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This is great news! Can a kind developer also create a tutorial for creating PONG? I'm strictly into developing games. ANd I have made alot of flash games. Learned c++ in Highschool and will conitue to learn in college which I'm currently attending. I also have a small team assembled that wants to start programming games. Please any help on a PONG or any tutorial will be terrific.
If you know C++ and you are a game programmer, why do you even need a tutorial for pong? Seems pretty straight forward to me. After having read the tutorials, you know how to load an image and display it to the screen, how to display text to the screen, and how to accept user input.. seems like that would be all you need to make Pong :-\Zitat:
Zitat von OomSha
whats a screenblit(0, 0, int width, int height, *variable here, int posX, int posY);for if everytime i try to call it and i dont get any errors but it just wont comply because its undefined? ive seen it used before but i just cant seem to load any .png image using it
EDIT: i just tried to use Alphablitimagetoscreen(.. .); and it flashes my backrounds bottom half and my small curosr image and then it flashs my entire backround and cursor then it goes all black and freezes heres my blitting code.
thast where im having problems, i cnat seem to get hte backround not to just flash the image and oto display it forever and dsipaly my cursor foreer as wellCode:char buffer[200];
Image* mainBG;
Image* cursor;
sprintf(buffer, "data/MAIN.PNG");
mainBG=loadImage(buffer);
cursor=loadImage("data/CURSOR.PNG");
if (!mainBG) {
printf("Image Failed to Load, Contact [email protected]");
} else {
int x = 0;
int y = 0;
sceDisplayWaitVblankStart();
while (x < 480) {
while (y < 272) {
blitAlphaImageToScreen(0, 0, 480, 272, mainBG, x, y);
y+= 272;
}
x+= 480;
y = 0;
}
flipScreen();
}
int cursorx = 200;
int cursory = 136;
sceDisplayWaitVblankStart();
blitAlphaImageToScreen(0, 0, 10, 16, cursor, cursorx, cursory);
flipScreen();
SG57 - try putting your graphics in the same folder as your source code so that you don't need any path information (just try that as a test - I had problems with graphics in sub folders).
BTW - what are the nested while loops for - can't see they actually achieve anything??
One thing I've noticed - blitAlphaImageToScreen seems to take care of screen clipping for you, where as blitImageToScreen doesn't, so take care when using that.
True but I always try and find a tutorial when I first attempt something different. I guess I'll try this one without a tut :P I'm used to being babied at the start of new things. :mrgreen:Zitat:
Zitat von Yeldarb
ok, but i used blitAlphaImageToScreen for both of them and i getting a flashing sequence and the loop is just there for later use, this is just the loading of the backround image for now itll have more functionality laterZitat:
Zitat von Fluke
EDIT
moving the imags to a difrferent directory doesnt change anytbigna dn i fixed the code up a bit but i still get 1/2 flash 5 times and then whole flash 5 tiems and then black screen, ill just give you all my stuff, i dont kno how to blit an image without it flashing or anything unless its a backround and need way more than a bakcround
SG57 - can you post a complete example of your code (eg the full code you're trying to compile) and I'll take a look for you. Don't worry about images you're using etc, just paste the code in a reply.
When I go to run the toolchain script, "./toolchain.sh", it says please make sure automake is installed, and I cannont proceed. Anyone PLEASE help me?
