The required extensions are: 1. Lights: Represented as objects that "know" their colour, position, direction and intensity (0-11). We are mainly focussed on down-lighting, Lights can be grouped to work as synchronised sets. Lights may be solid colours, combinations of colours, patterns/shapes (gobo stencils) or lasers. Prompts: How will you represent the "spread" of the light - the cone it shines through? How will you group lights and provide a mechanism to drive them as a collection? What types of lights will you include? 2. Smoke machine: There should be one or more smoke machine objects, which should include position, direction, intensity (0-11). Smoke should diffuse using a choice of Moore or Van-Neumann neighbourhoods