File Parser for levels (#18)

Co-authored-by: Debucquoy Anthony (tonitch) <debucquoy.anthony@gmail.com>
Reviewed-on: #18
Reviewed-by: Mat_02 <diletomatteo@gmail.com>

app/src/main/java/school_project/Piece.java

@@ -24,10 +24,6 @@ public class Piece extends Shape{
     }
 
     public void setPosition(Vec2 position){
-        if (linked_map == null) {
-            return;
-        }
-
         this.Position = position;
     }
 
@@ -56,4 +52,14 @@ public class Piece extends Shape{
             matrix = temp_matrix;
         }
     }
+
+    @Override
+    public boolean equals(Object obj) {
+        if(obj instanceof Piece pieceObj){
+            if( pieceObj.getPosition().equals(this.getPosition()) && pieceObj.getShape().equals(getShape())) {
+                return true;
+            }
+        }
+        return false;
+    }
 }