todo.txt

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- When a node is added, broadcast. 
- Distance = min hops, direction = node which gave min hops
- If keep alive message fails, remove
- When a node is removed, broadcast
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- Node connection failure and update
- Ping to check if within range
- Keep packet until timeout, if no nodes are in range
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- two.js setup
- road network
- relay stationary cars
- Disable cars on the fly
- Disable cars automatically when out of range
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- gui.js
	- main loop
		- logic step
		- graphics update
	- mouse click
	- sample scenes
	- check boxes
	- inspector
- graphics.js
	- drawBackground()
	- drawCars(positions)
		- draw rects at positions
	- drawGraph(G)
		- circles at nodes and lines at edges
	- drawPackets(packets)
		- larger circle as packet
- logic.js
	- step
		- positions = updateCarPositions(positions)
			- ???
		- G = updateGraph(positions)
			- if physical distance < radius then adjacent
		- R = updateRoutingInformation(G,G')
			- changes = G' - G 
			- for each change in changes
				- broadcastChange(R,change)
			- G' = G
		- packets = updatePackets(R,packets)
			- update sleep
			- getBestAdjacentNode(R,packet)
			- moveToAdjacent(R,packet,newNode)
	
	- sendPacket(R,src,dest)	
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- Packet
	- id, src, dest, lifeLeft, sleep
- RoutingInformation
	- Adjacent Nodes: [1,2,3..]
	- Reachable from adjacent: {adjNode:{targetNode:hops}}