[AMXX] Color Change every Jump

/* Plugin generated by AMXX-Studio */

#include <amxmodx>
#include <engine>
#include <fakemeta_util>

#define PLUGIN "Body Color Change when jump"
#define VERSION "1.0"
#define AUTHOR "author"


public plugin_init() {
    register_plugin(PLUGIN, VERSION, AUTHOR)

    // Add your code here...
}

public client_PreThink( iPlayer )
{
    if( !is_user_alive( iPlayer ))
        return;

    if( get_user_button( iPlayer ) & IN_USE ) {
        if( get_entity_flags( iPlayer ) & FL_ONGROUND ) return

        static Float: iVelocity[ 3 ]
        entity_get_vector( iPlayer, EV_VEC_velocity, iVelocity )

        if( iVelocity[ 2 ] < 0 ) {
            iVelocity[ 2 ] = ( iVelocity[ 2 ] + 70.0 < -100 ) ? iVelocity[ 2 ] + 07.0 : -100.0
            entity_set_vector( iPlayer, EV_VEC_velocity, iVelocity )
            fm_set_rendering( iPlayer, kRenderFxGlowShell, random_num( 0, 255 ), random_num( 0, 255 ), random_num( 0, 255 ), kRenderNormal, 25 )
        }
    }
    else if( get_user_button( iPlayer ) & ~IN_USE ) fm_set_rendering( iPlayer )

    return;
}