I'm making a flash game for practice and I have my stage set up so there are 9 boxes. When the game is started, one of the boxes is randomized as the one with the start underneath, if you pick the box with the star underneath, you win.
The randomizing code is
var star = 1 + Math.Round(Math.Random()*8.0)//generate a number between 1 and 9
What i dont know is how to attach this code so that it assigns the star to one of my 9 boxes made as buttons. How can I hide the star underneath the box as a cover.
Thanks for your time
I'm picturing one of those games where you but a ball under one of three cups and swap the cups, then guess which one has the ball.
The simplest way to hide one object under another is to just add it to the stage before the object covering it. So add your star to the stage, then add all your boxes. BUT since you don't have to have an unseen object actually be on the stage, I recommend not adding the star to the stage until it is revealed, and remove it when it gets hidden again.
You can create layers to make sure objects are always above/below what they need to be above/below. Create sprite objects, and call them layers. Add them in order from bottom to top. Add other sprites to these layer sprites to control their display order.
var layer1:Sprite = new Sprite(); // Bottom / background
var layer2:Sprite = new Sprite(); // Top / foreground
stage.addChild(layer1);
stage.addChild(layer2);
layer2.addChild(someObject1);
layer1.addChild(someObject2); // someObject2 will be below someObject1
That deals with covering the star with the boxes.
You can put your boxes in an array. You'll want a number between 0 and 8, then just use that as the index in the array to get the box you want.
var whichBox:int = (int)(Math.random() * 9);
var boxesArray:Array = new Array();
for (var i:int = 0; i < 9; i++) {
boxesArray.push(new Box()); // Or whatever your boxes are
}
var boxWithStar:Box = boxesArray[whichBox];
You can then move the star to the same location as its box...
star.x = boxWithStar.x;
star.y = boxWithStar.y;
This is a pretty handy function you can use:
function randRange(start:Number, end:Number) : Number
{
return Math.floor(start +(Math.random() * (end - start)));
}
example (any number between 0 - 9) :
var random:int = randRange(0,9);
remember to make it an int or you may end up with a float.
Related
Found this topic: AS3 setChildIndex to front I'm trying to accomplish the exact opposite.
"addChildAt" doesn't work for me when I'm setting the container behind everything else or something along the lines. And as for stars themselves, I can't send them back anymore than layer 0 for some odd reason (it'll give me error 2006, stating "The supplied index is out of bounds"). Here's the code:
starsSpawn function:
var starContainer:MovieClip = new MovieClip();
addChildAt(starContainer, 20);
starContainer code:
function starsSpawn()
{
for(var i:int= 0; i < 30; i++)
{
var newStar = new starCode();
var scaleXY = Math.random()*(2)+0.1;
newStar.width = scaleXY;
newStar.height = scaleXY;
var positionX:Number = Math.random()*(stage.stageWidth + (1* newStar.width));
var randomY:Number = Math.random()*(stage.stageHeight - newStar.height);
newStar.x = positionX;
newStar.y = randomY;
starContainer.addChild(newStar);
}
}
Essentially how it works is that a container is set up and the for loop creates 30 stars, each with the outlined code.
When you addChildAt(myChildMC, 0); it gets added at index 0 and everything else gets bumped up. Z order indexes in AS3 are contiguous, meaning every space from zero to the highest z order must be filled. If I remove whatever is on layer 4, layer 5 will slide down to fill, and so on
And I don't think you can add something to index 20 unless all the other indexes have children in them. That may be what is causing your particular error. To add something to the top level just do addChild(myChild).
edit
Since it sounds like you have the concept of how z-order works in reverse in your mind, you probably are wanting to have the stars "in front" of everything else i.e. Always on top i.e. Always visible. To do that just do addChild(starsContainer) after all the other containers are added or Sprites or MovieClips. If you add something to the stage at runtime, just add the stars container again (this won't create a second container, it literally just changes the z-order if there is already a container by that name... this is an often misunderstood point).
Hey everyone so having a little trouble trying to accomplish this. I understand how to add lives and display them through a Dynamic Text Field on the stage. My game is set up right now to where this happens and whenever the player dies a live decrements so it works fine.
But I want to display and Image of all 3 lives a custom Movie Clip that I drew in Flash CS6 to represent the lives. So All 3 lives will be displayed in the game and once the player dies one of the lives images is removed.
I have some idea on what to do. For instance I created a "for loop" to display all 3 images on the screen and created variables to place them horizontally next to each other with a space of 30 pixels.
But I'm not sure if this is the correct way to approach this. Also kind of confused on how I would remove one of the images when the player dies?
