// Spritesheet.cs
using Simuspaces.Simulation;

public class Spritesheet : SimuScriptBase
{
    public SceneObject spritesheetTarget;

    public SceneObject nextButton;
    public SceneObject previousButton;
    public SceneObject resetButton;

    // Set this to rows * columns - 1.
    // Example: 10 digit sheet = 9. A 36-frame sheet = 35.
    public int maxFrame = 9;

    public int startingFrame = 0;
    public bool wrap = true;
    public bool stopAutoAnimateOnStart = true;

    private int currentFrame;

    public override void Start()
    {
        currentFrame = ClampFrame(startingFrame);

        if (stopAutoAnimateOnStart)
            SetSpritesheetPlayback(spritesheetTarget, false, 0f, true);

        SetSpritesheetFrame(spritesheetTarget, currentFrame);

		MakeInteractable(nextButton, OnNextPressed, true, hintText: "Next frame");
		MakeInteractable(previousButton, OnPreviousPressed, true, hintText: "Previous frame");
		MakeInteractable(resetButton, OnResetPressed, true, hintText: "Reset to 0");
    }

    private void OnNextPressed(SVInteractionInfo info)
    {
        currentFrame++;

        if (currentFrame > maxFrame)
            currentFrame = wrap ? 0 : maxFrame;

        SetSpritesheetFrame(spritesheetTarget, currentFrame);
    }

    private void OnPreviousPressed(SVInteractionInfo info)
    {
        currentFrame--;

        if (currentFrame < 0)
            currentFrame = wrap ? maxFrame : 0;

        SetSpritesheetFrame(spritesheetTarget, currentFrame);
    }

    private void OnResetPressed(SVInteractionInfo info)
    {
        currentFrame = 0;
        SetSpritesheetFrame(spritesheetTarget, currentFrame);
    }

    private int ClampFrame(int frame)
    {
        if (frame < 0) return 0;
        if (frame > maxFrame) return maxFrame;
        return frame;
    }
}