Added initial version

Client/src/main/java/org/runite/client/Class2.java

@@ -0,0 +1,60 @@
+package org.runite.client;
+
+// TODO MapSceneDefinition or something
+public final class Class2 {
+
+    public int color;
+    public int sprite;
+    public boolean aBoolean69 = false;
+
+    public final void decode(DataBuffer buffer) {
+        while (true) {
+            int opcode = buffer.readUnsignedByte();
+            if (opcode == 0) {
+                return;
+            }
+
+            this.decode(buffer, opcode);
+        }
+    }
+
+    /**
+     * @param rotations The amount of rotations the sprite should be turned clockwise. Each rotation rotates the sprite
+     *                  by 90 degrees clockwise.
+     */
+    public final LDIndexedSprite getSprite(int rotations) {
+        LDIndexedSprite sprite = (LDIndexedSprite) Class3_Sub13_Sub31.aReferenceCache_3369.get(rotations << 16 | this.sprite);
+        if (sprite != null) {
+            return sprite;
+        }
+
+        KeyboardListener.aClass153_1916.retrieveSpriteFile(this.sprite);
+        sprite = Unsorted.method1539(this.sprite, KeyboardListener.aClass153_1916);
+        if (sprite != null) {
+            sprite.method1668(Class102.anInt2136, Class46.anInt740, Class158.anInt2015);
+            sprite.anInt1469 = sprite.width;
+            sprite.anInt1467 = sprite.height;
+
+            for (int var5 = 0; var5 < rotations; ++var5) {
+                sprite.rotateClockwise();
+            }
+
+            Class3_Sub13_Sub31.aReferenceCache_3369.put(sprite, rotations << 16 | this.sprite);
+        }
+
+        return sprite;
+    }
+
+    private void decode(DataBuffer buffer, int opcode) {
+        if (opcode == 1) {
+            this.sprite = buffer.readUnsignedShort();
+        } else if (opcode == 2) {
+            this.color = buffer.readMedium();
+        } else if (opcode == 3) {
+            this.aBoolean69 = true;
+        } else if (opcode == 4) {
+            this.sprite = -1;
+        }
+    }
+
+}