private static Vector2Ushort?TryFindZoneSpawnPosition(
ICharacter character,
IServerZone spawnZone,
Random random,
bool isRespawn)
{
var characterDeathPosition = Vector2Ushort.Zero;
if (isRespawn && character.ProtoCharacter is PlayerCharacter)
{
var privateState = PlayerCharacter.GetPrivateState(character);
if (!privateState.LastDeathTime.HasValue)
{
return(null);
}
characterDeathPosition = privateState.LastDeathPosition;
}
var restrictedZone = ZoneSpecialConstructionRestricted.Instance.ServerZoneInstance;
for (var attempt = 0; attempt < SpawnInZoneAttempts; attempt++)
{
var randomPosition = spawnZone.GetRandomPosition(random);
if (isRespawn)
{
var sqrDistance = randomPosition.TileSqrDistanceTo(characterDeathPosition);
if (sqrDistance > MaxDistanceWhenRespawnSqr ||
sqrDistance < MinDistanceWhenRespawnSqr)
{
// too close or too far for the respawn
continue;
}
}
if (restrictedZone.IsContainsPosition(randomPosition))
{
// the position is inside the restricted zone
continue;
}
if (!LandClaimSystem.SharedIsPositionInsideOwnedOrFreeArea(randomPosition,
character,
requireFactionPermission: false))
{
// the land is claimed by another player
continue;
}
if (ServerCharacterSpawnHelper.IsPositionValidForCharacterSpawn(randomPosition.ToVector2D(),
isPlayer: true))
{
// valid position found
return(randomPosition);
}
}
return(null);
}
private static Vector2Ushort?TryFindZoneSpawnPosition(
ICharacter character,
IServerZone spawnZone,
Random random,
bool isRespawn)
{
var characterDeathPosition = Vector2Ushort.Zero;
if (isRespawn && character.ProtoCharacter is PlayerCharacter)
{
characterDeathPosition = PlayerCharacter.GetPrivateState(character)
.LastDeathPosition;
}
for (var attempt = 0; attempt < SpawnInZoneAttempts; attempt++)
{
var randomPosition = spawnZone.GetRandomPosition(random);
if (isRespawn)
{
var sqrDistance = randomPosition.TileSqrDistanceTo(characterDeathPosition);
if (sqrDistance > MaxDistanceWhenRespawnSqr ||
sqrDistance < MinDistanceWhenRespawnSqr)
{
// too close or too far for the respawn
continue;
}
}
if (LandClaimSystem.SharedGetAreaAtPosition(randomPosition) is ILogicObject area &&
!LandClaimSystem.ServerIsOwnedArea(area, character))
{
// the land is claimed by another player
continue;
}
if (ServerCharacterSpawnHelper.IsPositionValidForCharacterSpawn(randomPosition.ToVector2D(),
isPlayer: true))
{
// valid position found
return(randomPosition);
}
}
return(null);
}
public static void ServerSpawnBossMinionsOnDeath(
Vector2Ushort epicenterPosition,
double bossDifficultyCoef,
IProtoCharacter minionProto,
int minionsDefaultCount,
double minionsRadius)
{
var countToSpawnRemains = minionsDefaultCount;
// apply difficulty coefficient
countToSpawnRemains = (int)Math.Ceiling(countToSpawnRemains * bossDifficultyCoef);
if (countToSpawnRemains < 2)
{
countToSpawnRemains = 2;
}
var attemptsRemains = 3000;
while (countToSpawnRemains > 0)
{
attemptsRemains--;
if (attemptsRemains <= 0)
{
// attempts exceeded
return;
}
// calculate random distance from the explosion epicenter
var distance = RandomHelper.Range(2, minionsRadius);
// ensure we spawn more objects closer to the epicenter
var spawnProbability = 1 - (distance / minionsRadius);
spawnProbability = Math.Pow(spawnProbability, 1.25);
if (!RandomHelper.RollWithProbability(spawnProbability))
{
// random skip
continue;
}
var angle = RandomHelper.NextDouble() * MathConstants.DoublePI;
var spawnPosition = new Vector2Ushort(
(ushort)(epicenterPosition.X + distance * Math.Cos(angle)),
(ushort)(epicenterPosition.Y + distance * Math.Sin(angle)));
if (ServerTrySpawnMinion(spawnPosition))
{
// spawned successfully!
countToSpawnRemains--;
}
}
bool ServerTrySpawnMinion(Vector2Ushort spawnPosition)
{
var worldPosition = spawnPosition.ToVector2D();
if (!ServerCharacterSpawnHelper.IsPositionValidForCharacterSpawn(worldPosition,
isPlayer: false))
{
// position is not valid for spawning
return(false);
}
var spawnedCharacter = ServerCharacters.SpawnCharacter(minionProto, worldPosition);
return(spawnedCharacter is not null);
}
}