TTF font and Unicode support

All text is now rendered with TTF fonts using `pangocairo`, and UTF-8 strings are supported natively.

Add a dependency on `pango >= 1.46`, `cairo >= 1.18` and `fontconfig`.

Player names are restricted to a subset of Latin, Cyrillic and Greek characters in order to prevent abuse. The rest of the UI, console and particles can use any Unicode characters without restriction.

In addition to the color codes `\f0` through `\f9`, more codes have been added to support basic markup:
- \fb...\fB = bold
- \fi...\fI = italic
- \fu...\fU = underline
- \ft...\fT = strikethrough
- \fo...\fO = overline
where `...` is the part of the string to apply the markup to.

Using TTF fonts:
- each TTF file must be registered with the `registerfont` command before it can be used
- the `font` command is used to define a font family (and optionally style) to use in-game
- several commands are available to customize each font, see `config/font.cfg` for how to use them
- the `fontalias` command has been removed

Console changes:
- add the `conshadow` (0, 255, 255) variable: adds a shadow to console text for increased visibility
- change the range of `conscale` from (0.001, 0.45, 1000) to (0.5, 1, 2)

Text input changes:
- add the `cursorblink` (0, 750, 2000) variable to customize the cursor's blink speed (0 = disable blinking)
- add the `cursorcolor` (0xFFFFFF) variable to customize the cursor's color
- the cursor does not blink while the user is typing

Text particle changes:
- the font to use for each particle can be specified as an argument to `particle_text()`
- add the `particle_hud_text()` function: renders a text particle as a hud mark, similar to `particle_hud_mark()`, this is now used to render the `GOAL` label in CTF mode

UI changes:
- `uitext` and related commands accept a `fancy` argument, used for shadows and outlines, and a `language` argument, which may be necessary to render text in certain languages correctly. The language argument must be in `RFC 3066` format.
- valid values for `fancy`: 0 = nothing; 1 = shadow; 2 = outline; 3 = shadow + outline
- remove the `uitextrows` variable; UI text scale can still be configured with `uiscale`
- add the `uifps` (0, 60, 1000) variable: controls how often text elements check for text changes (0 = check every frame, may impact performace)

Miscellaneous changes:
- change the `filtertext` function to take a `flags` argument rather than a series of booleans
- remove the `tabify` and `textbright` commands
- remove the `tessfont` tool

Global font settings (users may change these to their liking):
- fontantialias (0, 1, 1): toggle font antialiasing (only grayscale antialiasing is supported)
- fonthinting (-1, -1, 3): set font hinting (-1 = system default, 0 = disabled, 1 = slight, 2 = medium, 3 = full)

Settings for individual fonts (to use after the `font` command, refer to `config/font.cfg`):
- fontweight [-3..6]: < 0 = lighter, > 0 = bolder
- fontstretch [-4..4]: < 0 = tighter, > 0 = wider; many fonts don't support this, use `fontletterspacing` instead
- fontstyle [0..2]: 0 = normal, 1 = oblique, 2 = italic
- fontsmallcaps 0|1
- fontletterspacing val: `val` is a floating point value, measured in points; < 0 = tighter, > 0 = wider
- fontfeatures [...features]: OpenType features, in CSS `font-feature-settings` format
- fontvariations "variations": for OpenType variable fonts, format: "AXIS1=VALUE,AXIS2=VALUE..."

Author: Jed-

config/font.cfg

@@ -1,14 +1,26 @@
 
 // Execute dedicated game fonts here
 
-loopfiles f "data/interface/font" cfg [
-	exec (+s "data/interface/font/" $f ".cfg")
-]
+// registerfont "filename" // "family name"
 
-// Change the two following lines to define default font
-fontalias "default"    "main"
-fontalias "default.ol" "main.ol"
+// font "name" "family name"
+    // fontweight        -3..6         // < 0 = thinner, > 0 = thicker
+    // fontstretch       -4..4         // < 0 = tighter, > 0 = wider ; many fonts don't support this
+    // fontstyle         0|1|2         // 0 = normal, 1 = oblique, 2 = italic
+    // fontsmallcaps     0|1
+    // fontletterspacing val           // float; < 0 = tighter, > 0 = wider
+    // fontfeatures      [...features] // OpenType features (in CSS format)
+    // fontvariations    "variations"  // for variable fonts; format: "AXIS1=VALUE,AXIS2=VALUE..."
 
