ActionScript 1/2 :: Add A Small Amount Of Physics To Some Moving Elements?
Nov 4, 2009
I need to add a small amount of physics to some moving elements.I found flade, but it looks like overkill for what I'm looking for. Also, all the examples are side-views with gravity.
Basicaly, I have a top-down view, and have square shapes that I want to be able to slide along a wall when they hit it at an angle. They don't even need to rotate when they make impact. I tried comming up with my own solution, based on the relative rotations and quarants they collide on, but it is very clunky. I can't help but feel there is a better way to do this. Heck, there might even be some usefull ActionScript function that I don't know about.
After read a lot about ball physics, watch some examples and few days of trying making pinball with bitmaps, I use simple (easy to work with) and fast performance Physics AS3 engine for bitmaps [URL] but still cant fix problem: if ball is moving too fast and object on path is too small, there will be no collision detection (code works perfect only with bigger objects or if ball is moving slower). I am not good at physics and maths. Here is function code which make physics for ball on every frame rate (but maybe its better to change it to setTimeout):
function showFrame(e:Event) // onEnterFrame{ var collisions:Array = collisionlist.checkCollisions(); if(collisions.length) // if collision{ var collision:Object = collisions[0]; // get collision information var angle:Number = collision.angle; // get collision angle [Code] .....
how do I get this code to repeat itself continually, because it just executes once. Im not that good with listeners, i know functions and variable etc though im not that bad.
Code: if (health<=0) { gotoAndStop("mainDead");} Its on a frame, not a MC.
I'm trying to code a click-and-point adventure game for a class, in which interactive objects glow when you mouse over them.... In the frame I have the background image (in which there is, say, a drawer), and an image of the drawer glowing placed exactly over top of that. The glow image is invisible until you mouse over it, at which point it is supposed to become visible (and disappear upon mouseout). I have the mouseover function linked to the entire glow image (which is a movieclip), but it only seems to work when you mouseover a specific portion of the image (usually a corner). The code looks something like this:
ActionScript Code: DeskDrawer.addEventListener(MouseEvent.MOUSE_OVER, drawerLightUp); function drawerLightUp(e:MouseEvent){ DeskDrawer.alpha = 100; }
when the glow-image is moused over, it moves upward slightly and a small amount of whitespace appears at the top of the image.
I wanted to study some physics code lines related to flash actionscript 2.0.Is there anyway to build a model with physics incorporated without a physics engine? By bare actionscript?If yes, can anyone show me a tutorial or an explanation to learn somehting about it, please?
Eversince I've worked with AS3, Flash always seems to have some odd way in rendering pixel-precise vectors. For instance, Friday I tried to draw a roundRect with a line around it. However, when zoomed at 100% it looks crappy and not how it's meant to look:So, when zoomed in in Photoshop you'll see more clearly that it's off:But whenever I zoom in with Flash itself, it looks OK:The quality is set to High, so that can't be it. Is there any flag in AS3 to make Flash render vectors more accurate?
I just read the tutorial "Finding Values in an Array". Sure, the code works, but that's only because we are searching arrays the contain a small number of elements. Suppose we have n elements in an array. To search that array for a particular element we may have to do n comparisons. If the array we are searching contains 10 million elements, we have a problem; can you imagine doing "if (this == that)" 10 million times? There's got to be a better way to search the array. Or perhaps we shouldn't use arrays to store the information.
I know you can add a var to add grvity and velocity ect. But what are the limits of this?Can i have a ball roll downhill using physics from within flash, without a external physics engine like box 2D.Can i have impulses? Well thats not important just wondering really.What can you do with physics in flash?
I have a square box, which is larger than the stage. The box can be moved around the stage, using the startDrag/stopDrag methods. The box starts a 0,0 and gets moved with the mouse...
ActionScript Code: board.addEventListener(Event.ENTER_FRAME, boardMiniMapLocation); public function boardMiniMapLocation(e:Event){ if(board.x >= 0){
[Code]....
In the above, the first two if statements work, it is just the last one that doesn't work.
What is supposed to happen, is when the board is dragged to the left, and it hits the boards right edge is equal to the right edge of the stage, it is supposed to not allow the board to move any more to the left.
Does anybody know how I could make a MC keep moving a certain amount when I let go after dragging it. I want the distance it goes to be based upon how quick I moved the mouse before I let it go.
Does anybody know how I could make a MC keep moving a certain amount when I let go after dragging it. I want the distance it goes to be based upon how quick I moved the mouse before I let it go.
Currently the problem is that the label actually do not leave borders of the first canvas (I see scrollbars instead of it).I think this is related to globalToLocal conversion problems, but do not understand how to use it.Also another question is how to animate the movement corretly, because move function performs movement without any visible action.
