private void ParseGraphicalEffects(Internal.CommunicationStream message)
{
var initialPosition = message.ReadPosition();
int modifier = message.ReadUnsignedByte();
Appearances.AppearanceInstance effect = null;
byte effectId = 0;
var fromPosition = initialPosition;
ushort unclampedOffset = 0;
while (modifier != 0)
{
if (modifier == 1)
{
unclampedOffset = message.ReadUnsignedShort();
int offset = unclampedOffset % 256;
fromPosition.x += offset % Constants.MapSizeX;
fromPosition.y += offset / Constants.MapSizeX;
}
// the effect is far away from the initial position
while (fromPosition.x - initialPosition.x >= Constants.MapSizeX)
{
fromPosition.x -= Constants.MapSizeX;
fromPosition.y++;
}
if ((unclampedOffset >= 1024 && modifier == 1) || (modifier & 3) == 0)
{
effectId = message.ReadUnsignedByte();
int deltaX = message.ReadSignedByte();
int deltaY = message.ReadSignedByte();
var toPosition = new Vector3Int(fromPosition.x + deltaX, fromPosition.y + deltaY, fromPosition.z);
effect = AppearanceStorage.CreateMissileInstance(effectId, fromPosition, toPosition);
}
else if (unclampedOffset >= 768 || modifier == 3)
{
effectId = message.ReadUnsignedByte();
effect = AppearanceStorage.CreateEffectInstance(effectId);
}
else
{
throw new System.NotImplementedException();
}
if (!effect)
{
throw new System.Exception("ProtocolGame.ParseGraphicalEffects: Unknown effect: " + effectId);
}
WorldMapStorage.AppendEffect(fromPosition, effect);
modifier = message.ReadUnsignedByte();
}
}
private void ParseMissleEffect(Internal.CommunicationStream message)
{
var fromPosition = message.ReadPosition();
var toPosition = message.ReadPosition();
byte missleId = message.ReadUnsignedByte();
var missle = AppearanceStorage.CreateMissileInstance(missleId, fromPosition, toPosition);
if (!missle)
{
throw new System.Exception("ProtocolGame.ParseMissleEffect: Unknown missle id: " + missleId);
}
WorldMapStorage.AppendEffect(fromPosition, missle);
}