com.crowsofwar.avatar.common.data.AbilityData.java Source code

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Here is the source code for com.crowsofwar.avatar.common.data.AbilityData.java

Source

/* 
  This file is part of AvatarMod.
    
  AvatarMod 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.
      
  AvatarMod 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 AvatarMod. If not, see <http://www.gnu.org/licenses/>.
*/

package com.crowsofwar.avatar.common.data;

import com.crowsofwar.avatar.common.bending.BendingAbility;
import com.crowsofwar.avatar.common.bending.BendingManager;

import io.netty.buffer.ByteBuf;
import net.minecraft.nbt.NBTTagCompound;

/**
 * Represents saveable data about an ability. These are not singletons; there is
 * as many instances as required for each player data.
 * 
 * @author CrowsOfWar
 */
public class AbilityData {

    private final AvatarPlayerData data;
    private final BendingAbility ability;
    private float xp;

    public AbilityData(AvatarPlayerData data, BendingAbility ability) {
        this.data = data;
        this.ability = ability;
        this.xp = 0;
    }

    public BendingAbility getAbility() {
        return ability;
    }

    public float getXp() {
        return xp;
    }

    /**
     * Sets the XP level to the given amount, clamping from 0-100. Will also
     * save the AvatarPlayerData. Does not sync new XP.
     */
    public void setXp(float xp) {
        if (xp == this.xp)
            return;
        if (xp < 0)
            xp = 0;
        if (xp > 100)
            xp = 100;
        this.xp = xp;
        data.saveChanges();
        data.getNetworker().markChanged(AvatarPlayerData.KEY_ABILITY_DATA, data.abilityData());
    }

    /**
     * Add XP to this ability data. However, the added experience will be
     * multiplied by a number to add exponential progression. Also syncs the new
     * XP.
     */
    public void addXp(float xp) {
        xp *= 1 - 0.95 * Math.sqrt(this.xp / 100);
        if (xp == 0)
            return;
        setXp(this.xp + xp);
        data.sync();
    }

    public void readFromNbt(NBTTagCompound nbt) {
        xp = nbt.getFloat("Xp");
    }

    public void writeToNbt(NBTTagCompound nbt) {
        nbt.setFloat("Xp", xp);
    }

    public void toBytes(ByteBuf buf) {
        buf.writeInt(ability.getId()); // ability ID read from createFromBytes
        buf.writeFloat(xp);
    }

    private void fromBytes(ByteBuf buf) {
        xp = buf.readFloat();
    }

    /**
     * Reads ability data from the network.
     * 
     * @return The ability data with correct ability and XP, but null if invalid
     *         ability ID (does not log errors)
     */
    public static AbilityData createFromBytes(ByteBuf buf, AvatarPlayerData data) {
        int abilityId = buf.readInt();
        BendingAbility ability = BendingManager.getAbility(abilityId);
        if (ability == null) {
            return null;
        } else {
            AbilityData abilityData = new AbilityData(data, ability);
            abilityData.fromBytes(buf);
            return abilityData;
        }
    }

}