workshop rework

tools/smoke_editor_render.py

@@ -0,0 +1,62 @@
+"""Exercise real Sequencer UI ticks, rebuild, render, then render again in one editor."""
+import json
+import os
+import traceback
+
+import unreal
+
+from ue_workshop import render
+from ue_workshop.paths import PROJECT
+
+unreal.EditorPythonScripting.set_keep_python_script_alive(True)
+# The test owns shutdown; allow multiple renders in the same editor process.
+os.environ["WORKSHOP_BATCH"] = "0"
+code = (PROJECT / "exercises/my_shot.py").read_text(encoding="utf-8")
+code = code.replace("RENDER = True", "RENDER = False")
+state = {"stage": 0, "ticks": 0, "outputs": []}
+
+
+def build():
+    namespace = {"__name__": "__main__"}
+    exec(compile(code, "my_shot.py", "exec"), namespace)
+    return namespace
+
+
+namespace = build()
+
+
+def tick(delta):
+    global namespace
+    state["ticks"] += 1
+    try:
+        if state["stage"] in {0, 2} and state["ticks"] >= 30:
+            # The previous sequence editor has ticked before its actors and
+            # bindings are replaced, matching repeated Execute Python Script.
+            next_stage = state["stage"] + 1
+            # Asset saves can pump Slate recursively. Do not re-enter the test.
+            state["stage"] = -1
+            namespace = build()
+            output = render.start(namespace["shot"], mp4=True)
+            state["outputs"].append(output)
+            state["stage"] = next_stage
+        elif state["stage"] in {1, 3} and not render.is_rendering():
+            result = json.loads((state["outputs"][-1] / "result.json").read_text())
+            assert result["success"], result
+            if state["stage"] == 3:
+                finish({"success": True, "renders": [str(path) for path in state["outputs"]]})
+            else:
+                unreal.LevelSequenceEditorBlueprintLibrary.open_level_sequence(namespace["shot"].asset)
+                state["stage"] = 2
+                state["ticks"] = 0
+    except Exception:
+        finish({"success": False, "error": traceback.format_exc()})
+
+
+def finish(result):
+    unreal.unregister_slate_post_tick_callback(handle)
+    render._write_status(result)
+    unreal.log("[Workshop UI test] " + str(result))
+    unreal.EditorPythonScripting.set_keep_python_script_alive(False)
+
+
+handle = unreal.register_slate_post_tick_callback(tick)