--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/trunk/tests/helloworld.d	Fri Dec 03 00:41:30 2010 +0100
@@ -0,0 +1,76 @@
+import chipmunkd.chipmunk;
+
+import std.stdio;
+
+void main()
+{
+	// this allocated internal memory of the engine and must be called befor any collision can occur otherwise things get ugly
+	cpInitChipmunk();
+	
+	// Create a space, a space is a simulation world. It simulates the motions of rigid bodies,
+	// handles collisions between them, and simulates the joints between them.
+	cpSpace* space = cpSpaceNew();
+	
+	
+	// Lets set some parameters of the space:
+	// More iterations make the simulation more accurate but slower
+	space.iterations = 10;
+	// These parameters tune the efficiency of the collision detection.
+	// For more info: http://code.google.com/p/chipmunk-physics/wiki/cpSpace
+	cpSpaceResizeStaticHash(space, 30.0f, 1000);
+	cpSpaceResizeActiveHash(space, 30.0f, 1000);
+	// Give it some gravity
+	space.gravity = cpv(0, -1);
+	
+	
+	// Create A ground segment along the bottom of the screen
+	// By attaching it to &space.staticBody instead of a body, we make it a static shape.
+	cpShape *ground = cpSegmentShapeNew(&space.staticBody, cpv(-320,-240), cpv(320,-240), 0.0f);
+	// Set some parameters of the shape.
+	// For more info: http://code.google.com/p/chipmunk-physics/wiki/cpShape
+	ground.e = 1.0f; ground.u = 1.0f;
+	// Add the shape to the space as a static shape
+	// If a shape never changes position, add it as static so Chipmunk knows it only needs to
+	// calculate collision information for it once when it is added.
+	// Do not change the postion of a static shape after adding it.
+	cpSpaceAddShape(space, ground);
+	
+	// Add a moving circle object.
+	cpFloat radius = 15.0f;
+	cpFloat mass = 10.0f;
+	// This time we need to give a mass and moment of inertia when creating the circle.
+	cpBody *ballBody = cpBodyNew(mass, cpMomentForCircle(mass, 0.0f, radius, cpvzero));
+	// Set some parameters of the body:
+	// For more info: http://code.google.com/p/chipmunk-physics/wiki/cpBody
+	ballBody.p = cpv(0, -100 + radius+50);
+	ballBody.v = cpv(0, -20);
+	// Add the body to the space so it will be simulated and move around.
+	cpSpaceAddBody(space, ballBody);
+	
+	
+	// Add a circle shape for the ball.
+	// Shapes are always defined relative to the center of gravity of the body they are attached to.
+	// When the body moves or rotates, the shape will move with it.
+	// Additionally, all of the cpSpaceAdd*() functions return the thing they added so you can create and add in one go.
+	cpShape *ballShape = cpSpaceAddShape(space, cpCircleShapeNew(ballBody, radius, cpvzero));
+	ballShape.e = 0.0f; ballShape.u = 0.9f;
+	
+	bool finished=false;
+	while(!finished)
+	{
+		// Chipmunk allows you to use a different timestep each frame, but it works much better when you use a fixed timestep.
+		// An excellent article on why fixed timesteps for game logic can be found here: http://gafferongames.com/game-physics/fix-your-timestep/
+		cpSpaceStep(space, 1.0f/60.0f);
+		
+		// print position
+		writefln("pos %s,%s",ballBody.p.x,ballBody.p.y);
+		
+		// stop simulation once the ball touches the ground
+		finished = (ballBody.p.y < -225);
+	}
+	
+	// free our objects
+	cpSpaceFreeChildren(space);
+	// free the space
+	cpSpaceFree(space);
+}
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