iParachuting v0.1

/*
                   iParachute v0.1
                    By irinel1996
                Thanks to FireCat too
*/
#include <mapandreas>
forward OnPlayerOpenParachute(playerid, altitude);
stock IsPlayerSkyDiving(playerid)
{
    new idx=GetPlayerAnimationIndex(playerid);
    if(idx==1134||idx==961||idx==962||idx==958||idx==959||
    idx==971||idx==963||idx==976||idx==978||idx==965) return 1;
    return 0;
}
stock GetPlayerParachuteState(playerid)
{
    new idx=GetPlayerAnimationIndex(playerid);
    if(idx==963||idx==976||idx==978||idx==965) return 1; //Opened
    else if(idx==971) return 2; //Opening
    return 0; //Closed
}
stock GetPlayerAltitude(playerid, tipo=0)
{
    new Float:x,Float:y,Float:z;
    switch(tipo)
    {
        case 0:
        {
            if(IsPlayerSkyDiving(playerid))
            {
                GetPlayerPos(playerid,x,y,z);
                new Float:r=GetPointZPos(x,y);
                new Float:r2 = z-r;
                return floatround(r2,floatround_round);
            }
        }
        case 1:
        {
            GetPlayerPos(playerid,x,y,z);
            new Float:r=GetPointZPos(x,y);
            new Float:r2 = z-r;
            return floatround(r2,floatround_round);
        }
    }
    return 0;
}
public OnPlayerKeyStateChange(playerid, newkeys, oldkeys)
{
    if(GetPlayerState(playerid) == PLAYER_STATE_ONFOOT){
        if(GetPlayerWeapon(playerid) == 46){
            if(newkeys & KEY_FIRE){
                if(GetPlayerParachuteState(playerid) == 0 || GetPlayerParachuteState(playerid) == 2){
                    CallLocalFunction("OnPlayerOpenParachute","dd",playerid,GetPlayerAltitude(playerid,1));
    }   }   }   }
    CallLocalFunction("isd_OnPlayerKeyStateChange","iii",playerid,newkeys,oldkeys);
}
#if defined _ALS_OnPlayerKeyStateChange
    #undef OnPlayerKeyStateChange
#else
    #define _ALS_OnPlayerKeyStateChange
#endif
#define OnPlayerKeyStateChange isd_OnPlayerKeyStateChange
forward OnPlayerKeyStateChange(playerid, newkeys, oldkeys);