From http://www.jwz.org/xscreensaver/xscreensaver-5.37.tar.gz

[xscreensaver] / hacks / glx / stairs.c

diff --git a/hacks/glx/stairs.c b/hacks/glx/stairs.c
index 91f40ac46a919853c077b3b7b11a33d8ab398dce..2dd78b873d40f28096c46803896756e347051bca 100644 (file)
--- a/hacks/glx/stairs.c
+++ b/hacks/glx/stairs.c
@@ -60,6 +60,7 @@ static const char sccsid[] = "@(#)stairs.c    4.07 97/11/24 xlockmore";
                                                        "*showFPS:      False   \n"
 
 # define refresh_stairs 0
+# define release_stairs 0
 # include "xlockmore.h"                /* from the xscreensaver distribution */
 #else /* !STANDALONE */
 # include "xlock.h"                    /* from the xlockmore distribution */
@@ -83,7 +84,7 @@ ENTRYPOINT ModeSpecOpt stairs_opts =
 
 #ifdef USE_MODULES
 ModStruct   stairs_description =
-{"stairs", "init_stairs", "draw_stairs", "release_stairs",
+{"stairs", "init_stairs", "draw_stairs", NULL,
  "draw_stairs", "change_stairs", NULL, &stairs_opts,
  1000, 1, 1, 1, 4, 1.0, "",
  "Shows Infinite Stairs, an Escher-like scene", 0, NULL};
@@ -354,7 +355,7 @@ stairs_handle_event (ModeInfo *mi, XEvent *event)
       XLookupString (&event->xkey, &c, 1, &keysym, 0);
       if (c == ' ' || c == '\t')
         {
-          gltrackball_reset (sp->trackball);
+          gltrackball_reset (sp->trackball, 0, 0);
           return True;
         }
     }
@@ -431,17 +432,15 @@ pinit(ModeInfo *mi)
        glMaterialfv(GL_FRONT_AND_BACK, GL_SPECULAR, front_specular);
 }
 
+static void free_stairs (ModeInfo * mi);
+
 ENTRYPOINT void
 init_stairs (ModeInfo * mi)
 {
        int         screen = MI_SCREEN(mi);
        stairsstruct *sp;
 
-       if (stairs == NULL) {
-               if ((stairs = (stairsstruct *) calloc(MI_NUM_SCREENS(mi),
-                                            sizeof (stairsstruct))) == NULL)
-                       return;
-       }
+       MI_INIT (mi, stairs, free_stairs);
        sp = &stairs[screen];
 
        sp->step = 0.0;
@@ -578,21 +577,13 @@ change_stairs (ModeInfo * mi)
 }
 #endif /* !STANDALONE */
 
-ENTRYPOINT void
-release_stairs (ModeInfo * mi)
+static void
+free_stairs (ModeInfo * mi)
 {
-       if (stairs != NULL) {
-      int i;
-      for (i = 0; i < MI_NUM_SCREENS(mi); i++) {
-        stairsstruct *sp = &stairs[i];
-        if (glIsList(sp->objects)) {
-          glDeleteLists(sp->objects, 1);
-        }
-      }
-      free(stairs);
-      stairs = NULL;
+       stairsstruct *sp = &stairs[MI_SCREEN(mi)];
+       if (glIsList(sp->objects)) {
+               glDeleteLists(sp->objects, 1);
        }
-       FreeAllGL(mi);
 }
 
 XSCREENSAVER_MODULE ("Stairs", stairs)