Good day,
I used to be taking part in some outdated retro video games and began questioning how did they do it again then. There the place shootemups video games the place you actually had tons of of bullets flying across the display screen. And any of them might kill you.
I’ve been studying some cocos books (outdated however nonetheless legitimate I assume), and evidently the logic is to retailer all of the bulllets on display screen in a ccArray and within the replace methodology you do a CCARRAY_FOREACH (which i suppose in cocos3dx 4.0 is now CCARRAYDATA_FOREACH).
So if in case you have say, 200 bullets, and the sport is 60 fps, it signifies that the replace methodology is checking 12000 intersections per second!! + every part else in your sport logic.
I come from a CGI background the place you progress meshes with thousents of vertices per second ar 24 fps, which is sort of regular. So I’m wondering, being new into sport growth, if 12000 intersection checks per seconds is loopy or is doable.
thanks,
R
okay, I’ve been studying abit on the subject and evidently one of the simplest ways to do it’s to make use of a pool and sphere colliders (apparently sooner than field colliders). So insteand of instanciating and destroying all of the bullets,
they’re created off display screen, after which simply transfer round and reposition out of display screen when not wanted.
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Hello there, I believe they’d of simply test the space from and object to object,
not all of the factors of a physics object in an engine.
Instance code.
float diffY = p1.y – p2.y;
float diffX = p1.x – p2.x;
return sqrt((diffY * diffY) + (diffX * diffX));
then if the space is much less then say 2 then collide, however again within the day it will of additionally been Meeting language.
That’s is attention-grabbing(It can save you some efficiency although with out making use of the sq. root)
My concern was extra about creating the sprites cases than the collisions. As a substitute of making and destroying the sprites cases, they will all be created without delay off display screen at loading time, after which simply transfer then round. As an example, when colliding, as an alternative of destroying the sprite and creating a brand new one once more, simply transfer it again off display screen till you want it.
I do one thing related with some background clouds. Create as soon as, and as soon as they go away the display screen, set the place out once more and restart.
Sure thats the enjoyable half about video games programming, you make it up as you go alongside optimisation is vital, however bear in mind it’s all pretend so when your swimming in water your probably not it’s simply graphics, however just like the matrix “Your thoughts makes it actual”, I discover it enjoyable programming and animation, it’s like a very good outdated cartoon it’s left to your creativeness.
We use many tips like hiding issues off display screen or as a result of cocos makes use of nodes you possibly can simply present or conceal node that tells the engine if its is to be drawn, utilizing one participant and altering the colure so it seems like many alternative gamers to avoid wasting reminiscence or tile maps reuse the identical tiles to create an infinite scrolling map that was the arcades favour trick should you performed MAME earlier than you possibly can see they rotate pallets and use tiles and all types of trick’s to create the phantasm. Cocos2x can pull off all these tips and them some, “On steroids”, the extra you get into it the extra enjoyable cocos is. I don’t know should you program in any respect or should you do or begin studying it is a actual enjoyable engine to play with a lot of assistance on right here the admins on listed below are incredible at serving to out too they actually helped me with my ip & photos this was one thing I missed and so they picked up on sensible. anyway get pleasure from and have enjoyable.
sure, I’ve been a software program dev for the final 15 years. I take advantage of to work within the movie CGI business the place I wrote rigging software program in python and C++ plugins when heavy realtime computation the place required.
I not too long ago swap to the sport business (bought a bit burned from working in huge movies studios).
This the sport I at the moment growing
It’s small sport that I’m utilizing as a “workshop” for future extra severe and lengthy video games.
Hay thats superior is there an finish boss? jogs my memory of – R TYPE cherished that sport. is it working on Android or IOS seems like its on home windows?
Make me need to write one now ought to solely take about 20 minutes with this engine
Cheers.
Yeah, love rtype, final resort, bomber trip… So many incredible video games.
The sport is one degree with growing problem with totally different sections that correspond to new enemies and on the finish it is going to be a closing boss sure.
I do publish wips on Instagram if you wish to take a look, seek for rudi_hammad.
The platform is PC. I’m not focusing on Mobil, at the very least with this one.
is it utilizing cocos2dx or a special engine
oh cool so you possibly can recompile for something then, good one. I mite have to interrupt out the compiler and have a go at one thing like that forgot how a lot I like all them shoot em ups, I’m so old skool I’m a scrambler , defender, sinister all them 8 bit arcade sport was fortunate after I was younger I lived on the price of Bournemouth in uk we needed to 2 pier’s and so they the place choked stuffed with all of the 80 video games after they was new, So had a misspent childhood taking part in all them arcade video games lol:).
however you might have sparked me into trying a shoot em up sport now thanks.
Cool.
A number of outdated video games maintain very properly right this moment. And it’s not all about 3d, raytracing and the final tech… Have a look at the final ninja turtles video games, it offered rather well.
Anyway, getting off matter right here. Good luck along with your tasks.
