Make ball bounceHEADmaster

1 files changed, 19 insertions, 7 deletions

diff --git a/daemon.c b/daemon.c
index 885c74a..45c7380 100644
--- a/daemon.c
+++ b/daemon.c
@@ -1,11 +1,12 @@
 /* Build with
-   gcc `pkg-config --cflags --libs gio-2.0` daemon.c -o daemon
+   gcc `pkg-config --cflags --libs gio-2.0` -lm daemon.c -o daemon
 */
 
 #include <gio/gio.h>
 #include <string.h>
 #include <stdint.h>
 #include <arpa/inet.h>
+#include <math.h>
 
 /************************************************************************
  *  conversion of raw image data to uncompressed png data: uris         *
@@ -743,6 +744,7 @@ demo (GOutputStream *out)
   GOutputStream *cout;
   char *header;
   int i;
+  int x, y, dx;
   int ball, save;
 
   header =
@@ -776,16 +778,26 @@ demo (GOutputStream *out)
   send_text(cout, "welcome to ajax broadway", 403, 403);
 
   i = 0;
+  x = 0; dx = 9;
   while (1)
     {
       send_select_surface(cout, 0);
-      send_rgb (cout, 0xff0000 + i * 32);
-      send_rect (cout, i*10, i*10, 15, 15);
-      send_rgba (cout, 0x80ff0000 + i * 32);
-      send_rect (cout, i*10 + 50, i*10, 15, 15);
 
-      send_blend_alpha (cout, ball, 0, 0, 50, 50,
-			200 + i * 20, 200 - i * 30, 70);
+      send_rgb (cout, 0x00000);
+      send_rect (cout, x, y, ball_w, ball_h);
+
+      x += dx;
+      if (x > 700) {
+	x = 700 - (x-700);
+	dx = -dx;
+      }
+      if (x < 0) {
+	x = -x;
+	dx = -dx;
+      }
+      y = 300 - fabs(sin(i * M_PI * 2 / 60)) * 300;
+      send_blend (cout, ball, 0, 0, ball_w, ball_h,
+		  x, y);
 
       i ++;