Creating userdata

So far we've been using global data to store information about our agents. As we're going to create decision structures that require information about our agents, we'll create a local userdata table variable that contains our specific agent data as well as the agent controller in order to manage animation handling:

local userData =
{
    alive, -- terminal flag
    agent, -- Sandbox agent
    ammo, -- current ammo
    controller, -- Agent animation controller
    enemy, -- current enemy, can be nil
    health, -- current health
    maxHealth -- max Health
};

Moving forward, we will encapsulate more and more data as a means of isolating our systems from global variables. A userData table is perfect for storing any arbitrary piece of agent data that the agent doesn't already possess and provides a common storage area for data structures to manipulate agent data. So far, the listed data members are some common pieces of information we'll be storing...