<https://lh6.googleusercontent.com/-K5u_LGOXmLk/U0HjTLBYVtI/AAAAAAAAAAc/LJ-fIy-Rqo4/s1600/cannot+enlarge+memory.JPG>
Thanks for the help. I'm not sure if I really fixed the issue or just
created a more dominant one.
>From running the new generated page I get* "Cannot enlarge memory arrays.
Either (1) compile with -s TOTAL_MEMORY=X with X higher than the current
value 16777216, (2) compile with ALLOW_MEMORY_GROWTH which adjusts the size
at runtime but prevents some optimizations, or (3) set Module.TOTAL_MEMORY
before the program runs."*
Also, here's what my code looks like now.
#include <stdlib.h>
> #include <SDL/SDL.h>
> #include <emscripten.h>
>
> void renderStuff() {
> SDL_Init( SDL_INIT_VIDEO );
> SDL_Surface* bitmap = SDL_LoadBMP("bat.bmp");
> SDL_Surface* screen = SDL_SetVideoMode( 640, 480, 0,
> SDL_HWSURFACE | SDL_DOUBLEBUF );
>
> // Part of the bitmap that we want to draw
> SDL_Rect source;
> source.x = 24;
> source.y = 63;
> source.w = 65;
> source.h = 44;
>
> // Part of the screen we want to draw the sprite to
> SDL_Rect destination;
> destination.x = 100;
> destination.y = 100;
> destination.w = 65;
> destination.h = 44;
>
> SDL_BlitSurface(bitmap, &source, screen, &destination);
>
> SDL_Flip(screen);
> }
>
> void one_iter() {
>
>
> SDL_Event event;
> bool gameRunning = true;
>
>
> if (SDL_PollEvent(&event))
> {
> if (event.type == SDL_QUIT)
> {
> gameRunning = false;
> }
> }
>
> renderStuff();
>
> }
>
> int main(int argc, char **argv)
> {
>
> emscripten_set_main_loop(one_iter, 60, 1);
>
> return 0;
> }
>
> Now, I imagine it's trying to take an unusual amount of memory for the
type of things it's intended to do but the browser won't let it so
everything runs good. However using the browser to fix my bug is obviously
the kind of thing that will backfire sooner or later. So now I'm wondering
what is causing it to attempt to take up more memory than it needs and if
the unresponsive script issue really went away or is just not able to
manifest on account of the newer issue.
On Sunday, April 6, 2014 1:56:33 PM UTC-5, Dave Nicponski wrote:
>
> I've not used SDL, but aren't you grabbing control of the event loop here
> in your while(gameRunning) { } loop? Each main loop invocation is
> happening in the browser's (single) UI thread. If you don't return control
> to the browser (by exiting the one_iter() function) then the browser will
> freeze.
>
> Maybe try structuring your code like this:
>
> void oneIter() {
> // Stuff currently inside your while() { } block
> if (!gameRunning) {
> // Stuff currently after your while() { } block, like SDLQuit() and
> friends
> }
> }
>
> int main() {
> // Setup code, stuff currently before your while() { } block
> emscripten_set_main_loop();
> }
>
>
> Now the oneIter() function will be invoked by the browser in a loop,
> yielding back to the browser each loop iteration.
>
> -dave-
>
> On Sunday, April 6, 2014 12:49:51 AM UTC-4, [email protected] wrote:
>>
>>
>> <https://lh3.googleusercontent.com/-FrjglpaDPRs/U0DZZ1cTn9I/AAAAAAAAAAQ/29x4jM-0S_s/s1600/unresponsive%2Bscript3.JPG>
>> I'm currently trying to get this tutorial I've found
>> <http://www.aaroncox.net/tutorials/2dtutorials/sdlsprites.html>on SDL to
>> work with Emscripten but I think I might be running into problems with the
>> browser's event model:
>>
>> Here's the code:
>>
>> #include <SDL/SDL.h>
>>> #include <emscripten.h>
>>>
>>> const int WINDOW_WIDTH = 640;
>>> const int WINDOW_HEIGHT = 480;
>>> const char* WINDOW_TITLE = "SDL Start";
>>>
>>> void one_iter() {
>>> SDL_Init( SDL_INIT_VIDEO );
>>>
>>> SDL_Surface* screen = SDL_SetVideoMode( WINDOW_WIDTH,
>>> WINDOW_HEIGHT, 0,
>>> SDL_HWSURFACE | SDL_DOUBLEBUF );
>>> SDL_WM_SetCaption( WINDOW_TITLE, 0 );
>>>
>>> SDL_Surface* bitmap = SDL_LoadBMP("bat.bmp");
>>>
>>> // Part of the bitmap that we want to draw
>>> SDL_Rect source;
>>> source.x = 24;
>>> source.y = 63;
>>> source.w = 65;
>>> source.h = 44;
>>>
>>> // Part of the screen we want to draw the sprite to
>>> SDL_Rect destination;
>>> destination.x = 100;
>>> destination.y = 100;
>>> destination.w = 65;
>>> destination.h = 44;
>>>
>>> SDL_Event event;
>>> bool gameRunning = true;
>>>
>>> while (gameRunning)
>>> {
>>> if (SDL_PollEvent(&event))
>>> {
>>> if (event.type == SDL_QUIT)
>>> {
>>> gameRunning = false;
>>> }
>>> }
>>>
>>> SDL_BlitSurface(bitmap, &source, screen, &destination);
>>>
>>> SDL_Flip(screen);
>>> }
>>>
>>> SDL_FreeSurface(bitmap);
>>>
>>> SDL_Quit();
>>> }
>>>
>>> int main(int argc, char **argv)
>>> {
>>> emscripten_set_main_loop(one_iter, 60, 1);
>>>
>>> return 0;
>>> }
>>>
>>
>>
>> I've read the Wiki on emscripten browser
>> environment<https://github.com/kripken/emscripten/wiki/Emscripten-browser-environment>so
>> I figured I had to use *emscripten_set_main_loop
>> *to make SDL_Quit() work and give control back to the browser and keep
>> it from freaking out. But as you can see it didn't work. Can anyone point
>> to me what I'm doing wrong? Any guidance here would be appreciated.
>>
>
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