Leadwerks 3 "How do I ____?" Questions and Answers

[YouGroove]

What we can't do is copy and paste scripts in the same foledr and view like you created a new one

Copy is displayed and you copy.

But Paste do'nt appear ?

And we don't have rename also ? (that could be usefull for new copied scripts)

[cassius]

I have been studying the scripts for darkness awaits and understand what they do but I can;t figure out how they are called and from where they are called Whats the sequence of events?

I just don;t get this engine(yet).

[YouGroove]

Cassius :

It's like lot of other engine framworks :

You have start()

All inits will be here for the model attached to that script

UpdatePhysics()

Will be called each frame of the game, here you'll manage AI, animations fo your character for example

or any other stuff

 

Each script that is binded so something in the scene : Barabarian, light, a cube model etc ... will be called each frame of the game.

For example you put 2 goblins and attach goblinAI to each :

The engine will know :

Goblin1 driven by GoblinAI.lua

Goblin2 driven by GoblinAI.lua

 

Running the game :

Each frame the engine will look up at models, when it will encounter Goblins, because they have GolbinAI attached, the engine will call

GoblinAI on each goblin.

 

 

the game will call each frame the updatePhysics() of each 2 scripts:

GoblinAI for goblin 1

GoblinAI for goblin 2

 

Because variable delcared in GoblinAI are not public , it means for example HEalth variable or state_Ai variables are created for each goblin.

You can see that as instances :

Attaching GoblinAI to goblin1 in the scene create some GoblinAI instance that will manage golbin1

Attaching GoblinAI to goblin2 in the scene create some GoblinAI other new in memory instance that will manage golbin2

 

You can attach as many scripts to a model or character because the script always refers to the model it is attached to.

 

Perhaps it should be a section later on User Guide explaining that to people not knwoing events and game frameworks ?

[cassius]

I understand events. Got them in my le2 game.

Thanks.

[cassius]

if I add a goblin to the scene,how do I attach it.

[Josh]

Right click in the scene tree and select Add Script.

[cassius]

added a goblin to the scene and added scripts. It did not move.

[Josh]

• Set the mass to >0 and set the physics mode to character.
  
• Of course, he won't move unless there is a reason for him to, so he needs a player to attack.
  
• Add the animation manager script to see his animation in motion.
  

Or you can just drop in the goblin prefab and not worry about it.

[shadmar]

Is there any easy method to copy positions and rotation from one prefab to another (when using different ones)

In the editor.

[Josh]

Other than copying each field, no, not right now.

[cassius]

It worked when I copied and pasted the second goblin but not before.

[YouGroove]

Straneg ? Golbins don't attack each other in the game ?

The Goblin should attack player only ?

[Chris Vossen]

Straneg ? Golbins don't attack each other in the game ?

The Goblin should attack player only ?

 

They will only attack players:

 

function EnemyAttackForEachEntityInAABBDoCallback(entity,extra)

if extra~=entity then

if entity.player~=nil then

extra.goblinai:AttackEnemy(entity.player)

end

end

end

[YouGroove]

if entity.player~=nil then

 

 

Yes so why the game worked when Cassius added a goblin ? i thin he added the player also befoe, if not the goblins

won't move.

[cassius]

I just pasted the goblin from the one already in the scene.I suppose its scripts were copied too. The goblins don;t fight each other.

I am missing something cos when I just drag a character on scene and add script it don;t move.

But i am using the eval version. I won;t purchase until I fully understand how it works.

 

Funny enough my le 2 game is very similar to Darkness awaits. It has a castle with red carpet and sword fights, The enemies also follow player everywhere.

[YouGroove]

I am missing something cos when I just drag a character on scene and add script it don;t move.

But i am using the eval version. I won;t purchase until I fully understand how it works.

 

 

Sorry, but you'll have to learn scripting.

 

A character will only move , if the script you attached make it move.

If you attached GoblinAI.LUA scritp , this script only moves when it finds a character with a script named "Player" attached to it :

 

if entity.player~=nil then

 

This means :

entity : this is the model found by detection code

.player : Is the name of the script attached to that entity

so

entity.player means AN ENTITY WHOSE ATTACHED SCRIPT IS NAMED PLAYER.

 

Or am i wrong and didn't understood anything ?

[shadmar]

I was watching Andy's : http://www.leadwerks.com/werkspace/page/videos/_/-r192

And immediately thought of portal somehow.

Is it possible to render a camera to a texture?

[Chris Vossen]

I was watching Andy's : http://www.leadwerks.../videos/_/-r192

And immediately thought of portal somehow.

Is it possible to render a camera to a texture?

 

Josh says that buffers similar to LE2 are in the code, but not officially supported at this time.

[Josh]

The GL 4 renderer actually has MSAA buffers, but it's not ready of course.

[shadmar]

Ok, no problem.

[tjheldna]

Hi

 

Does anyone know how to set a custom collision type like you could do in LE 2.5 in LE3 (C++)?

 

Cheers!

[Guest Red Ocktober]

yeah... Andy's scene does sorta remind you of Portal, doesn't it.... same (similar) artwork style... similar lighting...

 

--Mike

[shadmar]

Is there currently any method I can pass a varying to all shaders in one go without looping through all materials form all surfaces to find shader and send shader:SetFloat ?

(like for fog if I wanted)

 

If not could maybe mat files be used for custom varys.

Or maybe a Shader:SetGlobalFloat/vec2,3,4.. for a push out to all. (not so sure if that would be smart either)

[Admin]

There's a couple ways to approach this: material hooks, shader hooks, or global shader variables. I will have to think about it and see which is most efficient. I don't want any real-time string comparisons to be used. Because this is highly repetitive code.

[tjheldna]

Sorry to bump but anyone know how to set custom collision types in Leadwerks 3? I know how to set a collision type.

 

Cheers!