Item.kt

   1 package ru.deadsoftware.cavedroid.game.model.item
   2
   3 import com.badlogic.gdx.graphics.g2d.Sprite
   4 import ru.deadsoftware.cavedroid.game.model.block.Block
   5 import kotlin.contracts.ExperimentalContracts
   6 import kotlin.contracts.contract
   7
   8 @OptIn(ExperimentalContracts::class)
   9 sealed class Item {
  10
  11     abstract val params: CommonItemParams
  12     abstract val sprite: Sprite
  13
  14     fun isPlaceable(): Boolean {
  15         contract { returns(true) implies (this@Item is Placeable) }
  16         return this is Placeable
  17     }
  18
  19     fun isTool(): Boolean {
  20         contract { returns(true) implies (this@Item is Tool) }
  21         return this is Tool
  22     }
  23
  24     fun isUsable(): Boolean {
  25         contract { returns(true) implies (this@Item is Placeable) }
  26         return this is Placeable
  27     }
  28
  29     sealed class Tool : Item() {
  30         abstract val mobDamageMultiplier: Float
  31         abstract val blockDamageMultiplier: Float
  32     }
  33
  34     sealed class Usable : Item() {
  35         abstract val useActionKey: String
  36     }
  37
  38     data class Placeable(
  39         override val params: CommonItemParams,
  40         val block: Block
  41     ) : Item() {
  42         override val sprite: Sprite get() = block.sprite
  43     }
  44
  45     data class Sword(
  46         override val params: CommonItemParams,
  47         override val sprite: Sprite,
  48         override val mobDamageMultiplier: Float,
  49         override val blockDamageMultiplier: Float,
  50     ) : Tool()
  51
  52     data class Shovel(
  53         override val params: CommonItemParams,
  54         override val sprite: Sprite,
  55         override val mobDamageMultiplier: Float,
  56         override val blockDamageMultiplier: Float,
  57     ) : Tool()
  58
  59     data class Bucket(
  60         override val params: CommonItemParams,
  61         override val sprite: Sprite,
  62         override val useActionKey: String
  63     ) : Usable()
  64
  65 }