怪物死亡和世界宝箱随机掉落

anticheat/handle/handle.go

@@ -1,22 +1,89 @@
 package handle
 
 import (
+	"math"
+	"time"
+
+	"hk4e/common/constant"
 	"hk4e/common/mq"
 	"hk4e/gate/kcp"
 	"hk4e/node/api"
+	"hk4e/pkg/logger"
 	"hk4e/protocol/cmd"
 	"hk4e/protocol/proto"
 
 	pb "google.golang.org/protobuf/proto"
 )
 
+const (
+	MoveVectorCacheNum = 100
+	MaxMoveSpeed       = 10000.0
+)
+
+type MoveVector struct {
+	pos  *proto.Vector
+	time int64
+}
+
+type AnticheatContext struct {
+	moveVectorList []*MoveVector
+}
+
+func (a *AnticheatContext) Move(pos *proto.Vector) {
+	a.moveVectorList = append(a.moveVectorList, &MoveVector{
+		pos:  pos,
+		time: time.Now().UnixMilli(),
+	})
+	if len(a.moveVectorList) > MoveVectorCacheNum {
+		a.moveVectorList = a.moveVectorList[len(a.moveVectorList)-MoveVectorCacheNum:]
+	}
+}
+
+func (a *AnticheatContext) GetMoveSpeed() float32 {
+	avgMoveSpeed := float32(0.0)
+	for index := range a.moveVectorList {
+		if index+1 >= len(a.moveVectorList) {
+			break
+		}
+		nextMoveVector := a.moveVectorList[index+1]
+		beforeMoveVector := a.moveVectorList[index]
+		dx := float32(math.Sqrt(
+			float64((nextMoveVector.pos.X-beforeMoveVector.pos.X)*(nextMoveVector.pos.X-beforeMoveVector.pos.X)) +
+				float64((nextMoveVector.pos.Y-beforeMoveVector.pos.Y)*(nextMoveVector.pos.Y-beforeMoveVector.pos.Y)) +
+				float64((nextMoveVector.pos.Z-beforeMoveVector.pos.Z)*(nextMoveVector.pos.Z-beforeMoveVector.pos.Z)),
+		))
+		dt := float32(nextMoveVector.time-beforeMoveVector.time) / 1000.0
+		avgMoveSpeed += dx / dt
+	}
+	avgMoveSpeed /= float32(len(a.moveVectorList))
+	return avgMoveSpeed
+}
+
+func NewAnticheatContext() *AnticheatContext {
+	r := &AnticheatContext{
+		moveVectorList: make([]*MoveVector, 0),
+	}
+	return r
+}
+
 type Handle struct {
-	messageQueue *mq.MessageQueue
+	messageQueue   *mq.MessageQueue
+	playerAcCtxMap map[uint32]*AnticheatContext
+}
+
+func (h *Handle) GetPlayerAcCtx(userId uint32) *AnticheatContext {
+	ctx, exist := h.playerAcCtxMap[userId]
+	if !exist {
+		ctx = NewAnticheatContext()
+		h.playerAcCtxMap[userId] = ctx
+	}
+	return ctx
 }
 
 func NewHandle(messageQueue *mq.MessageQueue) (r *Handle) {
 	r = new(Handle)
 	r.messageQueue = messageQueue
+	r.playerAcCtxMap = make(map[uint32]*AnticheatContext)
 	r.run()
 	return r
 }
@@ -53,13 +120,26 @@ func (h *Handle) CombatInvocationsNotify(userId uint32, gateAppId string, payloa
 			if err != nil {
 				continue
 			}
-			if entityMoveInfo.MotionInfo.Pos.Y > 3000.0 {
+			if GetEntityType(entityMoveInfo.EntityId) != constant.ENTITY_TYPE_AVATAR {
+				continue
+			}
+			// 玩家超速移动检测
+			ctx := h.GetPlayerAcCtx(userId)
+			ctx.Move(entityMoveInfo.MotionInfo.Pos)
+			moveSpeed := ctx.GetMoveSpeed()
+			logger.Debug("player move speed: %v, uid: %v", moveSpeed, userId)
+			if moveSpeed > MaxMoveSpeed {
+				logger.Warn("player move overspeed, speed: %v, uid: %v", moveSpeed, userId)
 				h.KickPlayer(userId, gateAppId)
 			}
 		}
 	}
 }
 
+func GetEntityType(entityId uint32) int {
+	return int(entityId >> 24)
+}
+
 func (h *Handle) KickPlayer(userId uint32, gateAppId string) {
 	h.messageQueue.SendToGate(gateAppId, &mq.NetMsg{
 		MsgType: mq.MsgTypeConnCtrl,