From 5ef8b56c5ee746dfec0fc220711f9a87cfa0d8da Mon Sep 17 00:00:00 2001
From: Sam Hocevar <sam@hocevar.net>
Date: Fri, 5 Nov 2004 14:44:41 +0000
Subject: [PATCH]   * examples/:     + Use Space to pause demos, Esc to quit.

---
 examples/aafire.c   | 17 ++++++++++++++++-
 examples/cacaball.c | 16 ++++++++++++++--
 examples/cacamoir.c | 17 +++++++++++++++--
 examples/cacaplas.c | 23 ++++++++++++-----------
 4 files changed, 57 insertions(+), 16 deletions(-)

diff --git a/examples/aafire.c b/examples/aafire.c
index db14d56..ae8bd9c 100644
--- a/examples/aafire.c
+++ b/examples/aafire.c
@@ -40,6 +40,7 @@
 static int XSIZ, YSIZ;
 static struct caca_bitmap *caca_bitmap;
 static char *bitmap;
+static int pause = 0;
 #else
 static aa_context *context;
 static aa_renderparams *params;
@@ -193,6 +194,9 @@ drawfire (void)
   register unsigned char *p;
 #ifndef LIBCACA
   char *bitmap = aa_image (context);
+#else
+  if(pause)
+    goto paused;
 #endif
 
   height++;
@@ -216,6 +220,7 @@ drawfire (void)
   i = 0;
   firemain ();
 #ifdef LIBCACA
+paused:
   caca_draw_bitmap(0, 0, caca_get_width() - 1, caca_get_height() - 1,
                    caca_bitmap, bitmap);
   caca_refresh();
@@ -230,14 +235,24 @@ drawfire (void)
 static void
 game (void)
 {
+#ifndef LIBCACA
   int event;
+#endif
   gentable ();
 #ifdef LIBCACA
-  while (!(event = caca_get_event(CACA_EVENT_KEY_PRESS)))
+  for(;;)
 #else
   while (!(event = aa_getevent (context, 0)) || event == AA_RESIZE)
 #endif
     {
+#ifdef LIBCACA
+      switch (caca_get_event(CACA_EVENT_KEY_PRESS))
+        {
+          case CACA_EVENT_KEY_PRESS | CACA_KEY_ESCAPE: return;
+          case CACA_EVENT_KEY_PRESS | ' ': pause = !pause;
+        }
+
+#endif
       drawfire ();
     }
 }
diff --git a/examples/cacaball.c b/examples/cacaball.c
index 98014be..9f91d86 100644
--- a/examples/cacaball.c
+++ b/examples/cacaball.c
@@ -57,7 +57,7 @@ int main(int argc, char **argv)
     unsigned int x[METABALLS], y[METABALLS];
     struct caca_bitmap *caca_bitmap;
     float i = 10.0, j = 17.0, k = 11.0;
-    int p, frame = 0;
+    int p, frame = 0, pause = 0;
 
     if(caca_init())
         return 1;
@@ -86,8 +86,17 @@ int main(int argc, char **argv)
     }
 
     /* Go ! */
-    while(!caca_get_event(CACA_EVENT_KEY_PRESS))
+    for(;;)
     {
+        switch(caca_get_event(CACA_EVENT_KEY_PRESS))
+        {
+            case CACA_EVENT_KEY_PRESS | CACA_KEY_ESCAPE: goto end;
+            case CACA_EVENT_KEY_PRESS | ' ': pause = !pause;
+        }
+
+        if(pause)
+            goto paused;
+
         frame++;
 
         /* Crop the palette */
@@ -134,6 +143,7 @@ int main(int argc, char **argv)
         for(p = 0; p < METABALLS; p++)
             draw_ball(x[p], y[p]);
 
+paused:
         /* Draw our virtual buffer to screen, letting libcaca resize it */
         caca_draw_bitmap(0, 0, caca_get_width() - 1, caca_get_height() - 1,
                          caca_bitmap, pixels + (METASIZE / 2) * (1 + XSIZ));
@@ -141,6 +151,8 @@ int main(int argc, char **argv)
     }
 
