--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/trunk/tests/ChipmunkDemos/samples/Bounce.d	Sat Dec 04 02:02:29 2010 +0100
@@ -0,0 +1,102 @@
+
+// written in the D programming language
+
+module samples.Bounce;
+
+import chipmunkd.chipmunk;
+
+import samples.ChipmunkDemo;
+
+static cpSpace *space;
+
+static void
+update(int ticks)
+{
+	enum int steps = 3;
+	enum cpFloat dt = 1.0f/60.0f/cast(cpFloat)steps;
+	
+	for(int i=0; i<steps; i++){
+		cpSpaceStep(space, dt);
+	}
+}
+
+static void
+add_box()
+{
+	enum cpFloat size = 10.0f;
+	enum cpFloat mass = 1.0f;
+	
+	cpVect verts[] = [
+		cpv(-size,-size),
+		cpv(-size, size),
+		cpv( size, size),
+		cpv( size,-size),
+	];
+	
+	cpFloat radius = cpvlength(cpv(size, size));
+
+	cpBody *_body = cpSpaceAddBody(space, cpBodyNew(mass, cpMomentForPoly(mass, 4, verts.ptr, cpvzero)));
+	_body.p = cpv(frand()*(640 - 2*radius) - (320 - radius), frand()*(480 - 2*radius) - (240 - radius));
+	_body.v = cpvmult(cpv(2*frand() - 1, 2*frand() - 1), 200);
+	
+	cpShape *shape = cpSpaceAddShape(space, cpPolyShapeNew(_body, 4, verts.ptr, cpvzero));
+	shape.e = 1.0f; shape.u = 0.0f;
+}
+
+static cpSpace *
+init()
+{
+	cpResetShapeIdCounter();
+	
+	space = cpSpaceNew();
+	cpSpaceResizeActiveHash(space, 30.0f, 1000);
+	space.iterations = 10;
+
+	cpBody *_body;
+	cpBody *staticBody = &space.staticBody;
+	cpShape *shape;
+
+	// Create segments around the edge of the screen.
+	shape = cpSpaceAddShape(space, cpSegmentShapeNew(staticBody, cpv(-320,-240), cpv(-320,240), 0.0f));
+	shape.e = 1.0f; shape.u = 1.0f;
+	shape.layers = NOT_GRABABLE_MASK;
+
+	shape = cpSpaceAddShape(space, cpSegmentShapeNew(staticBody, cpv(320,-240), cpv(320,240), 0.0f));
+	shape.e = 1.0f; shape.u = 1.0f;
+	shape.layers = NOT_GRABABLE_MASK;
+
+	shape = cpSpaceAddShape(space, cpSegmentShapeNew(staticBody, cpv(-320,-240), cpv(320,-240), 0.0f));
+	shape.e = 1.0f; shape.u = 1.0f;
+	shape.layers = NOT_GRABABLE_MASK;
+
+	shape = cpSpaceAddShape(space, cpSegmentShapeNew(staticBody, cpv(-320,240), cpv(320,240), 0.0f));
+	shape.e = 1.0f; shape.u = 1.0f;
+	shape.layers = NOT_GRABABLE_MASK;
+	
+	for(int i=0; i<10; i++)
+		add_box();
+	
+	_body = cpSpaceAddBody(space, cpBodyNew(100.0f, 10000.0f));
+
+	shape = cpSpaceAddShape(space, cpSegmentShapeNew(_body, cpv(-75,0), cpv(75,0), 5.0f));
+	shape.e = 1.0f; shape.u = 1.0f;
+	
+	cpSpaceAddConstraint(space, cpPivotJointNew2(_body, staticBody, cpvzero, cpvzero));
+	
+	return space;
+}
+
+static void
+destroy()
+{
+	cpSpaceFreeChildren(space);
+	cpSpaceFree(space);
+}
+
+chipmunkDemo Bounce = {
+	"Bounce",
+	null,
+	&init,
+	&update,
+	&destroy,
+};