demo_game.gd

@@ -13,6 +13,7 @@ signal opponent_played_rts(move: String)
 @onready var own_side = $Own
 @onready var opponent_side = $Opponent
 @onready var start_game_btn = $StartGameButton
+@onready var win_lose_tie_label: Label = $"Win-Lose-Tie"
 
 var id_to_card: Dictionary = {}
 
@@ -65,6 +66,10 @@ func _on_match_manager_state_transitioned(transition: PhaseTransition):
 	start_game_btn.visible = match_manager.phase == Match.Phase.PREGAME
 	transition_history.append(transition)
 	_update_phase_info(transition.to)
+	if transition.to == Match.Phase.END:
+		var game_ended_event: EventGameEnded = transition.events.filter(func (it): return it is EventGameEnded)[0]
+		win_lose_tie_label.text = "TIE" if game_ended_event.winner_player_id == -1 else "YOU WON!" if game_ended_event.winner_player_id == id else "YOU LOST!"
+		win_lose_tie_label.visible = true
 	print("Phase: ", Match.phase_to_str(transition.from), " -> ", Match.phase_to_str(transition.to))
 	
 func _on_start_game_button_button_up() -> void:

demo_game.tscn

@@ -338,6 +338,26 @@ theme = ExtResource("19_3iovu")
 theme_override_font_sizes/font_size = 24
 text = "Support (2)"
 
+[node name="Win-Lose-Tie" type="Label" parent="."]
+visible = false
+layout_mode = 1
+anchors_preset = 8
+anchor_left = 0.5
+anchor_top = 0.5
+anchor_right = 0.5
+anchor_bottom = 0.5
+offset_left = -365.0
+offset_top = -215.0
+offset_right = 365.0
+offset_bottom = 215.0
+grow_horizontal = 2
+grow_vertical = 2
+theme = ExtResource("19_3iovu")
+theme_override_font_sizes/font_size = 52
+text = "YOU WON!"
+horizontal_alignment = 1
+vertical_alignment = 1
+
 [connection signal="play_card" from="Own" to="." method="_on_own_play_card"]
 [connection signal="rps_move" from="Own" to="." method="_on_own_rps_move"]
 [connection signal="button_down" from="Own/HBoxContainer/KertasButton" to="Own" method="_on_kertas_button_button_down"]

tcg/match/event/event_game_ended.gd

@@ -0,0 +1,7 @@
+extends Event
+class_name EventGameEnded
+
+var winner_player_id: int
+
+func _init(winner_player_id: int) -> void:
+	self.winner_player_id = winner_player_id

tcg/match/match_manager.gd

@@ -172,6 +172,7 @@ func resolve(action_by_player_id: Dictionary) -> PhaseTransition:
 				player.active_support_cards = player.active_support_cards.filter(func (card): return not card_expires_this_turn.call(card))
 			
 			var players_without_monster = players.values().filter(func(player): return player.monster == null)
+			var players_without_monster_ids = players_without_monster.map(func (it): return it.id)
 			if players_without_monster.size() == 0:
 				phase = Match.Phase.SUPPORT_1
 			elif players_without_monster.all(
@@ -179,7 +180,11 @@ func resolve(action_by_player_id: Dictionary) -> PhaseTransition:
 			):
 				phase = Match.Phase.SUMMON
 			else:
+				var player_1_lost = players_without_monster_ids.has(player_1.id)
+				var player_2_lost = players_without_monster_ids.has(player_2.id)
+				var winner_id = -1 if player_1_lost and player_2_lost else player_1.id if player_2_lost else player_2.id 
 				phase = Match.Phase.END
+				events.append(EventGameEnded.new(winner_id))
 		_:
 			pass
 	var transition = PhaseTransition.new(events, initial_phase, phase)