Lua is a powerful, fast, lightweight, embeddable scripting language. Lua is widely used as a scripting language by game programmers, perhaps owing to how easy it is to embed, its fast execution, and its short learning curve.
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0answers
15 views
Console Invoke from Lua
Is there any possible way I can invoke the console with lua? The documentation for cryengine lua functions isn't very helpful.
0
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1answer
19 views
Corona SDK, do I need to pay for it?
I'm a single dev making simple mobile games. I was looking at corona sdk for my next project. I don't understand what the difference between the paid version and the free version is. It seems that ...
0
votes
1answer
34 views
load all files out of folder as resources in lua and love2d
If i use this code
-- some lua file
-- some code
local IMAGE_FILES = {"file1";"file2";"file3";"file4}
-- some code
function loadRes()
-- some code
-- load all images:
for i,v in ...
1
vote
0answers
29 views
What LuaJit threading archietecture should I use?
I am in the process of designing my own Game Engine for use in a real time CRPG - think Baulder's Gate. I know most of my specifications right now, and I am currently in a planning phase.
I chose Lua ...
6
votes
3answers
165 views
Which parts of game should belong to engine and which should belong to scripts?
Often, the game is splitted into engine code (i.e. C++) and scripts (i.e. Lua).
The question is which parts / modules of game code should typically belong to engine, and wchich should belong ...
0
votes
1answer
33 views
In ROBLOX, how can I check what is in front of me?
In ROBLOX Studio I need to check what part is in front of the model Freddy.
I need to set the variable called thingInFront to the part that is in front of the model Freddy so that I can decide ...
1
vote
1answer
51 views
Scripting: to block or not to block
Context: I'm making a little "program your robot army" sort of game in Java in which the player writes Lua scripts (which are then run by LuaJ) to program their robots to do stuff. So far there are ...
1
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1answer
61 views
LOVE Physics - Joint Stretching
After asking a similar question yesterday I've come across another problem with using joints in box2D / LOVE and trying to create a weighted chain.
Everything is set up as follows, I've tried to ...
1
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1answer
86 views
LOVE Physics - Breaking Joint Chains (LUA / Box2D)
Wasn't sure whether to post here or on SO so please move if needed.
I've been having a look into the box2D physics API provided by LOVE to try and create a swinging flail or weighted rope but I'm ...
0
votes
1answer
187 views
Garry's Mod HatsChat2 chat colors permissions messed up?
So I'm making a garry's mod server and I'm trying to work on my chat box addon that I installed and was working on that only premium and superadmin can use colors in the chat and only want them to be ...
1
vote
1answer
57 views
Passing an SDL KeyboardState(Uint8*) to Lua
I'm working on my first big project and I've decided to integrate Lua with my C++ framework. Everything's worked out so far, but the only way I've managed to pass the SDL_GetKeyboardState(NULL) array ...
1
vote
1answer
87 views
Registering a C++ callback with Lua API without additional libraries
Basically, I'm trying to register a callback into a Lua state like this:
class MyClass
{
public:
int myLuaFunction(lua_State* L)
{
//do something
}
};
I ...
0
votes
1answer
28 views
Nested ipairs for basic hit detection
So i'm developing my first game using Löve, the game is a basic asteroids clone. Everything is going well so far, until I decided to actually add asteroids.
I'm trying to make a basic hit-detection ...
0
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0answers
57 views
How to implement Lua thread for Sleep function
I am running into a problem in my game engine right now.
I want to be able to call Sleep(number_of_seconds) from .lua file (1 only) and halt the execution of the lua file, WHILE the game is running ...
0
votes
1answer
174 views
how to close lua file call luaL_dofile?
i created tool that generate lua script on each level which contain lot function, and they named based on the object+id format. ex : trigger1(), etc; so every level may have same function name, what i ...
0
votes
1answer
99 views
Calculate future 3D Position of object(Unit)?
I've looked around and almost all examples is see have a velocity vector which I do not have, or at this point am unable to figure out. Im trying to find the 3D position where i can launch a trap in ...
