[Entityparent only for position ?]

I believe you can rotate child with entity->Turn() to compensate parent rotation.

[Restrict physics axis]

I tested this case in LE2. And it works fine with GetVelosity()/SetVelocity() instead of GetPosition()/SetPosition(). But I can't see SetPosition() in LE3 documentation.

[Restrict physics axis]

I may assume that both physics driven update and entity->SetPosition() are producing new position in world->Update() simultaneously. So they concurrent to each other and SetPosition() wins.

 

I don't know if it will be suitable for you, but you can try call entity->SetPosition() not every frame, but every second frame. Thus first world->Update() will move entity by physics and the second one will execute SetPosition().

 

Or you can try to call world->Update() twice in one frame for that purpose. And use SetPosition() between them. But I'm afraid it will eat a lot of FPS.

[plane]

Did you try to create "surface" from scratch?

Like in docs: http://www.leadwerks.com/werkspace/page/documentation/_/command-reference/surface/surfaceaddtriangle-r218

[LE2 : How to determine if a model is being drawn on screen]

But note, if you didn't set "occlusion culling" mode for entity, the "frustrum culling" only will be checked with EntityCulled().

[Legacy website sections and documentation]

Here is error message in web browser:

 

 

Full text under spoiler.

 

MediaWiki internal error.

 

Original exception: exception 'DBQueryError' with message 'A database error has occurred

Query: SELECT value,exptime FROM `objectcache` WHERE keyname='leadwerk_wikiadmin:messages:en'

Function: MediaWikiBagOStuff::_doquery

Error: 1286 Unknown storage engine 'InnoDB' (localhost)

' in /home/leadwerk/public_html/wiki/includes/db/Database.php:606

Stack trace:

#0 /home/leadwerk/public_html/wiki/includes/db/Database.php(561): Database->reportQueryError('Unknown storage...', 1286, 'SELECT value,ex...', 'MediaWikiBagOSt...', false)

#1 /home/leadwerk/public_html/wiki/includes/BagOStuff.php(454): Database->query('SELECT value,ex...', 'MediaWikiBagOSt...')

#2 /home/leadwerk/public_html/wiki/includes/BagOStuff.php(324): MediaWikiBagOStuff->_doquery('SELECT value,ex...')

#3 /home/leadwerk/public_html/wiki/includes/BagOStuff.php(240): SqlBagOStuff->_query('SELECT value,ex...', 'leadwerk_wikiad...')

#4 /home/leadwerk/public_html/wiki/includes/MessageCache.php(246): SqlBagOStuff->get('leadwerk_wikiad...')

#5 /home/leadwerk/public_html/wiki/includes/MessageCache.php(606): MessageCache->load('en')

#6 /home/leadwerk/public_html/wiki/includes/MessageCache.php(543): MessageCache->getMsgFromNamespace('Mainpage', 'en')

#7 [internal function]: MessageCache->get('mainpage', true, true)

#8 /home/leadwerk/public_html/wiki/includes/StubObject.php(58): call_user_func_array(Array, Array)

#9 /home/leadwerk/public_html/wiki/includes/StubObject.php(76): StubObject->_call('get', Array)

#10 /home/leadwerk/public_html/wiki/includes/GlobalFunctions.php(467): StubObject->__call('get', Array)

#11 /home/leadwerk/public_html/wiki/includes/GlobalFunctions.php(467): StubObject->get('mainpage', true, true)

#12 /home/leadwerk/public_html/wiki/includes/GlobalFunctions.php(432): wfMsgGetKey('mainpage', true, true, true)

#13 /home/leadwerk/public_html/wiki/includes/GlobalFunctions.php(380): wfMsgReal('mainpage', Array, true, true)

#14 /home/leadwerk/public_html/wiki/includes/Title.php(293): wfMsgForContent('mainpage')

#15 /home/leadwerk/public_html/wiki/includes/Wiki.php(105): Title::newMainPage()

#16 /home/leadwerk/public_html/wiki/index.php(60): MediaWiki->checkInitialQueries(NULL, 'view')

#17 {main}

 

Exception caught inside exception handler: exception 'DBQueryError' with message 'A database error has occurred

Query: SELECT page_title FROM `page` WHERE page_is_redirect = '0' AND page_namespace = '8' AND (page_title not like '%%/%%') AND (page_len > 10000)

Function: MessageCache::loadFromDB

Error: 1286 Unknown storage engine 'InnoDB' (localhost)

' in /home/leadwerk/public_html/wiki/includes/db/Database.php:606

Stack trace:

#0 /home/leadwerk/public_html/wiki/includes/db/Database.php(561): Database->reportQueryError('Unknown storage...', 1286, 'SELECT page_ti...', 'MessageCache::l...', false)

#1 /home/leadwerk/public_html/wiki/includes/db/Database.php(969): Database->query('SELECT page_ti...', 'MessageCache::l...')

#2 /home/leadwerk/public_html/wiki/includes/MessageCache.php(329): Database->select('page', 'page_title', Array, 'MessageCache::l...')