never ind i fixed it, just had to blit them together and walaa, and for now on im posting some of my problems in the C/C++ Help Thread soZitat:
Zitat von Fluke
hi im am getting errors in my script the scripts hereerrors areZitat:
#include <pspkernel.h>
#include <pspdisplay.h>
#include <pspctrl.h>
#include <stdio.h>
#include <psppower.h>
#include "graphics.h"
PSP_MODULE_INFO("Backgrou nd Changer",0, 1, 1);
#define RGB(r, g, b) ((r)\((g)<<8)\((b)<<16))
/* Exit callback */
int exit_callback(int arg1, int arg2, void *common) {
sceKernelExitGame();
return 0;
}
/* Callback thread */
int CallbackThread(SceSize args, void *argp) {
int cbid;
cbid = sceKernelCreateCallback(" Exit Callback", exit_callback, NULL);
sceKernelRegisterExitCall back(cbid);
sceKernelSleepThreadCB();
return 0;
}
/* Sets up the callback thread and returns its thread id */
int SetupCallbacks(void) {
int thid = 0;
thid = sceKernelCreateThread("up date_thread", CallbackThread, 0x11, 0xFA0, 0, 0);
if(thid >= 0) {
sceKernelStartThread(thid , 0, 0);
}
return thid;
}
int main(void) {
scePowerSetClockFrequency (333, 333, 1666);
SetupCallbacks();
initGraphics();
SceCtrlData pad;
int i;
int selComponent = 0;
char filler[10];
int bgR = 0;
int bgG = 0;
int bgB = 0;
Color highlightColor = RGB(200, 200, 200);
Color dimmedColor = RGB(100, 100, 100);
Color shadowColorH = RGB(55, 55, 55 );
Color shadowColorD = RGB(55, 55, 55 );
while(1) {
sceCtrlReadBufferPositive (&pad, 1);
if(pad.Buttons & PSP_CTRL_UP) {
if(selComponent > 0) {
selComponent--;
}
for(i=0; i<10; i++) {
sceDisplayWaitVblankStart ();
}
} else if(pad.Buttons & PSP_CTRL_DOWN) {
if(selComponent < 2) {
selComponent++;
}
for(i=0; i<10; i++) {
sceDisplayWaitVblankStart ();
}
if(pad.Buttons & PSP_CTRL_RIGHT) {
switch(selComponent) {
case 0:
bgR++;
break;
case 1:
bgG++;
break;
case 2:
bgB++;
break;
default:
//SHOULD NEVER EXECUTE
break;
}
} else if(pad.Buttons & PSP_CTRL_LEFT) {
switch(selComponent) {
case 0:
bgR--;
break;
case 1:
bgG--;
break;
case 2:
bgB--;
break;
default:
//SHOULD NEVER EXECUTE
break;
}
}
fillScreenRect(RGB(bgR, bgG, bgB), 0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
sprintf(filler, " RED: %i", bgR);
if(selComponent == 0) {
printTextScreen(11, 10, filler, shadowColorH);
printTextScreen(10, 10, filler, highlightColor);
} else {
printTextScreen(11, 10, filler, shadowColorD);
printTextScreen(10, 10, filler, dimmedColor);
}
sprintf(filler, "GREEN: %i", bgG);
if(selComponent == 1) {
printTextScreen(11, 20, filler, shadowColorH);
printTextScreen(10, 20, filler, highlightColor);
} else {
printTextScreen(11, 20, filler, shadowColorD);
printTextScreen(10, 20, filler, dimmedColor);
}
sprintf(filler, " BLUE: %i", bgB);
if(selComponent == 2) {
printTextScreen(11, 30, filler, shadowColorH);
printTextScreen(10, 30, filler, highlightColor);
} else {
printTextScreen(11, 30, filler, shadowColorD);
printTextScreen(10, 30, filler, dimmedColor);
}
flipScreen();
for(i=0; i<1; i++) {
sceDisplayWaitVblankStart ();
}
}
return 0;
}
main.c:59 error: stray '\' in program i get this error on lines 59,60,61,62 and line 115 and on line 59 i get called object '200' is not a function
and line 60 called object '100' is not a function and on lines 61 and 62 i get called object '55 is not a function.
and on line 115 i get error: called object 'bgR' is not a function
and on lines 152 i get these
main.c:152:2: warning no new line at the end of file
main.c:152: error: syntax error at end of input
i have files framebuffer.h & frambuffer.c , graphics.h & graphics.c i also have my make file copied exactly as mentioned on tutorial 5
thanks
_TOM.
