[Best method for smooth rotation over time to a specific angle]

Math:CurveAngle seems to do the same thing as the Math:Inc method I'm currently using, but with a difference scale on the step value. I was hoping there might be a cleaner approach than the one I'm using already.

 

Thanks

[Best method for smooth rotation over time to a specific angle]

Can anyone recommend the best method to rotate an entity in global space, over time, to a specific angle (90 degree increments)?

 

I wrote a bit that does this, but it feels like bloated attempt and has some issues when it comes to detecting when the rotation has arrived at it's destination due to float value variations.

 

In the example below, a button click sets the rotation in motion with (self.rotateX = true), and increments the first step in the rotation with (self.rotateSpeed). In the update function, the current global x rotation is compared to the target (self.rotAngle.x) rotation, and the rotation should continue until the global and target rotations match. At this point, the rotateX flag is disabled (self.rotateX = false).

 

function Script:UpdateWorld()
   -- Attempting to detect when the target rotation has been reached
   if Math:Round(self.selected:GetRotation(true).x) ~= self.rotAngle.x and self.rotateX == true then
    self.newRot = self.selected:GetRotation(true)
    self.newRot.x = Math:Inc(self.rotAngle.x, self.selected:GetRotation(true).x, self.rotateSpeed)
    self.selected:SetRotation(self.newRot, true)
    if Math:Round(self.selected:GetRotation(true).x) == self.rotAngle.x and self.rotateX == true then
	    self.rotateX = false
	    System:Print("X rotation complete")
    end
   end
end

function Script:ButtonClick(mPos)
   if self:IsInRect(mPos, self.upRect) == true then
    self.rotateX = true
    self.rotAngle = self.selected:GetRotation(true) + Vec3(90,0,0)
    self.newRot.x = Math:Inc(self.rotAngle.x, self.selected:GetRotation(true).x, self.rotateSpeed)
    self.selected:SetRotation(self.newRot, true)
   end
end

[Exposed script entity is linked but reads as nil]

Thanks, I'll opt out of the beta for now and see if the problem persists.

[Exposed script entity is linked but reads as nil]

Yes beta, I should have mentioned that.

[Exposed script entity is linked but reads as nil]

I have a Lua script that has the following exposed property.

 

Script.pawns = nil --entity "Pawns"

 

The Pawns entity is a pivot used as a parent to several other entities. Inside the script, I use this reference to iterate through the children.

 

childCount = self.pawns:CountChildren()

 

for i=0, i<childCount-1, 1 do

--Some action

end

 

This normally works great, but I've had three occurances of this reference suddenly reading as nil when no change occurred in the script, and the UI for the exposed property still shows the Pawns entity being linked.

 

Once this nil error occurs, nothing short of deleting the Pawns pivot, creating a new pivot and re-parenting all my child entities, and re-linking the Pawns property corrects the problem. I have tried un-linking and re-linking the reference, removing and re-adding the script, nothing else seems to work, and I've made no change to warrent reference failure.

[Editor object General tab improvements]

When editing an objects position, rotation, or scale from the General tab of the editor, it would really be nice to be able to copy and paste vectors instead of each axis individually.

[Lua - Math:Abs()]

FYI,

 

Math:Abs() is not listed in the command reference. It's available, and works as expected, just not documented.

 

http://www.leadwerks.com/werkspace/page/documentation/_/command-reference/math/

[Documentation]

It would certainly make it easier than my current header file strategy of "I wonder what this does".

[alpha on the roofs of houses]

I'm assuming you mean top-down camera instead of 3rd person since you want the roof to disappear when the player walks in. If that's the case, here's the general approach.

