macklebee

August 19, 2018

At the moment, I would say collision hulls are broken and probably have a lot to do with with the same thing that is happening here:

A couple of things to note:

- Your model can be picked up by setting the child mesh's mass to 1 but this breaks the physics and the collision hull will not move with it. (also requires the child mesh's gravity to be turned off)

- Make sure you delete or at least don't export your modo directional light and camera when exporting the model (I don't think this is an issue but no reason to have these as children in the model)

At the moment, I think would majority of people could get by with built in physics shapes being created, but if someone just has to have a custom shape before this issue gets fixed then:

- Model custom shape (keeping in mind the origin of the actual model you are wanting to apply it towards).

- Import in LE, view in asset browser, right-click and pick Generate Shape --> Polymesh or Convex Hull

- Save the new PHY file as the same name as actual model that needs a custom physics shape

- Place the actual model into scene and it will have your custom shape applied automatically.

August 19, 2018

with inherent lua:

http://www.lua.org/manual/5.1/manual.html#5.6

math.randomseed(Time:Millisecs()) 
myvariable = math.random(min,max)

with LE functions:

https://www.leadwerks.com/learn?page=API-Reference_Object_Math_Random

Math:SeedRandom(Time:Millisecs())
myvariable = Math:Random(min,max)

In both cases, you need to set the minimum and maximum values (min & max) that the random number should be equal to or fall between.

Just FYI - there is a search available in the upper right-hand corner of the forum that can allow you to search for stuff like this :

August 18, 2018

function Script:PostRender(context)
	context:SetBlendMode(Blend.Alpha)
	context:DrawImage(self.imgHudPlayer,context:GetWidth()-200, context:GetHeight()-200,200,200)
	context:SetBlendMode(Blend.Solid)
end

August 18, 2018

DXT1 compression does not store alpha. DXT3 will show alpha - but its all or nothing. DXT5 will show alpha in a full gradient from 0 to 1. Uncompressed texture will also show the alpha and is best for a GUI image.

Read the documentation on compression as this information is available:

https://www.leadwerks.com/learn?page=Tutorials_Editor_Textures

August 17, 2018

11 minutes ago, Argent Arts said:

Another thing I've noticed - If I bring in a model that ships with Leadwerks, like one of the crate models, I can select it freely in any of the viewports. When I select it, the model turns red to indicate it is selected. My test models cannot be selected in the viewport, but can be selected in the scene tree. However, once selected in the scene tree, they do not turn red in the viewport to indicate they are selected. Even so, the move gizmo handle appears, so I can still move the model and it moves just fine.

So, the model looks correct in all viewports, but I cannot select it and when selected in the scene tree, it does not turn red. I can still manipulate it (move, rotate, and scale) as long as I click+drag the gizmo handles.

Its the same thing already reported in the second bug report posted above. Until Josh re-releases the fix that was done for it in 4.6, this will be an issue.

August 17, 2018

What version of LE are you using? This sounds like previous bug reports that has been resolved if memory serves.

August 17, 2018

The error tells you exactly the problem. You are trying to mathematically add something to a string in lua. In lua, concatenation is two periods not a plus sign. So your code should look like this:

System:Print(nameRequest.." has been found!")

https://www.lua.org/pil/3.4.html

August 17, 2018

context:DrawText(string.format("%02d:%02d",hours,minutes), 40,175)

will give your displayed clock time leading zeroes.

EDIT -- gave a simplified version

August 17, 2018

Two things that I can see: 1) you are using the wrong blendmode and 2) not the textures I mentioned in the link. Also for the 100th time, if you do not post your files for us to try, we can only guess at what else you are doing wrong. Help us to help you.

