work on game scene + fix bugs

problems :

- game scene was not as shown in the GDD
- problem when moving tilemap (the placeholders didn't follow)
- possible to place units outside the game area

solutions :

- try to make the game scene as close to the gdd as possible
- don't move the tilemap : move the camera instead (this keeps the world position of tilemap intact)
- there was a logic bug in the DraggablePlaceholder. It ain't anymore

Assets/LevelEditor/Levels/TestGame.asset

@@ -15,8 +15,6 @@ MonoBehaviour:
   _data:
   - _key: Background
     _tiles:
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: -10, y: -4, z: 0}
     - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
       _position: {x: -10, y: -3, z: 0}
     - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
@@ -29,8 +27,6 @@ MonoBehaviour:
       _position: {x: -10, y: 1, z: 0}
     - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
       _position: {x: -10, y: 2, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: -9, y: -4, z: 0}
     - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
       _position: {x: -9, y: -3, z: 0}
     - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
@@ -43,8 +39,6 @@ MonoBehaviour:
       _position: {x: -9, y: 1, z: 0}
     - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
       _position: {x: -9, y: 2, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: -8, y: -4, z: 0}
     - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
       _position: {x: -8, y: -3, z: 0}
     - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
@@ -57,8 +51,6 @@ MonoBehaviour:
       _position: {x: -8, y: 1, z: 0}
     - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
       _position: {x: -8, y: 2, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: -7, y: -4, z: 0}
     - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
       _position: {x: -7, y: -3, z: 0}
     - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
@@ -71,8 +63,6 @@ MonoBehaviour:
       _position: {x: -7, y: 1, z: 0}
     - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
       _position: {x: -7, y: 2, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: -6, y: -4, z: 0}
     - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
       _position: {x: -6, y: -3, z: 0}
     - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
@@ -85,8 +75,6 @@ MonoBehaviour:
       _position: {x: -6, y: 1, z: 0}
     - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
       _position: {x: -6, y: 2, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: -5, y: -4, z: 0}
     - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
       _position: {x: -5, y: -3, z: 0}
     - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
@@ -99,8 +87,6 @@ MonoBehaviour:
       _position: {x: -5, y: 1, z: 0}
     - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
       _position: {x: -5, y: 2, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: -4, y: -4, z: 0}
     - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
       _position: {x: -4, y: -3, z: 0}
     - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
@@ -113,8 +99,6 @@ MonoBehaviour:
       _position: {x: -4, y: 1, z: 0}
     - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
       _position: {x: -4, y: 2, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: -3, y: -4, z: 0}
     - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
       _position: {x: -3, y: -3, z: 0}
     - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
@@ -127,8 +111,6 @@ MonoBehaviour:
       _position: {x: -3, y: 1, z: 0}
     - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
       _position: {x: -3, y: 2, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: -2, y: -4, z: 0}
     - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
       _position: {x: -2, y: -3, z: 0}
     - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
@@ -141,8 +123,6 @@ MonoBehaviour:
       _position: {x: -2, y: 1, z: 0}
     - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
       _position: {x: -2, y: 2, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: -1, y: -4, z: 0}
     - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
       _position: {x: -1, y: -3, z: 0}
     - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
@@ -155,160 +135,6 @@ MonoBehaviour:
       _position: {x: -1, y: 1, z: 0}
     - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
