From 5d2428ee596fc95781019c5a0ce5f3c28b990575 Mon Sep 17 00:00:00 2001
From: ketmar <ketmar@ketmar.no-ip.org>
Date: Sun, 19 Jan 2014 21:19:14 +0200
Subject: [PATCH] demo: removing bodies that fell off the platform

---
 src/main.cpp | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/src/main.cpp b/src/main.cpp
index 2505f8e..082810c 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -197,6 +197,17 @@ static void update (int elapsed_ms) {
   sdl_frame_changed = 1;
   // UPDATE the physics!
   for (int i = 0; i < 10; ++i) mWorld->update(1/600.0f);
+  // remove out-of-bounds bodies
+  for (int f = mWorld->bodyCount()-1; f > 0; --f) {
+    Body *b = mWorld->getBody(f);
+    Vector2 p = b->getDerivedPosition();
+    Vector2 v = b->getDerivedVelocity();
+    //fprintf(stderr, "(%f,%f); v.X=%f; v.Y=%f\n", p.X, p.Y, v.X, v.Y);
+    if (p.Y < -8.0f && v.Y <= 0.0f) {
+      // kill it with fire!
+      delete b;
+    }
+  }
 }
 
 
-- 
2.11.4.GIT