/// <summary>
/// Updates the npc's direction and movement, if it has been sufficient time between interactions
/// </summary>
public void update()
{
npc.setDirection(directions[state]);
if (stagnant && wait < delays[state])
{
wait++;
return;
}
else if (stagnant)
{
stagnant = false;
wait = 0;
state = (state + 1) % path.Length;
npc.setDirection(directions[state]);
}
if (stuckFrames >= STILL_FRAMES)
{
npc.updateStill();
stuckFrames = 0;
}
switch (npc.getDirection())
{
case Direction.North:
if (npc.getLocation().Y > path[state])
{
if (ticks >= SKIPPED_FRAMES)
{
npc.setDestination(new Vector2(npc.getLocation().X, npc.getLocation().Y - npc.getVelocity()));
if (collisionManager.isValid(npc, false))
{
stuckFrames = 0;
npc.deriveY(-npc.getVelocity());
npc.updateMovement();
}
else
{
stuckFrames++;
}
ticks = 0;
}
else
{
ticks++;
}
}
if (npc.getLocation().Y <= path[state])
{
stagnant = true;
}
break;
case Direction.South:
if (npc.getLocation().Y < path[state])
{
if (ticks >= SKIPPED_FRAMES)
{
npc.setDestination(new Vector2(npc.getLocation().X, npc.getLocation().Y + npc.getVelocity()));
if (collisionManager.isValid(npc, false))
{
stuckFrames = 0;
npc.deriveY(npc.getVelocity());
npc.updateMovement();
}
else
{
stuckFrames++;
}
ticks = 0;
}
else
{
ticks++;
}
}
if (npc.getLocation().Y >= path[state])
{
stagnant = true;
}
break;
case Direction.West:
if (npc.getLocation().X > path[state])
{
if (ticks >= SKIPPED_FRAMES)
{
npc.setDestination(new Vector2(npc.getLocation().X - npc.getVelocity(), npc.getLocation().Y));
if (collisionManager.isValid(npc, false))
{
stuckFrames = 0;
npc.deriveX(-npc.getVelocity());
npc.updateMovement();
}
else
{
stuckFrames++;
}
ticks = 0;
}
else
{
ticks++;
}
}
if (npc.getLocation().X <= path[state])
{
stagnant = true;
}
break;
case Direction.East:
if (npc.getLocation().X < path[state])
{
if (ticks >= SKIPPED_FRAMES)
{
npc.setDestination(new Vector2(npc.getLocation().X + npc.getVelocity(), npc.getLocation().Y));
if (collisionManager.isValid(npc, false))
{
stuckFrames = 0;
npc.deriveX(npc.getVelocity());
npc.updateMovement();
}
else
{
stuckFrames++;
}
ticks = 0;
}
else
{
ticks++;
}
}
if (npc.getLocation().X >= path[state])
{
stagnant = true;
}
break;
}
}