From 34c94318a5168179028b6f63a3a7b7080a2edc2a Mon Sep 17 00:00:00 2001
From: Kiyoshi Aman <kiyoshi.aman@gmail.com>
Date: Tue, 23 Oct 2018 13:05:51 -0500
Subject: [PATCH] smeargle: Add flag for outputting tilemaps in little-endian
 format.

---
 readme.txt         |  3 ++-
 smeargle/game.py   |  3 ++-
 smeargle/script.py | 22 +++++++++++++++++++---
 3 files changed, 23 insertions(+), 5 deletions(-)

diff --git a/readme.txt b/readme.txt
index 4bcef39..9601bbb 100644
--- a/readme.txt
+++ b/readme.txt
@@ -39,7 +39,8 @@ in each object or array.
             "tile_offset": 256,            // Optional: Constant to add to tile index (first tile: 0x0000 + 256 = 0x0100)
             "raw_fn": "ex_raw.png",        // Optional: Output filename for raw graphic tile data.
             "deduped_fn": "ex_comp.png",   // Optional: Output filename for deduped tile data.
-            "tilemap_fn": "example.tbl"    // Optional: Output filename for tilemap text.
+            "tilemap_fn": "example.tbl",   // Optional: Output filename for tilemap text.
+            "little_endian": false         // Optional: Output tilemap in little-endian format.
         }
     }
 }
diff --git a/smeargle/game.py b/smeargle/game.py
index 3c1d7c5..7568c4d 100644
--- a/smeargle/game.py
+++ b/smeargle/game.py
@@ -38,7 +38,8 @@ class Game:
             'leading_zeroes': False,
             'raw_fn': None,
             'deduped_fn': None,
-            'tilemap_fn': None
+            'tilemap_fn': None,
+            'little_endian': False,
         }
 
         for script, data in self._data['scripts'].items():
diff --git a/smeargle/script.py b/smeargle/script.py
index 7dd6a08..123568c 100644
--- a/smeargle/script.py
+++ b/smeargle/script.py
@@ -33,7 +33,8 @@ class Script:
             'leading_zeroes': get_or_default(kwargs, 'leading_zeroes',     False),
             'raw_fn':         get_or_default(kwargs, 'raw_fn',             None),
             'deduped_fn':     get_or_default(kwargs, 'deduped_fn',         None),
-            'tilemap_fn':     get_or_default(kwargs, 'tilemap_fn',         None)
+            'tilemap_fn':     get_or_default(kwargs, 'tilemap_fn',         None),
+            'little_endian':  get_or_default(kwargs, 'little_endian',      False),
         }
         mint = self._cfg['min_tiles']
         maxt = self._cfg['max_tiles']
@@ -155,6 +156,10 @@ class Script:
                         upper_val = int(floor(index / 256))
                         lower_val = int(index % 256)
                         if upper_val > 0 or self.leading_zeroes is True:
+                            if self._cfg['little_endian']:
+                                temp = upper_val
+                                upper_val = lower_val
+                                lower_val = temp
                             map_idx[data] = "<${:02x}><${:02x}>".format(upper_val, lower_val)
                         else:
                             map_idx[data] = "<${:02x}>".format(lower_val)
@@ -163,12 +168,23 @@ class Script:
                         upper_val = int(floor(index / 256))
                         lower_val = int(index % 256)
                         if upper_val > 0 or self.leading_zeroes is True:
+                            if self._cfg['little_endian']:
+                                temp = upper_val
+                                upper_val = lower_val
+                                lower_val = temp
                             map_idx[data] = "{:02x}{:02x}".format(upper_val, lower_val)
                         else:
                             map_idx[data] = "{:02x}".format(lower_val)
                     else:
-                        if self.leading_zeroes:
-                            map_idx[data] = '0x{:04x}'.format(unique + self.tile_offset)
+                        index = unique + self.tile_offset
+                        upper_val = int(floor(index / 256))
+                        lower_val = int(index % 256)
+                        if upper_val > 0 or self.leading_zeroes is True:
+                            if self._cfg['little_endian']:
+                                temp = upper_val
+                                upper_val = lower_val
+                                lower_val = temp
+                            map_idx[data] = '0x{:02x}{:02x}'.format(upper_val, lower_val)
                         else:
                             map_idx[data] = '0x{:02x}'.format(unique + self.tile_offset)
                     unique += 1