Simple mycelium simulation with signal transfer

This is a simple mycelium simulation, starting with multiple spore locations with stochastic apical growth and branching, and delayed lateral branching (lateral branch is generated at apex and then remains dormant until branching at a later time governed by a probability). Anastomosis is simulated via random node choice, and testing for distance and a hyphal fusion probability. A signal is passed through the network by associating states to the nodes, 0 goes to 1 if at least one neighbour is a 1, 1 goes to 2, and 2 goes to 1.