Slapping in the mix.

client/client/client.go

@@ -49,6 +49,7 @@ func (c *Client) SendBuffer(conn net.Conn, buf []byte) {
 
 func (c *Client) ReadData(callback func(*pb.ServerEnvelope)) {
 
+	if c.connected {
 		for {
 			lengthBuf := make([]byte, 4)
 			_, err := io.ReadFull(c.conn, lengthBuf)
@@ -78,6 +79,7 @@ func (c *Client) ReadData(callback func(*pb.ServerEnvelope)) {
 			}
 
 		}
+	}
 
 }
 

client/elements/block.go

@@ -3,6 +3,7 @@ package elements
 import (
 	"client/gamedata"
 	"image/color"
+	"math"
 
 	"github.com/hajimehoshi/ebiten/v2"
 )
@@ -11,6 +12,7 @@ type Block struct {
 	Sprite   *ebiten.Image
 	cycle    int
 	position gamedata.Coordinates
+	target   gamedata.Coordinates
 	hit      bool
 }
 
@@ -22,6 +24,17 @@ func NewBlock() *Block {
 }
 
 func (b *Block) Update() {
+
+	dx := b.target.X - b.position.X
+	dy := b.target.Y - b.position.Y
+
+	delta := math.Sqrt(dx*dx + dy*dy)
+	angle := math.Atan2(dy, dx)
+	if delta > 0.5 {
+		b.position.X += delta * math.Cos(angle) / 2
+		b.position.Y += delta * math.Sin(angle) / 2
+	}
+
 	b.cycle++
 }
 
@@ -42,6 +55,14 @@ func (b *Block) GetPosition() gamedata.Coordinates {
 	return b.position
 }
 
+func (b *Block) SetTargetPosition(pos gamedata.Coordinates) {
+	b.target = pos
+}
+
+func (b *Block) GetTargetosition() gamedata.Coordinates {
+	return b.target
+}
+
 func (b *Block) SetHit(hit bool) {
 	b.hit = hit
 }

client/game/game.go

@@ -8,10 +8,12 @@ import (
 	"client/pb"
 	"fmt"
 	"maps"
+	"math"
 	"sync"
 	"time"
 
 	"github.com/hajimehoshi/ebiten/v2"
+	"github.com/hajimehoshi/ebiten/v2/inpututil"
 	"github.com/hajimehoshi/ebiten/v2/text/v2"
 	"golang.org/x/exp/rand"
 )
@@ -21,7 +23,13 @@ var (
 	screenHeight  = 480
 	movementLimit = 5
 
-	namelist = []string{"slappy", "mick", "rodney", "george", "ringo", "robin", "temitry "}
+	namelist = []string{"slappy", "mick", "rodney", "george", "ringo",
+		"robin", "temitry", "evangeline", "ron", "abigail", "lester",
+		"maynard", "agnes", "stacey", "wendell", "susanne", "myrtle",
+		"teresa", "kristi", "genos", "felton", "lawrence", "rosie",
+		"nigel", "constance", "maryellen", "dollie", "markus",
+		"dorthy", "lazaro", "willa", "dino", "gustavo", "conrad",
+		"georgia", "lucinda", "saitama"}
 )
 
 func init() {
@@ -59,6 +67,7 @@ func NewGame() *Game {
 	g.hitblocky.SetHit(true)
 
 	g.blocky.SetPosition(gamedata.Coordinates{X: float64(screenWidth) / 2, Y: float64(screenHeight) / 2})
+	g.blocky.SetTargetPosition(gamedata.Coordinates{X: float64(screenWidth) / 2, Y: float64(screenHeight) / 2})
 
 	g.realclients = make(map[int]ClientData)
 
@@ -69,29 +78,11 @@ func NewGame() *Game {
 
 func (g *Game) Update() error {
 
+	g.blocky.Update()
+	//g.hitblocky.Update()
+
 	g.HandleInput()
-
+	g.SendPosition()
-	//broadcast our position
-	//if g.cycle%2 == 0 {
-	if g.gameclient.IsConnected() {
-		cd := &pb.ClientCoordinates{
-			Name: g.name,
-			Coordinates: &pb.Coordinates{
-				X: g.blocky.GetPosition().X, //g.position.X,
-				Y: g.blocky.GetPosition().Y, //g.position.Y,
-			},
-		}
-
-		envelope := &pb.ClientEnvelope{
-			Payload: &pb.ClientEnvelope_Coordinates{
-				Coordinates: cd,
-			},
-		}
-
-		g.gameclient.SendMessage(envelope)
-
-	}
-	//}
 
