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| Acmlm's Board - I3 Archive - SMW Hacking - A few custom block question |
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JaSp Shyguy                     Since: 11-18-05 From: Paris, France Last post: 6301 days Last view: 6301 days |
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| Well, since I've been searching without having found anything successful yet, I'm simply asking it here :
Is there a way to get block which have, for example, the top-two 8*8 tiles as blank and the bottom ones as cement ? So basically, I'd like to move the collision detection point from 8 pixels off, for a particulary side of the block (top, bottom, left or right). I've been trying using custom block, playing with the below, above and sides offsets but they turn out not to be what I was thinking... Another question, what exactly are the reloc offsets in blocktool ? I didn't manage to find out how they work in the already made custom blocks using them. Thanks for your help  |
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Sukasa Birdo Not quite as active as before. Xkeeper supporter Xk > ||bass I IP Banned myself! Twice!  Since: 11-17-05 From: Somewhere over there Last post: 6301 days Last view: 6300 days |
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| Shouldn't be too hard... check to see if bit 3 ($08) is set, and if so act like a cement block, otherwise act like open space from the top and sides, and a cement block from the bottom. | |||
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JaSp Shyguy Since: 11-18-05 From: Paris, France Last post: 6301 days Last view: 6301 days |
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I'm kind of confused here...I'd have to check for bit 3 of which address ?  |
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Smallhacker Super Koopa I AM A Group Of Officially Frustrated Younglings, G.O.O.F.Y. MEMBER |
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| Mario's Y position. (If there's two such bytes, the lower byte is the correct one.) | |||
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Sukasa Birdo Not quite as active as before. Xkeeper supporter Xk > ||bass I IP Banned myself! Twice! Since: 11-17-05 From: Somewhere over there Last post: 6301 days Last view: 6300 days |
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| whoops, I forgot to mention that bit. thanks SH. | |||
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JaSp Shyguy Since: 11-18-05 From: Paris, France Last post: 6301 days Last view: 6301 days |
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| Is there a RAM address for Mario's Y relative position to the block (because I can't find one on SMWC) or should I use the absolute one (i.e. I'd have to create several custom blocks according to their position in the level, that wouldn't be very neat...) ?
(sorry for asking so many questions, but well, if someone has a clue about it it would be way quicker than having to research it on my own) |
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Smallhacker Super Koopa I AM A Group Of Officially Frustrated Younglings, G.O.O.F.Y. MEMBER |
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| You're supposed to use the absolute Y coordinate, check if bit 3 is set, make it solid if it is, otherwise not solid. | |||
BMF54123 Since: 11-18-05 From: MOOGLES Last post: 6300 days Last view: 6300 days |
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I have a feeling this method would either kill Mario or push him out of the block. 
Perhaps we need to study how slopes work... |
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JaSp Shyguy Since: 11-18-05 From: Paris, France Last post: 6301 days Last view: 6301 days |
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| As expected, it doesn't work ; this way of determining collision (writing to $1693) doesn't seem to allow pixel-perfect precision but only 16*16 block precision. I'll try to take a look at how slopes and the like work. | |||
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Sukasa Birdo Not quite as active as before. Xkeeper supporter Xk > ||bass I IP Banned myself! Twice! Since: 11-17-05 From: Somewhere over there Last post: 6301 days Last view: 6300 days |
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| Well... SMW MUST store mario's pixel-by-pixel X/Y locations somewhere.
Anyways, what does it do, when you say it fails? |
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JaSp Shyguy Since: 11-18-05 From: Paris, France Last post: 6301 days Last view: 6301 days |
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| Well I tried several addresses related to mario's Y position, and I came up with different cases. Usually, either the whole block acts like a solid block, either it acts as a blank one. It also happenend to have a blank block that would act like a solid one when Mario was ducking. Moreover, it was screwing up when approaching other blocks and such, resulting in killing Mario sometimes...
I've even tried to directly write to the Y position, but then Mario can't walk and well, it's not convenient at all anyway. I'm still trying to figure out how slopes work, so far I haven't found anything interesting, it seems that $91 is used as a buffer that then writes to $96 (Mario's Y position, the one that change his position when you change its value), but changing $91 doesn't do anything and removing the opcodes related make strange things (Mario kind of bounces on the slopes...) I'll keep this updated as soon as I find something interesting. |
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HyperHacker Star Mario Finally being paid to code in VB! If only I still enjoyed that. <_< Wii #7182 6487 4198 1828 Since: 11-18-05 From: Canada, w00t! My computer's specs, if anyone gives a damn. STOP TRUNCATING THIS >8^( Last post: 6301 days Last view: 6301 days |
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| $94 and $96 should be Mario's pixel-specific X and Y position in 16 bits. Were you maybe checking the high byte? | |||
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JaSp Shyguy Since: 11-18-05 From: Paris, France Last post: 6301 days Last view: 6301 days |
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| Ok so I finally found out how to make the game think that Mario is standing, but I need to know if there might be a way to get the block's vertical position on which Mario is ? It would avoid me to create several different custom blocks routines, according to their position in the level, that write absolute values to Mario's vertical position. |
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