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package ch.asynk.zproject.screens;
import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Screen;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.graphics.OrthographicCamera;
import com.badlogic.gdx.graphics.g2d.SpriteBatch;
import com.badlogic.gdx.graphics.g2d.TextureAtlas;
import com.badlogic.gdx.graphics.g2d.TextureAtlas.AtlasRegion;
import ch.asynk.zproject.ZProject;
public class LoadingScreen implements Screen
{
private final ZProject zproject;
private final SpriteBatch batch;
private final Color c;
private final OrthographicCamera camera;
private final float DELAY_AFTER = 1f;
private final float ALPHA_FACTOR = 1.5f;
private boolean paused;
private TextureAtlas atlas;
private AtlasRegion bar;
private AtlasRegion border;
private AtlasRegion loading;
private AtlasRegion loaded;
private int x, y;
private float acc;
private float percent;
private float alpha;
private boolean incr;
private boolean isLoaded;
public interface LoadAction {
void call();
}
private LoadAction onLoaded;
public LoadingScreen(final ZProject zproject, LoadAction startLoading, LoadAction onLoaded)
{
this.zproject = zproject;
this.onLoaded = onLoaded;
this.batch = new SpriteBatch();
this.c = batch.getColor();
this.camera = new OrthographicCamera();
int w = Gdx.graphics.getWidth();
int h = Gdx.graphics.getHeight();
this.camera.setToOrtho(false, w, h);
this.camera.update();
this.paused = false;
atlas = zproject.assets.getAtlas(zproject.assets.LOADING);
bar = atlas.findRegion("bar");
border = atlas.findRegion("border");
loading = atlas.findRegion("loading");
loaded = atlas.findRegion("loaded");
computeCoords(w, h);
percent = 0f;
alpha = 1f;
incr = false;
isLoaded = false;
startLoading.call();
}
private void computeCoords(int width, int height)
{
x = (width - border.getRegionWidth()) / 2;
y = (height - border.getRegionHeight()) / 2;
}
@Override public void render(float delta)
{
if (paused) return;
percent = zproject.assets.getProgress();
if (!isLoaded && percent >= 1f) {
acc = 0f;
alpha = 1f;
incr = false;
}
if (isLoaded) {
acc += delta;
if (acc >= DELAY_AFTER) {
// FIXME callback
// zproject.switchToGame();
onLoaded.call();
return;
}
}
delta *= ALPHA_FACTOR;
if (incr) {
alpha += delta;
if (alpha >= 1f ) {
alpha = 1f;
incr = false;
}
} else {
alpha -= delta;
if (alpha <= 0f ) {
alpha = 0f;
incr = true;
}
}
if (!isLoaded) {
if (zproject.assets.update()) {
ZProject.debug("LoadingScreen", "assets loaded");
isLoaded = true;
}
}
Gdx.gl.glClearColor(0, 0, 0, 1);
Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
batch.setProjectionMatrix(camera.combined);
batch.begin();
batch.setColor(c.r, c.g, c.b, 1f);
batch.draw(border, x, y);
batch.draw(bar, x + 4, y + 4, percent * bar.getRegionWidth(), bar.getRegionHeight());
batch.setColor(c.r, c.g, c.b, alpha);
if (!isLoaded) {
batch.draw(loading, x, y + border.getRegionHeight() + 3);
} else {
batch.draw(loaded, x + border.getRegionWidth() - loaded.getRegionWidth(), y - loaded.getRegionHeight() - 3);
}
batch.end();
}
@Override public void resize(int width, int height)
{
if (paused) return;
ZProject.debug("LoadingScreen", String.format("resize (%d,%d)",width, height));
this.camera.setToOrtho(false, width, height);
this.camera.update();
computeCoords(width, height);
}
@Override public void dispose()
{
ZProject.debug("LoadingScreen", "dispose()");
batch.dispose();
}
@Override public void show()
{
ZProject.debug("LoadingScreen", "show()");
}
@Override public void hide()
{
ZProject.debug("LoadingScreen", "hide()");
}
@Override public void pause()
{
paused = true;
ZProject.debug("pause() ");
}
@Override public void resume()
{
ZProject.debug("resume() ");
resize(Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
paused = false;
}
}
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