 	g.cycle++
 	return nil
@@ -180,8 +171,39 @@ func (g *Game) HandleServerData(envelope *pb.ServerEnvelope) {
 			delete(g.realclients, int(payload.Event.Id))
 		}
 	case *pb.ServerEnvelope_Identity:
-		fmt.Println("Server is trying to give us our id.")
+		fmt.Println("Server is trying to give us our id: ", payload.Identity.Id)
 		g.gameId = int(payload.Identity.Id)
+	case *pb.ServerEnvelope_Gameevent:
+		fmt.Printf("someone slapping! target:%d, instigator:%d isSlap:%d", payload.Gameevent.Target, payload.Gameevent.Instigator, payload.Gameevent.Slap)
+
+		if payload.Gameevent.Target == int32(g.gameId) {
+			g.mu.Lock()
+			dx := g.blocky.GetPosition().X - g.realclients[int(payload.Gameevent.Instigator)].Position.X
+			dy := g.blocky.GetPosition().Y - g.realclients[int(payload.Gameevent.Instigator)].Position.Y
+			g.mu.Unlock()
+
+			if dx != 0 {
+				dx = (dx / math.Abs(dx)) * 100
+			}
+			if dy != 0 {
+				dy = (dy / math.Abs(dy)) * 100
+			}
+			if dx == 0 && dy == 0 {
+				b := rand.Intn(2)
+				if b == 0 {
+					dx = 100
+					dy = 100
+				} else {
+					dx = -100
+					dy = -100
+				}
+			}
+
+			cpos := gamedata.Coordinates{}
+			cpos.X = g.blocky.GetPosition().X + dx
+			cpos.Y = g.blocky.GetPosition().Y + dy
+			g.blocky.SetTargetPosition(cpos)
+		}
 	}
 }
 
@@ -201,8 +223,50 @@ func (g *Game) HandleInput() {
 	if ebiten.IsKeyPressed(ebiten.KeyD) {
 		dx = +movementLimit
 	}
+
 	cpos := g.blocky.GetPosition()
 	cpos.X += float64(dx)
 	cpos.Y += float64(dy)
-	g.blocky.SetPosition(cpos)
+	g.blocky.SetTargetPosition(cpos)
+
+	if inpututil.IsKeyJustPressed(ebiten.KeySpace) {
+		g.SendSlap()
+	}
+
+}
+
+func (g *Game) SendPosition() {
+	//broadcast our position
+	if g.gameclient.IsConnected() {
+		cd := &pb.ClientCoordinates{
+			Name: g.name,
+			Coordinates: &pb.Coordinates{
+				X: g.blocky.GetPosition().X, //g.position.X,
+				Y: g.blocky.GetPosition().Y, //g.position.Y,
+			},
+		}
+
+		envelope := &pb.ClientEnvelope{
+			Payload: &pb.ClientEnvelope_Coordinates{
+				Coordinates: cd,
+			},
+		}
+
+		g.gameclient.SendMessage(envelope)
+	}
+}
+
+func (g *Game) SendSlap() {
+	if g.gameclient.IsConnected() {
+		slap := &pb.SlapEvent{
+			Slap: true,
+		}
+		envelope := &pb.ClientEnvelope{
+			Payload: &pb.ClientEnvelope_Slap{
+				Slap: slap,
+			},
+		}
+
+		g.gameclient.SendMessage(envelope)
+	}
 }

client/pb/clientdata.pb.go

@@ -350,6 +350,7 @@ type ClientEnvelope struct {
 	// Types that are assignable to Payload:
 	//
 	//	*ClientEnvelope_Coordinates
+	//	*ClientEnvelope_Slap
 	Payload isClientEnvelope_Payload `protobuf_oneof:"Payload"`
 }
 
@@ -397,6 +398,13 @@ func (x *ClientEnvelope) GetCoordinates() *ClientCoordinates {
 	return nil
 }
 
+func (x *ClientEnvelope) GetSlap() *SlapEvent {
+	if x, ok := x.GetPayload().(*ClientEnvelope_Slap); ok {
+		return x.Slap
+	}
+	return nil
+}
+
 type isClientEnvelope_Payload interface {
 	isClientEnvelope_Payload()
 }
@@ -405,8 +413,59 @@ type ClientEnvelope_Coordinates struct {
 	Coordinates *ClientCoordinates `protobuf:"bytes,1,opt,name=coordinates,proto3,oneof"`
 }
 
+type ClientEnvelope_Slap struct {
+	Slap *SlapEvent `protobuf:"bytes,2,opt,name=slap,proto3,oneof"`
+}
+
 func (*ClientEnvelope_Coordinates) isClientEnvelope_Payload() {}
 
+func (*ClientEnvelope_Slap) isClientEnvelope_Payload() {}
+
+type SlapEvent struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Slap bool `protobuf:"varint,1,opt,name=Slap,proto3" json:"Slap,omitempty"`
+}
+
+func (x *SlapEvent) Reset() {
+	*x = SlapEvent{}
+	mi := &file_clientdata_proto_msgTypes[6]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *SlapEvent) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SlapEvent) ProtoMessage() {}
+
+func (x *SlapEvent) ProtoReflect() protoreflect.Message {
+	mi := &file_clientdata_proto_msgTypes[6]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use SlapEvent.ProtoReflect.Descriptor instead.
+func (*SlapEvent) Descriptor() ([]byte, []int) {
+	return file_clientdata_proto_rawDescGZIP(), []int{6}
+}
+
+func (x *SlapEvent) GetSlap() bool {
+	if x != nil {
+		return x.Slap
+	}
+	return false
+}
+
 type ClientEvent struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -418,7 +477,7 @@ type ClientEvent struct {
 
