Add not predicate and docs to custom predicates

[no changelog]

1 files changed, 23 insertions, 0 deletions

diff --git a/src/main/kotlin/moe/nea/firmament/features/texturepack/NotPredicate.kt b/src/main/kotlin/moe/nea/firmament/features/texturepack/NotPredicate.kt
new file mode 100644
index 0000000..9d584cf
--- /dev/null
+++ b/src/main/kotlin/moe/nea/firmament/features/texturepack/NotPredicate.kt
@@ -0,0 +1,23 @@
+/*
+ * SPDX-FileCopyrightText: 2024 Linnea Gräf <nea@nea.moe>
+ *
+ * SPDX-License-Identifier: GPL-3.0-or-later
+ */
+
+package moe.nea.firmament.features.texturepack
+
+import com.google.gson.JsonElement
+import com.google.gson.JsonObject
+import net.minecraft.item.ItemStack
+
+class NotPredicate(val children: Array<FirmamentModelPredicate>) : FirmamentModelPredicate {
+    override fun test(stack: ItemStack): Boolean {
+        return children.none { it.test(stack) }
+    }
+
+    object Parser : FirmamentModelPredicateParser {
+        override fun parse(jsonElement: JsonElement): FirmamentModelPredicate {
+            return NotPredicate(CustomModelOverrideParser.parsePredicates(jsonElement as JsonObject).toTypedArray())
+        }
+    }
+}