How to show a ring around an object in editor

[Roland]

Hello there all LUA Guru's

 

I have the need for showing a colored ring around an object in the Editor (not in game) when its selected. Any suggestion on how to accomplish that ?

 

 

Like this

 

[Daimour]

I did something similar for waypoints.

Video:

 

 

But it's not a ring actually (it's a 12 connected lines). It's not for selected entity (only for newly created or moved entity). It's for only one entity class (so it works not for all entities on the scene). And it's hiding automatically after some period of time.

 

Code example (for entity-attached lua-script):

 

local class=CreateClass(...)

 

function class:CreateObject(model)

local object=self.super:CreateObject(model)

 

function object:Init()

self.show_markers = 0

 

AddHook("Flip", object.Render)

end

 

function object:Render()

if object.show_markers > 0 then

SetColor(Vec4(1, 1, 0.5, 1))

local pos = EntityPosition(object.model, 1)

local range = 5

 

for i = 1, 12 do

local angle = math.rad((i - 1) * 30)

local dx = math.cos(angle) * range

local dz = math.sin(angle) * range

local pos1 = CameraUnproject(fw.main.camera, Vec3(pos.x + dx, pos.y, pos.z + dz))

angle = math.rad(i * 30)

dx = math.cos(angle) * range

dz = math.sin(angle) * range

local pos2 = CameraUnproject(fw.main.camera, Vec3(pos.x + dx, pos.y, pos.z + dz))

 

if pos1.z >= 0 and pos2.z >= 0 then

DrawLine(pos1.x, pos1.y, pos2.x, pos2.y)

end

end

end

 

SetColor(Vec4(1, 1, 1, 1))

end

 

function object:ReceiveMessage(message,extra)

local values=string.Explode(message,",")

local command = values[1]

if command == "hide_markers" then

self.show_markers = 0

end

end

 

function object:ShowMarkers()

self.show_markers = os.clock () + 1

SendEntityMessage(self.model, "hide_markers", nil, 1000)

end

 

function object:UpdateMatrix()

self:ShowMarkers()

end

 

function object:UnlockKeys()

self:ShowMarkers()

end

 

function object:Free(model)

RemoveHook("Flip", object.Render)

self.super:Free()

end

 

object:Init()

end

 

 

[Roland]

Great. Exactly what i need. Does not have to be exactly a ring.

Many thank's

[Daimour]

You can try to add this code to class.lua script.

So it will work for all entities on the scene.

If they have attached script with:

local class=CreateClass(...)