[BornHuman]

Use 'OnPlayerKeyStateChange' (wiki link: https://sampwiki.blast.hk/wiki/OnPlayerKeyStateChange)

Here's an example

PHP код:

public OnPlayerKeyStateChange(playerid, newkeys, oldkeys)
{
    if(GetPVarInt(playerid, "InAnimation") >= 1 && (newkeys & KEY_SPRINT) && !(oldkeys & KEY_SPRINT))
    {
        if(GetPVarInt(playerid, "LoopingAnim") >= 1) StopLoopingAnim(playerid);
        else 
        {
            ClearAnimations(playerid);
            DeletePVar(playerid, "InAnimation");
        }
        TextDrawHideForPlayer(playerid,AnimationHelper);
    }
}