I am a straight noob. Everyone else says it, but I'm dead serious.
My question is, what is the best way to make a power meter to move a object? Meaning, how to set it up so that the longer the player holds the more power they get. Also how, would I incorporate physics?
What I'd like to accomplish is to have a player holding onto something so that when he taps on the screen and hold he powers up, and when he lets go he throws the object a certain distance.
just checking if the there is any thouch sequence or not is rather an easy thing, you just have to overload two functions for your scene class, one to inform you whenever a touch sequence begins and one to tell you touch is ended. the source code example is describe in this link. after than i think you need a gauge to show how much power is gathered so far, the easiest way is to use a texture with full power shown in it and the set it as texture and then show it little by little as the power goes up just as the code below:
// to create the gauge with zero power
CCSprite *s=[CCSprite spriteWithTexture:[CCTextureCache addImage:#"gauge.png"] rect:CGRectMake(0,0,0,10)];
// and then whenever the power changes you call this method
[s setTextureRect:CGRectmake(0,0,power,10)]
note that in my code i am using a 100x10 texture (power is somthing between 0..100 and texture height is 10 as the last parameter in both CGRectMake functions)
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So let me preface this that, i am very new to unity this is my first week actually lol and i couldnt exactly find anything that would answer my question.
Anyways, i have this like thwomp object that has 3 animation states crush, reset, and wait. and it goes up and down as you would see it normally just on a timer because of the wait. it is done by adding the position property and then moving the y up and down. pretty simple i think, couldnt think of anything better. it works perfectly just like i want it too.
but when i made it a prefab and try to make more of them, the animation for the copies have the same x and y as the original. so like even though i can change the base like default positioning of them whenever the game starts and the animation plays they just perfectly overlap with the first original one that the prefab was made with. when i try to change the x coordinate on the copies animation it updates the x coordinates for all them. this happens even when i delete the prefab and just manually make copies with ctrl + d as well (im not sure if this any different?) . i assume this is because they all share the same 3 animations so when you change the animation it changes it for all them and that makes sense.
but i really dont want to make 3 seperate animations for each replica thwomp i make, i feel like there definitely has to be a better way. my original thought of how it would be was they would share the same animation, but like within the object its self the animation values like the position are exclusive to the object so they could differ inbetween each one.
ill include a link a picture to like further convey what i have going on here so its easier to understand. https://imgur.com/a/78q6VCI
You want to change the localPosition not the world position. This thread has a little discussion about it but basically you need to use the x, y, z you get from the Animator as an offset to localPosition.
Pseudo code:
transform.localPosition.y += animators position.y
https://forum.unity.com/threads/playing-animation-local-to-position-in-unity.53832/#post-489101
Special note: Using an animator is pretty heavy. For simple stuff like this I would suggest just scripting it.
I'm trying to make a simplified version of crazy taxi . For the first step i need to make an infinite ground . I'VE searched online but couldn't find any examples .
Can i find any example of how to do this ?
https://www.youtube.com/watch?v=rhTPxrJICVg&list=PLLH3mUGkfFCXQcNBz_FZDpqJfQlupTznd
N3K makes an infinite runner in Subway Surfers style, meaning ground coming from the back and going towards the camera.
The above link is to his tutorial series.
This is a very broad question I try to give a very simplified answer to get you going.
To create endless road you need some sort of procedural function that generates corners for your track. If you do not need to backtrack you can cook something up yourself like (in X distance turn X degrees to the right). If you do need to backtrack you need something like perlin/simplex noise that always generates the same value based on 1 or more other values. You could use total distance to get the curve in the road.
You simply keep generating the world on the fly and unload pieces of the world you don't need any more. If the player can alter the world like destroying street furniture or leaving skitmarks you need to implement a chunk system. When you backtrack and generate a cerain part of the world with your procedural function you can have permanent changes the player made in that specific part by saving and loading to the chunk. Much like Minecraft does it actually.
I just started (yesterday) using unreal engine and I need to simulate a drunk character using BPs.
I'm using two camera shakes (one for standing still and one for walking) but I want to add some "displacement" on charater when he's walking.
Basically I want to define a random float to be added to X axis location in order to make character wobble smoothly.
It will be acceptable even if there's a way to make the character move along with the camera when it's shaking.
