Mechanic · movement · platformer

Stairs

Diagonal stairs that a character moves along in their own state, at a set speed and in set steps, instead of walking and jumping.

stubAlso: staircase, stair climbing, stairwaysUpdated 2026-10-21
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Stairs move a character diagonally by their own rules. In Dracula’s Curse a step sets the speed to 0.5 px/frame on each axis and lasts 15 frames1.

See also

Mentioned in

Games

GameYearHowNote
Castlevania III: Dracula's Curse1989Steppedstairs are climbed one step at a time, at a fixed pace
Every claim about this mechanic, by game (1)
Castlevania III: Dracula's Curse 1989Dracula's Curse moves a character on stairs in steps; each step sets the speed to 0.5 px/frame across and 0.5 px/frame up or down the stairs, and the climbing state counts 15 frames before the step ends.Code

References

  1. ^ abDracula's Curse moves a character on stairs in steps; each step sets the speed to 0.5 px/frame across and 0.5 px/frame up or down the stairs, and the climbing state counts 15 frames before the step ends.Codevinheim3/castlevania3-disasm
    How we know
    4706	lda playerStairsMovementSpeeds.w, y
4707	sta wEntityHorizSpeed.w
⋮
4713	sta wEntityVertSubSpeed.w
⋮
4720	lda playerStairsPixelsToStep.w
4721	sta wPixelsToWalkToStairs.w
⋮
4728	.db $0f
⋮
4737.else
4738	.db $00 $80 $00 $80
⋮
4741	.db $ff $80 $ff $80
    code/playerStateProcessing_b1c.s lines 4686–4742 at 3272648 · upstream ↗
    4526playerState14_stairClimb:
    code/playerStateProcessing_b1c.s lines 4526–4541 at 3272648 · upstream ↗

    Checked against the evidence by its author, an AI model, 2026-10-21.

    Checked by a second AI model, 2026-10-21.

    In the claim ledger

Sources

Code