1 files changed, 69 insertions, 0 deletions
diff --git a/src/main/java/at/hannibal2/skyhanni/features/stranded/HighlightPlaceableNpcs.kt b/src/main/java/at/hannibal2/skyhanni/features/stranded/HighlightPlaceableNpcs.kt
new file mode 100644
index 000000000..52c450ca4
--- /dev/null
+++ b/src/main/java/at/hannibal2/skyhanni/features/stranded/HighlightPlaceableNpcs.kt
@@ -0,0 +1,69 @@
+package at.hannibal2.skyhanni.features.stranded
+
+import at.hannibal2.skyhanni.SkyHanniMod
+import at.hannibal2.skyhanni.events.GuiContainerEvent
+import at.hannibal2.skyhanni.events.InventoryCloseEvent
+import at.hannibal2.skyhanni.events.InventoryFullyOpenedEvent
+import at.hannibal2.skyhanni.utils.InventoryUtils
+import at.hannibal2.skyhanni.utils.ItemUtils.getLore
+import at.hannibal2.skyhanni.utils.LorenzColor
+import at.hannibal2.skyhanni.utils.LorenzUtils
+import at.hannibal2.skyhanni.utils.RenderUtils.highlight
+import net.minecraftforge.fml.common.eventhandler.EventPriority
+import net.minecraftforge.fml.common.eventhandler.SubscribeEvent
+
+class HighlightPlaceableNpcs {
+    private val config get() = SkyHanniMod.feature.stranded.highlightPlaceableNpcs
+    private val locationPattern = "§7Location: §f\\[§e\\d+§f, §e\\d+§f, §e\\d+§f]".toPattern()
+
+    private var inInventory = false
+    private var highlightedItems = emptyList<Int>()
+
+    @SubscribeEvent
+    fun onInventoryOpen(event: InventoryFullyOpenedEvent) {
+        inInventory = false
+        if (!isEnabled()) return
+
+        if (event.inventoryName != "Island NPCs") return
+
+        val highlightedItems = mutableListOf<Int>()
+        for ((slot, stack) in event.inventoryItems) {
+            if (isPlaceableNpc(stack.getLore())) {
+                highlightedItems.add(slot)
+            }
+        }
+        inInventory = true
+        this.highlightedItems = highlightedItems
+    }
+
+    @SubscribeEvent
+    fun onInventoryClose(event: InventoryCloseEvent) {
+        inInventory = false
+        highlightedItems = emptyList()
+    }
+
+    @SubscribeEvent(priority = EventPriority.LOW)
+    fun onBackgroundDrawn(event: GuiContainerEvent.BackgroundDrawnEvent) {
+        if (!isEnabled() || !inInventory) return
+        for (slot in InventoryUtils.getItemsInOpenChest()) {
+            if (slot.slotIndex in highlightedItems) {
+                slot highlight LorenzColor.GREEN
+            }
+        }
+    }
+
+    private fun isPlaceableNpc(lore: List<String>): Boolean {
+        // Checking if NPC & placeable
+        if (lore.isEmpty() || !(lore.last() == "§ethis NPC!" || lore.last() == "§eyour location!")) {
+            return false
+        }
+
+        // Checking if is already placed
+        for (line in lore) {
+            if (locationPattern.matcher(line).matches()) return false
+        }
+        return true
+    }
+
+    private fun isEnabled() = LorenzUtils.inSkyBlock && config
+}