Her is my code so far:
public var playerLives:mcPlayerLives;
private var nLives:Number = 3;
private var startPoint:Point;
private var aPlayerLivesArray:Array;
In my main class Engine:
aPlayerLivesArray = new Array;
addPlayerLivesToStage();
Then the addplayerlivestostage function:
public function addPlayerLivesToStage():void
{
var startPoint:Point = new Point((stage.stageWidth / 2) - 300, (stage.stageHeight / 2) - 200);
var xSpacing:Number = 30;
for (var i = 0; i < nLives; i++)
{
trace(aPlayerLivesArray.length);
playerLives = new mcPlayerLives();
stage.addChild(playerLives);
playerLives.x = startPoint.x + (xSpacing * i);
playerLives.y = startPoint.y;
aPlayerLivesArray.push(playerLives);
}
}
So like i stated above everything works fine and it does display the 3 images that represent the lives, but would this be the correct approach or is there an easier method?
i think you're using right way to add lives.
and for removing them, you don't need to remove all and add new lives, you can remove the last element of lives array, so, it's done, i think thats already an easy method
so, you can implement this
for (var i = 0; i < nLives; i++)
to make a better usage for "adding lives in-game (earning lives)"
something like
for (var i = aPlayerLivesArray.length; i < nLives; i++)
but don't forget to decrease array length by 1 after removing last element of livesArray when player dies
Looks pretty close to a reasonable approach. I would have a blank container movieclip on stage where you want the lives icons to display. Create one life icon in your library and link it for export with actionscript. When you generate your game view, you can populate this container with the starting value of three lives. Place the first one, then place the subsequent ones based on the first location.
Some untested code:
NOTE: The following presumes your container clip for the lives is named lives_container and your link instance name for the life icon in the library is Life_icon.
var numberOfLives:Number = 3;
var iconSpacing:Number = 5;
var nextX:Number = 0;
for(var i:int = 0; i < numberOfLives; i++ )
{
var icon:MovieClip = new Life_icon();
icon.x = nextX;
lives_container.addChild( icon );
nextX += icon.width + iconSpacing;
}
This way you could add extra lives easily if the player gained any by adding new icons at the last nextX value, like so:
function addLife():void
{
var icon:MovieClip = new Life_icon();
icon.x = nextX;
lives_container.addChild( icon );
nextX += icon.width + iconSpacing;
}
or remove them as the player loses them:
function removeLife():void
{
var numberOfLivesDisplayed:Number = lives_container.numChildren();
lives_container.removeChildAt( numberOfLivesDisplayed - 1 );
nextX -= icon.width + iconSpacing;
}
Using a container clip for the lives icons makes adjusting the location of the life icons easier if it becomes necessary later.
I have searched and simply cannot find what I need (if it exists).
A window will have a large picture.
The picture will be divided into zones (such as border lines that separate states on a map).
When a person clicks within a zone, then I will raise the appropriate event.
I've used AS3 with MXML to create a database program. All is working great except for this last step. I cannot figure out how the user is within a particular area of the picture when he clicks or when he touches.
I've read and tried to come up with an approach, and there must be (hopefully so) an easier way than the muddled nonsense I'm coming up with.
Thanks
VL
Are you drawing it in flash professional CS6? If so then why can't you just have the picture as a symbol and then just self divide the lines and make those divided areas into symbols that are children of the picture symbol. You could keep the individual state symbols right where they so that they stay true to the overall picture.
A first thought would be to make an instance of this picture symbol through the code, and then loop though all the children of that picture and add a click event to each one.
var picture:Picture=new Picture();
for(var i:int=0; i<picture.numChildren-1; i++){
picture.getChildAt(i).addEventListener(MouseEvent.CLICK, mouseEventHandler);
}
Please comment if I am missing something, or this does not work.
EDIT
Well, if you know the dimensions of the image, you could divide its width and height by 3(your number of rows and columns) and this is your zone dimensions. You then could take the mouse's click point relative to the top left of your picture and then divide its width by the zone with, and its height by the zone height, and then get its integer floor value, you could get which region it is. Code it below:
//This is all for a constat region list (like a window, or floor tiles, not things irregular)
import flash.display.Sprite;
var regionsX:int = 3; //Your number of windows across the row
var regionsY:int = 3; // across the column
var regions:Array = new Array(); // an array to hold the values that you will get from where the user clicks
// All of this used a 2D array method
for(var x:int = 0; x < regionX; x++) {
regions[regionsX] = new Array();
for(var y:int = 0; y < regionY; y++) {
regions[regionsX][regionsY] = "region(".concat(x).concat(",").concat(y);
// Here you make this equal to anything you want to get a value of,
//once the correct region is found (I just have a string version here for an example)
}
}
... // other stuff..
var picture:Picture = new Picture(); // your window picture
var regionWidth:Number = picture.width / regionsX; // Gets each region's width
var regionHeight:Number = picture.height / regionsY; // Get each regoin's height
...
