Fake-3D Motion

 

Compatibilities:

Rating:

Drop this behavior onto a bitmap sprite (or Flash, vector, etc.) for PITCH, YAW, and ROLL motion simulation effects. Motion is based on cursor position relative to a center point, constrained by a rect you define.

-- Fake-3d Motion Behavior -- v1.0 6999 -- ©1999 Robert K Wingate -- This is a fun behavior I did for a recent | -- online game, in lieu of a Shockwave7-safe | -- real-time 3d rendering Xtra. Drop it onto | -- a bitmap or vector shape, etc. castMember | -- and see what happens. It"s short & sweet. | -- Not true 3d, but it did the job I wanted. | --                                           | -- This code is emailware:  email me if you  | -- use it. What could be cheaper?            | -- Send comments to:  rwingate@mindmagic.com | --                                           |_____ -- Check out the online game at:                   | -- http://www.mindmagic.com/TFN/warp/warpchase.htm | ---------------------------------------------------- property fMoving    -- turns the effect on and off property fRoll      -- dive / climb effect toggle property fPitch     -- pan left / right effect toggle property fYaw       -- roll / rotation effect toggle property rMouseRect -- rect within which mouse movement affects motion property pCenter    -- point around which to roll, pitch, and yaw property spriteNum ----------------------- on prepareFrame me   -- Here"s where the work gets done, when the effect is on.   -- Motion & rotation are based on current mouse position   -- relative to the center point (as defined by you).   -- You can tweak individual motion speeds by adjusting   -- the floats      if fMoving then     if fPitch then       newV = sprite(spriteNum).locV + (( pCenter[2]-mouseV() ) *.01 )       if newV < rMouseRect.top    then newV = rMouseRect.top       if newV > rMouseRect.bottom then newV = rMouseRect.bottom       sprite(spriteNum).locV = newV     end if          if fYaw then       newH = sprite(spriteNum).locH + (( pCenter[1]-mouseH() ) * .01 )       if newH < rMouseRect.left  then newH = rMouseRect.left       if newH > rMouseRect.right then newH = rMouseRect.right       sprite(spriteNum).locH = newH     end if          if fRoll then       newR = sprite(spriteNum).rotation + (( pCenter[1]-mouseH() ) * .001 )       sprite(spriteNum).rotation = newR     end if   end if end ----------------------- on mToggle me   -- useful for turning the effect on and off; just call   -- this method from a keyDown script or wherever   fMoving = not fMoving end ----------------------- on getPropertyDescriptionList   r = the stage.rect   pDef = point ( r.width / 2, r.height / 2 )   rDef = rect  ( 0,0, r.right - r.left, r.bottom - r.top )      ls = [:]   addProp ls, #fPitch, [ #comment:"Pitch (X axis)?",¬               #format:#boolean, #default:TRUE ]   addProp ls, #fYaw, [ #comment:"Yaw (Y axis)?",¬               #format:#boolean, #default:TRUE ]   addProp ls, #fRoll, [ #comment:"Roll (Z axis)?",¬               #format:#boolean, #default:TRUE ]   addProp ls, #fMoving, [ #comment:"Start moving on beginSprite?",¬               #format:#boolean, #default:TRUE ]   addProp ls, #pCenter, [ #comment:"Center point around which to move",¬               #format:#point, #default:pDef ]   addProp ls, #rMouseRect, [ #comment:"Mouse movement hot rect",¬               #format:#rect, #default:rDef ]   return ls end ----------------------- on getBehaviorDescription me   txt = "Drop this behavior onto a bitmap sprite (or Flash,"   txt = txt && "vector, etc.) for PITCH, YAW, and ROLL motion"   txt = txt && "simulation effects." & RETURN&RETURN & "Motion"   txt = txt && "is based on cursor position relative to a center"   txt = txt && "point, constrained by a rect you define."   return txt end