However i found this free fracture asset that doesn't require blender:
https://www.assetstore.unity3d.com/#/content/7193
If i attatch the asset to a cube, it breaks when it hit something. I've tried to add a FSM to when i click the mouse, it would trigger this collision, but it doesn't work. Any idea what could be done?
I played with that fracture asset a little bit, just adding force to the fracturable cube does not break it, seems it needs a "real" collision from another object.
If you add a lot of force it just propels into the air and only breaks when it hits the ground or other object.
I found no way to create a "fake" collision from nothing with Playmaker just by clicking... (But I am just a beginner, maybe someone could correct me here)
Of course you can use Playmaker to script some objects to hit the cube.
Also, it seems to need quite a little bit of force, I think it is configured to simulate some kind of soft stone? Just a tap does not break the cube.
I think this free version is a bit limited (can't configure much), the pro version is probably easier to work with Playmaker.
(If you just want to test it you can use the "Drag Rigidbody" script mentioned in that video to drag the cube and hit it against some other objects)