Flash :: Use A Parabola Formula In Firing An Arrow That Will Always Intercept A Given Point

May 11, 2011

First note: mathematically, I'm not that skilled at all. I played a game on iPhone a while back where you press a point, and an arrow fires from your castle which will always intersect the point you pressed. I wanted to make a similar game, thinking it would be an easy quick make; then I ran into the realization that the mathematics for this is actually beyond my skill level.

I'm assuming they're using a parabola formula or something which would determine the velocity and angle needed when the arrow is launched for the arrow to always intersect the clicked point. I only vaguely remember how parabolas work from school and have no chance of working out any formulas.

[Code]...

View 2 Replies


Similar Posts:


Flash :: Perspective Projection Formula - Convert 3d Point To 2d Point?

Mar 27, 2011

How to convert 3d point to 2d point? I've found next formula in Internet(camera is situated in origin)

[Code]....

But these formulae give me strange result when z are less than zero(z<0) I need build line from A(100,100,100) to B (100,100;-100) As you can see these equations give really strange result when I try to convert B point in 2D dimension

View 1 Replies

Flash :: Formula To Determine Designation Point Given A Variable?

Aug 4, 2011

i have a game inwhich a bait is thrown determined by a variable of a power meter, when the meter is full it returns a variable of 1 when half 0.5 and when low near 0, how can i use this to determine how far my "bait will be thrown" onto the screen? i have tried how ever the X value would not be consistent with my fishing rod placement, and when the point is decided i will have to move my bait to that point and stop.

[Code]...

View 1 Replies

ActionScript 3.0 :: Arrow Point To The Mouse?

Apr 6, 2009

This is a fairly simple problem, yet I can't make it work. I have an arrow-shaped mc, and I want it to rotate, constantly, so it points at the mouse.

this is what i do every frame:vectorArrow.rotation = Math2.radsToDegs(Math.atan(-(root.mouseY - y)/ (root.mouseX - x) ) );

what happens is that it rotates strangely. It doesnt rotate fully, let alone point to the mouse. I've also tried someone elses code:

[Code]...

View 2 Replies

Actionscript 3 :: Drawing An Arrow At The End Point Of The Line Using Line Slope?

Jan 9, 2012

I am developing a white board application which allows the user to draw line with arrow head (some like Microsoft Word line with arrow feature). I am using graphics property along with lineTo() method to draw a line. Now i have to draw a angular arrow on the last point of line. I am drawing the arrow by connecting the points around last points. As 360 line can pass through this point and each line can have a different angle of arrow.

View 1 Replies

Possible To Intercept Javascript Call From Flash?

Jul 12, 2009

I'm doing a Security Project now. And this project needs to intercept javascript call from Flash and do analysis. I've searched the web for a couple of days but still can't find any solution. Flash can use getURL, externalInterface.call to execute javascript code, and I want to stop the malicious calls from Flash. Thus, I need to intercept these javascript calls.

View 1 Replies

Flash :: Intercept All Buttons Clicks

Feb 9, 2011

Is there a way that I can intercept all button click event in my Flex(air) app, because I need to add a sound when some button is clicked, and I dont want go over all screens and add this function and also change each click event in each button.

View 1 Replies

Flash :: Intercept All Buttons Clicks?

Apr 30, 2011

Is there a way that I can intercept all button click event in my Flex(air) app, because I need to add a sound when some button is clicked, and I dont want go over all screens and add this function and also change each click event in each button.

View 3 Replies

Flash :: Javascript - Intercept A Based Url Redirect?

Aug 3, 2011

We have some older Flash and Flex files that someone before me lost the original files on. Now they want to add event tracking when some links inside the SWFs are clicked that use the old navigateToURL type ActionScript. Does anyone know if you can intercept that action with JavaScript so I can add the tracking they want before it redirects the page?

View 2 Replies

Flash :: Intercept Video And Audio Streams?

Sep 16, 2011

is there any Java library out there that can help intercept video and audio streams being sent through the browser?

So for example, a video starts loading through a flash player using some Flash server, the java application would listen for video/audio stream and capture and write it to video on the disk.

