equivalent-exchange-3/src/main/java/com/pahimar/ee3/client/handler/KeyInputEventHandler.java

package com.pahimar.ee3.client.handler;

import com.pahimar.ee3.client.settings.Keybindings;
import com.pahimar.ee3.network.PacketHandler;
import com.pahimar.ee3.network.message.MessageKeyPressed;
import com.pahimar.ee3.reference.Key;
import com.pahimar.ee3.util.IKeyBound;
import cpw.mods.fml.client.FMLClientHandler;
import cpw.mods.fml.common.eventhandler.SubscribeEvent;
import cpw.mods.fml.common.gameevent.InputEvent;
import cpw.mods.fml.relauncher.Side;
import cpw.mods.fml.relauncher.SideOnly;
import net.minecraft.entity.player.EntityPlayer;
import net.minecraft.item.ItemStack;

@SideOnly(Side.CLIENT)
public class KeyInputEventHandler {
    private static Key getPressedKeybinding() {
        if (Keybindings.charge.getIsKeyPressed()) {
            return Key.CHARGE;
        } else if (Keybindings.extra.getIsKeyPressed()) {
            return Key.EXTRA;
        } else if (Keybindings.release.getIsKeyPressed()) {
            return Key.RELEASE;
        } else if (Keybindings.toggle.getIsKeyPressed()) {
            return Key.TOGGLE;
        }

        return Key.UNKNOWN;
    }

    @SubscribeEvent
    public void handleKeyInputEvent(InputEvent.KeyInputEvent event) {
        if (getPressedKeybinding() == Key.UNKNOWN) {
            return;
        }

        if (FMLClientHandler.instance().getClient().inGameHasFocus) {
            if (FMLClientHandler.instance().getClientPlayerEntity() != null) {
                EntityPlayer entityPlayer
                    = FMLClientHandler.instance().getClientPlayerEntity();

                if (entityPlayer.getCurrentEquippedItem() != null) {
                    ItemStack currentlyEquippedItemStack
                        = entityPlayer.getCurrentEquippedItem();

                    if (currentlyEquippedItemStack.getItem() instanceof IKeyBound) {
                        if (entityPlayer.worldObj.isRemote) {
                            PacketHandler.INSTANCE.sendToServer(
                                new MessageKeyPressed(getPressedKeybinding())
                            );
                        } else {
                            ((IKeyBound) currentlyEquippedItemStack.getItem())
                                .doKeyBindingAction(
                                    entityPlayer,
                                    currentlyEquippedItemStack,
                                    getPressedKeybinding()
                                );
                        }
                    }
                }
            }
        }
    }
}