Java tutorial
/* * Copyright 2014 MovingBlocks * * 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 org.terasology.machines.world; import com.google.common.collect.Maps; import com.google.gson.JsonObject; import org.terasology.asset.AssetUri; import org.terasology.math.Rotation; import org.terasology.math.Side; import org.terasology.math.Yaw; import org.terasology.world.block.Block; import org.terasology.world.block.BlockUri; import org.terasology.world.block.family.BlockBuilderHelper; import org.terasology.world.block.family.BlockFamily; import org.terasology.world.block.family.BlockFamilyFactory; import org.terasology.world.block.family.RegisterBlockFamilyFactory; import org.terasology.world.block.loader.BlockDefinition; import java.util.Map; @RegisterBlockFamilyFactory("surfacePlacement") public class SurfacePlacementFamilyFactory implements BlockFamilyFactory { private static final String TOP = "top"; private static final String SIDES = "sides"; private static final String BOTTOM = "bottom"; @Override public BlockFamily createBlockFamily(BlockBuilderHelper blockBuilder, AssetUri blockDefUri, BlockDefinition blockDefinition, JsonObject blockDefJson) { Map<Side, Block> blockMap = Maps.newEnumMap(Side.class); BlockDefinition topDef = blockBuilder.getBlockDefinitionForSection(blockDefJson, TOP); if (topDef != null) { Block block = blockBuilder.constructSimpleBlock(blockDefUri, topDef); block.setDirection(Side.TOP); blockMap.put(Side.TOP, block); } BlockDefinition sideDef = blockBuilder.getBlockDefinitionForSection(blockDefJson, SIDES); if (sideDef != null) { blockMap.put(Side.FRONT, blockBuilder.constructTransformedBlock(blockDefUri, sideDef, Rotation.rotate(Yaw.NONE))); blockMap.put(Side.LEFT, blockBuilder.constructTransformedBlock(blockDefUri, sideDef, Rotation.rotate(Yaw.CLOCKWISE_90))); blockMap.put(Side.BACK, blockBuilder.constructTransformedBlock(blockDefUri, sideDef, Rotation.rotate(Yaw.CLOCKWISE_180))); blockMap.put(Side.RIGHT, blockBuilder.constructTransformedBlock(blockDefUri, sideDef, Rotation.rotate(Yaw.CLOCKWISE_270))); } BlockDefinition bottomDef = blockBuilder.getBlockDefinitionForSection(blockDefJson, BOTTOM); if (bottomDef != null) { Block block = blockBuilder.constructSimpleBlock(blockDefUri, bottomDef); block.setDirection(Side.BOTTOM); blockMap.put(Side.BOTTOM, block); } return new SurfacePlacementFamily(new BlockUri(blockDefUri.getModuleName(), blockDefUri.getAssetName()), blockMap, blockDefinition.categories); } }