selecting images

[flyboy2012]

hello i am trying to select an image with an image and i was hopeing someone here new how

i found this .lua script and it has what i need for my app but i dont know how to wright it in old school lib code
here is the .lua script lines that i need to convert

Code: Select all

--Start button
if strtwndw == 0 and pointx>1 and pointx<84 and pointy>248 and pointy<272 and pad&#58;cross&#40;&#41; and oldpad&#58;cross&#40;&#41; ~= pad&#58;cross&#40;&#41; then
System.currentDirectory&#40;&#41;


appsDir = System.currentDirectory&#40;&#41;
System.currentDirectory&#40;"ms0&#58;/PSP/Game/CRWindowsPSP"&#41;
strtwndw = 1
idletm=0
end

how would i wright that?

[Noko]

> old school lib code

...what?

[flyboy2012]

the code you use in the main.c
like

Code: Select all

oslDrawImage(background);

osl stands for old school library

[Onii]

My guess is you're looking for a c tutorial. Search for one on google.

[flyboy2012]

tryed that

[J.F.]

The problem is that you aren't defining the problem accurately or completely. Until you can describe what you are trying to do properly, no one can help.

[Dariusc123456]

I think he asking for a lua to C convertion to use OSLibs .

[flyboy2012]

hello i am trying to select an image with an image

that is what i want to do how can i be more sepefic?

[J.F.]

hello i am trying to select an image with an image

that is what i want to do how can i be more sepefic?

Do you mean like a file requester that uses pictures instead of filenames? If so, you have to do that all yourself by hand. If you don't know how to do that, you should probably consult a forum that handles general programming. We don't do that here.

[flyboy2012]

a friend sent me this and yes this is what i was asking for

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#include <oslib/oslib.h>

PSP_MODULE_INFO&#40;"Desktop", 0, 1, 0&#41;;
PSP_MAIN_THREAD_ATTR&#40;THREAD_ATTR_USER | THREAD_ATTR_VFPU&#41;;
PSP_HEAP_SIZE_KB&#40;20*1024&#41;;

int initOSLib&#40;&#41;
&#123;
    oslInit&#40;0&#41;;
    oslInitGfx&#40;OSL_PF_8888, 1&#41;;
    oslSetQuitOnLoadFailure&#40;1&#41;;
    oslSetKeyAutorepeatInit&#40;40&#41;;
    oslSetKeyAutorepeatInterval&#40;10&#41;;
    return 0;
&#125;

int endOSLib&#40;&#41;
&#123;
    oslEndGfx&#40;&#41;;
    osl_quit = 1;
	sceKernelExitGame&#40;&#41;;
    return 0;
&#125;

int collision&#40;int x0, int y0, int x1, int y1, int w0, int h0, int w1, int h1&#41;
&#123;
	int hit = 0;
	
	if&#40;x0+w0 > x1 && x0 < x1+w1 && y0+h0 > y1 && y0 < y1+h1&#41;hit = 1;
	
	return hit;
&#125;

int main&#40;&#41;
&#123;
	initOSLib&#40;&#41;;//Call the function made before

	//Set item starting positions
	int item1X = 50;
	int item1Y = 50;
	int item2X = 50;
	int item2Y = 70;
	int item3X = 50;
	int item3Y = 90;
	
	//Set cursors starting position
	int cursorX = 0;
	int cursorY = 0;
	
	//Load the background and cursor
	OSL_IMAGE* BG = oslLoadImageFilePNG&#40;"background.png", OSL_IN_RAM|OSL_SWIZZLED, OSL_PF_8888&#41;;
	OSL_IMAGE* cursor = oslLoadImageFilePNG&#40;"cursor.png", OSL_IN_RAM|OSL_SWIZZLED, OSL_PF_8888&#41;;
	
	while&#40;!osl_quit&#41;//Main loop
	&#123;
		oslStartDrawing&#40;&#41;;//Start drawing
		oslReadKeys&#40;&#41;;//Read the PSP's keys
		
		oslDrawImage&#40;BG&#41;;//Draw the background
		
		oslDrawFillRect&#40;item1X, item1Y, item1X+10, item1Y+10, RGB&#40;255, 0, 0&#41;&#41;;//Draw item 1
		oslDrawFillRect&#40;item2X, item2Y, item2X+10, item2Y+10, RGB&#40;0, 255, 0&#41;&#41;;//Draw item 2
		oslDrawFillRect&#40;item3X, item3Y, item3X+10, item3Y+10, RGB&#40;0, 0, 255&#41;&#41;;//Draw item 3
		
