From b787cdc7885d8a75f5aea5aa8e25124b72325f99 Mon Sep 17 00:00:00 2001
From: Laurent Mazet <mazet@softndesign.org>
Date: Fri, 24 May 2024 23:42:14 +0200
Subject: [PATCH] move cursor

---
 battleships.c | 69 +++++++++++++++++++++++++++++++++++++++++++++------
 board.c       |  7 ++++--
 board.h       |  2 +-
 3 files changed, 68 insertions(+), 10 deletions(-)

diff --git a/battleships.c b/battleships.c
index a7ff248..7e1f010 100644
--- a/battleships.c
+++ b/battleships.c
@@ -10,6 +10,8 @@
 #include "board.h"
 #include "debug.h"
 
+#define KEY_ESC 0x1b
+
 /* static variables */
 char *progname = NULL;
 char *version = "0.1";
@@ -65,23 +67,76 @@ int main (int argc, char *argv[])
     VERBOSE (DEBUG, fprintf (stdout, "debug mode\n"));
 
     initscr ();
-    cbreak ();
-    noecho ();
-    curs_set (0);
+
+    cbreak ();               /* direct input (no newline required)... */
+    noecho ();               /* ... without echoing */
+    nodelay (stdscr, TRUE);  /* don't wait for input... */
+    halfdelay (10);          /* ...well, no more than a second, anyway */
+    keypad (stdscr, TRUE);   /* enable cursor keys */
+    scrollok (stdscr, TRUE); /* enable scrolling in main window */
+
+    curs_set (2);
     start_color ();
 
-    board_t *board = initboard (20, 10);
+    int xsize = 20;
+    int ysize = 10;
+    int xoffset = 3;
+    int yoffset = 3;
+
+    board_t *board = initboard (xsize, ysize);
     board->tab[3] = 'X';
     board->tab[4] = 'O';
     board->tab[5] = 'S';
+
+    int mode = 0;
+    displayboard (board, xoffset, yoffset, mode);
+
+    int x = (xsize + 1) / 2 - 1;
+    int y = (ysize + 1) / 2 - 1;
+
     int stop = 0;
     while (!stop) {
-        displayboard (board, 4, 4);
-        int c = getch ();
-        switch (c) {
+        move (y + yoffset, x + xoffset);
+        switch (getch ()) {
+        case KEY_ESC:
+#ifndef __PDCURSES__
+            if (getch () != KEY_ESC) {
+                break;
+            }
+#endif /* __PDCURSES__ */
+        case ':':
+            break;
+        case KEY_UP:
+        case 'i':
+            if (y > 0) {
+                y--;
+            }
+            break;
+        case KEY_LEFT:
+        case 'j':
+            if (x > 0) {
+                x--;
+            }
+            break;
+        case KEY_DOWN:
+        case 'k':
+            if (y < ysize - 1) {
+                y++;
+            }
+            break;
+        case KEY_RIGHT:
+        case 'l':
+            if (x < xsize - 1) {
+                x++;
+            }
+            break;
         case 'q':
             stop = 1;
             break;
+        case 't':
+            mode ^= 1;
+            displayboard (board, xoffset, yoffset, mode);
+            break;
         case ERR:
             break;
         }
diff --git a/board.c b/board.c
index e0002f3..6d91d0d 100644
--- a/board.c
+++ b/board.c
@@ -39,7 +39,7 @@ void setcolor (color_t color)
     attrset (COLOR_PAIR (color));
 }
 
-void displayboard (board_t *board, int xoffset, int yoffset)
+void displayboard (board_t *board, int xoffset, int yoffset, int mode)
 {
     int x, y;
 
@@ -77,9 +77,12 @@ void displayboard (board_t *board, int xoffset, int yoffset)
                     setcolor (yellow);
                     break;
                 }
+                if (!mode) {
+                    c = ' ';
+                }
             }
 
-            mvaddch (yoffset + 1 + y, xoffset + 1 + x, c);
+            mvaddch (yoffset + y, xoffset + x, c);
             setcolor (white);
         }
     }
diff --git a/board.h b/board.h
index 18a1352..7c83702 100644
--- a/board.h
+++ b/board.h
@@ -9,6 +9,6 @@ typedef struct {
 
 board_t *initboard (int xsize, int ysize);
 
-void displayboard (board_t *board, int xoffset, int yoffset);
+void displayboard (board_t *board, int xoffset, int yoffset, int mode);
 
 #endif /* __BOARD_H__ */
-- 
2.30.2