 func (x *ClientEvent) Reset() {
 	*x = ClientEvent{}
-	mi := &file_clientdata_proto_msgTypes[6]
+	mi := &file_clientdata_proto_msgTypes[7]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -430,7 +489,7 @@ func (x *ClientEvent) String() string {
 func (*ClientEvent) ProtoMessage() {}
 
 func (x *ClientEvent) ProtoReflect() protoreflect.Message {
-	mi := &file_clientdata_proto_msgTypes[6]
+	mi := &file_clientdata_proto_msgTypes[7]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -443,7 +502,7 @@ func (x *ClientEvent) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ClientEvent.ProtoReflect.Descriptor instead.
 func (*ClientEvent) Descriptor() ([]byte, []int) {
-	return file_clientdata_proto_rawDescGZIP(), []int{6}
+	return file_clientdata_proto_rawDescGZIP(), []int{7}
 }
 
 func (x *ClientEvent) GetId() int32 {
@@ -460,6 +519,67 @@ func (x *ClientEvent) GetConnected() bool {
 	return false
 }
 
+type GameEvent struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Instigator int32 `protobuf:"varint,1,opt,name=Instigator,proto3" json:"Instigator,omitempty"`
+	Target     int32 `protobuf:"varint,2,opt,name=Target,proto3" json:"Target,omitempty"`
+	Slap       bool  `protobuf:"varint,3,opt,name=Slap,proto3" json:"Slap,omitempty"`
+}
+
+func (x *GameEvent) Reset() {
+	*x = GameEvent{}
+	mi := &file_clientdata_proto_msgTypes[8]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *GameEvent) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*GameEvent) ProtoMessage() {}
+
+func (x *GameEvent) ProtoReflect() protoreflect.Message {
+	mi := &file_clientdata_proto_msgTypes[8]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use GameEvent.ProtoReflect.Descriptor instead.
+func (*GameEvent) Descriptor() ([]byte, []int) {
+	return file_clientdata_proto_rawDescGZIP(), []int{8}
+}
+
+func (x *GameEvent) GetInstigator() int32 {
+	if x != nil {
+		return x.Instigator
+	}
+	return 0
+}
+
+func (x *GameEvent) GetTarget() int32 {
+	if x != nil {
+		return x.Target
+	}
+	return 0
+}
+
+func (x *GameEvent) GetSlap() bool {
+	if x != nil {
+		return x.Slap
+	}
+	return false
+}
+
 type ServerEnvelope struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -470,12 +590,13 @@ type ServerEnvelope struct {
 	//	*ServerEnvelope_Identity
 	//	*ServerEnvelope_Broadcast
 	//	*ServerEnvelope_Event
+	//	*ServerEnvelope_Gameevent
 	Payload isServerEnvelope_Payload `protobuf_oneof:"Payload"`
 }
 
 func (x *ServerEnvelope) Reset() {
 	*x = ServerEnvelope{}
-	mi := &file_clientdata_proto_msgTypes[7]
+	mi := &file_clientdata_proto_msgTypes[9]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -487,7 +608,7 @@ func (x *ServerEnvelope) String() string {
 func (*ServerEnvelope) ProtoMessage() {}
 
 func (x *ServerEnvelope) ProtoReflect() protoreflect.Message {
-	mi := &file_clientdata_proto_msgTypes[7]
+	mi := &file_clientdata_proto_msgTypes[9]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -500,7 +621,7 @@ func (x *ServerEnvelope) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ServerEnvelope.ProtoReflect.Descriptor instead.
 func (*ServerEnvelope) Descriptor() ([]byte, []int) {
-	return file_clientdata_proto_rawDescGZIP(), []int{7}
+	return file_clientdata_proto_rawDescGZIP(), []int{9}
 }
 
 func (m *ServerEnvelope) GetPayload() isServerEnvelope_Payload {
@@ -531,6 +652,13 @@ func (x *ServerEnvelope) GetEvent() *ClientEvent {
 	return nil
 }
 
+func (x *ServerEnvelope) GetGameevent() *GameEvent {
+	if x, ok := x.GetPayload().(*ServerEnvelope_Gameevent); ok {
+		return x.Gameevent
+	}
+	return nil
+}
+
 type isServerEnvelope_Payload interface {
 	isServerEnvelope_Payload()
 }
@@ -547,12 +675,18 @@ type ServerEnvelope_Event struct {
 	Event *ClientEvent `protobuf:"bytes,3,opt,name=event,proto3,oneof"`
 }
 
