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My Raycast won't rotate.
http://45.55.195.193/viewtopic.php?f=73&t=24566		 Page 1 of 1
Author:  Coops [ Wed Jul 13, 2011 8:01 pm ]
Post subject:  My Raycast won't rotate.
So I've been playing around with this thing for 2 nights now and I can't figure out whats keeping it from what it needs to do.

From what I can tell with certain debugging tools is that the Ray Cast doesn't go anywhere but to the right (Default, I think) when it should be following a certain target. The first self.guidePixel goes in the right direction but the second self.guidepixel2 doesn't.

Anyhow, here's the script, It's all in the function update and it's a homing device that checks if any obstacles are in the way, if there is then a new path is given, but I haven't gotten that far yet. If I did anything wrong, this would be the first time of it acting up.

Code:
   if self.LifeTimer:IsPastSimMS(250) then
      for actor in MovableMan.Actors do
         local dist = SceneMan:ShortestDistance(self.Pos,actor.Pos,true).Magnitude
         if dist < 1250 and actor.Team ~= self.Team then
            self.target = actor
            break
         else
            self.RotAngle = SceneMan:ShortestDistance(self.Pos,(self.parentActor.Pos + Vector((SceneMan.SceneWidth/2),SceneMan.SceneHeight)),true).AbsRadAngle
         end
      end
   end
   if MovableMan:IsActor(self.target) then
      self.target:FlashWhite(100) -- Debuging
      local pointHit = Vector()
      local pointMiss = Vector()
      local angleAim = SceneMan:ShortestDistance(self.Pos, self.target.Pos, true).AbsRadAngle
      self.guidePixel = CreateMOPixel("SAW.rte/Small Effect") -- Debuging
      self.guidePixel.Pos = self.Pos + Vector(40,0):RadRotate(angleAim) -- Debuging
      MovableMan:AddParticle(self.guidePixel) -- Debuging
      local pathCheck = Vector():RadRotate(angleAim)
      local hitCheck = SceneMan:CastObstacleRay(self.Pos, pathCheck, pointHit, pointMiss, self.ID, -1, 0)
      print(pointHit) -- Debuging
      if hitCheck == 0 or SceneMan:ShortestDistance(pointHit, self.target.Pos, true).Magnitude > 3 then
         self.guidePixel2 = CreateMOPixel("SAW.rte/Small Effect") -- Debuging
         self.guidePixel2.Pos = pointMiss + Vector(0,-45) -- Debuging
         MovableMan:AddParticle(self.guidePixel2) -- Debuging
         print("Found Obstacle!") -- Debuging
      end
   end


Thanks.
Author:  TheLastBanana [ Wed Jul 13, 2011 8:41 pm ]
Post subject:  Re: My Raycast won't rotate.
The reason is that, by default, Vector() creates a vector of (0,0). (0,0) rotated by any amount is still (0,0). Why not just use SceneMan:ShortestDistance as your vector to trace along?
Author:  Coops [ Wed Jul 13, 2011 8:50 pm ]
Post subject:  Re: My Raycast won't rotate.
That doesn't make sense though, Ive used a default Vector of (0,0) before and it worked fine.

Not only that but I am using ShortestDistance as the vector to trace along.
Author:  TheLastBanana [ Wed Jul 13, 2011 10:03 pm ]
Post subject:  Re: My Raycast won't rotate.
No, you're over-complicating things. You're getting SceneMan:ShortestDistance (a vector), turning that into an angle, creating another vector, rotating that vector according to the angle you got from SceneMan:ShortestDistance, then using that. It's way easier to just straight-up use SceneMan:ShortestDistance:
Code:
   if self.LifeTimer:IsPastSimMS(250) then
      for actor in MovableMan.Actors do
         local dist = SceneMan:ShortestDistance(self.Pos,actor.Pos,true).Magnitude
         if dist < 1250 and actor.Team ~= self.Team then
            self.target = actor
            break
         else
            self.RotAngle = SceneMan:ShortestDistance(self.Pos,(self.parentActor.Pos + Vector((SceneMan.SceneWidth/2),SceneMan.SceneHeight)),true).AbsRadAngle
         end
      end
   end
   if MovableMan:IsActor(self.target) then
      self.target:FlashWhite(100) -- Debuging
      local pointHit = Vector()
      local pointMiss = Vector()
      local shortestDist = SceneMan:ShortestDistance(self.Pos, self.target.Pos, true)
      local hitCheck = SceneMan:CastObstacleRay(self.Pos, shortestDist, pointHit, pointMiss, self.ID, -1, 0)
      print(pointHit) -- Debuging
      if hitCheck == 0 or SceneMan:ShortestDistance(pointHit, self.target.Pos, true).Magnitude > 3 then
         self.guidePixel2 = CreateMOPixel("SAW.rte/Small Effect") -- Debuging
         self.guidePixel2.Pos = pointMiss + Vector(0,-45) -- Debuging
         MovableMan:AddParticle(self.guidePixel2) -- Debuging
         print("Found Obstacle!") -- Debuging
      end
   end
Author:  zoidberg [ Wed Jul 13, 2011 10:03 pm ]
Post subject:  Re: My Raycast won't rotate.
Quote:
That doesn't make sense though, Ive used a default Vector of (0,0) before and it worked fine.

i don't believe you, it's a bit impossible.

i'm sure that i used Vector(1, 0) for rotating and magnituding, and it worked fine.
Author:  Coops [ Thu Jul 14, 2011 12:43 am ]
Post subject:  Re: My Raycast won't rotate.
Works like a charm now, thanks TLB.
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