private static INPC EnsureCorrectXAndY(INPC npc, byte destinationX, byte destinationY)
{
var opposite = npc.Direction.Opposite();
var tempNPC = npc
.WithDirection(opposite)
.WithX(destinationX)
.WithY(destinationY);
return(npc
.WithX((byte)tempNPC.GetDestinationX())
.WithY((byte)tempNPC.GetDestinationY()));
}
private void HandleNPCWalk(IPacket packet, INPC npc)
{
//npc remove from view sets x/y to either 0,0 or 252,252 based on target coords
var x = packet.ReadChar();
var y = packet.ReadChar();
var npcDirection = (EODirection)packet.ReadChar();
if (packet.ReadBytes(3).Any(b => b != 255))
{
throw new MalformedPacketException("Expected 3 bytes of value 0xFF in NPC_PLAYER packet for Walk action", packet);
}
var updatedNPC = npc.WithDirection(npcDirection);
updatedNPC = EnsureCorrectXAndY(updatedNPC, x, y);
_currentMapStateRepository.NPCs.Remove(npc);
_currentMapStateRepository.NPCs.Add(updatedNPC);
foreach (var notifier in _npcAnimationNotifiers)
{
notifier.StartNPCWalkAnimation(npc.Index);
}
}
private Optional <INPC> HandleNPCAttack(IPacket packet, INPC npc)
{
var isDead = packet.ReadChar() == 2; //2 if target player is dead, 1 if alive
var npcDirection = (EODirection)packet.ReadChar();
var characterID = packet.ReadShort();
var damageTaken = packet.ReadThree();
var playerPercentHealth = packet.ReadThree();
if (packet.ReadBytes(2).Any(b => b != 255))
{
throw new MalformedPacketException("Expected 2 bytes of value 0xFF in NPC_PLAYER packet for Attack action", packet);
}
if (characterID == _characterRepository.MainCharacter.ID)
{
var characterToUpdate = _characterRepository.MainCharacter;
var stats = characterToUpdate.Stats;
stats = stats.WithNewStat(CharacterStat.HP, (short)Math.Max(stats[CharacterStat.HP] - damageTaken, 0));
var props = characterToUpdate.RenderProperties;
if (isDead)
{
props = props.WithDead();
}
_characterRepository.MainCharacter = characterToUpdate.WithStats(stats).WithRenderProperties(props);
foreach (var notifier in _mainCharacterNotifiers)
{
notifier.NotifyTakeDamage(damageTaken, playerPercentHealth);
}
}
else
{
var characterToUpdate = _currentMapStateRepository.Characters.Single(x => x.ID == characterID);
var stats = characterToUpdate.Stats;
stats = stats.WithNewStat(CharacterStat.HP, (short)Math.Max(stats[CharacterStat.HP] - damageTaken, 0));
var props = characterToUpdate.RenderProperties;
if (isDead)
{
props = props.WithDead();
}
var updatedCharacter = characterToUpdate.WithStats(stats).WithRenderProperties(props);
_currentMapStateRepository.Characters.Remove(characterToUpdate);
_currentMapStateRepository.Characters.Add(updatedCharacter);
foreach (var notifier in _otherCharacterNotifiers)
{
notifier.OtherCharacterTakeDamage(characterID, playerPercentHealth, damageTaken);
}
}
foreach (var notifier in _npcAnimationNotifiers)
{
notifier.StartNPCAttackAnimation(npc.Index);
}
return(new Optional <INPC>(npc.WithDirection(npcDirection)));
}