1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
|
package scalevalapokalypsi.Model.Entities
import scala.collection.mutable.Map
import scalevalapokalypsi.Model.*
/** 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()
/** 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 $itemName here to pick up.",
s"${this.name} tries to pick up something but gets just dirt in their hands."
)
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 $itemName but miserably fails to find it there."
)
def sayTo(entity: Entity, message: String): (String, String) =
entity.observe(s"${this.name}: \"$message\"")
(s"You say so to ${entity.name}.", "")
def say(message: String): (String, String) =
("You say that aloud.", s"$name: \"$message\"")
/** Tells whether this entity can drop the specified item
* (if an action were to specify so).
*
* @param itemName the name to check
* @return whether this entity has this item and can drop it
*/
def canDrop(itemName: String): Boolean = this.inventory.contains(itemName)
/** Causes the player to rest for a turn.
* Returns a description of what happened. */
def rest(): (String, String) =
("You rest for a while. Better get a move on, though.", "")
/** Returns a brief description of the player’s state, for debugging purposes. */
override def toString = s"${this.name} at ${this.location.name}"
end Entity
|
