// If the animal is stuck somewhere it shouldn't be help it escape or die if its very far from walkable terrain
public static BTStatus LandAnimalUnStuckOrDie(Animal agent, float speed, AnimalAnimationState state)
{
if (!RouteManager.Ready)
{
// don't kill everything if pathfinding is resetting
agent.LockNextTick(WorldTime.Seconds + 20f);
return BTStatus.Success;
}
const int MaxUnStuckDistance = 20;
var nearestValid = RouteManager.NearestWalkableXYZ(agent.Position.Round, MaxUnStuckDistance);
if (nearestValid == agent.Position.WorldPosition3i)
return BTStatus.Failure;
if (!nearestValid.IsValid)
{
// cheating failed? time to die!
agent.Kill(DeathType.Construction);
return BTStatus.Success;
}
// ignore terrain, path directly to a valid area
agent.Target.Set(agent.Position, (Vector3)nearestValid, speed);
agent.LockNextTick(agent.Target.TargetTime);
agent.AnimationState = state;
return BTStatus.Success;
}
public static BTStatus RouteToWater(Animal agent, float speed, AnimalAnimationState state)
{
var start = agent.Position.WorldPosition3i;
// only works for surface start points
if (World.World.IsUnderwater(start) || start.y != World.World.MaxYCache[start] || RouteManager.RouteToSeaMap == null)
return BTStatus.Failure;
if (start.IsValid)
{
agent.AnimationState = state;
// get a destination a decent
var current = start;
for (int i = 0; i < 10; i++)
{
var next = RouteManager.RouteToSeaMap[current];
if (next == current)
break;
current = next;
if (WorldPosition3i.Distance(current, start) > 10)
break;
}
var target = ((Vector2)(WorldPosition3i.GetDelta(current, start)).XZ).Rotate(RandomUtil.Range(-20, 20));
return AmphibiousMovement(agent, target, speed, state, 10, 20);
}
return BTStatus.Failure;
}
public static BTStatus Swim(Animal agent, Vector2 direction, float speed, AnimalAnimationState state, bool surface, int tries = 10)
{
var targetPos = AIUtilities.FindTargetSwimPosition(agent.Position, 5.0f, 20.0f, direction, 90, 360, tries, surface);
if (targetPos == agent.Position)
return BTStatus.Failure;
agent.AnimationState = state;
agent.Target.Set(agent.Position, targetPos, speed);
agent.NextTick = agent.Target.TargetTime;
return BTStatus.Success;
}
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;
}
public static BTStatus LandMovement(Animal agent, Vector2 direction, float speed, AnimalAnimationState state, float minDistance = 2f, float maxDistance = 20f, float minDirectionOffsetDegrees = 0, float maxDirectionOffsetDegrees = 360, int tryCount = 10)
{
var search = AIUtilities.FindRoute(agent.Position, 2f, 20f, direction);
if (search != null)
{
var smoothed = search.LineOfSightSmooth(agent.Position);
PiecewiseLinearFunction route = AIUtilities.ProjectRoute(smoothed, speed);
agent.NextTick = WorldTime.Seconds + route.EndTime;
agent.Target.SetPath(route);
agent.AnimationState = state;
return BTStatus.Success;
}
else
return LandAnimalUnStuckOrDie(agent, speed, state);
}