August 16, 2018

3 hours ago, SpiderPig said:

What Josh says here is that the deferred renderer can't do transparency like that. We can only discard one pixel at a time to get 100% transparency.

hmmm...

but in any case, try this:

and for some reason, Josh has managed to break all the attachments at some point so here is the shader from that post:

diffuse+normal+specular+cubemap.zip

August 14, 2018

1 and 2:

3:

August 12, 2018

Make it a leadwerks system print and you will be able to see the results in the script editor:

System:Print(string.upper(text))

August 12, 2018

Again, I can't speak for what you have because I do not have it. If you are using the standard monster AI script on the crawler, then it should work correctly just like the test that I did above. If you are using your own custom scripts for the AI and whatever you currently have for the minimap, then nobody but you probably has that exact setup. Provide an example project that shows the issue and someone may be willing to help troubleshoot.

August 12, 2018

If the minimap you are referring to was the simple shader and script version I posted and then Aggror added a sphere to it to check for nearby enemies, then the problem could be that the sphere is being set as a child to the player. Twice for some reason? If i had to guess what the problem was without testing it out, i would say its because the sphere is now a child of the player which the enemy AI script assumes the sphere is the player. The sphere is 50 meters in diameter.

function Script:Start()
    self.miniMapSphere = Model:Sphere(8,self.player) -- by putting the player as the second parameter, you just set the sphere as a child to the player
    self.miniMapSphere:SetScale(50,50,50)
    self.miniMapSphere:SetPosition(self.player:GetPosition(true))
    
    --Parenting the sphere to the player, means we dont have to update the position ourselves again.
    self.miniMapSphere:SetParent(self.player) -- this is duplicating setting the parent?
    self.miniMapSphere:Hide()
end

so what you can try is to remove the parenting and then update the position of the sphere in the Script:UpdateWorld() function.

function Script:Start()
    self.miniMapSphere = Model:Sphere(8)
    self.miniMapSphere:SetScale(50,50,50)
    self.miniMapSphere:SetPosition(self.player:GetPosition(true))
    self.miniMapSphere:Hide()
end

function Script:UpdateWorld()
    self.timer = self.timer + Time:GetSpeed()
	self.miniMapSphere:SetPosition(self.player:GetPosition(true)) --add this to update the position of the sphere
    if self.timer > self.timeUntilMinimapUpdates then
        self.timer = 0
        self.enemyEntities = nil
        local AABB = self.miniMapSphere:GetAABB(1)

        --We pass along the entity that our current script is attached to
        world:ForEachEntityInAABBDo(AABB, "Callback", self.entity) 
    end
end

If the above is not the latest and greatest code you are working from, then my apologies. This is just a guess since i don't have an easy way to test it out, but it may be worth a try to see if it resolves your issue.

--EDIT: I just tested my theory above by placing a crawler with the standard monster AI script into a simple terrain scene in the editor. I changed the visual range to 5 meters. i then placed a player prefab in the scene about 30 meters away. Then I created a 50-m diameter CSG sphere with the invisible material. Placed the sphere's center at the location of the player and dragged the sphere in the scene browser to be a child under the player. Started the game and once the player moves a couple of steps toward the crawler, and it immediately starts to chase me. So it looks like my theory may be correct.

August 10, 2018

5 minutes ago, Josh said:

Lua sandboxing disables many libraries so that unsafe code cannot be run. By default it is disabled (and the warning given), and it will only be enabled if a command line parameter is passed to the EXE. This was implemented for Game Launcher, but probably isn't so important now.

Eh actually its probably still important for users to understand that by having the sandbox disabled that it loads specific lua libraries that could be used to run unsafe code. Of course, it should be left up to the programmer to decide their needs, but without that option I do not think most people here would understand what was being enabled in the background. I personally like having the option.

August 10, 2018

well, it does if you just redraw the gui base as shown in my above example... I don't know if that's necessarily a good thing or not or will cause a problem with something else, but it appears to get around the problem at the moment.

also it works just fine when you don't have any gui elements...

August 10, 2018

14 minutes ago, Josh said:

What is a "normal" DrawText command?

