Rather than extra splitting of the RTree that we use for collision
detection on types and direction, we limit this to checks on
layer-by-layer basis. This also allows for layer expansion by using
deque of RTrees rather than fixed index
This fixes the missing layernumbers and keeps the layers in a deque to
prevent re-allocation on expansion.
Replaces ad94b6205
Rather than extra splitting of the RTree that we use for collision
detection on types and direction, we limit this to checks on
layer-by-layer basis. This also allows for layer expansion by using
vector of RTrees rather than fixed index
Seth Hillbrand
Tomasz Włostowski