--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/trunk/tests/ChipmunkDemos/samples/Plink.d	Sat Dec 04 02:02:29 2010 +0100
@@ -0,0 +1,112 @@
+
+// written in the D programming language
+
+module samples.Plink;
+
+import chipmunkd.chipmunk;
+
+import samples.ChipmunkDemo;
+
+import std.math;
+
+static cpSpace *space;
+
+// Iterate over all of the bodies and reset the ones that have fallen offscreen.
+static void
+eachBody(cpBody *_body, void *unused)
+{
+	if(_body.p.y < -260 || cpfabs(_body.p.x) > 340){
+		cpFloat x = frand()*640 - 320;
+		_body.p = cpv(x, 260);
+	}
+}
+
+static void
+update(int ticks)
+{
+	int steps = 1;
+	cpFloat dt = 1.0f/60.0f/cast(cpFloat)steps;
+	
+	for(int i=0; i<steps; i++){
+		cpSpaceStep(space, dt);
+		cpSpaceEachBody(space, &eachBody, null);
+	}
+}
+
+enum NUM_VERTS = 5;
+
+static cpSpace *
+init()
+{
+	cpResetShapeIdCounter();
+	
+	space = cpSpaceNew();
+	space.iterations = 5;
+	space.gravity = cpv(0, -100);
+	
+	cpSpaceResizeStaticHash(space, 40.0f, 999);
+	cpSpaceResizeActiveHash(space, 30.0f, 2999);
+	
+	cpBody *_body;
+	cpBody *staticBody = &space.staticBody;
+	cpShape *shape;
+	
+	// Create vertexes for a pentagon shape.
+	cpVect verts[NUM_VERTS];
+	for(int i=0; i<NUM_VERTS; i++){
+		cpFloat angle = -2.0f*PI*i/(cast(cpFloat) NUM_VERTS);
+		verts[i] = cpv(10.0f*cos(angle), 10.0f*sin(angle));
+	}
+	
+	// Vertexes for a triangle shape.
+	enum cpVect tris[] = [
+		cpv(-15,-15),
+		cpv(  0, 10),
+		cpv( 15,-15),
+	];
+
+	int foo;
+	
+	// Create the static triangles.
+	foreach(i; 0..9){
+		foreach(j; 0..6){
+			cpFloat stagger = (j%2)*40;
+			cpVect offset;
+			offset.x = (i*80) - 320 + stagger;
+			offset.y = (j*70) - 240;
+			//BUG: crazy fucking dmd codegen bug when optimizing (2.050)
+			foo = i;
+			
+			shape = cpSpaceAddShape(space, cpPolyShapeNew(staticBody, 3, tris.ptr, offset));
+			shape.e = 1.0f; shape.u = 1.0f;
+			shape.layers = NOT_GRABABLE_MASK;
+		}
+	}
+	
+	// Add lots of pentagons.
+	for(int i=0; i<300; i++){
+		_body = cpSpaceAddBody(space, cpBodyNew(1.0f, cpMomentForPoly(1.0f, NUM_VERTS, verts.ptr, cpvzero)));
+		cpFloat x = frand()*640 - 320;
+		_body.p = cpv(x, 350);
+		
+		shape = cpSpaceAddShape(space, cpPolyShapeNew(_body, NUM_VERTS, verts.ptr, cpvzero));
+		shape.e = 0.0f; shape.u = 0.4f;
+	}
+	
+	return space;
+}
+
+static void
+destroy()
+{
+	cpSpaceFreeChildren(space);
+	cpSpaceFree(space);
+}
+
+chipmunkDemo Plink = {
+	"Plink",
+	null,
+	&init,
+	&update,
+	&destroy,
+};