From 1b8f4bbdc92d42cf332845bf816333f6bad37e6e Mon Sep 17 00:00:00 2001
From: Gwilym Inzani <email@gwilym.dev>
Date: Wed, 19 Jul 2023 13:22:26 +0100
Subject: [PATCH] NoteCut support

---
 tracker/agb-tracker-interop/src/lib.rs | 2 ++
 tracker/agb-tracker/src/lib.rs         | 6 ++++++
 tracker/agb-xm-core/src/lib.rs         | 4 ++++
 3 files changed, 12 insertions(+)

diff --git a/tracker/agb-tracker-interop/src/lib.rs b/tracker/agb-tracker-interop/src/lib.rs
index d165d612..d2c92533 100644
--- a/tracker/agb-tracker-interop/src/lib.rs
+++ b/tracker/agb-tracker-interop/src/lib.rs
@@ -48,6 +48,7 @@ pub enum PatternEffect {
     Panning(Num<i16, 4>),
     Volume(Num<i16, 4>),
     VolumeSlide(Num<i16, 4>),
+    NoteCut(u32),
 }
 
 #[cfg(feature = "quote")]
@@ -202,6 +203,7 @@ impl quote::ToTokens for PatternEffect {
                 let amount = amount.to_raw();
                 quote! { VolumeSlide(agb_tracker::__private::Num::from_raw(#amount))}
             }
+            PatternEffect::NoteCut(wait) => quote! { NoteCut(#wait) },
         };
 
         tokens.append_all(quote! {
diff --git a/tracker/agb-tracker/src/lib.rs b/tracker/agb-tracker/src/lib.rs
index f3c1b4c9..79875f2b 100644
--- a/tracker/agb-tracker/src/lib.rs
+++ b/tracker/agb-tracker/src/lib.rs
@@ -208,6 +208,12 @@ impl TrackerChannel {
                         channel.volume(self.volume);
                     }
                 }
+                PatternEffect::NoteCut(wait) => {
+                    if tick == *wait {
+                        channel.volume(0);
+                        self.volume = 0.into();
+                    }
+                }
             }
         }
     }
diff --git a/tracker/agb-xm-core/src/lib.rs b/tracker/agb-xm-core/src/lib.rs
index da3fc4f8..dcf343a0 100644
--- a/tracker/agb-xm-core/src/lib.rs
+++ b/tracker/agb-xm-core/src/lib.rs
@@ -219,6 +219,10 @@ pub fn parse_module(module: &Module) -> TokenStream {
                             PatternEffect::None
                         }
                     }
+                    0xE => match slot.effect_parameter >> 4 {
+                        0xC => PatternEffect::NoteCut((slot.effect_parameter & 0xf).into()),
+                        _ => PatternEffect::None,
+                    },
                     _ => PatternEffect::None,
                 };