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/*
* Copyright (C) 2013 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.example.android.toongame;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.AnimatorSet;
import android.animation.ObjectAnimator;
import android.animation.PropertyValuesHolder;
import android.animation.ValueAnimator;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Color;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnTouchListener;
import android.view.ViewGroup;
import android.view.ViewTreeObserver;
import android.view.animation.AccelerateInterpolator;
import android.view.animation.DecelerateInterpolator;
import android.view.animation.LinearInterpolator;
import android.widget.Button;
/**
* This application shows various cartoon animation techniques in the context of
* a larger application, to show how such animations might be used to create a more
* interactive, fun, and engaging experience.
*
* This main activity launches a sub-activity when the Play button is clicked. The
* main action in this master activity is bouncing the Play button in, randomly
* bouncing it while waiting for input, and animating its press and click behaviors
* when the user interacts with it.
*
* Watch the associated video for this demo on the DevBytes channel of developer.android.com
* or on the DevBytes playlist in the androiddevelopers channel on YouTube at
* https://www.youtube.com/playlist?list=PLWz5rJ2EKKc_XOgcRukSoKKjewFJZrKV0.
*/
public class ToonGame extends Activity {
Button mStarter;
ViewGroup mContainer;
private static final AccelerateInterpolator sAccelerator = new AccelerateInterpolator();
private static final DecelerateInterpolator sDecelerator = new DecelerateInterpolator();
private static final LinearInterpolator sLinearInterpolator = new LinearInterpolator();
static long SHORT_DURATION = 100;
static long MEDIUM_DURATION = 200;
static long REGULAR_DURATION = 300;
static long LONG_DURATION = 500;
private static float sDurationScale = 1f;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
overridePendingTransition(0, 0);
setContentView(R.layout.activity_toon_game);
mStarter = (Button) findViewById(R.id.startButton);
mContainer = (ViewGroup) findViewById(R.id.container);
mStarter.setOnTouchListener(funButtonListener);
mStarter.animate().setDuration(100);
}
@Override
protected void onResume() {
super.onResume();
mContainer.setScaleX(1);
mContainer.setScaleY(1);
mContainer.setAlpha(1);
mStarter.setVisibility(View.INVISIBLE);
mContainer.getViewTreeObserver().addOnPreDrawListener(mOnPreDrawListener);
}
@Override
protected void onPause() {
super.onPause();
mStarter.removeCallbacks(mSquishRunnable);
}
private OnTouchListener funButtonListener = new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
mStarter.animate().scaleX(.8f).scaleY(.8f).setInterpolator(sDecelerator);
mStarter.setTextColor(Color.CYAN);
mStarter.removeCallbacks(mSquishRunnable);
mStarter.setPressed(true);
break;
case MotionEvent.ACTION_MOVE:
float x = event.getX();
float y = event.getY();
boolean isInside = (x > 0 && x < mStarter.getWidth() &&
y > 0 && y < mStarter.getHeight());
if (mStarter.isPressed() != isInside) {
mStarter.setPressed(isInside);
}
break;
case MotionEvent.ACTION_UP:
if (mStarter.isPressed()) {
mStarter.performClick();
mStarter.setPressed(false);
} else {
mStarter.animate().scaleX(1).scaleY(1).setInterpolator(sAccelerator);
}
mStarter.setTextColor(Color.BLUE);
break;
}
return true;
}
};
private Runnable mSquishRunnable = new Runnable() {
public void run() {
squishyBounce(mStarter, 0,
mContainer.getHeight() - mStarter.getTop() - mStarter.getHeight(),
0, .5f, 1.5f);
}
};
public void play(View view) {
mContainer.animate().scaleX(5).scaleY(5).alpha(0).setDuration(LONG_DURATION).
setInterpolator(sLinearInterpolator).
withEndAction(new Runnable() {
@Override
public void run() {
mStarter.postOnAnimation(new Runnable() {
public void run() {
Intent intent = new Intent(ToonGame.this,
PlayerSetupActivity.class);
startActivity(intent);
overridePendingTransition(0, 0);
}
});
}
});
view.removeCallbacks(mSquishRunnable);
}
private ViewTreeObserver.OnPreDrawListener mOnPreDrawListener =
new ViewTreeObserver.OnPreDrawListener() {
@Override
public boolean onPreDraw() {
mContainer.getViewTreeObserver().removeOnPreDrawListener(this);
mContainer.postDelayed(new Runnable() {
public void run() {
// Drop in the button from off the top of the screen
mStarter.setVisibility(View.VISIBLE);
mStarter.setY(-mStarter.getHeight());
squishyBounce(mStarter,
-(mStarter.getTop() + mStarter.getHeight()),
mContainer.getHeight() - mStarter.getTop() -
mStarter.getHeight(),
0, .5f, 1.5f);
}
}, 500);
return true;
}
};
private void squishyBounce(final View view, final float startTY, final float bottomTY,
final float endTY, final float squash, final float stretch) {
view.setPivotX(view.getWidth() / 2);
view.setPivotY(view.getHeight());
PropertyValuesHolder pvhTY = PropertyValuesHolder.ofFloat(View.TRANSLATION_Y,
startTY, bottomTY);
PropertyValuesHolder pvhSX = PropertyValuesHolder.ofFloat(View.SCALE_X, .7f);
PropertyValuesHolder pvhSY = PropertyValuesHolder.ofFloat(View.SCALE_Y, 1.2f);
ObjectAnimator downAnim = ObjectAnimator.ofPropertyValuesHolder(view, pvhTY, pvhSX, pvhSY);
downAnim.setInterpolator(sAccelerator);
pvhTY = PropertyValuesHolder.ofFloat(View.TRANSLATION_Y, bottomTY, endTY);
pvhSX = PropertyValuesHolder.ofFloat(View.SCALE_X, 1);
pvhSY = PropertyValuesHolder.ofFloat(View.SCALE_Y, 1);
ObjectAnimator upAnim = ObjectAnimator.ofPropertyValuesHolder(view, pvhTY, pvhSX, pvhSY);
upAnim.setInterpolator(sDecelerator);
pvhSX = PropertyValuesHolder.ofFloat(View.SCALE_X, stretch);
pvhSY = PropertyValuesHolder.ofFloat(View.SCALE_Y, squash);
ObjectAnimator stretchAnim = ObjectAnimator.ofPropertyValuesHolder(view, pvhSX, pvhSY);
stretchAnim.setRepeatCount(1);
stretchAnim.setRepeatMode(ValueAnimator.REVERSE);
stretchAnim.setInterpolator(sDecelerator);
AnimatorSet set = new AnimatorSet();
set.playSequentially(downAnim, stretchAnim, upAnim);
set.setDuration(getDuration(SHORT_DURATION));
set.start();
set.addListener(new AnimatorListenerAdapter() {
public void onAnimationEnd(Animator animation) {
view.postDelayed(mSquishRunnable, (long) (500 + Math.random() * 2000));
}
});
}
public static long getDuration(long baseDuration) {
return (long) (baseDuration * sDurationScale);
}
}
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