The normal would be just 'context:DrawText("text",x,y)'. This version of DrawText() is not affected by the creation of gui element. But if you use 'context:DrawText("text",x,y,w,h,style)' and have created a gui element, it will be hidden - unless of course you redraw the gui base as shown in my example. So for whatever reason, the two versions of DrawText() react differently depending on whether a gui element exists.

August 10, 2018

I could be wrong but I believe the tabber is an illusion of sorts that requires the programmer to create the effect of changing tabs by showing and hiding the other gui elements depending on which tab is selected.

EDITED -- Added panels to allow for grouping of gui elements to make showing and hiding for the different tabs easier.

example:

local window = Window:Create("tabber example",0,0,400,300,Window.Titlebar+Window.Center)
local context = Context:Create(window)
local gui = GUI:Create(context)

tabber = Widget:Tabber(20,20,300,150,gui:GetBase())
tabber:AddItem("Buildings1", true)
tabber:AddItem("Buildings2",false)
tabber:AddItem("Buildings3",false)

panel0 = Widget:Panel(0,0,300,150,tabber)
wbase = Widget:Button("Foundation",10,60,80,30,panel0)

panel1 = Widget:Panel(0,0,300,150,tabber) 
wwall = Widget:Button("Wall",100,60,80,30,panel1)
checkbox = Widget:Button("Checkbox",10,60,76,26,panel1)
checkbox:SetString("style","Checkbox")
panel1:Hide()

panel2 = Widget:Panel(0,0,300,150,tabber)
wroof = Widget:Button("Roof",190,60,80,30,panel2)
panel2:Hide()

while not window:KeyHit(Key.Escape) do
	if window:Closed() then return false end
        
	while EventQueue:Peek() do
		local event = EventQueue:Wait()
		if event.source == tabber then 
			if event.data == 0 then 
				panel0:Show()
				panel1:Hide()
				panel2:Hide()
			elseif event.data == 1 then
				panel0:Hide()
				panel1:Show()
				panel2:Hide()
			else
				panel0:Hide()
				panel1:Hide()
				panel2:Show()
			end
		end
	end
	context:Sync()
end

August 9, 2018

10 hours ago, Josh said:

It looks like maybe some clipping plane stuff is left active after the GUI renders.

So if that was the case, then shouldn't that also prevent just a normal DrawText() from appearing as well? Because it doesn't. Does the new DrawText() have a different drawing order than a normal DrawText()?

August 8, 2018

This above is what was needed to be provided to help troubleshoot. An example that demonstrates the issue. So from the looks of it, anything that uses the undocumented, new DrawText() with the extended parameters for centering within a given rectangle does not play well not just with the gamemenu script but any gui element you create. As a test I created a simple program that created a label and then just performed the new DrawText() version that was not part of the label/gui. The new version of DrawText() if not part of the gui for some reason will be hidden. So what I found is if I just simply redraw the gui's base whether its hidden or not, the new DrawText() will show properly.

Example:

window = Window:Create("Label Example",0,0,800,600,Window.Titlebar + Window.Center)
context = Context:Create(window)
world = World:Create()
camera = Camera:Create()
camera:SetPosition(0,0,-3)
light = DirectionalLight:Create()
light:SetRotation(35,35,0)
box = Model:Box()
box:SetColor(1,0.5,0,1)

gui = GUI:Create(context)
base = gui:GetBase()
base:SetScript("Scripts/GUI/panel.lua")
base:SetObject("backgroundcolor",Vec4(0,0,0,0.5))

colorlabel = Widget:Create("Example", 20, 20, 300, 80, base, "Scripts/GUI/Label.lua")
colorlabel:SetString("align","Center")
colorlabel:SetString("valign","Center")
colorlabel:SetBool("border",true)

gui:Hide()
toggle = 0

clip = 10
Ammo = 100
counter = 1400

while not window:KeyHit(Key.Escape) do
	if window:Closed() then return false end
    
	box:Turn(Time:GetSpeed()*0.5,Time:GetSpeed()*0.3,0)
	