View 2 Replies

ActionScript 2.0 :: Custom _xmouse Coordinates Using Parabola

Nov 7, 2006

i was trying to print out the readings for custom _xmouse coordinates as the mouse moves. I succeeded in manipulating xmouse coordinate readings with two points, but now i am trying to manipulate it through 4 points! I tried using a parabola calculation as the numbers get bigger and bigger as they get further from 0, x. I'm beginning to think that i'll have to add a different calculation after the mouse passes each point now, like an IF statement if _xmouse goes to 30, then start multiplying a different number, until it reaches 60 etc. Check out the image below, i'll post the swf if you want, i've tried lots of different transformations etc, nothing goes through my 4 custom points: 0, 30, 60, 90. I can make it go through two points, 0, and another number, but never more than 2.

View 1 Replies

ActionScript 3.0 :: Draw Parabola - Using Given X And Maximum Height

May 10, 2010

I have another math question. I think this is fairly basic stuff but I'm so bad at math I can't wrap my head around it. What I would like to have is a formula that allows me to create an upwards parabola, using a given X and a maximum height. The maximum height is always the same as the positive X (so 3 if X = 3 or -3). The parabola must always end or begin at 0. Am I making sense at all?

View 1 Replies

ActionScript 2.0 :: Integration - Using A Parabola To Generate Skewed Random Results?

Mar 21, 2007

I'm trying to write a function that'll take a set of results, assign a probability to each result, and then pick one result at random, according to its probability.I thought I'd calculate the area under sections of a basic parabolic function (y = x^2) to generate the skewed probabilities.

Because of the nature of this curve, the amount of skew is determined by the range of the parabola used, as x tends to zero, the gradient tends to zero, so using 0 - 0.001 would be only slightly skewed. As x tends to infinity, the gradient tends to inifinity, so using values 0 - 100 the probabilities would be heavily skewed.to recap then, my function would be passed a skew factor, essentially the upper limit of the parabolic graph to use. All I need do is divide the whole range into equal sections according to the number of values and determine the definite integral for each range of the parabola assigned to each of the possible values. Make sense? Good.

integrating y = x^2 gave me y = x^3 / 3

from this I developed the following code:

PHP Code:

vals = ["dog", "cat", "monkey", "horse", "marmotte", "hampster", "yetti", "ant", "mouse", "duck"];
skewfactor = 9;
trace(getProbabilities(vals, skewfactor));

[code]....

and it kinda worked. It produced a set of probabilities which looked like they fell in line with a simple parabola.My problem is that no matter what skew value (i.e. max range) I pass in, it produces exactly the same results and I'm not sure if my maths is wrong, my theory on the nature of the curve is wrong or if my code is wrong.

View 5 Replies

ActionScript 3.0 :: Flash Doesn't Like My Formula?

Mar 31, 2011

I am trying to code a loan calculator into Flash, however AS3 doesn't like my formula and won't calculate it, can someone help? Here is what I have:

loan=15000
apr=13
term=48

var loan_amount = (apr + (apr / (Math.pow(trm, (1 + apr)) -1 ))) * loan;

When I print out the loan_amount I get a 0.If I do: var loan_amount = (Math.pow(trm, (1 + apr)) -1); it will give me the result 1.0331079714165e55

As soon as I add the next part of the equation (apr / (Math.pow(trm, (1 + apr)) -1 )); it will give me the actual apr value as the result instead of the apr divided by the 1.0331079714165e55.Likewise, if I try to add a fixed value instead of the apr variable, it will return that fixed value instead of doing the math.

View 6 Replies

Javascript :: Intercept The Response Of An Ajax Http Request Made By A Flash Object ?

Feb 24, 2012

I want want to intercept the response for an ajax request made inside a flash object via javascript.

View 3 Replies

ActionScript 3.0 :: Fonts - Load Mathemetics Formula In Flash Dynamically

Jan 4, 2012

Is it possible to load mathemetics formula in flash as3 dynamically.

[Code]...

View 4 Replies

ActionScript 3.0 :: Flash AddChild Size Reference In Positioning Formula

Sep 8, 2010

I'm trying to just make an image center horozontally in the page when I addChild it. I figure the formula I need is the width of the of the image deducted from the width of the page divided by two... but I don't know how to make that into a formula, as in I don't know how to represent the size of the newly added child in the formula. Code is below.

