QJ.net Game Discussion - PSP, Xbox, Wii, PS3, PSP Homebrew, and PSP Guides

BakuraMx · 04-03-2006, 07:14 PM

Hi Guys,
Well, first off I finished my beta versions of asteriods and my RPG engine complete with mini RPG. Sorry the graphics arn't transparent I have to go... "Buy" adobe photoshop or something. So I'll put that out there for anyone who wants the graphics or the code... or fun. Feel free to edit or use the code or graphics as you want. Oh, and before I forget a big thanks goes out to whoever it was that made that lua clock thing or w/e the sin/cos functions gave me what I needed to finish asteroids.

I'm going to completely re-write the asteriods game because of the lag it gets on PSP, even though all its graphics are simple drawLine functions : | and I was just wondering if anybody else found this much lag using internal graphics stuff like drawPixel and drawLine or w/e. Also what do you guys do when you find too much lag in your program? For asteroids I drew to an image instead of screen to try and get rid of some but when there's like 15 asteroids floating around it doesn't help much. Also has anyone noticed a considerable FPS speed increase when porting from lua to C? I was considering taking up porting my apps if there was. Also, this week I hope to start programming a much smoother (x,y or maybe completely 360*) tile scrolling function to use in games and such and I was just wondering if someone has already done this as part of their RPG or something. I've seen some good sidescrollers come out for lua and I'll probably end up basing some of my code around that. And finally I really want to program some emulated 3d game like quake, but I can't find any info on the subject. The closest I got was like emulated 3d graphics for QBasic... : ( can anyone recommend some information books or websites or w/e? OK thanks,
BakuraMx

**mannymix03** · 04-03-2006, 07:16 PM

well i know that if you overclock it then it should see a speed increase and also the drawline function is not the best for a game with as many objects (asteriods) on screen as you are saying...

BakuraMx · 04-03-2006, 07:17 PM

Oh and also can anyone recommend a freeware program or something that can convert graphics to transparent PNG's? Cause that'd be cool. Kthanks.

**mannymix03** · 04-03-2006, 07:21 PM

Gimp

**youresam** · 04-03-2006, 07:24 PM

Quote:

Originally Posted by mannymix03

Gimp

Gimp or Paint.NET

**mannymix03** · 04-03-2006, 07:32 PM

ahhh paint.net forgot that one....

use paint.net instead of gimp.... just my personal preferance

**will1234** · 04-04-2006, 01:52 AM

i could do some transparancies for you if you like i have photoshop, paint shop pro and GIMP

*edit* and now i have paint.net

.

**Altair** · 04-04-2006, 03:34 AM

Quote:

Originally Posted by mannymix03

... the drawline function is not the best for a game with as many objects (asteriods) on screen as you are saying...

Yeah i noticed that too. Why does the fps go down so much by just drawing 4 lines, im using it to make a selectionbox? When the box becomes bigger and bigger, the fps goes down more and more. Its really annoying.

**Psilocybeing** · 04-04-2006, 04:33 AM

I'm in the process of making something similar to asteroids, called Traveller. It uses basic 2d physics and trigonometry. I used to use drawline for the graphics, and I didn't notice any reductions in speed :O

I've never used LUA, but if other scripting languages are anything to go on you will see a huge performence boost if you were to write your program in C. You calculate vectors etc on a different thread than your render thread, although I think I remember reading that multi-threading is one target for LUA in the future.

**will1234** · 04-04-2006, 04:45 AM

ye ur traveller game looks great. especially when its on my psp :mrgreen:

04-03-2006, 07:14 PM	#1
BakuraMx Join Date: Sep 2005 Posts: 5 Trader Feedback: 0	Lua Stuff: Code and Questions Hi Guys, Well, first off I finished my beta versions of asteriods and my RPG engine complete with mini RPG. Sorry the graphics arn't transparent I have to go... "Buy" adobe photoshop or something. So I'll put that out there for anyone who wants the graphics or the code... or fun. Feel free to edit or use the code or graphics as you want. Oh, and before I forget a big thanks goes out to whoever it was that made that lua clock thing or w/e the sin/cos functions gave me what I needed to finish asteroids. I'm going to completely re-write the asteriods game because of the lag it gets on PSP, even though all its graphics are simple drawLine functions : \| and I was just wondering if anybody else found this much lag using internal graphics stuff like drawPixel and drawLine or w/e. Also what do you guys do when you find too much lag in your program? For asteroids I drew to an image instead of screen to try and get rid of some but when there's like 15 asteroids floating around it doesn't help much. Also has anyone noticed a considerable FPS speed increase when porting from lua to C? I was considering taking up porting my apps if there was. Also, this week I hope to start programming a much smoother (x,y or maybe completely 360*) tile scrolling function to use in games and such and I was just wondering if someone has already done this as part of their RPG or something. I've seen some good sidescrollers come out for lua and I'll probably end up basing some of my code around that. And finally I really want to program some emulated 3d game like quake, but I can't find any info on the subject. The closest I got was like emulated 3d graphics for QBasic... : ( can anyone recommend some information books or websites or w/e? OK thanks, BakuraMx

04-04-2006, 01:52 AM	#7
will1234 Join Date: Oct 2005 Real First Name: Will Location: Sheffield, UK Posts: 844 Trader Feedback: 0	i could do some transparancies for you if you like i have photoshop, paint shop pro and GIMP edit and now i have paint.net.

04-04-2006, 04:33 AM	#9
Psilocybeing Mushroom Man Join Date: Sep 2005 Location: UK Posts: 318 Trader Feedback: 0	I'm in the process of making something similar to asteroids, called Traveller. It uses basic 2d physics and trigonometry. I used to use drawline for the graphics, and I didn't notice any reductions in speed :O I've never used LUA, but if other scripting languages are anything to go on you will see a huge performence boost if you were to write your program in C. You calculate vectors etc on a different thread than your render thread, although I think I remember reading that multi-threading is one target for LUA in the future. __________________ [URL=http://www.othala.co.uk]Othala[/URL] [B]o[/B] [URL=http://www.entheogendefencefund.org.uk/]Save the shroom![/URL] [CENTER][URL=http://www.othala.co.uk/travellerBlog][IMG]http://www.othala.co.uk/graphics/travBanner.png[/IMG][/URL][/CENTER] Last edited by Psilocybeing; 04-04-2006 at 04:37 AM..

04-03-2006, 07:17 PM	#3
BakuraMx Join Date: Sep 2005 Posts: 5 Trader Feedback: 0	Oh and also can anyone recommend a freeware program or something that can convert graphics to transparent PNG's? Cause that'd be cool. Kthanks.

04-04-2006, 04:45 AM	#10
will1234 Join Date: Oct 2005 Real First Name: Will Location: Sheffield, UK Posts: 844 Trader Feedback: 0	ye ur traveller game looks great. especially when its on my psp :mrgreen:

QJ.net Game Discussion - PSP, Xbox, Wii, PS3, PSP Homebrew, and PSP Guides

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