CarJump - Samp

//CarJump Commands//

new bool:carjump[MAX_PLAYERS];


public OnPlayerConnect(playerid) return carjump[playerid] = false;
public OnPlayerCommandText(playerid, cmdtext[])
{
    if(strcmp(cmd, "/Carjump",true) == 0 || strcmp(cmd, "/cj",true) == 0 && IsPlayerAdmin(playerid)){
        if(carjump[playerid] == false){
        carjump[playerid] = true;
        SendClientMessage(playerid,0xFFFFFF,"The carjump is {FF0000}Open {FFFFFF}now.");
        }else{
        carjump[playerid] = false;
        SendClientMessage(playerid,0xFFFFFF,"The carjump is {FF0000}Close {FFFFFF}now.");}
        return 1;}
    return 0;
}
public OnPlayerKeyStateChange(playerid, newkeys, oldkeys)
{
    if(IsKeyJustDown(KEY_FIRE,newkeys,oldkeys) || IsKeyJustDown(128,newkeys,oldkeys) && IsPlayerAdmin(playerid) && carjump[playerid] == true){
        new vehicleid = GetPlayerVehicleID(playerid), Float:x, Float:y, Float:z;
        GetVehicleVelocity(vehicleid, x, y, z);SetVehicleVelocity(vehicleid, x, y, z+0.3);}
    return 1;
}
IsKeyJustDown(key,newkeys,oldkeys)
{
    if((newkeys & key) && !(oldkeys & key)) return 1;
    return 0;
}