		oslDrawImageXY&#40;cursor, cursorX, cursorY&#41;;//Draw the cursor
		
		if&#40;osl_keys->held.cross&#41;//If cross is pressed
		&#123;
			if&#40;collision&#40;cursorX, cursorY, item1X, item1Y, 10, 10, 10, 10&#41; && !&#40;collision&#40;cursorX, cursorY, item2X, item2Y, 10, 10, 10, 10&#41;&#41; && !&#40;collision&#40;cursorX, cursorY, item3X, item3Y, 10, 10, 10, 10&#41;&#41;&#41;//If the cursor is on the first item and not on the other two
			&#123;
				//Set the items X & Y to the cursors
				item1X = cursorX;
				item1Y = cursorY;
			&#125;
			if&#40;collision&#40;cursorX, cursorY, item2X, item2Y, 10, 10, 10, 10&#41; && !&#40;collision&#40;cursorX, cursorY, item1X, item1Y, 10, 10, 10, 10&#41;&#41; && !&#40;collision&#40;cursorX, cursorY, item3X, item3Y, 10, 10, 10, 10&#41;&#41;&#41;//If the cursor is on the second item and not on the other two
			&#123;
				//Set the items X & Y to the cursors
				item2X = cursorX;
				item2Y = cursorY;
			&#125;
			if&#40;collision&#40;cursorX, cursorY, item3X, item3Y, 10, 10, 10, 10&#41; && !&#40;collision&#40;cursorX, cursorY, item1X, item1Y, 10, 10, 10, 10&#41;&#41; && !&#40;collision&#40;cursorX, cursorY, item2X, item2Y, 10, 10, 10, 10&#41;&#41;&#41;//If the cursor is on the third item and not on the other two
			&#123;
				//Set the items X & Y to the cursor's
				item3X = cursorX;
				item3Y = cursorY;
			&#125;
		&#125;
		
		//Controls for the cursor
		if&#40;osl_keys->held.left&#41;cursorX -= 2;
		if&#40;osl_keys->held.right&#41;cursorX += 2;
		if&#40;osl_keys->held.up&#41;cursorY -= 2;
		if&#40;osl_keys->held.down&#41;cursorY += 2;
		
		//Exit if start is pressed
		if&#40;osl_keys->pressed.start&#41;endOSLib&#40;&#41;;
		
		//End drawing, frame .etc...
		oslEndDrawing&#40;&#41;;
		oslEndFrame&#40;&#41;;
    	oslSyncFrame&#40;&#41;;
	&#125;//End of main loop
	return 1;
&#125;

[PosX100]

Well , you really need to learn C.

You don't have to be an expert to tell if the above code posted above is
really bad ...

Here's how you can make it look prettier/efficient and , faster ...



Init & end functions return...nothing , so why you return data?

Code: Select all

void initOSLib()
{
    oslInit(0);
    oslInitGfx(OSL_PF_8888, 1);
    oslSetQuitOnLoadFailure(1);
    oslSetKeyAutorepeatInit(40);
    oslSetKeyAutorepeatInterval(10);
}

void endOSLib()
{
    oslEndGfx();
    osl_quit = 1;
    sceKernelExitGame();
} 

Dirty "collision detection" function which makes no sense with the variable names,
you can do this:

Code: Select all

static bool collide( const TVector2* v1, const TVector2* v2)
{
	return &#40; &#40; v1->x + v1->w > v2->x &#41; && &#40; v1->x <  v2->x +v2->w &#41; 
	       &&&#40; v1->y + v1->h > v2->y &#41; && &#40; v1->y <  v2->y +v2->h &#41;&#41;;
&#125;

Main loop is really messy , so ... here's a quick example of the right way doing it:

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int main ( ... )
{
	initOSLib();
	
	while ( application->isRunning() )
	{
		clear
		    begin drawing
			switch ( application->getStateStack().top() )
			{
				case GAMEPLAY:
				{
					
					draw something
					break;
				}
			}
			end drawing
			handle input ,  timers & "physics"
		present
	}
	
	endOSLib();
}

To sum everything up : learn the basics , then make games ...
(also , feel free to kill your friend :-P )

[flyboy2012]

i posted in the wrong spot please excuse my mistake