gistfile1.lua

local box = dynamo.createEntity(dynamo.world, nil, 1, dynamo.world.momentForBox(1, vec2(200,100)), {
	 dynamo.createBoxShape(vec2(200,100))
})
box.location = vec2(110, 700)

local circle = dynamo.createEntity(dynamo.world, nil, 1, dynamo.world.momentForCircle(1, 0, 70, vec2_zero), {
	dynamo.createCircleShape(vec2(0, 0), 70)
})
circle.elasticity = 1
circle.location = vec2(200, 500)

circle.collisionHandler = function(entity, world, collisionInfo)
	if collisionInfo.b == box then
		local pt = collisionInfo.contactPoints.points[0].point
		print("box and circle collided", pt.x, pt.y)
	else
		print("circle collided")
	end
end

circle:createPinJoint(box, vec2(0, 20), vec2(-20,-20))

dynamo.world:addEntity(box)
dynamo.world:addEntity(circle)

dynamo.world.staticEntity:addShape(dynamo.createSegmentShape(vec2(0,200), vec2(400, 0)))
dynamo.world.staticEntity:addShape(dynamo.createSegmentShape(vec2(400,0), vec2(800, 200)))
dynamo.world.staticEntity:addShape(dynamo.createSegmentShape(vec2(0,0), vec2(0, 980)))
dynamo.world.staticEntity:addShape(dynamo.createSegmentShape(vec2(0,0), vec2(640, 0)))
dynamo.world.staticEntity:addShape(dynamo.createSegmentShape(vec2(0,980), vec2(640, 980)))
dynamo.world.staticEntity:addShape(dynamo.createSegmentShape(vec2(640,0), vec2(640, 980)))

dynamo.renderer:pushRenderable(
	dynamo.renderable(function(renderer, renderable, timeSinceLastFrame, interpolation)
		dynamo.world:draw(false)
	end)
)