Java tutorial
/* * Copyright (C) 2014 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 info.bartowski.easteregg; import android.animation.TimeAnimator; import android.annotation.TargetApi; import android.content.Context; import android.content.res.Resources; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Matrix; import android.graphics.Outline; import android.graphics.Paint; import android.graphics.Path; import android.graphics.PorterDuff; import android.graphics.Rect; import android.graphics.drawable.Drawable; import android.graphics.drawable.GradientDrawable; import android.os.Build; import android.support.v4.graphics.drawable.DrawableCompat; import android.support.v4.view.ViewCompat; import android.util.AttributeSet; import android.util.Log; import android.view.Gravity; import android.view.KeyEvent; import android.view.MotionEvent; import android.view.View; import android.view.ViewOutlineProvider; import android.view.animation.DecelerateInterpolator; import android.widget.FrameLayout; import android.widget.ImageView; import android.widget.TextView; import java.util.ArrayList; public class LLand extends FrameLayout { public static final String TAG = "LLand"; public static final boolean DEBUG = Log.isLoggable(TAG, Log.DEBUG); public static final boolean DEBUG_DRAW = false; // DEBUG public static final void L(String s, Object... objects) { if (DEBUG) { Log.d(TAG, String.format(s, objects)); } } public static final boolean AUTOSTART = true; public static final boolean HAVE_STARS = true; public static final float DEBUG_SPEED_MULTIPLIER = 1f; // 0.1f; public static final boolean DEBUG_IDDQD = false; final static int[] POPS = { // resid // spinny! R.drawable.pop_belt, 0, R.drawable.pop_droid, 0, R.drawable.pop_pizza, 1, R.drawable.pop_stripes, 0, R.drawable.pop_swirl, 1, R.drawable.pop_vortex, 1, R.drawable.pop_vortex2, 1, }; private static class Params { public float TRANSLATION_PER_SEC; public int OBSTACLE_SPACING, OBSTACLE_PERIOD; public int BOOST_DV; public int PLAYER_HIT_SIZE; public int PLAYER_SIZE; public int OBSTACLE_WIDTH, OBSTACLE_STEM_WIDTH; public int OBSTACLE_GAP; public int OBSTACLE_MIN; public int BUILDING_WIDTH_MIN, BUILDING_WIDTH_MAX; public int BUILDING_HEIGHT_MIN; public int CLOUD_SIZE_MIN, CLOUD_SIZE_MAX; public int STAR_SIZE_MIN, STAR_SIZE_MAX; public int G; public int MAX_V; public float SCENERY_Z, OBSTACLE_Z, PLAYER_Z, PLAYER_Z_BOOST, HUD_Z; public Params(Resources res) { TRANSLATION_PER_SEC = res.getDimension(R.dimen.lland_translation_per_sec); OBSTACLE_SPACING = res.getDimensionPixelSize(R.dimen.lland_obstacle_spacing); OBSTACLE_PERIOD = (int) (OBSTACLE_SPACING / TRANSLATION_PER_SEC); BOOST_DV = res.getDimensionPixelSize(R.dimen.lland_boost_dv); PLAYER_HIT_SIZE = res.getDimensionPixelSize(R.dimen.lland_player_hit_size); PLAYER_SIZE = res.getDimensionPixelSize(R.dimen.lland_player_size); OBSTACLE_WIDTH = res.getDimensionPixelSize(R.dimen.lland_obstacle_width); OBSTACLE_STEM_WIDTH = res.getDimensionPixelSize(R.dimen.lland_obstacle_stem_width); OBSTACLE_GAP = res.getDimensionPixelSize(R.dimen.lland_obstacle_gap); OBSTACLE_MIN = res.getDimensionPixelSize(R.dimen.lland_obstacle_height_min); BUILDING_HEIGHT_MIN = res.getDimensionPixelSize(R.dimen.lland_building_height_min); BUILDING_WIDTH_MIN = res.getDimensionPixelSize(R.dimen.lland_building_width_min); BUILDING_WIDTH_MAX = res.getDimensionPixelSize(R.dimen.lland_building_width_max); CLOUD_SIZE_MIN = res.getDimensionPixelSize(R.dimen.lland_cloud_size_min); CLOUD_SIZE_MAX = res.getDimensionPixelSize(R.dimen.lland_cloud_size_max); STAR_SIZE_MIN = res.getDimensionPixelSize(R.dimen.lland_star_size_min); STAR_SIZE_MAX = res.getDimensionPixelSize(R.dimen.lland_star_size_max); G = res.getDimensionPixelSize(R.dimen.lland_G); MAX_V = res.getDimensionPixelSize(R.dimen.lland_max_v); SCENERY_Z = res.getDimensionPixelSize(R.dimen.lland_scenery_z); OBSTACLE_Z = res.getDimensionPixelSize(R.dimen.lland_obstacle_z); PLAYER_Z = res.getDimensionPixelSize(R.dimen.lland_player_z); PLAYER_Z_BOOST = res.getDimensionPixelSize(R.dimen.lland_player_z_boost); HUD_Z = res.getDimensionPixelSize(R.dimen.lland_hud_z); } } private TimeAnimator mAnim; private TextView mScoreField; private View mSplash; private Player mDroid; private ArrayList<Obstacle> mObstaclesInPlay = new ArrayList<Obstacle>(); private float t, dt; private int mScore; private float mLastPipeTime; // in sec private int mWidth, mHeight; private boolean mAnimating, mPlaying; private boolean mFrozen; // after death, a short backoff private boolean mFlipped; private int mTimeOfDay; private static final int DAY = 0, NIGHT = 1, TWILIGHT = 2, SUNSET = 3; private static final int[][] SKIES = { { 0xFFc0c0FF, 0xFFa0a0FF }, // DAY { 0xFF000010, 0xFF000000 }, // NIGHT { 0xFF000040, 0xFF000010 }, // TWILIGHT { 0xFFa08020, 0xFF204080 }, // SUNSET }; private static Params PARAMS; public LLand(Context context) { this(context, null); } public LLand(Context context, AttributeSet attrs) { this(context, attrs, 0); } public LLand(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); setFocusable(true); PARAMS = new Params(getResources()); mTimeOfDay = irand(0, SKIES.length); } @Override public boolean willNotDraw() { return !DEBUG; } public int getGameWidth() { return mWidth; } public int getGameHeight() { return mHeight; } public float getGameTime() { return t; } public float getLastTimeStep() { return dt; } public void setScoreField(TextView tv) { mScoreField = tv; if (tv != null) { ViewCompat.setTranslationZ(tv, PARAMS.HUD_Z); if (!(mAnimating && mPlaying)) { tv.setTranslationY(-500); } } } public void setSplash(View v) { mSplash = v; } @Override protected void onSizeChanged(int w, int h, int oldw, int oldh) { stop(); reset(); if (AUTOSTART) { start(false); } } final float hsv[] = { 0, 0, 0 }; private void reset() { L("reset"); final Drawable sky = new GradientDrawable(GradientDrawable.Orientation.BOTTOM_TOP, SKIES[mTimeOfDay]); sky.setDither(true); setBackground(sky); mFlipped = frand() > 0.5f; setScaleX(mFlipped ? -1 : 1); setScore(0); int i = getChildCount(); while (i-- > 0) { final View v = getChildAt(i); if (v instanceof GameView) { removeViewAt(i); } } mObstaclesInPlay.clear(); mWidth = getWidth(); mHeight = getHeight(); boolean showingSun = (mTimeOfDay == DAY || mTimeOfDay == SUNSET) && frand() > 0.25; if (showingSun) { final Star sun = new Star(getContext()); sun.setBackground(Utility.getCompatDrawable(getContext(), R.drawable.sun)); final int w = getResources().getDimensionPixelSize(R.dimen.lland_sun_size); sun.setTranslationX(frand(w, mWidth - w)); if (mTimeOfDay == DAY) { sun.setTranslationY(frand(w, (mHeight * 0.66f))); DrawableCompat.setTint(sun.getBackground(), 0); } else { sun.setTranslationY(frand(mHeight * 0.66f, mHeight - w)); DrawableCompat.setTintMode(sun.getBackground(), PorterDuff.Mode.SRC_ATOP); DrawableCompat.setTint(sun.getBackground(), 0xC0FF8000); } addView(sun, new LayoutParams(w, w)); } if (!showingSun) { final boolean dark = mTimeOfDay == NIGHT || mTimeOfDay == TWILIGHT; final float ff = frand(); if ((dark && ff < 0.75f) || ff < 0.5f) { final Star moon = new Star(getContext()); moon.setBackground(Utility.getCompatDrawable(getContext(), R.drawable.moon)); moon.getBackground().setAlpha(dark ? 