Wave 2d effect : help required

BlitzMax Forums/BlitzMax Beginners Area/Wave 2d effect : help required

DannyD

(Posted 2009) [#1]

Hi,
Have a look at this flash intro http://www.delamelon.com/flash/body%20blows.swf

I'm trying to get an effect like the purple 'wave' at the bottom of the screen but can't think of how to do it. Any ideas? Do I create a line an move it by the opposite of each line's ends coords? Any tips appreciated.

Thanks.

Perturbatio

(Posted 2009) [#2]

It looks like a large rotating rectangle to me.

ImaginaryHuman

(Posted 2009) [#3]

Yeah just set the handle position offset to the top middle of the rectangle and rotate it back and forth

Bremer

(Posted 2009) [#4]

Graphics 640,480

SetColor(180,160,160)
DrawRect(0,0,640,320)

Local img:TImage = CreateImage(640,320)
GrabImage(img,0,0)
SetImageHandle(img,320,0)

Local angle:Int

SetClsColor(48,96,64)

While Not KeyHit(KEY_ESCAPE)
	Cls
	SetScale(2.0,1.0)
	SetRotation(Sin(angle)*15)
	DrawImage(img,320,240)
	Flip
	angle :+ 1
Wend
End

DannyD

(Posted 2009) [#5]

Thanks everyone especially zawran for the code. Now it's time to sit down and understand whats happening and be able to replicate it myself.

Many thanks.