Reddit Intermediate Challenge #118

package reddit;

import java.math.BigDecimal;
import java.util.Scanner;

public class RedditChallengeIntermediate118 {


    public static void main(String[] args) {
        RedditChallengeIntermediate118 rc118 = new RedditChallengeIntermediate118();
        Scanner scan = new Scanner(System.in);
        String input = scan.nextLine();
        //String input = "5.00 2.00 2.00 1.00";
        //rc118.calculate(input.split(" "));
        //input = "99.99 1.23 3.21 5.01";
        rc118.calculate(input.split(" "));
    }


    public void calculate(String[] inputs) {
        int simLength = new BigDecimal(inputs[0]).multiply(new BigDecimal(100)).setScale(0).intValueExact();
        int shellRetrieval = new BigDecimal(inputs[1]).multiply(new BigDecimal(100)).setScale(0).intValueExact();
        int propellantRetrieval = new BigDecimal(inputs[2]).multiply(new BigDecimal(100)).setScale(0).intValueExact();
        int firingTime = new BigDecimal(inputs[3]).multiply(new BigDecimal(100)).setScale(0).intValueExact();

        int shotsFired = 0;

        boolean cannonLoaded = false;
        boolean cannonFired = false;
        boolean cannonReady = true;
        int cannonTimer = 0;

        boolean shellLoaded = false;
        int shellTimer = 0;

        boolean propellantLoaded = false;
        int propellantTimer = 0;

        //System.out.println("Length of simulation: " + simLength);
        //System.out.println("Length of shell retrieval: " + shellRetrieval);
        //System.out.println("Length of propellant retrieval: " + propellantRetrieval);
        //System.out.println("Length of firingTime: " + firingTime);

        for (int timer = 1; timer <= simLength; timer++) {
            if (cannonFired) cannonTimer++;
            if (!shellLoaded) shellTimer++;
            if (!propellantLoaded) propellantTimer++;

            if (shellTimer == shellRetrieval) shellLoaded = true;
            if (propellantTimer == propellantRetrieval) propellantLoaded = true;

            if (!cannonReady) {
                if (cannonTimer == firingTime) {
                    cannonReady = true;
                    cannonTimer = 0;
                    cannonFired = false;
                }
            }

            if (cannonReady) {
                if (shellLoaded && propellantLoaded) cannonLoaded = true;

                if (cannonLoaded) {
                    shotsFired++;
                    cannonFired = true;
                    cannonLoaded = false;
                    cannonReady = false;
                    shellLoaded = false;
                    shellTimer = 0;
                    propellantLoaded = false;
                    propellantTimer = 0;
                }
            }
        }
        System.out.println("Number of shots fired: " + shotsFired);
    }
}