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106 lines
1.8 KiB
106 lines
1.8 KiB
package mightypork.utils.math.coord;
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import mightypork.gamecore.control.timing.Updateable;
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import mightypork.utils.math.Calc;
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/**
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* TODO revise
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*
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* @author MightyPork
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*/
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public class CoordAnimated extends Coord implements Updateable {
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private double animTime = 0;
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private Coord offs;
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private Coord start;
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private double time = 0;
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/**
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* Update delta timing
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*
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* @param delta delta time to add
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*/
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@Override
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public void update(double delta)
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{
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if (start == null) start = new Coord();
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if (offs == null) offs = new Coord();
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animTime = Calc.clampd(animTime + delta, 0, time);
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if (animIsFinished()) {
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time = 0;
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animTime = 0;
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start.setTo(this);
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}
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}
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/**
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* Remember position (other changes will be for animation)
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*/
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public void animRemember()
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{
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if (start == null) start = new Coord();
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if (offs == null) offs = new Coord();
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start.setTo(this);
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offs = Coord.zero();
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}
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/**
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* Start animation
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*
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* @param time anim length
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*/
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public void animStart(double time)
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{
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if (start == null) start = new Coord();
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if (offs == null) offs = new Coord();
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this.time = time;
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animTime = 0;
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offs = start.vecTo(this);
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}
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/**
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* Stop animation, assign to current value
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*/
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public void animStop()
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{
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setTo(animGetCurrent());
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animRemember();
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animTime = 0;
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}
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/**
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* Get if animation is finished
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*
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* @return is finished
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*/
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public boolean animIsFinished()
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{
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return animTime >= time;
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}
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/**
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* Get current value (animated)
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*
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* @return curent value
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*/
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public Coord animGetCurrent()
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{
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if (time == 0) return copy(); // avoid zero division
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if (start == null) start = new Coord();
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if (offs == null) offs = new Coord();
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if (animIsFinished()) return this;
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return start.add(offs.mul(animTime / time));
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}
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}
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