workshop rework

tools/progress_display.py

@@ -0,0 +1,63 @@
+"""Concise console progress; does not depend on Unreal or its log format."""
+import json
+from pathlib import Path
+import time
+
+
+class ProgressDisplay:
+    LABELS = {
+        "starting": "Uruchamianie UE...",
+        "preparing": "Przygotowywanie sceny i sekwencji...",
+        "preparing_render": "Przygotowywanie renderu...",
+        "rendering": "Renderowanie...",
+        "encoding": "Render zakonczony. Skladanie MP4...",
+        "closing": "Zamykanie UE...",
+    }
+
+    def __init__(self, events, clock=time.monotonic, emit=print):
+        self.events = Path(events)
+        self.clock, self.emit = clock, emit
+        self.started = self.last_print = clock()
+        self.position = 0
+        self.pending = b""
+        self.state = "starting"
+        self.details = {}
+        self.last_count = -1
+        self.show(self.LABELS[self.state])
+
+    def show(self, message):
+        seconds = int(self.clock() - self.started)
+        self.emit(f"[{seconds // 60:02d}:{seconds % 60:02d}] {message}", flush=True)
+        self.last_print = self.clock()
+
+    def update(self):
+        try:
+            with self.events.open("rb") as stream:
+                stream.seek(self.position)
+                self.pending += stream.read()
+                self.position = stream.tell()
+        except FileNotFoundError:
+            pass
+        while b"\n" in self.pending:
+            line, self.pending = self.pending.split(b"\n", 1)
+            try:
+                event = json.loads(line)
+            except (ValueError, UnicodeError):
+                continue
+            state = event.get("state")
+            if state in self.LABELS:
+                self.state, self.details = state, event
+                self.last_count = -1
+                self.show(self.LABELS[state])
+        elapsed = self.clock() - self.last_print
+        if self.state == "rendering" and elapsed >= 2:
+            output = self.details.get("output")
+            total = self.details.get("frames")
+            if output and total:
+                count = len(list((Path(output) / "frames").glob("frame_*.png")))
+                if count != self.last_count and count > 0:
+                    self.last_count = count
+                    self.show(f"Renderowanie: {count}/{total} klatek zapisanych.")
+                    return
+        if elapsed >= 10:
+            self.show(self.LABELS[self.state] + " Nadal pracuje.")