.0 * zr * zi + ci;
+ zr = tmp;
+ }
+
+ return (i);
+}
+
+int
+main(int argc, char *argv[])
+{
+ double cr, ci;
+ int x, y, n, r, g, b;
+
+ printf("P3\n%d %d\n256\n", IMGW, IMGH);
+ for (y = 0; y < IMGH; y++) {
+ for (x = 0; x < IMGW; x++) {
+ cr = TOREAL(x);
+ ci = TOIMGN(y);
+ n = fmandelbrot(cr, ci);
+ r = (n % 256);
+ g = ((int)(n * sinf(M_PI)) % 256);
+ b = ((n * 3) % 256);
+ printf("%d %d %d ", r, g, b);
+ }
+ printf("\n");
+ }
+
+ return (0);
+}
diff --git a/minecurses/config.mk b/minecurses/config.mk
@@ -5,6 +5,8 @@ VERSION = 0.1
# paths
PREFIX = /usr/local
MANPREFIX = ${PREFIX}/share/man
+# OpenBSD
+#MANPREFIX = ${PREFIX}/man
# includes and libs
INCS = -Iinclude
diff --git a/minecurses/minecurses.c b/minecurses/minecurses.c
@@ -224,7 +224,7 @@ valset(int ymax, int offy, const char *msg, int min, int max)
scanw("%d", &val);
} while (val < min || val > max);
- return val;
+ return (val);
}
static int
@@ -241,7 +241,7 @@ adjcount(const struct minecurses *m, int r, int c)
if (!OUT_OF_BOUNDS(m, r+1, c+1) && IS_MINE(m, r+1, c+1)) n++; // south-east
if (!OUT_OF_BOUNDS(m, r-1, c+1) && IS_MINE(m, r-1, c+1)) n++; // south-west
- return n;
+ return (n);
}
static void
@@ -344,7 +344,7 @@ emalloc(size_t nb)
if ((p = malloc(nb)) == NULL)
err(1, "malloc");
- return p;
+ return (p);
}
int
@@ -363,5 +363,5 @@ main(int argc, char *argv[])
endwin();
free(m);
- return 0;
+ return (0);
}
diff --git a/morse/morse.cpp b/morse/morse.cpp
@@ -58,7 +58,7 @@ main(int argc, char *argv[])
};
if (SDL_Init(SDL_INIT_AUDIO) < 0)
- return -1;
+ return (1);
Mix_OpenAudio(44100, MIX_DEFAULT_FORMAT, 1, 4096);
dot = Mix_LoadWAV("dot.wav");
dash = Mix_LoadWAV("dash.wav");
@@ -93,5 +93,5 @@ main(int argc, char *argv[])
Mix_CloseAudio();
SDL_Quit();
- return 0;
+ return (0);
}
diff --git a/nnc.cpp b/nnc.cpp
@@ -0,0 +1,169 @@
+#include <algorithm>
+#include <cmath>
+#include <cstdlib>
+#include <ctime>
+#include <vector>
+#include <curses.h>
+
+static int ymax()
+{
+ return (getmaxy(stdscr));
+}
+
+static int xmax()
+{
+ return (getmaxx(stdscr));
+}
+
+struct Color {
+ int x, y;
+ int color;
+
+ Color(int x, int y, int color)
+ :x(x), y(y), color(color) {}
+
+ int dist(const Color& c)
+ {
+ int dx = this->x - c.x;
+ int dy = this->y - c.y;
+
+ return (std::sqrt(dx * dx + dy * dy));
+ }
+};
+
+struct Blue: public Color {
+ Blue(int x, int y, int color)
+ :Color(x, y, color) {}
+};
+
+struct Green: public Color {
+ Green(int x, int y, int color)
+ :Color(x, y, color) {}
+};
+
+struct White: public Color {
+ White(int x, int y, int color)
+ :Color(x, y, color) {}
+};
+
+static void
+cursesinit()
+{
+ if (!initscr())
+ exit(1);
+ cbreak();
+ noecho();
+ curs_set(0);
+ start_color();
+ init_pair(1, COLOR_BLUE, COLOR_BLUE);
+ init_pair(2, COLOR_GREEN, COLOR_GREEN);
+ init_pair(3, COLOR_WHITE, COLOR_WHITE);
+}
+
+static void
+makepts(std::vector<Color *>& points)
