/*
 * This file is part of LiquidBounce (https://github.com/CCBlueX/LiquidBounce)
 *
 * Copyright (c) 2015 - 2026 CCBlueX
 *
 * LiquidBounce 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.
 *
 * LiquidBounce 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 LiquidBounce. If not, see <https://www.gnu.org/licenses/>.
 */

package net.ccbluex.liquidbounce.features.module.modules.movement.liquidwalk.modes

import net.ccbluex.liquidbounce.config.types.group.Mode
import net.ccbluex.liquidbounce.config.types.group.ModeValueGroup
import net.ccbluex.liquidbounce.event.events.BlockShapeEvent
import net.ccbluex.liquidbounce.event.events.PacketEvent
import net.ccbluex.liquidbounce.event.events.TransferOrigin
import net.ccbluex.liquidbounce.event.handler
import net.ccbluex.liquidbounce.features.module.modules.movement.liquidwalk.ModuleLiquidWalk
import net.ccbluex.liquidbounce.features.module.modules.movement.liquidwalk.ModuleLiquidWalk.collidesWithAnythingElse
import net.ccbluex.liquidbounce.features.module.modules.movement.liquidwalk.ModuleLiquidWalk.standingOnWater
import net.ccbluex.liquidbounce.utils.block.isBlockAtPosition
import net.ccbluex.liquidbounce.utils.entity.box
import net.minecraft.network.protocol.game.ServerboundMovePlayerPacket
import net.minecraft.world.level.block.LiquidBlock
import net.minecraft.world.phys.shapes.Shapes

/**
 * @anticheat Verus
 * @anticheatVersion b3901 and b3896
 * @testedOn anticheat-test.com and eu.loyisa.cn
 */
internal object LiquidWalkVerusB3901 : Mode("VerusB3901") {

    override val parent: ModeValueGroup<Mode>
        get() = ModuleLiquidWalk.modes

    private var spoof = true

    @Suppress("unused")
    val shapeHandler = handler<BlockShapeEvent> { event ->
        if (mc.options.keyShift.isDown || player.fallDistance > 3.0f || player.isOnFire) {
            return@handler
        }

        if (event.state.block is LiquidBlock && !player.box.isBlockAtPosition { it is LiquidBlock }) {
            event.shape = Shapes.block()
        }
    }

    val packetHandler = handler<PacketEvent> { event ->
        val packet = event.packet

        if (event.origin == TransferOrigin.OUTGOING && packet is ServerboundMovePlayerPacket) {
            if (!mc.options.keyShift.isDown &&
                !player.isInWater &&
                standingOnWater() &&
                !collidesWithAnythingElse()
                ) {
                packet.onGround = spoof
                spoof = !spoof
            } else {
                spoof = true
            }
        }
    }
}