       _position: {x: -1, y: 2, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 0, y: -4, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 0, y: -3, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 0, y: -2, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 0, y: -1, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 0, y: 0, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 0, y: 1, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 0, y: 2, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 1, y: -4, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 1, y: -3, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 1, y: -2, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 1, y: -1, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 1, y: 0, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 1, y: 1, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 1, y: 2, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 2, y: -4, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 2, y: -3, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 2, y: -2, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 2, y: -1, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 2, y: 0, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 2, y: 1, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 2, y: 2, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 3, y: -4, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 3, y: -3, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 3, y: -2, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 3, y: -1, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 3, y: 0, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 3, y: 1, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 3, y: 2, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 4, y: -4, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 4, y: -3, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 4, y: -2, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 4, y: -1, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 4, y: 0, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 4, y: 1, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 4, y: 2, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 5, y: -4, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 5, y: -3, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 5, y: -2, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 5, y: -1, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 5, y: 0, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 5, y: 1, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 5, y: 2, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 6, y: -4, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 6, y: -3, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 6, y: -2, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 6, y: -1, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 6, y: 0, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 6, y: 1, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 6, y: 2, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 7, y: -4, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 7, y: -3, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 7, y: -2, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 7, y: -1, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 7, y: 0, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 7, y: 1, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 7, y: 2, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 8, y: -4, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 8, y: -3, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 8, y: -2, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 8, y: -1, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 8, y: 0, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 8, y: 1, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 8, y: 2, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 9, y: -4, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 9, y: -3, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 9, y: -2, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 9, y: -1, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 9, y: 0, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 9, y: 1, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 9, y: 2, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 10, y: -4, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 10, y: -3, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 10, y: -2, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 10, y: -1, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 10, y: 0, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 10, y: 1, z: 0}
-    - _tile: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
-      _position: {x: 10, y: 2, z: 0}
     _isInvisible: 0
     _isCollidable: 0
     _isTrigger: 0
@@ -318,24 +144,62 @@ MonoBehaviour:
     _scale: {x: 1, y: 1}
   - _key: Entities
     _tiles:
-    - _tile: {fileID: 11400000, guid: e0b1d2d816ae5624c99b09a2bebb2a39, type: 2}
-      _position: {x: -7, y: -2, z: 0}
     - _tile: {fileID: 11400000, guid: e0d57b3c128ba1447920637cdb289530, type: 2}
+      _position: {x: -10, y: -2, z: 0}
+    - _tile: {fileID: 11400000, guid: e0d57b3c128ba1447920637cdb289530, type: 2}
+      _position: {x: -10, y: 0, z: 0}
