BridgeElevation

/*
Requires Multilevel Tokens and Levels plugins and a very particular setup, but could be useful to someone.
The original design was for a bridge scenario, where you might want to be over or under the bridge.
Create a map. Place a bridge tile. Set its Levels values to 0 and Infinity. Add an MLT region that covers the bridge tile. Set the argument to 0,
the Macro to ElevationChange, and enable all three triggers. Create another region with the same values
that represents the space below the level of the bridge, but set its argument to -10, or whatever lower elevation 
you choose. Optionally, create walls below the level of the bridge (with Levels values of -Infinity to -1) to 
represent the bridge supports and where the bridge meets the land.

The macro will run automatically whenever a token enters, leaves, or moves within one of these regions and
automatically adjust token elevation. The sole exception to this is if the token moves from a space occupied by 
no MLT regions into a space occupied by two of them. In this scenario, a dialog will appear asking whether to
place the token above or below the bridge tile. The response will dictate the token elevation.
*/

let m = game.macros.getName('ElevationChange');

if ( typeof m.data.flags.elevationChange.eveType == 'undefined' ) {
    m.data.flags.elevationChange.eveType = 0;
}
if ( typeof m.data.flags.elevationChange.time == 'undefined' ) {
    m.data.flags.elevationChange.time = 0;
}
if ( typeof m.data.flags.elevationChange.argPass == 'undefined' ) {
    m.data.flags.elevationChange.argPass = null;
}

console.log(Date.now() - m.data.flags.elevationChange.time);

let eType = ( Date.now() - m.data.flags.elevationChange.time <= 100 ? m.data.flags.elevationChange.eveType : 0 );

let eveCount = ( Date.now() - m.data.flags.elevationChange.time <= 100 ? 1 : 0 );

let zMax = Math.max(args[0], m.data.flags.elevationChange.argPass);
let zMin = Math.min(args[0], m.data.flags.elevationChange.argPass);


if (event === MLT.ENTER) {
    console.log(eveCount + '-enter-' + args[0] );
    if ( eveCount == 1 && eType == 'ENTER') {
        let d = new Dialog({
         title: "Up or Down?",
         buttons: {
          one: {
           icon: '<i class="fas fa-arrow-circle-up"></i>',
           callback: () => token.update({"elevation": zMax})
          },
          two: {
           icon: '<i class="fas fa-arrow-circle-down"></i>',
           callback: () => token.update({"elevation": zMin})
          }
         },
         default: "one",
        });
        d.render(true);
    } else if ( eType != 'MOVE' ) {
        token.update({"elevation": token.data.elevation + args[0]});
    }
    m.data.flags.elevationChange.eveType = 'ENTER';
    m.data.flags.elevationChange.argPass = args[0];
} else if (event === MLT.LEAVE) {
    console.log(eveCount + '-leave-' + args[0] + eType);
    if ( eveCount == 1 && eType == 'LEAVE' ) {
        token.update({"elevation": '0' });
    } else {
        token.update({"elevation": token.data.elevation - args[0] });
    }
    m.data.flags.elevationChange.eveType = 'LEAVE';
} else if (event === MLT.MOVE) {
    console.log(eveCount + '-move-' + args[0] );
    token.update({"elevation": args[0]});
    m.data.flags.elevationChange.eveType = 'MOVE';
}

m.data.flags.elevationChange.time = Date.now();