FantasyMaps Blast Zone

Blow up walls with measured templates. An OFM fork of theripper93/blastzone, kept alive for Foundry v11+ and wired into ofm-shared-world so a blast in one session propagates to every other GM sharing that world.

Before the blast:

After the blast:

Using it

Open any MeasuredTemplateConfig dialog — a Blast! button is added to the header. Confirming the dialog destroys every wall fully enclosed by the template and clips walls that cross its edges.

Triggering from a macro

const { BlastZone } = game.modules.get("ofm-blastzone").api;
await new BlastZone(template).blast();

template can be either a MeasuredTemplate placeable or a MeasuredTemplateDocument. blast() resolves the containing scene and applies the wall changes there — so macros run from a non-viewed scene work too.

The returned object has { destroyed, created } if you want to chain further logic.

Compatibility

• Foundry v11 – v13 (verified on v13).
• Supports all four template types: circle, cone, ray, rectangle.
• Emits ofmSharedWorldChange with { type: "blast", data: polygon } when the scene has an ofm flag set — picked up by ofm-shared-world.

Installing

Manifest URL:

https://raw.githubusercontent.com/openfantasymap/ofm-blastzone/master/module.json