Add initial pattern chain UI

1 files changed, 29 insertions, 0 deletions

diff --git a/src/sequencer.c b/src/sequencer.c
index 5b70bb2..44ff90e 100644
--- a/src/sequencer.c
+++ b/src/sequencer.c
@@ -520,6 +520,35 @@ handle_pattern_selection(void) {
             default: { right_col_selection_loc = R_COL_BPM; } break;
         }
     }
+    if (key_tap(KEY_R)) {
+        // Find next empty slot.
+        s16 slot = -1;
+        for (size_t i = 0; i < 16; i++) {
+            if (chain.active[i] == 0) {
+                slot = i;
+                break;
+            }
+        }
+        if (slot > -1) {
+            chain.chain[slot] = pattern_selection_loc;
+            chain.active[slot] = 1;
+            chain.len++; // TODO: remove
+        }
+    }
+    if (key_tap(KEY_L)) {
+        // Find last active slot.
+        s16 slot = -1;
+        for (size_t i = 0; i < 16; i++) {
+            if (chain.active[15 - i] == 1) {
+                slot = 15 - i;
+                break;
+            }
+        }
+        if (slot > -1) {
+            chain.active[slot] = 0;
+            chain.len--; // TODO: remove
+        }
+    }
 }
 
 bool