"scePowerSetClockFrequenc y (333, 333, 1666);" should be "scePowerSetClockFrequenc y (333, 333, 166);" if you set it at 1666 I don't think that can be too good for your psp
Those aren't backslashes, they're pipes "|" ([SHIFT]+'\')Zitat:
#define RGB(r, g, b) ((r)\((g)<<8)\((b)<<16))
Edit: And yeah, it's 166 not 1666 (I'm not sure what setting that to 1666 will do... if it will even let you... but it could break your PSP).
i fexed it anyway i released my clock frequency error :D thnx i didnt notice they were | not \ thnx
btw are you making any more tutorials on making a simple game?
_TOM.
I'm planning on writing more tutorials, but I don't now about writing one on making a simple game. You should (after having read the first five) have enough knowledge to piece together your own game.
thanks yel, every tut is comprehensicve and helpful. I am having one problem insignificant of a thread, and i was hoping that you guys could help me out. I have tried everything (even looking through the OG Keringham book) to find things on time. I am well aware of all the time functions and all that it can give me, but alas, it only goes down to seconds. is there any way to tell the psp to do something, say, every 1/4 of a second without measuring processor speeds and doing humgous math?
much thanks.
Seriously dude...great work on these...i looked on wiki for an example but totally missed out on the svn update kick. so i got nowhere...this set me on the right track. now starting to develop appz...any chance i could convince you to write an audio tutorial ? one would be greatly appreciated. or just basic code would help too
cynex - audio tutorial, probably not, code... just wait a while, I've got something brewing, but I can't tell you what it is :P
orphan frequently - you could use vWaitBlank i suppose, it pauses the program for 1/60th of a second, so 15 vWaitBlanks would be a quarter of a second. (I believe you could use threading so that this doesn't interfere with the main operation of your program if you don't want it to)
awesome cant wait to see what'sa brewin :) Cheers
also, add a { bracket to the edn of the line 152, or your functions or oloops in the main you didnt close right, too busy to luckZitat:
Zitat von _TOM
hey cygwin experts, i need help, i installed cygwin from my own way that i saw on a website to reserve memory since there are some things in the devel category u dont use (java for example?), so i did what the website siad nad it worked! but now i need subversion, i downloaded them and insatlled them as directed but im still getting an error saying install subversion (svn), when tryin to run toolchain.sh, so what should i do? post a tut or soemthing please
Thank you very much Yeldarb =)
Very good tutorial, well thought out. Looking forward to the next one, but until then, this is an immensely useful introduction... Going to ravage some of the sources from other homebrew projects now...
Only problem I experienced during the whole thing was that I had an -
undefined reference to 'initGraphics()'
undefined reference to 'flipScreen()'
in compiling projects 4 and 5.
I patched it up by '#include "graphics.c", but I don't know why it wasn't linked automatically... Either way, I searched around online, couldn't find any specifically related errors, so chances are I just stuffed it up somewhere along the way !
Once again though, thank you very much ! ^_^
-Edit-
Should also note, for other developers etc, if you want to clean up the code and only see your main functions, seperate all the callback threads into their own seperate header file (callback.h) and just add to the top of your c file "#include "callback.h"...
This frees up a few good dozen lines of code, letting you see YOUR project and gets rid of the technical fluff
or just make on source file named functions and in the main.c just call them as you want, thats what i did and it saves 100s of lines of code and makes it much cleaner and more organized, just add hte right #includes at the top
The reason is because it is not a library, just a small little file o' functions someone made using libpng, so it could not be linked, just included. :)Zitat:
Zitat von Smerity
I've downloaded the psptoolchain, but no toolchain.sh :(
Did you... extract it?Zitat:
Zitat von teknogeek1300
Yes, but it as verry confusing haveing to extract the other file aswell. But I got it :)
NOTE: Lesson 3 and 4 are bar far HORRIBLE tutorials, and no one on this for is a help what so god dam ever. I couldn't get a stait answer out of you people If slapped you.
dude. seriously. chill the f*** out. this guy spent time out of his day to teach you something and just because it wasnt dumb enough for you to understand you flame him ? i GOT TONS from all of the lessons...and you really need to learn some respect.
