yueh
99 lines
2.8 KiB
Java
99 lines
2.8 KiB
Java
/*
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* This file is part of Applied Energistics 2.
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* Copyright (c) 2013 - 2014, AlgorithmX2, All rights reserved.
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*
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* Applied Energistics 2 is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Applied Energistics 2 is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with Applied Energistics 2. If not, see <http://www.gnu.org/licenses/lgpl>.
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*/
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package appeng.integration.modules.waila.part;
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import net.minecraft.block.Block;
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import net.minecraft.entity.player.EntityPlayer;
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import net.minecraft.entity.player.EntityPlayerMP;
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import net.minecraft.util.MovingObjectPosition;
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import net.minecraft.util.Vec3;
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import net.minecraft.world.World;
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/**
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* Tracer for players hitting blocks
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*
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* @author thatsIch
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* @version rv2
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* @since rv2
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*/
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public final class Tracer
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{
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/**
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* Trace view of players to blocks.
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* Ignore all which are out of reach.
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*
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* @param world word of block
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* @param player player viewing block
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* @param x x pos of block
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* @param y y pos of block
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* @param z z pos of block
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*
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* @return trace movement. Can be null
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*/
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public MovingObjectPosition retraceBlock( World world, EntityPlayerMP player, int x, int y, int z )
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{
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Block block = world.getBlock( x, y, z );
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Vec3 headVec = this.getCorrectedHeadVec( player );
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Vec3 lookVec = player.getLook( 1.0F );
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double reach = this.getBlockReachDistance_server( player );
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Vec3 endVec = headVec.addVector( lookVec.xCoord * reach, lookVec.yCoord * reach, lookVec.zCoord * reach );
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return block.collisionRayTrace( world, x, y, z, headVec, endVec );
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}
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/**
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* Gets the view point of a player
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*
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* @param player player with head
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*
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* @return view point of player
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*/
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private Vec3 getCorrectedHeadVec( EntityPlayer player )
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{
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Vec3 v = Vec3.createVectorHelper( player.posX, player.posY, player.posZ );
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if( player.worldObj.isRemote )
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{
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// compatibility with eye height changing mods
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v.yCoord += player.getEyeHeight() - player.getDefaultEyeHeight();
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}
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else
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{
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v.yCoord += player.getEyeHeight();
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if( player instanceof EntityPlayerMP && player.isSneaking() )
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{
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v.yCoord -= 0.08;
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}
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}
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return v;
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}
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/**
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* @param player multi-player player
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*
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* @return block reach distance of player
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*/
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private double getBlockReachDistance_server( EntityPlayerMP player )
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{
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return player.theItemInWorldManager.getBlockReachDistance();
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}
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}
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