Movement and physics

Use the events under Actor > Physics to change a particular setting without replacing unrelated settings.

Event	Target and effect
Set Gravity	Player or actor; changes gravity.
Set Jump Speed	Player; changes jump impulse speed.
Set Maximum Fall Speed	Player or actor; caps downward speed.
Set Air Jumps	Player; 0 allows grounded/ladder jumps, a positive value adds that many air jumps, and -1 permits unlimited air jumps.
Set Diagonal Movement	Player; enables or disables simultaneous horizontal/vertical input movement.
Reset Physics	Player or actor; restores the target's physics defaults.
Stop Physics	Stops the target's active physics behavior.
Apply Vertical Impulse	Applies a vertical impulse using the selected target and event settings.

Player defaults are gravity 0.25, jump speed 5, maximum fall speed 6, no air jumps and diagonal movement enabled. Choose the target explicitly; player-only settings do not apply to an NPC simply because it is selected in the scene.

Platformer movement uses gravity, grounded checks, platforms and ladders. Configure the collision box and scene collision geometry before tuning jumps. Scripted Move Actor and Move To events also expose movement and collision settings; inspect their target, destination, speed and available path options instead of assuming they use the player's input bindings.

Use the X/Y unit selectors for events that expose coordinates: a tile is 16 pixels, and each axis has its own unit. Verify slopes, platform edges, ladders, air jumps and scene transitions in a ROM. Physics is scene-local unless a particular event explicitly says otherwise.

See Actors and interactions, Controls and Event reference.