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This uses the Quake light animation presets to add some interesting color modulation to any entity. ColorChanger.zip The following presets are available: Normal Flicker Slow Strong Pulse Candle 1 Fast Strobe Gentle Pulse 1 Flicker 2 Candle 2 Candle 3 Slow Strobe Flourescent Flicker Slow Pulse Todo: The candle presents don't look right to me, but I'm not sure what they are supposed to look like. I remember them as being a gentle flicker. There is no interpolation between the nearest two values, it just grabs one single value, so it's not very smooth. I guess this is appropriate for the strobe effects, but not for others.

I've been spending the past few days trying to figure out how to add SDL2 to Leadwerks, as it has an additional Lua binding that would be nice to have. Not to mention the gamepad support (which is the main reason because just adding XInput only would give support for XBox 360 and Dualshock 3 controllers). Not having any experience with an engine like Leadwerks, application building, or libraries has severely impacted my ability to figure out what to do in my current situation. I know I need to include the library and expose it to Lua, but I don't know how to do that, and I don't know how to actually add it to the engine either. I've taken a look at some resources online, such as lazyfoo, and it hasn't really helped me understand. Any help or other resources that could be passed along to me would be greatly appreciated. Thanks!

Here the current Camera Dolly Component i created. It consists of 2 Components. The Camera Dolly Component itself. The Camera Dolly Event Component. Usage Extract and place it into your `Souce/Components` directory. Add a Camera to your Scene. Add a "Empty" Node to your scene that will contain the Camera Spline Path. Add "Empty" Nodes inside this CameraPath node that defines the path the camera will move along. (takes the rotation into account as well as long as no "Point Camera At" node is selected. Name each "Empty" Node path point "p1", "p2", "p3" and so forth. (subject to change) and order the nodes accordingly. At the end this should look something like this in your Scene list: In the Camera itself with the CameraDolly component added, select the CameraPath node and optionally a node where the camera should point at. If you want to do something as soon as the Camera reaches a point along the path, add the CameraDollyEvent Component to one of the path nodes and add it to the Flowgraph. Todo and known issues The order of nodes in the Editor is not always the same as returned by the API (see https://www.ultraengine.com/community/topic/65647-moving-entities-in-editor-looses-order-and-cannot-be-moved-to-top/ ) Its difficult to determine the rotation of points without visualisation. Its difficult to guess the path the camera takes along the spline without visualisation. Movement speed is not yet Update thread independent. (unlikely but possible, still thanks to Josh for adding `World:GetSpeed()`). Rotation might not work (see https://www.ultraengine.com/community/topic/65628-lua-entitygetrotation-always-returns-vec3-000/ ) Download CameraDolly.zip

Tried: GetComponent("Mover") GetComponent(Mover) GetComponent<Mover>() This example also not working https://www.ultraengine.com/learn/Entity_GetComponent?lang=lua require "Components/Motion/Mover" --Get the displays local displays = GetDisplays() --Create a window local window = CreateWindow("Ultra Engine", 0, 0, 1280, 720, displays[1], WINDOW_CENTER | WINDOW_TITLEBAR) --Create a framebuffer local framebuffer = CreateFramebuffer(window) --Create a world local world = CreateWorld() --Create a camera local camera = CreateCamera(world) camera:SetClearColor(0.125) camera:SetPosition(0, 0, -2) --Create a light local light = CreateBoxLight(world) light:SetRotation(45, 35, 0) light:SetColor(2) light:SetRange(-5, 5) --Create a model local box = CreateBox(world) box:SetColor(0,0,1) --Add a component for automatic motion local component = box:AddComponent(Mover) component.rotationspeed.y = -2 box.mover.rotationspeed.x = 2 local componentTest = box:GetComponent("Mover") if (componentTest ~= nil) then Print("Success") end while window:KeyDown(KEY_ESCAPE) == false and window:Closed() == false do --Update the world world:Update() --Render the world to the framebuffer world:Render(framebuffer) end

