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MFGG Message Boards: Archives -> MFGG -> Fangame Discussion -> Miscellaneous Discussion

Created objects in MMF2 randomly "sync" unwantedly, Sorry to ask another question

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Someguy

Posted: May 25 2008, 05:07 PM

and oh my god it’s YOURS
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I hope that it was okay to make another help topic, I don't want to be begging people for answers... it's just, I have an object with a hand made simple gravity thing applied to it, and have it set so when it's not overlapping an object that represents a small bit of ground for it to be in walk mode, it switches a flag on to go into jump mode, and when it touches that again, it goes back into walk mode. Works fine, for the most part...

But when I have the engine generate a bunch of these objects from the same source, one per frame(or even less), with different speeds and whatnot, they like to end up syncing up, and thus having a ton of these objects walking off a cliff until the last one of a group walks off and they all act like they've stopped overlapping.

Because what code I have is small, I'll type it out, in case anyone can recognize an issue. Note that the object's name has been changed to CHAR to hide what it's for, don't want to reveal what it's for yet. Also note that the CHAR object uses a ball movement for horizontal movement, just to make it a bit easier and have less code.

QUOTE

NOTE: CHAR is the object. Flag 0 if on is the gravity flag. Alterable Value B is the current Y velocity, A is used to lower the speed it goes up/down.
1 - Start of Frame: Set object CHAR speed to Random(10)+3
[Makes the CHAR objects already placed start walking at random speeds, to help separate them]
2 - Always + Character internal flag 0 is on: Add 1 to CHAR Alterable Value A, Set CHAR Y position to Character Y + CHAR Alterable Value B
[When gravity is on, add 1 to alterable value A, and set Y position to Y + alterable value B to move according to gravity]
3 - Alterable Value A of CHAR = 4, CHAR internal flag 0 is on: Set CHAR Alterable Value A to 0, Add 1 to CHAR Alterable Value B
[When Alterable Value A reaches 4 and gravity is on, add 1 to the gravity and reset A, so it's slower]
4 - Alterable Value B of CHAR <= 0, CHAR internal flag 0 is on: Change animation sequence to Jumping
5 - Alterable Value B of CHAR > 0, CHAR internal flag 0 is on: Change animation sequence to Falling
[For animations]
6 - CHAR is NOT overlapping GROUND OBJECT, CHAR internal flag 0 is off: Set Alterable Value B of CHAR to -3, Set internal flag 0 of char on
[When it's not on the ground, turn gravity on, start off with a jump as it just walked off a cliff]
7 - CHAR is overlapping GROUND OBJECT: Set internal flag 0 of CHAR off
[When it overlaps ground, make it stop falling]
8 - Alterable Value B of CHAR > 8: Set Alterable Value B of CHAR to 8
[Keeps it from falling too fast]
9 - CHAR is overlapping GROUND OBJECT, CHAR's ball movement isn't stopped: Change animation sequence to Walking
[If it's moving on the ground, make it walk]
10 - CHAR is overlapping TURN RIGHT OBJECT: Set CHAR direction to right
11 - CHAR is overlapping TURN LEFT OBJECT: Set CHAR direction to left
[Just for changing directions]
12 - Y position of CHAR >= 200: Set alterable value B of CHAR to Random(10)*-1
[For now, if it ends up falling off of the level, make it bounce back up, randomly(to help differentiate mass amounts)
13 - CHAR internal flag 0 is off, CHAR is overlapping a backdrop: Set CHAR Y position to CHAR Y position - 1
[If it's overlapping ground, push it up out of it]
14 - Repeat while Space Bar is pressed: Create CHAR at (1,43) on Layer 1
[Hold space bar to generate mass amounts, as it's for something requiring a ton of these simple objects to move independently]

I want to show a screenshot of the area I'm testing this in... but I have a feeling it'd pretty much reveal what it is.

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Drezus	Posted: May 25 2008, 08:57 PM
ASH STARES INTO YOUR CHEEKS Group: Members Posts: 2236 Member No.: 2670 Joined: 15-September 06 Status: (0d)	I think that every object should have it's own source for the codes, just like if it was behaviors, instead of telling them all to take information from a single source. At least I always did that way and my game always ended going wrong somehow. So I started using behaviors. This post has been edited by Drezus on May 25 2008, 09:02 PM -------------------- --------------------

Xgoff

Posted: May 27 2008, 12:14 AM

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so i made this according to your events and all the objects do is bounce constantly (which i assume is not what you want)

you're probably just running into object selection issues and those are usually a ***** to debug ~~period~~ without having the problematic app

This post has been edited by Xgoff on May 27 2008, 12:14 AM

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QUOTE

(5:25:58 PM) Mikau: xgoff
(5:26:00 PM) Mikau: guess what
(5:26:04 PM) Xgoff: chicken butt
(5:26:09 PM) Mikau: **** you

Retriever II	Posted: May 27 2008, 12:35 AM
Catalyst Group: Members Posts: 18290 Member No.: 52 Joined: 13-October 03 Status: (0d)	MMF has fuzzy selection logic. I only glanced through your code but I think this applies: Objects are NOT self-referential when you expect them to be. This means that for any event which has the chance of selecting more than one instance of an object, you will not get expected results when you use the object's own alterable values in the action expression. MMF will pick ONE of the selected instacnes (typically/always the last one created) and use those values for the rest of the selected instances. The result is things sync up and you go crazy. If you haven't learned already, then you need to learn how to spread values, so that you can loop through and uniquely identify and operate on each individual selected instance. --------------------

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