9 replies to this topic

[3DModelerMan]

Hey I was wondering what you guys had to say about this.
How did they do the launching in smash bros?. I can't seem to get it to work in my little demo, should I have them launch for only a certain amount of time depending on their damage?, or only a certain distance?.
Thanks:happy: .

[starstutter]

ehhh, well sounds cool but we could probably help more if you posted some code :)

I think it's really just rasing the velocity of the launch linear to the amount of damage they take. You shouldn't have to change other aspects of the physics.

[alphadog]

What is "the launching"? (Sorry, never played Smash Bros.)

To me, it sounds like the next Night Shyamalan movie...

[starstutter]

alphadog said:

What is "the launching"?
To me, it sounds like the next Night Shyamalan movie... :)

Vwat a twist!

[3DModelerMan]

Quote

What is "the launching"? (Sorry, never played Smash Bros.)

The higher your damage the easier it is to launch your oponent out of the screen and K.O them. But anyway I will install a physics engine and get everything setup and working then.

[starstutter]

well, I mean, we really can't specificly help you because you're not telling us exactly how you plan to implement this. Off the top of my head:

LaunchSpeed = PowerOfAttack * Direction + log(DamagePercent + 1) * Direction * (pow(PowerOfAttack, 2)* .07);

I'm just pulling that out of my ass and basing it off what I've seen of the smashbros damage system. Obviously it's not totally accurate but it should give you a vauge resemblance of the launch patterns.

[3DModelerMan]

Thanks, a vauge resemblance is all I really need anyway.

[alphadog]

Well, your own "launching" could be designed from simple kinetics and transfer of a force to a body, where the damage caused is an indicator of the "strength" of the force. Basically, start from an elastic collision and move from there...

[imerso]

Have you already implemented some sort of gravity into your characters?

Gravity is quite simple to implement, you just insert a property for vertical increment, like:

class Sprite

{

  float iy;   // vertical increment

  float px, py;  // sprite position

  ... other properties, etc

}

then, at each step of your character updating, you do something like:

sprite.iy += GRAVITY; // GRAVITY = some small value, like 0.8f

sprite.py += sprite.iy; // here you update sprite vertical position


// check if it reaches ground (simplistic)

if (sprite.py > SCREEN_HEIGHT)

{

  // prevents from falling out of screen

  sprite.py = SCREEN_HEIGHT;


  // you can give the sprite a bounce if you wish:

  sprite.iy *= -0.5f;  // (nice bouncing!)

}

There were some details left for you to implement, but this is a basic gravity algorithm that works nicely.

[3DModelerMan]

Yeah gravity is easy, and my engine just lets me set the gravity on my objects anyway.