 

Start by performing a raycast (Pick) from your camera to the player and enable the [closest] parameter.

http://www.leadwerks.com/werkspace/page/documentation/_/command-reference/camera/camerapick-r199

 

If the returned pickInfo.entity is not your player, then you can assume some kind of overhang (roof) is covering the player. Swap the material on the overhang.

http://www.leadwerks.com/werkspace/page/documentation/_/command-reference/material/materialsetshader-r247

[Wireframe view for tessellation shader]

Good for debugging. +1

[FFT window on OpenAL buffer (for spectrum data)]

Thanks Josh, I'm working with the data now.

 

To anyone interested, I found a really great article on processing audio with an FFT window. I think this might work, though I may have to read the article 3-4 more times.

 

Part I

http://www.edn.com/electronics-news/4383713/Windowing-Functions-Improve-FFT-Results-Part-I

 

Part II

http://www.edn.com/electronics-news/4386852/Windowing-Functions-Improve-FFT-Results-Part-II

 

If I can build a getspectrum function, then we can try convince Josh to include it in the API. Having this ability brings a lot of cool possibilities, lip sync, music-based games, etc.

[How do you make a swinging door swing like a door?]

I know, old post, but I wrote this LUA swinging door script as an alternative to the built in script, and maybe someone else might find it useful.

 

This script does not use a hinge joint, it assumes it's attached to a 3D model door with it's pivot point on the side where a normal hinge would go. Set a [1] on the rotation axis you wish to rotate, adjust the movement speed, the open/close angles, and link to optional open/close sounds. It also assumes your operating the door from the FPSPlayer script.

 

Script.rotationAxis = Vec3(0,1,0) --Vec3 "Rotation Axis"
Script.movementSpeed = 3 --float "Movement Speed"
Script.closeAngle = 0 --int "Close Angle"
Script.openAngle = 135 --int "Open Angle"
Script.closeSound = "" --path "Close Sound"
Script.openSound = "" --path "Open Sound"

rotation = Vec3(0,0,0)
moveDoor = false
openDoor = false
openSnd = nil
closeSnd = nil

function Script:Start()
   if self.openSound ~= "" then
       openSnd = Sound:Load(self.openSound)
   end

   if self.closeSound ~= "" then
       closeSnd = Sound:Load(self.closeSound)
   end
end

--FPSPlayer Use method
function Script:Use()
   if openDoor == true then
       if closeSnd ~= nil then
           closeSnd:Play()
       end
       openDoor = false
   else
       if openSnd ~= nil then
           openSnd:Play()
       end
       openDoor = true
   end
   moveDoor = true
end

function Script:UpdateWorld()
   -- Stop movement if the open/close angles have been reached
   if self.rotationAxis.x == 1 then -- X rotation axis set
       if openDoor == true and self.entity:GetRotation().x >= self.openAngle then
           moveDoor = false
       end
       if openDoor == false and self.entity:GetRotation().x <= self.closeAngle then
           moveDoor = false
       end
   end

   if self.rotationAxis.y == 1 then -- Y rotation axis set
       if openDoor == true and self.entity:GetRotation().y >= self.openAngle then
           moveDoor = false
       end
       if openDoor == false and self.entity:GetRotation().y <= self.closeAngle then
           moveDoor = false
       end
   end

   if self.rotationAxis.z == 1 then -- Z rotation axis set
       if openDoor == true and self.entity:GetRotation().z >= self.openAngle then
           moveDoor = false
       end
       if openDoor == false and self.entity:GetRotation().z <= self.closeAngle then
           moveDoor = false
       end
   end

   -- Move the door towards it's selected position
   if moveDoor == true then
       if openDoor == true then -- Close door    
           if self.rotationAxis.x == 1 then
               rotation.x = rotation.x + (Time:GetSpeed() * self.movementSpeed)
           end
           if self.rotationAxis.y == 1 then
               rotation.y = rotation.y + (Time:GetSpeed() * self.movementSpeed)
           end
           if self.rotationAxis.z == 1 then
               rotation.z = rotation.z + (Time:GetSpeed() * self.movementSpeed)
           end            
       else -- Open door
           if self.rotationAxis.x == 1 then
               rotation.x = rotation.x - (Time:GetSpeed() * self.movementSpeed)
           end
           if self.rotationAxis.y == 1 then
               rotation.y = rotation.y - (Time:GetSpeed() * self.movementSpeed)
           end
           if self.rotationAxis.z == 1 then
               rotation.z = rotation.z - (Time:GetSpeed() * self.movementSpeed)
           end
       end    
       self.entity:SetRotation(rotation)
   end
end

[table/array editor parameters]

I know, old post, but I want this also.

