From 79a59a1a5dc211353b84eedfce18666590d09b11 Mon Sep 17 00:00:00 2001
From: Jared Roberts <jaredr@gmail.com>
Date: Wed, 9 Mar 2016 12:21:18 -0800
Subject: [PATCH] town and world maps to unicode

---
 Cargo.toml       |   8 +++
 src/main.rs      |  49 ++++++++++++++++++
 src/transpose.rs |  89 ++++++++++++++++++++++++++++++++
 src/world.rs     | 128 +++++++++++++++++++++++++++++++++++++++++++++++
 4 files changed, 274 insertions(+)
 create mode 100644 Cargo.toml
 create mode 100644 src/main.rs
 create mode 100644 src/transpose.rs
 create mode 100644 src/world.rs

diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..0d3c581
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "vrtue"
+version = "0.1.0"
+authors = ["Jared Roberts <jaredr@gmail.com>"]
+
+[dependencies]
+itertools = ">=0.4"
+memmap = "~0.2"
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..ddd0953
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,49 @@
+extern crate itertools;
+extern crate memmap;
+
+use std::mem::transmute;
+use std::env;
+
+use itertools::Itertools;
+use memmap::{Mmap, Protection};
+
+mod world;
+mod transpose;
+
+use world::Map;
+
+fn mmap_to_rows<'a, M: world::Map>(mmap: &memmap::Mmap) -> &'a world::Map
+  where M: Copy + 'a
+{
+  assert!(std::mem::size_of::<M>() <= mmap.len());
+  unsafe { transmute::<*const u8, &M>(mmap.ptr()) }
+}
+
+fn main() {
+  let args: Vec<String> = env::args().collect();
+  let filename;
+  let conv;
+  if args.len() > 1 {
+    filename = &args[1] as &str;
+    conv = mmap_to_rows::<world::Chunk>;
+  } else {
+    filename = "data/WORLD.MAP";
+    conv = mmap_to_rows::<world::World>;
+  }
+
+  let file_mmap = Mmap::open_path(filename, Protection::Read).unwrap();
+  let world = conv(&file_mmap);
+
+  print_rows(world.rows());
+}
+
+fn print_rows<'a, T: ?Sized, U: ?Sized>(rows: Box<T>)
+  where T: Iterator<Item = Box<U>> + 'a,
+        U: Iterator<Item = &'a world::Tile> + 'a
+{
+  for row in rows {
+    let s1: String = row.into_iter().map(|tile| tile.as_char()).collect();
+    let s: String = s1.chars().intersperse(' ').collect();
+    println!("{}", s);
+  }
+}
diff --git a/src/transpose.rs b/src/transpose.rs
new file mode 100644
index 0000000..d4d9c10
--- /dev/null
+++ b/src/transpose.rs
@@ -0,0 +1,89 @@
+pub trait TransposableIterator: Iterator {
+  fn transpose<C, J, T>(self) -> Transpose<Self>
+    where Self: Iterator<Item = C> + Clone + Sized,
+          C: IntoIterator<Item = T, IntoIter = J>,
+          J: ExactSizeIterator<Item = T>
+  {
+    Transpose::new(self)
+  }
+}
+
+impl<I> TransposableIterator for I where I: Iterator
+{}
+
+#[derive(Clone)]
+pub struct Transpose<I> {
+  loc: ::std::ops::Range<usize>,
+  iter: I,
+}
+
+impl<I, C, J, T> Transpose<I>
+  where I: Iterator<Item = C> + Clone,
+        C: IntoIterator<Item = T, IntoIter = J>,
+        J: ExactSizeIterator<Item = T>
+{
+  fn new(base: I) -> Transpose<I> {
+    let longest = base.clone()
+                      .fold(0, |len, row| ::std::cmp::max(len, row.into_iter().len()));
+
+    Transpose {
+      loc: 0..longest,
+      iter: base,
+    }
+  }
+}
+
+impl<I> Iterator for Transpose<I> where I: Clone
+{
+  type Item = TransposeInner<I>;
+
+  #[inline]
+  fn next(&mut self) -> Option<TransposeInner<I>> {
+    self.loc.next().map(|idx| {
+      TransposeInner {
+        iter: self.iter.clone(),
+        col: idx,
+      }
+    })
+  }
+
+  fn size_hint(&self) -> (usize, Option<usize>) {
+    (self.loc.end, Some(self.loc.end))
+  }
+}
+
+impl<I> ExactSizeIterator for Transpose<I> where I: Clone
+{}
+
+impl<I> DoubleEndedIterator for Transpose<I> where I: Clone
+{
+  fn next_back(&mut self) -> Option<TransposeInner<I>> {
+    self.loc.next_back().map(|idx| {
+      TransposeInner {
+        iter: self.iter.clone(),
+        col: idx,
+      }
+    })
+  }
+}
+
+#[must_use = "iterator adaptors are lazy and do nothing unless consumed"]
+#[derive(Clone)]
+pub struct TransposeInner<I> {
+  iter: I,
+  col: usize,
+}
+
+impl<I, J, T> Iterator for TransposeInner<I>
