This setup shows you how to destroy a fractured wall with a wrecking ball. A sphere falls down and crashes into the wall, and destroys it. A MultiJoint constraints the sphere to the mounting and acts like a rope.
The scene setup with the wrecking ball, a prefractured wall, and MultiJoints.
Here is the nodes list:
- 2 “Sphere” objects (wrecking ball, steering geometry)
- 3 “Cube” objects (wall, mounting, ground)
- 1 “Null” object (locator)
- 1 “Gravity” daemon
- 2 “MultiJoint” nodes
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All scene elements can be added from RealFlow's “Edit” menu:
- Add > Objects | Daemons
RealFlow nodes can be moved, scaled, and rotated with the W, R, and E keys.
Imported objects from SD files have to be unlocked before they can be transformed with Selected object > Node Params > Node > SD ↔ Curve
Viewport perspective is changed with the 1, 2, 3, and 4 keys.
Shading modes are toggled with the 7, 8, 9, and 0 keys.
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Now, add a MultiJoint and open its “Creation” panel under “Node Params”:
Objects A > Cube02Sphere01
Objects B > Sphere01Cube02
Creation mode > At Locators Positions
Locators > Null01
Create/Recreate
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Select the wall node (“Cube02”).
Open the “Voronoi by Steering Geometry” tool from the “Tool Bar”.
Enter the values as shown below and click on “OK”.
Delete the “Sphere02” and “Cube02” objects – they are not needed any longer.
Change the new object's “Dynamics” mode to “Active rigid body”.
Reconnect the Wall's Fragments
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Add another MultiJoint node (“MultiJoint02”).
Open the MultiJoint's “Creation” panel under “Node Params”.
Objects A > Cube03, Cube01_fractured01, Cube03
Objects B > > Cube03, Cube01_fractured01, Cube03
Create/Recreate
Forces > Force max mode > Constant limit
@ Max force > 150000
Collisions > Enable if break > Yes
Break > Break if distance exceeded > Yes
Simulate
Click on “Simulate” to see the results. Play with different “@ Max force” settings of the “MultiJoint02” node to get different degrees of destruction.
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