ActionScript 3.0 :: Slope Detection In Platformer
Jun 15, 2010
I have an art based platformer with a movie clip that is basically a triangle shaped object that serves as the slope.My problem is in the collision detection with the slope. Here's the code that i currently have - [code]This basically places the rectangle shape that serves as the main player (_rec) along the slope and increments its y position based on it's current x position. The reg point of the slope is on the bottom left.The problem is that this code comes into effect even if _rec is jumping over the triangle because of the square shaped hitbox of the slope. Also, for the same reason, I cannot jump while on the slope itself.I know of a way to rotate the character based on the incline in the ground but I don't really like that idea. The character should stay vertical at all times. I really don't want to do a tile based version as I have a lot of art already designed, it's only the ground objects that are basic shapes.
View 1 Replies
Similar Posts:
Dec 15, 2002
I'm having a problem with my multiple collision detection code for a platformer game.. It checks for collisions on all objects separately and it checks only one object per frame. I need to make somekind of a loop so that it would check every object in one frame. Anyone got an idea? It's coded like this:
[Code]...
View 4 Replies
Nov 19, 2010
I have this rather cool code for a _mc on a slope. The only problem I am having is making the sprite.mc change states/animation when the sprite.mc is jumping.here's the code I have:
onClipEvent(load){
speed = 5;
gravity = 0;
r = _height/2; //radius
[code]....
View 1 Replies
Apr 23, 2011
how to work out the direction of the mouse on stage and say from this:
"if the mouse goes from the left to right (visa-versa) once, add score +1" and "if the mouse speed which is player controlled - slows down - to then display an error graphic"
View 21 Replies
Jan 22, 2011
I have the xspeed and yspeed of a round ball, xspeed is distance ball moves to the right each frame and yspeed distance ball moves down each frame.I have 3 different gradients of slopes, one is at 15 degrees off the horizontal.How can I calculate the xspeed and yspeed of the ball after a collision with, for instance, the 15 degree slope.
View 2 Replies
Jan 27, 2011
I'm trying to create a simple graph showing the stock trends for the past few days. In the x axis I have the dates and in the y axis I have the stock value. I have to do this dynamically and I think I can figure it out, but I need help with something else: I need to be able to (dynamically) draw the slope of the line as the user clicks on a point... something like in www_calculusapplets_com/twicediff.html except that instead of having the slider the user will click on the actual line.
View 6 Replies
Jul 7, 2011
I'm having trouble with this mainly because Flash's Math.atan() doesn't give the same results as my TI-83's tan^-1 function.
If I have a line with a positive rise and run for the slope and use tan^-1( (the slope) ) on my calculator, I get a value between 0 and 90, with 0 being a horizontal line and 90 a vertical line. A negative numerator with a negative denominator for the slope puts it in quadrant 4 where tan^-1(slope) gives 0 to -90 values, again with 0 being horizontal and -90 being vertical.
Putting the slope of the blue line into tan^-1() would give a value of about 80 degrees, while the red line would calculate to about -50 degrees. The rotation property Flash uses rotates objects clockwise and can range from 0-360. Using the -90 to 90 values and figuring out if the rise and run of the slope are positive or negative, I can determine which quadrant the line is in and calculate the degrees.
However, this so far is not possible for me because Math.atan() gives odd results.
A practical application for this knowledge would be a player in a game throwing spears from (0,0) to the mouse x,y. The slope would take care of the trajectory of the spears, however if your spear sprite is a spear flat and facing toward the right, you need to rotate it appropriately from 0-360.
View 1 Replies
Apr 21, 2007
How can I rotate a movieclip so that when I move it, it will rotate slightly depending on the angle of the ground. The only thing I can relate this too is the old school sonic games. How would I find the curve of the ground and apply it the moving character?
View 8 Replies
Jul 29, 2010
Is there any as3 based source code that accomplishes pitch detection or beat detection accurately? Doesn't have to be both, if you know of at least one of those,
View 4 Replies
Aug 21, 2010
i'm currently making a flash game which has ground and water.And its going to be big.For someone whos 13 like me i have problems.The script was edited recently so sorry to anyone who was working on it.the issues are underlined.here the script.
onClipEvent (load) {
grav = 2;
speed = 15;
[code].....
View 2 Replies
Apr 11, 2011
how to make coins for a platformer, the video however did not show how to keep count of the coins you collect....I've tried a million things but nothing seems to work! Here is a link to the video http:[url]....what I have to do to keep track (score) of how many coins I pick up,
View 7 Replies
Nov 3, 2011
I'm in the process of building a platformer with Flash MX using Action Script 2.0, I'm following this tutorial: [URL].. However I'm not following the tutorial, I downloaded the .fla file and followed that. The .fla file available for download functions, but my recreation does not.
I have used all the elements from the tutorial platformer, the scoring counter, the health counter, the pickups, the enemies etc. But it does not work properly.
Here is my attempt for download, can someone please explain where i've gone wrong, and if it's not too much trouble, fix it.
View 1 Replies
Jun 20, 2010
At the moment I am using two mini objects within the line to calculate the slope of the line I have.
I was wondering if there was some easy function within as3 to find the slope of a line that had been drawn out, if not... I suppose I have my own theories on how to do it, such as checking for hit tests in a circle until I find the line.
View 5 Replies
Jan 24, 2012
I was wondering if anyone knows of a way to isolate the pixels that are adjacent to a certain color pixel in a BitmapData. For example, if there was a BitmapData that looked something like this:[code]I was wondering if there was a proven and efficient way of doing this, because I am trying to make a collision engine of sorts that can give me the collision normal of the best fit slope of a given bitmap image. In the scenario of the last example, the slope would be 1/1, or -45 degrees. The way I have it now, I am isolating the adjacent pixels by blurring the entire image, looping through all of the pixels, and storing the gray ones in an array. from there I can determine the best fit slope of the surface of the image. The only thing is that this seems like a lot of work for the CPU. Is there a better way to isolate the black pixels adjacent to white ones than blurring the image and looping through every pixel?
