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.
View 1 Replieshow 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.
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:
Code:
package {
import flash.display.Sprite;
[code].....
My project is almost complete except for this last little thing that's been bugging me. A tutorial I followed had you start the game by clicking a button but I would like to change that to pressing the spacebar starts the game. I tried:
if(Key.isDown)(Key.SPACE))
{
_root.ship.newGame();
}
[Code].....
I am currently working on a new game and I need help on this part. It is probably simple to do but I am a noob. Basically I am making a window cleaning game and I have set it up so that the dirt slowly dissapears through the frames. What I need to know is how to I script it so that each time I press space it jumps to each frame.
e.g hit space jump to frame 2 press again jumps to next frame.I know How to set up the key press and know space is 32..
trying to color objects that are flying around in my space game.When I shoot and hit them - the affected enemies shall blink. The graphics are pre-rendered (i.e. there's an rotation array and function where the degrees and their appropriate rotation for the objects are stored / calculated for better performance).
So - my idea was to enhance that rotation function with a functionality for additional coloring; but the colored AND rotated objects shall be stored apart of the normal rotated objects. To accomplish this I made a nested array:in row one there are 360 rotated graphics of one object and in row two there are 360 graphics of a rotated and colored object.
Problem: Coloring works but they are not rotated (always at 0 degrees).
Code:
public function createRotationWithColorBlitArrayFromBD(sourceBitmapData:BitmapData, inc:int, offset:int = 0):Array
{
trace("sourceBitmapData.width=" + sourceBitmapData.width);
[code]....
I tried to do a space game But there is a big big big problem I couldn't remove the movieclip (bomb)Here is the fla CAN YOU HELP ME?
can you remove the "fuse" for me
I am making my first game and it's my first time using actionscript. I am making a sniper game themed with the L96A1 sniper rifle from COD: Black Ops and the map nuketown. I'm in cs5 with ac3 and on my stage I have two movie clips that I'm working with. I'm not really sure if they're supposed to be movie clips though. Anyways, one is the gun, and the other is the zoomed in scope overlay thingy.
For now, I'm trying get the zooming in to work. I haven't done anything else though except collect graphics for enemies, the landscape, the gun, and the scope. I want to make it so that you zoom in and out by holding and letting go of the space bar. Also,I want to make it so that when you are not zoomed in, the gun moves horizontally at the bottom of the screen (aligned vertically with the cursor). And when you are zoomed in, the scope crosshair is the cursor.So my idea was to set the gun as the cursor and make it only move horizontally at the bottom of the stage and then make an event listener that listens to when the spacebar is pressed and when it is, disables the gun as the cursor (and makes it transparent to get it off the screen) and makes the scope the cursor [was transparent, now opaque and unrestricted(vertical movement also)].
I got as far as making the gun move horizontally at the bottom with the cursor. I cant get the event listener working because I don't really know how to go about changing the opacity of each movie clip and how to switch cursors. So I am asking how do I change the opacity and switch the cursors when the spacebar is held and then reverse those changes when the spacebar is released? Here's my code on an "actions" layer [I haven't done any animations yet, so everything is on frame 1. Also, I used a couple preset code snippets since I have no previous experience with actionscript (I can understand most of it though)]:
Code:
import flash.events.KeyboardEvent;
// make gun cursor
stage.addChild(gun);[code]..........
Here's a link to a zip archive with all the files used so far (I hope this google docs link works): link
I was trying to make a game with simple spaceships and a bullet that is supposed to hit them and delete them on screen. As all ships are deleted the level gets up by one, increasing number of ships to delete. I think the collision detection part of my program works fine, but their is some problem in their motion synchronization.
Code:
package {
import flash.display.Sprite;
import flash.events.Event;
import flash.events.MouseEvent;
public class HitGame extends Sprite {
[Code] .....
The problem is: when the game starts, "SPACE BAR" is working fine and changes the game from day to night. When the game ends and I press restart, the SPACE key is not working. On the third time it works, on the fourth not and it follows that way. Every second time that I play the game, the SPACE key doesn't work.
The game initializes the player and sends him as a parameter a stage object and the player listens for KEY_UP.When I press restart, the game runs the init() function again.Below there are the Game.as and Player.as classes.
Code:
package
{
import com.greensock.TweenLite;[code].....
I am in the process of creating a vertical scrolling space shooter game for deployment on mobile platforms using AIR.I've used some excellent tutorials online, video tutorials on Lynda and several books, including Game Programming University.Something they all seem to gloss over are the various screens that will be used.
For instance, my game right now will use a splash screen, a main menu screen, a credits screen,a settings screen, a difficulties screen, an instruction screen, an end game screen and save/load screen...and a play game screen, where the actual game will be played.I've created the screens as seperate frames in the main timeline with stop commands in between and code on each page (I know... bad!... but easy).So basically,they can navigate through the menus using buttons (mouseclicks, which will work with touchs as well) and when they are How do I pass data between them? I was thinking of storing it in shared object.
I'm using AS2 and fps120.I'm creating a tetris game, but I encountered a problem: I made a function which makes the block go directly to the bottom on the press of "space".I used
if(Key.isDown(Key.SPACE)){
...