+    - _tile: {fileID: 11400000, guid: e0d57b3c128ba1447920637cdb289530, type: 2}
+      _position: {x: -10, y: 2, z: 0}
+    - _tile: {fileID: 11400000, guid: e0b1d2d816ae5624c99b09a2bebb2a39, type: 2}
+      _position: {x: -8, y: -3, z: 0}
+    - _tile: {fileID: 11400000, guid: e74655ccbd41a2b46b1ec9615aba0301, type: 2}
+      _position: {x: -7, y: -1, z: 0}
+    - _tile: {fileID: 11400000, guid: e74655ccbd41a2b46b1ec9615aba0301, type: 2}
+      _position: {x: -7, y: 0, z: 0}
+    - _tile: {fileID: 11400000, guid: e74655ccbd41a2b46b1ec9615aba0301, type: 2}
       _position: {x: -7, y: 1, z: 0}
     - _tile: {fileID: 11400000, guid: e0b1d2d816ae5624c99b09a2bebb2a39, type: 2}
+      _position: {x: -6, y: -3, z: 0}
+    - _tile: {fileID: 11400000, guid: e74655ccbd41a2b46b1ec9615aba0301, type: 2}
+      _position: {x: -6, y: -1, z: 0}
+    - _tile: {fileID: 11400000, guid: e74655ccbd41a2b46b1ec9615aba0301, type: 2}
+      _position: {x: -6, y: 0, z: 0}
+    - _tile: {fileID: 11400000, guid: e74655ccbd41a2b46b1ec9615aba0301, type: 2}
+      _position: {x: -6, y: 1, z: 0}
+    - _tile: {fileID: 11400000, guid: e74655ccbd41a2b46b1ec9615aba0301, type: 2}
+      _position: {x: -5, y: -1, z: 0}
+    - _tile: {fileID: 11400000, guid: e74655ccbd41a2b46b1ec9615aba0301, type: 2}
       _position: {x: -5, y: 0, z: 0}
-    - _tile: {fileID: 11400000, guid: e0d57b3c128ba1447920637cdb289530, type: 2}
+    - _tile: {fileID: 11400000, guid: e74655ccbd41a2b46b1ec9615aba0301, type: 2}
-      _position: {x: -4, y: -2, z: 0}
+      _position: {x: -5, y: 1, z: 0}
     - _tile: {fileID: 11400000, guid: e0b1d2d816ae5624c99b09a2bebb2a39, type: 2}
-      _position: {x: -2, y: -4, z: 0}
+      _position: {x: -4, y: -3, z: 0}
-    - _tile: {fileID: 11400000, guid: e0d57b3c128ba1447920637cdb289530, type: 2}
+    - _tile: {fileID: 11400000, guid: e74655ccbd41a2b46b1ec9615aba0301, type: 2}
+      _position: {x: -4, y: -1, z: 0}
+    - _tile: {fileID: 11400000, guid: e74655ccbd41a2b46b1ec9615aba0301, type: 2}
+      _position: {x: -4, y: 0, z: 0}
+    - _tile: {fileID: 11400000, guid: e74655ccbd41a2b46b1ec9615aba0301, type: 2}
+      _position: {x: -4, y: 1, z: 0}
+    - _tile: {fileID: 11400000, guid: e74655ccbd41a2b46b1ec9615aba0301, type: 2}
+      _position: {x: -3, y: -1, z: 0}
+    - _tile: {fileID: 11400000, guid: e74655ccbd41a2b46b1ec9615aba0301, type: 2}
+      _position: {x: -3, y: 0, z: 0}
+    - _tile: {fileID: 11400000, guid: e74655ccbd41a2b46b1ec9615aba0301, type: 2}
+      _position: {x: -3, y: 1, z: 0}
+    - _tile: {fileID: 11400000, guid: e0b1d2d816ae5624c99b09a2bebb2a39, type: 2}
+      _position: {x: -2, y: -3, z: 0}
+    - _tile: {fileID: 11400000, guid: e74655ccbd41a2b46b1ec9615aba0301, type: 2}
+      _position: {x: -2, y: -1, z: 0}
+    - _tile: {fileID: 11400000, guid: e74655ccbd41a2b46b1ec9615aba0301, type: 2}
       _position: {x: -2, y: 0, z: 0}
-    - _tile: {fileID: 11400000, guid: e0d57b3c128ba1447920637cdb289530, type: 2}
+    - _tile: {fileID: 11400000, guid: e74655ccbd41a2b46b1ec9615aba0301, type: 2}
-      _position: {x: 1, y: -3, z: 0}
+      _position: {x: -2, y: 1, z: 0}
-    - _tile: {fileID: 11400000, guid: e0b1d2d816ae5624c99b09a2bebb2a39, type: 2}
+    - _tile: {fileID: 11400000, guid: e74655ccbd41a2b46b1ec9615aba0301, type: 2}
-      _position: {x: 1, y: 1, z: 0}
+      _position: {x: -1, y: -1, z: 0}
-    - _tile: {fileID: 11400000, guid: e0d57b3c128ba1447920637cdb289530, type: 2}
+    - _tile: {fileID: 11400000, guid: e74655ccbd41a2b46b1ec9615aba0301, type: 2}
-      _position: {x: 3, y: 1, z: 0}
+      _position: {x: -1, y: 0, z: 0}
+    - _tile: {fileID: 11400000, guid: e74655ccbd41a2b46b1ec9615aba0301, type: 2}
+      _position: {x: -1, y: 1, z: 0}
     _isInvisible: 0
     _isCollidable: 0
     _isTrigger: 0
@@ -345,22 +209,10 @@ MonoBehaviour:
     _scale: {x: 1, y: 1}
   - _key: Spawners
     _tiles:
-    - _tile: {fileID: 11400000, guid: 4aaf448680c7f8a438a9a5861c622a55, type: 2}
-      _position: {x: -10, y: -4, z: 0}
-    - _tile: {fileID: 11400000, guid: 4aaf448680c7f8a438a9a5861c622a55, type: 2}
-      _position: {x: -10, y: -2, z: 0}
-    - _tile: {fileID: 11400000, guid: 4aaf448680c7f8a438a9a5861c622a55, type: 2}
-      _position: {x: -10, y: 0, z: 0}
-    - _tile: {fileID: 11400000, guid: 4aaf448680c7f8a438a9a5861c622a55, type: 2}
-      _position: {x: -10, y: 2, z: 0}
     - _tile: {fileID: 11400000, guid: 4002377ed7e87b34699f126f2b10c703, type: 2}
-      _position: {x: 10, y: -4, z: 0}
+      _position: {x: -1, y: -2, z: 0}
     - _tile: {fileID: 11400000, guid: 4002377ed7e87b34699f126f2b10c703, type: 2}
-      _position: {x: 10, y: -2, z: 0}
+      _position: {x: -1, y: 2, z: 0}
-    - _tile: {fileID: 11400000, guid: 4002377ed7e87b34699f126f2b10c703, type: 2}
-      _position: {x: 10, y: 0, z: 0}
-    - _tile: {fileID: 11400000, guid: 4002377ed7e87b34699f126f2b10c703, type: 2}
-      _position: {x: 10, y: 2, z: 0}
     _isInvisible: 1
     _isCollidable: 0
     _isTrigger: 0

