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A320-family/Nasal/FMGC/flightplan-waypoints.nas
2020-05-23 12:16:20 +01:00

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# A3XX FMGC Waypoint database
# Copyright (c) 2020 Josh Davidson (Octal450) and Jonathan Redpath (legoboyvdlp)
var nilTree = {
"latitude": 0,
"longitude": 0,
"ident": "",
};
var WaypointDatabase = {
waypointsVec: [],
confirm: [0, 0],
# addWP - adds pilot waypoint to waypoints vector
# arg: wpObj - passed pilot waypoint object
# return:
# 0 - not allowed
# 2 - accepted
# 4 - database full
addWP: func(wpObj) {
# validate ghost
if (wpObj.wpGhost == nil) {
return 0;
}
# check size of database
if (me.getCount() >= 20) {
return 4;
}
if (wpObj.index >= me.getSize()) {
# add to end, since index doesn't exist
append(me.waypointsVec, wpObj);
me.write();
return 2;
} elsif (me.waypointsVec[wpObj.index] == nil) {
# add at passed index
me.waypointsVec[wpObj.index] = wpObj;
me.write();
return 2;
} else {
# fall back to end
logprint(4, "pilotWaypoint constructor claims index " ~ wpObj.index ~ " is nil, but it isn't!");
append(me.waypointsVec, wpObj);
me.write();
return 2;
}
},
# delete - empties waypoints vector
# callerIdx is the calling mcdu
delete: func(callerIdx) {
var noDel = 0;
for (var i = 0; i < me.getSize(); i = i + 1) {
if (me.waypointsVec[i] != nil) {
if (fmgc.flightPlanController.flightplans[2].indexOfWP(me.waypointsVec[i].wpGhost) == -1) { # docs says only checks active and secondary
me.waypointsVec[i] = nil;
}
}
}
me.write();
if (me.getCount() != 0) {
mcdu.mcdu_message(callerIdx, "PILOT ELEMENT RETAINED");
}
},
# deleteAtIndex - delete at specific index. Set to nil, so it still exists in vector
deleteAtIndex: func(index) {
if (index < 0 or index >= me.getSize() or index >= 20) {
return;
}
me.waypointsVec[index] = nil;
me.write();
},
# getNilIndex - find the first nil
# post 2020.1 use dedicated function vecindex()
getNilIndex: func() {
for (var i = 0; i < me.getSize(); i = i + 1) {
if (me.waypointsVec[i] == nil) {
return i;
}
}
return -1;
},
# getNonNilIndex - find the first non-nil
# post 2020.1 use dedicated function vecindex()
getNonNilIndex: func() {
for (var i = 0; i < me.getSize(); i = i + 1) {
if (me.waypointsVec[i] != nil) {
return i;
}
}
return -1;
},
# getNextFromIndex - find the next non-nil after a passed index
getNextFromIndex: func(index) {
for (var i = (index + 1); i < me.getSize(); i = i + 1) {
if (me.waypointsVec[i] != nil) {
return i;
}
}
for (var i = 0; i <= index; i = i + 1) {
if (me.waypointsVec[i] != nil) {
return i;
}
}
return index;
},
# getPreviousFromIndex - find the next non-nil before a passed index
getPreviousFromIndex: func(index) {
for (var i = (index - 1); i >= 0; i = i - 1) {
if (me.waypointsVec[i] != nil) {
return i;
}
}
for (var i = (me.getSize() - 1); i >= index; i = i - 1) {
if (me.waypointsVec[i] != nil) {
return i;
}
}
return index;
},
# getNoOfIndex - return what number passed item is in list, neglecting "nil"
getNoOfIndex: func(index) {
var count = 0;
for (var i = 0; i <= index; i = i + 1) {
if (me.waypointsVec[i] == nil) {
continue;
}
count += 1;
}
return count;
},
# getCount - return size, neglecting "nil"
getCount: func() {
var count = 0;
for (var i = 0; i < me.getSize(); i = i + 1) {
if (me.waypointsVec[i] == nil) {
continue;
}
count += 1;
}
return count;
},
# getSize - return maximum size of vector
getSize: func() {
return size(me.waypointsVec);