+{
+ int x, y;
+
+ for (std::size_t i = 0; i < 5; i++) {
+ x = std::rand() % (xmax() - 1);
+ y = std::rand() % (ymax() - 1);
+ points.push_back(new Blue(x, y, 1));
+ }
+ for (std::size_t i = 0; i < 5; i++) {
+ x = std::rand() % (xmax() - 1);
+ y = std::rand() % (ymax() - 1);
+ points.push_back(new Green(x, y, 2));
+ }
+}
+
+static void
+makewts(std::vector<White *>& whites)
+{
+ int x, y;
+
+ for (std::size_t i = 0; i < 5; i++) {
+ x = std::rand() % (xmax() - 1);
+ y = std::rand() % (ymax() - 1);
+ whites.push_back(new White(x, y, 3));
+ }
+}
+
+template<typename T> static void
+print(const std::vector<T *>& vec)
+{
+ for (auto& v : vec) {
+ attron(COLOR_PAIR(v->color));
+ mvaddch(v->y, v->x, ACS_CKBOARD);
+ attroff(COLOR_PAIR(v->color));
+ }
+}
+
+static std::vector<int>
+calc_dists(const std::vector<Color *>& points, const White& w)
+{
+ std::vector<int> dists;
+
+ for (auto& point : points)
+ dists.push_back(point->dist(w));
+ return (dists);
+}
+
+static void
+find_nn(const std::vector<Color *>& points, std::vector<White *>& whites)
+{
+ std::vector<int> dists;
+ int mindist;
+
+ for (const auto& point : points) {
+ for (auto&& white : whites) {
+ dists = calc_dists(points, *white);
+ mindist = *std::min_element(dists.begin(), dists.end());
+ if (point->dist(*white) == mindist)
+ white->color = point->color;
+ }
+ }
+}
+
+template<typename T> static void
+dealloc(std::vector<T *>& vec)
+{
+ for (auto&& v : vec)
+ if (v != nullptr)
+ delete v;
+ if (!vec.empty())
+ vec.clear();
+}
+
+int
+main(int argc, char **argv)
+{
+ std::vector<Color *> points;
+ std::vector<White *> whites;
+
+ cursesinit();
+ std::srand(std::time(nullptr));
+
+ makepts(points);
+ makewts(whites);
+
+ erase();
+ print<Color>(points);
+ print<White>(whites);
+ refresh();
+ getch();
+
+ find_nn(points, whites);
+
+ erase();
+ print<Color>(points);
+ print<White>(whites);
+ refresh();
+ getch();
+
+ endwin();
+ dealloc<Color>(points);
+ dealloc<White>(whites);
+
+ return (0);
+}
diff --git a/other/bounce.c b/other/bounce.c
@@ -1,55 +0,0 @@
-#include <curses.h>
-#include <stdio.h>
-#include <unistd.h>
-
-struct ball {
- int x;
- int y;
- int vx;
- int vy;
- int xmax;
- int ymax;
-};
-
-static void
-cursesinit(void)
-{
- if (!initscr())
- exit(1);
- cbreak();
- noecho();
- curs_set(0);
-}
-
-static void
-collision(struct ball *b)
-{
- if (b->y < 2 || b->y > b->ymax-1)
- b->vy *= -1.0f;
- if (b->x < 1 || b->x > b->xmax-1)
- b->vx *= -1.0f;
- b->y += b->vy;
- b->x += b->vx;
-}
-
-int
-main(int argc, char *argv[])
-{
- struct ball b = {1, 2, 1, 1, 0, 0};
-
- cursesinit();
- getmaxyx(stdscr, b.ymax, b.xmax);
-
- for (;;) {
- erase();
- collision(&b);
- mvaddch(b.y, b.x, 'O');
- mvprintw(0, 0, "(x, y) = (%d, %d)", b.x, b.y);
- mvhline(1, 0, ACS_HLINE, b.xmax);
- refresh();
- usleep(15000);
- }
- endwin();
-
- return 0;
-}
