def from_bytes(spline_bytes):
if len(spline_bytes < 42):
return None
bytes_read = 0
spline = MovementSpline()
spline.flags = unpack('<I', spline_bytes[:4])[0]
bytes_read += 4
if spline.flags & SplineFlags.SPLINEFLAG_SPOT:
spline.spot = Vector.from_bytes(spline_bytes[bytes_read:12])
bytes_read += 12
if spline.flags & SplineFlags.SPLINEFLAG_TARGET:
spline.guid = unpack('<Q', spline_bytes[bytes_read:8])[0]
bytes_read += 8
if spline.flags & SplineFlags.SPLINEFLAG_FACING:
spline.facing = unpack('<f', spline_bytes[bytes_read:4])[0]
bytes_read += 4
spline.elapsed, spline.total_time = unpack('<2I',
spline_bytes[bytes_read:8])
bytes_read += 8
points_length = unpack('<I', spline_bytes[bytes_read:4])[0]
bytes_read += 4
for i in range(points_length):
spline.points.append(Vector.from_bytes(
spline_bytes[bytes_read:12]))
bytes_read += 12
return spline
def get_target_info(world_session, target_mask, target_bytes):
caster = world_session.player_mgr
if target_mask & SpellTargetMask.CAN_TARGET_TERRAIN != 0 and len(
target_bytes) == 12:
target_info = Vector.from_bytes(
target_bytes) # Terrain, target is vector.
elif len(target_bytes) == 8:
target_info = unpack('<Q',
target_bytes)[0] # Some object (read guid).
else:
target_info = caster # Self
if target_mask & SpellTargetMask.CAN_TARGET_TERRAIN:
return target_info
if target_mask & SpellTargetMask.UNIT and target_info != caster:
return MapManager.get_surrounding_unit_by_guid(
caster, target_info, include_players=True)
if target_mask & SpellTargetMask.ITEM_TARGET_MASK and not target_mask & SpellTargetMask.TRADE_ITEM:
return caster.inventory.get_item_info_by_guid(target_info)[
3] # (container_slot, container, slot, item).
if target_mask & SpellTargetMask.CAN_TARGET_OBJECTS: # Can also include items, so we check for that first.
return MapManager.get_surrounding_gameobject_by_guid(
caster, target_info)
if target_mask & SpellTargetMask.ITEM_TARGET_MASK and target_mask & SpellTargetMask.TRADE_ITEM:
if caster.trade_data and caster.trade_data.other_player and caster.trade_data.other_player.trade_data:
return caster.trade_data.other_player.trade_data.get_item_by_slot(
target_info)
return caster # Assume self cast for now. Invalid target will be resolved later.
def handle(world_session, socket, reader):
if len(reader.data) >= 6: # Avoid handling empty cast spell packet.
spell_id, target_mask = unpack('<IH', reader.data[:6])
caster = world_session.player_mgr
if target_mask & SpellTargetMask.CAN_TARGET_TERRAIN != 0 and len(
reader.data) >= 18:
target_info = Vector.from_bytes(
reader.data[-12:]) # Terrain, target is vector
elif len(reader.data) == 14:
target_info = unpack(
'<Q', reader.data[-8:])[0] # some object (read guid)
else:
target_info = caster # Self
if target_mask & SpellTargetMask.CAN_TARGET_TERRAIN:
spell_target = target_info
elif target_mask & SpellTargetMask.UNIT and target_info != caster:
spell_target = MapManager.get_surrounding_unit_by_guid(
caster, target_info, include_players=True)
elif target_mask & SpellTargetMask.ITEM_TARGET_MASK:
spell_target = caster.inventory.get_item_info_by_guid(
target_info)[3] # (container_slot, container, slot, item)
elif target_mask & SpellTargetMask.CAN_TARGET_OBJECTS: # Can also include items so we check for that first
spell_target = MapManager.get_surrounding_gameobject_by_guid(
caster, target_info)
else:
spell_target = caster # Assume self cast for now. Invalid target will be resolved later
world_session.player_mgr.spell_manager.handle_cast_attempt(
spell_id, world_session.player_mgr, spell_target, target_mask)
return 0