},
# getWP - try to find waypoint whose name matches passed argument
getWP: func(text) {
for (var i = 0; i < me.getSize(); i = i + 1) {
if (me.waypointsVec[i] == nil) {
continue;
}
if (text == me.waypointsVec[i].wpGhost.wp_name) {
return me.waypointsVec[i].wpGhost;
}
}
return nil;
},
# write - write to file, as a hash structure
write: func() {
var path = getprop("/sim/fg-home") ~ "/Export/A320SavedWaypoints.xml";
var tree = {
waypoints: {
},
};
for (var i = 0; i < me.getSize(); i = i + 1) {
if (me.waypointsVec[i] != nil) {
tree.waypoints["waypoint" ~ i] = me.waypointsVec[i].tree;
}
}
io.writexml(path, props.Node.new(tree)); # write the data
},
# read - read from a file, extract using props interface
read: func() {
var path = getprop("/sim/fg-home") ~ "/Export/A320SavedWaypoints.xml";
# create file if it doesn't exist
if (io.stat(path) == nil) {
me.write();
return;
}
var data = io.readxml(path).getChild("waypoints");
var pilotWP = nil;
for (var i = 0; i < 20; i = i + 1) {
pilotWP = nil;
var childNode = data.getChild("waypoint" ~ i);
if (childNode == nil) {
continue;
}
var wpt = createWP({lat: num(childNode.getChild("latitude").getValue()), lon: num(childNode.getChild("longitude").getValue())},childNode.getChild("ident").getValue());
if (left(childNode.getChild("ident").getValue(), 3) == "PBD") {
pilotWP = pilotWaypoint.newAtPosition(wpt, "PBD", right(childNode.getChild("ident").getValue(), 1));
} else {
pilotWP = pilotWaypoint.newAtPosition(wpt, "LL", right(childNode.getChild("ident").getValue(), 1));
}
me.addWPToPos(pilotWP, right(childNode.getChild("ident").getValue(), 1));
}
},
# addWPToPos - helper for reading - inserts at specific index
# will create nil for intermediates
addWPToPos: func(wpObj, position) {
if (me.getSize() >= position) {
me.waypointsVec[position - 1] = wpObj;
} else {
var numToIns = position - me.getSize();
while (numToIns >= 1) {
append(me.waypointsVec, nil);
numToIns -= 1;
}
me.waypointsVec[position - 1] = wpObj;
}
},
};
var pilotWaypoint = {
new: func(positioned, typeStr) {
var pilotWp = { parents:[pilotWaypoint] };
# Figure out what the first index is we can use
var nilIndex = WaypointDatabase.getNilIndex();
var position = nil;
if (nilIndex == -1) {
position = WaypointDatabase.getSize() + 1;
} else {
position = nilIndex + 1
}
pilotWp.setId(typeStr ~ sprintf("%s", position));
pilotWp.index = position - 1;
# set ghost to created waypoint
pilotWp.wpGhost = createWP(positioned, pilotWp.id);
pilotWp.tree = {
"latitude": pilotWp.wpGhost.wp_lat,
"longitude": pilotWp.wpGhost.wp_lon,
"ident": pilotWp.id,
};
return pilotWp;
},
newAtPosition: func(positioned, typeStr, position) {
var pilotWp = { parents:[pilotWaypoint] };
pilotWp.setId(typeStr ~ sprintf("%s", position));
pilotWp.index = position - 1;
# set ghost to created waypoint
pilotWp.wpGhost = positioned;
pilotWp.tree = {
"latitude": pilotWp.wpGhost.wp_lat,
"longitude": pilotWp.wpGhost.wp_lon,
"ident": pilotWp.id,
};
return pilotWp;
},
setId: func(id) {
if (typeof(id) == "scalar") { me.id = id; }
},
getId: func() {
if (me.id != nil) { return id; }
},
};
setlistener("/MCDU[0]/page", func() {
if (getprop("/MCDU[0]/page") != "PILOTWP" and getprop("/MCDU[0]/page") != "STATUS") {
WaypointDatabase.confirm[0] = 0;
}
}, 0, 0);
setlistener("/MCDU[1]/page", func() {
if (getprop("/MCDU[1]/page") != "PILOTWP" and getprop("/MCDU[1]/page") != "STATUS") {
WaypointDatabase.confirm[1] = 0;
}
}, 0, 0);