diff --git a/other/mandelbrot.c b/other/mandelbrot.c
@@ -1,51 +0,0 @@
-#include <math.h>
-#include <stdio.h>
-
-#define IMGW 1920
-#define IMGH 1080
-#define MAXN 1024
-#define MINR (-1.5)
-#define MAXR 0.7
-#define MINI (-1.0)
-#define MAXI 1.0
-
-#define TOREAL(x) ((x) * ((MAXR - MINR) / IMGW) + MINR)
-#define TOIMGN(y) ((y) * ((MAXI - MINI) / IMGH) + MINI)
-
-static int
-fmandelbrot(double cr, double ci)
-{
- double zr = 0.0, zi = 0.0, tmp;
- int i = 0;
-
- for (; i < MAXN && (zr * zr + zi * zi) < 4.0; i++) {
- tmp = zr * zr - zi * zi + cr;
- zi = 2.0 * zr * zi + ci;
- zr = tmp;
- }
-
- return i;
-}
-
-int
-main(int argc, char *argv[])
-{
- double cr, ci;
- int x, y, n, r, g, b;
-
- printf("P3\n%d %d\n256\n", IMGW, IMGH);
- for (y = 0; y < IMGH; y++) {
- for (x = 0; x < IMGW; x++) {
- cr = TOREAL(x);
- ci = TOIMGN(y);
- n = fmandelbrot(cr, ci);
- r = (n % 256);
- g = ((int)(n * sinf(M_PI)) % 256);
- b = ((n * 3) % 256);
- printf("%d %d %d ", r, g, b);
- }
- printf("\n");
- }
-
- return 0;
-}
diff --git a/other/nnc.cpp b/other/nnc.cpp
@@ -1,169 +0,0 @@
-#include <algorithm>
-#include <cmath>
-#include <cstdlib>
-#include <ctime>
-#include <vector>
-#include <curses.h>
-
-static int ymax()
-{
- return getmaxy(stdscr);
-}
-
-static int xmax()
-{
- return getmaxx(stdscr);
-}
-
-struct Color {
- int x, y;
- int color;
-
- Color(int x, int y, int color)
- :x(x), y(y), color(color) {}
-
- int dist(const Color& c)
- {
- int dx = this->x - c.x;
- int dy = this->y - c.y;
-
- return std::sqrt(dx * dx + dy * dy);
- }
-};
-
-struct Blue: public Color {
- Blue(int x, int y, int color)
- :Color(x, y, color) {}
-};
-
-struct Green: public Color {
- Green(int x, int y, int color)
- :Color(x, y, color) {}
-};
-
-struct White: public Color {
- White(int x, int y, int color)
- :Color(x, y, color) {}
-};
-
-static void
-cursesinit()
-{
- if (!initscr())
- exit(1);
- cbreak();
- noecho();
- curs_set(0);
- start_color();
- init_pair(1, COLOR_BLUE, COLOR_BLUE);
- init_pair(2, COLOR_GREEN, COLOR_GREEN);
- init_pair(3, COLOR_WHITE, COLOR_WHITE);
-}
-
-static void
-makepts(std::vector<Color *>& points)
-{
- int x, y;
-
- for (std::size_t i = 0; i < 5; i++) {
- x = std::rand() % (xmax() - 1);
- y = std::rand() % (ymax() - 1);
- points.push_back(new Blue(x, y, 1));
- }
- for (std::size_t i = 0; i < 5; i++) {
- x = std::rand() % (xmax() - 1);
- y = std::rand() % (ymax() - 1);
- points.push_back(new Green(x, y, 2));
- }
-}
-
-static void
-makewts(std::vector<White *>& whites)
-{
- int x, y;
-
- for (std::size_t i = 0; i < 5; i++) {
- x = std::rand() % (xmax() - 1);
- y = std::rand() % (ymax() - 1);
- whites.push_back(new White(x, y, 3));
- }
-}
-
-template<typename T> static void
-print(const std::vector<T *>& vec)
-{
- for (auto& v : vec) {
- attron(COLOR_PAIR(v->color));
- mvaddch(v->y, v->x, ACS_CKBOARD);
- attroff(COLOR_PAIR(v->color));