255 : 128); moon.setScaleX(frand() > 0.5 ? -1 : 1); moon.setRotation(moon.getScaleX() * frand(5, 30)); final int w = getResources().getDimensionPixelSize(R.dimen.lland_sun_size); moon.setTranslationX(frand(w, mWidth - w)); moon.setTranslationY(frand(w, mHeight - w)); addView(moon, new LayoutParams(w, w)); } } final int mh = mHeight / 6; final boolean cloudless = frand() < 0.25; final int N = 20; for (i = 0; i < N; i++) { final float r1 = frand(); final Scenery s; if (HAVE_STARS && r1 < 0.3 && mTimeOfDay != DAY) { s = new Star(getContext()); } else if (r1 < 0.6 && !cloudless) { s = new Cloud(getContext()); } else { s = new Building(getContext()); s.z = (float) i / N; ViewCompat.setTranslationZ(s, PARAMS.SCENERY_Z * (1 + s.z)); s.v = 0.85f * s.z; // buildings move proportional to their distance hsv[0] = 175; hsv[1] = 0.25f; hsv[2] = 1 * s.z; s.setBackgroundColor(Color.HSVToColor(hsv)); s.h = irand(PARAMS.BUILDING_HEIGHT_MIN, mh); } final LayoutParams lp = new LayoutParams(s.w, s.h); if (s instanceof Building) { lp.gravity = Gravity.BOTTOM; } else { lp.gravity = Gravity.TOP; final float r = frand(); if (s instanceof Star) { lp.topMargin = (int) (r * r * mHeight); } else { lp.topMargin = (int) (1 - r * r * mHeight / 2) + mHeight / 2; } } addView(s, lp); s.setTranslationX(frand(-lp.width, mWidth + lp.width)); } mDroid = new Player(getContext()); mDroid.setX(mWidth / 2); mDroid.setY(mHeight / 2); addView(mDroid, new LayoutParams(PARAMS.PLAYER_SIZE, PARAMS.PLAYER_SIZE)); mAnim = new TimeAnimator(); mAnim.setTimeListener(new TimeAnimator.TimeListener() { @Override public void onTimeUpdate(TimeAnimator timeAnimator, long t, long dt) { step(t, dt); } }); } private void setScore(int score) { mScore = score; if (mScoreField != null) mScoreField.setText(String.valueOf(score)); } private void addScore(int incr) { setScore(mScore + incr); } private void start(boolean startPlaying) { L("start(startPlaying=%s)", startPlaying ? "true" : "false"); if (startPlaying) { mPlaying = true; t = 0; // there's a sucker born every OBSTACLE_PERIOD mLastPipeTime = getGameTime() - PARAMS.OBSTACLE_PERIOD; if (mSplash != null && mSplash.getAlpha() > 0f) { ViewCompat.setTranslationZ(mSplash, PARAMS.HUD_Z); ViewCompat.animate(mSplash).alpha(0).translationZ(0).setDuration(400); mScoreField.animate().translationY(0).setInterpolator(new DecelerateInterpolator()) .setDuration(1500); } mScoreField.setTextColor(0xFFAAAAAA); mScoreField.setBackground(Utility.getCompatDrawable(getContext(), R.drawable.scorecard)); mDroid.setVisibility(View.VISIBLE); mDroid.setX(mWidth / 2); mDroid.setY(mHeight / 2); } else { mDroid.setVisibility(View.GONE); } if (!mAnimating) { mAnim.start(); mAnimating = true; } } private void stop() { if (mAnimating) { mAnim.cancel(); mAnim = null; mAnimating = false; mScoreField.setTextColor(0xFFFFFFFF); mScoreField.setBackgroundResource(R.drawable.scorecard_gameover); mTimeOfDay = irand(0, SKIES.length); // for next reset mFrozen = true; postDelayed(new Runnable() { @Override public void run() { mFrozen = false; } }, 250); } } public static final float lerp(float x, float a, float b) { return (b - a) * x + a; } public static final float rlerp(float v, float a, float b) { return (v - a) / (b - a); } public static final float clamp(float f) { return f < 0f ? 