/*
 * This file is part of ViaForge - https://github.com/FlorianMichael/ViaForge
 * Copyright (C) 2021-2024 FlorianMichael/EnZaXD <florian.michael07@gmail.com> and contributors
 *
 * 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 de.florianmichael.viaforge.mixin.impl.fixes;

import com.mojang.authlib.GameProfile;
import com.viaversion.viaversion.api.protocol.version.ProtocolVersion;
import de.florianmichael.viaforge.common.ViaForgeCommon;
import net.minecraft.client.entity.AbstractClientPlayer;
import net.minecraft.client.entity.EntityPlayerSP;
import net.minecraft.world.World;
import org.spongepowered.asm.mixin.Mixin;
import org.spongepowered.asm.mixin.Shadow;
import org.spongepowered.asm.mixin.injection.At;
import org.spongepowered.asm.mixin.injection.Redirect;

@Mixin(EntityPlayerSP.class)
public class MixinEntityPlayerSP extends AbstractClientPlayer {

    @Shadow private boolean prevOnGround;

    public MixinEntityPlayerSP(World worldIn, GameProfile playerProfile) {
        super(worldIn, playerProfile);
    }

    @Redirect(method = "onUpdateWalkingPlayer", at = @At(value = "FIELD", target = "Lnet/minecraft/client/entity/EntityPlayerSP;prevOnGround:Z", ordinal = 0))
    public boolean emulateIdlePacket(EntityPlayerSP instance) {
        if (ViaForgeCommon.getManager().getTargetVersion().olderThanOrEqualTo(ProtocolVersion.v1_8)) {
            // <= 1.8 spams the idle packet instead of only sending it when the ground state changes
            // So we invert the original logic:
            // if (prevOnGround != onGround) sendPacket
            // To be like:
            // if (!onGround != onGround) sendPacket
            // Which is the same as:
            // if (true) sendPacket
            return !onGround;
        }
        return prevOnGround;
    }

}