core/src/ru/deadsoftware/cavedroid/game/objects/drop/Drop.kt

   1 package ru.deadsoftware.cavedroid.game.objects.drop
   2
   3 import com.badlogic.gdx.math.Intersector
   4 import com.badlogic.gdx.math.Rectangle
   5 import com.badlogic.gdx.math.Vector2
   6 import ru.deadsoftware.cavedroid.game.GameItemsHolder
   7 import ru.deadsoftware.cavedroid.game.model.item.Item
   8
   9 class Drop @JvmOverloads constructor(
  10     x: Float,
  11     y: Float,
  12     _item: Item,
  13     val amount: Int = 1,
  14 ) : Rectangle(x, y, DROP_SIZE, DROP_SIZE) {
  15
  16     val itemKey = _item.params.key
  17     val velocity = getInitialVelocity()
  18     var pickedUp = false
  19
  20     @Suppress("UNNECESSARY_LATEINIT")
  21     @Transient
  22     lateinit var item: Item
  23         private set
  24
  25     init {
  26         item = _item
  27     }
  28
  29     fun initItem(gameItemsHolder: GameItemsHolder) {
  30         if (this::item.isInitialized) {
  31             return
  32         }
  33
  34         item = gameItemsHolder.getItem(itemKey)
  35     }
  36
  37     fun canMagnetTo(rectangle: Rectangle): Boolean {
  38         val magnetArea = getMagnetArea()
  39         return Intersector.overlaps(magnetArea, rectangle)
  40     }
  41
  42     private fun getMagnetArea(): Rectangle {
  43         return Rectangle(
  44             /* x = */ x - MAGNET_DISTANCE,
  45             /* y = */ y - MAGNET_DISTANCE,
  46             /* width = */ width + MAGNET_DISTANCE * 2,
  47             /* height = */ height + MAGNET_DISTANCE * 2,
  48         )
  49     }
  50
  51     companion object {
  52         private const val MAGNET_DISTANCE = 8f
  53
  54         const val MAGNET_VELOCITY = 256f
  55         const val DROP_SIZE = 8f
  56
  57         private fun getInitialVelocity(): Vector2 = Vector2(0f, -1f)
  58     }
  59 }