0f : f > 1f ? 1f : f; } public static final float frand() { return (float) Math.random(); } public static final float frand(float a, float b) { return lerp(frand(), a, b); } public static final int irand(int a, int b) { return (int) lerp(frand(), (float) a, (float) b); } private void step(long t_ms, long dt_ms) { t = t_ms / 1000f; // seconds dt = dt_ms / 1000f; if (DEBUG) { t *= DEBUG_SPEED_MULTIPLIER; dt *= DEBUG_SPEED_MULTIPLIER; } // 1. Move all objects and update bounds final int N = getChildCount(); int i = 0; for (; i < N; i++) { final View v = getChildAt(i); if (v instanceof GameView) { ((GameView) v).step(t_ms, dt_ms, t, dt); } } // 2. Check for altitude if (mPlaying && mDroid.below(mHeight)) { if (DEBUG_IDDQD) { poke(); } else { L("player hit the floor"); stop(); } } // 3. Check for obstacles boolean passedBarrier = false; for (int j = mObstaclesInPlay.size(); j-- > 0;) { final Obstacle ob = mObstaclesInPlay.get(j); if (mPlaying && ob.intersects(mDroid) && !DEBUG_IDDQD) { L("player hit an obstacle"); stop(); } else if (ob.cleared(mDroid)) { if (ob instanceof Stem) passedBarrier = true; mObstaclesInPlay.remove(j); } } if (mPlaying && passedBarrier) { addScore(1); } // 4. Handle edge of screen // Walk backwards to make sure removal is safe while (i-- > 0) { final View v = getChildAt(i); if (v instanceof Obstacle) { if (v.getTranslationX() + v.getWidth() < 0) { removeViewAt(i); } } else if (v instanceof Scenery) { final Scenery s = (Scenery) v; if (v.getTranslationX() + s.w < 0) { v.setTranslationX(getWidth()); } } } // 3. Time for more obstacles! if (mPlaying && (t - mLastPipeTime) > PARAMS.OBSTACLE_PERIOD) { mLastPipeTime = t; final int obstacley = (int) (Math.random() * (mHeight - 2 * PARAMS.OBSTACLE_MIN - PARAMS.OBSTACLE_GAP)) + PARAMS.OBSTACLE_MIN; final int inset = (PARAMS.OBSTACLE_WIDTH - PARAMS.OBSTACLE_STEM_WIDTH) / 2; final int yinset = PARAMS.OBSTACLE_WIDTH / 2; final int d1 = irand(0, 250); final Obstacle s1 = new Stem(getContext(), obstacley - yinset, false); addView(s1, new LayoutParams(PARAMS.OBSTACLE_STEM_WIDTH, (int) s1.h, Gravity.TOP | Gravity.LEFT)); s1.setTranslationX(mWidth + inset); s1.setTranslationY(-s1.h - yinset); ViewCompat.setTranslationZ(s1, PARAMS.OBSTACLE_Z * 0.75f); s1.animate().translationY(0).setStartDelay(d1).setDuration(250); mObstaclesInPlay.add(s1); final Obstacle p1 = new Pop(getContext(), PARAMS.OBSTACLE_WIDTH); addView(p1, new LayoutParams(PARAMS.OBSTACLE_WIDTH, PARAMS.OBSTACLE_WIDTH, Gravity.TOP | Gravity.LEFT)); p1.setTranslationX(mWidth); p1.setTranslationY(-PARAMS.OBSTACLE_WIDTH); ViewCompat.setTranslationZ(p1, PARAMS.OBSTACLE_Z); p1.setScaleX(0.25f); p1.setScaleY(0.25f); p1.animate().translationY(s1.h - inset).scaleX(1f).scaleY(1f).setStartDelay(d1).setDuration(250); mObstaclesInPlay.add(p1); final int d2 = irand(0, 250); final Obstacle s2 = new Stem(getContext(), mHeight - obstacley - PARAMS.OBSTACLE_GAP - yinset, true); addView(s2, new LayoutParams(PARAMS.OBSTACLE_STEM_WIDTH, (int) s2.h, Gravity.TOP | Gravity.LEFT)); s2.setTranslationX(mWidth + inset); s2.setTranslationY(mHeight + yinset); ViewCompat.setTranslationZ(s2, PARAMS.OBSTACLE_Z * 0.75f); s2.animate().translationY(mHeight - s2.h).setStartDelay(d2).setDuration(400); mObstaclesInPlay.add(s2); final Obstacle p2 = new Pop(getContext(), PARAMS.OBSTACLE_WIDTH); addView(p2, new LayoutParams(PARAMS.OBSTACLE_WIDTH, PARAMS.OBSTACLE_WIDTH, Gravity.TOP | Gravity.LEFT)); p2.setTranslationX(mWidth); p2.setTranslationY(mHeight); ViewCompat.setTranslationZ(p2, PARAMS.OBSTACLE_Z); p2.setScaleX(0.25f); p2.setScaleY(0.25f); p2.animate().translationY(mHeight - s2.h - yinset).scaleX(1f).scaleY(1f).setStartDelay(d2) .setDuration(400); mObstaclesInPlay.add(p2); } if (DEBUG_DRAW) invalidate(); } @Override public boolean onTouchEvent(MotionEvent ev) { if (DEBUG) L("touch: %s", ev); switch (ev.getAction()) { case MotionEvent.ACTION_DOWN: poke(); return true; case MotionEvent.ACTION_UP: unpoke(); return true; } return false; } @Override public boolean onTrackballEvent(MotionEvent ev) { if (DEBUG) L("trackball: %s", ev); switch (ev.getAction()) { case MotionEvent.ACTION_DOWN: poke(); return true; case MotionEvent.ACTION_UP: unpoke(); return true; } return false; } @Override public boolean onKeyDown(int keyCode, KeyEvent ev) { if (DEBUG) L("keyDown: %d", keyCode); switch (keyCode) { case KeyEvent.KEYCODE_DPAD_CENTER: case KeyEvent.KEYCODE_DPAD_UP: case KeyEvent.KEYCODE_SPACE: case KeyEvent.KEYCODE_ENTER: case KeyEvent.KEYCODE_BUTTON_A: poke(); return true; } return false; } @Override public boolean onKeyUp(int keyCode, KeyEvent ev) { if (DEBUG) L("keyDown: %d", keyCode); switch (keyCode) { case KeyEvent.KEYCODE_DPAD_CENTER: case KeyEvent.KEYCODE_DPAD_UP: case KeyEvent.KEYCODE_SPACE: case KeyEvent.KEYCODE_ENTER: case KeyEvent.KEYCODE_BUTTON_A: unpoke(); return true; } return false; } @Override public boolean onGenericMotionEvent(MotionEvent ev) { if (DEBUG) L("generic: %s", ev); return false; } private void poke() { L("poke"); if (mFrozen) return; if (!mAnimating) { reset(); start(true); } else if (!mPlaying) { start(true); } mDroid.boost(); if (DEBUG) { mDroid.dv *= DEBUG_SPEED_MULTIPLIER; mDroid.animate().setDuration((long) (200 / DEBUG_SPEED_MULTIPLIER)); } } private void unpoke() { L("unboost"); if (mFrozen) return; if (!mAnimating) return; mDroid.unboost(); } @Override public void onDraw(Canvas c) { super.onDraw(c); if (!DEBUG_DRAW) return; final Paint pt = new Paint(); pt.setColor(0xFFFFFFFF); final int L = mDroid.corners.length; final int N = L / 2; for (int i = 0; i < N; i++) { final int x = (int) mDroid.corners[i * 2]; final int y = (int) mDroid.corners[i * 2 + 1]; c.drawCircle(x, y, 4, pt); c.drawLine(x, y, mDroid.corners[(i * 2 + 2) % L], mDroid.corners[(i * 2 + 3) % L], pt); } pt.setStyle(Paint.Style.STROKE); pt.setStrokeWidth(getResources().getDisplayMetrics().density); final int M = getChildCount(); pt.setColor(0x8000FF00); for (int i = 0; i < M; i++) { final View v = getChildAt(i); if (v == mDroid) continue; if (!(v instanceof GameView)) continue; if (v instanceof Pop) { final Pop p = (Pop) v; c.drawCircle(p.cx, p.cy, p.r, pt); } else { final Rect r = new Rect(); v.getHitRect(r); c.drawRect(r, pt); } } pt.setColor(Color.BLACK); final StringBuilder sb = new StringBuilder("obstacles: "); for (Obstacle ob : mObstaclesInPlay) { sb.append(ob.hitRect.toShortString()); sb.append(" "); } pt.setTextSize(20f); c.drawText(sb.toString(), 20, 100, pt); } static final Rect sTmpRect = new Rect(); private interface GameView { public void step(long t_ms, long dt_ms, float t, float dt); } private class Player extends ImageView implements