A-star | A * search algorithm for Cocos Creator | Game Engine library
kandi X-RAY | A-star Summary
kandi X-RAY | A-star Summary
A* search algorithm for Cocos Creator.
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Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of A-star
A-star Key Features
A-star Examples and Code Snippets
Lines of Code : 174License : Permissive (MIT License)
Copyfunction AStar(s, e, row, col, inputGrid) {
const Row = row;
const Col = col;
const start = s;
const end = e;
const path = [];
const isValid = (i, j) => i >= 0 && j >= 0 && i < Row && j < Col;
i def a_star_search(graph, start, end):
frontier = PriorityQueue()
frontier.put(vec2int(start), 0)
path = {}
cost = {}
path[vec2int(start)] = None
cost[vec2int(start)] = 0
while not frontier.empty():
current = front def add_stararg(self, a):
self._consume_args()
self._argspec.append(
gast.Call(
gast.Name(
'tuple', ctx=gast.Load(), annotation=None, type_comment=None),
args=[a],
keywords=())) Community Discussions
Trending Discussions on A-star
QUESTION
I'm working on a 2D game in Unity and am using the A* Pathfinding Package from Aron Granberg.
Everything appears to be working fine. AIPaths are being generated and AI Agents are navigating from point to point and avoiding obstacles as expected. It's fine except for one thing.
The position.z of the AI Agent is incorrect.
The spawn origin of the AI Agent has a z of 0, and the target point has a z of 0, yet the AI Agent's z fluctuates between -9 and -1 as it traverses the path. The path itself appears to have a z position of 0 at each waypoint.
I haven't modified the code in the package at all and just followed the documentation when setting it up for 2D.
Any ideas what could be causing this?
NOTE: I haven't included a screenshot of it, but the prefab that is being spawned in as the AI Agent has a transform position of (0,0,0).
The A-star pathfinder object:
The AI Agent object (note that the Z pos is not 0):
The spawn point object that sets the spawn for the AI agent:
The destination target object that the AI Agent is heading to:
...ANSWER
Answered 2021-Jun-14 at 02:09In case anyone else runs into this problem.
The fix was to add a Rigidbody2D to my AI Agent and set the gravity scale to 0.
Even though my game doesn't use Unity's physics system for movement and the Astar package can move AI agents by transform, for some reason it requires a Rigidbody to keep the Z position at 0.
I'm still not really sure why this solves the problem because, when I was debugging the third-party Astar code, it always returned nextPosition values with a Z position of 0 yet the actual position that the AI Agent was updated to had varying Z positions...
If you have more info, leave a comment and I'll add it to the answer.
QUESTION
I have a form component in React that I use to send data to a pg database.
This is my form script :
...ANSWER
Answered 2021-Jun-07 at 20:37Instead of keeping same state (i.e rating value) in two components, keep it in form component and pass it as prop to the Rating component.
Rating component will notify the parent(Form) component whenever the value gets changed by calling a function. This is called Lifting state up.
Here is the code for Rating component which gets rating and onRatingChange props from the form component. onRatingChange will be called with newValue from inside onChange function.
QUESTION
I made a sidebar and when I need to scroll down (i just putted some "< br >" on html to test the scroll) the sidebar ends at some point, I want to be able to see the background until the bottom of the page
How can I do that? Here is a quick gif too see what is happening: https://i.gyazo.com/f08b7fbf0592a89bc08da7e2625a86f1.mp4
This is the CSS
...ANSWER
Answered 2021-May-31 at 19:05Any reason, you're reducing the sidebar height by 59px. Removed 59px min-height: calc(100vh - 59px); and now the sidebar is reaching the full height of the viewport.
QUESTION
I am trying to create a star widget. I have a state array for each star, but when I click one of the stars, ALL of the stars set themselves to that state. I am very lost on this, please halp. I have added a lot of debugging logs. The moment I set newStars[i] = currentStar;, the entire newStars array gets updated, but I'm failing to see why.
Also, here is the code pen link: https://codepen.io/trismi/pen/zYZpvQq?editors=1111
HTML:
...ANSWER
Answered 2021-May-31 at 17:26The problem is here:
QUESTION
I have a code that is used to select certain elements, the code works great when you onSelect and it shows the right option value. The problem is I am not sure how to show the selected option when we search a value onSelect of the dropdown then it's not working.