+type ServerEnvelope_Gameevent struct {
+	Gameevent *GameEvent `protobuf:"bytes,4,opt,name=gameevent,proto3,oneof"`
+}
+
 func (*ServerEnvelope_Identity) isServerEnvelope_Payload() {}
 
 func (*ServerEnvelope_Broadcast) isServerEnvelope_Payload() {}
 
 func (*ServerEnvelope_Event) isServerEnvelope_Payload() {}
 
+func (*ServerEnvelope_Gameevent) isServerEnvelope_Payload() {}
+
 var File_clientdata_proto protoreflect.FileDescriptor
 
 var file_clientdata_proto_rawDesc = []byte{
@@ -581,33 +715,47 @@ var file_clientdata_proto_rawDesc = []byte{
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+	0x69, 0x64, 0x65, 0x6e, 0x74, 0x69, 0x74, 0x79, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x14,
-	0x50, 0x45, 0x5f, 0x42, 0x52, 0x4f, 0x41, 0x44, 0x43, 0x41, 0x53, 0x54, 0x10, 0x00, 0x12, 0x15,
+	0x2e, 0x6d, 0x61, 0x69, 0x6e, 0x2e, 0x43, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x49, 0x64, 0x65, 0x6e,
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+	0x01, 0x28, 0x0b, 0x32, 0x10, 0x2e, 0x6d, 0x61, 0x69, 0x6e, 0x2e, 0x41, 0x6c, 0x6c, 0x43, 0x6c,
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+	0x73, 0x74, 0x12, 0x29, 0x0a, 0x05, 0x65, 0x76, 0x65, 0x6e, 0x74, 0x18, 0x03, 0x20, 0x01, 0x28,
+	0x0b, 0x32, 0x11, 0x2e, 0x6d, 0x61, 0x69, 0x6e, 0x2e, 0x43, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x45,
+	0x76, 0x65, 0x6e, 0x74, 0x48, 0x00, 0x52, 0x05, 0x65, 0x76, 0x65, 0x6e, 0x74, 0x12, 0x2f, 0x0a,
+	0x09, 0x67, 0x61, 0x6d, 0x65, 0x65, 0x76, 0x65, 0x6e, 0x74, 0x18, 0x04, 0x20, 0x01, 0x28, 0x0b,
+	0x32, 0x0f, 0x2e, 0x6d, 0x61, 0x69, 0x6e, 0x2e, 0x47, 0x61, 0x6d, 0x65, 0x45, 0x76, 0x65, 0x6e,
+	0x74, 0x48, 0x00, 0x52, 0x09, 0x67, 0x61, 0x6d, 0x65, 0x65, 0x76, 0x65, 0x6e, 0x74, 0x42, 0x09,
+	0x0a, 0x07, 0x50, 0x61, 0x79, 0x6c, 0x6f, 0x61, 0x64, 0x2a, 0x56, 0x0a, 0x0b, 0x4d, 0x65, 0x73,
+	0x73, 0x61, 0x67, 0x65, 0x54, 0x79, 0x70, 0x65, 0x12, 0x16, 0x0a, 0x12, 0x4d, 0x53, 0x47, 0x5f,
+	0x54, 0x59, 0x50, 0x45, 0x5f, 0x42, 0x52, 0x4f, 0x41, 0x44, 0x43, 0x41, 0x53, 0x54, 0x10, 0x00,
+	0x12, 0x15, 0x0a, 0x11, 0x4d, 0x53, 0x47, 0x5f, 0x54, 0x59, 0x50, 0x45, 0x5f, 0x49, 0x44, 0x45,
+	0x4e, 0x54, 0x49, 0x54, 0x59, 0x10, 0x01, 0x12, 0x18, 0x0a, 0x14, 0x4d, 0x53, 0x47, 0x5f, 0x54,
+	0x59, 0x50, 0x45, 0x5f, 0x43, 0x4f, 0x4f, 0x52, 0x44, 0x49, 0x4e, 0x41, 0x54, 0x45, 0x53, 0x10,
+	0x02, 0x42, 0x06, 0x5a, 0x04, 0x2e, 0x2f, 0x70, 0x62, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f,
+	0x33,
 }
 
