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/*
* Copyright (c) 2009-2012 jMonkeyEngine
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of 'jMonkeyEngine' nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.jme3.app;
import com.jme3.app.state.AbstractAppState;
import com.jme3.app.state.AppStateManager;
import com.jme3.font.BitmapFont;
import com.jme3.font.BitmapText;
import com.jme3.renderer.RenderManager;
import com.jme3.scene.Node;
import com.jme3.scene.Spatial.CullHint;
/**
* Displays stats in SimpleApplication's GUI node or
* using the node and font parameters provided.
*
* @author Paul Speed
*/
public class StatsAppState extends AbstractAppState {
private Application app;
protected StatsView statsView;
protected boolean showSettings = true;
private boolean showFps = true;
private boolean showStats = true;
protected Node guiNode;
protected float secondCounter = 0.0f;
protected int frameCounter = 0;
protected BitmapText fpsText;
protected BitmapFont guiFont;
public StatsAppState() {
}
public StatsAppState( Node guiNode, BitmapFont guiFont ) {
this.guiNode = guiNode;
this.guiFont = guiFont;
}
/**
* Called by SimpleApplication to provide an early font
* so that the fpsText can be created before init. This
* is because several applications expect to directly access
* fpsText... unfortunately.
*/
void setFont( BitmapFont guiFont ) {
this.guiFont = guiFont;
this.fpsText = new BitmapText(guiFont, false);
}
public BitmapText getFpsText() {
return fpsText;
}
public StatsView getStatsView() {
return statsView;
}
public float getSecondCounter() {
return secondCounter;
}
public void toggleStats() {
setDisplayFps( !showFps );
setDisplayStatView( !showStats );
}
public void setDisplayFps(boolean show) {
showFps = show;
if (fpsText != null) {
fpsText.setCullHint(show ? CullHint.Never : CullHint.Always);
}
}
public void setDisplayStatView(boolean show) {
showStats = show;
if (statsView != null ) {
statsView.setEnabled(show);
statsView.setCullHint(show ? CullHint.Never : CullHint.Always);
}
}
@Override
public void initialize(AppStateManager stateManager, Application app) {
super.initialize(stateManager, app);
this.app = app;
if (app instanceof SimpleApplication) {
SimpleApplication simpleApp = (SimpleApplication)app;
if (guiNode == null)
guiNode = simpleApp.guiNode;
if (guiFont == null )
guiFont = simpleApp.guiFont;
}
if (guiNode == null) {
throw new RuntimeException( "No guiNode specific and cannot be automatically determined." );
}
if (guiFont == null) {
guiFont = app.getAssetManager().loadFont("Interface/Fonts/Default.fnt");
}
loadFpsText();
loadStatsView();
}
/**
* Attaches FPS statistics to guiNode and displays it on the screen.
*
*/
public void loadFpsText() {
if (fpsText == null) {
fpsText = new BitmapText(guiFont, false);
}
fpsText.setLocalTranslation(0, fpsText.getLineHeight(), 0);
fpsText.setText("Frames per second");
fpsText.setCullHint(showFps ? CullHint.Never : CullHint.Always);
guiNode.attachChild(fpsText);
}
/**
* Attaches Statistics View to guiNode and displays it on the screen
* above FPS statistics line.
*
*/
public void loadStatsView() {
statsView = new StatsView("Statistics View",
app.getAssetManager(),
app.getRenderer().getStatistics());
// move it up so it appears above fps text
statsView.setLocalTranslation(0, fpsText.getLineHeight(), 0);
statsView.setEnabled(showStats);
statsView.setCullHint(showStats ? CullHint.Never : CullHint.Always);
guiNode.attachChild(statsView);
}
@Override
public void setEnabled(boolean enabled) {
super.setEnabled(enabled);
if (enabled) {
fpsText.setCullHint(showFps ? CullHint.Never : CullHint.Always);
statsView.setEnabled(showStats);
statsView.setCullHint(showStats ? CullHint.Never : CullHint.Always);
} else {
fpsText.setCullHint(CullHint.Always);
statsView.setEnabled(false);
statsView.setCullHint(CullHint.Always);
}
}
@Override
public void update(float tpf) {
if (showFps) {
secondCounter += app.getTimer().getTimePerFrame();
frameCounter ++;
if (secondCounter >= 1.0f) {
int fps = (int) (frameCounter / secondCounter);
fpsText.setText("Frames per second: " + fps);
secondCounter = 0.0f;
frameCounter = 0;
}
}
}
@Override
public void cleanup() {
super.cleanup();
guiNode.detachChild(statsView);
guiNode.detachChild(fpsText);
}
}
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