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[Sigma]

hi,
  Any one have technical idea about a 2d tennis game in flash? i mean the math behind for creating the illusion of z depth or what should i google for?

Thanks in Advance

[Hayden Scott-Baron]

One of the easiest ways is to compute all your tennis gameplay on a flat 2D field, and then convert the positions when you draw it.

Perspective is just a trapezium, so you need something like this:

fakePositionX = realPositionX * ((realPositionY * 0.2) + 0.;  // indent the X position more towards the top.
fakePositionY = realPositionY * 0.75; // squish the Y position.

With the ball, be sure to draw the shadow in the precise position, and the ball should be above that.

[st33d]

^ what he said kind of:

Think back to your perspective drawing class (everyone's usually had one) and consider 1 point perspective.

If you place the vanishing point in the center of the screen and drew lines in, you would notice that the distortion of x on to the y axis and vice versa can be calculated as a gradient. If you can calculate the slope that defines the vanishing point, you've got yourself a nice lazy way of calculating the scale of objects on the z axis.

There's probably a smart way of doing it, but that's what I would start with, seeing as it sounds like you don't need full 3D.

And what happened to the generative project you were doing?  

[Sigma]

And what happened to the generative project you were doing?  

sorry i dont understand what u mean?

[st33d]

whoops - got you confused with nikki