#3 /home/leadwerk/public_html/wiki/includes/MessageCache.php(264): MessageCache->loadFromDB('en')

#4 /home/leadwerk/public_html/wiki/includes/MessageCache.php(606): MessageCache->load('en')

#5 /home/leadwerk/public_html/wiki/includes/MessageCache.php(543): MessageCache->getMsgFromNamespace('Databaseerror', 'en')

#6 /home/leadwerk/public_html/wiki/includes/GlobalFunctions.php(467): MessageCache->get('databaseerror', true, false)

#7 /home/leadwerk/public_html/wiki/includes/GlobalFunctions.php(432): wfMsgGetKey('databaseerror', true, false, true)

#8 /home/leadwerk/public_html/wiki/includes/Exception.php(70): wfMsgReal('databaseerror', Array)

#9 /home/leadwerk/public_html/wiki/includes/db/Database.php(2565): MWException->msg('databaseerror', 'Database error')

#10 /home/leadwerk/public_html/wiki/includes/Exception.php(192): DBQueryError->getPageTitle()

#11 /home/leadwerk/public_html/wiki/includes/Exception.php(155): MWException->htmlHeader()

#12 /home/leadwerk/public_html/wiki/includes/Exception.php(174): MWException->reportHTML()

#13 /home/leadwerk/public_html/wiki/includes/Exception.php(260): MWException->report()

#14 /home/leadwerk/public_html/wiki/includes/Exception.php(294): wfReportException(Object(DBQueryError))

#15 [internal function]: wfExceptionHandler(Object(DBQueryError))

#16 {main}

 

 

[Lua classes and inheritance]

There are tons of approaches to make inheritance in Lua.

 

First of all you need to decide - "do you really need inheritance?" Or you just need similar behave for group of objects?

 

In Lua you can override properties and methods of objects "on the fly". And you don't need "polymorphism" because Lua has no types in common and you don't have to deal with type-casting.

 

The easiest way (IMO) to create similar-behave objects - to make factory-functions for each type of objects.

 

function CreateInventoryItem(picture, weight)

local obj = {}

obj.picture = picture

obj.weight = weight

 

return obj

end

 

function CreateGunItem(picture, weight, damage)

local obj = CreateInventoryItem(picture, weight)

obj.damage = damage

 

return obj

end

[Texture selection per model instance shader [shader included]]

Brilliant solution!

[LE3 Physics AddForce]

Try to increase force.

Or decrease mass.

Or play around with friction adjustments (http://www.leadwerks.com/werkspace/page/documentation/_/command-reference/entity/entitysetfriction-r142).

[LE3 : Tutorial make attachable weapon from Blender]

I think it's better for perfomance to find the bone once and then store it in some variable. Not to look for it every update.

 

local child = self.entity:FindChild(self.LeftHand)

 

function Script:UpdatePhysics()

...

mat = child:GetMatrix();

self.weap:SetMatrix(mat)

[Making Menus For Our Games]

ParaToxic did something similar in LE2: http://www.leadwerks.com/werkspace/page/videos/_/-r179

[LE 3 speed :]

So we can conclude that LE2 is very fast engine but nobody (except couple of people and may be Josh) can use it properly to rich decent FPS and nice picture. It's very very tricky, I know.

 

That's why we can't see tons of games created with LE2. So will this situation repeat with LE3? May be to have a good engine is not enough?

 

Josh, did you consider ways to teach people use your engine(s) properly? And teach them to make decent games with engine? I know, you are a programmer and not a teacher. But think about it.

 

You teach people -> They make many decent games with LE -> More people see it -> More people buy LE

[Netwerks?]

I didn't try networking with Leadwerks. And may be RakNet is better. But you might look at integrated in Leadwerks 2 networking capabilities: http://www.leadwerks.com/werkspace/page/Documentation/le2/_/command-reference/networking/

[To lightmap or to not lightmap - that's my question]

As Red October already said, dynamic light eat a lot of FPS especially for complex scene with many point light sources (we experienced that in our project). Besides, dynamic light sources have strong limitations (light radius, shadow distance etc.).

 

Thus for best performance:

- bake as much as you can

- use as little light sources as possible

[Collider Boxes in the Editor ?]

Looks interesting. How did you do that in Editor?

 

Why are you using userdata? You can store Width, Height, Depth as "keys" for model. They will be stored as plain text in SBX, so you could change them manualy.

[How to show a ring around an object in editor]

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(...)

[How to show a ring around an object in editor]

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

 

 

[Animation]

Because KeyDown() means you are holding pressed key.

 

Let assume you are holding key "A".

 

After line

if (KeyDown(KEY_A)){sequence = 2;} else sequence = 1;

variable "sequence" will have value 2.

 

But after line

if (KeyDown(KEY_D)){sequence = 2;} else sequence = 1;

variable "sequence" will have value 1.

 

Because you are not holding "D" key pressed.

[Buffer Confusion]

A little example of using buffers: http://www.leadwerks.com/werkspace/topic/4746-load-texture-pieces/#entry41584

 

It's not a postprocess filter, but may be usefull for undestanding buffers.

[Load Assets to the memory fake]

Yes. It should work. You could hide preloaded entities or move them far away. But if you don't render the scene while loading it's not necessary.

 

I think it will be better to turn physics off for that preloaded entities to avoid collisions between them.

[game over]

How do I check collision speed?

I don't know if you can check collisions for character controller or not. But you could measure it's speed with GetBodyVelocity() and check for difference from previous frame.

[Oculus Rift]

Yeah. And in the future you could recognize a gamer by it's bandaged neck.

[[SOLVED] Error can't open scripts/class. Win32 OpenFileName()]

That was just accidental lucky guessing.

 

I suggest to rename topic to something like "error can't open scripts/class" for better searching possibilities.

[[SOLVED] Error can't open scripts/class. Win32 OpenFileName()]

Look here: http://msdn.microsoft.com/en-us/library/windows/desktop/ms646927%28v=vs.85%29.aspx

 

Pre-last comment.

[[SOLVED] Error can't open scripts/class. Win32 OpenFileName()]

Could that "Open file..." window change current working directory?

 

Try to load a scene with hardcoded path without opening dialog.