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Support elevation in token distance hovering

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This commit is contained in:
Carlos Fernandez 2026-02-21 20:27:42 -05:00
parent ca434d33f1
commit f038309e61
1 changed files with 28 additions and 7 deletions
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35
module/canvas/placeables/token.mjs
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@ -55,20 +55,37 @@ export default class DhTokenPlaceable extends foundry.canvas.placeables.Token {
const originPoint = this.center;
const destinationPoint = target.center;
const thisBounds = this.bounds;
const targetBounds = target.bounds;
// Figure out the elevation difference
const sizePerUnit = canvas.grid.size / canvas.grid.distance;
const thisHeight = Math.max(thisBounds.width, thisBounds.height) / sizePerUnit;
const targetHeight = Math.max(targetBounds.width, targetBounds.height) / sizePerUnit;
const thisElevation = [this.document.elevation, this.document.elevation + thisHeight];
const targetElevation = [target.document.elevation, target.document.elevation + targetHeight];
const isSameAltitude =
thisElevation[0] <= targetElevation[1] && // bottom of this must be at or below the top of target
thisElevation[1] >= targetElevation[0]; // top of this must be at or above the bottom of target
const [lower, higher] = [targetElevation, thisElevation].sort((a, b) => a[1] - b[1]);
const elevation = isSameAltitude ? 0 : higher[0] - lower[1];
// Compute for gridless. This version returns circular edge to edge + grid distance,
// so that tokens that are touching return 5.
if (canvas.grid.type === CONST.GRID_TYPES.GRIDLESS) {
const boundsCorrection = canvas.grid.distance / canvas.grid.size;
const originRadius = (this.bounds.width * boundsCorrection) / 2;
const targetRadius = (target.bounds.width * boundsCorrection) / 2;
const distance = canvas.grid.measurePath([originPoint, destinationPoint]).distance;
const originRadius = (thisBounds.width * boundsCorrection) / 2;
const targetRadius = (targetBounds.width * boundsCorrection) / 2;
const distance = canvas.grid.measurePath([
{ ...originPoint, elevation: 0 },
{ ...destinationPoint, elevation }
]).distance;
return Math.floor(distance - originRadius - targetRadius + canvas.grid.distance);
}
// Compute what the closest grid space of each token is, then compute that distance
const originEdge = this.#getEdgeBoundary(this.bounds, originPoint, destinationPoint);
const targetEdge = this.#getEdgeBoundary(target.bounds, originPoint, destinationPoint);
// Compute what the closest grid space of each token is
const originEdge = this.#getEdgeBoundary(thisBounds, originPoint, destinationPoint);
const targetEdge = this.#getEdgeBoundary(targetBounds, originPoint, destinationPoint);
const adjustedOriginPoint = canvas.grid.getTopLeftPoint({
x: originEdge.x + Math.sign(originPoint.x - originEdge.x),
y: originEdge.y + Math.sign(originPoint.y - originEdge.y)
@ -77,7 +94,11 @@ export default class DhTokenPlaceable extends foundry.canvas.placeables.Token {
x: targetEdge.x + Math.sign(destinationPoint.x - targetEdge.x),
y: targetEdge.y + Math.sign(destinationPoint.y - targetEdge.y)
});
return canvas.grid.measurePath([adjustedOriginPoint, adjustDestinationPoint]).distance;
return canvas.grid.measurePath([
{ ...adjustedOriginPoint, elevation: 0 },
{ ...adjustDestinationPoint, elevation }
]).distance;
}
_onHoverIn(event, options) {