#include <a_players>
#include <a_samp>

#define MAX_HOPS 1

public OnPlayerKeyStateChange(playerid, newkeys, oldkeys)
{
	if(newkeys == 32)
	{
	    if(!IsPlayerInAnyVehicle(playerid))
	    {
	        new Float:x,Float:y,Float:z;
			GetPlayerVelocity(playerid,x,y,z);
	        if(GetPVarInt(playerid,"InAir") == 0 && z == 0)
	        {
				SetPVarInt(playerid,"CheckIfLanded",1);
				SetPVarInt(playerid,"InAir",1);
				SetPVarInt(playerid,"AlreadyDoubleHopped",1);
				}
			else
			{
			    if(GetPVarInt(playerid,"AlreadyDoubleHopped") == MAX_HOPS) return 1;
			    if(z <= 0)
			    {
			        SetPlayerVelocity(playerid,x,y,4);
			        SetPVarInt(playerid,"AlreadyDoubleHopped",GetPVarInt(playerid,"AlreadyDoubleHopped")+1);
					}
				else
				{
				    SetPlayerVelocity(playerid,x,y,z+4);
				    SetPVarInt(playerid,"AlreadyDoubleHopped",GetPVarInt(playerid,"AlreadyDoubleHopped")+1);
				    }
				}
			}
		}
	return 1;
}

public OnPlayerUpdate(playerid)
{
	if(GetPVarInt(playerid,"CheckIfLanded") == 1)
	{
		if(!IsPlayerInAnyVehicle(playerid))
		{
		    new Float:x,Float:y,Float:z;
		    GetPlayerVelocity(playerid,x,y,z);
		    if(z == 0)
		    {
		        if(GetPVarInt(playerid,"ZWasZeroAtLastCheck") == 1)
		        {
		            SetPVarInt(playerid,"ZWasZeroAtLastCheck",0);
		            SetPVarInt(playerid,"InAir",0);
		            return 1;
		            }
		        SetPVarInt(playerid,"ZWasZeroAtLastCheck",1);
		        if(x > 0 || x < 0 || y > 0 || y < 0)
		        {
		            return 1;
		            }
				else
				{
				    SetPVarInt(playerid,"InAir",0);
				    SetPVarInt(playerid,"AlreadyDoubleHopped",0);
				    }
				}
			}
		}
	return 1;
}