Setting a class for certain objects

[AggrorJorn]

hi.

 

I want to know how to make objects (onjects you can pick up), member of a class. for example: an oil lamp becomes member of the class "PickingUpItem".

 

this way I can send Raytraces to this class only. Only way no to do this is with ENTITY_MODEL.

[AggrorJorn]

Perhaps I have to use a different explanation. The raytraces that are used with the switch in the tunnel level, check on the ENTITY_MODEL. when it is a moddel a message can be sent.

 

I wonder if I can make those raytraces check on my own kind of class instead of every moddel.

[Josh]

Why would you want to only check for objects that can be picked up? If there is a wall between you and the object, the raycast won't see it.

 

Use collision types for this.

[AggrorJorn]

I want to display a hand icon on the mouse position when a player can interact with an object. As it is now, the raytrace returns a true when it hits a moddel, thus it prety much always shows a hand icon on screen (walls are also moddels and will activate the hand icon). The hand icon only needs to appear when a raytrace sees a certain moddel of a certain class.

[Rick]

You could give a setting for models that you want to be picked. pickable = true for example. Then check this setting.

[AggrorJorn]

You could give a setting for models that you want to be picked. pickable = true for example. Then check this setting.

 

hmm, didn't think of that, nice one. For the first time I used a LUA menu style for this (getting a menu option makes it look really professional )

--hand icon menu
group=grid:AddGroup( "Hand icon" )
group:AddProperty( "Show hand icon", PROPERTY_BOOL )

 

 

this code was added to the switch.lua. If I want to retrieve the state of the bool value from the FPS Controller script, do I have to use the GetKey and Setkey commans for this?

[Josh]

You could use model:GetKey() or you could set an internal value when the Lua script calls SetKey().

 

function SetKey(model,key,value)

if key=="pickable" then

entity.pickable=tonumber(value)

else

end

end

[AggrorJorn]

I'm not 100% sure how to use the SetKey and GetKey functions. I have the following in the switch.lua:

--hand icon menu
group=grid:AddGroup( "Hand icon" )
group:AddProperty( 'Show hand icon', PROPERTY_BOOL,'showicon')

function SetKey(model,key,value)
if key=="showicon" then
	entity.pickable=tonumber(value)
       end
return 1
end

Is 'showicon' in AddProperty the Key here?

 

 

In the FPScontroller I use a raytrace:

pick=CameraPick(camera,Vec3(GraphicsWidth()/2,GraphicsHeight()/2,2.0),0,0)
	if pick~=nil then
		repeat
			if pick.entity:GetClass()==ENTITY_MODEL then
				break
			end
			pick.entity=pick.entity.parent
		until pick.entity==nil

		-- show hand true or false
		if pick.entity~=nil then
  		 ????GetKey("showicon","true")
	  		  	handIcon = true    
		end
	else
	handIcon = false	

	end

 

At the question marks I need to retrieve if the value is true or false from 'showicon' in the switch.lua. As I understand this is done by the GetKey.

[Rick]

I'm not 100% sure how to use the SetKey and GetKey functions. I have the following in the switch.lua:

--hand icon menu
group=grid:AddGroup( "Hand icon" )
group:AddProperty( 'Show hand icon', PROPERTY_BOOL,'showicon')

function SetKey(model,key,value)
if key=="showicon" then
	entity.pickable=tonumber(value)
       end
return 1
end

Is 'showicon' in AddProperty the Key here?

 

 

In the FPScontroller I use a raytrace:

pick=CameraPick(camera,Vec3(GraphicsWidth()/2,GraphicsHeight()/2,2.0),0,0)
	if pick~=nil then
		repeat
			if pick.entity:GetClass()==ENTITY_MODEL then
				break
			end
			pick.entity=pick.entity.parent
		until pick.entity==nil

		-- show hand true or false
		if pick.entity~=nil then
  		 ????GetKey("showicon","true")
	  		  	handIcon = true    
		end
	else
	handIcon = false	

	end

 

At the question marks I need to retrieve if the value is true or false from 'showicon' in the switch.lua. As I understand this is done by the GetKey.

 

 

In your set key I think you need to get the entity from the model passed into the function. I think there is some base_Entity() or whatever where you can pass in a model and get the entity (which would really be a lua table object and not an LE TEntity).

 

You would probably need to do the same thing in your picking code as well because I think pick.entity is TEntity and not the lua table object, but I could be wrong there.

[AggrorJorn]

I think this is all a litlle bit above me. I think I''ll wait for some tutorials about this. Thanks for your help, I apprecate it.

[AggrorJorn]

I'll make a new topic for this, as the question is now different.