picture.addEventListener(MouseEvent.CLICK, mouseEventListener); // add a click listener to the picture
function mouseEventListener(event:MouseEvent):void{
var mouseX:Number = picture.globalToLocal(event.stageX); // gets where the user clicked, and then converts it
//to the picture's cordinate space. ( 50,100 acording to the stage, could be (25,200) to the picture)
var mouseY:Number = picture.globalToLocal(event.stageY); // same for the Y
var regionIntX:Number = Math.floor(mouseX / regionWidth); // Dives the point by each region's width, and then
// converts it to a while integer. (For instance, if a region's width is 100 and you click at 288, then if you do the
// math, you clicked in the 3rd region, but it returns 2... why? (becaue the array counter starts at 0, so 0 is the 1st
// region, 1 is the second and so on...
var regionIntY:Number = Math.floor(mouseY / regionHeight); // Same for Y
var yourValue:String = regions[regionIntX][regionIntY]; // This returns that you initialy put into your 2d array
// by using the regionIntX and regionIntY for the array values. You have to decide what is stored in this array...
}
The simplest solution would be to add an event listener for MouseEvent.CLICK to the picture and in the handler check properties mouseX and mouseY of the picture. Define the bounds of each area in an XML or similar and check against current mouseX/Y to see which area has been clicked.
I get how to set depth in as3 - but with as2 i could begin multiple 'depth points' using numbers - where in as3 all i can seem to do is set this object to a higher/lower depth than that object. The problem is (when dealing with a stack of isometric boxes, which can be placed by the user on a grid in any order) i don't want to deal with the added complexity of having every element know where every other element is, then adjust appropriately.
What I'm trying to do is set up 6 total depth numbers/positions, one for each column in a 6 x 6 grid. So anything in column 1 will begin it's depth placement at say 500, anything in column 2 will begin its depth at 1000, column 3 would be 1500 and so on.
That way, the second i place an object on a particular column, it would tuck itself under, or place itself above all surrounding items in other columns, this to me is much much easier than somehow figuring out where 15 different sized boxes are, how they relate to one another, then figure out what depth order they need to go in.
Any ideas? as3 seems to have removed the ability to set a depth to a specific number :p
The approach can be simplified. You basically want to create 3 'container' clips and add them in order. The last one added is the top-most.
Bonus: if you want to rearrange, you can call addChild() on any clip (even already added ones) and that one will go to the top.
//// IMPORTANT STUFF ////
import flash.display.Sprite;
var top:Sprite = new Sprite;
var mid:Sprite = new Sprite;
var bot:Sprite = new Sprite;
addChild(bot);
addChild(mid);
addChild(top);
//// END IMPORTANT STUFF ////
// Move Stuff so we can visualize how this works.
// Then add some boxes so we can see what's going on.
mid.x = 20;
mid.y = 20;
bot.x = 40;
bot.y = 40;
// Add Top box
var t:Sprite = new Sprite;
t.graphics.beginFill(0xFF0000);
t.graphics.drawRect(0,0,100,100);
top.addChild(t);
// Add Middle box
var m:Sprite = new Sprite;
m.graphics.beginFill(0x00FF00);
m.graphics.drawRect(0,0,100,100);
mid.addChild(m);
// Add Bottom box
var b:Sprite = new Sprite;
b.graphics.beginFill(0x0000FF);
b.graphics.drawRect(0,0,100,100);
bot.addChild(b);
I'm using Adobe Flash CS4 professional for this Actionscript 3.0 project
(http://tutorials.flashmymind.com/2009/02/rotating-menu-via-actionscript-3/)
I even tried following the suggestions in the comments as well but this error always shows up:
TypeError: Error #1010: A term is undefined and has no properties.
at rotating_menu_fla::MainTimeline/frame1()
(for complete details, kindly click the link - http://i429.photobucket.com/albums/qq19/tsujzpie/screenshot_03.jpg)
I've been following every step of the tutorial but I'm stumped over the coding...
Here's the code by the way...
//Save the center coordinates of the stage
var centerX:Number=stage.stageWidth/2;
var centerY:Number=stage.stageHeight/2;
//The number of items we will have (feel free to change!)
var NUMBER_OF_ITEMS:uint=5;
//Radius of the menu circle (horizontal and vertical)
var radiusX:Number=200;
var radiusY:Number=100;
//Angle difference between the items (in radians)
var angleDifference:Number = Math.PI * (360 / NUMBER_OF_ITEMS) / 180;
//How fast a single circle moves (we calculate the speed
//according to the mouse position later on...)
var angleSpeed:Number=0;
//Scaling speed of a single circle
var scaleSpeed:Number=0.0002;
//This vector holds all the items
//(this could also be an array...)
var itemVector:Array = new Array ('1', '2', '3', '4','5');
//This loop creates the items and positions them
//on the stage
for (var i:uint = 0; i < NUMBER_OF_ITEMS; i++) {
//Create a new menu item
var item:Item = new Item();
//Get the angle for the item (we space the items evenly)
var startingAngle:Number=angleDifference*i;
//Set the x and y coordinates
item.x=centerX+radiusX*Math.cos(startingAngle);
item.y=centerY+radiusY*Math.sin(startingAngle);
//Save the starting angle of the item.
