Added network skill usage

client/Main.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=28 format=3 uid="uid://b40y7iuskv1ar"]
+[gd_scene load_steps=29 format=3 uid="uid://b40y7iuskv1ar"]
 
 [ext_resource type="Script" path="res://Main.gd" id="1_cw3ws"]
 [ext_resource type="Script" path="res://network/Client.gd" id="2_8hxcx"]
@@ -12,6 +12,7 @@
 [ext_resource type="Script" path="res://network/PlayerJump.gd" id="9_o8sk8"]
 [ext_resource type="Script" path="res://network/Chat.gd" id="10_y3len"]
 [ext_resource type="Script" path="res://world/Sun.gd" id="11_4jb08"]
+[ext_resource type="Script" path="res://network/PlayerUseSkill.gd" id="11_gyiep"]
 [ext_resource type="PackedScene" uid="uid://cpdoq0oh84mfw" path="res://camera/Camera.tscn" id="12_aljdh"]
 [ext_resource type="Environment" uid="uid://dixa0yso2s1u3" path="res://world/Environment.tres" id="12_cscto"]
 [ext_resource type="Script" path="res://world/Generate.gd" id="15_25nmg"]
@@ -90,6 +91,10 @@ packet_type = 12
 script = ExtResource("9_o8sk8")
 packet_type = 13
 
+[node name="PlayerUseSkill" type="Node" parent="Client"]
+script = ExtResource("11_gyiep")
+packet_type = 14
+
 [node name="Chat" type="Node" parent="Client"]
 unique_name_in_owner = true
 script = ExtResource("10_y3len")

client/network/Chat.gd

@@ -4,7 +4,7 @@ signal message_received(message: String)
 
 func send_message(message: String):
 	var buffer := StreamPeerBuffer.new()
-	buffer.put_8(Packet.CHAT)
+	buffer.put_u8(Packet.CHAT)
 	buffer.put_data(message.to_utf8_buffer())
 	%Client.send(buffer.data_array)
 

client/network/Login.gd

@@ -24,7 +24,7 @@ func send_login():
 	
 	var password := "password".sha256_text()
 	var buffer := StreamPeerBuffer.new()
-	buffer.put_8(Packet.LOGIN)
+	buffer.put_u8(Packet.LOGIN)
 	buffer.put_data(JSON.stringify([Global.username, password]).to_utf8_buffer())
 	%Client.send(buffer.data_array)
 	print("[%s] Connecting..." % Global.username)

client/network/Ping.gd

@@ -17,8 +17,8 @@ func handle_packet(data: PackedByteArray):
 
 func send_ping():
 	var buffer := StreamPeerBuffer.new()
-	buffer.put_8(Packet.PING)
-	buffer.put_8(count)
+	buffer.put_u8(Packet.PING)
+	buffer.put_u8(count)
 	%Client.send(buffer.data_array)
 	history[count] = get_time()
 	count = (count + 1) % HISTORY_SIZE

client/network/PlayerJump.gd

@@ -8,7 +8,7 @@ func on_main_player_spawned(player: Player):
 
 func on_jump():
 	var buffer := StreamPeerBuffer.new()
-	buffer.put_8(PacketHandler.Packet.PLAYER_JUMP)
+	buffer.put_u8(PacketHandler.Packet.PLAYER_JUMP)
 	%Client.send(buffer.data_array)
 
 func handle_packet(data: PackedByteArray):

client/network/PlayerMove.gd

@@ -46,7 +46,7 @@ func _physics_process(_delta):
 
 func send_position():
 	var buffer := StreamPeerBuffer.new()
-	buffer.put_8(PacketHandler.Packet.PLAYER_MOVE)
+	buffer.put_u8(PacketHandler.Packet.PLAYER_MOVE)
 	buffer.put_float(Global.player.position.x)
 	buffer.put_float(Global.player.position.z)
 	buffer.put_float(Global.player.movement.direction.x)

client/network/PlayerUseSkill.gd

@@ -0,0 +1,24 @@
+extends PacketHandler
+
+func _ready():
+	%PlayerAdd.main_player_spawned.connect(on_main_player_spawned)
+
+func on_main_player_spawned(player: Player):
+	player.controller.used_skill.connect(on_skill_used)
+
+func on_skill_used(slot: int):
+	var buffer := StreamPeerBuffer.new()
+	buffer.put_u8(PacketHandler.Packet.PLAYER_USE_SKILL)
+	buffer.put_u8(slot)
+	%Client.send(buffer.data_array)
+
+func handle_packet(data: PackedByteArray):
+	var buffer := StreamPeerBuffer.new()
+	buffer.data_array = data
+
+	var player_id_length := buffer.get_size() - 1
+	var player_id := buffer.get_string(player_id_length)
+	var slot := buffer.get_u8()
+
+	var player := Global.players.get_player(player_id)
+	player.controller.used_skill.emit(slot)

client/network/shared/PacketHandler.gd

@@ -10,7 +10,7 @@ enum Packet {
 	PLAYER_REMOVE = 11,
 	PLAYER_MOVE = 12,
 	PLAYER_JUMP = 13,
-	PLAYER_ATTACK = 14,
+	PLAYER_USE_SKILL = 14,
 	CHAT = 20,
 }
 

client/project.godot

@@ -37,10 +37,6 @@ window/stretch/mode="canvas_items"
 window/stretch/aspect="expand"
 window/vsync/vsync_mode=0
 
-[editor]
-
-run/main_run_args="--offline"
-
 [gui]
 
 theme/custom="res://ui/theme/theme.tres"

server/game/Game.go

@@ -32,6 +32,7 @@ func NewRouter(game *Game) *Router {
 	router.Get(Login, game.Login)
 	router.Get(PlayerMove, game.Move)
 	router.Get(PlayerJump, game.Jump)
+	router.Get(PlayerUseSkill, game.UseSkill)
 	router.Get(Chat, game.Chat)
 	return router
 }

server/game/Packet.go

@@ -6,15 +6,15 @@ import (
 
 // Byte prefixes to indicate the packet type.
 const (
-	Ping         = 1
-	Login        = 2
-	Logout       = 3
-	PlayerAdd    = 10
-	PlayerRemove = 11
-	PlayerMove   = 12
-	PlayerJump   = 13
-	PlayerAttack = 14
-	Chat         = 20
+	Ping           = 1
+	Login          = 2
+	Logout         = 3
+	PlayerAdd      = 10
+	PlayerRemove   = 11
+	PlayerMove     = 12
+	PlayerJump     = 13
+	PlayerUseSkill = 14
+	Chat           = 20
 )
 
 // Packet represents a single UDP datagram.

server/game/UseSkill.go

@@ -0,0 +1,30 @@
+package game
+
+import (
+	"errors"
+	"net"
+)
+
+var (
+	ErrInvalidPacketLength = errors.New("invalid packet length")
+)
+
+// UseSkill tries to use a player skill.
+func (game *Game) UseSkill(data []byte, address *net.UDPAddr) error {
+	player := game.players.ByAddress(address)
+
+	if player == nil {
+		return ErrUnknownAddress
+	}
+
+	if len(data) != 1 {
+		return ErrInvalidPacketLength
+	}
+
+	slot := data[0]
+	broadcast := []byte(player.ID)
+	broadcast = append(broadcast, slot)
+
+	game.BroadcastOthers(PlayerUseSkill, broadcast, player)
+	return nil
+}