Assets/Prefabs/UI/BuyableUnitsView/GameObjectPlacementButton.prefab

@@ -298,7 +298,7 @@ RectTransform:
   m_AnchorMin: {x: 0, y: 0}
   m_AnchorMax: {x: 0, y: 0}
   m_AnchoredPosition: {x: 0, y: 0}
-  m_SizeDelta: {x: 40, y: 40}
+  m_SizeDelta: {x: 45, y: 45}
   m_Pivot: {x: 0.5, y: 0.5}
 --- !u!222 &907652128235033335
 CanvasRenderer:
@@ -535,7 +535,7 @@ RectTransform:
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
   m_AnchorMin: {x: 0, y: 0}
   m_AnchorMax: {x: 0, y: 0}
-  m_AnchoredPosition: {x: 18, y: 0}
+  m_AnchoredPosition: {x: 23, y: 0}
   m_SizeDelta: {x: 0, y: 0}
   m_Pivot: {x: 0.5, y: 0.5}
 --- !u!114 &4100105604388853805
@@ -615,7 +615,7 @@ RectTransform:
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
   m_AnchorMin: {x: 0, y: 0}
   m_AnchorMax: {x: 0, y: 0}
-  m_AnchoredPosition: {x: 18, y: 0}
+  m_AnchoredPosition: {x: 23, y: 0}
   m_SizeDelta: {x: 0, y: 0}
   m_Pivot: {x: 0.5, y: 0.5}
 --- !u!114 &4741796700644535934
@@ -996,7 +996,7 @@ RectTransform:
   m_AnchorMin: {x: 0, y: 0}
   m_AnchorMax: {x: 0, y: 0}
   m_AnchoredPosition: {x: 0, y: 0}
-  m_SizeDelta: {x: 40, y: 40}
+  m_SizeDelta: {x: 45, y: 45}
   m_Pivot: {x: 1, y: 1}
 --- !u!114 &6181393584221671793
 MonoBehaviour:
@@ -1011,14 +1011,14 @@ MonoBehaviour:
   m_Name: 
   m_EditorClassIdentifier: 
   m_Padding:
-    m_Left: 0
+    m_Left: 5
-    m_Right: 0
+    m_Right: 5
-    m_Top: 0
+    m_Top: 5
-    m_Bottom: 0
+    m_Bottom: 5
   m_ChildAlignment: 0
   m_Spacing: 0
-  m_ChildForceExpandWidth: 1
+  m_ChildForceExpandWidth: 0
-  m_ChildForceExpandHeight: 1
+  m_ChildForceExpandHeight: 0
   m_ChildControlWidth: 0
   m_ChildControlHeight: 0
   m_ChildScaleWidth: 0
@@ -1209,7 +1209,7 @@ RectTransform:
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
   m_AnchorMin: {x: 0, y: 0}
   m_AnchorMax: {x: 0, y: 0}
-  m_AnchoredPosition: {x: 18, y: 0}
+  m_AnchoredPosition: {x: 23, y: 0}
   m_SizeDelta: {x: 0, y: 0}
   m_Pivot: {x: 0.5, y: 0.5}
 --- !u!114 &5791630491435835906

