Kirby Inhailing Enemies?

[darkmanx_429]

I wanted to have a special attack for my player that pulls enemies towards the player. (Similar to how Kirby Inhales things from those games) How would I begin to code something like that for MMF2? Would I have to use box2d or can I straight use some variables in my code? Please be specific for me so that I may learn! Can someone with some knowledge help me?

The effect would be similar to something shown here:

http://www.youtube.com/watch?v=tYfO0iS5zaE

[happygreenfrog]

I wanted to have a special attack for my player that pulls enemies towards the player. (Similar to how Kirby Inhales things from those games) How would I begin to code something like that for MMF2? Would I have to use box2d or can I straight use some variables in my code? Please be specific for me so that I may learn! Can someone with some knowledge help me?

The effect would be similar to something shown here:

http://www.youtube.com/watch?v=tYfO0iS5zaE

That should be easy, though I haven't played the Kirby games, so I'll need you to answer a few questions:

When the ability is used, do you just want the enemies to be moved horizontally (left and right) or do you want the enemies to be pulled towards the player vertically (up and down) as well?

Should the enemies be affected by gravity while the ability is used?

The video is kinda a little too vague to answer those questions, since the object is never inhaled in mid-air.

[darkmanx_429]

That should be easy, though I haven't played the Kirby games, so I'll need you to answer a few questions:

When the ability is used, do you just want the enemies to be moved horizontally (left and right) or do you want the enemies to be pulled towards the player vertically (up and down) as well?

Should the enemies be affected by gravity while the ability is used?

The video is kinda a little too vague to answer those questions, since the object is never inhaled in mid-air.

Yeah, up and down and right and left (subtle). As for the gravity the enemy would be light as a feather. Just imagine like a tornado, pulling debris towards it...that kinda of motion.

[happygreenfrog]

Okay. It's getting late for me (it's around 10:30 PM), so I'll make an example tomorrow (you might want to remind me via PM).

[darkmanx_429]

I'm sure a mathematician could explain to you the various forces at work, but no, it isn't especially difficult to recreate something like Kirby in Fusion. Basically you want acceleration toward a center point (Kirby).

If the distance of the enemy is within range of the inhalation, start accelerating the enemy toward the center point.

For instance,

Always
-Set X of Active 2 to Alt. Value X
-Set Alt. Value X to itself plus Alt. Value A

If Active 2 is right of Active 1:
-Subtract 1 from Alt. Value A

If Active 2 is left of Active 1:
-Add 1 from Alt. Value A

(This will accelerate Active 2 indefinitely)

That's basic acceleration toward a point. Minor modifications will give you what you're looking for.

Thanks Snail! I will try this code, and then let you know the results! Keep the ideas coming people!

[Jacob]

Gravity has an inverse square relationship, so if you wanted something like that you could set the velocity to s/r², where s is a constant and r² is the square of the distance between the enemy and kirby. It will pull far objects slowly and near objects exponentially faster.

[Warmachine]

Hey dude, try using scale and rotation. Make it so that when the inhale is happening every x amount of time the scale decreases and + or - the x position to give it the pull effect you need. That should work out fine