	if window:KeyHit(Key.Space) then
		toggle = 1 - toggle
		if toggle == 1 then 
			gui:Show()
		else
			gui:Hide()
		end
	end
	Time:Update()
	world:Update()
	world:Render()
	
	context:SetBlendMode(Blend.Alpha)
	context:SetColor(1,0,0,.5)
	context:DrawText(string.format("Ammo1: "..clip.. " | " ..Ammo), 100, 80)
	context:DrawText("Press SPACE to toggle gui", 100, 300)
	context:DrawText(counter,38,30,300,300,Text.VCenter+Text.Center)
	context:SetBlendMode(Blend.Solid)
	--base:Redraw()--uncomment this and you will draw the new DrawText() version above
    context:Sync()
end

So based on that little example, all we need to fix the OP issue is to redraw the gamemenu's gui base. So if you add the redraw code to Menu.lua, it will draw properly everything in Jazz's example. So in the GameMenu:Update() function in the Menu.lua script, before it returns true, add the following code to line 480:

gui:GetBase():Redraw()

Edit -- this is admittedly a work around, but a fairly simple fix for something that Josh might not ever get around to resolving with DrawText() - especially since this version of DrawText() isn't officially documented.

Edit-- Or if you don't want to edit the Menu.lua script, then in the example Jazz provided, just add this before the context:Sync(true):

gamemenu.gui:GetBase():Redraw()

and everything appears to be drawn properly. This should also fix the problem the OP is having if he adds it to the default Main.lua as well.

August 7, 2018

Both of those work fine, even though there is no reason to use 'string.format()' in your example.

example:

window = Window:Create("example",0,0,400,400)
context = Context:Create(window)
world = World:Create()
light = DirectionalLight:Create()
light:SetRotation(45,45,0)
camera = Camera:Create()
camera:SetPosition(0,0,-3)

counter = 1400
toggle = 0
myfont = Font:Load("Fonts/arial.ttf", 24)
context:SetFont(myfont)

clip = 10
Ammo = 100

while not window:KeyHit(Key.Escape) do
	if window:Closed() then return false end

	if toggle==1 then counter = counter + 10 end
	if toggle==0 then counter = counter - 10 end
	if counter>=1400 then toggle = 0 end
	if counter<=10 then toggle = 1 end

	Time:Update()
	world:Update()
	world:Render()

	context:SetBlendMode(Blend.Alpha)
	context:SetColor(1,0,0,.5)
	context:DrawRect(38,30,300,300,1,30)
	context:DrawText(string.format("%.0f",counter),38,30,300,300,Text.VCenter+Text.Center)
	context:SetColor(1,1,1,1)
	context:DrawText("Ammo: "..clip.. " | " ..Ammo, 20,108)
	context:DrawText(string.format("Ammo: "..clip.. " | " ..Ammo), 20, 248, 300, 50, Text.VCenter+Text.Center)
	context:SetBlendMode(Blend.Solid)
	context:Sync(true)

end

At this point, you really need to provide something that we can try that replicates your issue. There is a reason no one has replied to your post - there's not enough information provided for anyone to do anything other than guess at what you are doing wrong. Actually provide a simple example that shows the problem that people can try and more than likely someone can help you.

August 5, 2018

Post something that will allow us to replicate the problem - the map, the project, the materials, etc. anything. Without an example to test, all we can do is guess at what the problem could be.

Edit: Since you provided nothing to let us test, I would guess that your issue is that the light is being blocked by a model / player. The spotlight shown is not the standard flashlight image obtained from the standard player model and script. So are we to assume you are using your own player model and script with a custom light?

August 3, 2018

Short answer: No. As it stands, the vegetation paint tool was meant for placement of thousands of static models not prefabs into a scene.

