From c2f1900a5118c8772584d4391c4a7cb84a834894 Mon Sep 17 00:00:00 2001
From: Bad Diode <bd@badd10de.dev>
Date: Fri, 2 Feb 2024 10:27:36 +0100
Subject: Fix behaviour of CH3 decay on change

---
 src/drawing.c     | 12 ++++++++++--
 src/renderer_m0.c | 10 ++++++++++
 src/sequencer.c   | 18 ++++++++++++++++--
 3 files changed, 36 insertions(+), 4 deletions(-)

diff --git a/src/drawing.c b/src/drawing.c
index fa20467..16a914a 100644
--- a/src/drawing.c
+++ b/src/drawing.c
@@ -2004,10 +2004,18 @@ draw_notif_bar() {
                     }
                 } break;
                 case 7: {
-                    txt_drawf_small("ATTACK: %d", x0 + 2, y0 + 1, color, params->wave_attack);
+                    if (params->wave_attack) {
+                        txt_drawf_small("ATTACK: %d", x0 + 2, y0 + 1, color, params->wave_attack);
+                    } else {
+                        txt_draws_small("ATTACK: OFF", x0 + 2, y0 + 1, color, params->wave_decay);
+                    }
                 } break;
                 case 8: {
-                    txt_drawf_small("DECAY: %d", x0 + 2, y0 + 1, color, params->wave_decay);
+                    if (params->wave_decay) {
+                        txt_drawf_small("DECAY: %d", x0 + 2, y0 + 1, color, params->wave_decay);
+                    } else {
+                        txt_draws_small("DECAY: OFF", x0 + 2, y0 + 1, color, params->wave_decay);
+                    }
                 } break;
                 case 9: { draw_notif_param_edit_pan(params->pan, x0, y0, color); } break;
             }
diff --git a/src/renderer_m0.c b/src/renderer_m0.c
index 064cc0e..d8d0adb 100644
--- a/src/renderer_m0.c
+++ b/src/renderer_m0.c
@@ -780,6 +780,16 @@ txt_drawc_small(char c, size_t x, size_t y, u8 clr) {
     draw_icn(x, y, tile + 8 * c, clr, 1, 0);
 }
 
+#define txt_draws_small(msg, x, y, clr, ...) \
+	{ \
+		u8 tmp = text_engine.spacing;\
+        txt_spacing(4);\
+        text_engine.drawc = txt_drawc_small;\
+		txt_draws(msg, x, y, clr); \
+        txt_spacing(tmp);\
+        text_engine.drawc = txt_drawc;\
+	}
+
 #define txt_drawf_small(msg, x, y, clr, ...) \
 	{ \
 		char buf[256] = {0}; \
diff --git a/src/sequencer.c b/src/sequencer.c
index 7275fbe..a3b72a8 100644
--- a/src/sequencer.c
+++ b/src/sequencer.c
@@ -315,7 +315,7 @@ play_step(void) {
         case SYNC_OUT_AUDIO_2BPQ:
         case SYNC_OUT_LINK_AUDIO_12BPQ:
         case SYNC_OUT_LINK_AUDIO_6BPQ:
-        case SYNC_OUT_LINK_AUDIO_4BPQ: 
+        case SYNC_OUT_LINK_AUDIO_4BPQ:
         case SYNC_OUT_LINK_AUDIO_2BPQ: break;
         default: {
             SOUND_DMG_MASTER = dmg_stereo_vol(3)
@@ -1381,7 +1381,21 @@ set_param_selection_wave(ChannelWaveParams *params, InputHandler return_handler)
             case 5: { params->wave_mode = CLAMP(params->wave_mode + inc, 0, 2); } break;
             case 6: { params->wave_volume = CLAMP(params->wave_volume + inc, 0, 4); } break;
             case 7: { params->wave_attack = CLAMP(params->wave_attack + inc, 0, 16); } break;
-            case 8: { params->wave_decay = CLAMP(params->wave_decay + inc, 0, 16); } break;
+            case 8: {
+                if (params->wave_decay == 16) {
+                    if (inc > 0) {
+                        params->wave_decay = 0;
+                    } else {
+                        params->wave_decay--;
+                    }
+                } else if (params->wave_decay == 0) {
+                    if (inc < 0) {
+                        params->wave_decay = 16;
+                    }
+                } else {
+                    params->wave_decay = CLAMP(params->wave_decay + inc, 1, 16);
+                }
+            } break;
             case 9: { params->pan = CLAMP(params->pan + inc, -1, 1); } break;
         }
         redraw_params = true;
-- 
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