apcsa-projectstem-assignment7/src/com/company/GameWheel.java

package com.company;

import java.util.ArrayList;
import java.util.Collections;

public class GameWheel
{
    private final ArrayList<Slice> slices; // List of slices making up the wheel
    private int currentPos;   // Position of currently selected slice on wheel


    /* Returns string representation of GameWheel with each numbered slice
     * on a new line
     */
    public String toString(){
        //Implement the toString method here
        String thing = "";
        for (int i = 0; i < slices.size(); i++){
            thing += i + " - " + slices.get(i).toString() + "\n";
        }
        return thing;
    }


    /* Randomizes the positions of the slices that are in the wheel, but without
     * changing the pattern of the colors
     */
    public void scramble()
    {
        //Implement the scramble method here
        ArrayList<Slice> newSlices = new ArrayList<>();
        ArrayList<Slice> redStuff = new ArrayList<>(shuffle(colorSplit(slices, "red")));
        ArrayList<Slice> blueStuff = new ArrayList<>(shuffle(colorSplit(slices, "blue")));
        ArrayList<Slice> blackStuff = new ArrayList<>(shuffle(colorSplit(slices, "black")));
        int blackCount = 0;
        int blueCount = 0;
        int redCount = 0;
        for (int i = 0; i < 20; i++){
            if (i % 5 == 0){
                newSlices.add(blackStuff.get(blackCount));
                blackCount++;
            } else if (i  % 2 == 0){
                newSlices.add(blueStuff.get(blueCount));
                blueCount++;
            } else {
                newSlices.add(redStuff.get(redCount));
                redCount++;
            }
        }
        slices.subList(0, 20).clear();
        slices.addAll(newSlices);
    }


    /* Sorts the positions of the slices that are in the wheel by prize amount,
     * but without changing the pattern of the colors.
     */
    public void sort(){
        /*
        Implement the sort method here
         - Need to use colorSplit(ArrayList<Slice>) and sort(ArrayList<Slice>) to sort
           individual lists, then combine into big list similar to scramble method.
        */
    }

    /* COMPLETED METHODS - YOU DO NOT NEED TO CHANGE THESE */

    /* Creates a wheel with 20 preset slices
     */
    public GameWheel()
    {
        this(getStandardPrizes());
    }

    /* Creates a wheel with 20 slices, using values from array parameter
     */
    public GameWheel(int[] prizes)
    {
        currentPos = 0;
        slices = new ArrayList<>();
        for(int i = 0; i < 20; i++){
            int pa = 0;
            String col = "blue";
            if(i < prizes.length)
                pa = prizes[i];
            if (i%5 == 0)
                col = "black";
            else if (i%2 == 1)
                col = "red";
            slices.add(new Slice(col, pa));
        }
    }

    /* Spins the wheel by so that a different slice is selected. Returns that
     * slice (Note: the 10 slices following the current slice are more likely to
     * be returned than the other 10).
     */
    public Slice spinWheel()
    {
        //spin power between range of 1-50 (inclusive)
        int power = (int)(Math.random()*50 + 1);
        currentPos = (currentPos + power) % slices.size();
        return slices.get(currentPos);
    }

    public Slice getSlice(int i){
        int sliceNum = i;
        if(i < 0 || i > 19)
            sliceNum = 0;
        return slices.get(sliceNum);
    }

    // Makes an array with a standard list of prizes
    private static int[] getStandardPrizes()
    {
        int[] arr = new int[20];
        for (int i=0; i < 20; i++)
        {
            if (i%5 == 0)
                arr[i] = i*1000;
            else if (i%2 == 1)
                arr[i] = i*100;
            else
                arr[i] = i*200;
        }
        return arr;
    }
    private ArrayList<Slice> colorSplit(ArrayList<Slice> list, String color){
        ArrayList<Slice> newList = new ArrayList<>();
        for (Slice e : list){
            if (e.getColor().equals(color)){
                newList.add(e);
            }
        }
        return newList;
    }
    private ArrayList<Slice> shuffle(ArrayList<Slice> list){
        Collections.shuffle(list);
        return list;
    }
    private ArrayList<Slice> sort(ArrayList<Slice> list){
        for (int i = 1; i < list.size(); i++){
            Slice toInsert = new Slice("toInsert", list.get(i).getPrizeAmount());
            int j;
            for (j = i; j > 0; j--)
            {
                if (toInsert.getPrizeAmount() >= list.get(j-1).getPrizeAmount()){
                    break;
                }
            }
            list.add(j, list.remove(i));
        }
        return list;
    }
}