GameView { public float dv; private boolean mBoosting; private final float[] sHull = new float[] { 0.3f, 0f, // left antenna 0.7f, 0f, // right antenna 0.92f, 0.33f, // off the right shoulder of Orion 0.92f, 0.75f, // right hand (our right, not his right) 0.6f, 1f, // right foot 0.4f, 1f, // left foot BLUE! 0.08f, 0.75f, // sinistram 0.08f, 0.33f, // cold shoulder }; public final float[] corners = new float[sHull.length]; public Player(Context context) { super(context); setBackground(Utility.getCompatDrawable(getContext(), R.drawable.android)); DrawableCompat.setTintMode(getBackground(), PorterDuff.Mode.SRC_ATOP); DrawableCompat.setTint(getBackground(), 0xFF00FF00); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { setOutlineProvider(new ViewOutlineProvider() { @TargetApi(Build.VERSION_CODES.M) @Override public void getOutline(View view, Outline outline) { final int w = view.getWidth(); final int h = view.getHeight(); final int ix = (int) (w * 0.3f); final int iy = (int) (h * 0.2f); outline.setRect(ix, iy, w - ix, h - iy); } }); } } public void prepareCheckIntersections() { final int inset = (PARAMS.PLAYER_SIZE - PARAMS.PLAYER_HIT_SIZE) / 2; final int scale = PARAMS.PLAYER_HIT_SIZE; final int N = sHull.length / 2; for (int i = 0; i < N; i++) { corners[i * 2] = scale * sHull[i * 2] + inset; corners[i * 2 + 1] = scale * sHull[i * 2 + 1] + inset; } final Matrix m = getMatrix(); m.mapPoints(corners); } public boolean below(int h) { final int N = corners.length / 2; for (int i = 0; i < N; i++) { final int y = (int) corners[i * 2 + 1]; if (y >= h) return true; } return false; } public void step(long t_ms, long dt_ms, float t, float dt) { if (getVisibility() != View.VISIBLE) return; // not playing yet if (mBoosting) { dv = -PARAMS.BOOST_DV; } else { dv += PARAMS.G; } if (dv < -PARAMS.MAX_V) dv = -PARAMS.MAX_V; else if (dv > PARAMS.MAX_V) dv = PARAMS.MAX_V; final float y = getTranslationY() + dv * dt; setTranslationY(y < 0 ? 0 : y); setRotation(90 + lerp(clamp(rlerp(dv, PARAMS.MAX_V, -1 * PARAMS.MAX_V)), 90, -90)); prepareCheckIntersections(); } public void boost() { mBoosting = true; dv = -PARAMS.BOOST_DV; animate().cancel(); ViewCompat.animate(this).scaleX(1.25f).scaleY(1.25f).translationZ(PARAMS.PLAYER_Z_BOOST) .setDuration(100); setScaleX(1.25f); setScaleY(1.25f); } public void unboost() { mBoosting = false; animate().cancel(); ViewCompat.animate(this).scaleX(1f).scaleY(1f).translationZ(PARAMS.PLAYER_Z).setDuration(200); } } private class Obstacle extends View implements GameView { public float h; public final Rect hitRect = new Rect(); public Obstacle(Context context, float h) { super(context); setBackgroundColor(0xFFFF0000); this.h = h; } public boolean intersects(Player p) { final int N = p.corners.length / 2; for (int i = 0; i < N; i++) { final int x = (int) p.corners[i * 2]; final int y = (int) p.corners[i * 2 + 1]; if (hitRect.contains(x, y)) return true; } return false; } public boolean cleared(Player p) { final int N = p.corners.length / 2; for (int i = 0; i < N; i++) { final int x = (int) p.corners[i * 2]; if (hitRect.right >= x) return false; } return true; } @Override public void step(long t_ms, long dt_ms, float t, float dt) { setTranslationX(getTranslationX() - PARAMS.TRANSLATION_PER_SEC * dt); getHitRect(hitRect); } } private class Pop extends Obstacle { int mRotate; int cx, cy, r; public Pop(Context context, float h) { super(context, h); int idx = 2 * irand(0, POPS.length / 2); // setBackgroundResource(POPS[idx]); setBackground(Utility.getCompatDrawable(getContext(), POPS[idx])); setScaleX(frand() < 0.5f ? -1 : 1); mRotate = POPS[idx + 1] == 0 ? 