NoCheatPlus/NCPCompatCB2763/src/main/java/fr/neatmonster/nocheatplus/compat/cb2763/MCAccessCB2763.java

/*
 * This program is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version.
 *
 *   This program 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 General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package fr.neatmonster.nocheatplus.compat.cb2763;

import net.minecraft.server.v1_5_R3.AxisAlignedBB;
import net.minecraft.server.v1_5_R3.Block;
import net.minecraft.server.v1_5_R3.DamageSource;
import net.minecraft.server.v1_5_R3.EntityComplexPart;
import net.minecraft.server.v1_5_R3.EntityPlayer;
import net.minecraft.server.v1_5_R3.MobEffectList;

import org.bukkit.Bukkit;
import org.bukkit.Material;
import org.bukkit.World;
import org.bukkit.command.CommandMap;
import org.bukkit.craftbukkit.v1_5_R3.CraftServer;
import org.bukkit.craftbukkit.v1_5_R3.entity.CraftEntity;
import org.bukkit.craftbukkit.v1_5_R3.entity.CraftPlayer;
import org.bukkit.entity.Entity;
import org.bukkit.entity.LivingEntity;
import org.bukkit.entity.Player;

import fr.neatmonster.nocheatplus.compat.AlmostBoolean;
import fr.neatmonster.nocheatplus.compat.MCAccess;
import fr.neatmonster.nocheatplus.utilities.BlockCache;
import fr.neatmonster.nocheatplus.utilities.ReflectionUtil;

public class MCAccessCB2763 implements MCAccess{

    /**
     * Constructor to let it fail.
     */
    public MCAccessCB2763(){
        getCommandMap();
        ReflectionUtil.checkMembers("net.minecraft.server.v1_5_R3.", new String[]{"Entity" , "dead"});
        ReflectionUtil.checkMethodReturnTypesNoArgs(net.minecraft.server.v1_5_R3.Block.class, 
                new String[]{"u", "v", "w", "x", "y", "z"}, double.class);
    }

    @Override
    public String getMCVersion() {
        // 1_5_R3
        return "1.5.2";
    }

    @Override
    public String getServerVersionTag() {
        return "CB2763";
    }

    @Override
    public CommandMap getCommandMap() {
        return ((CraftServer) Bukkit.getServer()).getCommandMap();
    }

    @Override
    public BlockCache getBlockCache(final World world) {
        return new BlockCacheCB2763(world);
    }

    @Override
    public double getHeight(final Entity entity) {
        final net.minecraft.server.v1_5_R3.Entity mcEntity = ((CraftEntity) entity).getHandle();
        final double entityHeight = Math.max(mcEntity.length, Math.max(mcEntity.height, mcEntity.boundingBox.e - mcEntity.boundingBox.b));
        if (entity instanceof LivingEntity) {
            return Math.max(((LivingEntity) entity).getEyeHeight(), entityHeight);
        } else return entityHeight;
    }

    @Override
    public AlmostBoolean isBlockSolid(final int id) {
        final Block block = Block.byId[id];
        if (block == null || block.material == null) return AlmostBoolean.MAYBE;
        else return AlmostBoolean.match(block.material.isSolid());
    }

    @Override
    public AlmostBoolean isBlockLiquid(final int id) {
        final Block block = Block.byId[id];
        if (block == null || block.material == null) return AlmostBoolean.MAYBE;
        else return AlmostBoolean.match(block.material.isLiquid());
    }

    @Override
    public double getWidth(final Entity entity) {
        return ((CraftEntity) entity).getHandle().width;
    }

    @Override
    public AlmostBoolean isIllegalBounds(final Player player) {
        final EntityPlayer entityPlayer = ((CraftPlayer) player).getHandle();
        if (entityPlayer.dead) return AlmostBoolean.NO;
        // TODO: Does this need a method call for the "real" box? Might be no problem during moving events, though.
        final AxisAlignedBB box = entityPlayer.boundingBox;
        if (!entityPlayer.isSleeping()){
            // This can not really test stance but height of bounding box.
            final double dY = Math.abs(box.e - box.b);
            if (dY > 1.8) return AlmostBoolean.YES; // dY > 1.65D || 
            if (dY < 0.1D && entityPlayer.length >= 0.1) return AlmostBoolean.YES;
        }
        return AlmostBoolean.MAYBE;
    }

    @Override
    public double getJumpAmplifier(final Player player) {
        final EntityPlayer mcPlayer = ((CraftPlayer) player).getHandle();

        if (mcPlayer.hasEffect(MobEffectList.JUMP)) return mcPlayer.getEffect(MobEffectList.JUMP).getAmplifier();
        else return Double.NEGATIVE_INFINITY;
    }

    @Override
    public double getFasterMovementAmplifier(final Player player) {
        final EntityPlayer mcPlayer = ((CraftPlayer) player).getHandle();
        if (mcPlayer.hasEffect(MobEffectList.FASTER_MOVEMENT)) return mcPlayer.getEffect(MobEffectList.FASTER_MOVEMENT).getAmplifier();
        else return Double.NEGATIVE_INFINITY;
    }

    @Override
    public int getInvulnerableTicks(final Player player) {
        return ((CraftPlayer) player).getHandle().invulnerableTicks;
    }

    @Override
    public void setInvulnerableTicks(final Player player, final int ticks) {
        ((CraftPlayer) player).getHandle().invulnerableTicks = ticks;
    }

    @Override
    public void dealFallDamage(final Player player, final double damage) {
        ((CraftPlayer) player).getHandle().damageEntity(DamageSource.FALL, (int) Math.round(damage));
    }

    @Override
    public boolean isComplexPart(final Entity entity) {
        return ((CraftEntity) entity).getHandle() instanceof EntityComplexPart;
    }

    @Override
    public boolean shouldBeZombie(final Player player) {
        final EntityPlayer mcPlayer = ((CraftPlayer) player).getHandle();
        return !mcPlayer.dead && mcPlayer.getHealth() <= 0 ;
    }

    @Override
    public void setDead(final Player player, final int deathTicks) {
        final EntityPlayer mcPlayer = ((CraftPlayer) player).getHandle();
        mcPlayer.deathTicks = deathTicks;
        mcPlayer.dead = true;
    }

    @Override
    public boolean hasGravity(final Material mat) {
        // TODO: TEST: return mat.hasGravity();
        switch(mat){
            case SAND:
            case GRAVEL:
                return true;
            default:
                return false;
        }
    }

    @Override
    public AlmostBoolean dealFallDamageFiresAnEvent() {
        return AlmostBoolean.NO;
    }

    //	@Override
    //	public void correctDirection(final Player player) {
    //		final EntityPlayer mcPlayer = ((CraftPlayer) player).getHandle();
    //		// Main direction.
    //		mcPlayer.yaw = LocUtil.correctYaw(mcPlayer.yaw);
    //		mcPlayer.pitch = LocUtil.correctPitch(mcPlayer.pitch);
    //		// Consider setting the lastYaw here too.
    //	}

}