Laser 'n Monster

Hello, it's a little game a make in 2 days, I called it "Laser 'n Monster".

The Squares  upper, is the Map.
The Squares lower, is your Inventory.

First, click on an ellement in you Inventory.
Second, clikc on a square in the Map.

The Canone can be set on a free square, and shoot a laser in one direction.
The Miror can be set on a free square, and can reflect a laser.
The Rotate can be set on a square busy, and rotate the object in the square (90degres clockwise).
The Breaker can be set on a square busy, and destroy the object in the square.

When your laser shoot a monster, your score increase (it increase more if the laser was traveling long a distance before shoot the monster), also if you shoot many monster with the same laser the score increase exponentialy for doing combo.
When a monster was kill by laser, an other monster re-spawn in a random square, and you took a new random item in inventory (if you'r lucky, you can have two).

The code is in full in JS so you can see it in the browser.

Have fun.