- }
-}
-
-static std::vector<int>
-calc_dists(const std::vector<Color *>& points, const White& w)
-{
- std::vector<int> dists;
-
- for (auto& point : points)
- dists.push_back(point->dist(w));
- return dists;
-}
-
-static void
-find_nn(const std::vector<Color *>& points, std::vector<White *>& whites)
-{
- std::vector<int> dists;
- int mindist;
-
- for (const auto& point : points) {
- for (auto&& white : whites) {
- dists = calc_dists(points, *white);
- mindist = *std::min_element(dists.begin(), dists.end());
- if (point->dist(*white) == mindist)
- white->color = point->color;
- }
- }
-}
-
-template<typename T> static void
-dealloc(std::vector<T *>& vec)
-{
- for (auto&& v : vec)
- if (v != nullptr)
- delete v;
- if (!vec.empty())
- vec.clear();
-}
-
-int
-main(int argc, char **argv)
-{
- std::vector<Color *> points;
- std::vector<White *> whites;
-
- cursesinit();
- std::srand(std::time(nullptr));
-
- makepts(points);
- makewts(whites);
-
- erase();
- print<Color>(points);
- print<White>(whites);
- refresh();
- getch();
-
- find_nn(points, whites);
-
- erase();
- print<Color>(points);
- print<White>(whites);
- refresh();
- getch();
-
- endwin();
- dealloc<Color>(points);
- dealloc<White>(whites);
-
- return 0;
-}
diff --git a/other/snake.cpp b/other/snake.cpp
@@ -1,187 +0,0 @@
-#include <chrono>
-#include <cstdlib>
-#include <ctime>
-#include <list>
-#include <thread>
-
-#include <curses.h>
-
-#define XMAX (getmaxx(stdscr))
-#define YMAX (getmaxy(stdscr))
-
-struct Snake {
- struct Seg {
- int x;
- int y;
- };
- std::list<Seg> body;
- int x;
- int y;
- int score;
- bool dead;
-
- Snake();
- void update(int key);
- void grow();
- void draw();
- bool collided();
-};
-
-struct Food {
- int x;
- int y;
-
- Food();
- void spawn();
- void draw();
-};
-
-Snake::Snake()
-{
- y = YMAX >> 1;
- x = XMAX >> 1;
- body = {{x, y}, {x + 1, y + 1}};
- score = 1;
- dead = false;
-}
-
-void
-Snake::update(int key)
-{
- switch (key) {
- case KEY_UP:
- y--;
- body.push_front({body.front().x, body.front().y - 1});
- break;
- case KEY_DOWN:
- y++;
- body.push_front({body.front().x, body.front().y + 1});
- break;
- case KEY_LEFT:
- x--;
- body.push_front({body.front().x - 1, body.front().y});
- break;
- case KEY_RIGHT:
- x++;
- body.push_front({body.front().x + 1, body.front().y});
- break;
- default:
- return;
- }
- body.pop_back();
-}
-
-void
-Snake::grow()
-{
- for (int i = 0; i < 3; i++)
- body.push_back({body.back().x, body.back().y});
-}
-
-void
-Snake::draw()
-{
- for (const auto& b : body)
- mvaddch(b.y, b.x, ACS_CKBOARD);
-}
-
-bool
-Snake::collided()
-{
- dead = y < 2 || y > YMAX - 1 || x < 1 || x > XMAX - 1;
- for (std::list<Seg>::iterator i = body.begin(); i != body.end(); i++)
- if (i != body.begin()
- && i->x == body.front().x
- && i->y == body.front().y)
- dead = true;
- return dead;
-}
-
-Food::Food()
-{
