func internalCreatureMove(_creature interfaces.ICreature, _direction uint16) world.ReturnValue {
ret := world.RET_NOTPOSSIBLE
if _creature.CanMove() {
sourcePosition := _creature.GetPosition()
destinationPosition := _creature.GetPosition()
switch _direction {
case interfaces.DIR_NORTH:
destinationPosition.Y -= 1
case interfaces.DIR_SOUTH:
destinationPosition.Y += 1
case interfaces.DIR_WEST:
destinationPosition.X -= 1
case interfaces.DIR_EAST:
destinationPosition.X += 1
}
// Current TilePointLayer
srcTpl, retValue := world.GetTilePointLayer(sourcePosition.MapId, sourcePosition.X, sourcePosition.Y, sourcePosition.Z)
if retValue != world.RET_NOERROR {
log.Debug("Game", "internalCreatureMove", "Source '[%d] %s' not found!", sourcePosition.MapId, sourcePosition.String())
return retValue
}
// Destination TilePointLayer
dstTpl, retValue := world.GetTilePointLayer(destinationPosition.MapId, destinationPosition.X, destinationPosition.Y, destinationPosition.Z)
if retValue != world.RET_NOERROR {
log.Debug("Game", "internalCreatureMove", "Destination '[%d] %s' not found!", destinationPosition.MapId, destinationPosition.String())
return retValue
}
// Move creature to destination tile
if ret = srcTpl.RemoveCreature(_creature, true); ret == world.RET_NOTPOSSIBLE {
return ret
}
if ret = dstTpl.AddCreature(_creature, true); ret == world.RET_NOTPOSSIBLE {
srcTpl.AddCreature(_creature, false) // Something went wrong. Put creature back on src TilePoint
_creature.SetPosition(sourcePosition)
return ret
}
if ret == world.RET_NOERROR {
_creature.SetPosition(destinationPosition)
finalDestination := _creature.GetPosition()
// Get list of creatures who're "new"
visibleCreatures := world.GetVisibleCreaturesInDirection(finalDestination.MapId, finalDestination.X, finalDestination.Y, finalDestination.Z, _direction)
for _, value := range visibleCreatures {
if value != nil {
_creature.AddVisibleCreature(value)
}
}
// Tell Creature he has moved
_creature.Walk(sourcePosition, destinationPosition, false, _direction)
}
}
return ret
}