-// Shorthand aliases
-fontalias "def"    "default"
-fontalias "def.ol" "default.ol"
+registerfont "data/interface/font/InterVariable.ttf" // Inter Variable
+registerfont "data/interface/font/InterVariable-Italic.ttf" // Inter Variable Italic
+registerfont "data/interface/font/DejaVuSansMono.ttf" // DejaVu Sans Mono
+registerfont "data/interface/font/Oxanium-VariableFont_wght.ttf" // Oxanium
+registerfont "data/interface/font/webdings.ttf" // Webdings
+
+font "default"  "Inter Variable, Sans"
+    fontfeatures ["ss04", "cv12", "cv13"]
+font "mono"     "DejaVu Sans Mono, Monospace"
+font "wide"     "Oxanium, Inter Variable, Sans"
+    fontweight 4
+font "webdings" "Webdings"

config/glsl/hud.cfg

@@ -28,33 +28,6 @@ shader 0 "hud" [
     }
 ]
 
-shader 0 "hudtext" [
-    attribute vec4 vvertex, vcolor;
-    attribute vec2 vtexcoord0;
-    uniform mat4 hudmatrix;
-    varying vec2 texcoord0;
-    varying vec4 colorscale;
-    void main(void)
-    {
-        gl_Position = hudmatrix * vvertex;
-        texcoord0 = vtexcoord0; 
-        colorscale = vcolor;
-    }
-] [
-    uniform sampler2D tex0;
-    uniform vec4 textparams;
-    varying vec2 texcoord0;
-    varying vec4 colorscale;
-    fragdata(0) vec4 fragcolor;
-    void main(void)
-    {
-        float dist = texture2D(tex0, texcoord0).r;
-        float border = smoothstep(textparams.x, textparams.y, dist);
-        float outline = smoothstep(textparams.z, textparams.w, dist);
-        fragcolor = vec4(colorscale.rgb * outline, colorscale.a * border);
-    }
-]
-
 shader 0 "hudrgb" [
     attribute vec4 vvertex, vcolor;
     attribute vec2 vtexcoord0;
@@ -152,6 +125,30 @@ shader 0 "hudrect" [
     }
 ]
 
+shader 0 "hudtext" [
+    attribute vec4 vvertex, vcolor;
+    attribute vec2 vtexcoord0;
+    uniform mat4 hudmatrix;
+    varying vec2 texcoord0;
+    varying vec4 colorscale;
+    void main(void)
+    {
+        gl_Position = hudmatrix * vvertex;
+        texcoord0 = vtexcoord0; 
+        colorscale = vcolor;
+    }
+] [
+    uniform sampler2DRect tex0;
+    varying vec2 texcoord0;
+    varying vec4 colorscale;
+    fragdata(0) vec4 fragcolor;
+    void main(void)
+    {
+        fragcolor = colorscale * texture2DRect(tex0, texcoord0);
+        if(fragcolor.a != 0) fragcolor.rgb = fragcolor.rgb / fragcolor.a;
+    }
+]
+
 shader 0 "hud3d" [
     attribute vec4 vvertex, vcolor;
     attribute vec3 vtexcoord0;

config/glsl/particle.cfg

@@ -107,17 +107,14 @@ shader 0 "particletext" [
         color = vec4(vcolor.rgb * ldrscale, vcolor.a);
     }
 ] [
-    uniform vec4 textparams;
-    uniform sampler2D tex0;
+    uniform sampler2DRect tex0;
     varying vec4 color;
     varying vec2 texcoord0;
     fragdata(0) vec4 fragcolor;
     void main(void)
     {
-        float dist = texture2D(tex0, texcoord0).r;
-        float border = smoothstep(textparams.x, textparams.y, dist);
-        float outline = smoothstep(textparams.z, textparams.w, dist);
-        fragcolor = vec4(color.rgb * outline, color.a * border);
+        fragcolor = color * texture2DRect(tex0, texcoord0);
+        if(fragcolor.a != 0) fragcolor.rgb /= fragcolor.a;
     }
 ]
 

config/ui/hud/editstats.cfg

@@ -333,8 +333,8 @@ uiLiteMenu "edithud" [
 							uigrid 2 $uiPad:3XL $uiPad:L [
 								uihlist $uiPad:XL [
 									uitext "WTR" 0.5
-									uitext (tabify (format "%1k" $editstatwtr) 1) 0.5
-									uitext (tabify (format "(%1%%)" $editstatvtr) 2) 0.5
+									uitext (format "%1k" $editstatwtr) 0.5
+									uitext (format "(%1%%)" $editstatvtr) 0.5
 								]
 								uihlist $uiPad:XL [
 									uitext "WVT" 0.5

