Bouncing Ball But It Plays [Song]: How It's Made
A full build of the format that made this genre, using Rhythmic mode with the Breaking Rings add-on.
In This Tutorial
What the Format Actually Is
The format is Rhythmic mode with the Breaking Rings add-on turned on, which the engine runs as a rhythmic escape. A single ball works its way outward through a stack of rings. Every wall contact plays the next note of the song, and every ring it breaks through is a visible checkpoint in the melody. The payoff is that sound and progress advance together: the viewer hears the tune getting further along and sees the ball getting further out, so the two reinforce each other.
- •Build it from the Add-ons, not a preset. Engine tab, turn on Music Sync and Breaking Rings.
Setting Up the Ring Stack
Number of Rings accepts 1 to 100 and is the main lever on clip length. Around 12 to 25 rings suits a short-form clip. Gap Size accepts 5 to 100 and sets how wide the opening in each ring is, so smaller means more tension and a longer run. Ring Speed accepts 0 to 20 and rotates the stack, which is what stops the ball finding a straight line out. Ring Spacing accepts 10 to 100. Auto-Sync Gaps, in Rhythmic Mode Settings, lines the gaps up with the melody so breakthroughs land musically rather than at random.
- →Number of Rings: 1 to 100
- →Gap Size: 5 to 100
- →Ring Speed: 0 to 20, step 0.1
- →Ring Spacing: 10 to 100
- →Opposite Gaps: 0 to 4, each 5 to 100 wide
Keeping the Melody Clean
A ball rattling in a narrow gap will fire a burst of notes and lose the tune. Set Min Bounce Spacing in Rhythmic Mode Settings to somewhere between 80 and 200 milliseconds so contacts inside a single rattle collapse into one note. Add Min Speed Cap so glancing scrapes along a ring wall do not sound at all. Between them these two turn a noisy run into a clean line, and they matter more than any visual setting on this format.
- •If notes still double up, raise Min Bounce Spacing before you touch the physics. It is the direct fix.
- •Anti-Stall Force in Advanced Physics, range 0 to 10, rescues a ball that has settled into a corner.
The Shield Ring
Rhythmic Escape has an optional Shield Ring that sits inside the stack and has to be destroyed before the ball can start escaping. Shield Radius accepts 20 to 400. Shield Destroy Mode lets you require either a number of hits or a number of seconds, and the paired input accepts 1 to 100. The shield buys you a defined opening act: the melody starts, the tension builds, and the run proper begins when the shield goes. It is the cleanest way to control the first few seconds of the clip.
- •Set the shield to break around the point where the melody hook starts, so the two land together.
Making the Breakthroughs Read
The ring counter is what tells a viewer how far along the run is. It has a Position setting including Center, Top Center, Bottom Center and Follow Ball, a Text Scale from 0.1 to 5, opacity, colour, border width up to 20, a shadow blur up to 50, and a font family and weight. Put it at Top Center at a scale a viewer can read on a phone. In the Arts tab, Collision Effects add a particle burst on impact, with Particles from 1 to 100, Duration from 100 to 2000 milliseconds and Scale from 0.1 to 5.
- →Ring counter Text Scale: 0.1 to 5.0 | Opacity: 0 to 1
- →Ring counter positions: Center, Top Center, Bottom Center, Follow Ball, None
- →Collision Effects: Particles 1 to 100, Duration 100 to 2000 ms, Scale 0.1 to 5.0
Hitting a Target Length
The Seed Generator in the Physics tab solves the problem of a run that never ends at the right time. Set a Target Escape Time between 10 and 180 seconds and it searches for a starting seed whose run finishes near that mark, within the offset window you set. This is the difference between recording twenty takes hoping for a good ending and getting a clip that lands where you planned. There is a dedicated tutorial on it linked from the hub.
- •Generate the seed after you have finished tuning physics. Changing gravity or bounciness invalidates the search.
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