From a4b53ccac85439ae763150f8db55581844e42b7c Mon Sep 17 00:00:00 2001
From: Paul Walker <paul@pwjw.com>
Date: Mon, 16 Sep 2024 19:54:36 -0400
Subject: [PATCH] Give teh AHDSR an option to attack straight to hold

which allows clients to skip the attack altogether for zero-length
attacks
---
 .../basic-blocks/modulators/AHDSRShapedSC.h    | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/include/sst/basic-blocks/modulators/AHDSRShapedSC.h b/include/sst/basic-blocks/modulators/AHDSRShapedSC.h
index f531edc..94e82f7 100644
--- a/include/sst/basic-blocks/modulators/AHDSRShapedSC.h
+++ b/include/sst/basic-blocks/modulators/AHDSRShapedSC.h
@@ -78,11 +78,21 @@ struct AHDSRShapedSC : DiscreteStagesEnvelope<BLOCK_SIZE, RangeProvider>
         lutsInitialized = true;
     }
 
-    inline void attackFrom(float fv)
+    inline void attackFrom(float fv, bool skipAttack = false)
     {
-        phase = 0;
-        attackStartValue = fv;
-        this->stage = base_t::s_attack;
+        if (skipAttack)
+        {
+            phase = 0;
+            attackStartValue = fv;
+            this->outBlock0 = 1.0;
+            this->stage = base_t::s_hold;
+        }
+        else
+        {
+            phase = 0;
+            attackStartValue = fv;
+            this->stage = base_t::s_attack;
+        }
     }
 
     inline float dPhase(float x)