From cdabef59bb6c39276b53849c75046454ca4ae995 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Justus=20G=C3=B6rgens?= <justus.goergens@gmx.net>
Date: Wed, 22 Dec 2021 12:17:09 +0100
Subject: [PATCH] first commit

---
 src/Life.java | 96 +++++++++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 90 insertions(+), 6 deletions(-)

diff --git a/src/Life.java b/src/Life.java
index 84ab855..a946842 100644
--- a/src/Life.java
+++ b/src/Life.java
@@ -1,11 +1,15 @@
+import java.util.Arrays;
+
 public class Life implements ILife {
+
+  static String[] zelle =new String[]{  "     ",
+                                        "     ",
+                                        " *** ",
+                                        "     ",
+                                        "     " };
   
   public static void main(String[] args) {
-    Life l = new Life(new String[] {  "     ",
-                                      "     ",
-                                      " *** ",
-                                      "     ",
-                                      "     " });
+    Life l = new Life(zelle);
     l = (Life) l.nextGeneration();
   }
 
@@ -20,36 +24,116 @@ public class Life implements ILife {
       for (int x = 0; x < setup[y].length(); x++)
         if (setup[y].charAt(x) != ' ')
           setAlive(x, y);
+   printZelle();
   }
 
+  private void printZelle() {
+    for (int i = 0; i < zelle.length; i++)
+      System.out.println(Arrays.toString(new String[]{zelle[i]}));
+  }
 
   @Override
   public void nukeAll() {
     // TODO Auto-generated method stub
 
+    for (int y = 0; y < zelle.length; y++)
+      for (int x = 0; x < zelle[y].length(); x++)
+          setDead(x, y);
   }
 
   @Override
   public void setAlive(int x, int y) {
     // TODO Auto-generated method stub
 
+    zelle[y] = zelle[y].substring(0, x) + '*' + zelle[y].substring(x+1);
   }
 
   @Override
   public void setDead(int x, int y) {
     // TODO Auto-generated method stub
 
+    zelle[y] = zelle[y].substring(0, x) + ' ' + zelle[y].substring(x+1);
   }
 
   @Override
   public boolean isAlive(int x, int y) {
     // TODO Auto-generated method stub
-    return false;
+
+    if(zelle[x].charAt(y) == '*')
+      return true;
+    else
+      return false;
   }
 
   @Override
   public ILife nextGeneration() {
     // TODO Auto-generated method stub
+
+    String[] nextZelle =new String[]{  "     ",
+                                       "     ",
+                                       "     ",
+                                       "     ",
+                                       "     " };
+
+    for (int y = 0; y < zelle.length; y++)
+      for (int x = 0; x < zelle[y].length(); x++){
+
+        //anzahl der lebenden nachbarn
+        float nachbarn = lebendeNachbarn(y, x);
+
+        //neuer *
+        if(nachbarn == 3)
+          zelle[y] = zelle[y].substring(0, x) + '*' + zelle[y].substring(x+1);
+
+        //ein * stirbt an überpopulation
+        if(nachbarn < 2 || nachbarn > 3)
+          zelle[y] = zelle[y].substring(0, x) + ' ' + zelle[y].substring(x+1);
+      }
     return null;
   }
+
+  private float lebendeNachbarn(int y, int x) {
+
+    float nachbarn = 0;
+
+    if(y == 0) {
+      if (zelle[y + 1].charAt(x - 1) == '*') {
+        nachbarn++;
+      }
+      if (zelle[y].charAt(x - 1) == '*') {
+        nachbarn++;
+      }
+    }
+
+    if(x == 4 && y == 4) {
+      if (zelle[y - 1].charAt(x - 1) == '*') {
+        nachbarn++;
+      }
+      if (zelle[y - 1].charAt(x) == '*') {
+        nachbarn++;
+      }
+      if (zelle[y - 1].charAt(x + 1) == '*') {
+        nachbarn++;
+      }
+    }
+
+    if(!(x == 0 && y== 0)) {
+      if (zelle[y].charAt(x + 1) == '*') {
+        nachbarn++;
+      }
+      if (zelle[y + 1].charAt(x + 1) == '*') {
+        nachbarn++;
+      }
+      if (zelle[y + 1].charAt(x) == '*') {
+        nachbarn++;
+      }
+    }
+
+    return nachbarn;
+  }
+
+  @Override
+  public String toString() {
+    return super.toString();
+  }
 }
\ No newline at end of file