package com xamgore particles import android content Context import an

package com.xamgore.particles;

import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.view.MotionEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceView;

public class GameSurfaceView extends SurfaceView
        implements SurfaceHolder.Callback {

    // TODO: Move to Graphics
    private static final int BACKGROUND_COLOR = 0xff191919; // #222

    private Paint paint;
    private DrawingThread thread;
    private final SurfaceHolder mSurfaceHolder;
    private final ParticleSystem particleSystem;



    public GameSurfaceView(Context context) {
        super(context);

        mSurfaceHolder = getHolder();
        mSurfaceHolder.addCallback(this);
        particleSystem = new ParticleSystem();
    }


    @Override
    public void surfaceCreated(SurfaceHolder holder) {
        paint = new Paint(Paint.ANTI_ALIAS_FLAG);
        paint.setStyle(Paint.Style.FILL);

        thread = new DrawingThread();
        thread.keepRunning = true;
        thread.start();
    }

    @Override
    public void surfaceChanged(SurfaceHolder holder, int format, int newW, int newH) {
        particleSystem.makeOutburst(newW, newH);
    }

    @Override
    public void surfaceDestroyed(SurfaceHolder holder) {
        thread.keepRunning = false;
        boolean retry = true;
        while (retry) {
            try {
                thread.join();
                retry = false;

                paint = null;
                thread = null;
            } catch (InterruptedException e) {}
        }
    }

    @Override
    protected void onDraw(Canvas canvas) {
        // Fill background
        paint.setColor(BACKGROUND_COLOR);
        canvas.drawPaint(paint);

        // Draw particles
        particleSystem.draw(canvas);

        // Draw FPS
        paint.setColor(Color.WHITE);
        canvas.drawText(Fps.getFpsAsString(), 10, 10, paint);
        canvas.drawText(String.valueOf(particleSystem.count()), 50, 10, paint);
    }


    @Override
    public boolean onTouchEvent(MotionEvent event) {
        // ACTION_DOWN || ACTION_POINTER_DOWN || ACTION_MOVE
        if (event.getAction() >= 0 && event.getAction() < 3)
            synchronized (mSurfaceHolder) {
                boolean multiTouch = event.getPointerCount() > 1;

                // Создаём вспышки под каждым пальцем
                for (int i = 0; i < event.getPointerCount(); i++)
                    particleSystem.makeFlush(
                            event.getX(i), event.getY(i), multiTouch
                    );

                return true;
            }

        /*
         * XXX: Или тут лучше сразу возвращать return true; ???
         */
        return super.onTouchEvent(event);
    }



    private class DrawingThread extends Thread {
        public boolean keepRunning = true;

        @Override
        public void run() {
            Canvas c;

            while (keepRunning) {
                Fps.startMeasuringDelay();
                synchronized (mSurfaceHolder) {
                    particleSystem.update();
                }
                c = null;

                try {
                    c = mSurfaceHolder.lockCanvas();
                    if (c != null) {
                        synchronized (mSurfaceHolder) {
                            onDraw(c);
                        }
                    }
                } finally {
                    if (c != null)
                        mSurfaceHolder.unlockCanvasAndPost(c);
                }

                try {
                    Thread.sleep(Fps.getDelay());
                } catch (InterruptedException ex) {
                    Thread.currentThread().interrupt();
                }
            }
        }
    }
}