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Questions tagged [corona-sdk]

Corona SDK is a cross-platfrom software development kit for both Android and iOS.

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22 views

Facing issues trying to Parse JSON in Lua

Problem statement: Need help trying to load a JSON file into a table array in Lua for Corona SDK development. My Objective: Call specific data from JSON file to my application by using key value ...
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0answers
55 views

Unit testing graphics [duplicate]

What is the standard (if there is one) method which professional games developers use to unit test (or closest equivalent) graphics output? I am developing with Corona SDK and I would like to test ...
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1answer
54 views

How to automate baking pizza in Corona SDK?

I'm writing a game about making pizza in Corona SDK. When you buy chefs, the new chef is supposed to make some pizzas on its own like automation. I tried everything I knew about, I couldn't think of ...
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1answer
159 views

How can I fix this code to spawn multiple types of enemies on the same point with the Corona SdDK?

I have this code to spawn a simple enemy outside the window: ...
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1answer
35 views

How to calculate the magnitude of the drag in Corona-sdk?

I'm making a game on Corona that launches a ball. The force is based on the magnitude of the drag: the larger is the drag -> the higher is the force. I'm having some trouble to do this, because I ...
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2answers
464 views

Calculating Linear force required to hit a specific vertex on a parabola

The idea is a user presses somewhere on the screen and the program will fire an object in a parabola shape from a defined start position that has it's vertex where the user touched the screen. I have ...
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0answers
227 views

How can I clear the screen on Corona SDK

I have objects on the screen that create the main menu, and I want the the screen to clear when I get press the play button. I did it the way the other question on this subject said, but when I ...
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1answer
79 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 ...
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1answer
76 views

How can I move objects on to positions declared by their clicking order?

I'm trying to create a quiz game with clickable letters. How can I move them to another area based on their clicking order? Though you probably already understand what I'm trying to ask, lets clarify:...
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1answer
45 views

Reading filename(image) to a string using corona

Is there a way to get the filename from image and read it to a string using corona? I can't find any help regarding this issue. In example, if I had: ...
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0answers
14 views

Positioning of the game object after scaling the game background [duplicate]

i'm creating a game using Corona SDK i have a map and with ball and some other object moving on this map and i'm using the ultimate config.lua file for scaling background based on device screen ...
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1answer
283 views

moving object on game background after scaling it based on screen size

I am creating a game using Corona SDK, I have a map with a ball and another other object that moves on the map. I use the the ultimate config.lua file for scaling ...
0
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1answer
614 views

How to create soft Icecream like particles with Liquidfun and Corona

Currently using the "elastic" flags for particle behavior, which looks decent when it is flowing downwards but when the icecream collects in cup it is too liquidy. Also this gives it a springy bounce ...
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2answers
349 views

Why does Corona SDK not build a .apk file?

I'm trying to put a game I created in Corona SDK on my Galaxy S5. I go to the Corona Simulator, click Build for Android.. Then I fill out the information, and then I hit build. The problem is, it's ...
2
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2answers
2k views

Corona SDK, display.contentWidth and height does not get the expected values

I'm drawing a simple rectangle to fill the entire screen. local bg=display.newRect(0,0,display.contentWidth,display.contentHeight) Instead of drawing a full ...
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3answers
378 views

Sounds and buttons show up in simulator, not in an Android device [closed]

I'm a noob in android game development, started with corona sdk and outlaw. My project runs just fine with the corona simulator on my win8, however, when building it to my android device (galaxy s3) ...
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1answer
227 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 ...
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3answers
907 views

Is there a tool to batch resize images to nearest power of two, on a specific side? [closed]

For example, i have multiple images with similar properties like width = 66 and height = 62, i would need the resulting image to ...
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1answer
459 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: ...
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1answer
2k views

Moving background animation

How can I create a moving background animation with corona like in this game? https://www.youtube.com/watch?v=dyXxyApKtvM it looks like it uses a single image and stretches it in a loop. I've search ...
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1answer
292 views

How should I start with Android development? I am basically a PHP HTML JAVASCRIPT developer [closed]

I am a PHP developer wanting to learn Android game programming. I tried java with ADT and android SDK, but I found Java confusing because of its complex Object-Oriented structure. I've heard we can ...
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2answers
2k views

How can I clear the entire display in Corona?

How can I clear the entire display? I have tried doing display.remove(obj) and obj:removeSelf() on everything that was drawn, ...
2
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1answer
476 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: ...
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2answers
603 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 ...
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2answers
538 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
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2answers
202 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 ...
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1answer
3k views

How to shoot on direction of touch

I'm new to the Corona SDK(and I also suck in trigonometry) and I'm trying to achieve this: Shoot a bullet from the player, towards the direction of the point the user touched, but always with ethe ...
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3answers
3k views

corona sdk scale images

How to scale images to full screen on all devices, i want to use % The method I've seen so far is to define pixels ...
2
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1answer
313 views

How does one update the physical state of an object after scaling it in Corona?