 var (
@@ -623,7 +771,7 @@ func file_clientdata_proto_rawDescGZIP() []byte {
 }
 
 var file_clientdata_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
-var file_clientdata_proto_msgTypes = make([]protoimpl.MessageInfo, 8)
+var file_clientdata_proto_msgTypes = make([]protoimpl.MessageInfo, 10)
 var file_clientdata_proto_goTypes = []any{
 	(MessageType)(0),          // 0: main.MessageType
 	(*Coordinates)(nil),       // 1: main.Coordinates
@@ -632,22 +780,26 @@ var file_clientdata_proto_goTypes = []any{
 	(*AllClients)(nil),        // 4: main.AllClients
 	(*ClientIdentity)(nil),    // 5: main.ClientIdentity
 	(*ClientEnvelope)(nil),    // 6: main.ClientEnvelope
-	(*ClientEvent)(nil),       // 7: main.ClientEvent
+	(*SlapEvent)(nil),         // 7: main.SlapEvent
-	(*ServerEnvelope)(nil),    // 8: main.ServerEnvelope
+	(*ClientEvent)(nil),       // 8: main.ClientEvent
+	(*GameEvent)(nil),         // 9: main.GameEvent
+	(*ServerEnvelope)(nil),    // 10: main.ServerEnvelope
 }
 var file_clientdata_proto_depIdxs = []int32{
 	1, // 0: main.ClientData.coordinates:type_name -> main.Coordinates
 	1, // 1: main.ClientCoordinates.coordinates:type_name -> main.Coordinates
 	2, // 2: main.AllClients.Clients:type_name -> main.ClientData
 	3, // 3: main.ClientEnvelope.coordinates:type_name -> main.ClientCoordinates
-	5, // 4: main.ServerEnvelope.identity:type_name -> main.ClientIdentity
+	7, // 4: main.ClientEnvelope.slap:type_name -> main.SlapEvent
-	4, // 5: main.ServerEnvelope.broadcast:type_name -> main.AllClients
+	5, // 5: main.ServerEnvelope.identity:type_name -> main.ClientIdentity
-	7, // 6: main.ServerEnvelope.event:type_name -> main.ClientEvent
+	4, // 6: main.ServerEnvelope.broadcast:type_name -> main.AllClients
-	7, // [7:7] is the sub-list for method output_type
+	8, // 7: main.ServerEnvelope.event:type_name -> main.ClientEvent
-	7, // [7:7] is the sub-list for method input_type
+	9, // 8: main.ServerEnvelope.gameevent:type_name -> main.GameEvent
-	7, // [7:7] is the sub-list for extension type_name
+	9, // [9:9] is the sub-list for method output_type
-	7, // [7:7] is the sub-list for extension extendee
+	9, // [9:9] is the sub-list for method input_type
-	0, // [0:7] is the sub-list for field type_name
+	9, // [9:9] is the sub-list for extension type_name
+	9, // [9:9] is the sub-list for extension extendee
+	0, // [0:9] is the sub-list for field type_name
 }
 
 func init() { file_clientdata_proto_init() }
@@ -657,11 +809,13 @@ func file_clientdata_proto_init() {
 	}
 	file_clientdata_proto_msgTypes[5].OneofWrappers = []any{
 		(*ClientEnvelope_Coordinates)(nil),
+		(*ClientEnvelope_Slap)(nil),
 	}
-	file_clientdata_proto_msgTypes[7].OneofWrappers = []any{
+	file_clientdata_proto_msgTypes[9].OneofWrappers = []any{
 		(*ServerEnvelope_Identity)(nil),
 		(*ServerEnvelope_Broadcast)(nil),
 		(*ServerEnvelope_Event)(nil),
+		(*ServerEnvelope_Gameevent)(nil),
 	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
@@ -669,7 +823,7 @@ func file_clientdata_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_clientdata_proto_rawDesc,
 			NumEnums:      1,
-			NumMessages:   8,
+			NumMessages:   10,
 			NumExtensions: 0,
 			NumServices:   0,
 		},

server/clientdata.proto

@@ -14,6 +14,7 @@ message ClientData {
     string Address = 2;
     string Name = 3;
     Coordinates coordinates = 4;
+    bool hit = 5;
 }
 
 message ClientCoordinates {
@@ -28,3 +29,41 @@ message AllClients{
 message ClientIdentity{
     int32 Id = 1;
 }
+
+message ClientEnvelope {
+    oneof Payload {
+        ClientCoordinates coordinates = 1;
+        SlapEvent slap = 2;
+    }
+}
+
+message SlapEvent {
+    bool Slap = 1;
+}
+
+message ClientEvent {
+    int32 Id = 1;
+    bool Connected = 2;
+}
+
+message GameEvent {
+    int32 Instigator = 1;
+    int32 Target = 2;
+    bool Slap = 3;
+}
+
+message ServerEnvelope {
+    oneof Payload {
+        ClientIdentity identity = 1;
+        AllClients broadcast = 2;
+        ClientEvent event = 3;
+        GameEvent gameevent = 4;
+    }
+}
+
+enum MessageType {
+    MSG_TYPE_BROADCAST = 0;
+    MSG_TYPE_IDENTITY = 1;
+    MSG_TYPE_COORDINATES = 2;
+}
+

server/pb/clientdata.pb.go

@@ -350,6 +350,7 @@ type ClientEnvelope struct {
 	// Types that are assignable to Payload:
 	//
 	//	*ClientEnvelope_Coordinates
+	//	*ClientEnvelope_Slap
 	Payload isClientEnvelope_Payload `protobuf_oneof:"Payload"`
 }
 
@@ -397,6 +398,13 @@ func (x *ClientEnvelope) GetCoordinates() *ClientCoordinates {
 	return nil
 }
 
+func (x *ClientEnvelope) GetSlap() *SlapEvent {
+	if x, ok := x.GetPayload().(*ClientEnvelope_Slap); ok {
+		return x.Slap
+	}
+	return nil
+}
+
 type isClientEnvelope_Payload interface {
 	isClientEnvelope_Payload()
 }
@@ -405,8 +413,59 @@ type ClientEnvelope_Coordinates struct {
 	Coordinates *ClientCoordinates `protobuf:"bytes,1,opt,name=coordinates,proto3,oneof"`
 }
 
