From cf21f34a1a5d5ac5cd01938b72cd51abf839b803 Mon Sep 17 00:00:00 2001
From: Timo Ley <timo.ley@tilera.dev>
Date: Sun, 21 May 2023 09:49:28 +0200
Subject: [PATCH] feat: better cli input

---
 build.gradle                   | 7 +++++++
 src/main/java/ma2tetr/App.java | 5 ++++-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/build.gradle b/build.gradle
index a9c3eda..8d9decb 100644
--- a/build.gradle
+++ b/build.gradle
@@ -14,3 +14,10 @@ application {
     mainClass = 'ma2tetr.App'
 }
 
+jar {
+    manifest {
+        attributes(
+            "Main-Class": "ma2tetr.App"
+        )
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/ma2tetr/App.java b/src/main/java/ma2tetr/App.java
index f933a85..9de05fe 100644
--- a/src/main/java/ma2tetr/App.java
+++ b/src/main/java/ma2tetr/App.java
@@ -10,7 +10,10 @@ public class App {
     public static void main(String[] args) {
         double radius;
         if (args.length != 2) {
-            throw new RuntimeException("Needs 2 arguments");
+            System.out.println("Required arguments: <calculator> <radius>");
+            System.out.println(" - calculator: either 'scaling' or 'moving'");
+            System.out.println(" - radius: the sphere radius as a number");
+            return;
         }
         try {
             radius = Double.parseDouble(args[1]);