I have gone through the tutorial on this site regarding random movement. But I need it to be kept in a frame. This is the code(from this site)
Code: function getdistance(x, y, x1, y1) { var run, rise; run = x1-x; rise = y1-y; return (_root.hyp(run, rise)); } function hyp(a, b) { [Code] .....
Lets say I make an physical border for the element. A "box" 200x100 and this box is centered. How do I keep my random moved element inside this "box" or frame you may call it.
I have been having a serious issue with custom video where flash is saying that the amount of the video so far played is MORE than the amount that it has downloaded, which is clearly impossible. This results in various problems, such as the playhead (scrubber) moving past the end of the loader bar. I posted a simple demo that displays the amount loaded and the amount played in text fields. You can see it at: [URL][Code]...
So I have been having a serious issue with custom video where flash is saying that the amount of the video so far played is MORE than the amount that it has downloaded, which is clearly impossible. This results in various problems, such as the playhead (scrubber) moving past the end of the loader bar.I posted a simple demo that displays the amount loaded and the amount played in text fields. You can see it at: URL...[code]I encoded the video at a high rate so that it would download slowly. It may not playback smoothly, which I am not concerned about. What I am concerned about is the numbers below the video what are derived from ns.bytesLoaded and ns.time. If you watch it for a bit, the amount played should exceed the amount loaded.
I double checked the video duration and the bytestotal that flash is reporting and they are correct. I don't know of any way to check the accuracy of bytesloaded.If your internet connection is super fast, you may not see the issue - it only occurs when it is playing back faster than it is downloading - if this is the case, you may need to throttle your speed down, or start downloading a large file while you are watching this demo in order to see the issue.But this is a serious issue and means that building custom video interfaces with loadbars and playheads is impossible!
I am in need for some 2D physics seen from "above and straight down". Basicly I can sum it up with a "throwing balls into walls" kinda physics.
There seem to be quite a few physic engines for as3 out there, but I wonder if anyone have anyone special to recommend regarding my particular need as well as performance of the engines.
I'm trying to create a simple top game. Except, the movement of toy tops isn't so simple.I've been able to get the top to trace out squashed loocking spirals. However, the motion isn't random and there's no object detection. I was thinking that some variation of a bouncing ball script might work. However, the movement would have to be confined to the appearance of a perspective plane (so that it looks like it is spinning on something flat)
I want to make a game using physics in Flash, so I stumbled upon Box2D, but i find that hard to use [the basics are simple, but when i see the scripts,so i was wondering if there are easy to use flash physics engines?
There are some open SDK for Flash, that could be done. Rotating photos with physics? Examples of such programs BumTop, ePic, Coloris (no physics). The photo on the plane, it can be moved to the real physics?
I need help with one of my Flash projects,I'm trying to use gskinners shape based collision detection, but for some reason I cant get it to work, but im pretty new to using classes, so I dont understand the structure too much. Can i get a tutorial on how to use the gskinner class? im using the as2 version.heres the code, bare with me, there's a lot here. in all codes, mc1 is the track outline MC, and mc2 is the car
basicly im making a 2D top down version of WipEout HD Fury, so file structure is something like this (the .fla is called wipeout as3 because i was initialy coding in as3 and never changed the filename).wipeout as3.fla (the flash file containing all the MCs and animations, but only enough coding to import all of the external code files, as well as the VCam and its script) the code is;
Code: Select all #include RaceControl.as"
the RaceControl.as is used to determine the Car's control scheme, and refers to a physics code called RaceCar.as. i found it on the interwebs, all credit to matt carpenter;
Code: Select all// Race control
// Create key listener[code]........
the Bounce Function is my own work, and is what i want to happen when a collision is detected.now, the movieclip used for the car is my own drawn design, as is the track, and i want to use GSkinner's shape based collision to detect the collisions properly. so far i have the car driving around quite happily but i need it to collide with the walls of the track, rather than drive right through them.
I need to animate little blocks to fall down when rollovered... but i want them to start falling and keep falling once mouse hittests with it... so when the mouse isn't over the clip... it keeps falling... does anyone know how i can do this? and if anyone knows some good actionscript for elastic falling with slight rotation that would be sweet....
Some time ago i played this great flash game I want to create a simple level where you can walk around, just like in that game. But i was wondering what kindof physics engine or collission detection i would need if you want to walk over hills or objects where the persons reacts to
I am trying to figure out the collision physics for a top-down racing game in Flash / AS3. I am currently using the hitTestPoint method for detecting collisions, but I don't know how to apply a decent physics method to bounce a vehicle off of a wall that it hits.