[Code]...

View 1 Replies

Flash :: Drawing A Line From Point To Point In ActionScript3.0?

Oct 27, 2011

Lets say I have two objects, and I want to use action script to draw a line connecting them, which will update automatically as they are moved/ dragged.Can anyone show me how to do that, and also how to control line's parameters like colour, weight etc?

View 1 Replies

Java :: "Intercept" Flash Socket?

Dec 7, 2010

given a flash application that opens a socket connection to a webserver, is it possible to reads packets exchanged with a java application, without redirect all the flash traffic ( that is, without programming a socket proxy)?

View 2 Replies

ActionScript 2.0 :: Calculate An Intercept Course?

Nov 30, 2006

I'm working on a game which will involve space battles, and automated turrets. The turrets are giving me the headache right now. Here's what I got so far.

[URL]

The problem is, that the turrets aim at the center of their target, instead of aiming in front of their target to compensate for their movement. I can't seem to crack the equations needed to get the right rotation, for the turret to fire from. The data the turret has avaible, or that I could easily make avaible to it, are:

- The distance to the target (and it's x and y components)
- The current speed vector (the size and rotation)
- The angle between the heading of the target and the turret's location
- The speed of the turret's shot (fixed speed)

View 2 Replies

ActionScript 2.0 :: X Intercept Of A Circle?

Aug 2, 2010

This is really stupid, but I'm absolutely stumped and have forgotten all of the math I used to remember from school. I've been trying to research how to calculate this problem, but it always involves 'solving for x/y' which I have completely forgotten how to do...I need to know how to find where the x intercept position where the h (height) from the bottom is variable. The circle is always centered at 0,0... so there's no need to factor any of that.he closest formula I've tried that calculates the x intercept is sqrt(h) where h is the y distance from the centre of the circle, but it's still not right.

View 3 Replies

ActionScript 3.0 :: Intercept Request Sent In Loaded SWF

Sep 11, 2010

Say i have a SWF file loaded inside a Flash , which i do not have the source code for, and I want to redirect all the requests inside that SWF to another address(or block them, then read the request parameters and just send new requests with the exact same parameters from inside the container object). Is that possible? And if so, how? Once again, I do not have the source .fla for the files loaded inside the container, and recreating them from scratch is not an option. So this, to me, seems like the easiest way.

View 1 Replies

Professional :: Intercept Variable Present In Swf?

Apr 4, 2012

within a few banners that I'm realizing I insert a variable, clickTAG, as a step in the url of the landing page after the click.Because the variable changes, I would like to capture this variable externally to externally store how many times you see a banner and how many times you see another.I like using some language asp, php or javascript to extrapolate outside this value?

View 3 Replies

Flex :: Intercept Value Passed To Item Editor?

Dec 28, 2011

I'm trying to intercept the value that is taken from a DataGrid's GridColumn's itemRenderer and applied to the itemEditor, and vice-versa. I need to be able to format this value. However, my project is complex, so I may be focusing on the wrong idea in what I'm trying to accomplish.

I have a Spark DataGrid component (with ID dg) that I am dynamically populating from XML. I create an ArrayCollection from some nodes, and a regular Array from sub-nodes that is added as a property of the ArrayCollection. That ArrayCollection is then used as the dataProvider for the DataGrid.

Here is an example segment of a typical XML node and it's sub-nodes:

<item name="physOrderTable" text="" type="notes">
<cols>
<col id="0" text="Day/Time" />

[Code].....

This is the only method I've been able to use to achieve the desired result. This all works fine, if all I want to do is merely display information. But I need to be able to edit the values in each cell, and apply this back to the dataProvider, as I need to rebuild XML with the updated values later.

I have tried everything I can possibly think of to be able to do this. I built my own itemRenderer, then my own itemEditor, then scrapped them because it felt like I was re-inventing the wheel. But was I? I tried reading through the code for the DataGrid, GridColumn, and related classes, but I couldn't find any reference to the itemEditor beyond it being an IFactory. I have no idea where or how it tells that IFactory to be a text input or whatever it is.