+type ClientEnvelope_Slap struct {
+	Slap *SlapEvent `protobuf:"bytes,2,opt,name=slap,proto3,oneof"`
+}
+
 func (*ClientEnvelope_Coordinates) isClientEnvelope_Payload() {}
 
+func (*ClientEnvelope_Slap) isClientEnvelope_Payload() {}
+
+type SlapEvent struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Slap bool `protobuf:"varint,1,opt,name=Slap,proto3" json:"Slap,omitempty"`
+}
+
+func (x *SlapEvent) Reset() {
+	*x = SlapEvent{}
+	mi := &file_clientdata_proto_msgTypes[6]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *SlapEvent) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SlapEvent) ProtoMessage() {}
+
+func (x *SlapEvent) ProtoReflect() protoreflect.Message {
+	mi := &file_clientdata_proto_msgTypes[6]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use SlapEvent.ProtoReflect.Descriptor instead.
+func (*SlapEvent) Descriptor() ([]byte, []int) {
+	return file_clientdata_proto_rawDescGZIP(), []int{6}
+}
+
+func (x *SlapEvent) GetSlap() bool {
+	if x != nil {
+		return x.Slap
+	}
+	return false
+}
+
 type ClientEvent struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -418,7 +477,7 @@ type ClientEvent struct {
 
 func (x *ClientEvent) Reset() {
 	*x = ClientEvent{}
-	mi := &file_clientdata_proto_msgTypes[6]
+	mi := &file_clientdata_proto_msgTypes[7]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -430,7 +489,7 @@ func (x *ClientEvent) String() string {
 func (*ClientEvent) ProtoMessage() {}
 
 func (x *ClientEvent) ProtoReflect() protoreflect.Message {
-	mi := &file_clientdata_proto_msgTypes[6]
+	mi := &file_clientdata_proto_msgTypes[7]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -443,7 +502,7 @@ func (x *ClientEvent) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ClientEvent.ProtoReflect.Descriptor instead.
 func (*ClientEvent) Descriptor() ([]byte, []int) {
-	return file_clientdata_proto_rawDescGZIP(), []int{6}
+	return file_clientdata_proto_rawDescGZIP(), []int{7}
 }
 
 func (x *ClientEvent) GetId() int32 {
@@ -460,6 +519,67 @@ func (x *ClientEvent) GetConnected() bool {
 	return false
 }
 
+type GameEvent struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Instigator int32 `protobuf:"varint,1,opt,name=Instigator,proto3" json:"Instigator,omitempty"`
+	Target     int32 `protobuf:"varint,2,opt,name=Target,proto3" json:"Target,omitempty"`
+	Slap       bool  `protobuf:"varint,3,opt,name=Slap,proto3" json:"Slap,omitempty"`
+}
+
+func (x *GameEvent) Reset() {
+	*x = GameEvent{}
+	mi := &file_clientdata_proto_msgTypes[8]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *GameEvent) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*GameEvent) ProtoMessage() {}
+
+func (x *GameEvent) ProtoReflect() protoreflect.Message {
+	mi := &file_clientdata_proto_msgTypes[8]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use GameEvent.ProtoReflect.Descriptor instead.
+func (*GameEvent) Descriptor() ([]byte, []int) {
+	return file_clientdata_proto_rawDescGZIP(), []int{8}
+}
+
+func (x *GameEvent) GetInstigator() int32 {
+	if x != nil {
+		return x.Instigator
+	}
+	return 0
+}
+
+func (x *GameEvent) GetTarget() int32 {
+	if x != nil {
+		return x.Target
+	}
+	return 0
+}
+
+func (x *GameEvent) GetSlap() bool {
+	if x != nil {
+		return x.Slap
+	}
+	return false
+}
+
 type ServerEnvelope struct {
 	state         protoimpl.MessageState
 	sizeCache     protoimpl.SizeCache
@@ -470,12 +590,13 @@ type ServerEnvelope struct {
 	//	*ServerEnvelope_Identity
 	//	*ServerEnvelope_Broadcast
 	//	*ServerEnvelope_Event
+	//	*ServerEnvelope_Gameevent
 	Payload isServerEnvelope_Payload `protobuf_oneof:"Payload"`
 }
 
 func (x *ServerEnvelope) Reset() {
 	*x = ServerEnvelope{}
-	mi := &file_clientdata_proto_msgTypes[7]
+	mi := &file_clientdata_proto_msgTypes[9]
 	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 	ms.StoreMessageInfo(mi)
 }
@@ -487,7 +608,7 @@ func (x *ServerEnvelope) String() string {
 func (*ServerEnvelope) ProtoMessage() {}
 
 func (x *ServerEnvelope) ProtoReflect() protoreflect.Message {
-	mi := &file_clientdata_proto_msgTypes[7]
+	mi := &file_clientdata_proto_msgTypes[9]
 	if x != nil {
 		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
 		if ms.LoadMessageInfo() == nil {
@@ -500,7 +621,7 @@ func (x *ServerEnvelope) ProtoReflect() protoreflect.Message {
 
