Add fabric:false resource condition

fabric-data-generation-api-v1/src/testmod/generated/data/fabric-data-gen-api-v1-testmod/advancement/recipes/misc/gold_ingot.json

@@ -1,10 +1,7 @@
 {
   "fabric:load_conditions": [
     {
-      "condition": "fabric:not",
-      "value": {
-        "condition": "fabric:true"
-      }
+      "condition": "fabric:false"
     }
   ],
   "parent": "minecraft:recipes/root",

fabric-data-generation-api-v1/src/testmod/generated/data/fabric-data-gen-api-v1-testmod/advancement/test/root_not_loaded.json

@@ -1,10 +1,7 @@
 {
   "fabric:load_conditions": [
     {
-      "condition": "fabric:not",
-      "value": {
-        "condition": "fabric:true"
-      }
+      "condition": "fabric:false"
     }
   ],
   "criteria": {

fabric-data-generation-api-v1/src/testmod/generated/data/fabric-data-gen-api-v1-testmod/loot_table/blocks/simple_block.json

@@ -3,10 +3,7 @@
     {
       "condition": "fabric:not",
       "value": {
-        "condition": "fabric:not",
-        "value": {
-          "condition": "fabric:true"
-        }
+        "condition": "fabric:false"
       }
     },
     {

fabric-data-generation-api-v1/src/testmod/generated/data/fabric-data-gen-api-v1-testmod/loot_table/entities/simple_entity.json

@@ -3,10 +3,7 @@
     {
       "condition": "fabric:not",
       "value": {
-        "condition": "fabric:not",
-        "value": {
-          "condition": "fabric:true"
-        }
+        "condition": "fabric:false"
       }
     },
     {

fabric-data-generation-api-v1/src/testmod/generated/data/fabric-data-gen-api-v1-testmod/recipe/gold_ingot.json

@@ -1,10 +1,7 @@
 {
   "fabric:load_conditions": [
     {
-      "condition": "fabric:not",
-      "value": {
-        "condition": "fabric:true"
-      }
+      "condition": "fabric:false"
     }
   ],
   "type": "minecraft:crafting_shapeless",

fabric-data-generation-api-v1/src/testmod/java/net/fabricmc/fabric/test/datagen/DataGeneratorTestEntrypoint.java

@@ -105,7 +105,7 @@
 
 public class DataGeneratorTestEntrypoint implements DataGeneratorEntrypoint {
 	private static final ResourceCondition ALWAYS_LOADED = ResourceConditions.alwaysTrue();
-	private static final ResourceCondition NEVER_LOADED = ResourceConditions.not(ALWAYS_LOADED);
+	private static final ResourceCondition NEVER_LOADED = ResourceConditions.alwaysFalse();
 
 	@Override
 	public void addJsonKeySortOrders(JsonKeySortOrderCallback callback) {

fabric-resource-conditions-api-v1/src/main/java/net/fabricmc/fabric/api/resource/conditions/v1/ResourceConditions.java

@@ -30,6 +30,7 @@
 import net.fabricmc.fabric.impl.resource.conditions.conditions.AllModsLoadedResourceCondition;
 import net.fabricmc.fabric.impl.resource.conditions.conditions.AndResourceCondition;
 import net.fabricmc.fabric.impl.resource.conditions.conditions.AnyModsLoadedResourceCondition;
+import net.fabricmc.fabric.impl.resource.conditions.conditions.FalseResourceCondition;
 import net.fabricmc.fabric.impl.resource.conditions.conditions.FeaturesEnabledResourceCondition;
 import net.fabricmc.fabric.impl.resource.conditions.conditions.NotResourceCondition;
 import net.fabricmc.fabric.impl.resource.conditions.conditions.OrResourceCondition;
@@ -83,6 +84,13 @@ public static ResourceCondition alwaysTrue() {
 		return new TrueResourceCondition();
 	}
 
+	/**
+	 * A condition that always passes. Has ID {@code fabric:false}.
+	 */
+	public static ResourceCondition alwaysFalse() {
+		return new FalseResourceCondition();
+	}
+
 	/**
 	 * A condition that passes if {@code condition} does not pass. Has ID {@code fabric:not} and
 	 * takes one field, {@code value}, which is a resource condition.