Long answer: There may be things that could be done as a work around for what you want. Explain what these scripts you are wanting to attach to the trees and rocks would do.

Example of affecting painted vegetation in a scene with a script from the old LE2 days:

July 31, 2018

The problem with using a CSG cylinder instead of a model is that its origin is at the center and not at the base (or the feet like with a character model). If you look at the SetInput() example, notice that the 'visiblecapsule' cylinder is set as a child to the pivot (which is the actual player) and the cylinder's center is positioned up 1 meter from the ground.

July 30, 2018

Ma-Shell obviously knows his vector math but like the OP, vector math has always been a struggle for me though I can handle 3D geometry fair enough . I have to break vector math down into steps that I can understand and follow, So even though you have an answer already (but past my ability to follow), I decided to take a crack at this. I used multiple references and I will post them with the steps as this was a fun learning experience for me.

So the problem was to find pointD given this information:

Given:

3 points given are all on the same plane, points A, B, & C
The angle between VectorA-B and VectorA-C is equal to angle between VectorA-B and VectorA-D
The distance from point A to point D is known

Find: point D

Assumptions:

The three given points are not collinear to allow for determining the plane equation
Due to equal angles between vectors, VectorA-MirroredPoint is the reflected vector of VectorA-C across the mirror plane that is along VectorA-B

Solution:

To reflect a point across the mirror plane, we must first find the plane that the three given points (A,B, and C) are located. Once we have planeABC, then the mirror plane will be orthogonal to that plane and pass through the line or vector AB. Once the mirror plane is determined, then we can mirror the point. And finally determine the point along the line where the fixed length would occur.

1) Find the plane that contains points A, B, and C. Using the 3 points, you can calculate two vectors:

1a) Find the two vectors given the 3 points - A, B, & C. --Finding a 3D line through 2 points --https://www.youtube.com/watch?v=JlRagTNGBF0
Vab = FindVector( pointA, pointB ) --vector AB
Vac = FindVector( pointA, pointC ) --vector AC

1b) Get the normal vector to two vectors. --Equation of a Plane Passing Through 3 Points --https://www.youtube.com/watch?v=0qYJfKG-3l8

normalvector = FindNormalOfTwoVectors( Vab, Vac )

1c) Get the Plane Equation using the normal vector and a point --Note that you can use any of the 3 points above and get same answer.

plane = GetPlaneEquation( normalvector, pointA )

2) To find orthogonal plane for mirror/reflection, we need two vectors and point on the plane -Just like before!
--Find the Equation of Plane Containing a Line and Orhtogonal to a Given Plane --https://www.youtube.com/watch?v=aupy5wwAyb8
2a) The normal of planeABC is a vector on the Mirror plane

Vn = FindNormalVectorOfPlane(plane)

2b) We want the mirror/reflection plane to also contain vector AB - which we have already found = Vab. Find the normal vector to the two vectors.

Mirror_normalvector = FindNormalOfTwoVectors(Vn, Vab)

2c) Now get the Mirrored Plane's Equation using pointA or pointB and its normal vector

Mirror_plane = GetPlaneEquation(Mirror_normalvector, pointA)

3) Now that we have the reflection plane that that runs through line AB, lets mirror pointC about it

--Find Mirror Image of a Point Reflected on Vector Plane
--https://www.youtube.com/watch?v=fvXG-DVx6z0

pointMP = FindMirroredPoint(Mirror_plane, pointC)

4) Find pointD that is Dist_AD from pointA

--Finding a point along a line in 3D given 2 points
--Used alternative method shown at bottom of page
--https://math.stackexchange.com/questions/83404/finding-a-point-along-a-line-in-three-dimensions-given-two-points

pointD = FindPointAlongLine(pointA, pointMP, Dist_AD)

Scripts:

Vector_Plane_PointReflection_Equations.lua contains the functions shown above Vector_Plane_PointReflection_Equations.lua
Main.lua contains the example script that shows how to use the functions Main.lua

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