1
vote
0answers
99 views
Scripting language for high complex educational game [closed]
I'm at a stage of working at my C++ game that I need to implement a script language to allow the players to perform tasks inside the game's logic. I'm a sole programmer and thus it's entirely ...
1
vote
1answer
136 views
Handling creation of entities on level creation
I'm currently working on a 2d physics based plat former, kinda in the style of super meat boy. In super meat boy, you have multiple levels and I want a similar sort of thing but is there a general way ...
0
votes
1answer
112 views
NLua - How to implement Roblox like function security?
Roblox uses Normal Identities, basicly they assign a lua block/object to a certain number. They use 2 for Scripts and LocalScripts, which can only use non-secured functions, while the command bar can ...
0
votes
0answers
84 views
How do you use Lua with several game objects / components?
I haven't found a lot of information / tutorials on this subject, so I figured I'd ask here.
I would like to use Lua-Alchemy (the Flash port of Lua) to be able to load scripts and run console-like ...
1
vote
1answer
108 views
Custom 3D Noise function incorrectly generating in Lua
I have been working on a custom noise generator (not Perlin on Simplex or whatever), which works fine in two dimensional space, but upon converting it into three dimensional space, it turns into a ...
2
votes
3answers
128 views
Building a C-E engine in a high level language, how can I integrate optional lower-level components that own overlapping state?
To clarify, by overlapping I do not mean overlapping between said components, but rather, let's say I have:
My entity contains components, and a parent-children system. Call it a mandatory Hierarchy ...
0
votes
0answers
260 views
Touch-detection in cocos2d-x (Lua): Catering for bounding boxes and scale factor
I am trying to write an app in Cocos2d-x with Lua.
I have a sprite that I have added directly to a scene, and now I want to detect touches on the sprite.
Right now, my touch begin function looks as ...
1
vote
1answer
2k views
Run Love2D on iphone and android
I have a game developed in lua using love 2d, and now i want to run it in ios/android.
Is there any porting or way available to do that.
Thanks.
1
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1answer
216 views
Love2d: Failed to load tileset map
I'm reading the Love2D Development book, which i think i will stop reading because is outdated and very instable, sometimes i got a lot of troubles. Backing to the question, i made a tileset map with ...
1
vote
2answers
974 views
How to run multiple Lua scripts within the same lua state without conflict
I've been working with Lua for sometime and there is a problem that I could never solve it. First, I'm using a single lua state to have a connection between my scripts so they could transfer data via ...
0
votes
2answers
137 views
Switching a project written in Lua to a compiled language [closed]
I am experimenting with game development in Lua using the Love2D framework, and while it works fine, I am getting tired of using a dynamic scripting language. I would like to have better performance, ...
5
votes
2answers
454 views
Lua Implementation
I'm struggling to get Lua implemented into my game engine. I've read dozens of blogs and articles revolving around how to wrap C++ classes and I seem to have hit a wall. No matter how I structure the ...
4
votes
1answer
1k views
How can I manage entities(in entity component system) using Lua scripts?
Suppose I have a code like this in C++
// Game.cpp
Entity* hero;
Entity* witch;
... // entity initialization
if(/player near witch/) {
if(hero->get<HealthComponent>()->getHealth() ...
3
votes
1answer
380 views
Make an object follow the mouse pointer with LÖVE2D
I've been trying to make a picture follow the mouse pointer with LÖVE2D.
I want that the object follow the mouse, and not just be the mouse coordinates, I did that. So I toked the distance between ...
0
votes
1answer
103 views
Phone crash when try to use vibration on Android
Im developing an app that when you click a button the phone has to vibrate, the issue is that the phone just chashes. Saing that I need permitions to vibrate. I've already set this permition in the ...
1
vote
2answers
316 views
Smooth moving on tile-based map, how to fix simple collisions?
I've already had some experiences about the work of 2 dimensional square-based playfields and moving a player on them. Though, when a square has multiple pixel sizes, and player moves e.g. 1 pixel per ...
0
votes
1answer
192 views
file:write restarts Corona app
I am attempting to implement an auto-save feature into a mobile game. I have the following code writing to the save file:
function saveFunc(input)
local saveData=input
local file = io.open( ...