+  where I: Iterator<Item = J>,
+        J: IntoIterator<Item = T>
+{
+  type Item = T;
+
+  #[inline]
+  fn next(&mut self) -> Option<T> {
+    self.iter.next().and_then(|row| row.into_iter().nth(self.col))
+  }
+}
+
+// TODO: ExactSizeIterator and DoubleEndedIterator for TransposeInner
diff --git a/src/world.rs b/src/world.rs
new file mode 100644
index 0000000..29f77f4
--- /dev/null
+++ b/src/world.rs
@@ -0,0 +1,128 @@
+extern crate core;
+extern crate itertools;
+
+use self::itertools::Itertools;
+
+use transpose::TransposableIterator;
+
+#[derive(Clone, Copy)]
+pub struct Tile {
+  val: u8,
+}
+
+impl Tile {
+  pub fn as_char(&self) -> char {
+    match self.val {
+      0 => '~', // deep water '🌊'
+      1 => '≈', // medium water
+      2 => '≋', // shallow water
+      3 => ',', // swamp
+      4 => '⢊', // plain '░'
+      5 => '🌿', // scrub 'წ'
+      6 => '🌳', // forest
+      7 => '⌓', // hill '∩'
+      8 => '⨇', // mountain '△'
+      9 => '☗', // dungeon
+      10 => '⍟', // city
+      11 | 13...15 => '⛫', // castle
+      12 => '❖', // village
+      22 => '⎔', // tile floor
+      23 => '⟗', // bridge
+      24 => '⧬', // balloon
+      25 => '≃', // bridge top
+      26 => '≂', // bridge bottom
+      27 => '⍐', // ladder up
+      28 => '⍗', // ladder down
+      29 => 'v', // ruin
+      30 => '◌', // shrine
+      48 => '◯', // column
+      49 => '◣', // SW
+      50 => '◢', // SE
+      51 => '◤', // NW
+      52 => '◥', // NE
+      54 => '⎈', // ship's wheel
+      55 => 'ფ', // rocks '❍'
+      56 => '/', // Lyin down
+      57 => '⬛', // stone wall
+      58 => '⧯', // '🔒', // locked door
+      59 => '⧮', // '🔓', // unlocked door
+      60 => '💰', // chest
+      61 => '☥', // ankh
+      62 => '⨳', // brick floor '⌗'
+      63 => '▤', // wood planks '⧻'
+      68 => '🌫', // poison field
+      69 => '⚡', // energy field
+      70 => '🔥', // fire field
+      71 => '💤', // sleep field
+      72 => '▣', // solid barrier
+      73 => '▒', // hidden passage
+      75 => '🍖', // spit (rotisserie) '🍳'
+      76 => '⌘', // lava
+      96...121 => ::std::char::from_u32((self.val - 31) as u32).unwrap(),
+      122 => '=', // space
+      123 => '⊐', // right ''
+      124 => '⊏', // left '⊨'
+      125 => '▢', // window
+      126 => '✨', // space
+      127 => '▓', // brick wall
+      189 => '⚔', // phantom 2
+      _ => '?', // panic!("{0}", self.val)
+    }
+  }
+}
+
+pub trait Map {
+  fn rows<'a>(&'a self) -> BoxedMapIterator;
+}
+
+pub type BoxedMapIterator<'a> = Box<Iterator<Item = ChunkRowIterator<'a>> + 'a>;
+pub type ExactBoxedMapIterator<'a> = Box<ExactSizeIterator<Item = ChunkRowIterator<'a>> + 'a>;
+
+const CHUNKDIM: usize = 32;
+pub type ChunkRow = [Tile; CHUNKDIM];
+pub type ChunkRect = [ChunkRow; CHUNKDIM];
+pub type ChunkRowIterator<'a> = Box<Iterator<Item = &'a Tile> + 'a>;
+#[derive(Clone, Copy)]
+pub struct Chunk {
+  pub rect: ChunkRect,
+}
+
+impl Chunk {
+  fn rows_exact<'a>(&'a self) -> ExactBoxedMapIterator {
+    Box::new(self.rect
+                 .iter()
+                 .map(|row| Box::new(row.into_iter()) as ChunkRowIterator<'a>))
+  }
+}
+
+impl Map for Chunk {
+  fn rows<'a>(&'a self) -> BoxedMapIterator {
+    Box::new(self.rect
+                 .iter()
+                 .map(|row| Box::new(row.into_iter()) as ChunkRowIterator<'a>))
+  }
+}
+
+impl<'a> IntoIterator for &'a Chunk {
+  type Item=ChunkRowIterator<'a>;
+  type IntoIter=ExactBoxedMapIterator<'a>;
+  fn into_iter(self) -> Self::IntoIter {
+    self.rows_exact()
+  }
+}
+
+const WORLDDIM: usize = 8;
+pub type WorldRow = [Chunk; WORLDDIM];
+pub type WorldRect = [WorldRow; WORLDDIM];
+#[derive(Clone, Copy)]
+pub struct World {
+  pub rect: WorldRect,
+}
+
+impl Map for World {
+  fn rows<'a>(&'a self) -> BoxedMapIterator {
+    let flipped = self.rect.iter().map(|cr| cr.into_iter().transpose());
+    Box::new(flipped.flatten()
+                    .map(|r| Box::new(r.flatten()) as ChunkRowIterator<'a>))
+  }
+}