//(We have declared the Item class to be dynamic. Therefore,
//we can create new properties dynamically.)
item.angle=startingAngle;
//Add an item number to the item's text field
item.itemText.text=i.toString();
//Allow no mouse children
item.mouseChildren=false;
//Add the item to the vector
itemVector.push(item);
//Add the item to the stage
addChild(item);
}
//We use ENTER_FRAME to animate the items
addEventListener(Event.ENTER_FRAME, enterFrameHandler);
//This function is called in each frame
function enterFrameHandler(e:Event):void {
//Calculate the angle speed according to mouse position
angleSpeed = -(mouseX - centerX) / 5000;
//Loop through the vector
for (var i:uint = 0; i < NUMBER_OF_ITEMS; i++) {
//Save the item to a local variable
var item:Item=itemVector[i];
//Update the angle
item.angle+=angleSpeed;
//Set the new coordinates
item.x=centerX+radiusX*Math.cos(item.angle);
item.y=centerY+radiusY*Math.sin(item.angle);
//Calculate the vertical distance from centerY to the item
var dy:Number=centerY-item.y;
//Scale the item according to vertical distance
item.scaleY = (dy / radiusY)+2;
//Set the x scale to be the same as y scale
item.scaleX=item.scaleY;
//Adjust the alpha according to y scale
item.alpha=item.scaleY+1.1;
}
}
I find it odd - it may be that the code is right but I don't know if these steps has messed up the project...
3 - Convert the circle into a movie clip...
4 - In the “Item” movie clip, create a dynamic text field in the center of the circle (in a new layer).
5 - Set the text to align center. Type some number in the text field. Give the text field an instance name of “itemText”. Embed numerals...
6 - Remove the Item movie clip from the stage. We will create all the items dynamically via ActionScript 3.
I could've given more screenshots but since I'm a new user, I'm only allowed a max of two - and contrary to this tag, I'm not doing an Android app.
(I'll give you added info once any of you would reply to this question...)
I have to admit that the steps 3 to 6 is confusing and didn't made sense to me - especially with step six, when you have to remove the movie clip from the stage. For me, if I were to do that, what would the script work on then?
Any idea what I did wrong?
EDIT:
Thanks, I realized my mistake - thanks for the tip :-)
But now, I tried to modify the code of this tutorial a bit to have words appear inside the circles (like "Home", "About", etc....) like what I've typed in the line in the screenschot - http://i429.photobucket.com/albums/qq19/tsujzpie/modifiedlineincode_00.jpg
But inspite of what I believe are the appropriate changes I've done, an error showed up still - (kindly see here - http://i429.photobucket.com/albums/qq19/tsujzpie/newerrorincode_00.jpg)
Why is that happening? Before I forget, in what section of the code must I insert a line that will make a clicked button display the info corresponding to it? (that is, if I click on the "Contact" or any of the buttons a window will appear beneath the menu on the stage...)
That errors means ActionScript has no clue what an Item is. Make sure you've ticked Export for ActionScript on your Item MovieClip in library and that the class is named Item also.
Update:
The tutorial you're following mentions itemVector is a Vector of Item instances, not an array of Strings like you're code suggests. This why you're getting the error displayed in your screenshot. It means ActionScript can not convert an Item to a String.
An easy fix is to create another array for the menu item labels:
var itemVector:Array = [];// = new Array ('1', '2', '3', '4','5');
var itemLabels:Array = ["Home","About","Contact","Gallery"];
NUMBER_OF_ITEMS = itemLabels.length;
and in the for loop swap this item.itemText.text=i.toString(); for this tem.itemText.text=itemLabels[i];
It seems that you don't fully grasp the difference between variable types. I would suggest getting familiar with the basics of as3 before moving forward. Also paying more attention to your code and fully understanding code you use written by others will keep you out of trouble. However you will still encounter errors. You might find explanations for those errors on the Flash Error Database.
Regarding the Carosel tutorial, also have a look at this video. It might help explain things better.
The compiler can not find the Item class.
Go into your library and open up the properties for the "Item" MovieClip.
Verify that is is set for export to actionscript.