Assets/Scripts/Drag&Drop/DraggablePlaceholder.cs

@@ -59,9 +59,9 @@ public abstract class DraggablePlaceholder : MonoBehaviour
             Destroy(gameObject);
         }
 
+        _canBePlacedHere = CanBePlacedHere();
         UpdatePosition();
 
-        _canBePlacedHere = CanBePlacedHere();
         ShowValidity();
     }
 
@@ -75,12 +75,10 @@ public abstract class DraggablePlaceholder : MonoBehaviour
 
         if (!_lvlBoundsCache.Contains(mousePos))
         {
-            _canBePlacedHere = false;
             _allRenderers.ForEach(x => x.enabled = false);
         }
         else
         {
-            _canBePlacedHere = true;
             _allRenderers.ForEach(x => x.enabled = true);
         }
         transform.position = mousePos;
@@ -95,6 +93,7 @@ public abstract class DraggablePlaceholder : MonoBehaviour
     public virtual bool CanBePlacedHere()
     {
         return !LevelManager.Instance.Has<ILevelObject>(obj => obj.Position.IsContainedIn(transform.position)) 
+            && _lvlBoundsCache.Contains(transform.position)
             && ResourceManager.Instance.EnoughFor(Rock, Wood, Food);
     }
 

Assets/Scripts/LevelManager/ILevelObject.cs

@@ -7,7 +7,8 @@ public interface ILevelObject
     {
         Tile = 0,
         Prefab = 1,
-        Tilemap = 2
+        Tilemap = 2,
+        Other = 3,
     }
 
     bool IsCollidable { get; }

Assets/Scripts/LevelManager/LevelManager.cs

@@ -14,6 +14,9 @@ public class LevelManager : Singleton<LevelManager>
 {
     string SavePath => Application.dataPath + "/save.txt";
 
+    public event OnLevelLoaded LevelLoaded;
+
+    public delegate void OnLevelLoaded(Level level);
     public delegate void LevelAction(ILevelObject levelObject);
     public delegate bool LevelPredicate<T>(T levelObject) where T : ILevelObject;
     
@@ -161,6 +164,8 @@ public class LevelManager : Singleton<LevelManager>
             tilemapData.LoadToTilemap(tilemap);
             tilemap.transform.SetParent(grid.transform);
         }
+
+        LevelLoaded?.Invoke(level);
         Debug.Log("level loaded successfully");
     }
 
@@ -182,7 +187,6 @@ public class LevelManager : Singleton<LevelManager>
         LoadLevel(_currentLevel, shouldClear);
     }
 
-
     public void SaveFile()
     {
         var list = _levelObjects.Select(obj => obj.ToDictionary()).ToList();
@@ -193,15 +197,16 @@ public class LevelManager : Singleton<LevelManager>
             levelConfig[nameof(ILevelObject.ObjectType)] = nameof(ILevelObject.ObjectType.Tilemap);
             list.Add(levelConfig);
         }
+
+        list.Add(OtherValuesToDict());
+
         string saved = JsonConvert.SerializeObject(list);
         
         File.WriteAllText(SavePath, saved, Encoding.UTF8);
         Debug.Log("game saved successfully");
     }
-
     public void LoadFile()
     {
-
         string saved = File.ReadAllText(SavePath, Encoding.UTF8);
         var dicts = JsonConvert.DeserializeObject<List<Dictionary<string, object>>>(saved);
 
