Method UpdatePos

zinx_app_demo/mmo_game/core/player.go:177–233

UpdatePos Broadcast player position update (广播玩家位置移动)

(x float32, y float32, z float32, v float32)

// UpdatePos Broadcast player position update
// (广播玩家位置移动)
func (p *Player) UpdatePos(x float32, y float32, z float32, v float32) {

	// Trigger visibility change and addition business
	// Calculate the old grid gID
	// 触发消失视野和添加视野业务
	// 计算旧格子gID
	oldGID := WorldMgrObj.AoiMgr.GetGIDByPos(p.X, p.Z)
	// Calculate the new grid gID
	// 计算新格子gID
	newGID := WorldMgrObj.AoiMgr.GetGIDByPos(x, z)

	// Update the player's position information
	// 更新玩家的位置信息
	p.X = x
	p.Y = y
	p.Z = z
	p.V = v

	if oldGID != newGID {
		// Trigger grid switch
		// Remove pID from the old aoi grid
		// 触发gird切换
		// 把pID从就的aoi格子中删除
		WorldMgrObj.AoiMgr.RemovePIDFromGrID(int(p.PID), oldGID)

		// 把pID添加到新的aoi格子中去
		// Add pID to the new aoi grid
		WorldMgrObj.AoiMgr.AddPIDToGrID(int(p.PID), newGID)

		_ = p.OnExchangeAoiGrID(oldGID, newGID)
	}

	// Assemble protobuf data, send position to surrounding players
	// 组装protobuf协议，发送位置给周围玩家
	msg := &pb.BroadCast{
		PID: p.PID,
		Tp:  4, //Tp:4  Coordinates information after movement(移动之后的坐标信息)
		Data: &pb.BroadCast_P{
			P: &pb.Position{
				X: p.X,
				Y: p.Y,
				Z: p.Z,
				V: p.V,
			},
		},
	}

	// Get all players around the current player
	// (获取当前玩家周边全部玩家)
	players := p.GetSurroundingPlayers()

	// Send MsgID:200 message to each player's client, updating position after movement
	// (向周边的每个玩家发送MsgID:200消息，移动位置更新消息)
	for _, player := range players {
		player.SendMsg(200, msg)
	}
}