Game Development Reference
In-Depth Information
3. Initialize the machine by calling
Reset()
.
4. Update the machine by calling
UpdateMachine()
.
The
MAX_STATES
variable holds the maximum number of states that this machine can hold.
private int MAX_STATES = 20;
The
m_NumberStates
variable holds the number of states in this state machine.
private int m_NumberStates = 0;
The
m_States
array holds the tank states that make up the finite state machine.
protected StateTank[] m_States = new StateTank[MAX_STATES];
The
m_CurrentState
variable holds a reference to the currently executing tank state.
protected StateTank m_CurrentState = null;
The
m_DefaultState
variable holds a reference to the default state that the finite state
machine starts in.
protected StateTank m_DefaultState = null;
The
m_GoalState
is the state that the finite state machine is going to transition to.
protected StateTank m_GoalState = null;
The
m_GoalID
is the enumeration that identifies the type of tank state to transition to either the
process command state or the patrol/attack state.
protected FSM_StatesTank m_GoalID;
The
Reset()
function initializes the finite state machine and does the following (see Listing 8-39):
If there is a current state being executed, it exits that state by calling
Exit()
on the state object.
1.
2.
It sets the current state to the default state of the machine.
3.
For all the states in the machine, it initializes them by calling each state's
Init()
function.
If there is a current state, it then “enters” that state by calling
Enter()
on
that state.
4.
