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Trampoline (portable springboard) (33, rev. 29)
By  KingYoshi on 05-02-16, 04:05 pm
Category 'Platforms and ropes', known, fully documented
An item used to make Mario jump higher. Can be carried by Mario. Objects can push it (but only in later versions?).

Bounces the player up by 6 tiles (11 if mini).
The big version bounces the player up by 18 tiles (29 if mini).

The pickup hitbox for the giant springboard is far too large and extends even above it, which makes you pick it up if you're holding B and don't press A in time when springing off it. (hitbox information & text: skawo)
Data files:
• /enemy/jump_step.nsbmd
Sprite fields:
Shift ½ block right: checkbox at nybble 10 with mask 1
Larger: checkbox at nybble 11 with mask 1. Unused. (Can get stuck in walls)
Trampoline (portable springboard) (33, rev. 30)
By  Hiccup on 04-18-18, 10:19 am
Category 'Platforms and ropes', known, fully documented
An item used to make Mario jump higher. Can be carried by Mario. Objects can push it (but only in later versions?).

Bounces the player up by 6 tiles (11 if mini).
The big version bounces the player up by 18 tiles (29 if mini).

The pickup hitbox for the giant springboard is far too large and extends even above it, which makes you pick it up if you're holding Y and don't press B in time when springing off it. (hitbox information & text: skawo)
Data files:
• /enemy/jump_step.nsbmd
Sprite fields:
Shift ½ block right: checkbox at nybble 10 with mask 1
Larger: checkbox at nybble 11 with mask 1. Unused. (Can get stuck in walls)