fabric-resource-conditions-api-v1/src/main/java/net/fabricmc/fabric/impl/resource/conditions/DefaultResourceConditionTypes.java

@@ -25,6 +25,7 @@
 import net.fabricmc.fabric.impl.resource.conditions.conditions.AllModsLoadedResourceCondition;
 import net.fabricmc.fabric.impl.resource.conditions.conditions.AndResourceCondition;
 import net.fabricmc.fabric.impl.resource.conditions.conditions.AnyModsLoadedResourceCondition;
+import net.fabricmc.fabric.impl.resource.conditions.conditions.FalseResourceCondition;
 import net.fabricmc.fabric.impl.resource.conditions.conditions.FeaturesEnabledResourceCondition;
 import net.fabricmc.fabric.impl.resource.conditions.conditions.NotResourceCondition;
 import net.fabricmc.fabric.impl.resource.conditions.conditions.OrResourceCondition;
@@ -34,6 +35,7 @@
 
 public class DefaultResourceConditionTypes {
 	public static final ResourceConditionType<TrueResourceCondition> TRUE = createResourceConditionType("true", TrueResourceCondition.CODEC);
+	public static final ResourceConditionType<FalseResourceCondition> FALSE = createResourceConditionType("false", FalseResourceCondition.CODEC);
 	public static final ResourceConditionType<NotResourceCondition> NOT = createResourceConditionType("not", NotResourceCondition.CODEC);
 	public static final ResourceConditionType<OrResourceCondition> OR = createResourceConditionType("or", OrResourceCondition.CODEC);
 	public static final ResourceConditionType<AndResourceCondition> AND = createResourceConditionType("and", AndResourceCondition.CODEC);

fabric-resource-conditions-api-v1/src/main/java/net/fabricmc/fabric/impl/resource/conditions/ResourceConditionsImpl.java

@@ -50,6 +50,7 @@ public final class ResourceConditionsImpl implements ModInitializer {
 	@Override
 	public void onInitialize() {
 		ResourceConditions.register(DefaultResourceConditionTypes.TRUE);
+		ResourceConditions.register(DefaultResourceConditionTypes.FALSE);
 		ResourceConditions.register(DefaultResourceConditionTypes.NOT);
 		ResourceConditions.register(DefaultResourceConditionTypes.AND);
 		ResourceConditions.register(DefaultResourceConditionTypes.OR);

fabric-resource-conditions-api-v1/src/main/java/net/fabricmc/fabric/impl/resource/conditions/conditions/FalseResourceCondition.java

@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2016, 2017, 2018, 2019 FabricMC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package net.fabricmc.fabric.impl.resource.conditions.conditions;
+
+import com.mojang.serialization.MapCodec;
+import org.jspecify.annotations.Nullable;
+
+import net.minecraft.resources.RegistryOps;
+
+import net.fabricmc.fabric.api.resource.conditions.v1.ResourceCondition;
+import net.fabricmc.fabric.api.resource.conditions.v1.ResourceConditionType;
+import net.fabricmc.fabric.impl.resource.conditions.DefaultResourceConditionTypes;
+
+public class FalseResourceCondition implements ResourceCondition {
+	public static final MapCodec<FalseResourceCondition> CODEC = MapCodec.unit(FalseResourceCondition::new);
+
+	@Override
+	public ResourceConditionType<?> getType() {
+		return DefaultResourceConditionTypes.FALSE;
+	}
+
+	@Override
+	public boolean test(RegistryOps.@Nullable RegistryInfoLookup registryInfo) {
+		return false;
+	}
+}

fabric-resource-conditions-api-v1/src/test/java/net/fabricmc/fabric/test/resource/conditions/ResourceConditionsUnitTest.java

@@ -64,7 +64,7 @@ static void beforeAll() {
 	@Test
 	public void logics() {
 		ResourceCondition alwaysTrue = ResourceConditions.alwaysTrue();
-		ResourceCondition alwaysFalse = ResourceConditions.not(alwaysTrue);
+		ResourceCondition alwaysFalse = ResourceConditions.alwaysFalse();
 		ResourceCondition trueAndTrue = ResourceConditions.and(alwaysTrue, alwaysTrue);
 		ResourceCondition trueAndFalse = ResourceConditions.and(alwaysTrue, alwaysFalse);
 		ResourceCondition emptyAnd = ResourceConditions.and();