ActionScript 3.0 :: Space Invaders Laser Spawning?
May 8, 2009
I am working on making a Space Invaders clone to practice up my AS3. One of the main things in this project is that I want to make all of the graphics through Actionscript, simply because I have never worked with any sort of object in Flash that way. It's been an interesting challenge so far but I keep getting stumped on firing lasers. From what I can tell I have it semi-working, but when I press Space to fire I get this error:ode:TypeError: Error #1009: Cannot access a property or method of a null object reference.at Laser$iinit()at Ship/::movePlayer()Here are my as files nudge in the right direction. Laser.as:
I am making a space invader game as a uni project. Please seee attched file.I am getting an error:TypeError: Error #1009: Cannot access a property or method of a null object reference. at MethodInfo-19()It only happens sometimes when an invader is removed in the moveBullet method I think but basically the game behaves incorrectly and sometimes goes to the You Win frame even if the user has lost or just lost a life.
how to make a Space Invaders game (with a twist). I have previously made a game in Actionscript 1.0, which may be viewed at [URL] (press S to start the game after typing in your name).
I want to use this project as an exercise for learning AS 3.0, and I a cannot really see how I need to use separate AS files (Actionscript classes)
I've been following a tutorial on [URL] but changing and removing various things to fit to the game I am (very, very slowly) trying to make. I am attempting to make an up-side-down Space Invaders like game, but with balloons instead of aliens.
So far (by following the tutorials and being lucky) I have managed to make the player's ship which moves by pressing the arrow keys and can shoot two (blue) lasers when the spacebar is pressed. The enemy balloons randomly appear below the bottom of the screen and shoot a laser upwards towards the player's ship when the player goes above (Y axis I think) any balloons.
The problem is that the balloons fire a massive stream of shots (red lasers), but I want to delay each next shot by a few seconds, but the time of the delay doesn't matter because I'll tweak it later.
I've been trying to make delays for the balloon lasers by copy/pasting bits of code from Ship.as in an attempt to make it work ...Maybe it's a good time to say I am a complete noob at AS3 apart from when it comes to messing up and having no idea what is going on
I've attached my current (broken) work and a working SWF of before trying to add delays to the balloons shots. If you want to see it working first hand then replace the Balloon.as in actionscript.game with the Balloon(working).as and change the filename to Balloon.as.
how i can get these lasers to work in the correct manner. For some reason, 2-3 seconds in the game, the game goes to the next frame. I can't get the second player's fire to stick with him as he travels across the screen. Here's the fla.
I'm making a top-down shooter game.I have keyboard input that moves the ship around and fires a laser. everything works perfect except that when the ship moves diagonal up left, or diagonal down right, the laser can't fire at the same time. It will work in any other direction, including the other diagonals.here is my code:
[AS] function captureKeys() { if (Key.isDown(Key.RIGHT) && ship.x < 355 ) { ship.x+=ship.right[code].....
i'm trying to achieve an effect in which a triangle movieclip (which expands and then dissolves) respawns itself continuously. I'm hoping to figure out how to tell flash to respawn a new instance of the 15-frame movieclip of the triangle, when the original clip hits frame 5. the next one would do the same, and so on and so forth.My research so far has led me to believe this has something to do with the 'addChild' function but i'm so far unsure of what to do with it
I have made a preloader, and to make the bar appear earlier during the loading process, I made every movie clip except the preloader files have "Export in first frame unchecked." Since I did this, my game doesn't run the movie clips anymore. I had enemy units come across the screen randomly, and now nothing appears at all.
im making a script where it spwans enemies when the enemy count is lower then or equal to the CurrentEnemys. but it spawns like 200 enemys and says the function is looping and my CurretEnemys trace says NaN..
Hers the script.
enemyCount = 0; CurrentEnemys = 5; function startwave(){
I am writing an application at the moment, and am wondering whether it is possible to be able to click on an swf link, but that it spawns up a flash player window to run the swf, and not try running it in internet explorer.
I know I can create a projector, but with most peoples firewalls, this wont allow the exe file to grab the xml files that I am using from my website.
So how can I make Flash player run my app outside of internet explorer, without having to download it first?
I know how to make a basic jigsaw but at the moment i'm trying to create a map of europe jigsaw. Unfortunately with the map taking up the majority of the room there's no space to have all the pieces on screen at once. I had a look for solutions and i found this... [URL] How would i go about making it so that only 1 piece appears on screen until you have placed it?
where each of my buttons have a dynamic text label.
So this button is a symbol, and the instances are named let say btn1, btn2, btn3. The label tag name inside the symbol is btnName.
How I can make this work if I define my array on top level? How I can make sure that the label btnName will have the correct array name for each btn instances?
Here is my code: function createEnemy(event:TimerEvent):void { var enemyAppear = new MovieClip; enemyAppear = new Enemy(); enemyAppear.x = Math.random()*stage.stageWidth; enemyAppear.y = 285; [Code] .....
