/*
 * ============================================================================
 *
 *  Zombie:Reloaded
 *
 *  File:          jumpboost.inc
 *  Type:          Module
 *  Description:   Modified jump vector magnitudes.
 *
 *  Copyright (C) 2009  Greyscale, Richard Helgeby
 *
 *  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/>.
 *
 * ============================================================================
 */

/**
 * Client is jumping.
 * 
 * @param client    The client index.
 */
JumpBoostOnClientJumpPost(client)
{
    // Get class jump multipliers.
    new Float:distancemultiplier = ClassGetJumpDistance(client);
    new Float:heightmultiplier = ClassGetJumpHeight(client);
    
    // If both are set to 1.0, then stop here to save some work.
    if (distancemultiplier == 1.0 && heightmultiplier == 1.0)
    {
        return;
    }
    
    new Float:vecVelocity[3];
    
    // Get client's current velocity.
    ToolsClientVelocity(client, vecVelocity, false);
    
    // Only apply horizontal multiplier if it's not a bhop.
    if (!JumpBoostIsBHop(vecVelocity))
    {
        // Apply horizontal multipliers to jump vector.
        vecVelocity[0] *= distancemultiplier;
        vecVelocity[1] *= distancemultiplier;
    }
    
    // Apply height multiplier to jump vector.
    vecVelocity[2] *= heightmultiplier;
    
    // Set new velocity.
    ToolsClientVelocity(client, vecVelocity, true, false);
}

/**
 * This function detects excessive bunnyhopping.
 * Note: This ONLY catches bunnyhopping that is worse than CS:S already allows.
 * 
 * @param vecVelocity   The velocity of the client jumping.
 * @return              True if the client is bunnyhopping, false if not.
 */
stock bool:JumpBoostIsBHop(const Float:vecVelocity[])
{
    // If bunnyhop protection is disabled, then stop.
    new bool:bunnyhopprotect = GetConVarBool(g_hCvarsList[CVAR_JUMPBOOST_BHOP_PROTECT]);
    if (!bunnyhopprotect)
    {
        return false;
    }
    
    // Calculate the magnitude of jump on the xy plane.
    new Float:magnitude = SquareRoot(Pow(vecVelocity[0], 2.0) + Pow(vecVelocity[1], 2.0));
    
    // Return true if the magnitude exceeds the max.
    new Float:bunnyhopmax = GetConVarFloat(g_hCvarsList[CVAR_JUMPBOOST_BHOP_MAX]);
    return (magnitude > bunnyhopmax);
}