View 12 Replies
Nov 6, 2010
I'm doing a project at the moment where I am creating a side scrolling platformer in AS3. Currently I have:
-The "Character' which is a ball that can be controlled using the arrow keys and has bounce, friction, gravity etc.
-A scrolling system, the character can move freely within an invisible inner boundary, once the character leaves this boundary the background will scroll to compensate.
The thing I am having issues with is creating collision detection between the "Character" and the "Background.Ground" so that the character can move along the shape of the Ground movieclip within the background movieclip.
Actionscript Code:
package{
import flash.display.Sprite;
import flash.events.Event;
import flash.display.MovieClip;
import flash.display.Stage;
import flash.geom.Transform;
import flash.events.KeyboardEvent;
[Code] .....
View 21 Replies
Dec 12, 2009
I want to create a platformer game, but there is no tutorials that actually tell you how.What I dont understand is:
- How the level changes when you get to a certain point
- How to do collision with walls
- How to make the player move
View 5 Replies
Jul 6, 2008
I am making my second game, and it's going to be a platformer. Unfortunately, I have no idea how to make the character (named hero) jump only to a certain height, and then fall back down. someone, please post a way to do this!
View 1 Replies
Nov 30, 2009
I'm making a simple side scrolling platform game called Kit Run. For moving left and right, I have the sprite run in place while the background scrolls in the opposite direction. However, when the sprite jumps straight up and down, the background stays stationary. What I need help with is getting the background to scroll down when the sprite moves up beyond a certain point, and up when the sprite moves down beyond a certain point. Ive tried several probably unnecessarily complicated methods that only sort of work.
View 4 Replies
Aug 10, 2010
I'm about to create a scrolling platformer game, something like Gum Drop Hop, where the background is scrolling constantly, and you have to keep running or else you'll die. Do you know any tutorials on how to do something like this? I'm not really sure how I would generate random platforms all the time...
View 5 Replies
Jul 5, 2009
I followed this tutorial to make a bouncing ball in flash. Its AS2 so it took me some time to make it work in AS3 Now I want to make the ball roll down a slope, fall and bounce when it hits the ground. I have attached my .fla.
View 1 Replies
Jan 28, 2012
I am currently working on a platformer using accelerometer to move the character and xml to load levels as so..
[as]
level.x += (e.accelerationX*40);
if (e.accelerationX > 5) {
e.accelerationX = 5;
} if (e.accelerationX * 40 < 3 && e.accelerationX * 40 > -3) {
player.gotoAndStop(1);
[Code] .....
And it is all added into one movieclip called level. My problem is when the character hits under a platform it will go up it which I don't want it too, I don't know how to fix it heres the gravity code.
View 11 Replies
May 25, 2011
I'm trying to make a platformer and I'm having a problem where the character will clip half through the ground upon landing from a jump. Just so you have a clear picture -- right now all that's on the stage is the character (which the code is placed in) and the ground (a completely flat plane called 'ground')
Here's the code:
onClipEvent(load) {
jumpHeight =0;
defaultJumpSpeed = 20;
jumpSpeed = 20;
} onClipEvent(enterFrame) {
[Code] .....
Right now the character's jump constantly decreases to give the effect of gravity. It starts out positive (character moves up), then goes negative (character falls down) The character will only stop falling if they come in contact with the ground (in the form of a hit test). The problem (I think) is that the character can fall at, say, 36 pixels a second or more, so sometimes they'll be half through the ground before the hit test goes off and stops him from falling further. How do I stop it without making the character fall-rate really, really low.
View 2 Replies
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
Jan 26, 2010
School Project with the following actionscript in Flash 8, I want to show a slope graph? What code to add to make slope graph work?
/*var orig_x:Number;
var orig_y:Number;
orig_x = (plane_mc._x)+(plane_mc._width/2);
[code].....
View 0 Replies
Nov 19, 2009
I have my player, I have my enemy, and I want to make it so that when I hit "A", the player attacks and if its close enough to the enemy, the enemy dies.I've found how to do this in AS2, but not AS3.
View 4 Replies
Dec 16, 2009
I am designing a webpage with a password (yes, I know it can be hacked)I want to be able have an alert appear in the textbox "mess" when the Caps Lock key is activated. (not just being held down). I have already tried this and it comes out as staying on until you leave the page or mess changes.[code]What can I put to make the "CAPS LOCK IS ON" go away when the capslock is off?
View 1 Replies
Jun 21, 2010
Im currently working on a demo flash game built on AS 2.0. im a very beginner to this flash and AS and im stuck up with a very silly concept though im not able to overcome it. the problem i have is with collision detection ie hit test and im really struggling with it.
[Code]....
View 1 Replies
Jul 19, 2009
I have an if statement set up for the rollout on a button:
on (rollOut) {
if (_root.mb == false) {
copymb.gotoAndStop('off'); } else if (copymb._currentframe ==
[code]....
View 2 Replies
Mar 31, 2011
i have a snake game, that after time loads sprites in an array to make the snake grow. Just wondering how i would go about adding a hit so when the head of the snake hits the body something happens. Below is the full document class code.
<code>
package {
import flash.display.Sprite;[CODE].....
View 5 Replies
Oct 30, 2010
I was wondering what do the AS3 experts would do to detect a color with the webcam (red) and draw a sprite on those color boundaries.
View 2 Replies