What I am trying to do is spawn a enemy to stage and when it appears on the stage I would like it to move across the stage a certain distance. Visual Example: O = enemy, X = original position, Y = new position O (Spawns @ Location X) X ---------------------------------------------------------> Y ( Moved from location X to Location Y)
what happens is I have a key, a door and a health bar and an enemy. the enemy takes off some of my health...I pick up the key and it disapears and is added to my inventory. I then us it to open door then my character can move off the screen to the next frame where there is a castle., but my health bar is full again. when I go back into the previous frame the key is back, the door is closed and I cant pass through it again until I pick up the key.
the only way I have found around this is to make sure the objects are in every frame but that only solves a few problems. one of the problems is my health bar always re-plenishes no matter what when going from frame to frame. and I still cant pass thru the door even though its open.
i'm creating an application using AS3.0 and class files. in this application i have a MovieClip in the library i'm using that contains several symbols and configurable textfields and have already defined the functionality for these symbols. my question is, if i'm creating an application and through actionscript and i'm spawning instances of a symbol, do i have to define the functionality and initialize this symbol in the main application class?
specifics: i'm creating a panorama app with markers that are papervision3d planes. they use a movieClip texture that i've created and i want to configure textfields and display pictures that describe the info in the marker. i created a panoApp.as class file that configures the panorama. but i also have a marker.as class that defines the symbol's behavior. this movieclip has symbols in it it's stage that i've defined (ie: name_textfield, description_textfield, etc..) when i compile the project, the compiler errors saying that the variables/identified internal symbols are missing.
I made a ball that moves and when it hits a border it bounces back.I want to make it so that a new ball will spawn every few seconds and does the same as the first ball. So i tried making it with an Array, not sure if it's the best way to do it, because it didn't work out as i wanted The ball's instance name is mcBall, if you need it.
I want to create a piece of flash where it starts off in space and shows the earth and then after about 5 or 7 seconds it zooms into the earth and into the UK.
I have 10 MovieClips that all have a 25px width. And I need to them to fit within a space that is 305px in width. How would I find the space between each MovieClip so they will all fit evenly within the 305px of space?
I have been working with htmlText and everything is loading and appears fine with one minor exception. For some reason there is no space between paragraphs defined by the <p> tag. There will be a line break, but not the extra space between the paragraphs.
All i am looking for is to draw a line from point 1 x, y z, to point2 x y z Since this was CS 4 and z properties are enabled, i wonder how i could do this for a line.
I'm using Flash CS4 and AS3 and trying to get this cube to look as though it's actually in 3D space. [URL]. I know that because it's really two dimensional I'm dealing with the panels being on set layers and I need them to dynamically figure out what panel should be brought to the front. I don't really even know how to tackle this... Is there code I can use to get it to constantly check what should be on top? How would it even test this?
create a random name selector for the classroom. It works great but it doesn't like a space between two words. So I can't copy and paste a list with name and surname. It comes out with nonsense characters in the space.frame 1
stop(); var name = new Array(); var colour = new Array();
I'm trying to get used to the new way of doing things in CS4. Once I've created a MC and rotated it in 3D, how can I move it across the screen w/o rotating it further? I have a MC that rotates over several frames, and once it reaches the last one, I want it to stop rotating, then begin to slide in an X direction (while reducing the alpha). But no matter which tool I use or what I do on the timeline, the object is stuck in place and will only rotate and not move. Even the 2D X and Y settings in the properties panel are grayed out.
I have a web design for a client that was pretty much complete. They decided that they wanted to replace one of the graphics with a flash animation. When I added the swf file to the layout in Dreamweaver it apparently is adding some space around the swf which breaks the rest of the design. It looks to be about 4 pixels or so of space that is getting added. I experimented with padding, margins, borders on every element in the design. I tried changing the Scale parameter of the swf to "no border" and "exact fit". I tried enclosing the elements in a table. To simplify things I created a new blank page in Dreamweaver and added the two elements that are giving me grief. The original width of the design was 792.
On the top I had 2 graphics, the first was 212 wide and the second was 580 wide. The first graphic is the one that got replaced with the swf file. The swf is also 212 wide. But for some reason there is that extra space on the right side of the swf that forces the second graphic to the next line. You can see the example here: [URL]. This shows what happens when the original graphic was replaced with the swf. (The swf doesn't do anything as I actually replaced the client's swf with one I made that has the original graphic as the only item in the movie). If you look here: [URL]. I changed the width of the second graphic to 574 wide. That kept the graphic on the same line, but you can clearly see that the swf has the unwanted space to the right.
I am trying to delete some copy but when I do it, it leaves a huge black space (previewed in Firefox and Safari on Mac) which is the space left when I deleted the script and I don't know how to close up the black space (like I would do in indesign or Word). I am doing something wrong but I don't know how to fix this simple thing.
URL...The problem is with the flash banner at the top. It was created with a utility for creating banners and displays in firefox without any problems. In IE 8 there is white space to the right and I cannot get rid of it anyhow.
I use cs4 flash 9 I use a css stylesheet I set margins with it and they work fine. I read that leading is supported byt when I try it it doesn't work. Could someone show ne a simple stylesheet that implements leading?
How to center your work space? For some reason flash keeps putting my work canvas at the upper left corner. I can use the hand tool to move the window but it's not the same as if it were actual centered. Is there a way to place it back there?
When insert an image into TLF in flex3, I found that image in TLF is displayed in a square area. so there is some space at the top of the image. See the attached image for this problem. How to remove this space? I try the following method, But it doesn't work!
