XNA: How to make the Vaus Spacecraft move left and right on directional keys pressed?
- by Will Marcouiller
I'm currently learning XNA per suggestion from this question's accepted answer:
Where to start writing games, any tutorials or the like?
I have then installed everything to get ready to work with XNA Game Studio 4.0.
General Objective
Writing an Arkanoid-like game. I want to make my ship move when I press either left or right keys.
Code Sample
protected override void Update(GameTime gameTime) {
// Allows the game to exit
if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed)
this.Exit();
// TODO: Add your update logic here
#if WINDOWS
if (Keyboard.GetState().IsKeyDown(Keys.Escape))
this.Exit();
else {
if (Keyboard.GetState().IsKeyDown(Keys.Left))
MoveLeft(gameTime);
}
#endif
// Move the sprite around.
BounceEnergyBall(gameTime);
base.Update(gameTime);
}
void MoveLeft(GameTime gameTime) {
// I'm not sure how to play with the Vector2 object and its position here!...
_vausSpacecraftPos /= _vausSpacecraftSpeed.X; // This line makes the spacecraft move diagnol-top-left.
}
Question
What formula shall I use, or what algorithm shall I consider to make my spaceship move as expected left and right properly?
Thanks for your thoughts! Any clue will be appreciated. I am on my learning curve though I have years of development behind me (already)!
