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Clock Hands Behavior

Added on 6/7/1999

Compatibilities:
behavior D6_5 Mac

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Clock Hands Behavior This behavior moves Flash sprite members as the hour, minute and second hands of a radial-style clock Requires that the sprites be imported Flash members uses "the long time" which returns current time in format "(h)h:mm:ss am" or "(h)h:mm:ss pm"

property pHand     -- which clock hand

on getPropertyDescriptionList
  set handList = [#Hour, #Minute, #Second]
  set p_list = [¬
  #pHand: [ #comment:  "Which Hand?", ¬
  #format:   #symbol, ¬
  #default:  #Second,¬
  #range:    handList ]]
  return p_list
end

on prepareFrame me
  set timeNow = the long time -- time in string format
  set timeChars = the number of chars in timeNow
  set secNow= value(char timeChars-4 to timeChars-3 of timeNow)
  set minNow= value(char timeChars-7 to timeChars-6 of timeNow)

  -- hour might be 1 digit or 2, so I delete
  -- the last 9 chars of timeNow
  -- which leaves either 1 or 2 digits,
  -- which represent the hour

  delete char timeChars-8 to timeChars of timeNow
  set hourNow= value(timeNow)

  -- hour could be in 24 hour format,
  --which can"t be shown on radial clock

  if hourNow > 12 then set hourNow = hourNow - 12

  -- check to see which hand this sprite is,
  -- then update its postion

  case pHand of
    #Second: updateSecond me, secNow
    #Minute: updateMinute me, minNow, secNow
    #Hour: updateHour me, hourNow, minNow
  end case
end

on updateSecond me, secNow
  set the rotation of sprite the spriteNum ¬
  of me = secNow * 6
  updateStage
end

on updateMinute me, minNow, secNow
  -- secAdd allows the minute hand to move smoothly
  -- in correspondence to elapsed seconds
  set secAdd = secNow/10.00
  set the rotation of sprite the spriteNum of me = ¬
  (minNow * 6) + secAdd
  updateStage
end

on updateHour me, hourNow, minNow
  -- minAdd allows the hour hand to move smoothly
  -- in correspondence to elapsed minutes
  set minAdd = minNow/2
  set the rotation of sprite the spriteNum of me = ¬
  (hourNow * 30) + minAdd
  updateStage
end

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