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Ripple Rain-Alphamania

Added on 6/10/1999

Compatibilities:
D6_5 Mac Script
Required Xtras:
Alphamania
Effector Set II for Alphamania

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Author: MediaLab (website)

Requires Effector Set 2

property sNum
property speed -- how often do they fall?
property spriteHeight, spriteWidth -- dimensions of sprite
property lastRainTick -- last time a drop fell
property onlyWhileMouseOver -- only generate ripples while over, pauseEffect otherwise
property paused -- generate ripples or not

on getBehaviorDescription me
  return "This behavior will place random ripples on the sprite to generate a rain effect."
end

on getPropertyDescriptionList me
  set list = [:]
  addProp list, #speed, [#comment: "Speed:", #format: #integer, #default: 60, #range: [#max: 100, #min:1]]
  addProp list, #onlyWhileMouseOver , [#comment: "Only While Mouse Over", #format: #boolean, #default: FALSE]
  return list
end

on beginSprite me
  set sNum = the spriteNum of me
  set spriteWidth = the width of sprite sNum
  set spriteHeight = the height of sprite sNum
  set lastRainTick = 0
  ripple(sprite sNum)
  if onlyWhileMouseOver then
    if not rollover(sNum) then
      PauseEffect(sprite sNum, #ripple)
      exit
    end if
  end if
  Add(the actorList, me)
end

on endSprite me
  set pos =   getone(the actorList, me)
  if pos then
    deleteAt(the actorList, pos)
  end if
end

on stepFrame me
  set nextRainTick = lastRainTick + 101 - speed
  if the ticks >= nextRainTick then  -- time for another drop
    RainDrop(me)
    set lastRainTick = the ticks
  end if
end

on RainDrop me, h, v
  if integerP(h) then
    set x = h
  else
    set x = random(spriteWidth)
  end if
  if integerP(v) then
    set y = v
  else
    set y = random(spriteHeight)
  end if

  ripple(sprite sNum, [#xLocation: x, #yLocation: y])
end

on StopEffect me, sym
  -- removes this behavior from the actorList
  if not voidP(sym) then
    if sym <> #ripple then exit
  end if
  set pos =   getone(the actorList, me)
  if pos then
    deleteAt(the actorList, pos)
    PauseEffect(sprite sNum, #ripple)
  end if
end

on ResumeEffect me, sym
  -- adds this behavior to the actorList
  if not voidP(sym) then
    if sym <> #ripple then exit
  end if
  set pos =   getone(the actorList, me)
  if pos = 0 then
    Add(the actorList, me)
    ContinueEffect(sprite sNum, #ripple)
  end if
end

on mouseEnter me
  if onlyWhileMouseOver then
    ResumeEffect(me)
  end if
end

on mouseLeave me
  if onlyWhileMouseOver then
    StopEffect(me)
  end if
end

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