Editor in lua project open Save As window when i click Run or Debug Game Last update in Steam beta branch

1. New game 2. Esc to call menu 3. Press Main menu 4. Continue game 5. If no app is froze yet do paragraph 2 again. Usually it happens at 2nd continue game but often happen at 1st too, Same approach works for me in main C++ project, game.lua globals.lua main.lua

Plays a sound continuously or intermittently. AmbientNoise.zip

This component will copy the rotation of another entity, with adjustable smoothing. MatchRotation.zip

Here's a new lib that i just finished that will allow game controller support for Lua fans! EDIT: Source: https://onedrive.live.com/redir?resid=1653f4923c37f970!278&authkey=!ABW8a3PdvzR_8cE&ithint=file%2czip Binaries (dll & so): https://onedrive.live.com/redir?resid=1653f4923c37f970!284&authkey=!AM0p2lTBH1mMSzk&ithint=file%2czip A lua example is provided, you can simply overwrite your existing App.lua with mine on a new test project. * Note: Lua sandbox must be disabled to use libs. Unfortunately i don't have linux installed so i couldn't compile it for that platform and I was able to compile it under Linux but i didn't get the chance to test it as i don't have the sdl2 binary libs. I included the full source should anyone want to re-compile it. Those that don't want to, simply copy LuaGamePad.dll file where your game executable is. You'll need to copy SDL2.DLL there as well, it's included. Tested with: - Logitech Rumblepad - Xbox 360 controller (XInput) Cheers!

Hi there team, time no see... I'm still working on the v4.0 Update for my Steam game. And one of the addons inside this update, was the option of drive an Opel Kadett car... And here is my question about... I have develop the mirror effect with a Camera using RenderTarget option on a Texture, and then the script: Script.TexturaProyecta=""--string "Textura" function Script:Start() local tex=Texture:Load("Materials/MisTexturas/Camaras_Texturas/"..self.TexturaProyecta..".tex") self.entity:SetRenderTarget(tex) end This works fine, but i've got a problem with the final image... Is there a way for make MIRRORED the image on the mirror? I've tried mirroring the texture, or using 2 cameras, but nothing works for me. I've got the same problem on another map: Many thanks in advance for your help.

Hello team, I'm going crazy with this bull****-idea... Is there any LUA command that allows us to obtain the name of the map we are on? I want to store the map name we are playing in a String variable, and then execute an IF to validate that value so that: - If I am in the map bull****.map a variable has "OK" text. - If I am in the map bullface.map the previous variable has "NotOK" text. (sight) I am unable to get the map name to save it in the global variable. And I don't know why... I have created a script where I enter manually the name... But that script (despite being assigned to a pivot in the map that is executed when the map is loaded) is not able to modify the value of the global variable defined in main.lua I have tried to use the mapfile variable used in main.lua of the project, but still don't know how to use it to get the name of the map we are on... This question may seem simple, but it's really driving me crazy.

Hi everyone, I'm currently encountering an issue with a Pick operation in my Lua code and I'm hoping someone can help me figure out what I'm missing. Here's the context: I have a player controller, which is essentially a pivot that creates a light and a camera. The player controller doesn't involve any movement, the mouse position on the screen simply influences the camera rotation. I also have an enemy that randomly spawns and passes in front of the light, down a corridor. I want to check two things - if the light is on, and if the enemy crosses the light's path. If both conditions are met, I want to call a method from the player script to the enemy script. Here's the relevant part of my player controller code which handles the light being on and the Pick operation: function Script:UpdateWorld() [...] if not self.flashlight:Hidden() then local pickInfo = PickInfo() local i**** = self.entity.world:Pick( self.entity:GetPosition(), self.lightRayEnd:GetPosition(), pickInfo, .25, false, Collision.Character ) if i**** and pickInfo.entity:GetKeyValue("classname") == "npc_nurse" then pickInfo.entity.script:SetPlayerIsShiningLight() end end end The flashlight check works as expected. However, I'm having trouble with the Pick method. It seems to correctly pick up the enemy when it crosses the ray's path. But it also appears to pick up another entity. I've simplified my map to include only a floor for the enemy to walk on and the basic set-up for the player controller. I've confirmed that the KeyValue is being correctly set in the enemy script (in the Start method), and that the collision is set to Character. Through debugging (I've removed all the console debug statements from the code above for clarity), I found that when I test for the pick position, it returns 0,0,0. To make sure I wasn't missing something in my calculations, I created another pivot to mark the end of the raycast (self.lightRayEnd). Does anyone have any idea what I could be doing wrong, or what might be causing this issue? I appreciate any input or suggestions. Thanks!