Here is my issue:

When I turn on the DataGrid's editing, and double-click a cell, it takes the entire array of the col dataField for that column's cell, converts that array to a string, and displays the entire string in the edit text box. If I cancel the editing, or save the editing, it sets the string to the .col property. Then the labelFunction tries reading that string as an array, and it crashes. I was able to get the typeof the col dataField and converting it to an array if it's a string, but I shouldn't have to.

I need to have it display just the value of the cell for that particular row and column when the instance of the itemEditor is created. When that value is changed, I need it to apply back to that column's index in the .col array of the dataProvider. So, similarly to how it displays information in the labelFunction, I need to edit the information and send it back.

I've seen lots of custom itemEditors and itemRenderers for GridColumns, but these are hard-coded in the MXML. My grid is almost entirely dynamically created, so that's unfortunately not an option for me, as I won't even know how many columns or rows there will be when the DataGrid is created. I tried using rendererIsEditor, but that only seems to be on the MXML instantiation of the GridColumn, as there's only rendererIsEditable in the ActionScript, and it doesn't seem to work (or I don't know how to use it as intended).

View 1 Replies

ActionScript 3.0 :: Intercept The Window Size Of The Swf Container?

Oct 29, 2011

I wanna know if exist a class in AS3 that allow to intercept the window size of the program in wich sfw is executed. For example the browser window size

View 2 Replies

ActionScript 3.0 :: Intercept The Coordinates Of A Nested MC Respect To The Stage?

Oct 14, 2011

I've a button on the stage called "closedbt" that i have to move near an image. This image is nested into a MC named "gallery", then it's coordinates are different from the rest of the stage.

View 4 Replies

Flex :: Treeview - Intercept Last Opened/expanded Node Of A Tree

Jun 24, 2009

I have a partially populated Tree component and I have to invoke a remote service when User expand (not when he select) a node to retrieve it's leafs. How I know witch node have bee selected.

I'm using Flex 3.3.

View 1 Replies

Flash :: Why Are Event Listeners Firing More Than Once

Jun 14, 2010

In my Flash project I have a movieclip that has 2 keyframes. Both frames contain 1 movieclip each.

frame 1 - Landing
frame 2 - Game

The flow of the application is simple:

User arrives on landing page (frame 1) User clicks "start game" button User is brought to the game page (frame 2) When the game is over, the user can press a "play again" button which brings them back to step 1

Both Landing and Game movieclips are linked to separate classes that define event listeners. The problem is that when I end up back at step 1 after playing the game, the Game event listeners fire twice for their respective event. And if I go through the process a third time, the event listeners fire three times for every event. This keeps happening, so if I loop through the application flow 7 times, the event listeners fire seven times. I don't understand why this is happening because on frame 1, the Game movieclip (and I would assume its related class instance) does not exist - but I'm clearly missing something here.

I've run into this problem in other projects too, and tried fixing it by first checking if the event listeners existed and only defining them if they didn't, but I ended up with unexpected results that didn't really solve the problem.

View 2 Replies

ActionScript 3 :: Flash - KeyboardEvent Not Firing?

Nov 4, 2010

I'm new to ActionScript development and am using the FlashDevelop IDE. I've been playing around with some really simplistic things and have come across a problem I can't seem to solve.My application compiles and runs, and a function that watches click events fires perfectly and I can see the event in the console when I pass it to trace(), yet the same code watching for KeyboardEvent fails to fire at all.Here's my code:

package GameTesting
{
import flash.display.Bitmap;[code]............

The MouseEvent trace() fires every time as expected, but KeyboardEvent never fires, no matter what key I press.

View 2 Replies

Flex :: Intercept Service Method Calls Using Metaprogramming In Groovy/grails?

Feb 11, 2010

I have a several Grails services that are invoked from Flex code using Spring BlazeDS integration. I wanted to add some general debug logging using the groovy metaClass. I have the following in a bootstrap class:

class MyBootStrap {
def grailsApplication
def init = { servletContext ->

[code]....

View 3 Replies







Copyrights 2005-15 www.BigResource.com, All rights reserved