fabric-climbable-api-v1 - Re-implementing minecraft:climbable on 1.15 (#558)

build.gradle

@@ -12,7 +12,7 @@ plugins {
 def ENV = System.getenv()
 
 class Globals {
-	static def baseVersion = "0.6.0"
+	static def baseVersion = "0.7.0"
 	static def mcVersion = "1.15.2"
 	static def yarnVersion = "+build.1"
 }

fabric-climbable-api-v1/build.gradle

@@ -0,0 +1,7 @@
+archivesBaseName = "fabric-climbable-api-v1"
+version = getSubprojectVersion(project, "1.0.0")
+
+dependencies {
+	compile project(path: ':fabric-api-base', configuration: 'dev')
+	compile project(path: ':fabric-tag-extensions-v0', configuration: 'dev')
+}

fabric-climbable-api-v1/src/main/java/net/fabricmc/fabric/impl/climbable/FabricClimbableImpl.java

@@ -0,0 +1,30 @@
+/*
+ * 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.climbable;
+
+import net.minecraft.block.Block;
+import net.minecraft.tag.Tag;
+import net.minecraft.util.Identifier;
+
+import net.fabricmc.fabric.api.tag.TagRegistry;
+
+public class FabricClimbableImpl {
+	public static final Tag<Block> CLIMBABLE = TagRegistry.block(new Identifier("minecraft", "climbable"));
+
+	private FabricClimbableImpl() {
+	}
+}

fabric-climbable-api-v1/src/main/java/net/fabricmc/fabric/mixin/climbable/MixinLivingEntity.java

@@ -0,0 +1,43 @@
+/*
+ * 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.mixin.climbable;
+
+import net.fabricmc.fabric.impl.climbable.FabricClimbableImpl;
+import net.minecraft.block.BlockState;
+import net.minecraft.entity.Entity;
+import net.minecraft.entity.EntityType;
+import net.minecraft.entity.LivingEntity;
+import net.minecraft.world.World;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+import org.spongepowered.asm.mixin.injection.callback.LocalCapture;
+
+@Mixin(LivingEntity.class)
+public abstract class MixinLivingEntity extends Entity {
+	public MixinLivingEntity(EntityType<?> type, World world) {
+		super(type, world);
+	}
+
+	@Inject(method = "isClimbing", at = @At(value = "INVOKE", target = "Lnet/minecraft/block/BlockState;getBlock()Lnet/minecraft/block/Block;"), cancellable = true, locals = LocalCapture.CAPTURE_FAILHARD)
+	public void onIsClimbing(CallbackInfoReturnable<Boolean> info, BlockState state) {
+		if (state.matches(FabricClimbableImpl.CLIMBABLE)) {
+			info.setReturnValue(true);
+		}
+	}
+}

fabric-climbable-api-v1/src/main/resources/fabric-climbable-api-v1.mixins.json

@@ -0,0 +1,11 @@
+{
+  "required": true,
+  "package": "net.fabricmc.fabric.mixin.climbable",
+  "compatibilityLevel": "JAVA_8",
+  "mixins": [
+    "MixinLivingEntity"
+  ],
+  "injectors": {
+    "defaultRequire": 1
+  }
+}

fabric-climbable-api-v1/src/main/resources/fabric.mod.json

@@ -0,0 +1,27 @@
+{
+  "schemaVersion": 1,
+  "id": "fabric-climbable-api-v1",
+  "name": "Fabric Climbable API (v1)",
+  "version": "${version}",
+  "environment": "*",
+  "license": "Apache-2.0",
+  "icon": "assets/fabric-climbable-api-v1/icon.png",
+  "contact": {
+    "homepage": "https://fabricmc.net",
+    "irc": "irc://irc.esper.net:6667/fabric",
+    "issues": "https://github.com/FabricMC/fabric/issues",
+    "sources": "https://github.com/FabricMC/fabric"
+  },
+  "authors": [
+    "FabricMC"
+  ],
+  "depends": {
+    "fabricloader": ">=0.4.0",
+    "fabric-tag-extensions-v0": ">=0.1.3",
+    "minecraft": "<1.16-"
+  },
+  "description": "Re-implements the minecraft:climbable tag from 1.16+ back in 1.15",
+  "mixins": [
+    "fabric-climbable-api-v1.mixins.json"
+  ]
+}

settings.gradle

@@ -16,6 +16,7 @@ include 'fabric-api-base'
 
 include 'fabric-biomes-v1'
 include 'fabric-blockrenderlayer-v1'
+include 'fabric-climbable-api-v1'
 include 'fabric-commands-v0'
 include 'fabric-containers-v0'
 include 'fabric-content-registries-v0'