I am new to Corona and Lua. I have the following question: I have an object cake with these physics parameters (doesn't really matters): ...
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1answer
707 views

How to generate an explosion? [closed]

I'm currently working in an Angry Bird-esque game, where the user flings a bomb at buildings and the bomb explodes. How do I create explosions in Corona? Essentially some sort of area of effect ...
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1answer
297 views

update image properties

Is there a way to update the location of an image? I'm currently calling my image dynamically using: itemImage = display.newImage(inventory[t.ID][1]) t. being ...
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1answer
341 views

What is the current state of 2D game SDK's [closed]

There seem to be so many to choose from. SDL Cocos2D-x Cocos2D-iphone Corona Unity I am having a very hard time looking these over to decide why I want to use one over the other. Advice on what and ...
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1answer
353 views

A specific but basic tutorial for Corona SDK? [closed]

I have been looking at Corona SDK and it would be helpful if I could see a tutorial/example to accomplish the following: Load an image as a background/map Draw a circle on the screen user can tap ...
2
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1answer
1k views

Android performance/issues with Corona SDK?

I know this is a fairly broad question. We are looking to develop a mobile game and want to use a multi-platform engine/SDK. We like what we see with Corona but in doing some reading, we are seeing a ...
2
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1answer
2k views

For a real-time PvP game, what network service would get the job done?

The game is between two players, real time, and has to be very synchronized - latency will certainly favor one player over the other. It's built for iOS and Android and every touch on one end has to ...
2
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3answers
8k views

Isometric 2D game without tiles. Is there a solution?

Is it possible to create an isometric view of the game without the use of tiles? I've already searched in stackoverflow.com and gamedev.stackexchange.com, but I could not find a simple solution for ...
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1answer
557 views

Corona SDK: Animation takes a long time to play after “prepare” step

First off, I'm using the current publicly available build, version 2011.704 I'm building a platformer, and have a character that runs along and jumps when the screen is tapped. While jumping, the ...
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1answer
622 views

what's wrong with this Lua code (creating text inside listener in Corona)

If you double/triple click on the myObject here the text does NOT disappear. Why is this not working when there are multiple events being fired? That is, are there actually multiple "text" objects, ...
2
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2answers
3k views

How do I draw a border around a display object in Corona Lua?

What would be the easiest way to draw a thin border around a rectangle image display object in Corona Lua? This is what I tried: Reviewed API and could not find a "border" method/property on ...
3
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3answers
6k views

How do I move an existing display object behind another in Corona Lua?

If I have two existing display objects in Corona, lets say do1 and do2. Assume do1 is drawn ...
-7
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1answer
428 views

Accelerometer to control handstans man? [closed]

In my game i have to control handstand man using accelerometer. i used this code: ...
1
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1answer
515 views

How to increase force for every touch?

In my game the character can fall in two directions. The user clicks right or left button to "push" the character to balance them, so they don't fall. I'm not sure how to increase the forces applied ...
3
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1answer
287 views

Corona SDK Continuous Integration

Is it possible to build corona applications from console? Or how can I automate build process?
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2answers
6k views

Efficient tile maps in Corona SDK

I need to create a tile map based level system for Corona SDK that loads files created with Tiled [1]. It also needs to support user touch scrolling and zooming. I've searched the Corona forums for ...
3
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5answers
1k views

Do you have to rewrite Corona SDK apps for different devices?

I am using the trial windows edition of Corona, but I want to develop for iOS - the windows version only supports android, so my question is will I have to rewrite any parts of my application for iOS ...
2
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2answers
3k views

physics.addBody() with custom shapes in Corona SDK

Does the physics.addBody() only work with Circles and Rectangles? Or is it possible to physics.addBody() on vector shapes or sprites or with masks or something?
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2answers
1k views

In Corona SDK, how do you extract the x1, y1, x2, and y2 coordinates from a line display object?

I used this command to create a line: local myLine = display.newLine( 0,-110, 27,-35 ) How can I get the coordinates from ...
2
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1answer
690 views

help animating a player in Corona SDK [closed]

Working on a game in the Corona SDK with Lua and I need help so the player animates on the line drawn. Right now he animates at the beggining and the end but not on the line. Here is the player code: ...
2
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1answer
371 views

Is it possible to build an app with Corona with only a PC, and expect it to reasonably run well on an iPhone?

So I understand that Corona allows me to "write once," and deploy on both iPhone and Android. And I understand that I cannot get any iPhone app into the app store without having (at the moment of ...
3
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2answers
789 views

Rotating an object at the user specified speed in corona

I am developing a globe animation, in which the speed of the rotation changes with the length of the user's drag event.The globe when touched and moved attains positive acceleration,reaches maximum ...