Index: binaries/data/mods/public/simulation/helpers/Attacking.js
===================================================================
--- binaries/data/mods/public/simulation/helpers/Attacking.js
+++ binaries/data/mods/public/simulation/helpers/Attacking.js
@@ -275,6 +275,26 @@
 			else
 				damageMultiplier = 0;
 		}
+		else if (data.shape == 'Cone') // Rounded triangular shape
+		{
+			// The entity has a position here since it was returned by the range manager.
+			let entityPosition = Engine.QueryInterface(ent, IID_Position).GetPosition2D();
+			let relativePos = entityPosition.sub(data.origin).normalize().mult(distance);
+
+			let direction = Vector2D.from3D(data.direction);
+			let parallelPos = relativePos.dot(direction);
+			let perpPos = relativePos.cross(direction);
+
+			let width = distance;
+
+			// Check that the unit is within the distance splash width of the line starting at the missile's
+			// landing point which extends in the direction of the missile for length splash radius.
+			if (parallelPos >= 0 && Math.abs(perpPos) < width) // If in radius, quadratic falloff in both directions
+				damageMultiplier = (1 - parallelPos * parallelPos / (data.radius * data.radius)) *
+					(1 - perpPos * perpPos / (width * width));
+			else
+				damageMultiplier = 0;
+		}
 		else // In case someone calls this function with an invalid shape.
 		{
 			warn("The " + data.shape + " splash damage shape is not implemented!");