Double Jump

A double jump is an action that typically follows an earlier jump with more height. Specifically, a double jump can be entered by pressing A while in:

• A Single Jump Land
• A Sideflip Land
• A Freefall Land

Double Jump
Properties
Official Name	secJump (Second Jump)
Hex	0x03000881
Action Flags	Air, Allow Vertical Wind Action, Control Jump Height
Action Group	Airborne
ID	0x081
Transitions
Into	Universal interactions: Twirling, Pre-cancel: Single Jump, Airborne cancels: Water Plunge, Squished, Vertical Wind, non cancel: Dive, Jump Kick, Ground Pound, air step: Double Jump Land, Air Hit Wall, Backwards Air Kb, Soft Bonk, Ledge Grab, Start Hanging, Lava Boost
Out of	Single Jump Land, Sideflip Land, Freefall Land
Other
Animation	0x4C, 0x4D

Behavior

As with all airborne actions, a variety of "cancels" are checked prior to actually performing the jump action. See Single Jump#Airborne cancels

But before even that, if the quicksand timer is not 0 and quicksand depth is more than 1, it cancels to Jump.

At this point, two more things happen prior to the jump action:

• Mario's quicksand depth is set to 0.
• Mario plays a falling noise if he has fallen more than 1150 units from his peak.

With the jump action occurring, the following happens:

1. Mario's vertical speed is set to $52+{\frac {\text{hspeed}}{4}}$.
2. If Mario's vertical speed is not negative, his animation is set to the double jump rising animation. Otherwise, it is set to the double jump falling animation.
3. If the B button is pressed, Mario will either enter the dive action if his speed is greater than 28 or the jump kick action otherwise.
4. If the Z button is pressed, Mario will enter the ground pound action.
5. Mario performs the other noises for the jump.
6. Now, Mario performs the quarter-frame movement via a full common air step. The landing action is a double jump land action and the check has both the "Check Ledge Grab" and "Check Hang" flags.