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04-19-24 10:13 PM |
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| 0 users currently in SMW Hacking | 2 guests |
| Main - SMW Hacking - Changing springboard jump height. | New thread | New reply |
| FirePhoenix0 |
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 Bullet Bill Level: 50 Posts: 431/505 EXP: 898310 Next: 49007 Since: 02-23-07 Last post: 5513 days Last view: 5496 days |
I'm looking through the disassembly of the springboard and I'm not sure what I would have to change to make two custom sprite springboards that launch Mario to different heights in the air. The original one launches Mario up 12 tiles. I'm thinking that I might want the first custom one to launch Mario up 16 tiles and the second one up only 8 tiles. How would I go about doing this? ____________________ |
| GreyMaria |
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>implying even the Japanese understand the Japanese Level: 105 Posts: 344/2851 EXP: 11914462 Next: 347798 Since: 07-13-07 Last post: 4491 days Last view: 4460 days |
Shot in the dark, but I think the springboard sets Mario's Y velocity. A good place to start would probably be identifying Mario's Y velocity at the point he departs from the springboard. ____________________ we're currently experiencing some technical difficulties |
| FirePhoenix0 |
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Bullet Bill Level: 50 Posts: 432/505 EXP: 898310 Next: 49007 Since: 02-23-07 Last post: 5513 days Last view: 5496 days |
I'm not entirely sure what I'm doing with this but I believe this is the section of code I'll need to change.
ADDR_01E6A7:
I did some quick calculations of the height I want and tried changing the $7D to $9C. When I did however, Mario gets stuck on the springboard and bounces up and down without actually leaving the springboard. ____________________ |
| Skreeny |
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 Cobrat Level: 56 Posts: 514/653 EXP: 1321060 Next: 77116 Since: 02-21-07 Last post: 5334 days Last view: 4835 days |
It's probably a signed value. I don't think you'll be able to put it above $7F, unfortunately enough. |
| smkdan |
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 Ninji Level: 36 Posts: 75/238 EXP: 288496 Next: 19614 Since: 05-26-07 Last post: 4056 days Last view: 4005 days |
$7D and $9C are RAM addresses. You're changing the target address altogether.
I took a quick look at it. The LDY.B #$80 will change the height. Turns out 80h is the highest value actually, and increasing it will lower his jump height. Values from 00-7F will ground him to the spring board (when you hold B). However it's interpreted, there's a bunch of sign bit conditionals. |
| Mattrizzle |
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 Red Cheep-cheep Level: 33 Posts: 157/202 EXP: 226219 Next: 2960 Since: 04-21-07 From: United States Last post: 2414 days Last view: 2374 days |
| GreyMaria |
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>implying even the Japanese understand the Japanese Level: 105 Posts: 346/2851 EXP: 11914462 Next: 347798 Since: 07-13-07 Last post: 4491 days Last view: 4460 days |
Mario's Y Speed seems to be negative when he is traveling up.
That's a good tip to know when you're scripting. Couldn't you hack a routine to wait about six to twelve frames then set his Y speed again? ____________________ we're currently experiencing some technical difficulties |
| FirePhoenix0 |
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Bullet Bill Level: 50 Posts: 433/505 EXP: 898310 Next: 49007 Since: 02-23-07 Last post: 5513 days Last view: 5496 days |
I figured it out thanks to you guys. Too bad that I can't set it to jump higher. I worked around that now by making a springboard that launches you up 6 blocks and another one that launches you 9 blocks.
It turns out that setting the value to #$C0 makes Mario bounce to one third of his height, or 4 blocks. So I tried setting it to A0 and got 7 blocks height. From there I just did a bit of guesswork and setting it to A7 achieves a height of 6 blocks. For the other one I set it to #$90. ____________________ |
| Main - SMW Hacking - Changing springboard jump height. | New thread | New reply |
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