- x = std::rand() % XMAX - 1;
- y = std::rand() % (YMAX - 2) + 2;
-}
-
-void
-Food::spawn()
-{
- x = std::rand() % XMAX - 1;
- y = std::rand() % (YMAX - 2) + 2;
-}
-
-void
-Food::draw()
-{
- mvaddch(y, x, 'O');
-}
-
-static void
-initcurses()
-{
- if (!initscr())
- exit(1);
- cbreak();
- noecho();
- curs_set(0);
- keypad(stdscr, true);
- nodelay(stdscr, true);
-}
-
-static bool
-kbhit()
-{
- int c;
-
- if ((c = getch()) != ERR) {
- ungetch(c);
- return true;
- }
- return false;
-}
-
-int
-main(int argc, char *argv[])
-{
- initcurses();
- std::srand(std::time(nullptr));
-
- Snake snake;
- Food food;
- int key, nextkey;
-
- key = KEY_RIGHT;
-
- for (;;) {
- erase();
- if (kbhit()) {
- if ((nextkey = getch()) != key)
- key = nextkey;
- else
- continue;
- }
-
- snake.update(key);
- if (snake.collided() || key == 'q')
- break;
-
- if (snake.body.front().y == food.y
- && snake.body.front().x == food.x) {
- food.spawn();
- snake.grow();
- snake.score++;
- }
-
- food.draw();
- snake.draw();
-
- mvprintw(0, 0, "Score: %d", snake.score);
- mvhline(1, 0, ACS_HLINE, XMAX);
- refresh();
- std::this_thread::sleep_for(std::chrono::milliseconds(60));
- }
-
- endwin();
-
- return 0;
-}
diff --git a/shitcoin/README b/shitcoin/README
@@ -1,6 +1,7 @@
-shitcoin - a useless cryptocurrency
-====================================
-don't use it, it's just for fun
+shitcoin
+========
+
+A usless cryptocurrency. Don't use it, it's just for fun.
Installation
-------------
diff --git a/shitcoin/config.mk b/shitcoin/config.mk
@@ -5,6 +5,8 @@ VERSION = 0.1
# paths
PREFIX = /usr/local
MANPREFIX = ${PREFIX}/share/man
+# OpenBSD
+#MANPREFIX = ${PREFIX}/man
# includes and libs
INCS = -Iinclude
diff --git a/shitcoin/shitcoin.c b/shitcoin/shitcoin.c
@@ -77,7 +77,7 @@ newblock(const char *saddr, const char *raddr, long amount, const char *prevhash
strcpy(b->hash, calchash(b));
b->nonce = 0;
- return b;
+ return (b);
}
static char *
@@ -101,7 +101,7 @@ calchash(struct block *b)
sprintf(&res[i << 1], "%02x", hash[i]);
res[HASH_LEN] = '\0';
- return res;
+ return (res);
}
static void
@@ -160,7 +160,7 @@ mineblock(struct block *b)
static struct block *
lastblock(void)
{
- return chain->blocks[chain->nblocks - 1];
+ return (chain->blocks[chain->nblocks - 1]);
}
static int
@@ -171,13 +171,13 @@ validchain(void)
for (; i < chain->nblocks; i++) {
if (i != 0 && strcmp(chain->blocks[i]->prevhash,
chain->blocks[i-1]->hash))
- return 0;
+ return (0);
if (i != 0 && strcmp(chain->blocks[i]->hash,
calchash(chain->blocks[i])))
- return 0;
+ return (0);
}
- return 1;
+ return (1);
}
static long
@@ -193,7 +193,7 @@ balance(const char *addr)
bal += chain->blocks[i]->data->amount;
}
- return bal;
+ return (bal);
}
static void
@@ -236,7 +236,7 @@ emalloc(size_t nb)
if ((p = malloc(nb)) == NULL)
err(1, "malloc");
- return p;
+ return (p);
}
int
@@ -254,5 +254,5 @@ main(int argc, char *argv[])
