Better bot creation, faceLocation() improved, Mojang API fetching cache added.

src/main/java/net/nuggetmc/ai/utils/MathUtils.java

@@ -0,0 +1,30 @@
+package net.nuggetmc.ai.utils;
+
+import org.bukkit.util.NumberConversions;
+import org.bukkit.util.Vector;
+
+public class MathUtils {
+
+    public static float[] fetchYawPitch(Vector dir) {
+        double x = dir.getX();
+        double z = dir.getZ();
+
+        float[] out = new float[2];
+
+        if (x == 0.0D && z == 0.0D) {
+            out[1] = (float) (dir.getY() > 0.0D ? -90 : 90);
+        }
+
+        else {
+            double theta = Math.atan2(-x, z);
+            out[0] = (float) Math.toDegrees((theta + 6.283185307179586D) % 6.283185307179586D);
+
+            double x2 = NumberConversions.square(x);
+            double z2 = NumberConversions.square(z);
+            double xz = Math.sqrt(x2 + z2);
+            out[1] = (float) Math.toDegrees(Math.atan(-dir.getY() / xz));
+        }
+
+        return out;
+    }
+}

src/main/java/net/nuggetmc/ai/utils/MojangAPI.java

@@ -6,12 +6,25 @@ import com.google.gson.JsonParser;
 import java.io.IOException;
 import java.io.InputStreamReader;
 import java.net.URL;
+import java.util.HashMap;
+import java.util.Map;
 
 public class MojangAPI {
 
-    // Eventually create some sort of cache that stores the skin data so it doesn't have to keep pulling from the API
-    // CATCHING NULLPOINTEREXCEPTION BAD!!!! eventually fix from the getAsJsonObject thingy
+    private static final Map<String, String[]> CACHE = new HashMap<>();
+
     public static String[] getSkin(String name) {
+        if (CACHE.containsKey(name)) {
+            return CACHE.get(name);
+        }
+
+        String[] values = pullFromAPI(name);
+        CACHE.put(name, values);
+        return values;
+    }
+
+    // CATCHING NULLPOINTEREXCEPTION BAD!!!! eventually fix from the getAsJsonObject thingy
+    public static String[] pullFromAPI(String name) {
         try {
             String uuid = new JsonParser().parse(new InputStreamReader(new URL("https://api.mojang.com/users/profiles/minecraft/" + name)
                     .openStream())).getAsJsonObject().get("id").getAsString();
@@ -19,7 +32,7 @@ public class MojangAPI {
                     .parse(new InputStreamReader(new URL("https://sessionserver.mojang.com/session/minecraft/profile/" + uuid + "?unsigned=false")
                             .openStream())).getAsJsonObject().get("properties").getAsJsonArray().get(0).getAsJsonObject();
             return new String[] {property.get("value").getAsString(), property.get("signature").getAsString()};
-        } catch (IOException | NullPointerException e) {
+        } catch (IOException | IllegalStateException e) {
             return null;
         }
     }