Initial

resources/app/client-esm/data/region-behaviors/suppress-weather.mjs

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+import RegionBehaviorType from "./base.mjs";
+import RegionMesh from "../../canvas/regions/mesh.mjs";
+import {REGION_EVENTS} from "../../../common/constants.mjs";
+
+/**
+ * The data model for a behavior that allows to suppress weather effects within the Region
+ */
+export default class SuppressWeatherRegionBehaviorType extends RegionBehaviorType {
+
+  /** @override */
+  static LOCALIZATION_PREFIXES = ["BEHAVIOR.TYPES.suppressWeather", "BEHAVIOR.TYPES.base"];
+
+  /* ---------------------------------------- */
+
+  /** @override */
+  static defineSchema() {
+    return {};
+  }
+
+  /* ---------------------------------------- */
+
+  /**
+   * Called when the status of the weather behavior is changed.
+   * @param {RegionEvent} event
+   * @this {SuppressWeatherRegionBehaviorType}
+   */
+  static async #onBehaviorStatus(event) {
+
+    // Create mesh
+    if ( event.data.viewed === true ) {
+      const mesh = new RegionMesh(this.region.object);
+      mesh.name = this.behavior.uuid;
+      mesh.blendMode = PIXI.BLEND_MODES.ERASE;
+      canvas.weather.suppression.addChild(mesh);
+    }
+
+    // Destroy mesh
+    else if ( event.data.viewed === false ) {
+      const mesh = canvas.weather.suppression.getChildByName(this.behavior.uuid);
+      mesh.destroy();
+    }
+  }
+
+  /* ---------------------------------------- */
+
+  /** @override */
+  static events = {
+    [REGION_EVENTS.BEHAVIOR_STATUS]: this.#onBehaviorStatus
+  };
+}