Here is my Jsfiddle
...ANSWER
Answered 2021-May-28 at 13:36add click event to the .asIconPicker-selector-popup and add a condition inside the method to check the source element from which a click triggered.
QUESTION
I have a value res.rating.value and I want to show font awesome stars for this value. Like if the value is 2 then 2 stars will show in the div. I have the following code but whenever I run it the appendChild function shows the error failed to execute parameter 1 is not of type 'Node'
...ANSWER
Answered 2021-May-27 at 16:06After some research, I tried the following code and it worked
QUESTION
When I run my code it throws a segmentation fault and I have tried rewriting the code several times. Still to no avail, it won't even run. The segmentation fault happens as soon as my program is launched. What it's supposed to do is print a path on screen using the ncurses library in Linux, from the given coordinates. Here is the problematic snippet with the lines where gdb said the segmentation fault was, also it (snippet) reproduces the problem.
EDIT: This will help explain what I'm trying to do, but using dynamic arrays. Breadth First Search
EDIT 2: The variable frontier is supposed to keep track of the X and Y values at a specific index. The add_neighbors function is there to add all four neighbors (providing they aren't already added) to the frontier and came_from arrays.
frontier[index][0] is X value.
frontier[index][1] is Y value.
The before the first while loop I set the start position x1 and y1. During the first while loop, it increments getting the new coordinates from the frontier, then processing and adding to came_from array.
For example:
(x1,y1) (x1+1,y1)
(x1,y1+1) (x1+1,y1+1)
(x1,y2) (x2,y2)
I'm trying to get from (x1,y1) to (x2,y2). Sure hope that explains it better. What I'm trying to implement is a Breadth First Search (BFS) algorithm. Using two arrays, one is frontier (keeps track of visited positions) and came_from (keeps track of X and Y the path from x1,y1 to x2,y2). Updated the code to reflect the first answer. Plus added a comment to explain where the error might be, not really sure but I've been debugging it. It looks like the came_from array never gets set with x and y.
The Code:
...ANSWER
Answered 2021-May-23 at 17:26Some of the allocation sizes are incorrect:
frontier = malloc(sizeof(frontier) * MAXHEIGHT * MAXWIDTH);should be
QUESTION
I have an online course with a difficulty rating that is displayed as a variation of the following:
...ANSWER
Answered 2021-May-18 at 10:43A couple of things, first the use of a here doesn't quite work. s are designed to be linked to interactive elements (inputs).
If this is display only (i.e. you cannot cast a vote on the difficulty) then the answer is simple:
QUESTION
I am trying to traverse html using jQuery .
You can see the html code in the image. when I hover the mouse over a star the code is triggered
the code finds the span two levels up using parent().parent(). and then gets all the fa-star elements using jquery "find" method. when I loop the code I expect the loop to print 5 items. but it prints about 24 of them.
what can be the cause of this behaviour?
This is the javascript code I use,
...ANSWER
Answered 2021-May-16 at 14:44As you see there are only 5 indices used. They occur multiple times in your log. It seems like your mouseover-handler is triggered multiple times. You will also be able to verify this by adding a log to your mouseover-handler outside of the loop.
Make sure, that the plugin that you are using (or your code) is not triggering mouseover internally and that the hovered elements have the size that you are expecting. Of course also make sure your handler is not bound multiple times.
EDIT:
The code that you provided seems to work perfectly for me (even though there is a semicolon missing). Take a look at this fiddle. Do you expect a different behavior?
(I can only provide a fiddle with code in the answer, so here is your code again with added semicolon. As stated it seems to work properly)
QUESTION
I'm new to Laravel coming from PHP core I'm trying to load data from the database in my header.blade.php which is included in app.blade.php.
Do I have to return the header data variable in every view? Do I have to write the same code in every controller function which is returning a view?
If there is another way to achieve that please let me know.
Currently, I have loaded data to my dashboard but it is only available to the dashboard. Please help me out.
...ANSWER
Answered 2021-May-05 at 11:38I often just inline this stuff for small projects.
Your query is a bit off as well. You are getting all Users but only with a certain ID. This can be rewritten as:
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