minecraft-kajetans-mod/src/main/java/me/km/networking/PlayerHeadGui.java

package me.km.networking;

import java.util.TreeMap;
import net.minecraft.client.Minecraft;
import net.minecraft.client.gui.Gui;
import net.minecraft.client.network.NetworkPlayerInfo;
import net.minecraft.util.ResourceLocation;
import net.minecraftforge.fml.relauncher.Side;
import net.minecraftforge.fml.relauncher.SideOnly;

@SideOnly(Side.CLIENT)
public class PlayerHeadGui extends Gui
{
    public final static PlayerHeadGui INSTANCE = new PlayerHeadGui(Minecraft.getMinecraft());

    private class HeadData
    {
        private final int x;
        private final int y;
        private final int scale;
        private final ResourceLocation rl;
        
        public HeadData(int x, int y, int scale, ResourceLocation rl)
        {
            this.x = x;
            this.y = y;
            this.scale = scale;
            this.rl = rl;
        }
        
        public void paint(Minecraft mc)
        {
            mc.getTextureManager().bindTexture(rl);
            Gui.drawScaledCustomSizeModalRect(x, y, 8, 8, 8, 8, 8 * scale, 8 * scale, 64.0F, 64.0F);
            Gui.drawScaledCustomSizeModalRect(x, y, 40, 8, 8, 8, 8 * scale, 8 * scale, 64.0F, 64.0F);
        }
    }
    
    private final TreeMap<Integer, HeadData> data;
    private final Minecraft mc;
    
    public PlayerHeadGui(Minecraft mc)
    {
        this.mc = mc;
        this.data = new TreeMap<>(); 
    }
    
    public void add(int i, int x, int y, int scale, String name)
    {
        NetworkPlayerInfo info = this.mc.player.connection.getPlayerInfo(name);
        if(info != null)
        {
            data.put(i, new HeadData(x, y, scale, info.getLocationSkin()));
        }
    }
    
    public void remove(int i)
    {
        data.remove(i);
    }
    
    public void clear()
    {
        data.clear();
    }
    
    public void paint()
    {
        data.values().forEach(head -> head.paint(mc));
    }
}