Loading font with more than 127 Chars

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Wilma456
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Loading font with more than 127 Chars

Post by Wilma456 » Sun Jul 23, 2017 4:06 pm

I had this code to lode a font:

Code: Select all

local glyphs = ""
for i = 0,127 do
	glyphs = glyphs .. string.char(i)
end
Screen.font = love.graphics.newImageFont("res/font.png",glyphs)
The font has 255 Chars, but If I use a number bigger than 127, I get the error "Error: UTF-8 decoding error: Invalid UTF-8". How can I solve this?

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raidho36
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Re: Loading font with more than 127 Chars

Post by raidho36 » Sun Jul 23, 2017 5:30 pm

LOVE uses utf-8 encoding. It's a multi byte encoding compatible with ASCII, which is single byte. It detects multi byte characters by most significant bit - all ASCII characters have this bit set to 0, so if it's 1 then it's a multi byte character. In an unsigned 8 bit integer, most significant bit set to 1 adds 128, and vice versa. If this bit is set, then it expects this and following bytes to encode a utf-8 character. Which in your case they obviously don't.

The solution to your problem is to supply character list manually. Which is what you should do either way.

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Wilma456
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Re: Loading font with more than 127 Chars

Post by Wilma456 » Thu Aug 03, 2017 1:58 pm

What did you mena with "supply character list manually"?

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raidho36
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Re: Loading font with more than 127 Chars

Post by raidho36 » Thu Aug 03, 2017 3:21 pm

Code: Select all

"abcdefghijklmnopqrstuvwxyz1234567890àáâèéêòóöùúüũ"

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zorg
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Re: Loading font with more than 127 Chars

Post by zorg » Thu Aug 03, 2017 9:47 pm

raidho36 wrote:
Thu Aug 03, 2017 3:21 pm

Code: Select all

"abcdefghijklmnopqrstuvwxyz1234567890àáâèéêòóöùúüũ"
Or in other words, write out all the characters you want it to have... and make sure they're saved with UTF-8 encoding (without byte-order mark) otherwise you will have the same problem.
Me and my stuff :3True Neutral Aspirant. Why, yes, i do indeed enjoy sarcastically correcting others when they make the most blatant of spelling mistakes. No bullying or trolling the innocent tho.

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Inny
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Re: Loading font with more than 127 Chars

Post by Inny » Fri Aug 04, 2017 2:21 am

Are you loading 256 characters because you want ANSI line drawing characters?

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Wilma456
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Re: Loading font with more than 127 Chars

Post by Wilma456 » Thu Aug 10, 2017 5:15 pm

I'm tying to load this File

I have executed

Code: Select all

for i=1,255 do io.write(string.char(i)) end
in the LUA Console and this was the Output:

Code: Select all




 !"#$%&'()*+,-./0123456789:;<=>[email protected][\]^_`abcdefghijklmnopqrstuvwxyz{|}~��������������������������������������������������������������������������������������������������������������������������������
The first Chars are not there. It is just space, I can't copy it into my file. Any other Idea?

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ivan
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Re: Loading font with more than 127 Chars

Post by ivan » Thu Aug 10, 2017 5:57 pm

Wilma456 wrote:
Thu Aug 10, 2017 5:15 pm
The first Chars are not there. It is just space, I can't copy it into my file. Any other Idea?
The first 32 ANSI characters are not printable, so you're not going to be able to draw them using Love2D.
The Lua console will probably fail to display UTF8 too.
If you're trying to draw a string that contains these control characters,
you can take your Lua string and replace the specific chars with something like \1, \2, \3, etc.

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raidho36
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Re: Loading font with more than 127 Chars

Post by raidho36 » Thu Aug 10, 2017 9:25 pm

Windows terminal could fail to print UTF-8, but I know for a fact that in Linux any terminal would print it just fine.

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Wilma456
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Re: Loading font with more than 127 Chars

Post by Wilma456 » Fri Aug 11, 2017 11:24 am

I've tried it with this:

Code: Select all

local glyphs = "\1\2\3\4\5\6\7\8\9\10\11\12\13\14\15\16\17\18\19\20\21\22\23\24\25\26\27\28\29\30\31\32\33\34\35\36\37\38\39\40\41\42\43\44\45\46\47\48\49\50\51\52\53\54\55\56\57\58\59\60\61\62\63\64\65\66\67\68\69\70\71\72\73\74\75\76\77\78\79\80\81\82\83\84\85\86\87\88\89\90\91\92\93\94\95\96\97\98\99\100\101\102\103\104\105\106\107\108\109\110\111\112\113\114\115\116\117\118\119\120\121\122\123\124\125\126\127\128\129\130\131\132\133\134\135\136\137\138\139\140\141\142\143\144\145\146\147\148\149\150\151\152\153\154\155\156\157\158\159\160\161\162\163\164\165\166\167\168\169\170\171\172\173\174\175\176\177\178\179\180\181\182\183\184\185\186\187\188\189\190\191\192\193\194\195\196\197\198\199\200\201\202\203\204\205\206\207\208\209\210\211\212\213\214\215\216\217\218\219\220\221\222\223\224\225\226\227\228\229\230\231\232\233\234\235\236\237\238\239\240\241\242\243\244\245\246\247\248\249\250\251\252\253\254\255"
Screen.font = love.graphics.newImageFont("res/font.png",glyphs)
But I got the UTF-8 error.
raidho36 wrote:
Thu Aug 10, 2017 9:25 pm
Windows terminal could fail to print UTF-8, but I know for a fact that in Linux any terminal would print it just fine.
I' using Ubuntu.

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