private static Vector2D?FindClosestPosition(Vector2D position)
{
var physicsSpace = ServerWorldService.GetPhysicsSpace();
var collisionGroup = CollisionGroup.Default;
if (IsValidPosition(
// round position
position.ToVector2Ushort().ToVector2D()))
{
// can teleport right there
return(position);
}
// check nearby tiles
var tile = ServerWorldService.GetTile(position.ToVector2Ushort());
foreach (var neighborTile in tile.EightNeighborTiles)
{
if (!neighborTile.IsValidTile)
{
continue;
}
var neighborTilePosition = neighborTile.Position.ToVector2D();
if (IsValidPosition(neighborTilePosition))
{
return(neighborTilePosition);
}
}
return(null);
// Local function for checking if the position is valid.
bool IsValidPosition(Vector2D pos)
{
using var objectsNearby = physicsSpace.TestRectangle(
// include some padding, otherwise the check will include border-objects
position: pos + (0.01, 0.01),
size: (0.98, 0.98),
collisionGroup: collisionGroup,
sendDebugEvent: false);
if (objectsNearby.Count > 0)
{
return(false);
}
var posTile = Server.World.GetTile(pos.ToVector2Ushort());
return(ServerCharacterSpawnHelper.IsValidSpawnTile(posTile,
checkNeighborTiles: false));
}
}
private static Vector2D FindClosestPosition(Vector2D position)
{
var physicsSpace = ServerWorldService.GetPhysicsSpace();
var collisionGroup = CollisionGroup.GetDefault();
if (IsValidPosition(
// round position
position.ToVector2Ushort().ToVector2D()))
{
// can teleport right there
return(position);
}
// check nearby tiles
var tile = ServerWorldService.GetTile(position.ToVector2Ushort());
foreach (var neighborTile in tile.EightNeighborTiles)
{
if (!neighborTile.IsValidTile)
{
continue;
}
var neighborTilePosition = neighborTile.Position.ToVector2D();
if (IsValidPosition(neighborTilePosition))
{
return(neighborTilePosition);
}
}
throw new Exception("No empty position available nearby.");
// Local function for checking if the position is valid.
bool IsValidPosition(Vector2D pos)
{
using (var objectsNearby = physicsSpace.TestRectangle(
// include some padding, otherwise the check will include border-objects
position: pos + (0.01, 0.01),
size: (0.98, 0.98),
collisionGroup: collisionGroup,
sendDebugEvent: false))
{
return(objectsNearby.Count == 0);
}
}
}
public static bool IsPositionValidForCharacterSpawn(
Vector2D position,
bool isPlayer)
{
if (!IsValidSpawnPosition(position))
{
return(false);
}
var physicsSpace = ServerWorldService.GetPhysicsSpace();
foreach (var t in physicsSpace.TestCircle(position,
SpawnNoPlayerBuiltStructuresRadius,
CollisionGroups.Default,
sendDebugEvent: false).EnumerateAndDispose())
{
if (t.PhysicsBody.AssociatedWorldObject?.ProtoWorldObject is IProtoObjectStructure)
{
// some structure nearby
return(false);
}
}
if (isPlayer)
{
// check if mobs nearby
foreach (var t in physicsSpace.TestCircle(position,
SpawnPlayerNoMobsRadius,
CollisionGroups.Default,
sendDebugEvent: false).EnumerateAndDispose())
{
if (t.PhysicsBody.AssociatedWorldObject is ICharacter otherCharacter &&
otherCharacter.IsNpc)
{
// mobs nearby
return(false);
}
}
}
else // a mob
{
// check if players nearby
foreach (var t in physicsSpace.TestCircle(position,
SpawnMobNoPlayersRadius,
CollisionGroups.Default,
sendDebugEvent: false).EnumerateAndDispose())
{
if (t.PhysicsBody.AssociatedWorldObject is ICharacter otherCharacter &&
!otherCharacter.IsNpc)
{
// players nearby
return(false);
}
}
}
// check if any physics object nearby
using (var objectsNearby = physicsSpace.TestCircle(position,
SpawnNoPhysicsObjectsRadius,
CollisionGroups.Default,
sendDebugEvent: false))
{
if (objectsNearby.Count > 0)
{
// some physical object nearby
return(false);
}
}
return(true);
}
public static bool IsPositionValidForCharacterSpawn(
Vector2D position,
bool isPlayer)
{
var tile = ServerWorldService.GetTile(position.ToVector2Ushort());
if (!IsValidTile(tile) ||
tile.EightNeighborTiles.Any(t => !IsValidTile(t)))
{
// cliff/slope or water nearby
return(false);
}
var physicsSpace = ServerWorldService.GetPhysicsSpace();
using (var objectsNearby = physicsSpace.TestCircle(
position,
SpawnNoPlayerBuiltStructuresRadius,
CollisionGroups.Default,
sendDebugEvent: false))
{
if (objectsNearby.Any(
t => t.PhysicsBody.AssociatedWorldObject?.ProtoWorldObject is IProtoObjectStructure))
{
// some structure nearby
return(false);
}
}
if (isPlayer)
{
// check if mobs nearby
using (var mobsNearby = physicsSpace.TestCircle(
position,
SpawnPlayerNoMobsRadius,
CollisionGroups.Default,
sendDebugEvent: false))
{
if (mobsNearby.Any(
t => t.PhysicsBody.AssociatedWorldObject is ICharacter otherCharacter &&
otherCharacter.IsNpc))
{
// mobs nearby
return(false);
}
}
}
else
{
// check if mobs nearby
using (var mobsNearby = physicsSpace.TestCircle(
position,
SpawnMobNoPlayersRadius,
CollisionGroups.Default,
sendDebugEvent: false))
{
if (mobsNearby.Any(
t => t.PhysicsBody.AssociatedWorldObject is ICharacter otherCharacter &&
!otherCharacter.IsNpc))
{
// players nearby
return(false);
}
}
}
// check if any physics object nearby
using (var objectsNearby = physicsSpace.TestCircle(
position,
SpawnNoPhysicsObjectsRadius,
CollisionGroups.Default,
sendDebugEvent: false))
{
if (objectsNearby.Count > 0)
{
// some physical object nearby
return(false);
}
}
return(true);
}