cleanchain();
- return 0;
+ return (0);
}
diff --git a/snake.cpp b/snake.cpp
@@ -0,0 +1,187 @@
+#include <chrono>
+#include <cstdlib>
+#include <ctime>
+#include <list>
+#include <thread>
+
+#include <curses.h>
+
+#define XMAX (getmaxx(stdscr))
+#define YMAX (getmaxy(stdscr))
+
+struct Snake {
+ struct Seg {
+ int x;
+ int y;
+ };
+ std::list<Seg> body;
+ int x;
+ int y;
+ int score;
+ bool dead;
+
+ Snake();
+ void update(int key);
+ void grow();
+ void draw();
+ bool collided();
+};
+
+struct Food {
+ int x;
+ int y;
+
+ Food();
+ void spawn();
+ void draw();
+};
+
+Snake::Snake()
+{
+ y = YMAX >> 1;
+ x = XMAX >> 1;
+ body = {{x, y}, {x + 1, y + 1}};
+ score = 1;
+ dead = false;
+}
+
+void
+Snake::update(int key)
+{
+ switch (key) {
+ case KEY_UP:
+ y--;
+ body.push_front({body.front().x, body.front().y - 1});
+ break;
+ case KEY_DOWN:
+ y++;
+ body.push_front({body.front().x, body.front().y + 1});
+ break;
+ case KEY_LEFT:
+ x--;
+ body.push_front({body.front().x - 1, body.front().y});
+ break;
+ case KEY_RIGHT:
+ x++;
+ body.push_front({body.front().x + 1, body.front().y});
+ break;
+ default:
+ return;
+ }
+ body.pop_back();
+}
+
+void
+Snake::grow()
+{
+ for (int i = 0; i < 3; i++)
+ body.push_back({body.back().x, body.back().y});
+}
+
+void
+Snake::draw()
+{
+ for (const auto& b : body)
+ mvaddch(b.y, b.x, ACS_CKBOARD);
+}
+
+bool
+Snake::collided()
+{
+ dead = y < 2 || y > YMAX - 1 || x < 1 || x > XMAX - 1;
+ for (std::list<Seg>::iterator i = body.begin(); i != body.end(); i++)
+ if (i != body.begin()
+ && i->x == body.front().x
+ && i->y == body.front().y)
+ dead = true;
+ return (dead);
+}
+
+Food::Food()
+{
+ x = std::rand() % XMAX - 1;
+ y = std::rand() % (YMAX - 2) + 2;
+}
+
+void
+Food::spawn()
+{
+ x = std::rand() % XMAX - 1;
+ y = std::rand() % (YMAX - 2) + 2;
+}
+
+void
+Food::draw()
+{
+ mvaddch(y, x, 'O');
+}
+
+static void
+initcurses()
+{
+ if (!initscr())
+ exit(1);
+ cbreak();
+ noecho();
+ curs_set(0);
+ keypad(stdscr, true);
+ nodelay(stdscr, true);
+}
+
+static bool
+kbhit()
+{
+ int c;
+
+ if ((c = getch()) != ERR) {
+ ungetch(c);
+ return (true);
+ }
+ return (false);
+}
+
+int
+main(int argc, char *argv[])
+{
+ initcurses();
+ std::srand(std::time(nullptr));
+
+ Snake snake;
+ Food food;
+ int key, nextkey;
+
+ key = KEY_RIGHT;
+
+ for (;;) {
+ erase();
+ if (kbhit()) {
+ if ((nextkey = getch()) != key)
+ key = nextkey;
+ else
+ continue;
+ }
+
+ snake.update(key);
+ if (snake.collided() || key == 'q')
+ break;
+
+ if (snake.body.front().y == food.y
+ && snake.body.front().x == food.x) {
+ food.spawn();
+ snake.grow();
+ snake.score++;
+ }
+
+ food.draw();
+ snake.draw();
+
+ mvprintw(0, 0, "Score: %d", snake.score);
+ mvhline(1, 0, ACS_HLINE, XMAX);
+ refresh();
+ std::this_thread::sleep_for(std::chrono::milliseconds(60));
+ }
+
+ endwin();
+
+ return (0);
+}
