Add Ender Chest to InventoryViewer (#68)

src/main/kotlin/com/lambda/client/gui/hudgui/elements/player/InventoryViewer.kt

@@ -10,9 +10,15 @@ import com.lambda.client.util.graphics.VertexHelper
 import com.lambda.client.util.items.storageSlots
 import com.lambda.client.util.math.Vec2d
 import com.lambda.client.util.threads.runSafe
+import net.minecraft.client.gui.inventory.GuiContainer
 import net.minecraft.client.renderer.GlStateManager
 import net.minecraft.client.renderer.Tessellator
 import net.minecraft.client.renderer.vertex.DefaultVertexFormats
+import net.minecraft.init.Blocks
+import net.minecraft.inventory.Container
+import net.minecraft.inventory.ContainerChest
+import net.minecraft.inventory.InventoryBasic
+import net.minecraft.item.ItemStack
 import net.minecraft.util.ResourceLocation
 import org.lwjgl.opengl.GL11.*
 
@@ -21,14 +27,15 @@ internal object InventoryViewer : HudElement(
     category = Category.PLAYER,
     description = "Items in Inventory"
 ) {
+    private val enderChest by setting("Inventory", SlotType.PLAYER)
     private val mcTexture by setting("Minecraft Texture", false)
     private val showIcon by setting("Show Icon", false, { !mcTexture })
     private val iconScale by setting("Icon Scale", 0.5f, 0.1f..1.0f, 0.1f, { !mcTexture && showIcon })
     private val background by setting("Background", true, { !mcTexture })
     private val alpha by setting("Alpha", 150, 0..255, 1, { !mcTexture })
-
     private val containerTexture = ResourceLocation("textures/gui/container/inventory.png")
     private val lambdaIcon = ResourceLocation("lambda/lambda_icon.png")
+    private var enderChestContents: MutableList<ItemStack> = MutableList(27) { ItemStack(Blocks.AIR) }
 
     override val hudWidth: Float = 162.0f
     override val hudHeight: Float = 54.0f
@@ -38,6 +45,7 @@ internal object InventoryViewer : HudElement(
         runSafe {
             drawFrame(vertexHelper)
             drawFrameTexture()
+            checkEnderChest()
             drawItems()
         }
     }
@@ -85,16 +93,42 @@ internal object InventoryViewer : HudElement(
         }
     }
 
+
+    private fun checkEnderChest() {
+        if (mc.currentScreen is GuiContainer) {
+            val container = (mc.currentScreen as GuiContainer).inventorySlots
+            if (container is ContainerChest && container.lowerChestInventory is InventoryBasic) {
+                val inv = (container.lowerChestInventory as InventoryBasic)
+                if (inv.name.equals("Ender Chest", true)) {
+                    for (i in 0..26) enderChestContents[i] = container.inventory[i]
+                }
+            }
+        }
+    }
+
     private fun SafeClientEvent.drawItems() {
-        for ((index, slot) in player.storageSlots.withIndex()) {
-            val itemStack = slot.stack
-            if (itemStack.isEmpty) continue
+        if (enderChest == SlotType.ENDER_CHEST) {
+            for ((index, stack) in enderChestContents.withIndex()) {
+                if (stack.isEmpty) continue
+
+                val slotX = index % 9 * 18 + 1
+                val slotY = index / 9 * 18 + 1
+                RenderUtils2D.drawItem(stack, slotX, slotY)
+            }
+        } else {
+            for ((index, slot) in player.storageSlots.withIndex()) {
+                val itemStack = slot.stack
+                if (itemStack.isEmpty) continue
 
-            val slotX = index % 9 * 18 + 1
-            val slotY = index / 9 * 18 + 1
+                val slotX = index % 9 * 18 + 1
+                val slotY = index / 9 * 18 + 1
 
-            RenderUtils2D.drawItem(itemStack, slotX, slotY)
+                RenderUtils2D.drawItem(itemStack, slotX, slotY)
+            }
         }
     }
 
+    private enum class SlotType {
+        PLAYER, ENDER_CHEST
+    }
 }