import java.io.IOException;
import java.util.Random;
import java.util.Scanner;
public class MemorySequenceGame {
static int[] sequence = new int[15];
static int n, high=1;
public static void generateSeq(int mSecs){
Random rand = new Random();
for(int i=0;i<n;i++) {
sequence[i]=rand.nextInt(99) + 10;
try {
Thread.sleep(mSecs);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.print(sequence[i]+” “);
}
}
public static boolean play(int mSecs){
Scanner sc = new Scanner(System.in);
boolean winStatus = true;
int i;
while(n<=15) {
System.out.print(“nThe numbers are: “);
generateSeq(mSecs);
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
new ProcessBuilder(“cmd”, “/c”, “cls”).inheritIO().start().waitFor();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
int input;
System.out.println(“nnEnter all the “+n+” numbers in proper sequence: “);
for(i=0;i<n;i++) {
input=sc.nextInt();
if(input!=sequence[i]) {
System.out.println(“nSorry!! You are eliminated!!”);
winStatus=false;
return winStatus;
}
}
System.out.println(“nHurray!! You are promoted to Level: “+((++n)-2));
}
return winStatus;
}
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
int choice=1,subChoice;
boolean status;
while(choice != 0) {
n=3;
System.out.println(“n~~ Welcome to the Memory-Sequence-Game ~~”);
System.out.println(“nEnter 1: Start a New Game.nEnter 2: View Highest ScorenEnter 0: Quit”);
choice = sc.nextInt();
switch(choice) {
case 1:
subChoice=0;
while(subChoice==0) {
System.out.println(“nChoose Difficulty Level”);
System.out.println(“nEnter 1: Easy (Sequence spawn time: 0.75 secs).nEnter 2: Medium (Sequence spawn time: 0.50 secs)nEnter 3: Difficult (Sequence spawn time: 0.25 secs)”);
subChoice = sc.nextInt();
switch(subChoice) {
case 1: status=play(750);
break;
case 2: status=play(500);
break;
case 3: status=play(250);
break;
default: System.out.println(“nWrong Entry. Try again!!”);
continue;
}
if(status) {
System.out.println(“n~~ CONGRATULATIONS ~~ You are the CHAMPION of the Memory Game !!n”);
high=13;
}
else {
if(n==3)
System.out.println(“Sorry!! You could not even clear the 1st level!!n”);
else
System.out.println(“You have Mastered the Memory Game upto level “+(n-3)+” !!n”);
if((n-3)>high)
high=n-3;
}
}
break;
case 2: System.out.println(“nYour highest achievement: Level “+high);
break;
case 0: System.out.println(“nThank you!! Have a nice day!! “);
break;
default: System.out.println(“nWrong Entry. Try again!!”);
}
}
}
}
This program represents the Memory-Sequence game where the player can choose a particular difficulty and play the game accordingly. In this game random sequences of numbers are presented to the player and then the screen is wiped clean. Finally, the player is asked to repeat the sequence exactly as it was displayed to him. In this way, the length of the sequence is increased from 3 to 15. Once the user succeeds to answer all 15 questions, the new Highest score is set and a Congratulation message is displayed.
In the steps to develop this console based application I had to face a handful of problems. However, solving these problems helped me to learn some necessities about Java programming and game designing concepts. One very remarkable problem that I had to face was in the execution of the Screen Clear statement. The following command new ProcessBuilder(“cmd”, “/c”, “cls”).inheritIO().start().waitFor(); was producing run-time errors when the program was being executed using the Eclipse IDE. Therefore, I did a bit of research and realized that the Eclipse console does not allow commands to clear its console memory buffer and hence this command was invalid there. Finally, I had to re-execute this code using BlueJ and the expected output was produced. The program is also executing perfectly in the Windows Console environment.
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