using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using System;

[System.Serializable]
public class MovementPattern {
    public static Dictionary<string, MovementPattern> patterns;
    public static void Init() {
        TextAsset anims = Resources.Load<TextAsset>("Animations");
        Debug.Log(anims);
        patterns = new Dictionary<string, MovementPattern>();
        string[] lines = anims.text.Split('\n');

        MovementPattern pt = new MovementPattern();

        for (int i = 0; i < lines.Length; i++) {
            string line = lines[i];
            if (line.Length == 0) { continue; }
            if (line[0] == '#') { continue; }
            if (line[0] == ':') {
                //Declaration of a new movement Pattern
                pt = new MovementPattern();
                patterns.Add(line.Substring(1), pt);
                Debug.Log("Added new pattern: " + line);
            } else {
                try {
                    //This might be position information
                    string[] content = line.Split(',');
                    if (content.Length < 3) { continue; }
                    float t = float.Parse(content[0]);
                    float x = float.Parse(content[1]);
                    float y = float.Parse(content[2]);
                    pt.x.AddKey(t, x);
                    pt.y.AddKey(t, y);
                    Debug.Log("Added key to active pattern: " + line);

                } catch (Exception e) {
                    Debug.Log(e);
                    Debug.Log("Error loading key: " + line);
                    //Something went wrong? Skip.
                    continue;
                }
                //*/
            }



        }


    }

    public MovementPattern() {
        x = new AnimationCurve();
        y = new AnimationCurve();
    }

    public AnimationCurve x;
    public AnimationCurve y;

    public float timeLength { get { return x[x.length-1].time; } }

    public Vector2 Evaluate(float time) {
        return new Vector2(x.Evaluate(time), y.Evaluate(time));
    }

}


public class EnemyMover : MonoBehaviour {
    public MovementPattern currentPattern;
    public float timeout = 0;
    public Vector3 currentAnchor;

    void Start() {
        currentAnchor = transform.position;
    }

    void Update() {
        timeout += Time.deltaTime;
        if (timeout >= currentPattern.timeLength) {
            timeout = 0;
            //currentPattern = NextPattern();
        } else {
            Vector2 offset = currentPattern.Evaluate(timeout);
        }
    }

}