java - Bx2D body Sprite synch -

-

seeing how box2d bodies cannot resized, have problem bodies , animated sprites.

here's situation have no doubt not unique: sprite's dimensions change during different motions attacking, walking, jumping. seeing how use box2d body collision detection can cause quite problem. far thought of 3 ways solve issue.

1- not use box2d bodies collision detection , use them object's physical behavior

2- delete , recreate body before each render. or on animation change.

3- trying recheck collision on bodies see if collides sprite itself. act.

and here's problem have each of these solutions.

1- way makes using box2d whole seem rather absurd, i'll using not one, 2 world logic , trying keep them in sync. seems big headache.

2- doesn't optimized, doubt can make objects pop in , out of existence in physics world without side effects.

3- i'm not sure how or if can done, option 1 require more advice on. cause difficulties in long run, or cause conflicts in physics.

please let me know if there efficient way solve , or if of above solutions worth working on.

my thanks

edit: more of general question since still don't have proper graphics game i'm writing, here's practice material:

walking enter image description here waiting (standing) enter image description here attacking enter image description here

a body can have multiple fixtures, can add fixtures each state body. if make them 0 density should not affect physics behavior of body. keep in mind though, @ least 1 fixture on body should non-zero density - make 1 fixture act main fixture, has density give body mass.

if need detect when these fixtures touching something, make them sensor fixtures, , use contact listener keep track of other things touching. contact listener give callbacks of fixtures regardless of state character in, , each state keep list of things fixtures state touching.

if need fixtures have physical interaction when state active, above in begincontact contact->setenabled(false) if contact fixture not in active state.


Comments

Post a Comment

Popular posts from this blog

C# random value from dictionary and tuple -

-
i have following code, , need random item contains string "region_1" dictionary. public static dictionary<int, tuple<string, int, currencytype>> itemarray = new dictionary<int, tuple<string, int, currencytype>>() { { 0xb3e, new tuple<string, int, currencytype>("region_1", 1500, currencytype.fame) } }; public static int generateitemid(string shopid) { var generateditem = itemarray.elementat(new random().next(0, itemarray.count)).key; } how select this? it's not possible efficiently... first create static random @ class level... prevent non-random behaviour if run query on short period of time... (it's seeded discrete clock) static random rnd = new random(); then: var item = itemarray.values .where(t => t.item1 == shopid) .orderby(_ => rnd.next()) .firstordefault()
Read more

cgi - How do I interpret URLs without extension as files rather than missing directories in nginx? -

-
so i'm trying install zoneminder , have run under nginx, has few compiled files need run using fast-cgi. these files lack extension. if file has extension, there no issue , nginx interprets file , return 404 if can't find it. if has no extension, assume it's directory , return 404 when can't find sort of index page. here have now: # security camera domain. server { listen 888; server_name mydomain.com; root /srv/http/zm; # enable php support. include php.conf; location / { index index.html index.htm index.php; } # enable cgi support. location ~ ^/cgi-bin/(.+)$ { alias /srv/cgi-bin/zm/; fastcgi_pass unix:/run/fcgiwrap.sock; fastcgi_param script_filename $document_root/$1; include fastcgi.conf; } } the idea is, under cgi-bin directory goes through fastcgi pipe. any idea on howi can fix this? upon closer inspection, realized zoneminder has 2 cgi sc...
Read more

.htaccess - htaccess convert request to clean url and add slash at the end of the url -

-
ok , searched more 4 days , more 20 posts here in stach or in websites without kind of success first here htaccess file rewriteengine on rewriterule ^([a-za-z0-9_]+)/?$ index.php?page=$1 [nc] rewriterule ^([a-za-z0-9_]+)\/([a-za-z0-9_]+)\/?$ index.php?page=$1&action=$2 [nc] i tried many codes 1 worked me can call request , works me www.example.com/pagename => www.example.com/index.php?page=pagename here questions , please provide me information "in detail" understand code well 1- how convert request automatically www.example.com/index.php?page=pagename www.example.com/pagename 2- if tried add slash @ end shows me page without images or styling mean www.example.com/pagename => works www.example.com/pagename/ => doesn't work that's :) for first part need 301 rule this: rewritecond %{the_request} /index\.php\?page=([^\s&]+) [nc] rewriterule ^ /%1? [r=301,l] for second part use absolute path in css, js, images files r...
Read more