Spaceship Move by keypress

 

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Move A sprite on KeyPressed

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--Move A sprite on KeyPressed --by Kurt Koenig * Belgium          7/2000 -------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------- property ThisOne, Booster,Angle,TheLoch,TheLocv,pRight, pOrig,¬         pBottom, Boostermember, ForwKey, RevKey, TurnLeft, Turnright on getPropertyDescriptionlist   desclist = [:]      addprop desclist, #ForwKey, [#comment : "which key to move the ship forwards" ,¬ #format : #string , default : ""]   addprop desclist, #RevKey, [#comment : "which key to move the ship backwards" ,¬ #format : #string , default : ""]   addprop desclist, #TurnRight, [#comment : "which key to turn to the rightside" ,¬ #format : #string , default : ""]   addprop desclist, #TurnLeft, [#comment : "which key to turn to the leftside" , ¬ #format : #string , default : ""]   addprop desclist, #Boostermember, [#comment : "Enter a member for accelerating ship", ¬ #format : #member, #default : ""]      return desclist    end on getbehaviordescription   return ¬ "You can use this behavior on a sprite (for  example:"&RETURN&"¬ spaceship,Car,Airplane,and assign four keys to "&RETURN&"¬ steer it.(backwards,forwards, turnleft,turnright)"    end getbehaviordescription on getbehaviortooltip   return¬ "Use this behavior on a sprite, which one then"&RETURN&"¬ will be moveable with the keys you define"    end getbehaviortooltip on beginsprite me   pOrig = the member of sprite the currentspritenum   pStage = the rect of the stage   pRight = pStage[3] - pStage[1]   pBottom = pStage[4] - pStage [2]   ThisOne = me . spriteNum   Booster = float(0)   TheLoch = sprite(ThisOne).loch   TheLocv = sprite(ThisOne).locv   Angle = 0    end on MyPos me   myqd = sprite(ThisOne).quad   myLeft = min(myqd[1][1],myqd[2][1],myqd[3][1],myqd[4][1])   myRight = max(myqd[1][1],myqd[2][1],myqd[3][1],myqd[4][1])   myTop = min(myqd[1][2],myqd[2][2],myqd[3][2],myqd[4][2])   myBtm = max(myqd[1][2],myqd[2][2],myqd[3][2],myqd[4][2])   case 1 of     (myRight < 0) : TheLoch = pRight     (myLeft > pRight) : TheLoch = 0     (myBtm < 0) : sprite(ThisOne).TheLocv = pBottom     (myTop > pBottom) : TheLocv = 0   end case    end on exitFrame me   (sprite ThisOne). member = porig   if keypressed(RevKey) then     if Booster > -3 then       Booster = Booster - 0.3     end if   end if   if keypressed(ForwKey) then     sprite (ThisOne) . member =  member Boostermember     if Booster < 3 then       Booster = Booster + 1     end if   end if   Booster = Booster * 0.9   if keypressed (TurnLeft) then     Angle = Angle -3   end if   if keypressed (TurnRight) then     Angle = Angle + 3   end if   pAngle = Angle * pi()/180   TheLoch = TheLoch +(cos(pAngle)*Booster)   TheLocv = TheLocv +(sin(pAngle)*Booster)   Mypos me   sprite(ThisOne).loch = TheLoch   sprite(ThisOne).locv = TheLocv   sprite(ThisOne).rotation = Angle   end