X-Git-Url: http://deadsoftware.ru/gitweb?a=blobdiff_plain;f=core%2Fsrc%2Fru%2Fdeadsoftware%2Fcavedroid%2Fgame%2Fmodel%2Fitem%2FInventoryItem.kt;h=f847f7d0e3dd4d1f19ed91ee37266d3355a218c0;hb=3d972278cf3a54b6a7b574690ca4b41577464dce;hp=1e1f43eeb85ad707d4851b045aa25c6ec4de46bc;hpb=289536374d18bb05cde615c04d9fe576d6ac26bc;p=cavedroid.git

diff --git a/core/src/ru/deadsoftware/cavedroid/game/model/item/InventoryItem.kt b/core/src/ru/deadsoftware/cavedroid/game/model/item/InventoryItem.kt
index 1e1f43e..f847f7d 100644
--- a/core/src/ru/deadsoftware/cavedroid/game/model/item/InventoryItem.kt
+++ b/core/src/ru/deadsoftware/cavedroid/game/model/item/InventoryItem.kt
@@ -1,13 +1,32 @@
 package ru.deadsoftware.cavedroid.game.model.item
 
+import com.badlogic.gdx.graphics.Color
+import com.badlogic.gdx.graphics.g2d.SpriteBatch
+import com.badlogic.gdx.graphics.glutils.ShapeRenderer
 import ru.deadsoftware.cavedroid.game.GameItemsHolder
+import ru.deadsoftware.cavedroid.game.mobs.player.Inventory
+import ru.deadsoftware.cavedroid.misc.Assets
+import ru.deadsoftware.cavedroid.misc.utils.drawSprite
+import ru.deadsoftware.cavedroid.misc.utils.drawString
+import ru.deadsoftware.cavedroid.misc.utils.px
 import java.io.Serializable
+import kotlin.contracts.ExperimentalContracts
+import kotlin.contracts.contract
 
 class InventoryItem @JvmOverloads constructor(
     val itemKey: String,
-    val amount: Int = 1,
+    _amount: Int = 1,
 ) : Serializable {
 
+    var amount = _amount
+        set(value) {
+            field = if (value < 0) {
+                0
+            } else {
+                value
+            }
+        }
+
     @Transient
     lateinit var item: Item
         private set
@@ -24,4 +43,93 @@ class InventoryItem @JvmOverloads constructor(
         item = gameItemsHolder.getItem(itemKey)
     }
 
+    @JvmOverloads
+    fun add(count: Int = 1) {
+        if (count > 0 && Int.MAX_VALUE - count < amount) {
+            throw IllegalArgumentException("$amount + $count exceeds Int.MAX_VALUE")
+        }
+
+        amount += count
+    }
+
+    @JvmOverloads
+    fun subtract(count: Int = 1) {
+        if (count < 0) {
+            throw IllegalArgumentException("Can't subtract negative amount")
+        }
+
+        add(-count)
+    }
+
+    @JvmOverloads
+    fun canBeAdded(count: Int = 1): Boolean {
+        return amount + count <= item.params.maxStack
+    }
+
+    private fun drawAmountText(spriteBatch: SpriteBatch, text: String,  x: Float, y: Float) {
+        spriteBatch.drawString(text, x + 1, y + 1, Color.BLACK)
+        spriteBatch.drawString(text, x, y, Color.WHITE)
+    }
+
+    fun drawSelected(spriteBatch: SpriteBatch, x: Float, y: Float) {
+        if (item.isNone()) {
+            return
+        }
+
+        val sprite = item.sprite
+        val amountString = amount.toString()
+        spriteBatch.drawSprite(sprite, x - 10f, y - 10f, rotation = 0f, width = 20f, height = 20f)
+        drawAmountText(
+            spriteBatch = spriteBatch,
+            text = amountString,
+            x = x + 10f - Assets.getStringWidth(amountString) + 1f,
+            y = y + 10f - Assets.getStringHeight(amountString) + 1f
+        )
+    }
+
+    fun draw(spriteBatch: SpriteBatch, shapeRenderer: ShapeRenderer, x: Float, y: Float) {
+        if (item.isNone()) {
+            return
+        }
+
+        val sprite = item.sprite
+        val placeableMarginTop = (item as? Item.Placeable)?.block?.params?.spriteMargins?.top ?: 0
+        val placeableMarginLeft = (item as? Item.Placeable)?.block?.params?.spriteMargins?.left ?: 0
+        spriteBatch.drawSprite(sprite, x + placeableMarginLeft, y + placeableMarginTop)
+
+        if (amount < 2) {
+            return
+        }
+
+        if (item.isTool()) {
+            spriteBatch.end()
+            shapeRenderer.begin(ShapeRenderer.ShapeType.Filled)
+            shapeRenderer.color = Color.GREEN
+            shapeRenderer.rect(
+                /* x = */ x,
+                /* y = */ y + 1.px - 2,
+                /* width = */ 1.px * (amount.toFloat() / item.params.maxStack.toFloat()),
+                /* height = */ 2f
+            )
+            shapeRenderer.end()
+            spriteBatch.begin()
+        } else {
+            val amountString = amount.toString()
+            drawAmountText(
+                spriteBatch = spriteBatch,
+                text = amountString,
+                x = x + 1.px - Assets.getStringWidth(amountString),
+                y = y + 1.px - Assets.getStringHeight(amountString)
+            )
+        }
+    }
+
+    companion object {
+
+        @OptIn(ExperimentalContracts::class)
+        fun InventoryItem?.isNoneOrNull(): Boolean {
+            contract { returns(false) implies(this@isNoneOrNull != null) }
+            return this?.item == null || this.item.isNone()
+        }
+    }
 }