config/ui/hud/gamehud.cfg

@@ -735,7 +735,7 @@ newui "scoreboard" [
 				uiFastImg (fade (? $arg1 0.5 0.25)) "hud/" "shelf" "" $uiPad:5XL
 				uiFastImg <mad:.18/.18/.18> "hud/" "glow" "" $uiPad:5XL
 				push n (+ $n 1) [
-					uifontcolortext "def.ol" $n (|A! (? $arg1 0xB0 0x60)) 0.55
+					uifontcolortext "default" $n (|A! (? $arg1 0xB0 0x60)) 0.55
 				]
 			] ; uialign- -1
 		]
@@ -786,14 +786,14 @@ newui ".killUI" [
 			uifill 0 0.3
 			t = (getrespawnwait)
             uispace 0.02 0.02 [
-                uifonttext "wide.ol" $lasthudkillinfo $uiPad:USS
+                uifonttext "wide" $lasthudkillinfo $uiPad:USS
             ]
 			uispace 0 0 [
 				uioffset 0 $uiPad:D2XL- [
                     if (m_invasion $getmode) [
-                        uifonttext "wide.ol" (+s "^f4Lives remaining: " $getclientlives) $uiPad:USS
+                        uifonttext "wide" (+s "^f4Lives remaining: " $getclientlives) $uiPad:USS
                     ] [
-                        uifontcolortext "wide.ol" (? $t $t " ") (? (< (getmillis) (+ 100 (getlastspawnattempt))) $c_red $c_white) 1
+                        uifontcolortext "wide" (? $t $t " ") (? (< (getmillis) (+ 100 (getlastspawnattempt))) $c_red $c_white) 1
                     ]
 				]
 			]

config/ui/hud/geo_prefab.cfg

@@ -24,7 +24,7 @@ uiLiteMenu "geo_prefab" [
 						uiclamp*e
 						uispace $uiPad:S $uiPad:O3 [
 							uialign -1 -1
-							uifontcolortext "def.ol" $i (|A! 0x98) 0.55
+							uifontcolortext "default" $i (|A! 0x98) 0.55
 						]
 						uihover [
 							if (!= $i $.UI_obrsel) [

config/ui/hud/mapmodel_browser.cfg

@@ -54,11 +54,11 @@ uiLiteMenu "mapmodel_browser" [
 								uimodelpreview (mapmodelname $i 1) "mapmodel"
 								uiclamp*e
 								uispace $uiPad:S $uiPad:O3 [
-									uifonttext "def.ol" $i 0.55
+									uifonttext "default" $i 0.55
 								] ; uialign- -1 -1
 								if (iskeyheld "LSHIFT") [
 									uispace $uiPad:S 0 [
-										uifonttext "webdings.ol" "q" 0.65
+										uifonttext "webdings" "q" 0.65
 									] ; uialign- -1 1
 									uirelease [ clearmodel (+s "mapmodel/" (mapmodelname $i)) ]
 								] [
@@ -77,14 +77,14 @@ uiLiteMenu "mapmodel_browser" [
 								uimodelpreview (mapmodelname $i 1) "mapmodel"
 								uiclamp*e
 								uispace $uiPad:S $uiPad:O3 [
-									uifontcolortext "def.ol" $i (|A! 0xA0) 0.55
+									uifontcolortext "default" $i (|A! 0xA0) 0.55
 								] ; uialign- -1 -1
 								uihover [ .mm_selidx = $n ; uiSetMillis ]
 								uioutline $c_line1 $.z $.z
 							]
 							if (mapmodelloaded $i) [
 								uispace $uiPad:S $uiPad:O3 [
-									uifonttext "webdings.ol" "a" 0.55
+									uifonttext "webdings" "a" 0.55
 								] ; uialign- 1 -1
 							]
 							uiHoverOnce [ uiHoverSound ]

config/ui/hud/texture_browser.cfg

@@ -29,7 +29,7 @@ uiLiteMenu "texture_browser" [
 							]
 							uispace $uiPad:S $uiPad:O3 [
 								uialign -1 -1
-								uifontcolortext "def.ol" $i (|A! 0x98) 0.55
+								uifontcolortext "default" $i (|A! 0x98) 0.55
 							]
 						]
 						uipress [ uiSetMillis ]
@@ -83,7 +83,7 @@ uiLiteMenu "texture_browser" [
 							uiclip 0 $uiPad:6XL [ uicolortext "/" $c_gray 1.2 ]
 						] // text takes up a lot of vertical space, have to "cut" it
 						uifill $uiPad:DXS 0 [
-							uifonttext "def.ol" (max $.tb_totalpg 1) 0.7
+							uifonttext "default" (max $.tb_totalpg 1) 0.7
 							uialign- -1 1
 						]
 						uiclamp*y
@@ -110,7 +110,7 @@ uiLiteMenu "texture_browser" [
 								uislotview $i
 								uiclamp*e
 								uispace $uiPad:S $uiPad:O3 [
-									uifontcolortext "def.ol" $i (|A! 0xA0) 0.55
+									uifontcolortext "default" $i (|A! 0xA0) 0.55
 								] ; uialign- -1 -1
 								uirelease [
 									settex (getslottex $i)

config/ui/lib.cfg

@@ -45,8 +45,8 @@ uiclamp*x = [ uiclamp* 1 1 0 0 ]
 uiclamp*y = [ uiclamp* 0 0 1 1 ]
 uiclamp*e = [ uiclamp* 1 1 1 1 ]
 
