gitea-mirror/basic-computer-games
1
0
Fork 0
mirror of https://github.com/coding-horror/basic-computer-games.git synced 2025-12-22 07:10:42 -08:00
Code Issues Packages Projects Releases Wiki Activity

improve input handling of numeric values

Browse Source
This commit is contained in:
jason
2022-01-05 19:48:19 -08:00
parent 1b6fd48d48
commit 56ccff2d55
1 changed files with 15 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

21
81_Splat/java/src/Splat.java
View File

@@ -39,8 +39,7 @@ public class Splat {
System.out.printf(" ACCELERATION = %.2f FT/SEC/SEC +/-5%%\n", initial.getOriginalAcceleration()); System.out.printf(" ACCELERATION = %.2f FT/SEC/SEC +/-5%%\n", initial.getOriginalAcceleration());
System.out.println("SET THE TIMER FOR YOUR FREEFALL."); System.out.println("SET THE TIMER FOR YOUR FREEFALL.");
System.out.print("HOW MANY SECONDS "); float freefallTime = promptFloat("HOW MANY SECONDS ");
float freefallTime = scanner.nextFloat();
System.out.println("HERE WE GO.\n"); System.out.println("HERE WE GO.\n");
System.out.println("TIME (SEC) DIST TO FALL (FT)"); System.out.println("TIME (SEC) DIST TO FALL (FT)");
System.out.println("========== ================="); System.out.println("========== =================");
@@ -73,18 +72,28 @@ public class Splat {
private float promptTerminalVelocity() { private float promptTerminalVelocity() {
if (askYesNo("SELECT YOUR OWN TERMINAL VELOCITY")) { if (askYesNo("SELECT YOUR OWN TERMINAL VELOCITY")) {
System.out.print("WHAT TERMINAL VELOCITY (MI/HR) "); float terminalVelocity = promptFloat("WHAT TERMINAL VELOCITY (MI/HR) ");
return mphToFeetPerSec(scanner.nextFloat()); return mphToFeetPerSec(terminalVelocity);
} }
float terminalVelocity = (int) (1000 * random.nextFloat()); float terminalVelocity = (int) (1000 * random.nextFloat());
System.out.printf("OK. TERMINAL VELOCITY = %.2f MI/HR\n", terminalVelocity); System.out.printf("OK. TERMINAL VELOCITY = %.2f MI/HR\n", terminalVelocity);
return mphToFeetPerSec(terminalVelocity); return mphToFeetPerSec(terminalVelocity);
} }
private float promptFloat(String prompt){
while(true){
System.out.print(prompt);
try {
return scanner.nextFloat();
} catch (Exception e) {
scanner.next(); // clear current input
}
}
}
private float promptGravitationalAcceleration() { private float promptGravitationalAcceleration() {
if (askYesNo("WANT TO SELECT ACCELERATION DUE TO GRAVITY")) { if (askYesNo("WANT TO SELECT ACCELERATION DUE TO GRAVITY")) {
System.out.print("WHAT ACCELERATION (FT/SEC/SEC) "); return promptFloat("WHAT ACCELERATION (FT/SEC/SEC) ");
return scanner.nextFloat();
} }
return chooseRandomAcceleration(); return chooseRandomAcceleration();
} }