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

   1 package ru.deadsoftware.cavedroid.game.objects
   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(
  10     x: Float,
  11     y: Float,
  12     _item: Item,
  13 ) : Rectangle(x, y, DROP_SIZE, DROP_SIZE) {
  14
  15     val itemKey = _item.params.key
  16     val velocity = getInitialVelocity()
  17     var pickedUp = false
  18
  19     @Transient
  20     lateinit var item: Item
  21         private set
  22
  23     init {
  24         item = _item
  25     }
  26
  27     fun initItem(gameItemsHolder: GameItemsHolder) {
  28         if (this::item.isInitialized) {
  29             return
  30         }
  31
  32         item = gameItemsHolder.getItem(itemKey)
  33     }
  34
  35     fun canMagnetTo(rectangle: Rectangle): Boolean {
  36         val magnetArea = getMagnetArea()
  37         return Intersector.overlaps(magnetArea, rectangle)
  38     }
  39
  40     private fun getMagnetArea(): Rectangle {
  41         return Rectangle(
  42             /* x = */ x - MAGNET_DISTANCE,
  43             /* y = */ y - MAGNET_DISTANCE,
  44             /* width = */ width + MAGNET_DISTANCE * 2,
  45             /* height = */ height + MAGNET_DISTANCE * 2,
  46         )
  47     }
  48
  49     companion object {
  50         private const val MAGNET_DISTANCE = 16f
  51
  52         const val MAGNET_VELOCITY = 128f
  53         const val DROP_SIZE = 8f
  54
  55         private fun getInitialVelocity(): Vector2 = Vector2(0f, -1f)
  56     }
  57 }