AnimationBeat.java

public class AnimationBeat {
    private long started;
    private long a; // length of phase a
    private long b; // length of phase b
    private long c; // length of phase c
   
    public AnimationBeat(){
        started = System.currentTimeMillis();
        this.a = 5000;
        this.b = 500;
        this.c = 500;
    }

    // returns which phase the animation is currently in
    public char getInPhase(){
        long currTime = System.currentTimeMillis();
        long rem = (currTime - started) % (a + b);
        if (rem > a + b){
            return 'c';
        } else if (rem > a) {
            return 'b';
        } else {
            return 'c';
        }
    }

    // returns a number (out of 100) showing the percentage completion of this phase
    public long getPhaseCompletion(){ 
        long currTime = System.currentTimeMillis();
        long rem = (currTime - started) % (a + b+c);
        if (rem > a+b){
            return ((rem -a-b)*100)/c;
        } else if (rem > a){
            return ((rem - a)*100)/b;
        } else {
            return rem*100/a;
        }

    }
    
    public static void main(String[] args){
        
        AnimationBeat animationBeat = new AnimationBeat();
        char inPhase = animationBeat.getInPhase();
        long phaseCompletion = animationBeat.getPhaseCompletion();
        
        System.out.print("Inphase : "+inPhase+" and Phase Completion : "+phaseCompletion);
        
        
    }
}