2
votes
1answer
1k views
Generating transformation matrix for 2D camera with pan/zoom/rotate
Question
How do you implement a camera with pan/zoom/rotation for a 2d game? Is it acceptable to multiply together a series of transformation matrixes to generate a final transformation matrix that ...
46
votes
6answers
15k views
How does Lua work as a scripting language in games?
I'm a little hazy on what exactly Lua is and how a game that is programmed in C++ would use it. I'm asking primarily about how it is compiled and run.
For instance when you use a program written in ...
1
vote
1answer
139 views
How should I go about protecting my script files?
I am working on a small multiplayer game with a whole bunch of scripting components.
I know I can't store my files in plaintext otherwise anyone would be able to change the functionality of core ...
1
vote
2answers
196 views
Using Lua for configuration and localization data
Since my game is already going to be scripted with Lua, I've decided to make all my configuration and localization data defined using Lua tables. For example, this could be a basic locale file:
-- ...
0
votes
1answer
178 views
How should I organize Lua scripts so that some entities do not have access to functions they shouldn't?
For my game in C++ I'm using different objects (like player, enemy, et cetera) which will have to be controlled by a Lua script. My problem is that if I were to write a function in my player script, ...
0
votes
0answers
45 views
Checking if two lines are crossing [duplicate]
How can I check if two lines (created with function love.graphics.line) are crossing themselves? I may use this ability to create procedural maps via graphs.
1
vote
2answers
387 views
Perlin Noise Help
Okay so I have been trying to make perlin noise, fractal noise to be specific, with mixed success. What I do is I fill 5 arrays with white noise, basically just floating point values. Each array is ...
1
vote
0answers
170 views
Determine required camera pitch/yaw change based on mouse movement and roll?
I'm sure this is going to be a pretty simple answer but I can't quite figure it out on my own. Each frame, I'm getting the mouse's distance from the center of the screen (left/up is positive) and ...
0
votes
1answer
90 views
How do I lock drawn lines to be orthogonal to an existing one?
I'm making a 2D game in Corona for Android/iPhone that is similar to Volfied. In my game, the user has to touch the screen to draw a line for the character to move along. How can I force the lines to ...
1
vote
2answers
432 views
Perlin Noise Variations
Currently I'm making a voxel survival game. About a month ago I embarked on procedurally generating terrain using Perlin noise. I understand how to use and apply it for the most part. However I do not ...
2
votes
1answer
257 views
How to set speed based on screen size
I am making a breakout clone for mobile and was wanting to make the ball speed to be related to the screen size. Larger screen would mean faster speed.
Right now I have it set like so:
...
1
vote
2answers
200 views
Is it possible to develop web-based games using Corona SDK?
Some clients asked me to develop 2D web-based games and later on they might want to release those games on mobile platforms.
I know Corona and I don't want to rewrite my code twice. Is it possible to ...
1
vote
1answer
534 views
How to store generic data in game database?
To clarify things a bit:
I want to create a kind of database for my game, that simply is a class that stores all game-state information like object positions, player scores, etc.
The main problem I ...
1
vote
2answers
267 views
LUA - Keeping track of game state for a digital card trading game
I am building a card game. Let's say it's similar to Magic the Gathering, Hearthstone, etc.
The problem I am trying to figure out is how to architect "auras" and how much damage each card takes.
...
2
votes
2answers
114 views
Breakout intersection logic issues
I'm learning Lua and thought I should try my hand at making a Breakout clone. It is pretty much playable, but there seems to be odd intersection logic at some points, specifically the ball-brick ...
1
vote
0answers
89 views
Overlay scene not showing [closed]
I have 2 scenes: One main scene with a button, and another scene with only 1 text.
button action in Main Scene:
local options =
{
effect = "fade",
time = 400,
params =
{
...
1
vote
1answer
141 views
How to allow other games to communicate with my Lua scripts?
I am planning some small games that will all rely on a single system of Lua scripts to manage some unified data about:
Some achievements that are common to each game.
The player's progress in ...
