fix: add sequence index to generated class names

Prevents compilation errors when multiple sequences share the same name.
Compiler now appends _{index}_Sequence for unique class names.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

3 files changed, 16 insertions, 11 deletions

diff --git a/tools/seq_compiler.py b/tools/seq_compiler.py
index 361aa63..f3a7f16 100755
--- a/tools/seq_compiler.py
+++ b/tools/seq_compiler.py
@@ -363,13 +363,13 @@ def detect_ping_pong(seq: SequenceDecl, sorted_effects: List[EffectDecl]) -> Dic
     return aliases
 
 def generate_cpp(seq: SequenceDecl, sorted_effects: List[EffectDecl],
-                 aliases: Dict[str, str], flatten: bool = False) -> str:
+                 aliases: Dict[str, str], seq_index: int, flatten: bool = False) -> str:
     """Generate C++ Sequence subclass."""
 
     class_name = seq.name.replace(' ', '_').replace('-', '_')
     if not class_name[0].isalpha():
         class_name = 'Seq_' + class_name
-    class_name += 'Sequence'
+    class_name += f'_{seq_index}_Sequence'
 
     # Generate includes
     includes = set()
@@ -465,7 +465,7 @@ def main():
 
 '''
 
-    for seq in sequences:
+    for seq_idx, seq in enumerate(sequences):
         # Validate DAG
         validate_dag(seq)
 
@@ -479,7 +479,7 @@ def main():
         aliases = detect_ping_pong(seq, sorted_effects)
 
         # Generate C++
-        cpp = generate_cpp(seq, sorted_effects, aliases, args.flatten)
+        cpp = generate_cpp(seq, sorted_effects, aliases, seq_idx, args.flatten)
         all_cpp += cpp + '\n'
 
     # Generate sequence registry and accessors
@@ -504,8 +504,11 @@ void InitializeSequences(const GpuContext& ctx, int width, int height) {
 '''
 
     # Instantiate each sequence
-    for seq in sequences:
-        class_name = f"{seq.name}Sequence"
+    for seq_idx, seq in enumerate(sequences):
+        seq_name = seq.name.replace(' ', '_').replace('-', '_')
+        if not seq_name[0].isalpha():
+            seq_name = 'Seq_' + seq_name
+        class_name = f"{seq_name}_{seq_idx}_Sequence"
         all_cpp += f'    g_sequences.push_back({{{seq.start_time}f, {seq.priority}, std::make_unique<{class_name}>(ctx, width, height)}});\n'
 
     all_cpp += '''
diff --git a/workspaces/main/timeline.seq b/workspaces/main/timeline.seq
index 0f40485..77f013d 100644
--- a/workspaces/main/timeline.seq
+++ b/workspaces/main/timeline.seq
@@ -2,14 +2,12 @@
 # BPM 90
 
 SEQUENCE 0.00 0 "intro"
-  # FlashCube (placeholder) -> Vignette -> sink
-  EFFECT + Placeholder source -> temp1 0.00 4.00
-  EFFECT + Placeholder temp1 -> sink 0.00 4.00
+  EFFECT + RotatingCube source -> temp1 0.00 4.00
+  EFFECT + GaussianBlur temp1 -> sink 0.00 4.00
 
 SEQUENCE 4.00 0 "rotating_cube"
-  # RotatingCube -> Blur -> sink
   EFFECT + RotatingCube source -> temp1 0.00 4.00
-  EFFECT + GaussianBlur temp1 -> sink 1.00 4.00
+  EFFECT + Placeholder temp1 -> sink 1.00 4.00
 
 SEQUENCE 8.00 0 "flash_cube"
   # FlashCube (placeholder) -> Flash (placeholder) -> sink
diff --git a/workspaces/test/timeline.seq b/workspaces/test/timeline.seq
index d4b0004..6932d89 100644
--- a/workspaces/test/timeline.seq
+++ b/workspaces/test/timeline.seq
@@ -3,5 +3,9 @@
 # BPM 120 (set in test_demo.track)
 
 SEQUENCE 0.0 0 "MainLoop"
+EFFECT + RotatingCube source -> temp1 0.00 4.00
+EFFECT + GaussianBlur temp1 -> sink 0.00 4.00
+
+SEQUENCE 4.0 0 "MainLoop"
 EFFECT + Flash source -> flash_out 0.0 16.0
 EFFECT + PeakMeter flash_out -> sink 0.0 16.0