switch to openstreetmap and implement teleport

Author: lian

README.md

@@ -14,7 +14,7 @@ program zips are uploaded [here](https://github.com/lian/msfs2020-go/releases)
 
 ## tools
 
-* [vfrmap](vfrmap/) web server that shows your current MSFS2020 plane position in google maps inside the browser
+* [vfrmap](vfrmap/) local web-server that will allow you to view your location, and some information about your trajectory including airspeed and altitude.
 
 ## examples
 

build-vfrmap.sh

@@ -3,6 +3,7 @@ set -e
 
 go generate github.com/lian/msfs2020-go/simconnect
 go generate github.com/lian/msfs2020-go/vfrmap
+go generate github.com/lian/msfs2020-go/vfrmap/html/leafletjs
 
 build_time=$(date -u +'%Y-%m-%d_%T')
 set +e

simconnect/defs.go

@@ -9,6 +9,7 @@ const E_FAIL uint32 = 0x80004005
 type DWORD uint32
 
 const UNUSED DWORD = 0xffffffff // special value to indicate unused event, ID
+const OBJECT_ID_USER DWORD = 0  // proxy value for User vehicle ObjectID
 
 const (
 	DATATYPE_INVALID      DWORD = iota // invalid data type

simconnect/simconnect.go

@@ -21,6 +21,7 @@ var proc_SimConnect_AddToDataDefinition *syscall.LazyProc
 var proc_SimConnect_SubscribeToSystemEvent *syscall.LazyProc
 var proc_SimConnect_GetNextDispatch *syscall.LazyProc
 var proc_SimConnect_RequestDataOnSimObjectType *syscall.LazyProc
+var proc_SimConnect_SetDataOnSimObject *syscall.LazyProc
 
 type SimConnect struct {
 	handle    unsafe.Pointer
@@ -58,6 +59,7 @@ func New(name string) (*SimConnect, error) {
 		proc_SimConnect_SubscribeToSystemEvent = mod.NewProc("SimConnect_SubscribeToSystemEvent")
 		proc_SimConnect_GetNextDispatch = mod.NewProc("SimConnect_GetNextDispatch")
 		proc_SimConnect_RequestDataOnSimObjectType = mod.NewProc("SimConnect_RequestDataOnSimObjectType")
+		proc_SimConnect_SetDataOnSimObject = mod.NewProc("SimConnect_SetDataOnSimObject")
 	}
 
 	// SimConnect_Open(
@@ -227,6 +229,39 @@ func (s *SimConnect) RequestDataOnSimObjectType(requestID, defineID, radius, sim
 	return nil
 }
 
+func (s *SimConnect) SetDataOnSimObject(defineID, simobjectType, flags, arrayCount, size DWORD, buf unsafe.Pointer) error {
+	//s.SetDataOnSimObject(defineID, simconnect.OBJECT_ID_USER, 0, 0, size, buf)
+
+	// SimConnect_SetDataOnSimObject(
+	//   HANDLE hSimConnect,
+	//   SIMCONNECT_DATA_DEFINITION_ID DefineID,
+	//   SIMCONNECT_OBJECT_ID ObjectID,
+	//   SIMCONNECT_DATA_SET_FLAG Flags,
+	//   DWORD ArrayCount,
+	//   DWORD cbUnitSize,
+	//   void * pDataSet
+	// );
+	args := []uintptr{
+		uintptr(s.handle),
+		uintptr(defineID),
+		uintptr(simobjectType),
+		uintptr(flags),
+		uintptr(arrayCount),
+		uintptr(size),
+		uintptr(buf),
+	}
+
+	r1, _, err := proc_SimConnect_SetDataOnSimObject.Call(args...)
+	if int32(r1) < 0 {
+		return fmt.Errorf(
+			"SimConnect_SetDataOnSimObject for defineID %d error: %d %s",
+			defineID, r1, err,
+		)
+	}
+
+	return nil
+}
+
 func (s *SimConnect) GetNextDispatch() (unsafe.Pointer, int32, error) {
 	var ppData unsafe.Pointer
 	var ppDataLength DWORD

vfrmap/README.md

@@ -1,6 +1,8 @@
 # msfs2020-go/vfrmap
 
-web server that shows your current MSFS2020 plane position in google maps inside the browser
+local web-server using msfs2020-go/simconnect that will allow you to view your location, and some information about your trajectory including airspeed and altitude.
+
+also allows you to quickly teleport your plane to any location.
 
 ## install
 
@@ -10,21 +12,33 @@ web server that shows your current MSFS2020 plane position in google maps inside
 ## run
 * run `vfrmap.exe`
 * browse to http://localhost:9000
+* or to `http://<computer-ip>:9000`
 
 ## arguments
 
 * `-v` show program version
-* `-api-key` use your own gmap api-key
 * `-verbose` verbose output
 
+## usage
+
+click on your plane to see gps coordinates, follow or don't follow the plane, or open the current location on google maps in a new tab.
+
+if you click on the map itself a new marker appears. clicking on that marker allows you to teleport to this location or enter your own gps coordinates.
+
+esc key switching between following the plane or freely moving around on the map.
+
 ## change visualisation
 
 if you want to change how the webpage looks then copy and change [index.html](html/index.html) to the same folder as `vfrmap.exe` and relaunch the program.
 
+## openstreetmap
+
+earlier versions of this app used google maps directly, but this was to expensive. openstreetmap is free to use and very good as well.
+
 ## compile
 
 `GOOS=windows GOARCH=amd64 go build github.com/lian/msfs2020-go/vfrmap` or see [build-vfrmap.sh](https://github.com/lian/msfs2020-go/blob/master/build-vfrmap.sh)
 
 ## screenshots
 
-![screenshot](https://i.imgur.com/YllMEvG.png)
+![screenshot](https://i.imgur.com/5PZyKC8.png)