-uifonttext      = [ uifont $arg1 [ uitext      $arg2 $arg3       ] ]
-uifontcolortext = [ uifont $arg1 [ uicolortext $arg2 $arg3 $arg4 ] ]
+uifonttext      = [ uifont $arg1 [ uitext      $arg2 $arg3 $arg4       ] ]
+uifontcolortext = [ uifont $arg1 [ uicolortext $arg2 $arg3 $arg4 $arg5 ] ]
 
 changeui = [
 	if $arg2 [] [ arg2 = $uiname ]
@@ -793,23 +793,17 @@ uiButton = [
 
 // uiFancyText  FONT  TEXT  SIZE  0xCOLOR  TRANSPARENCY
 uiFancyText = [
-	if (=s $arg1 "") [ arg1 = "def" ]
+	if (=s $arg1 "") [ arg1 = "default" ]
 	if $arg4 [] [ arg4 = $c_white ]
 	if (< $numargs 5) [ arg5 = 1 ]
-	uigroup [
-		uioffset $uiPad:O1- $uiPad:O1 [
-			uifontcolortext [@arg1.ol] (stripcolors $arg2) (|A (*fA $arg5 0x20)) $arg3
-			uifontcolortext  $arg1     (stripcolors $arg2) (|A (*fA $arg5))      $arg3
-		]
-		uioffset $uiPad:O1 $uiPad:O1- [
-			uifontcolortext $arg1 $arg2 (|A (*fA $arg5) $arg4) $arg3
-		]
+	uigroup [ // DO NOT REMOVE!
+		uifontcolortext $arg1 $arg2 (|A (*fA $arg5) $arg4) $arg3 1
 	]
 ]
 
 // uiEmbossText  FONT  TEXT  SIZE  0xCOLOR
 uiEmbossText = [
-	if (=s $arg1 "") [ arg1 = "def" ]
+	if (=s $arg1 "") [ arg1 = "default" ]
 	uigroup [
 		uioffset $uiPad:O2- $uiPad:O2 [
 			uifontcolortext $arg1 (stripcolors $arg2) 0 $arg3
@@ -851,7 +845,7 @@ uiVerSld = [
 			] ; uiclamp-x
 			uivlist $uiPad:M- [
 				loop i (strlen $arg6) [
-					uifontcolortext "def.ol" (substr $arg6 $i 1) (|A! (? $arg9 0xA0 0x60)) 0.65
+					uifontcolortext "default" (substr $arg6 $i 1) (|A! (? $arg9 0xA0 0x60)) 0.65
 				]
 			]
 		]
@@ -880,7 +874,7 @@ uiHorSld = [
 					uiclamp*y
 				]
 			] ; uiclamp-y
-			uifontcolortext "def.ol" $arg6 (|A! (? $arg9 0xA0 0x60)) 0.65
+			uifontcolortext "default" $arg6 (|A! (? $arg9 0xA0 0x60)) 0.65
 		]
 		uiclamp*e
 	]
@@ -910,7 +904,7 @@ uiVerColorSld = [
 			] ; uiclamp-x
 			uivlist $uiPad:M- [
 				loop i (strlen $$arg1) [
-					uifontcolortext "wide.ol" (substr $$arg1 $i 1) (|A! (? $arg9 0xA0 0x60)) 0.7
+					uifontcolortext "wide" (substr $$arg1 $i 1) (|A! (? $arg9 0xA0 0x60)) 0.7
 				]
 			]
 		]
@@ -940,7 +934,7 @@ uiHorColorSld = [
 					uiclamp*y
 				]
 			] ; uiclamp-y
-			uifontcolortext "wide.ol" $$arg1 (|A! (? $arg9 0xA0 0x60)) 0.7
+			uifontcolortext "wide" $$arg1 (|A! (? $arg9 0xA0 0x60)) 0.7
 		]
 		uiclamp*e
 	]

config/ui/libnew.cfg

@@ -170,7 +170,7 @@ uiSliderH = [
 						uiFastImgStretched "" "shadow2" "" "" [ uiclamp.x ]
 						uiclamp*e
 						if $arg9 [ arg10 = 0xA0FFFFFF ] [ arg10 = 0x60FFFFFF ]
-						uiFontColorText "def.ol" $arg6 0.65 $arg10
+						uiFontColorText "default" $arg6 0.65 $arg10
 					] ; uiclamp-y
 				]
 			] ; uiclamp-y