add environmental protection

src/module/powers/elementalManipulation.js

@@ -6,7 +6,7 @@ export class ElementalManipulationEffect extends PowerEffect {
   }
 
   get icon() {
-    return 'icons/magic/earth/projectiles-stone-salvo-gray.webp';
+    return 'icons/magic/symbols/elements-air-earth-fire-water.webp';
   }
 
   get duration() {

src/module/powers/environmentalProtection.js

@@ -0,0 +1,80 @@
+import { moduleName } from '../globals.js';
+import { PowerEffect } from './basePowers.js';
+
+export class EnvironmentalProtectionEffect extends PowerEffect {
+  get name() {
+    return 'Environmental Protection';
+  }
+
+  get duration() {
+    return 600 * (this.data?.raise ? 8 : 1);
+  }
+
+  get icon() {
+    return 'icons/magic/defensive/barrier-shield-dome-pink.webp';
+  }
+
+  get hasAdditionalRecipients() {
+    return true;
+  }
+
+  get additionalRecipientCost() {
+    return 1;
+  }
+
+  get isTargeted() {
+    return true;
+  }
+
+  get modifiers() {
+    return [
+      ...super.modifiers,
+      {
+        name: 'Environmental Resistance',
+        id: 'resist',
+        value: 1,
+        type: 'checkbox',
+        default: false,
+        epic: false,
+        effect: true,
+        icon: 'icons/magic/defensive/barrier-shield-dome-blue-purple.webp',
+        changes: [
+          {
+            key: `flags.${moduleName}.environmentalResistance`,
+            value: true,
+            priority: 0,
+            mode: foundry.CONST.ACTIVE_EFFECT_MODES.OVERRIDE,
+          },
+        ],
+      },
+      {
+        name: 'Planar Adaptation',
+        id: 'planar',
+        value: 2,
+        type: 'checkbox',
+        default: false,
+        epic: false,
+        effect: false,
+      },
+    ];
+  }
+
+  get description() {
+    let text = super.description;
+    text += `<p>Breathe, speak, and move at normal pace in an otherwise fatal
+    environment.
+    `;
+    if (this.data.resist) {
+      text += `Gain resistances to one energy source, reducing damage by
+      ${this.data.raise ? 6 : 4}.
+    `;
+    }
+    if (this.data.planar) {
+      text += `This also protects against the extreme conditions that on other
+      planes of existance.
+      `;
+    }
+    text += '</p>';
+    return text;
+  }
+}

src/module/powers/powers.js

@@ -24,6 +24,7 @@ import { DrainPowerPointsEffect } from './drainPowerPoints.js';
 import { ElementalManipulationEffect } from './elementalManipulation.js';
 import { EmpathyEffect } from './empathy.js';
 import { EntangleEffect } from './entangle.js';
+import { EnvironmentalProtectionEffect } from './environmentalProtection.js';
 
 const PowerClasses = {
   'arcane-protection': ArcaneProtectionEffect,
@@ -55,6 +56,7 @@ const PowerClasses = {
   'elemental-manipulation': ElementalManipulationEffect,
   empathy: EmpathyEffect,
   entangle: EntangleEffect,
+  'environmental-protection': EnvironmentalProtectionEffect,
   'lower-trait': BoostLowerTraitEffect,
 };