OpenEuphoria

1. Eu4 Upgrade - An update.

• Posted by ssallen Feb 19, 2013
• 1606 views

Bravo, guys. I literally unzipped the package, updated my path variables and ran my current project with over 12 _substantial_ includes and around 25k lines of code. Worked like a charm with no code changes. Obviously some cleanup needs to occur to make sure everything is working the Eu4 way but not a single complaint from the interpreter.

As far as speed goes, and this is just testing my drawing routines, eu3 took about 55ms and eu4 takes about 56-57ms. A little bit slower but once its ran through euc I am getting faster compiled code then under eu3s translater. Has someone been optimizing euc? I am getting 3-5ms faster on all operations using the same stale old watcom compiler. Also, big props for the interface changes.

Minor note, the initial launch of a eu app is substantially slower under eu4. Maybe this is a known issue, just thought I would kick it out there. The same app loads almost instantaneously under eu3.1 but it takes nearly 4 seconds under eu4. Probably just the result of progress but it does slightly feel like I just launched a java app... just teasing, kinda. :)

That aside, I am quite pleased with Eu4 so far.

Just to add some content here, what is the best way to Eu4-ify some of these old wrappers that use hundreds or thousands of global constants. I really want to beat the SDL and OpenGl wrappers into shape. However, they all look like this:

global constant GL_VERSION_1_1 = 1  
global constant GL_EXT_abgr = 1  
global constant GL_EXT_bgra = 1  
global constant GL_EXT_packed_pixels = 1  
global constant GL_EXT_paletted_texture = 1  
global constant GL_EXT_vertex_array = 1  
global constant GL_SGI_compiled_vertex_array = 1  
global constant GL_SGI_cull_vertex = 1  
global constant GL_SGI_index_array_formats = 1  
global constant GL_SGI_index_func = 1  
global constant GL_SGI_index_material = 1  
global constant GL_SGI_index_texture = 1  
global constant GL_WIN_swap_hint = 1  
 
-- .... repeat for 800-1000 lines 

I understand global constants are frowned upon in Eu4. What is the proper way to update these to proper eu4?

Sorry for the long post!

Steve A.

EDIT: Does anyone have a well written app that demonstrates proper include behaviour? When learning something new I like to emulate the pros.

3. Re: Eu4 Upgrade - An update.

• Posted by mattlewis (admin) Feb 19, 2013
• 1568 views

The translator is definitely producing faster code. There are some other new features that can speed up code, especially if you find that your code does a lot of slicing operations to remove or replace sequence elements.

If you have a large application that uses a lot of global variables, this can definitely be the case. Euphoria has to do a bit more work to make sure it uses the right variables in various places. And easy thing to do is to make sure that you have include statements in your files for every file that you use (or, in the case of a library, the main include). This way, euphoria can more easily determine that it's using the right symbols. You'll need to do this once you've updated the code to use public or export scoped symbols instead of globals.

You can take a look at the standard library in include/std. Those files use code from each other a lot.

Matt

5. Re: Eu4 Upgrade - An update.

• Posted by mattlewis (admin) Feb 21, 2013
• 1466 views

test4[1] = SDL_GetTicks() 
 
while test4[1] = SDL_GetTicks() do 
	-- wait until clock ticks 
end while 
 
test4[1] = SDL_GetTicks() 
 
for impr = 1 to 1000000 do 
	for impt = 1 to 11 do 
		switch impt do  
		 
			case 1 then 
				break 

Note that by default, the "break" statement is not needed inside of a switch block, unless you've specified with fallthru.

Matt