 // Deprecated: Use ServerEnvelope.ProtoReflect.Descriptor instead.
 func (*ServerEnvelope) Descriptor() ([]byte, []int) {
-	return file_clientdata_proto_rawDescGZIP(), []int{7}
+	return file_clientdata_proto_rawDescGZIP(), []int{9}
 }
 
 func (m *ServerEnvelope) GetPayload() isServerEnvelope_Payload {
@@ -531,6 +652,13 @@ func (x *ServerEnvelope) GetEvent() *ClientEvent {
 	return nil
 }
 
+func (x *ServerEnvelope) GetGameevent() *GameEvent {
+	if x, ok := x.GetPayload().(*ServerEnvelope_Gameevent); ok {
+		return x.Gameevent
+	}
+	return nil
+}
+
 type isServerEnvelope_Payload interface {
 	isServerEnvelope_Payload()
 }
@@ -547,12 +675,18 @@ type ServerEnvelope_Event struct {
 	Event *ClientEvent `protobuf:"bytes,3,opt,name=event,proto3,oneof"`
 }
 
+type ServerEnvelope_Gameevent struct {
+	Gameevent *GameEvent `protobuf:"bytes,4,opt,name=gameevent,proto3,oneof"`
+}
+
 func (*ServerEnvelope_Identity) isServerEnvelope_Payload() {}
 
 func (*ServerEnvelope_Broadcast) isServerEnvelope_Payload() {}
 
 func (*ServerEnvelope_Event) isServerEnvelope_Payload() {}
 
+func (*ServerEnvelope_Gameevent) isServerEnvelope_Payload() {}
+
 var File_clientdata_proto protoreflect.FileDescriptor
 
 var file_clientdata_proto_rawDesc = []byte{
@@ -581,33 +715,47 @@ var file_clientdata_proto_rawDesc = []byte{
 	0x6e, 0x74, 0x44, 0x61, 0x74, 0x61, 0x52, 0x07, 0x43, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x73, 0x22,
 	0x20, 0x0a, 0x0e, 0x43, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x49, 0x64, 0x65, 0x6e, 0x74, 0x69, 0x74,
 	0x79, 0x12, 0x0e, 0x0a, 0x02, 0x49, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x05, 0x52, 0x02, 0x49,
-	0x64, 0x22, 0x58, 0x0a, 0x0e, 0x43, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x45, 0x6e, 0x76, 0x65, 0x6c,
+	0x64, 0x22, 0x7f, 0x0a, 0x0e, 0x43, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x45, 0x6e, 0x76, 0x65, 0x6c,
 	0x6f, 0x70, 0x65, 0x12, 0x3b, 0x0a, 0x0b, 0x63, 0x6f, 0x6f, 0x72, 0x64, 0x69, 0x6e, 0x61, 0x74,
 	0x65, 0x73, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x17, 0x2e, 0x6d, 0x61, 0x69, 0x6e, 0x2e,
 	0x43, 0x6c, 0x69, 0x65, 0x6e, 0x74, 0x43, 0x6f, 0x6f, 0x72, 0x64, 0x69, 0x6e, 0x61, 0x74, 0x65,
 	0x73, 0x48, 0x00, 0x52, 0x0b, 0x63, 0x6f, 0x6f, 0x72, 0x64, 0x69, 0x6e, 0x61, 0x74, 0x65, 0x73,
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+	0x12, 0x25, 0x0a, 0x04, 0x73, 0x6c, 0x61, 0x70, 0x18, 0x02, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x0f,
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+	0x2e, 0x6d, 0x61, 0x69, 0x6e, 0x2e, 0x53, 0x6c, 0x61, 0x70, 0x45, 0x76, 0x65, 0x6e, 0x74, 0x48,
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+	0x33,
 }
 