}
But when I pressed space, the blocks stacked up immediately. It's because after I press space, another block apears immediately and goes to the bottom immediately, and keeps going until I release spade. It isn't a problem if I use lower fps, but my fps is 120, which means even I release space as quickly as I could, at least six blocks would stack up. I want to know is there anyway to detect the releasing of "space" or a detection which only detects on the instant I press, instead of when the key is down.
I am going to develop a very simple game for android and for iphone/ipad I have the option to develop it in cocos2d or in adobe flash air (i am not a developer, but i have 2 developers who are offering me the service)I have a developer that states that cocos2d is better and other one that states that adobe flash air.I want it in cross platform.the cost offered by both developers is the same..i have heard that adobe air has the flaw that it is very slow, is this real? if you had the 2 options which will you use to develop your game and why?
View 1 RepliesI'm making a game that populates user-designed cards into the game using an external xml file. My main class loads the xml file and then calls to the "Card" class, which wants to use the xml file. I've tried using this.parent and it just gives me a null object reference error. This is what I have so far: Main.as
[Code]...
currently i making this game and objects would spawn at random and be able to click but when de game starts itself, the spawn is correct but i am unable to make it stop when time goes to 0seconds.
View 1 RepliesI'm creating a game at the moment for my university course and it involves the player character jumping on top of boxs twice to break them as opposed to just once.What would be the most efficient/simple way of writing this in Actionscript 3.
View 1 RepliesI have recently started working with Mahjong game. But being not so experienced developer. I am just confuse about many aspects of it. So if anyone could throw some light on it. I have to build the game where there could be different number of tiles on screen. 32, 48, 64 , 80, 96, 112 and so on Now I have questions regarding the levels of blocks in this game. I mean the layouts of the game should be predefined or they should be dynamically created? Also I wanted to know how the surface of enable and disable symbols are created?
View 2 RepliesI was trying to make a game, and the character inside the game could swim. However, I only wanted him to swim in short bursts that refueled every time he hit the ground.
View 9 Repliesim trying hard to make a Game like the Pokemon TCG .
View 2 RepliesI think Flash/Flex is a good aproach for this case.We need to build some like the following
View 2 RepliesI am thinking of developing of a game like this: [URL]... Do you have any idea - by which game engine I may develop this type of games? I am not sure whether I have to use any 3d physics engine? I think JiglibFlash may be useful, but I am not sure.
View 1 Replieshow to make a game tutorial as farmville game tutorial to teach the user to play the game. i have recently involve in make that kind of game tutorial for its user by actionscript 3
View 1 Repliesim trying to create a tamagotchi game type game. For some reason i can not add any items to the stage.Currently i have imported 2 png images to the stage and coverted them to movie clips. One is called TamagotchiCharacter and the other is called Beer. I have also created a new 2 AS3.0 script class called TamagotchiGame and DraggableItem. The following is TamagotchiGame:
Code:
package {
import flash.display.MovieClip;
public class TamagotchiGame extends MovieClip {
[code]....
I have assigned the above code as the BaseClass of the Beer symbol, this has allowed the beer to become draggable and droppable etc.when i run the program nothing happens, i just get a blank white screen.
It's about the "Game Character Dialogues", It is used to instruct the user what to do, like what you see in BookWorm or Diner DAsh.I used dynamic text fields to generate these dialogues,but as I continued doing it. I found myself stuck.I have no idea on how to change the words when the "next" button is clicked. there will be no previous button. but the dialogue will replay when the character is clicked.
View 3 RepliesIs there a way to get this code to work? It's meant to count the seconds passed while playing the game and gives a bonus multiplier to the current score when the game ends. I don't know how to get the returned value to combine it into the multiplier int variable. Is there any way to get this code to work or is it completely wrong?
View 11 RepliesWe have a bug in one game whereby the sound of the word repeats. Even when we use stopAllSounds - the sound is still kept in memory and you can hear it in the next activity - it's a disaster and kids get real angry.
View 3 RepliesI am making a Shooting game in flash actionscript 3 and have some questions about the flow of logic and how to smartly use the OOPs concepts.There are mainly 3 classes:Main Class: Initializes the objects on the screen.Enemy Class: For moving the enemies around on the screen.Bullet Class: For shooting.What I want to do is find out if the Enemy has been hit by a bullet and do things which must be done as a result ...What I am doing right now is that I have a ENTER_FRAME event in which i check collision detection of each enemy unit (saved in an array) with the bullet instance created, and if it collides then perform all the necessary actions in the Main class .. clogging the Main class in the process
View 2 Replieswell i made a game and in the game there is music at the first frame and when u lose to goes back to first fram and more music plays so they are overlapping.
View 10 Repliesim creating a card game. i have a seperate timeline for the menu bar. ive placed this code on the first cell of the timeline:
Code:
import mx.controls.Menu;
import mx.controls.MenuBar;[code].....
the problem i get is that when the user selects "new game" it should restart the game. when it does this the toolbar is not reset. instead a new menu item is added (without removing the old one. so evertime the user hits new game, a new "file" menu is added). how do i make sure there is only 1 "File" menu? and im using actionscript 2