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Blue Cataquacks are also known as Paihanas, Piahanas, or Pihanas. Red Cataquacks are also known as Chuhanas. Source

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Original Post

Chuhana Mechanics

Now that the Chuhana segment in the 120 Shine TAS is complete, I’ve compiled a memo of its properties for future reference.

Information provided by goldfire.

RNG-Consuming Elements

Chuhana uses RNG in the following three functions:

• willFall: Assigns a target to each mirror's polygonal vertex.
• setGoal: When Mario gets within 100 units of the target, the Chuhana changes its facing direction.
• isCollidMove: When two Chuhanas are in contact, the one with the lower ID will reassign its target and perform other adjustments.

Behavior and Properties

• When a Chuhana is stunned with water, all Chuhanas walking on that mirror will set their target to Mario's position at the time the water was sprayed. Even the stunned Chuhana itself faces that target. However, once it starts walking again, it doesn't walk toward that target—it heads toward Mario’s current position.
• Each individual Chuhana's walking speed is determined randomly upon stage load, ranging from 1.0 to 3.0. Their turning speed is also randomized between 2.2 and 2.5.
• The game checks whether a Chuhana is standing near the edge of a mirror. If it's considered to be near the edge and you spray it with water, it will enter a bracing state (resisting movement). What isn't fully understood yet is whether the Chuhana will move toward Mario after this bracing state ends.

willFall

willFall is a critical function that controls Chuhana movement. Until this function is triggered, a Chuhana will continue walking toward its current target.

For willFall to activate, two conditions must be met:

1. The Chuhana must be outside a spherical range set per mirror.
2. OnPanelTime must be 21 or higher.

OnPanelTime increases by 1 every quarter frame (QF), but only while the Chuhana is walking. When it exceeds 21, it loops within the positive range. When willFall is triggered, OnPanelTime is set to -100. When setGoal is triggered, it’s set to 400.