public static BTStatus AmphibiousMovement(Animal agent, Vector2 generalDirection, float speed, AnimalAnimationState state, float minDistance = 2f, float maxDistance = 20f)
{
var start = agent.Position.WorldPosition3i;
if (!World.World.IsUnderwater(start))
start = RouteManager.NearestWalkableY(agent.Position.WorldPosition3i);
if (!start.IsValid)
return LandMovement(agent, generalDirection, speed, state, minDistance, maxDistance);
if (generalDirection == Vector2.zero)
generalDirection = Vector2.right.Rotate(RandomUtil.Range(0f, 360));
else
generalDirection = generalDirection.Normalized;
var target = (agent.Position + (generalDirection * RandomUtil.Range(minDistance, maxDistance)).X_Z()).WorldPosition3i;
if (World.World.IsUnderwater(target))
target.y = World.World.MaxWaterHeight[target];
else
target = RouteManager.NearestWalkableXYZ(target, 5);
// This is a low-effort search that includes water surface and should occasionally fail, just pick a semi-random node that was visited when it fails
var allowWaterSearch = new AStarSearch(RouteCacheData.NeighborsIncludeWater, start, target, 30);
if (allowWaterSearch.Status != SearchStatus.PathFound)
{
target = allowWaterSearch.Nodes.Last().Key;
allowWaterSearch.GetPath(target);
}
if (allowWaterSearch.Path.Count < 2)
return BTStatus.Failure;
else if (allowWaterSearch.Status == SearchStatus.Unpathable && allowWaterSearch.Nodes.Count < RouteRegions.MinimumRegionSize && !World.World.IsUnderwater(agent.Position.WorldPosition3i))
{
// Search region was unexpectedly small and agent is on land, might be trapped by player construction.
// Try regular land movement so region checks can apply & the agent can get unstuck (or die)
return LandMovement(agent, generalDirection, speed, state, minDistance, maxDistance);
}
var smoothed = allowWaterSearch.LineOfSightSmooth(agent.Position);
PiecewiseLinearFunction route = AIUtilities.ProjectRoute(smoothed, speed);
agent.AnimationState = state;
agent.NextTick = WorldTime.Seconds + route.EndTime;
agent.Target.SetPath(route);
return BTStatus.Success;
}
