Added TrackStart event and TYPE_CHECKING.

This commit bumps Wavelinks' minimum required Python version to 3.7+.

wavelink/events.py

@@ -20,11 +20,14 @@
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.
 """
-from .player import Player
-from .player import Track
+from __future__ import annotations
+from typing import TYPE_CHECKING
+if TYPE_CHECKING:
+    from .player import Player
+    from .player import Track
 
 
-__all__ = ('WavelinkEvent', 'TrackEnd', 'TrackException', 'TrackStuck')
+__all__ = ('WavelinkEvent', 'TrackEnd', 'TrackException', 'TrackStuck', 'TrackStart')
 
 
 class WavelinkEvent:
@@ -89,3 +92,19 @@ def __init__(self, player: Player, track: Track, threshold: int):
 
     def __str__(self):
         return 'TrackStuck'
+
+
+class TrackStart(WavelinkEvent):
+    """Event dispatched on TrackStart.
+
+    :ivar player: The :class:`wavelink.player.Player` associated with the event.
+    :ivar track: The :class:`wavelink.player.Track` associated with the event.
+    """
+
+    __slots__ = ()
+
+    def __init__(self, player: Player, track: Track):
+        super().__init__(player, track)
+
+    def __str__(self):
+        return 'TrackStart'

wavelink/player.py

@@ -28,6 +28,7 @@
 
 from .errors import *
 from .eqs import *
+from .events import TrackStart
 
 
 __log__ = logging.getLogger(__name__)
@@ -243,6 +244,8 @@ async def play(self, track: Track, *, replace: bool = True, start: int = 0, end:
             payload['endTime'] = str(end)
 
         await self.node._send(**payload)
+        self.bot.loop.create_task(self.node.on_event(TrackStart(player=self, track=track)))
+
         __log__.debug(f'PLAYER | Started playing track:: {str(track)} ({self.channel_id})')
 
     async def stop(self):