static AmphibiousBrain()
{
LandTree = BT.If("Land Tree", x => (!World.World.IsUnderwater(x.Position.WorldPosition3i), "on land"),
BT.Selector("Amphibious On Land",
MovementBehaviors.AmphibiousFlee,
BT.If("Return Home", MovementBehaviors.ShouldReturnHome, MovementBehaviors.AmphibiousWanderHome),
BT.If("Return to Water", x => (x.Position.y > WorldLayerManager.Obj.ClimateSim.State.SeaLevel + MaxHeightAboveSeaLevel, $"above sea-level {(x.Position.Y + WorldLayerManager.Obj.ClimateSim.State.SeaLevel).ToString("0.#")} not more than {MaxHeightAboveSeaLevel}"),
MovementBehaviors.MoveToWater),
BT.Random("Relax",
RelaxBehaviors.TryIdle,
MovementBehaviors.AmphibiousWander)));
FloatingTree = BT.If("Floating", x => (x.Floating, "floating"),
BT.Selector("Floating",
BT.If("Surface swim", x => (x.State == AnimalState.FloatingIdle && !x.Species.IsPredator, "is idling and not predator"),
// floating amphibious need time to flip back over before doing other things
Anim(AnimalState.SurfaceSwimming, true, TimeToStopFloating)),
BT.If("Flee Dive", x => (x.Alertness > DiveAlertness, $"alert {x.Alertness.ToString("0.#")} > {DiveAlertness.ToString("0.#")}"),
stopFloating,
BT.Selector("Flee or Wander",
MovementBehaviors.SwimFlee,
MovementBehaviors.SwimWander)),
MovementBehaviors.AmphibiousFlee,
BT.If("Random Dive", x => AIUtil.Chance(ChanceToDive),
stopFloating,
MovementBehaviors.SwimWander),
BT.If("Return Home", MovementBehaviors.ShouldReturnHome,
MovementBehaviors.AmphibiousWanderHome),
BT.If("Idle", x => AIUtil.Chance(ChanceToIdle),
Anim(AnimalState.FloatingIdle, true, _ => RandomUtil.Range(MinFloatIdleTime, MaxFloatIdleTime))),
MovementBehaviors.AmphibiousWander));
DivingTree = BT.Selector("Diving",
MovementBehaviors.SwimFlee,
BT.If("Return Home", MovementBehaviors.ShouldReturnHome,
startFloating,
MovementBehaviors.SwimWanderHomeSurface),
BT.If("Surface", x => (x.Alertness < DiveAlertness && RandomUtil.Chance(ChanceToSurface), $"alert {x.Alertness.ToString("0.#")} < {DiveAlertness.ToString("0.#")} and {ChanceToSurface.ToString("P0")} chance"),
startFloating,
MovementBehaviors.SwimWanderSurface),
BT.If("Wander", x => AIUtil.Chance(1 - ChanceToIdle),
MovementBehaviors.SwimWander),
Anim(AnimalState.SwimmingIdle, true, _ => RandomUtil.Range(MinIdleTime, MaxIdleTime)));
// TODO: dive for food & eat on surface (need tummy eating animation)
AmphibiousTreeRoot = BT.Selector("Amphibious",
BT.If("Animal On Land", x => (!World.World.IsUnderwater(x.Position.WorldPosition3i), "on land"),
BT.Selector("Landing",
MovementBehaviors.Flee,
FindAndEatPlants,
LandTree)),
BT.If("Animal In Water", x => (World.World.IsUnderwater(x.Position.WorldPosition3i), "in water"),
BT.Selector("Swimming",
MovementBehaviors.SwimFlee,
FloatingTree,
DivingTree)),
RelaxBehaviors.Idle);
PredatorAmphibiousTreeRoot = BT.Selector("Amphibious Predator",
BT.If("Predator On Land", x => (!World.World.IsUnderwater(x.Position.WorldPosition3i), "on land"),
BT.Selector("Landing",
MovementBehaviors.Flee,
LandPredatorBrain.FindAndAttackEnemyTree,
LandPredatorBrain.FindAndEatCorpse,
LandTree)
),
BT.If("Predator In Water", x => (World.World.IsUnderwater(x.Position.WorldPosition3i), "in water"),
BT.Selector("Swimming",
MovementBehaviors.SwimFlee,
FloatingTree,
DivingTree)
),
RelaxBehaviors.Idle);
}