How do I end a Leadwerks program using a script. I would to like to end the program when the quit button is pressed but can't work out how to do this. Also should I release all entities and sounds before closing or doesn't it matter. Thanks in advance.

Hello, I would like to take a JSON file and read its content into a normal Lua string. Even better, I would like to put a JSON text into a Lua table directly, if it's possible. So far, I've found this Lua lib for converting a JSON string into a Lua table and vice versa. However, I don't see how to read a whole file as a string. Thank you in advance! P.S. I know how to read an individual line with this function.

Just some background: i am making a game for a research project for school. I have no prior experience with coding so I'm a bit dumb Here's my question: How do i code in my animations? there are a lot of little things out there but they don't help me, i would appreciate it if someone were to explain it to me for my specific case. i have all of the animations done, i made them in blender. so far the only code i have is from these two posts, however i've moved the camera so that it is from a third person view: this whole animation thing has really been demotivating as i just dont know what i need so it would be nice to move past this to something equally as painful to find out. btw whilst researching i found there is very little helpful information out there anymore. there are countless posts where there are videos and websites linked however there they are either taken down or private, which is annoying because they could be helpful. either way, thank you for reading, i hope you understand what i mean and hope you might help me. Honestly all i need is a step-by-step (kind of) guide to how i get my animations to show for all my characters.

can someone please help me i made a inventory for my game but when you place items in the inventory the image does not show i have gone over and over cant cant find the error. can anyone do me a working inventory script please :-) would appreciate it.

so I try to get the center of the screen and find the mouse position and then find the difference then using ATan(change in y/ change in x) to find the angle the object must rotate to and set the angle to that, the only issue is when the mouse x is <= 0 the object flips (so lets say the right side of the object was facing the mouse it then becomes the left side) I assume this issue is to do with the fact that ATan(change in y/change in x)=ATan(-change in y/-change in x) but here is my code:

During development of Leadwerks Game Engine, there was some debate on whether we should allow multiple scripts per entity or just associate a single script with an entity. My first iteration of the scripting system actually used multiple scripts, but after using it to develop the Darkness Awaits example I saw a lot of problems with this. Each script used a different classname to store its variables and functions in, so you ended up with code like this: function Script:HurtEnemy(amount) if self.enemy ~= nil then if self.enemy.healthmanager ~= nil then if type(self.enemy.healthmanager.TakeDamage)=="function" then self.enemy.healthmanager.TakeDamage(amount) end end end end I felt this hurt script interoperability because you had to have a bunch of prefixes like healthmanager, ammomanager, etc. I settled on using a single script, which I still feel was the better choice between these two options: function Script:HurtEnemy(amount) if self.enemy ~= nil then if type(self.enemy.TakeDamage)=="function" then self.enemy.TakeDamage(amount) end end end Scripting in Turbo Game Engine is a bit different. First of all, all values and functions are attached to the entity itself, so there is no "script" table. When you access the "self" variable in a script function you are using the entity object itself. Here is a simple script that makes an entity spin around its Y axis: function Entity:Update() self:Turn(0,0.1,0) end Through some magic that is only possible due to the extreme flexibility of Lua, I have managed to devise a system for multiple script attachments that makes sense. There is no "component" or "script" objects itself, adding a script to an entity just executes some code that attached values and functions to an entity. Adding a script to an entity can be done in C++ as follows: model->AttachScript("Scripts/Objects/spin.lua"); Or in Lua itself: model:AttachScript("Scripts/Objects/spin.lua"); Note there is no concept of "removing" a script, because a script just executes a bit of code that adds values and functions to the entity. Let's say we have two scripts named "makeHealth100 and "makeHealth75". MakeHealth100.lua Entity.health=100 MakeHealth75.lua Entity.health=75 Now if you were to run the code below, which attaches the two scripts, the health value would first be set to 100, and then the second script would set the same value to 75, resulting in the number 75 being printed out: model->AttachScript("Scripts/Objects/MakeHealth100.lua"); model->AttachScript("Scripts/Objects/MakeHealth75.lua"); Print(entity->GetNumber("health")); Simple enough, right? The key point here is that with multiple scripts, variables are shared between scripts. If one scripts sets a variable to a value that conflicts with another script, the two scripts won't work as expected. However, it also means that two scripts can easily share values to work together and create new functionality, like this health regeneration script that could be added to work with any other scripts that treat the value "health" as a number. HealthRegen.lua Entity.healthregendelay = 1000 function Entity:Start() self.healthregenupdatetime = CurrentTime() end function Entity:Update() if self.health > 0 then if CurrentTime() - self.healthregenupdatetime > self.healthregendelay then self.health = self.health + 1 self.health = Min(self.health,100) end end end What about functions? Won't adding a script to an entity overwrite any functions it already has attached to it? If I treated functions the same way, then each entity could only have one function for each name, and there would be very little point in having multiple scripts! That's why I implemented a special system that copies any added functions into an internal table. If two functions with the same name are declared in two different scripts, they will both be copied into an internal table and executed. For example, you can add both scripts below to an entity to make it both spin and make the color pulse: Spin.lua function Entity:Update() self:Turn(0,0.1,0) end Pulse.lua function Entity:Update() local i = Sin(CurrentTime()) * 0.5 + 0.5 self:SetColor(i,i,i) end When the engine calls the Update() function, both copies of the function will be called, in the order they were added. But wait, there's more. The engine will add each function into an internal table, but it also creates a dummy function that iterates through the table and executes each copy of the function. This means when you call functions in Lua, the same multi-execution feature will be available. Let's consider a theoretical bullet script that causes damage when the bullet collides with something: function Entity:Collision(entity,position,normal,speed) if type(entity.TakeDamage) == "function" then entity:TakeDamage(20) end end If you have two (or more) different TakeDamage functions on different scripts attached to that entity, all of them would get called, in order. What if a function returns a value, like below?: function Entity:Update() if self.target ~= nil then if self.target:GetHealth() <= 0 then self.target = nil --stop chasing if dead end end end If multiple functions are attached that return values, then all the return values are returned. To grab multiple returned values, you can set up multiple variables like this: function foo() return 1,2,3 end a, b, c = foo() print(a) --1 print(b) --2 print(c) --3 But a more practical usage would be to create a table from the returned values like so: function foo() return 1,2,3 end t = { foo() } print(t[1]) --1 print(t[2]) --2 print(t[3]) --3 How could this be used? Let's say you had a script that was used to visually debug AI scripts. It did this by checking to see what an entity's target enemy was, by calling a GetTarget() function, and then creating a sprite and aligning it to make a line going from the AI entity to its target it was attacking: function Entity:UpdateDisplay() local target = self:GetTarget() self.sprite = CreateSprite() local p1 = self.entity:GetPosition() local p2 = target:GetPosition() self.sprite:SetPosition((p1 + p2) * 0.5) self.sprite:AlignToVector(p2 - p1) self.sprite:SetSize(0.1,(p2-p1):Length()) end Now let's imagine we had a tank with a main gun as well as an anti-aircraft gun that would ward off attacks from above, like this beauty I found on Turbosquid: Let's imagine we have two different scripts we attach to the tank. One handles AI for driving and shooting the main turret, while the other just manages the little machine gun. Both the scripts have a GetTarget() function, as the tank may be attacking two different enemies at once. We can easily modify our AI debugging script to handle multiple returned values as follows: function Entity:UpdateDisplay() local targets = { self:GetTarget() } --all returned values get put into a table for n,target in ipairs(targets) do local sprite = CreateSprite() self.sprites.insert(sprite) local p1 = self.entity:GetPosition() local p2 = target:GetPosition() sprite:SetPosition((p1 + p2) * 0.5) sprite:AlignToVector(p2 - p1) sprite:SetSize(0.1,(p2-p1):Length()) end end However, any scripts that are not set up to account for multiple returned values from a function will simply use the first returned value, and proceed as normal. This system supports both easy mix and match behavior with multiple scripts, but keeps the script code simple and easy to use. Scripts have easy interoperability by default, but if you want to make your function and variable names unique to the script it is easy to do so. Let me know if you have any other ideas for scripting in Turbo Game Engine.

