Post by Amaraticando

Posted: 4/19/2017 2:02 PM

Post subject: Hitboxes

Quote

RainbowSprinklez

He/Him

Joined: 10/2/2015
Posts: 91

I'm not sure if this is in the right place. What my endgoal is to write a lua script that displays hitboxes, but I'm not sure how to accomplish this. Do I have to find EVERY enemies hitbox? Cause I can do that. Or does there exist a 'master' code that I can access? My game is Donkey Kong Country btw.

I didn't kill donkey, I saved it. Current projects: Misc Donkey hacks :) Past projects: Pacifist DKC1 DKC1 Entrance randomizer DKC2 Entrance randomizer DKDC (a troll hack of DKC1) DKC1 Enemy randomizer (among other things)

Posted: 4/19/2017 9:39 PM

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RainbowSprinklez

He/Him

Joined: 10/2/2015
Posts: 91

Like, if I were TASing SMW,, could I just use one set of values for ALL koopas? Or do I go unique for each instance?

I didn't kill donkey, I saved it. Current projects: Misc Donkey hacks :) Past projects: Pacifist DKC1 DKC1 Entrance randomizer DKC2 Entrance randomizer DKDC (a troll hack of DKC1) DKC1 Enemy randomizer (among other things)

Posted: 4/19/2017 9:46 PM

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jlun2

Skilled player (1708)

Joined: 9/17/2009
Posts: 4952
Location: ̶C̶a̶n̶a̶d̶a̶ "Kanatah"

Depends on the game. Some games I know of (Spongebob GBA games for instance) have all of the NPC addresses in a fixed location, right next to each other, so a for loop can loop through them all. Games like Monster House (GBA) have the addresses "hop" around every single floor, so you have to find a way to locate them. Normally, I don't even look for hitboxes. I just find their X/Y values, then draw an approximate square around them, depending on what enemy they are.

LLCoolDave wrote:

This seems to be competing for the "Worst looking TAS of 2011" Award.

Posted: 4/20/2017 12:00 AM

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RainbowSprinklez

He/Him

Joined: 10/2/2015
Posts: 91

jlun2 wrote:

Normally, I don't even look for hitboxes. I just find their X/Y values, then draw an approximate square around them, depending on what enemy they are.

That sounds pretty tedious, but I guess that is the nature of TASing.

I didn't kill donkey, I saved it. Current projects: Misc Donkey hacks :) Past projects: Pacifist DKC1 DKC1 Entrance randomizer DKC2 Entrance randomizer DKDC (a troll hack of DKC1) DKC1 Enemy randomizer (among other things)

Posted: 4/20/2017 2:32 AM

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brunovalads

Editor, Player (182)

Joined: 4/7/2015
Posts: 330
Location: Porto Alegre, RS, Brazil

Each game handles hitboxes differently, you have to make a RAM/ROM mapping to find out which addresses handle this. In Yoshi's Island, for example, there's a table for sprites' hitboxes widths and heights: $701BB6 (96 bytes) 24 2-word entries, one sprite per: Word 1: Width of hitbox from center (both sides) Word 2: Height of hitbox from center (top & bottom) So reading this with my YI script, I can print hitboxes easily:

Games are basically math with a visual representation of this math, that's why I make the scripts, to re-see games as math. My things: YouTube, GitHub, Pastebin, Twitter

Posted: 4/20/2017 1:30 PM

Quote

brunovalads

Editor, Player (182)

Joined: 4/7/2015
Posts: 330
Location: Porto Alegre, RS, Brazil

Also, Amaraticando was working in a full script for DKC2, with hitboxes, make sure to check it to understand how it's reading the game to print correct hitboxes: http://tasvideos.org/userfiles/info/28335593014878764

Games are basically math with a visual representation of this math, that's why I make the scripts, to re-see games as math. My things: YouTube, GitHub, Pastebin, Twitter

Posted: 4/23/2017 4:12 AM

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RainbowSprinklez

He/Him

Joined: 10/2/2015
Posts: 91

Tyvm for your help :)

I didn't kill donkey, I saved it. Current projects: Misc Donkey hacks :) Past projects: Pacifist DKC1 DKC1 Entrance randomizer DKC2 Entrance randomizer DKDC (a troll hack of DKC1) DKC1 Enemy randomizer (among other things)