WebSVN – HelenOS – Diff – /trunk/uspace/app/tetris/screen.c

+ *
  *  @(#)screen.c    8.1 (Berkeley) 5/31/93
  */
 /** @addtogroup tetris
  * @{
  */
 /** @file
  */
 /*
 #include <async.h>
 #include "screen.h"
 #include "tetris.h"
 #include <io/console.h>
+#define STOP  (B_COLS - 3)
-static cell curscreen[B_SIZE];  /* 1 => standout (or otherwise marked) */
+static cell curscreen[B_SIZE];  /* non-zero => standout (or otherwise marked) */
 static int curscore;
-static int isset;       /* true => terminal is in game mode */
+static int isset;               /* true => terminal is in game mode */
+static const struct shape *lastshape;
 /*
  * putstr() is for unpadded strings (either as in termcap(5) or
  * simply literal strings);
+{
     while (*s)
         putchar(*(s++));
+}
-static void start_standout(void)
+static void start_standout(uint32_t color)
+{
-    console_set_rgb_color(fphone(stdout), 0xf0f0f0, 0);
+    console_set_rgb_color(fphone(stdout), 0xf0f0f0, color);
+}
 static void resume_normal(void)
+{
     console_set_rgb_color(fphone(stdout), 0, 0xf0f0f0);
+}
 /*
  * Clear the screen, forgetting the current contents in the process.
  */
-void
-scr_clear(void)
+void scr_clear(void)
+{
     resume_normal();
     console_clear(fphone(stdout));
     curscore = -1;
-    memset((char *)curscreen, 0, sizeof(curscreen));
+    memset(curscreen, 0, sizeof(curscreen));
+}
 /*
  * Set up screen
  */
-void
-scr_init(void)
+void scr_init(void)
+{
     console_cursor_visibility(fphone(stdout), 0);
     resume_normal();
     scr_clear();
+}
+}
 /*
  * Set up screen mode.
  */
-void
-scr_set(void)
+void scr_set(void)
+{
     winsize_t ws;
+    Rows = 0;
-    Rows = 0, Cols = 0;
+    Cols = 0;
     if (get_display_size(&ws) == 0) {
         Rows = ws.ws_row;
         Cols = ws.ws_col;
+    }
-    if (Rows < MINROWS || Cols < MINCOLS) {
+    if ((Rows < MINROWS) || (Cols < MINCOLS)) {
         char smallscr[55];
         snprintf(smallscr, sizeof(smallscr),
             "the screen is too small (must be at least %dx%d)",
             MINROWS, MINCOLS);
         stop(smallscr);
+    }
     isset = 1;
     scr_clear();
+}
 /*
  * End screen mode.
  */
-void
-scr_end(void)
+void scr_end(void)
+{
+    console_cursor_visibility(fphone(stdout), 1);
+}
-void
-stop(char *why)
+void stop(char *why)
+{
     if (isset)
         scr_end();
     errx(1, "aborting: %s", why);
+}
 /*
  * Update the screen.
  */
-void
-scr_update(void)
+void scr_update(void)
+{
+    cell *bp;
-    cell *bp, *sp;
+    cell *sp;
+    cell so;
-    cell so, cur_so = 0;
+    cell cur_so = 0;
+    int i;
-    int i, ccol, j;
+    int j;
-    static const struct shape *lastshape;
+    int ccol;
-    /* always leave cursor after last displayed point */
+    /* Always leave cursor after last displayed point */
     curscreen[D_LAST * B_COLS - 1] = -1;
     if (score != curscore) {
         moveto(0, 0);
         printf("Score: %d", score);
         curscore = score;
+    }
-    /* draw preview of next pattern */
+    /* Draw preview of next pattern */
-    if (showpreview && (nextshape != lastshape)) {
+    if ((showpreview) && (nextshape != lastshape)) {
         int i;
-        static int r=5, c=2;
+        static int r = 5, c = 2;
         int tr, tc, t;
         lastshape = nextshape;
-        /* clean */
+        /* Clean */
         resume_normal();
+        moveto(r - 1, c - 1);
-        moveto(r-1, c-1); putstr("          ");
+        putstr("          ");
+        moveto(r, c - 1);
-        moveto(r,   c-1); putstr("          ");
+        putstr("          ");
+        moveto(r + 1, c - 1);
-        moveto(r+1, c-1); putstr("          ");
+        putstr("          ");
+        moveto(r + 2, c - 1);
-        moveto(r+2, c-1); putstr("          ");
+        putstr("          ");
-        moveto(r-3, c-2);
+        moveto(r - 3, c - 2);
         putstr("Next shape:");
-        /* draw */
+        /* Draw */
-        start_standout();
+        start_standout(nextshape->color);
         moveto(r, 2 * c);
         putstr("  ");
         for (i = 0; i < 3; i++) {
             t = c + r * B_COLS;
             t += nextshape->off[i];
             tr = t / B_COLS;
             tc = t % B_COLS;
             moveto(tr, 2*tc);
             putstr("  ");
+        }
         resume_normal();
+    }
     bp = &board[D_FIRST * B_COLS];
     sp = &curscreen[D_FIRST * B_COLS];
     for (j = D_FIRST; j < D_LAST; j++) {
         ccol = -1;
         for (i = 0; i < B_COLS; bp++, sp++, i++) {
             if (*sp == (so = *bp))
                 continue;
             *sp = so;
             if (i != ccol) {
                 if (cur_so) {
                     resume_normal();
                     cur_so = 0;
+                }
                 moveto(RTOD(j), CTOD(i));
+            }
             if (so != cur_so) {
                 if (so)
-                    start_standout();
+                    start_standout(so);
                 else
                     resume_normal();
                 cur_so = so;
+            }
             putstr("  ");
             ccol = i + 1;
             /*
              * Look ahead a bit, to avoid extra motion if
              * we will be redrawing the cell after the next.
              * Motion probably takes four or more characters,
              * so we save even if we rewrite two cells
              * `unnecessarily'.  Skip it all, though, if
              * the next cell is a different color.
              */
-#define STOP (B_COLS - 3)
-            if (i > STOP || sp[1] != bp[1] || so != bp[1])
+            if ((i > STOP) || (sp[1] != bp[1]) || (so != bp[1]))
                 continue;
             if (sp[2] != bp[2])
                 sp[1] = -1;
-            else if (i < STOP && so == bp[2] && sp[3] != bp[3]) {
+            else if ((i < STOP) && (so == bp[2]) && (sp[3] != bp[3])) {
                 sp[2] = -1;
                 sp[1] = -1;
+            }
+        }
+    }
     if (cur_so)
         resume_normal();
     fflush(stdout);
+}
 /*
- * Write a message (set!=0), or clear the same message (set==0).
+ * Write a message (set != 0), or clear the same message (set == 0).
  * (We need its length in case we have to overwrite with blanks.)
  */
-void
-scr_msg(char *s, int set)
+void scr_msg(char *s, int set)
+{
     int l = str_size(s);
     moveto(Rows - 2, ((Cols - l) >> 1) - 1);
     if (set)
         putstr(s);
     else
         while (--l >= 0)
             (void) putchar(' ');
+}
 /** @}
  */

Subversion Repositories HelenOS

(root)/trunk/uspace/app/tetris/screen.c – Rev 4488 → 4515