[JamesC]

pawn Код:

for( new i; i < MAX_PLAYERS; i++ )
{
    if( i == playerid ) continue; // Skip if the playerid equals i
    
    if( IsPlayerInRangeOfPoint( i, 1.0, x, y, z ) )
    {
        new
            Float: playerHealth // Health / Armour are floats!
        ;
        
        GetPlayerHealth( i, playerHealth );
        SetPlayerHealth( i, playerHealth - 10.0 );
        
        format( string, sizeof( string ), "You have been punched by %s", pName );
        SendClientMessage( i, 0xFFFF00AA, string );
        
        PlayerPlaySound( i, 1130, 0.0, 0.0, 0.0 );
        PlayerPlaySound( playerid, 1130, 0.0, 0.0, 0.0 );
        
        break; // Can't punch more than one person.
    }
}

Untested.

EDIT

You may also want to use:

pawn Код:

if( newkeys & KEY_FIRE )

So that other keys ( W / S / A / D ) can be pressed while pressing KEY_FIRE.