Initial solution L3

1 files changed, 36 insertions, 14 deletions

diff --git a/labb3/tiles/TileList.h b/labb3/tiles/TileList.h
index a4b6ce6..865823f 100644
--- a/labb3/tiles/TileList.h
+++ b/labb3/tiles/TileList.h
@@ -1,8 +1,8 @@
-// This is the .h file you will edit and turn in.
-// We have provided a skeleton for you,
-// but you must finish it as described in the spec.
-// Also remove these comments here and add your own, as well as on the members.
-// TODO: remove this comment header
+/*
+ * TDDD86 Lab 3a - gusso230 (group 11)
+ * This file contains the tile list structure.
+ * You can add, draw, lower, raise and remove tiles.
+ */
 
 #ifndef TILELIST_H
 #define TILELIST_H
@@ -12,18 +12,40 @@
 
 class TileList {
 public:
-    TileList();
-    ~TileList();
-    void addTile(Tile tile);
-    void drawAll(QGraphicsScene* scene);
-    int indexOfTopTile(int x, int y);
-    void lower(int x, int y);
-    void raise(int x, int y);
-    void remove(int x, int y);
-    void removeAll(int x, int y);
+    TileList(); // allocate an empty tile list
+    ~TileList(); // deallocate the tile list
+    void addTile(Tile tile); // add a tile to the tile list, possibly reallocating
+    void drawAll(QGraphicsScene *scene) const; // draw all tiles to `scene`
+    int indexOfTopTile(int x, int y) const;
+    void lower(int x, int y); // move the top tile at (x, y) to the bottom
+    void raise(int x, int y); // move the bottom tile at (x, y) to the top
+    void remove(int x, int y); // remove the top tile at (x, y)
+    void removeAll(int x, int y); // remove all tiles at (x, y)
 
 private:
+    static const int INITIAL_SIZE = 10;  // the initial size
+    static const int INCREASE_SIZE = 10; // how much the size is increased when
+                                         // it's needed
+    int cur_size = 0;                    // current size of array
+    int amount_tiles;                    // number of active tiles in array
+    Tile *tiles;                         // the array
 
+    int indexOfBottomTile(int x, int y) const;
+
+    /*
+     * shiftRight and shiftLeft move a group of tiles either right or left
+     * in the internal array.
+     *   shiftRight(1, 4):
+     *     0 1 2 3 4 5
+     *     0 1 1 2 3 5
+     *   shiftLeft(4, 1):
+     *     0 1 2 3 4 5
+     *     0 2 3 4 4 5
+     *   Effectively, `start` is duplicated either to the right for shiftRight
+     *   or to the left for shiftLeft, and `end` is lost.
+     */
+    void shiftRight(int start, int end);
+    void shiftLeft(int start, int end);
 };
 
 #endif // TILELIST_H