From 3198e50822aadbf3272ad0e3e042e73ae88fb810 Mon Sep 17 00:00:00 2001
From: Jared Roberts <jaredr@gmail.com>
Date: Tue, 15 Mar 2016 05:32:11 -0700
Subject: [PATCH] tile converter

---
 Cargo.toml          |  3 +++
 src/bin/tileview.rs | 66 +++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 69 insertions(+)
 create mode 100644 src/bin/tileview.rs

diff --git a/Cargo.toml b/Cargo.toml
index 0d3c581..52d570f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,3 +6,6 @@ authors = ["Jared Roberts <jaredr@gmail.com>"]
 [dependencies]
 itertools = ">=0.4"
 memmap = "~0.2"
+
+sdl2 = "0.15"
+sdl2_image = "1.0"
diff --git a/src/bin/tileview.rs b/src/bin/tileview.rs
new file mode 100644
index 0000000..0e174a5
--- /dev/null
+++ b/src/bin/tileview.rs
@@ -0,0 +1,66 @@
+extern crate itertools;
+extern crate sdl2;
+extern crate sdl2_image;
+
+use std::env;
+use std::io::Read;
+use std::path::Path;
+
+use itertools::Itertools;
+use sdl2::surface::Surface;
+use sdl2::pixels::PixelFormatEnum;
+use sdl2_image::SaveSurface;
+
+static EGA_PALETTE: [[u8; 4]; 16] = [[0x00u8, 0x00, 0x00, 0x00],
+                                     [0x00, 0xAA, 0x00, 0x00],
+                                     [0x00, 0x00, 0xAA, 0x00],
+                                     [0x00, 0xAA, 0xAA, 0x00],
+                                     [0x00, 0x00, 0x00, 0xAA],
+                                     [0x00, 0xAA, 0x00, 0xAA],
+                                     [0x00, 0x00, 0x55, 0xAA],
+                                     [0x00, 0xAA, 0xAA, 0xAA],
+                                     [0x00, 0x55, 0x55, 0x55],
+                                     [0x00, 0xFF, 0x55, 0x55],
+                                     [0x00, 0x55, 0xFF, 0x55],
+                                     [0x00, 0xFF, 0xFF, 0x55],
+                                     [0x00, 0x55, 0x55, 0xFF],
+                                     [0x00, 0xFF, 0x55, 0xFF],
+                                     [0x00, 0x55, 0xFF, 0xFF],
+                                     [0x00, 0xFF, 0xFF, 0xFF]];
+
+
+
+pub fn main() {
+  let args: Vec<String> = env::args().collect();
+  let filename;
+  if args.len() > 1 {
+    filename = &args[1] as &str;
+  } else {
+    filename = "data/SHAPES.EGA";
+  }
+
+  let _sdl_context = ::sdl2::init().unwrap();
+  let _image_context = ::sdl2_image::init(::sdl2_image::INIT_PNG).unwrap();
+
+  let mut file = std::fs::File::open(Path::new(filename)).unwrap();
+  let mut tile_buf = [0u8; 128];
+  let mut surface = Surface::new(16, 16, PixelFormatEnum::RGBX8888).unwrap();
+  let mut i = 0;
+  while file.read_exact(&mut tile_buf).is_ok() {
+    surface.with_lock_mut(|pixel_bytes| {
+      pixel_bytes.iter_mut().set_from(tile_buf.iter()
+                                              .flat_map(|tile_byte| {
+                                                EGA_PALETTE[(tile_byte >> 4u8 & 0xF) as usize]
+                                                  .into_iter()
+                                                  .chain(EGA_PALETTE[(tile_byte & 0xF) as usize]
+                                                           .into_iter())
+                                              })
+                                              .map(|x| *x));
+
+
+    });
+    let out_name = format!("out/{}.png", i);
+    surface.save(Path::new(&out_name)).ok();
+    i += 1;
+  }
+}