What I tried until now is using AddActorLocalOffset and a timeline to lerp between actor's location and actor's location+offset, but both are very choppy to me.
Maybe it's a noob question but as I told I'm very new to this and need it for a quick work.
Any suggestion?
Thanks
If you are targetting physically correct model, you should use AddForce (UE Docs). But this approach would require implementation of a "drunk animation" where your character will modify it's movement animation to "compensate" this force by stepping aside etc.
Another (much more simple) approach is by using AddMovementInput. This example can be seen here: UE Aswers. In this case, you are basically simulate player's input by adding small amount of side force here and there.
I'm trying to create a new kind of rotary control with a look and feel of a real massive wheel supported on a pin, able to rotate around it's center point with a certain degree of damping, which will eventually bring the wheel to a halt. Think "wheel of fortune".
Rotary control sample project
When working with native UITableView and/or UIScrollView, they can be "flicked" in one direction and continue scrolling in that direction for a while. I know similar effect may be achieved with the animation curve.
What I'm interested in is how to calculate how far the interface element should scroll/rotate based on the distance/speed that the finger travelled. Different types of "flicks" would produce different behavior by transferring "momentum" to the wheel. Can anyone suggest examples of such calculations?
I'm particularly interested in applying the same concept of inertia to a custom rotary control as described here: Rotary control on stack overflow . The current examples, and even the convertbot app mentioned in the examples do not use inertia. The wheel simply follows the finger and snaps to pre-defined positions. I want to make a similar wheel feel like it has real mass to it, so it can be flicked and will spin in a predictable manner until coming to a smooth halt. (Think "wheel of fortune" type shows).
How can I achieve this kind of "wheel of fortune" inertia-based behavior for a rotary control that would make the control feel like it has real mass to it?
Thank you!
Implementing a fully realistic mass effect is not that trivial, and maybe requires too much work (especially for such a simple task), thus I'd ignore physic's laws (except those strictly needed) and make everything simpler.
A momentum is r x F where r is the radius and F is the force applied. Since it depends on the radius, the more you get far from the center of your wheel the greater will be the momentum. Let's ignore it and suppose that the force is tangent and is applied always at r=wheelWidth/2.
Besides, instead of computing force you may simply make it depends on the speed of the gesture (easier than computing force, since it requires mass and acceleration). Thus we can image that a faster touch will correspond to a greater momentum.
Of course, the gesture will never be perfectly horizontal or vertical, thus you can assume that every time there are two torques applied: the first corresponding to the vertical movement and the second to the horizontal.
You can get the gesture speed you may simply compute initial and final position of the touch, and divide their difference by the time elapsed.
To get the effect of slowing down you must assume that, when the wheel is moving, there is always an opposite torque. You can define it at compile time or make it dependent from the width of your wheel (such that larger wheels will slow down faster).
Now you have pretty much all that you need...good luck :)
I found that using iCarousel, it is possible to create a wheel like control with inertia/momentum!
I would like to track (if that is the right word for this) the movement of a point on an object and return the co-ordinates for the point in each frame to arrays for plotting. How would you go about doing this?
The point on the video is a certain color and so my first effort was to eliminate all other colors and change the part I wish to follow to black and everything else to white. Doing this left me with some areas in the background which are the same color but I wish to ignore them and just focus on the moving point. I do not know where to even begin with this or if I've even been trying to do the right thing so far?
Any help would be greatly appreciated! :)
Try searching for terms like 'tracking', 'morphological', 'computer vision', 'matlab'
Here's a project that I found that will probably get you started.
http://www.mathworks.com/matlabcentral/fileexchange/28757-tracking-red-color-objects-using-matlab
if your object of interests is of a certain specific color. You can always apply a color-filter. To give you a bit of a background, i was trying to track not a point on an object, but a moving object in one of the videos i have. (it was a ping-pong video and my goal was to track the ping-pong ball). My algorithm was simple and fast (as i did not want any of my filters to induce heavy computations at one single frame). The basic idea was to apply a color filter. Similar to other shape filters, if your target is of high similarity to the filter, the response will be distinctive enough for you to notice. In other words, if you minus two objects that are extremely similar, you will get 0, otherwise, it will be far greater than 0.