Lots more moved

src/main/java/appeng/attributes/MEAttributes.java

@@ -0,0 +1,66 @@
+/*
+ * This file is part of Applied Energistics 2.
+ * Copyright (c) 2013 - 2014, AlgorithmX2, All rights reserved.
+ *
+ * Applied Energistics 2 is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Applied Energistics 2 is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with Applied Energistics 2.  If not, see <http://www.gnu.org/licenses/lgpl>.
+ */
+
+package appeng.attributes;
+
+import alexiil.mc.lib.attributes.Attribute;
+import alexiil.mc.lib.attributes.Attributes;
+import alexiil.mc.lib.attributes.SearchOptions;
+import appeng.api.storage.IStorageMonitorableAccessor;
+import appeng.parts.AEBasePart;
+import net.minecraft.block.entity.BlockEntity;
+import net.minecraft.util.math.BlockPos;
+import net.minecraft.util.math.ChunkPos;
+import net.minecraft.util.math.Direction;
+import net.minecraft.world.World;
+
+/**
+ * Utility class that holds various attributes, both by AE2 and other Mods.
+ */
+public final class MEAttributes {
+
+    private MEAttributes() {
+    }
+
+    public static Attribute<IStorageMonitorableAccessor> STORAGE_MONITORABLE_ACCESSOR
+            = Attributes.createDefaulted(IStorageMonitorableAccessor.class, new NullMENetworkAccessor());
+
+    public static <T> T getFirstAttributeOnSide(Attribute<T> attribute, BlockEntity be, Direction side) {
+        World world = be.getWorld();
+        if (world == null) {
+            return null;
+        }
+
+        return attribute.getFirstOrNull(world, be.getPos().offset(side), SearchOptions.inDirection(side.getOpposite()));
+    }
+
+    // Convenience function to get an attribute of the block that is in front of a part
+    public static <T> T getAttributeInFrontOfPart(Attribute<T> attribute, AEBasePart part) {
+        BlockEntity self = part.getHost().getTile();
+        Direction direction = part.getSide().getFacing();
+        final World w = self.getWorld();
+        BlockPos neighborPos = self.getPos().offset(direction);
+        // Do not force-load a neighboring chunk for this.
+        ChunkPos chunkPos = new ChunkPos(neighborPos);
+        if (!w.getChunkManager().isChunkLoaded(chunkPos.x, chunkPos.z)) {
+            return null;
+        }
+        return attribute.getFirstOrNull(w, neighborPos, SearchOptions.inDirection(direction));
+    }
+
+}