 var (
@@ -623,7 +771,7 @@ func file_clientdata_proto_rawDescGZIP() []byte {
 }
 
 var file_clientdata_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
-var file_clientdata_proto_msgTypes = make([]protoimpl.MessageInfo, 8)
+var file_clientdata_proto_msgTypes = make([]protoimpl.MessageInfo, 10)
 var file_clientdata_proto_goTypes = []any{
 	(MessageType)(0),          // 0: main.MessageType
 	(*Coordinates)(nil),       // 1: main.Coordinates
@@ -632,22 +780,26 @@ var file_clientdata_proto_goTypes = []any{
 	(*AllClients)(nil),        // 4: main.AllClients
 	(*ClientIdentity)(nil),    // 5: main.ClientIdentity
 	(*ClientEnvelope)(nil),    // 6: main.ClientEnvelope
-	(*ClientEvent)(nil),       // 7: main.ClientEvent
+	(*SlapEvent)(nil),         // 7: main.SlapEvent
-	(*ServerEnvelope)(nil),    // 8: main.ServerEnvelope
+	(*ClientEvent)(nil),       // 8: main.ClientEvent
+	(*GameEvent)(nil),         // 9: main.GameEvent
+	(*ServerEnvelope)(nil),    // 10: main.ServerEnvelope
 }
 var file_clientdata_proto_depIdxs = []int32{
 	1, // 0: main.ClientData.coordinates:type_name -> main.Coordinates
 	1, // 1: main.ClientCoordinates.coordinates:type_name -> main.Coordinates
 	2, // 2: main.AllClients.Clients:type_name -> main.ClientData
 	3, // 3: main.ClientEnvelope.coordinates:type_name -> main.ClientCoordinates
-	5, // 4: main.ServerEnvelope.identity:type_name -> main.ClientIdentity
+	7, // 4: main.ClientEnvelope.slap:type_name -> main.SlapEvent
-	4, // 5: main.ServerEnvelope.broadcast:type_name -> main.AllClients
+	5, // 5: main.ServerEnvelope.identity:type_name -> main.ClientIdentity
-	7, // 6: main.ServerEnvelope.event:type_name -> main.ClientEvent
+	4, // 6: main.ServerEnvelope.broadcast:type_name -> main.AllClients
-	7, // [7:7] is the sub-list for method output_type
+	8, // 7: main.ServerEnvelope.event:type_name -> main.ClientEvent
-	7, // [7:7] is the sub-list for method input_type
+	9, // 8: main.ServerEnvelope.gameevent:type_name -> main.GameEvent
-	7, // [7:7] is the sub-list for extension type_name
+	9, // [9:9] is the sub-list for method output_type
-	7, // [7:7] is the sub-list for extension extendee
+	9, // [9:9] is the sub-list for method input_type
-	0, // [0:7] is the sub-list for field type_name
+	9, // [9:9] is the sub-list for extension type_name
+	9, // [9:9] is the sub-list for extension extendee
+	0, // [0:9] is the sub-list for field type_name
 }
 
 func init() { file_clientdata_proto_init() }
@@ -657,11 +809,13 @@ func file_clientdata_proto_init() {
 	}
 	file_clientdata_proto_msgTypes[5].OneofWrappers = []any{
 		(*ClientEnvelope_Coordinates)(nil),
+		(*ClientEnvelope_Slap)(nil),
 	}
-	file_clientdata_proto_msgTypes[7].OneofWrappers = []any{
+	file_clientdata_proto_msgTypes[9].OneofWrappers = []any{
 		(*ServerEnvelope_Identity)(nil),
 		(*ServerEnvelope_Broadcast)(nil),
 		(*ServerEnvelope_Event)(nil),
+		(*ServerEnvelope_Gameevent)(nil),
 	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
@@ -669,7 +823,7 @@ func file_clientdata_proto_init() {
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: file_clientdata_proto_rawDesc,
 			NumEnums:      1,
-			NumMessages:   8,
+			NumMessages:   10,
 			NumExtensions: 0,
 			NumServices:   0,
 		},

server/server/server.go

@@ -25,6 +25,8 @@ type ClientData struct {
 	Name     string
 	Position gamedata.Coordinates
 	Hit      bool
+	Target   int
+	Slapping bool
 }
 
 type Server struct {
@@ -124,6 +126,7 @@ func (s *Server) HandleClient(conn net.Conn, id int) {
 				Position: gamedata.Coordinates{X: payload.Coordinates.Coordinates.X, Y: payload.Coordinates.Coordinates.Y},
 			}
 
+			s.mu.Lock()
 			//check if we have any collisions with other entities
 			for _, client := range s.clientlist {
 				if client.Id != id {
@@ -133,15 +136,20 @@ func (s *Server) HandleClient(conn net.Conn, id int) {
 					if math.Abs(dx) < boxwidth && math.Abs(dy) < boxwidth {
 						//collision, mark it
 						cd.Hit = true
+						cd.Target = client.Id
 					}
 
 				}
 			}
-
 			//update the client list
-			s.mu.Lock()
 			s.clientlist[conn] = cd
 			s.mu.Unlock()
+		case *pb.ClientEnvelope_Slap:
+			if s.clientlist[conn].Target != 0 && s.clientlist[conn].Hit {
+				s.BroadcastSlap(id, s.clientlist[conn].Target)
+			} else {
+				fmt.Println("Invalid slap detected.")
+			}
 		}
 
 	}
@@ -273,3 +281,23 @@ func (s *Server) SendClientEvent(conn net.Conn, id int, connected bool) {
 	s.mu.Unlock()
 
 }
+
+func (s *Server) BroadcastSlap(instigator, target int) {
+
+	envelope := &pb.ServerEnvelope{
+		Payload: &pb.ServerEnvelope_Gameevent{
+			Gameevent: &pb.GameEvent{
+				Instigator: int32(instigator),
+				Target:     int32(target),
+				Slap:       true,
+			},
+		},
+	}
+
+	s.mu.Lock()
+	for conn := range s.clientlist {
+		s.SendMessage(conn, envelope)
+	}
+	s.mu.Unlock()
+
+}