1 files changed, 187 insertions, 0 deletions
diff --git a/help.c b/help.c
new file mode 100755
index 0000000..8360143
--- /dev/null
+++ b/help.c
@@ -0,0 +1,187 @@
+#if 0
+exec cc -Wall -Wextra -pedantic $@ -o help $0
+#endif
+
+#include <err.h>
+#include <stdint.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <sysexits.h>
+#include <unistd.h>
+
+#include "torus.h"
+
+static int client;
+
+static void clientMessage(const struct ClientMessage *msg) {
+    ssize_t len = send(client, msg, sizeof(*msg), 0);
+    if (len < 0) err(EX_IOERR, "send");
+}
+
+static void clientMove(int8_t dx, int8_t dy) {
+    struct ClientMessage msg = { .type = CLIENT_MOVE };
+    msg.data.m.dx = dx;
+    msg.data.m.dy = dy;
+    clientMessage(&msg);
+}
+
+static void clientColor(uint8_t color) {
+    struct ClientMessage msg = { .type = CLIENT_COLOR };
+    msg.data.c = color;
+    clientMessage(&msg);
+}
+
+static void clientPut(char cell) {
+    struct ClientMessage msg = { .type = CLIENT_PUT };
+    msg.data.p = cell;
+    clientMessage(&msg);
+}
+
+#define DELAY (100000)
+
+static void clear(uint8_t width, uint8_t height) {
+    uint8_t x = 0;
+    for (uint8_t y = 0; y < height; ++y) {
+        if (x) {
+            for (; x > 0; --x) {
+                clientPut(' ');
+                clientMove(-1, 0);
+                usleep(DELAY / 10);
+            }
+            clientPut(' ');
+            x = 0;
+        } else {
+            for (; x < width; ++x) {
+                clientPut(' ');
+                clientMove(1, 0);
+                usleep(DELAY / 10);
+            }
+            clientPut(' ');
+            x = width;
+        }
+        clientMove(0, 1);
+    }
+    clientMove(-x, -height);
+}
+
+static void white(void) {
+    clientColor(COLOR_WHITE);
+}
+
+static void brite(void) {
+    clientColor(COLOR_BRIGHT | COLOR_WHITE);
+}
+
+static int8_t lineLen;
+
+static void string(const char *str) {
+    for (; *str; ++str) {
+        clientPut(*str);
+        clientMove(1, 0);
+        lineLen++;
+        usleep(DELAY);
+    }
+}
+
+static void enter(void) {
+    clientMove(-lineLen, 1);
+    lineLen = 0;
+    usleep(DELAY);
+}
+
+static void mvPut(int8_t dx, int8_t dy, char cell) {
+    clientMove(dx, dy);
+    clientPut(cell);
+    usleep(DELAY);
+}
+
+int main() {
+    client = socket(PF_LOCAL, SOCK_STREAM, 0);
+    if (client < 0) err(EX_OSERR, "socket");
+
+    struct sockaddr_un addr = {
+        .sun_family = AF_LOCAL,
+        .sun_path = "torus.sock",
+    };
+    int error = connect(client, (struct sockaddr *)&addr, sizeof(addr));
+    if (error) err(EX_IOERR, "torus.sock");
+
+    pid_t pid = fork();
+    if (pid < 0) err(EX_OSERR, "fork");
+
+    if (!pid) {
+        for (;;) {
+            char buf[4096];
+            ssize_t len = recv(client, buf, sizeof(buf), 0);
+            if (len < 0) err(EX_IOERR, "recv");
+            if (!len) return EX_OK;
+        }
+    }
+
+    clientMove(-CELL_INIT_X, -CELL_INIT_Y);
+
+    for (;;) {
+        clear(28, 11);
+        clientMove(2, 1);
+
+        white(); string("Welcome to ");
+        brite(); string("ascii.town");
+        white(); string("!");
+        enter();
+
+        white(); mvPut( 2,  4, 'o');
+        white(); mvPut( 1,  0, '-');
+        brite(); mvPut( 1,  0, 'l');
+        white(); mvPut(-1,  1, '\\');
+        brite(); mvPut( 1,  1, 'n');
+        white(); mvPut(-2, -1, '|');
+        brite(); mvPut( 0,  1, 'j');
+        white(); mvPut(-1, -1, '/');
+        brite(); mvPut(-1,  1, 'b');
+        white(); mvPut( 1, -2, '-');
+        brite(); mvPut(-1,  0, 'h');
+        white(); mvPut( 1, -1, '\\');
+        brite(); mvPut(-1, -1, 'y');
+        white(); mvPut( 2,  1, '|');
+        brite(); mvPut( 0, -1, 'k');
+        white(); mvPut( 1,  1, '/');
+        brite(); mvPut( 1, -1, 'u');
+
+        clientMove(5, 0);
+        brite(); string("q");
+        white(); string(" quit");
+        enter();
+        brite(); string("i");
+        white(); string(" insert");
+        enter();
+        brite(); string("r");
+        white(); string(" replace");
+        enter();
+        brite(); string("R");
+        white(); string(" draw");
+        enter();
+        brite(); string("~");
+        white(); string(" color");
+        enter();
+
+        clientMove(13, -6);
+        clientColor(COLOR_RED);     mvPut(0, 0, '1');
+        clientColor(COLOR_GREEN);   mvPut(0, 1, '2');
+        clientColor(COLOR_YELLOW);  mvPut(0, 1, '3');
+        clientColor(COLOR_BLUE);    mvPut(0, 1, '4');
+        clientColor(COLOR_MAGENTA); mvPut(0, 1, '5');
+        clientColor(COLOR_CYAN);    mvPut(0, 1, '6');
+        clientColor(COLOR_WHITE);   mvPut(0, 1, '7');
+        clientColor(COLOR_BRIGHT | COLOR_WHITE);   mvPut(2,  0, '&');
+        clientColor(COLOR_BRIGHT | COLOR_CYAN);    mvPut(0, -1, '^');
+        clientColor(COLOR_BRIGHT | COLOR_MAGENTA); mvPut(0, -1, '%');
+        clientColor(COLOR_BRIGHT | COLOR_BLUE);    mvPut(0, -1, '$');
+        clientColor(COLOR_BRIGHT | COLOR_YELLOW);  mvPut(0, -1, '#');
+        clientColor(COLOR_BRIGHT | COLOR_GREEN);   mvPut(0, -1, '@');
+        clientColor(COLOR_BRIGHT | COLOR_RED);     mvPut(0, -1, '!');
+
+        clientMove(-26, -3);
+
+        sleep(30);
+    }
+}