Tell me how to get a similar result, for bending fishing rods under load?

Can i create a fracture sim based with voronoi in Leadwerks that control over on vertices or edges ? is it possible ? Lua or C++?

How do I tell if a variable is odd or even using Lua? % is used in other languages is it the same with Leadwerks?

When using the lua script to load a prefab made from csg's the collision does not load.

While writing a server browser I discovered that RemoteGame does not not have a port property. So if you do set your server on a non default port, you will not be able to connect to it by using the server list. Which leads to this issue:

Here is how i made it possible to call C++ from LUA. I want to build Multiplayer game in Leadwerks. But i couldn't find networking libraries and threading libraries that would make it usable in Lua. So i build a Networking client in C++ with libcurl and libpthread . But i want to still use the Lua scripting on the prefabs since a lot of work is already done for me here. And also programming in Higher level languages is just faster. I decided to use the libtolua++ libraries, since this is already build into Leadwerks. I work on Ubuntu 15.04. Here the tolua++ libs are installed with: sudo apt-get install libtolua++5.1-dev The tolua++ program needs a pck file which shall contain the c++ like seudo code that is translated into lua classes. My package: $#include "shot.h" class ShotListener { ShotListener(); ~ShotListener(); void shot(Object* oEntity, float damage); float getHealth(Object* oEntity); }; I have made two functions. One to emit shots detected on the Entities from the Lua scripting. Another to get the current health status from C++ side. My actual ShotListener.h class looks like this: #pragma once #include "App.h" #include "Leadwerks.h" using namespace Leadwerks; class ShotListener { private: public: ShotListener(void) { } ~ShotListener(void){} void shot(Object* oEntity, float damage) { App *app = App::getInstance(); Entity * entity = (Entity*)oEntity; app->entityShot(entity, damage); return; } float getHealth(Object* oEntity) { App *app = App::getInstance(); Entity * entity = (Entity*)oEntity; float value = app->getEntityHealth(entity); return value; } }; As you can see i changed the default App class into a Singleton so that i can get the App object from the instances of ShotListener that is used from Lua. Having placed these two files in the same folder i ran the following function from the terminal: tolua++5.1 -o tolua_shot.cpp -H tolua_shot.h -n Shot shot.pkg This generated two files tolua_shot.cpp and tolua_shot.h that i included in my C++ project along with the shot.h file. This way i can do a self.shotListener = ShotListener:new() In the Script:Start() function in mu Lua objects and a self.shotListener:shot(self.entity, self.hits) When Hurt is called in the Lua object. After this i just had to sort out all the Segmentation error bugs because of multithreading. I forgot to mention that the ShotListener Lua also needs to be initialized in the main.cpp before app->Start() with the following: if (Interpreter::L==NULL) Interpreter::Reset(); tolua_ShotListener_open(Interpreter::L);

Heyas, Should Script:Collision be able to detect if something has spawned inside of a defined trigger area? I'm using a rectangular CSG with CollisionType:Trigger to define an a trigger area. I want to detect when another CSG (Collisiontype: Prop) spawns inside the trigger area but seems to fail in that regard. Does the spawning CSG need speed (momentum) to be detected? Thanks in advance!