[FFT window on OpenAL buffer (for spectrum data)]

So the bank->buf contains four bytes of data in a char array format, and I can convert this back to an int, but how do I read the next four bytes?

[FFT window on OpenAL buffer (for spectrum data)]

Yes, I've played with the workshop, it's great, but I was also under the impression there is no option there for monetization.

[FFT window on OpenAL buffer (for spectrum data)]

I'm trying to tap the OpenAL raw audio data to see if it can be processed with an FFT window to build a live stream of the spectrum or amplitude of a playing audio file. This is quite simple in FMOD since it ships with a getSpectrum function. However, we are evaluating the feasibility of bringing our automated lip sync solution, originally built for Unity on top of FMOD, to Leadwerks, and after speaking with Josh, including FMOD as a built in option for Leadwerks users isn't an option at this time. Personally, we would love to see an asset store for Leadwerks as we think Unity has proven it's a good source of income for the host company, encourages developer involvement, and makes it easier for new developers. It is popular enough to convince Unreal Engine to get on board and open their own asset store.

 

Josh informed me that the Bank class pointer references the raw data but I'm struggling to determine if the data in the bank->buf could be processed through an FFT window.

 

Are there any OpenAL pro's here that know if this can be done, and might be will to share some expertise?

 

In case anyone is interested or curious, here are some of our promotional videos for our solution on Unity.

 

Thanks

[OpenGL 4 compatible graphics card - really needed]

Mmmmm couch programming.

[OpenGL 4 compatible graphics card - really needed]

Same here, I'm still getting the "Failed to initialize graphics" message as the UI loads.

[OpenGL 4 compatible graphics card - really needed]

Maybe a Steam code-based private beta if you don't want it to roll out to all beta users? This NUC is dedicated to the cause and only used as a test machine so it's a good candidate.

[OpenGL 4 compatible graphics card - really needed]

Any chance you can post that to the steam beta branch? I have an Intel Haswell NUC with HD 5000 graphics running Ubuntu 14.04 LTS, with OpenGL 3.0 Mesa 10.2.2. I'd love to test the Linux build on it.

[Why doesn't pickinfo.normal return -1, 0, or 1 only?]

Thanks for everyones assistance, Macklebee discovered my error, I had SetPickMode to Sphere where it should have been using Polygon. Macklebee, much appreciated. There is no issue with the Blender cube or Blender exporter for this purpose.

[Why doesn't pickinfo.normal return -1, 0, or 1 only?]

Thanks for posting that example test cubes. What I've discovered is that the bad normal values are only being returned on prefabs that are instantiated into the scene at runtime. If I place the block in the scene at design time, the normals are correct. I am setting the rotation to (0,0,0) on instantiation, but still getting the bad values. After trying your cubes, I tried my Blender cubes again and found the same thing, the Blender cube works fine when placed in the scene at design time, but not at runtime.

[Why doesn't pickinfo.normal return -1, 0, or 1 only?]

Yes, I deleted the import file and the resultant mdl and meta files before importing the new file.

[Why doesn't pickinfo.normal return -1, 0, or 1 only?]

Same issue with a Blender FBX 6.1 ASCII export. Leadwerks doesn't seem to like the Blender FBX 7.5 binary export.

[Why doesn't pickinfo.normal return -1, 0, or 1 only?]

The cube is using the default flat shading in Blender. I'm using Blender 2.71 and the latest official Leadwerks exporter from github.