Add optional display implementation using embedded-graphics (taken from mlog-pico)

Author: object-Object

Cargo.lock

@@ -34,6 +34,9 @@ strum = { version = "0.27.2", default-features = false, features = ["derive"] }
 thiserror = { version = "2.0.12", default-features = false }
 widestring = { version = "1.2.0", default-features = false, features = ["alloc"] }
 
+# embedded_graphics
+embedded-graphics = { version = "0.8.1", optional = true }
+
 # no_std
 libm = { version = "0.2.11", optional = true }
 serde-json-core = { version = "0.6.0", optional = true }
@@ -61,6 +64,7 @@ indicatif = { version = "0.18.0", optional = true }
 bitflags = "2.9.1"
 
 [build-dependencies]
+eg-font-converter = { git = "https://github.com/embedded-graphics/bdf", optional = true }
 lalrpop = { version = "0.22.2", optional = true }
 
 [dev-dependencies]
@@ -70,6 +74,10 @@ velcro = "0.5.4"
 
 [features]
 default = ["std"]
+embedded_graphics = [
+    "dep:eg-font-converter",
+    "dep:embedded-graphics",
+]
 no_std = [
     "dep:libm",
     "dep:serde-json-core",

Cargo.toml

@@ -4,4 +4,27 @@ fn main() {
         println!("cargo:rerun-if-changed=src/logic/grammar.lalrpop");
         lalrpop::process_root().unwrap();
     }
+
+    #[cfg(feature = "embedded_graphics")]
+    {
+        use std::{env, fs, path::PathBuf};
+
+        use eg_font_converter::FontConverter;
+
+        let out_dir = PathBuf::from(env::var_os("OUT_DIR").unwrap());
+
+        let fonts_dir = out_dir.join("fonts");
+        fs::create_dir(&fonts_dir).ok();
+
+        println!("cargo:rerun-if-changed=fonts/mindustry/logic.bdf");
+
+        // https://github.com/Anuken/Mindustry/blob/65a50a97423431640e636463dde97f6f88a2b0c8/core/src/mindustry/ui/Fonts.java#L88C27-L88C126
+        FontConverter::with_file("fonts/mindustry/logic.bdf", "LOGIC")
+        .glyphs("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz1234567890\"!`?'.,;:()[]{}<>|/@\\^$€-%+=#_&~* ")
+        .replacement_character(' ')
+        .convert_mono_font()
+        .unwrap()
+        .save(&fonts_dir)
+        .unwrap();
+    }
 }

build.rs

@@ -0,0 +1,2 @@
+- `logic.bdf`: `otf2bdf -p 12 -c m -o logic.bdf logic.ttf`
+- `logic.ttf`: https://github.com/Anuken/Mindustry/blob/65a50a97423431640e636463dde97f6f88a2b0c8/core/assets/fonts/logic.ttf