Yeldarb...props man. i know c quite well on the windows aspect of things and looking through your stuff gave me a quick edge to port it into cygwin...cheers.
p.m. me as well when this 'related' audio thing comes to play...im interested to see what you're referring to.
I wasn't flaming him I messed my wording up in that last sentance. I was mainly trying to point out that 90% of the people on this forums won't give a strait answer.
and nobody OWES you an answer...telling someone their article is horrible certainly wont get you any help. and if your really having this much difficulty and are that frustrated with it...take a course...because this is some pretty basic sh** so far. and he told it on a very straight level so that anyone could understand. i did...quite well...in fact it was a little too easy...but now ive ported what i know into something applicational. if you dont understand C then thats your fault...go back to highschool.
Lesson 3 is the bad one. It wants you to mix with lesson 2 code, and several times fails to clealy mention important details.
i dont think so...thats quite rudamentary stuff...wait on keypress...display hello world.
ive followed these through and am at the point of my own demo a brewin in a matter of hours.
proof ?
http://events.streamlogics.com/chrishodge/cynex-psp.jpg
thanks again to Yeldarb and Fanjita to make this all possible...
but kid...seriously...you want help be polite...im gonna go out on a limb here and maybe look like and idiot but still ask : anyone know where to find an audio tutorial ? Im at the point of the objects rotating and the backdrop moving around and such....just need some help firing up an audio file on queue....any help would be appreciated and i give full credit where its due....
grr.....im about to blow my top if u post it the right way...............atleast juyst ell them how to do it dont just do it for them they dont elarn anythin g and its harder to get started on ur own
ok audio tut is a descent question, you need SDL_mixer and make sure you didnt install ogglib orelse u might be f***ed, anyway, get hte SDL and SDL_Mixer libs from svna dn inside them once u donwload them has an example source wiht audio in it so u can learn at ur own pace and dont rely on others to do it for u but u learn from others code and dont copyZitat:
Zitat von cynex
I wouldn't mind one either^
thanks SG57 ... SDL and SDL_Mixer...im guessing an svn call will solve what i need then ? ...and at this point nobody is ripping off code...its all learning applicationary purposes and then taking it on your own...know which file specifically i should be looking for ?
ya here u owe me big if i give u this but ok, it the entire SVN call list and it has the readme there too so here ya go an d ur welcome! http://svn.ps2dev.org/listing.php?re...%2F&rev=0&sc=0 its in the trunk i belive,i got it a while ago, o and im gonna mke this game that youll die for, itll be just like a joystick kind of game ckilling game, dont ask questions but itll be sweet :icon_coolZitat:
Zitat von cynex
thanks :) ive poked around in here a little bit after Yeldarb mentioned it in his svn calls for pnglib, wanted to see whats available...but if all the info is here i need then cheers ... i wont be asking anymore questions :) and cool...a buddy has promted me to fire up a 2d game engine shooter like megaman, and is going ahead with character sketches. maybe we'll trade off at one point.
uhm...dude...i dont mean to pry at your style whatsoever...but i just peeked at your chopper code...and uh...
} else {
int x = 0;
int y = 0;
sceDisplayWaitVblankStart ();
while (x < 480) {
while (y < 272) {
blitAlphaImageToScreen(0, 0, 480, 272, backW, x, y);
y+= 272;
}
x+= 480;
y = 0;
}
flipScreen();
this is a redundant call...and an obvious copy of The tutorial code...if youre displaying a full size image you dont need to put it inside 2 while loops...just take out the whole thing and do this :
} else {
sceDisplayWaitVblankStart ();
blitAlphaImageToScreen(0, 0, 480, 272, backW, 0, 0);
flipScreen();
Edit : this is not a flame on you...im not trying to point something out other than you could do this alot simpler (and more stable to add) method of doing this.