The title is self-explanatory... Apparently the problem is in the flush method of the SpriteBatch class on the line where it says lastTexture.bind();. I did some surfing and found out it maybe because the sprite doesn't have a texture. So I ran some tests with if-statements and I literally wrote -
if(sprite.getTexture() != null) {
sb.draw(sprite, ...);
}
And it still went to the draw line and then threw this error! Any help would be appreciated...
I found out what was wrong. The problem was actually with my box textures which I was rendering before the player. Since they were stored in the lastTexture variable in my SpriteBatch while rendering the player, I got mislead and was trying to debug the wrong code. Hope this helps if anyone else faces the same problem!
Related
SOLVED: It was a two stop functions. Two. Stop. Functions. AS3 can be so annoying sometimes.
I am making a space invaders style game for a school assignment. I was adding in a button to go between frames and I deleted an unnecessary layer that contained a single sprite in my game, which I added back onto the main code layer. Then after attempting to restart my game to check the button, I began receiving a TypeError Code 1009. It is stating that there is an error with MainTimeline/moveBullet() and, MainTimeline/eFrame(). These sections of the code were not altered whatsoever during the creation of the button or movement of the sprite, however, as the bullet is linked to the moving sprite I think the error may be there. I'll put the code below, if anyone knows how to fix this specifically or has a general idea of how to do so please let me know. This is due in a few hours and would greatly appreciate a quick fix. Thanks.
Re-named sprites, re-typed code sections returning errors again. Most fixes appear to be in instance names, corrected them and no fix.
this.addEventListener(Event.ENTER_FRAME, eFrame)
function eFrame(e: Event) {
controls();
restrain();
moveBullet();
enemyHit();
barrierHit();
function moveBullet() {
if (bull.visible == true) {
bull.y -= bulletspeed;
if (bull.y < 0) {
bull.visible = false;
}
}
}
The game had been running fine until this point. The character would move along bottom and shoot up at "bad guys". Bullets were removing bad guys. Now I get the usual super fast run through frames repeatedly. NO Compiler Errors, just output, being
TypeError: Error #1009
"I deleted an unnecessary layer that contained a single sprite in my game, which I added back onto the main code layer. Then after attempting to restart my game to check the button, I began receiving a TypeError Code 1009."
Possible solutions:
(1)
Did you also give the Sprite an instance name? I suspect the name bull is what's expected.
(2)
Eliminate that the problem is in moveBullet(). Disable the call and if the error still exists, then the problem must be between variables bull and bulletspeed.
Comment the call movebullet() in function eFrame:
function eFrame(e: Event)
{
//moveBullet();
....
I'm trying to get cells from a tile layer in libgdx (for a tiled map). A lot of examples I see say to cast a layer to TiledMapTileLayer, but this doesn't work.
TiledMap tiledMap = new TmxMapLoader().load("start.tmx");
TiledMapTileLayer obsLayer = (TileMapTileLayer) tiledMap.getLayers().get("obs");
I get this exception:
Exception in thread "LWJGL Application" java.lang.ClassCastException: com.badlogic.gdx.maps.MapLayer cannot be cast to com.badlogic.gdx.maps.tiled.TiledMapTileLayer
at net.myname.mygame.Game.create(Game.java:66)
at com.badlogic.gdx.backends.lwjgl.LwjglApplication.mainLoop(LwjglApplication.java:149)
at com.badlogic.gdx.backends.lwjgl.LwjglApplication$1.run(LwjglApplication.java:126)
My guess is the library was updated to work differently, but I don't see any examples doing things in a new way. Anyone know what to do?
I'm using libgdx 1.9.9
Oh wait, I guess my map got reverted accidentally. Was using a object layer before but changed it to a tile layer. Changing to a tile layer instead of an object layer makes it work.
Thanks partly to info from people here, I'm getting more comfortable with Actionscript 3, but I've got a problem that is very puzzling.
The program (done entirely in AS3, no Flash) has several different screens. One does music and it's working very well. Another does video. Obviously when somebody goes from music to video we need to make sure the music is turned off. There is a Main screen that handles going from one to the other.
I started out doing it this way, and the reason I got "Call to a possibly undefined method" is obvious. The following is in the Main class, with the "private var" part inside the class but external to the functions and the "music = new MusicPanel" part in one of the functions:
private var music:MusicPanel;
music = new MusicPanel(trackNames.songNames, trackNames.numSongs);
When switching to the video panel, I added a public function in MusicPanel called StopMusic and called it when the user went to the video panel:
if(music != null)
music.StopMusic();
That got the error:
Call to a possibly undefined method StopMusic
I was checking to make sure music was not null, but that error didn't seem like a bad thing. So I changed the code to:
private var music:MusicPanel = new MusicPanel();
and added a function that would get the song names and number of songs to the music class. That did not help- I got the same error, and in fact the function that tried to put the song names and number of songs got the error also.
At the same time, the Video panel does not give me that error, even though I have laid it out in exactly the same way.
private var video:VideoPanel = new VideoPanel;
video.PlayVideo();
I do a fair amount of setup on the music screen when it gets called as a new class, I do less setup for the video screen. I'm not sure if that makes a difference.
Clearly there is something I don't understand here. Anybody got any idea what's going on? I've looked at a number of questions about this, but have not found an answer. I think I'm doing this right, but the compiler thinks I'm doing it wrong, so I must be doing it wrong.
Later Note: One answer mentioned the difference between Sprite and MovieClip. I gave that a try, changing to MovieClip does not help, and the VideoPanel, which works, extends Sprite.