@@ -216,8 +221,14 @@ public class LevelManager : Singleton<LevelManager>
         var tileDicts = dicts.FindAll(x => x[nameof(ILevelObject.ObjectType)].ToString() == nameof(ILevelObject.ObjectType.Tile));
         foreach (var tileDict in tileDicts) CreateTile(tileDict);
 
+        var otherDict = dicts.Find(x => x[nameof(ILevelObject.ObjectType)].ToString() == nameof(ILevelObject.ObjectType.Other));
+        DictToOtherValues(otherDict);
+
+
+        LevelLoaded?.Invoke(_currentLevel);
         Debug.Log("game loaded successfully");
     }
+
     private void CreatePrefab(Dictionary<string, object> dict)
     {
         var name = dict["Name"].ToString();
@@ -239,5 +250,27 @@ public class LevelManager : Singleton<LevelManager>
     {
         TilemapData.FromDictionary(dict);
     }
+    private Dictionary<string, object> OtherValuesToDict()
+    {
+        return new Dictionary<string, object>()
+        {
+            [nameof(ILevelObject.ObjectType)] = nameof(ILevelObject.ObjectType.Other),
+            [nameof(_currentLevel)] = _currentLevel.name
+        };
+    }
+    private void DictToOtherValues(Dictionary<string, object> dict)
+    {
+        // fetch current level
+        var levelName = dict[nameof(_currentLevel)].ToString();
+        var level = Database.Instance.ScriptableObjects[levelName] as Level;
+        _currentLevel = level;
+
+
+    }
+  
+    /// <summary>
+    /// align camera to the rightmost tile of the tilemap
+    /// </summary>
+   
     #endregion
 }

Assets/Scripts/LevelManager/LevelManagerScript.cs

@@ -1,25 +1,12 @@
 using UnityEngine;
 using GatherAndDefend.LevelEditor;
 
-public class LevelManagerScript : MonoBehaviour
+public class LevelManagerScript : SingletonBehaviour<LevelManagerScript>
 {
     public Level firstLevel;
-    private static LevelManagerScript _instance; 
 
-    void Awake()
+    protected override void Awake()
     {
-        //we don't want to ever have two LevelManagerScript at the same time in the game.
-        //We prevent that by erasing any instances that are not registered as our main instance.
-        if (!_instance)
-        {
-            _instance = this;
-        }
-        else
-        {
-            Destroy(gameObject);
-            return;
-        }
-
         DontDestroyOnLoad(gameObject);
         if (!firstLevel) throw new System.Exception("there is no first level set in the level manager script");
         LevelManager.Instance.LoadLevel(firstLevel, true);

Assets/Scripts/LevelManager/LevelTile.cs

@@ -8,6 +8,7 @@ using UnityEngine.Tilemaps;
 /// </summary>
 public abstract class LevelTile : TileBase, ILevelObject
 {
+    public const string project_name = "Gather And Defend";
     [SerializeField]
     private Sprite _sprite;
     public Sprite Sprite => _sprite;

Assets/Scripts/Tiles/ResourceTile.cs

@@ -2,7 +2,7 @@ using System.Collections.Generic;
 using UnityEngine;
 using static Extensions;
 
-[CreateAssetMenu(menuName = "Gather And Defend/Resource Tile")]
+[CreateAssetMenu(menuName = project_name + "/" + nameof(ResourceTile))]
 public class ResourceTile : LevelTile
 {
     [SerializeField]

Assets/Scripts/Tiles/SpawnerTile.cs

@@ -1,7 +1,7 @@
 using System.Collections.Generic;
 using UnityEngine;
 
-[CreateAssetMenu(menuName = "Gather And Defend/Spawner Tile")]
+[CreateAssetMenu(menuName = project_name + "/" + nameof(SpawnerTile))]
 public class SpawnerTile : LevelTile
 {
     [SerializeField]

