1 files changed, 40 insertions, 1 deletions
diff --git a/src/main.cc b/src/main.cc
index 0fb0fb6..a3e4a69 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -6,10 +6,12 @@
 #include "audio/audio.h"
 #include "audio/audio_engine.h"
 #include "audio/gen.h"
+#include "audio/ring_buffer.h"
 #include "audio/synth.h"
 #include "audio/tracker.h"
 #if !defined(STRIP_ALL)
 #include "audio/wav_dump_backend.h"
+#include <vector>
 #endif
 #include "generated/assets.h" // Include generated asset header
 #include "gpu/demo_effects.h" // For GetDemoDuration()
@@ -163,8 +165,45 @@ int main(int argc, char** argv) {
   audio_start();
 
 #if !defined(STRIP_ALL)
-  // In WAV dump mode, audio_start() renders everything and we can exit
+  // In WAV dump mode, run headless simulation and write audio to file
   if (dump_wav) {
+    printf("Running WAV dump simulation...\n");
+
+    const float demo_duration = GetDemoDuration();
+    const float max_duration = (demo_duration > 0.0f) ? demo_duration : 60.0f;
+    const float update_dt = 1.0f / 60.0f; // 60Hz update rate
+    const int frames_per_update = (int)(32000 * update_dt); // ~533 frames
+    const int samples_per_update = frames_per_update * 2; // Stereo
+
+    AudioRingBuffer* ring_buffer = audio_get_ring_buffer();
+    std::vector<float> chunk_buffer(samples_per_update);
+
+    double physical_time = 0.0;
+    while (physical_time < max_duration) {
+      // Update music time and tracker (using tempo logic from fill_audio_buffer)
+      fill_audio_buffer(physical_time);
+
+      // Read rendered audio from ring buffer
+      if (ring_buffer != nullptr) {
+        ring_buffer->read(chunk_buffer.data(), samples_per_update);
+      }
+
+      // Write to WAV file
+      wav_backend.write_audio(chunk_buffer.data(), samples_per_update);
+
+      physical_time += update_dt;
+
+      // Progress indicator every second
+      if ((int)physical_time % 1 == 0 && physical_time - update_dt < (int)physical_time) {
+        printf("  Rendering: %.1fs / %.1fs (music: %.1fs, tempo: %.2fx)\r",
+               physical_time, max_duration, g_music_time, g_tempo_scale);
+        fflush(stdout);
+      }
+    }
+
+    printf("\nWAV dump complete: %.2fs physical, %.2fs music time\n",
+           physical_time, g_music_time);
+
     audio_shutdown();
     gpu_shutdown();
     platform_shutdown(&platform_state);