86 lines
2.3 KiB
Java
86 lines
2.3 KiB
Java
|
package itdelatrisu.opsu.ui;
|
||
|
|
|
||
|
|
import itdelatrisu.opsu.GameImage;
|
||
|
|
import itdelatrisu.opsu.ui.animations.AnimatedValue;
|
||
|
|
import itdelatrisu.opsu.ui.animations.AnimationEquation;
|
||
|
|
|
||
|
|
import org.newdawn.slick.Image;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Star fountain consisting of two star streams.
|
||
|
|
*/
|
||
|
|
public class StarFountain {
|
||
|
|
/** The (approximate) number of stars in each burst. */
|
||
|
|
private static final int BURST_SIZE = 80;
|
||
|
|
|
||
|
|
/** Star streams. */
|
||
|
|
private final StarStream left, right;
|
||
|
|
|
||
|
|
/** Burst progress. */
|
||
|
|
private final AnimatedValue burstProgress = new AnimatedValue(800, 0, 1, AnimationEquation.LINEAR);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Initializes the star fountain.
|
||
|
|
* @param containerWidth the container width
|
||
|
|
* @param containerHeight the container height
|
||
|
|
*/
|
||
|
|
public StarFountain(int containerWidth, int containerHeight) {
|
||
|
|
Image img = GameImage.STAR2.getImage();
|
||
|
|
float xDir = containerWidth * 0.4f, yDir = containerHeight * 0.75f;
|
||
|
|
this.left = new StarStream(-img.getWidth(), containerHeight, xDir, -yDir, 0);
|
||
|
|
this.right = new StarStream(containerWidth, containerHeight, -xDir, -yDir, 0);
|
||
|
|
setStreamProperties(left);
|
||
|
|
setStreamProperties(right);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Sets attributes for the given star stream.
|
||
|
|
*/
|
||
|
|
private void setStreamProperties(StarStream stream) {
|
||
|
|
stream.setDirectionSpread(60f);
|
||
|
|
stream.setDurationSpread(1100, 200);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Draws the star fountain.
|
||
|
|
*/
|
||
|
|
public void draw() {
|
||
|
|
left.draw();
|
||
|
|
right.draw();
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Updates the stars in the fountain by a delta interval.
|
||
|
|
* @param delta the delta interval since the last call
|
||
|
|
*/
|
||
|
|
public void update(int delta) {
|
||
|
|
left.update(delta);
|
||
|
|
right.update(delta);
|
||
|
|
if (burstProgress.update(delta)) {
|
||
|
|
int size = Math.round((float) delta / burstProgress.getDuration() * BURST_SIZE);
|
||
|
|
left.burst(size);
|
||
|
|
right.burst(size);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Creates a burst of stars to be processed during the next {@link #update(int)} call.
|
||
|
|
* @param wait if {@code true}, will not burst if a previous burst is in progress
|
||
|
|
*/
|
||
|
|
public void burst(boolean wait) {
|
||
|
|
if (wait && (burstProgress.getTime() < burstProgress.getDuration() || !left.isEmpty() || !right.isEmpty()))
|
||
|
|
return;
|
||
|
|
|
||
|
|
burstProgress.setTime(0);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Clears the stars currently in the fountain.
|
||
|
|
*/
|
||
|
|
public void clear() {
|
||
|
|
left.clear();
|
||
|
|
right.clear();
|
||
|
|
burstProgress.setTime(burstProgress.getDuration());
|
||
|
|
}
|
||
|
|
}
|