What is the base class of MusicPanel, Sprite or MovieClip? If Sprite, change to MovieClip and see what that does. In AS3 Sprites are not dynamic, so can't take properties that are not inherent in the class.
It appears that the problem is coming either from Actionscript 3 or from FlashDevelop. I built a new module (SongsPanel) which is very close to the same as the original MusicPanel. It works. If I add a public function in MusicPanel the compiler comes back with the same error. If I add a public function in SongsPanel everything works.
Does FlashDevelop keep track of errors in some hidden file? I'm guessing that's what's going on, and that there is a bug in the way that is done.
PITA!- but at least it now works.
Hi Im relatively new to flash developing and i have a quick question about saving user input. I have a maze scene whereby the user navagates a character around until confronted with another object, when the character hits the object a new scene is opened promting the user to pick a solution to a problem. Once the user clicks the correct answer a box appears saying return to the maze, however when clicked and returned to the maze the character starts back in its original postion, where as I would like the scene to resume where it left off, ie the character is at the point where it collided with the object, the object has dissappeared and the character can resume on the same course.
Thanks for giving this a read I hope it makes sense and some one has a solution for me.
I did have some nice images to explain it better but apprently i need 10 reputation points to upload those.
EDIT: First Id like to say thanks for the rep points you bunch of stars and secondly I know using scenes in flash is seriously cr*p practice and outdated but its the way I learnt all those years ago and seen as Flash itself will be outdated soon Im not really looking to learn another approach using sprites or frames, I just kind of want a fix for this way if poss thank you for answering!
EDIT: Wanting the red rectangle to be removed from the scene once the black square collides with it. It also takes you to the next frame upon doing so. here is my code.
addEventListener(Event.ENTER_FRAME, fl_EnterFrameHandler);
function fl_EnterFrameHandler (event:Event):void
{
if (player.hitTestObject(Risk))
{
removeEventListener(Event.ENTER_FRAME, fl_EnterFrameHandler);
removeChild(Risk);
nextFrame();
}
}
I'd suggest you forget about Scenes! They are old, buggy, bring loads of issues with code and are generally a Bad Pratice!! So if you are just learning AS3, dont learn with Scenes!!
Use MovieClips or Sprites instead. And just add and remove them as you need!
EDIT:
To ur edit ;)
and seen as Flash itself will be outdated soon
thats just plain false and a widespread misinformation. It just has a new purpose like MultiPlattform Game Development. But thats a whole different discussion.
You could solve this by saving the x,y coordinates and then restoring them. But i promise you, you will run in to alot more problems/bugs as you go allong!
Like saved Points and Time. Will you triger the Questionscene again when u place the player on the object(last Position). Save the answers, and so on ...
Changing to DisplayObjects will save you time in the end. Just saying ;)
EDIT2:
your code in the comment should look like this:
function fl_EnterFrameHandler (event:Event):void
{
if (player.hitTestObject(Risk))
{
removeEventListener(Event.ENTER_FRAME, fl_EnterFrameHandler);//remove to prevent errors if it fires again and there is no Object to hitTest
removeChild(Risk);// do what needs to be done on this frame
nextFrame();// and then move to the next
}
}
And following correct convetions and make everybody's life easier reading this, it would look like this!
function fl_EnterFrameHandler (event:Event):void
{
if (player.hitTestObject(risk))
{
removeEventListener(Event.ENTER_FRAME, fl_EnterFrameHandler);//remove to prevent errors if it fires again and there is no Onject to hitTest
removeChild (risk);
nextFrame ();
}
}
i'm probaly confusing u now, just use the top one ;)
EDIT3:
Ok, i just had a butchers at it. It's all on a single Frame now. I would have prefered Classes but that'lljust confuse you.
To add new qestions you just have to dublicate the Question MovieClip in the Library and change texts, leave instance names the same tho, then the code will work as is!
DOWLOAD
It is certainly possible. You would store the characters attributes (e.g. current position) within a variable. Then on returning to your game you would use this variable to set the starting position of your character.
I agree that scenes are not the ideal route you should be taking. Possibly reading a good AS3 book would save you hours/days/weeks in the long run.
I'm a AS3 developer but I'm not sure how can I trace this kind of messages in firebug as an info messsages.
I know that for an error I just need to inherit for an error but I'm not sure how can I trace this kind of messages.
This code:
trace("Hola")
will show "Hola" in Firebug, but I want the fancy Info icon at the beginning also the background of the line is blue.
Thanks for your help.
you can try https://addons.mozilla.org/en-US/firefox/addon/flashbug/
years ago I've used http://www.sephiroth.it/firefox/flashtracer/ not sure if anyone uses it still.
The trick is to use Debug version of flash player
In the case where you don't want to install the Flash Debug player (performance?), rather than using trace, route it to a Debug method that traces and logs to the console:
import flash.external.ExternalInterface;
var debug:Boolean = true;
function log(msg:String):void {
if ( debug ) {
trace(msg);
ExternalInterface.call('console.log',msg);
}
}
log('Hello World');
You should be able to throw that in a frame. If you're using class definitions, you'll have to interpret that code block as snippets.
Also note that in a browser that doesn't have console.log (like IE7) this will throw an error, so maybe you should test for console.log first and store the result in a global.
Notice the debug variable. When you want to turn debug logging off, just set debug to false. This is an overly simplified idea, but provides the basic concept.
Another way enhance this concept is to include a debug "window" if you will... really just a scrollable text box on top of everything else. This is helpful when dealing with devices that do not support logging, debug versions of flash or are just difficult to debug, e.g. mobile and AIR.