Assets/Tilemaps/LevelEditorPalette.prefab

@@ -107,16 +107,26 @@ Tilemap:
       m_TileObjectToInstantiateIndex: 65535
       dummyAlignment: 0
       m_AllTileFlags: 0
-  - first: {x: -1, y: 0, z: 0}
+  - first: {x: 1, y: -1, z: 0}
     second:
       serializedVersion: 2
-      m_TileIndex: 0
+      m_TileIndex: 6
       m_TileSpriteIndex: 2
       m_TileMatrixIndex: 0
       m_TileColorIndex: 0
       m_TileObjectToInstantiateIndex: 65535
       dummyAlignment: 0
-      m_AllTileFlags: 1073741825
+      m_AllTileFlags: 0
+  - first: {x: -1, y: 0, z: 0}
+    second:
+      serializedVersion: 2
+      m_TileIndex: 0
+      m_TileSpriteIndex: 6
+      m_TileMatrixIndex: 0
+      m_TileColorIndex: 0
+      m_TileObjectToInstantiateIndex: 65535
+      dummyAlignment: 0
+      m_AllTileFlags: 0
   - first: {x: 0, y: 0, z: 0}
     second:
       serializedVersion: 2
@@ -147,20 +157,10 @@ Tilemap:
       m_TileObjectToInstantiateIndex: 65535
       dummyAlignment: 0
       m_AllTileFlags: 0
-  - first: {x: 1, y: 1, z: 0}
-    second:
-      serializedVersion: 2
-      m_TileIndex: 6
-      m_TileSpriteIndex: 4294967295
-      m_TileMatrixIndex: 0
-      m_TileColorIndex: 0
-      m_TileObjectToInstantiateIndex: 65535
-      dummyAlignment: 0
-      m_AllTileFlags: 0
   m_AnimatedTiles: {}
   m_TileAssetArray:
   - m_RefCount: 1
-    m_Data: {fileID: 11400000, guid: a387250a316b97e43be83b85980101e1, type: 2}
+    m_Data: {fileID: 11400000, guid: e74655ccbd41a2b46b1ec9615aba0301, type: 2}
   - m_RefCount: 1
     m_Data: {fileID: 11400000, guid: ef5a154519b23a34aaded32e86bf7f2f, type: 2}
   - m_RefCount: 1
@@ -177,7 +177,7 @@ Tilemap:
   - m_RefCount: 1
     m_Data: {fileID: 21300000, guid: 5c630d8b4d37f5d4f974d38f670ad5c1, type: 3}
   - m_RefCount: 1
-    m_Data: {fileID: 21300000, guid: 6298844400e212d40bce870425ac2a5b, type: 3}
+    m_Data: {fileID: 21300000, guid: f67e7f54162405141b42d32ef8df76ad, type: 3}
   - m_RefCount: 1
     m_Data: {fileID: 21300000, guid: ccca3e050cb082b45af0a099790463f6, type: 3}
   - m_RefCount: 1
@@ -186,6 +186,8 @@ Tilemap:
     m_Data: {fileID: 21300000, guid: 77a39e873655d3c4b93d0b7696397b83, type: 3}
   - m_RefCount: 1
     m_Data: {fileID: 21300000, guid: b85a4b2ec6433d04895612d791edc260, type: 3}
+  - m_RefCount: 1
+    m_Data: {fileID: 21300000, guid: 6298844400e212d40bce870425ac2a5b, type: 3}
   m_TileMatrixArray:
   - m_RefCount: 7
     m_Data:
@@ -281,7 +283,7 @@ TilemapRenderer:
   m_Mode: 0
   m_DetectChunkCullingBounds: 0
   m_MaskInteraction: 0
---- !u!114 &4236727698057346379
+--- !u!114 &5180442264077207259
 MonoBehaviour:
   m_ObjectHideFlags: 0
   m_CorrespondingSourceObject: {fileID: 0}

