Apply temporary fix for rendering of the cursor

BauSystem/BauSystem_Main/src/de/steamwar/bausystem/features/cannonCore/CannonCoreCommand.kt

@@ -21,7 +21,6 @@ package de.steamwar.bausystem.features.cannonCore
 
 import de.steamwar.bausystem.SWUtils
 import de.steamwar.command.SWCommand
-import de.steamwar.linkage.Linked
 import org.bukkit.entity.Player
 
 object CannonCoreCommand : SWCommand("cannoncore") {

BauSystem/BauSystem_Main/src/de/steamwar/bausystem/features/cannonCore/CannonCoreWand.kt

@@ -19,16 +19,19 @@
 
 package de.steamwar.bausystem.features.cannonCore
 
+import de.steamwar.bausystem.BauSystem
 import de.steamwar.bausystem.utils.ItemUtils
 import de.steamwar.core.SWPlayer
 import de.steamwar.inventory.SWItem
 import org.bukkit.Material
+import org.bukkit.entity.Player
 import org.bukkit.event.EventHandler
 import org.bukkit.event.Listener
 import org.bukkit.event.player.PlayerItemHeldEvent
 import org.bukkit.inventory.ItemStack
+import org.bukkit.plugin.java.JavaPlugin
 
-object CannonCoreWand: Listener {
+object CannonCoreWand : Listener {
     val wandId = "CANNON_CORE_WAND"
     val wandMaterial = Material.BREEZE_ROD
 
@@ -41,10 +44,10 @@ object CannonCoreWand: Listener {
 
         val wand = SWItem(wandMaterial, title, lore, false, null)
         val item = wand.itemStack
-        return  ItemUtils.setItem(item, wandId)
+        return ItemUtils.setItem(item, wandId)
     }
 
-    fun isWandItem(itemStack: ItemStack): Boolean {
+    fun isWandItem(itemStack: ItemStack?): Boolean {
         return ItemUtils.isItem(itemStack, wandId)
     }
 
@@ -52,12 +55,21 @@ object CannonCoreWand: Listener {
     fun onPlayerEquip(event: PlayerItemHeldEvent) {
         val player = event.player
         val swPlayer = SWPlayer.of(event.player)
-        val item = player.inventory.getItem(event.newSlot) ?: return
+        val item = player.inventory.getItem(event.newSlot)
 
-        if(!isWandItem(item)) {
+        if (isWandItem(item)) {
+            scheduleDisplayUpdate(player)
+        } else {
             swPlayer.removeComponent(EmptyCannonCoreWandDisplay::class.java)
         }
-        else {
+    }
+
+    private fun scheduleDisplayUpdate(player: Player) {
+        BauSystem.runTaskLater(JavaPlugin.getPlugin(BauSystem::class.java), Runnable { updateDisplay(player) }, 2)
+    }
+
+    private fun updateDisplay(player: Player) {
+        if (isWandItem(player.inventory.itemInMainHand)) {
             EmptyCannonCoreWandDisplay(player)
         }
     }

BauSystem/BauSystem_Main/src/de/steamwar/bausystem/features/cannonCore/EmptyCannonCoreWandDisplay.kt

@@ -26,10 +26,11 @@ import org.bukkit.entity.Player
 
 class EmptyCannonCoreWandDisplay : SWPlayer.Component {
     val coresDisplay: CannonCoresDisplay
-    val cursor: Cursor
+    var cursor: Cursor
 
     constructor(owner: Player) {
         coresDisplay = CannonCoresDisplay(owner)
+        SWPlayer.of(owner).setComponent(this)
 
         cursor = Cursor(
             coresDisplay.displayServer, owner, Material.GLASS, Material.COMMAND_BLOCK,
@@ -39,11 +40,18 @@ class EmptyCannonCoreWandDisplay : SWPlayer.Component {
         ) { location, hitEntity, action ->
             print("Hello")
         }
+    }
 
-        SWPlayer.of(owner).setComponent(this)
+    override fun onMount(player: SWPlayer) {
+        coresDisplay.onMount(player)
     }
 
     override fun onUnmount(player: SWPlayer) {
-        player.removeComponent(cursor::class.java)
+
+        player.getComponent(Cursor::class.java)
+            .filter { it === cursor }
+            .ifPresent { player.removeComponent(Cursor::class.java) }
+
+        coresDisplay.onUnmount(player)
     }
 }