From 340aa47c4652fe2f0ec5b0e4f293cfff407a0e6c Mon Sep 17 00:00:00 2001
From: metamuffin <metamuffin@disroot.org>
Date: Mon, 15 Jul 2024 15:00:27 +0200
Subject: add texture import/export system for light client

---
 light-client/tools/src/bin/tex_import.rs | 58 ++++++++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 light-client/tools/src/bin/tex_import.rs

(limited to 'light-client/tools/src/bin/tex_import.rs')

diff --git a/light-client/tools/src/bin/tex_import.rs b/light-client/tools/src/bin/tex_import.rs
new file mode 100644
index 00000000..89cbc8c9
--- /dev/null
+++ b/light-client/tools/src/bin/tex_import.rs
@@ -0,0 +1,58 @@
+use clap::Parser;
+use std::{
+    collections::HashMap,
+    fs::File,
+    io::{BufWriter, Write},
+    path::PathBuf,
+    process::exit,
+};
+
+#[derive(Parser)]
+struct Args {
+    input: PathBuf,
+    output: PathBuf,
+}
+
+fn main() {
+    let Args { input, output } = Args::parse();
+
+    let palette = include_str!("../../../textures/palette.csv")
+        .split('\n')
+        .filter(|l| !l.is_empty())
+        .map(|s| {
+            let (c, s) = s.split_once(",").unwrap();
+            let (r, s) = s.split_once(",").unwrap();
+            let (g, s) = s.split_once(",").unwrap();
+            let (b, a) = s.split_once(",").unwrap();
+            (
+                [
+                    r.parse().unwrap(),
+                    g.parse().unwrap(),
+                    b.parse().unwrap(),
+                    a.parse().unwrap(),
+                ],
+                c.chars().next().unwrap(),
+            )
+        })
+        .collect::<HashMap<_, _>>();
+
+    let input = image::open(input).unwrap().to_rgba8();
+    let mut output = BufWriter::new(File::create(output).unwrap());
+
+    for y in 0..input.height() {
+        for x in 0..input.width() {
+            let mut c = input.get_pixel(x, y).0;
+            if c[3] == 0 {
+                c = [0, 0, 0, 0];
+            }
+            let Some(char) = palette.get(&c) else {
+                eprintln!("color at {x},{y} not in palette: {c:?}");
+                exit(1);
+            };
+            write!(output, "{char}").unwrap();
+        }
+        writeln!(output).unwrap();
+    }
+    output.flush().unwrap();
+    output.into_inner().unwrap().flush().unwrap()
+}
-- 
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