     /* End, bye folks */
+end:
+    caca_free_bitmap(caca_bitmap);
     caca_end();
 
     return 0;
diff --git a/examples/cacamoir.c b/examples/cacamoir.c
index 67192c1..39df1ca 100644
--- a/examples/cacamoir.c
+++ b/examples/cacamoir.c
@@ -46,7 +46,7 @@ int main (int argc, char **argv)
 {
     int red[256], green[256], blue[256], alpha[256];
     struct caca_bitmap *bitmap;
-    int i, x, y, frame;
+    int i, x, y, frame = 0, pause = 0;
 
     if(caca_init() < 0)
         return 1;
@@ -68,8 +68,17 @@ int main (int argc, char **argv)
     bitmap = caca_create_bitmap(8, XSIZ, YSIZ, XSIZ, 0, 0, 0, 0);
 
     /* Main loop */
-    for(frame = 0; !caca_get_event(CACA_EVENT_KEY_PRESS); frame++)
+    for(;;)
     {
+        switch(caca_get_event(CACA_EVENT_KEY_PRESS))
+        {
+            case CACA_EVENT_KEY_PRESS | CACA_KEY_ESCAPE: goto end;
+            case CACA_EVENT_KEY_PRESS | ' ': pause = !pause;
+        }
+
+        if(pause)
+            goto paused;
+
         memset(screen, 0, XSIZ * YSIZ);
 
         /* Set the palette */
@@ -92,11 +101,15 @@ int main (int argc, char **argv)
         y = sin(0.09 * frame + 1.0) * 64.0 + (YSIZ / 2);
         put_disc(x, y);
 
+        frame++;
+
+paused:
         caca_draw_bitmap(0, 0, caca_get_width() - 1, caca_get_height() - 1,
                          bitmap, screen);
         caca_refresh();
     }
 
+end:
     caca_free_bitmap(bitmap);
     caca_end();
 
diff --git a/examples/cacaplas.c b/examples/cacaplas.c
index 12f9827..67dec7f 100644
--- a/examples/cacaplas.c
+++ b/examples/cacaplas.c
@@ -89,6 +89,9 @@ int main (int argc, char **argv)
             case CACA_EVENT_KEY_PRESS | ' ': pause = !pause;
         }
 
+        if(pause)
+            goto paused;
+
         for(i = 0 ; i < 256; i++)
         {
             double z = ((double)i) / 256 * 6 * M_PI;
@@ -101,18 +104,16 @@ int main (int argc, char **argv)
         /* Set the palette */
         caca_set_bitmap_palette(bitmap, red, green, blue, alpha);
 
-        if(!pause)
-        {
-            do_plasma(screen,
-                      (1.0 + sin(((double)frame) * R[0])) / 2,
-                      (1.0 + sin(((double)frame) * R[1])) / 2,
-                      (1.0 + sin(((double)frame) * R[2])) / 2,
-                      (1.0 + sin(((double)frame) * R[3])) / 2,
-                      (1.0 + sin(((double)frame) * R[4])) / 2,
-                      (1.0 + sin(((double)frame) * R[5])) / 2);
-            frame++;
-        }
+        do_plasma(screen,
+                  (1.0 + sin(((double)frame) * R[0])) / 2,
+                  (1.0 + sin(((double)frame) * R[1])) / 2,
+                  (1.0 + sin(((double)frame) * R[2])) / 2,
+                  (1.0 + sin(((double)frame) * R[3])) / 2,
+                  (1.0 + sin(((double)frame) * R[4])) / 2,
+                  (1.0 + sin(((double)frame) * R[5])) / 2);
+        frame++;
 
+paused:
         caca_draw_bitmap(0, 0, caca_get_width() - 1, caca_get_height() - 1,
                          bitmap, screen);
         caca_refresh();