Assets/Tiles/Mountain.asset

@@ -9,11 +9,8 @@ MonoBehaviour:
   m_GameObject: {fileID: 0}
   m_Enabled: 1
   m_EditorHideFlags: 0
-  m_Script: {fileID: 11500000, guid: 84b05f2a26f63da46a1028488482d079, type: 3}
+  m_Script: {fileID: 11500000, guid: 9ff04aa2e904a19458fd5b144c230054, type: 3}
   m_Name: Mountain
   m_EditorClassIdentifier: 
   _sprite: {fileID: 21300000, guid: 6298844400e212d40bce870425ac2a5b, type: 3}
-  _isCollidable: 0
+  _isCollidable: 1
-  _yieldPrefab: {fileID: 6962989255644195630, guid: 484f0eca1c74ae34694692de56a36739, type: 3}
-  _yieldSpeed: 0.1
-  _randomPositionConfig: 0.5

Assets/Tiles/Mountain.asset.meta

@@ -1,5 +1,5 @@
 fileFormatVersion: 2
-guid: e0d57b3c128ba1447920637cdb289530
+guid: e74655ccbd41a2b46b1ec9615aba0301
 NativeFormatImporter:
   externalObjects: {}
   mainObjectFileID: 11400000

Assets/icon_card_archer.png.meta

@@ -1,147 +0,0 @@
-fileFormatVersion: 2
-guid: 178d3231a9182834aa1a4394bd40b644
-TextureImporter:
-  internalIDToNameTable: []
-  externalObjects: {}
-  serializedVersion: 12
-  mipmaps:
-    mipMapMode: 0
-    enableMipMap: 0
-    sRGBTexture: 1
-    linearTexture: 0
-    fadeOut: 0
-    borderMipMap: 0
-    mipMapsPreserveCoverage: 0
-    alphaTestReferenceValue: 0.5
-    mipMapFadeDistanceStart: 1
-    mipMapFadeDistanceEnd: 3
-  bumpmap:
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-    externalNormalMap: 0
-    heightScale: 0.25
-    normalMapFilter: 0
-  isReadable: 0
-  streamingMipmaps: 0
-  streamingMipmapsPriority: 0
-  vTOnly: 0
-  ignoreMasterTextureLimit: 0
-  grayScaleToAlpha: 0
-  generateCubemap: 6
-  cubemapConvolution: 0
-  seamlessCubemap: 0
-  textureFormat: 1
-  maxTextureSize: 2048
-  textureSettings:
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-    filterMode: 1
-    aniso: 1
-    mipBias: 0
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-    wrapV: 1
-    wrapW: 1
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-  lightmap: 0
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-  spriteExtrude: 1
-  spriteMeshType: 1
-  alignment: 0
-  spritePivot: {x: 0.5, y: 0.5}
-  spritePixelsToUnits: 100
-  spriteBorder: {x: 0, y: 0, z: 0, w: 0}
-  spriteGenerateFallbackPhysicsShape: 1
-  alphaUsage: 1
-  alphaIsTransparency: 1
-  spriteTessellationDetail: -1
-  textureType: 8
-  textureShape: 1
-  singleChannelComponent: 0
-  flipbookRows: 1
-  flipbookColumns: 1
-  maxTextureSizeSet: 0
-  compressionQualitySet: 0
-  textureFormatSet: 0
-  ignorePngGamma: 0
-  applyGammaDecoding: 0
-  cookieLightType: 0
-  platformSettings:
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-    buildTarget: DefaultTexturePlatform
-    maxTextureSize: 2048
-    resizeAlgorithm: 0
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-    textureCompression: 1
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-    buildTarget: Standalone
-    maxTextureSize: 2048
-    resizeAlgorithm: 0
-    textureFormat: -1
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-    overridden: 0
-    androidETC2FallbackOverride: 0
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-    buildTarget: Android
-    maxTextureSize: 2048
-    resizeAlgorithm: 0
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-    textureCompression: 1
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-    overridden: 0
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-    buildTarget: WebGL
-    maxTextureSize: 2048
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