Add tint override to texture packs

src/main/kotlin/util/ErrorUtil.kt

@@ -7,10 +7,24 @@ object ErrorUtil {
 		Thread.currentThread().stackTrace.any { it.className.startsWith("org.junit.") } || Firmament.DEBUG
 	}
 
+	inline fun softCheck(message: String, func: () -> Boolean) {
+		if (!aggressiveErrors) return
+		if (func()) return
+		error(message)
+	}
+
 	@Suppress("NOTHING_TO_INLINE") // Suppressed since i want the logger to not pick up the ErrorUtil stack-frame
 	inline fun softError(message: String) {
 		if (aggressiveErrors) error(message)
 		else Firmament.logger.error(message)
 	}
 
+	inline fun <T : Any> notNullOr(nullable: T?, message: String, orElse: () -> T): T {
+		if (nullable == null) {
+			softError(message)
+			return orElse()
+		}
+		return nullable
+	}
+
 }

src/main/kotlin/util/filter/IteratorFilterSet.kt

@@ -1,33 +0,0 @@
-
-package moe.nea.firmament.util.filter
-
-abstract class IteratorFilterSet<K>(val original: java.util.Set<K>) : java.util.Set<K> by original {
-    abstract fun shouldKeepElement(element: K): Boolean
-
-    override fun iterator(): MutableIterator<K> {
-        val parentIterator = original.iterator()
-        return object : MutableIterator<K> {
-            var lastEntry: K? = null
-            override fun hasNext(): Boolean {
-                while (lastEntry == null) {
-                    if (!parentIterator.hasNext())
-                        break
-                    val element = parentIterator.next()
-                    if (!shouldKeepElement(element)) continue
-                    lastEntry = element
-                }
-                return lastEntry != null
-            }
-
-            override fun next(): K {
-                if (!hasNext()) throw NoSuchElementException()
-                return lastEntry ?: throw NoSuchElementException()
-            }
-
-            override fun remove() {
-                TODO("Not yet implemented")
-            }
-        }
-    }
-}
-