Question

Im having a problem in my code when 3 keys are pressed at the same time.
When I press

• Up + Right + Space: moves and the object fires
• Up + left + Space: moves but doesn’t fire
• Down +Right + Space: moves but doesn’t fire
• Down + Left + Space: moves but doesn’t fire
• All other 2 key combinations are fine.

here is my code:

if (newkbState.IsKeyDown(Keys.Up))
    player.MoveFwd();
else if (newkbState.IsKeyDown(Keys.Down))
    player.MoveBkwd();
else
    player.StopMoving();

if (newkbState.IsKeyDown(Keys.Left))
    player.TurnLeft();
else if (newkbState.IsKeyDown(Keys.Right))
    player.TurnRight();
else
    player.StopTurning();

if (newkbState.IsKeyDown(Keys.Space))
    player.Fire();

Answer 1

Rather basic problem – but does the keyboard support having more than 3 keys at the same time? “Ghosting” as its called is not unheard of in older keyboards:

https://www.microsoft.com/appliedsciences/antighostingexplained.mspx

Are you 100% sure its your code?