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package o1game.Model
import scala.collection.mutable.{Buffer,Map}
/** A `Player` object represents a player character controlled by one real-life player
* of the program.
*
* A player object’s state is mutable: the player’s location and possessions can change,
* for instance.
*
* @param startingArea the player’s initial location */
class Player(name: String, initialLocation: Area) extends Entity(name, initialLocation):
private val observations: Buffer[String] = Buffer.empty
override def observe(observation: String): Unit =
this.observations.append(observation)
def readAndClearObservations(): Vector[String] =
val res = this.observations.toVector
observations.clear()
res
end Player
/** An in-game entity.
*
* @param name the name of the entity
* @param initialLocation the Area where the entity is instantiated
*/
class Entity(val name: String, initialLocation: Area):
private var currentLocation: Area = initialLocation
private var quitCommandGiven = false // one-way flag
private val inventory: Map[String, Item] = Map()
/** Determines if the player has indicated a desire to quit the game. */
def hasQuit = this.quitCommandGiven // TODO: This is probably unneccessary?
/** Does nothing, except possibly in inherited classes. */
def observe(observation: String): Unit =
println("no observation made.")
()
/** Returns the player’s current location. */
def location = this.currentLocation
/** Attempts to move the player in the given direction. This is successful if there
* is an exit from the player’s current location towards the direction name. Returns
* a description of the result: "You go DIRECTION." or "You can't go DIRECTION." */
def go(direction: String): (String, String) =
val destination = this.location.neighbor(direction)
if destination.isDefined then
val removeSuccess = this.currentLocation.removeEntity(this.name)
assert(removeSuccess.isDefined) // Production - assertions off
this.currentLocation = destination.getOrElse(this.currentLocation)
destination.foreach(_.addEntity(this))
(s"You go $direction.", s"$name goes $direction")
else
(
s"You can't go $direction.",
s"$name tries to go $direction and stumbles in their feet."
)
def pickUp(itemName: String): (String, String) =
this.currentLocation.removeItem(itemName) match
case Some(i) =>
this.inventory += i.name -> i
(s"You pick up the ${i.name}", s"$name picks up the ${i.name}")
case None => (s"There is no $itemName here to pick up.", "WHAAAT THIS SHOULDN'T HAPPEN???")
def drop(itemName: String): (String, String) =
this.inventory.remove(itemName) match
case Some(item) =>
this.currentLocation.addItem(item)
(s"You drop the $itemName", s"$name drops the $itemName")
case None => ("You don't have that!", s"$name reaches their backpack to drop $itemName but miserably fails to find it there.")
def sayTo(entity: Entity, message: String): (String, String) =
entity.observe(s"Alice: \"$message\"")
(s"You say so to ${entity.name}.", "")
def say(message: String): (String, String) =
("You say that aloud.", s"$name: \"$message\"")
/** Tells whether this entity can drop the specified item
* (if an action were to specify so).
*
* @param itemName the name to check
* @return whether this entity has this item and can drop it
*/
def canDrop(itemName: String): Boolean = this.inventory.contains(itemName)
/** Causes the player to rest for a short while (this has no substantial effect in game terms).
* Returns a description of what happened. */
def rest(): (String, String) =
("You rest for a while. Better get a move on, though.", "")
/** Returns a brief description of the player’s state, for debugging purposes. */
override def toString = "Now at: " + this.location.name
end Entity
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