0 : (frand() < 0.5f ? -1 : 1); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) { setOutlineProvider(new ViewOutlineProvider() { @TargetApi(Build.VERSION_CODES.M) @Override public void getOutline(View view, Outline outline) { final int pad = (int) (getWidth() * 0.02f); outline.setOval(pad, pad, getWidth() - pad, getHeight() - pad); } }); } } public boolean intersects(Player p) { final int N = p.corners.length / 2; for (int i = 0; i < N; i++) { final int x = (int) p.corners[i * 2]; final int y = (int) p.corners[i * 2 + 1]; if (Math.hypot(x - cx, y - cy) <= r) return true; } return false; } @Override public void step(long t_ms, long dt_ms, float t, float dt) { super.step(t_ms, dt_ms, t, dt); if (mRotate != 0) { setRotation(getRotation() + dt * 45 * mRotate); } cx = (hitRect.left + hitRect.right) / 2; cy = (hitRect.top + hitRect.bottom) / 2; r = getWidth() / 2; } } private class Stem extends Obstacle { Paint mPaint = new Paint(); Path mShadow = new Path(); boolean mDrawShadow; public Stem(Context context, float h, boolean drawShadow) { super(context, h); mDrawShadow = drawShadow; mPaint.setColor(0xFFAAAAAA); setBackground(null); } @Override public void onAttachedToWindow() { super.onAttachedToWindow(); setWillNotDraw(false); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) { setOutlineProvider(new ViewOutlineProvider() { @TargetApi(Build.VERSION_CODES.M) @Override public void getOutline(View view, Outline outline) { outline.setRect(0, 0, getWidth(), getHeight()); } }); } } @Override public void onDraw(Canvas c) { final int w = c.getWidth(); final int h = c.getHeight(); final GradientDrawable g = new GradientDrawable(); g.setOrientation(GradientDrawable.Orientation.LEFT_RIGHT); g.setGradientCenter(w * 0.75f, 0); g.setColors(new int[] { 0xFFFFFFFF, 0xFFAAAAAA }); g.setBounds(0, 0, w, h); g.draw(c); if (!mDrawShadow) return; mShadow.reset(); mShadow.moveTo(0, 0); mShadow.lineTo(w, 0); mShadow.lineTo(w, PARAMS.OBSTACLE_WIDTH / 2 + w * 1.5f); mShadow.lineTo(0, PARAMS.OBSTACLE_WIDTH / 2); mShadow.close(); c.drawPath(mShadow, mPaint); } } private class Scenery extends FrameLayout implements GameView { public float z; public float v; public int h, w; public Scenery(Context context) { super(context); } @Override public void step(long t_ms, long dt_ms, float t, float dt) { setTranslationX(getTranslationX() - PARAMS.TRANSLATION_PER_SEC * dt * v); } } private class Building extends Scenery { public Building(Context context) { super(context); w = irand(PARAMS.BUILDING_WIDTH_MIN, PARAMS.BUILDING_WIDTH_MAX); h = 0; // will be setup later, along with z ViewCompat.setTranslationZ(this, PARAMS.SCENERY_Z); } } private class Cloud extends Scenery { public Cloud(Context context) { super(context); setBackground(frand() < 0.01f ? Utility.getCompatDrawable(getContext(), R.drawable.cloud_off) : Utility.getCompatDrawable(getContext(), R.drawable.cloud)); getBackground().setAlpha(0x40); w = h = irand(PARAMS.CLOUD_SIZE_MIN, PARAMS.CLOUD_SIZE_MAX); z = 0; v = frand(0.15f, 0.5f); } } private class Star extends Scenery { public Star(Context context) { super(context); setBackground(Utility.getCompatDrawable(context, R.drawable.star)); w = h = irand(PARAMS.STAR_SIZE_MIN, PARAMS.STAR_SIZE_MAX); v = z = 0; } } }