Game: Begin state machine implementation; use Net-mail for host<->guest communication.

godot_ship/script/game/Gameplay/Game.gd

@@ -1,8 +1,11 @@
 extends Control
 
-var light_theme = load("res://light_theme.tres")
-var dark_theme = load("res://dark_theme.tres")
+# warning-ignore-all:unused_signal
 
+# Signals
+signal fire # fire(position)
+signal hit  # hit (state: see Miss/Ready/Hit/Sunk enum in Board.gd)
+signal win  # win (): sent when opponent player lost
 
 # Path to Player class, for instantiating new Players in code
 var Player = preload("res://scenes/Game/Player.tscn")
@@ -11,7 +14,7 @@ var Victory = preload("res://scenes/Game/Victory.tscn")
 
 
 # Array of instances of the Player class; stores the Players
-var players = [] # = player1, player2, ...
+var player
 var players_ready = []
 # turn counter
 var turn = 0
@@ -37,6 +40,7 @@ func _ready():
 # Function used to keep track of which players are ready
 # TODO: Change this to keep track of ready states only
 func player_ready():
+	players_ready.append(Net.get_network_id())
 	pass
 
 # Member functions:
@@ -49,15 +53,84 @@ sync func game_setup():
 	network_id = Net.get_network_id()
 	pass
 
-#   game_start:
+#   game_start: Runs on host. Controls the game.
 func game_start():
+	var state = "P1_fire"
 	# Make sure we're the server
+	while true:
+		match state:
+			"P1_fire":
+				# Tell local player to fire
+
+				# Wait for result
+
+				# Send fire REQUEST to P2
+				pass
+			"P2_check":
+				# Wait for hit
+				var ret = yield(self, "hit")
+				# Record the hit
+
+				#
+				pass
+			"P2_fire":
+				pass
+			"P1_check":
+				# Check if
+				pass
+			"P1_win":
+				pass
+			"P2_win":
+				pass
 	pass
 
+func fire_on(id, pos:Vector2):
+	# REQUEST fire on opponent
+	Net.send(id, ["fire", pos], Net.REQUEST)
+	# Wait for REPLY
+
+func return_hit(id, ship_status):
+
+	Net.send(id, ["hit", ship_status], Net.REPLY)
+
+func _on_win():
+	pass
+
+func _on_Net_incoming(mail):
+	if mail.size() == 3:
+		var sender   = mail[0]
+		var message  = mail[1]
+		var mailtype = mail[2]
+		match mailtype:
+			# if message is a REQUEST (to perform an action)
+			Net.REQUEST:
+				match message[0]:
+					# Opponent asks for player.fire()
+					"fire":
+						emit_signal("fire", message[1])
+					# Opponent asks for hit(pos)
+					"hit":
+						pass
+					_:
+						pass
+			Net.REPLY:
+					# message is a REPLY (return value)
+				match message[0]:
+					"fire":
+						emit_signal("hit", message[1])
+					# Return value of
+					"hit":
+						pass
+				pass
+			Net.READY:
+				# Add player to the ready array
+				players_ready.append(sender)
+				pass
+
 #   _on_player_ready: Player Ready signal handler
 func _on_player_ready():
 	print ("_on_player_ready")
-	Net.send(1, ["player_ready", Net.Mail.REPLY])
+	Net.send(1, [], Net.READY)
 
 #   victory_screen: display the victory screen
 func victory_screen():