Add some notes on the changelog

Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>

1 files changed, 29 insertions, 2 deletions

diff --git a/CHANGELOG.md b/CHANGELOG.md
index fa7d153..1d0bfdc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,30 @@
-# 1.0
+# 1.0 (Under development)
 
-WIP
+The game tries to be close to the original ZX Spectrum version, while being
+adapted to the reality of the NES/Famicom. This means:
+
+- The player is presented with a **title screen** which is a merge between the
+  "Loading" and the title screens from the ZX Spectrum. On the NES/Famicom the
+  concept of "loading" is quite foreign to players (unless your are on the
+  [Famicom Disk System](https://en.wikipedia.org/wiki/Famicom_Disk_System), of
+  course), but at the same time I wanted to re-use at least some of its elements
+  on the otherwise quite blank title screen from the original. Hence, both
+  screens have been merged to something that feels more like it belongs to the
+  NES/Famicom library.
+- **Colors** are slightly different because of palette differences between the
+  NES/Famicom and the ZX Spectrum. That being said, some colors have been
+  rearranged on purpose, like the red on the jetpac's fire or the general change
+  on the title screen (because it's a new thing altogether).
+- The **controls** of the player should be quite close to the original, even if
+  physics might be a bit different here and there. Overall, it shouldn't be too
+  distracting and I'm fine with them being slightly different to the original.
+- **Shooting** is something that is completely different to the original, as the
+  NES/Famicom presents a sprite limit per scanline which is quite daunting for a
+  shooter. I also envisioned doing nasty things on background tiles, but that is
+  hard to do and probably not worth it. In the end: different machine, different
+  rules. Hence, bullets are handled in a similar way as other games for the
+  NES/Famicom, even if it's not particularly close to the original.
+- As an homage to Donkey Kong 64, you can **collect a coin** after completing 16
+  stages. This coin features a chameleon as a reference to SUSE, since I
+  originally bootstrapped this project during [Hackweek
+  23](https://hackweek.opensuse.org/projects/port-the-jetpac-game-to-the-nes).