i cant get the user input to move my sprite

Summary:

i use this code for input

i cant get the user input to move my sprite

Darkmage1000 (guest) 18 Dec 2011 03:19

KeyboardState newState = Keyboard.GetState();
if (oldState.IsKeyUp(Keys.Up) && newState.IsKeyDown(Keys.Up))
{ MySpritePosition.Y -= 1; }
if (oldState.IsKeyUp(Keys.Down) && newState.IsKeyDown(Keys.Down))
{ MySpritePosition.Y += 1; }
if (oldState.IsKeyUp(Keys.Left) && newState.IsKeyDown(Keys.Left))
{MySpritePosition.X -= 1;}
if (oldState.IsKeyUp(Keys.Right) && newState.IsKeyDown(Keys.Right))
{MySpritePosition.X += 1;}

Re: i cant get the user input to move my sprite

rbwhitaker 18 Dec 2011 08:13

All of that code looks right. It's probably something somewhere else. I have two thoughts, and hopefully, one of them will be right. If not, we can try something else.

First, do you have the line in there that pushes newState into the oldState variable? When you're done updating, you should do something like this:

// Put this AFTER all the rest of your updating code.
oldState = newState;

Otherwise, oldState will never contain anything useful, and your conditions will never be met.

The second possibility is, what are you doing to draw your sprite? If you aren't using MySpritePosition, then that would cause the problem you're looking at.

Do either of those help at all?

ssaunders (guest) 25 Mar 2012 04:02

I can't post links, but xnadevelopment .com has a fabulous tutorial on just that (including how to shoot fireballs :) )
xnadevelopment
.com/tutorials
/thewizard
/theWizard