Moving Animated Sprites

[fryedrycestyle]

Hey guys,

I've just recently purchased the 2D Toolkit, and am pretty impressed so far! However, I'm a bit stuck with something.
My issue is that I have a sprite that I can move around with WASD. When not moving, there is an idle animation. The sprite can move in 8 directions, however there are only animations for the up,down,left,and right. My goal is to have the player face up if W+D or W+A is pressed, and down if S+A or S+D is pressed. However, I'm not quite sure how to do this. In addition, when the player lets go of say the up key and starts walking right or left, I'd like the frame to change to be right or left.

Right now I do my movement in a method called move() which is called by the player's Update() method.

Here is the code, which clearly doesn't work as intended, nor does it even attempt to currently make the player face up/down when moving diagonally.

Code: [Select]

// Player Movement
void move() {

//  UP
if (Input.GetKey(KeyCode.W))
{
direction = 0;
this.transform.position = new Vector3(this.transform.position.x, this.transform.position.y + 1, 0);
}

//  LEFT
if (Input.GetKey(KeyCode.A))
{
direction = 1;
this.transform.position = new Vector3(this.transform.position.x - 1, this.transform.position.y, 0);
}

// DOWN
if (Input.GetKey(KeyCode.S))
{
direction = 2;
this.transform.position = new Vector3(this.transform.position.x, this.transform.position.y - 1, 0);
}

//  RIGHT
if (Input.GetKey(KeyCode.D))
{
direction = 3;
this.transform.position = new Vector3(this.transform.position.x + 1, this.transform.position.y, 0);
}

// IDLE

if (Input.GetKeyUp(KeyCode.W) || Input.GetKeyUp(KeyCode.A) ||
Input.GetKeyUp(KeyCode.S) || Input.GetKeyUp(KeyCode.D))
{
pSprite.Play("idle");
pSprite.animationCompleteDelegate = null;
walk = false;
}

// WALKING ANIMATIONS

if (Input.GetKeyDown(KeyCode.W))
{
pSprite.Play("walk_up");
pSprite.animationCompleteDelegate = null;
walk = true;
}



if (Input.GetKeyDown(KeyCode.A))
{
pSprite.Play("walk_left");
pSprite.animationCompleteDelegate = null;
walk = true;
}


if (Input.GetKeyDown(KeyCode.S))
{
pSprite.Play("walk_down");
pSprite.animationCompleteDelegate = null;
walk = true;
}


if (Input.GetKeyDown(KeyCode.D))
{
pSprite.Play("walk_right");
pSprite.animationCompleteDelegate = null;
walk = true;
}


}
I also have an attack animation which plays, which is why the direction variable is primarily used (so the delegate knows which direction to resume going to while attacking when moving).

Right now when you press S+D and then release one of the keys to move either down or right, the idle animation plays while moving.

Any help would be appreciated. If anything is unclear, let me know!

[unikronsoftware]

If you're doing something like this, why not maintain state independently to the animations & keypresses? It looks like you're almost doing this already.

Eg. (horrible pseudocode, but hopefully you get the idea).

Code: [Select]

void ProcessInput() {
Vector2 moveDirection = Vector2.zero;
if (Input.GetKey(KeyCode.W)) moveDirection.y = 1; // note its using GetKey, so it triggers every frame as long as the key is held down
else if (Input.GetKey(KeyCode.D)) moveDirection.x = 1;
else ...
// now moveDirection contains the direction vector
}

void SwitchAnimation(string clipName) {
    if (!anim.Playing || (anim.Playing && anim.CurrentClip.name != clipName))
            anim.Play(clipName);
}

void UpdateAnimations {
    if (moveDireciton == Vector2.zero) SwitchAnimation("idle");
    else if (moveDirection == new Vector2(1, 0)) Switchanimation("left");
    ...
}

This should make it a lot easier to handle attacks, etc. as you know at any time what direction the character is facing. As the animation code is also independent to the direction code, you can easily make it so the animation continues on the same frame when switching direction, avoiding the animation restarting.

Hope that makes sense, if you have any further questions, feel free to ask

[fryedrycestyle]

Made lots of sense, in fact I feel bad not having thought of it! Thanks a ton though!