core/src/ru/deadsoftware/cavedroid/game/model/item/InventoryItem.kt

   1 package ru.deadsoftware.cavedroid.game.model.item
   2
   3 import com.badlogic.gdx.graphics.Color
   4 import com.badlogic.gdx.graphics.g2d.SpriteBatch
   5 import com.badlogic.gdx.graphics.glutils.ShapeRenderer
   6 import ru.deadsoftware.cavedroid.game.GameItemsHolder
   7 import ru.deadsoftware.cavedroid.misc.Assets
   8 import ru.deadsoftware.cavedroid.misc.utils.drawSprite
   9 import ru.deadsoftware.cavedroid.misc.utils.drawString
  10 import ru.deadsoftware.cavedroid.misc.utils.px
  11 import java.io.Serializable
  12
  13 class InventoryItem @JvmOverloads constructor(
  14     val itemKey: String,
  15     _amount: Int = 1,
  16 ) : Serializable {
  17
  18     var amount = _amount
  19         set(value) {
  20             field = if (value < 0) {
  21                 0
  22             } else {
  23                 value
  24             }
  25         }
  26
  27     @Transient
  28     lateinit var item: Item
  29         private set
  30
  31     @JvmOverloads
  32     constructor(_item: Item, amount: Int = 1) : this(_item.params.key, amount) {
  33         item = _item
  34     }
  35
  36     fun init(gameItemsHolder: GameItemsHolder) {
  37         if (this::item.isInitialized) {
  38             return
  39         }
  40         item = gameItemsHolder.getItem(itemKey)
  41     }
  42
  43     @JvmOverloads
  44     fun add(count: Int = 1) {
  45         if (count > 0 && Int.MAX_VALUE - count < amount) {
  46             throw IllegalArgumentException("$amount + $count exceeds Int.MAX_VALUE")
  47         }
  48
  49         amount += count
  50     }
  51
  52     @JvmOverloads
  53     fun subtract(count: Int = 1) {
  54         if (count < 0) {
  55             throw IllegalArgumentException("Can't subtract negative amount")
  56         }
  57
  58         add(-count)
  59     }
  60
  61     @JvmOverloads
  62     fun canBeAdded(count: Int = 1): Boolean {
  63         return amount + count <= item.params.maxStack
  64     }
  65
  66     private fun drawAmountText(spriteBatch: SpriteBatch, text: String,  x: Float, y: Float) {
  67         spriteBatch.drawString(text, x + 1, y + 1, Color.BLACK)
  68         spriteBatch.drawString(text, x, y, Color.WHITE)
  69     }
  70
  71     fun drawSelected(spriteBatch: SpriteBatch, x: Float, y: Float) {
  72         if (item.isNone()) {
  73             return
  74         }
  75
  76         val sprite = item.sprite
  77         val amountString = amount.toString()
  78         spriteBatch.drawSprite(sprite, x - 10f, y - 10f, rotation = 0f, width = 20f, height = 20f)
  79         drawAmountText(
  80             spriteBatch = spriteBatch,
  81             text = amountString,
  82             x = x + 10f - Assets.getStringWidth(amountString) + 1f,
  83             y = y + 10f - Assets.getStringHeight(amountString) + 1f
  84         )
  85     }
  86
  87     fun draw(spriteBatch: SpriteBatch, shapeRenderer: ShapeRenderer, x: Float, y: Float) {
  88         if (item.isNone()) {
  89             return
  90         }
  91
  92         val sprite = item.sprite
  93         spriteBatch.drawSprite(sprite, x, y)
  94
  95         if (amount < 2) {
  96             return
  97         }
  98
  99         if (item.isTool()) {
 100             spriteBatch.end()
 101             shapeRenderer.begin(ShapeRenderer.ShapeType.Filled)
 102             shapeRenderer.color = Color.GREEN
 103             shapeRenderer.rect(
 104                 /* x = */ x,
 105                 /* y = */ y + 1.px - 2,
 106                 /* width = */ 1.px * (amount.toFloat() / item.params.maxStack.toFloat()),
 107                 /* height = */ 2f
 108             )
 109             shapeRenderer.end()
 110             spriteBatch.begin()
 111         } else {
 112             val amountString = amount.toString()
 113             drawAmountText(
 114                 spriteBatch = spriteBatch,
 115                 text = amountString,
 116                 x = x + 1.px - Assets.getStringWidth(amountString),
 117                 y = y + 1.px - Assets.getStringHeight(amountString)
 118             )
 119         }
 120     }
 121
 122 }