some data driven characteristics

packages/website/src/config/characteristics.ts

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+import {
+  CharacteristicType,
+  type Characteristic,
+} from "../types/characteristics";
+
+export const characteristics = {
+  gun_type: {
+    type: CharacteristicType.Enum,
+    compute({ gun }) {
+      return gun.gun_type!.$case;
+    },
+  },
+
+  clip_size: {
+    type: CharacteristicType.Number,
+
+    should_render({ gun }) {
+      return gun.gun_type!.$case !== "regular";
+    },
+
+    compute({ gun }) {
+      if (gun.gun_type!.$case === "regular") return 1;
+      return gun.gun_type!.value.shell_count;
+    },
+  },
+
+  assault_damage_coefficient: {
+    type: CharacteristicType.Number,
+
+    compute({ gun, shell, assault_distance }) {
+      if (
+        !gun.assault_ranges ||
+        !gun.assault_ranges.types.includes(shell.type)
+      ) {
+        return 1;
+      }
+
+      return (
+        gun.assault_ranges.ranges.find(
+          ({ distance }) => distance >= assault_distance,
+        )?.factor ?? 0
+      );
+    },
+  },
+
+  armor_damage_coefficient: {
+    type: CharacteristicType.Number,
+
+    compute() {
+      let coefficient = 1;
+
+      return coefficient;
+    },
+  },
+
+  damage: {
+    type: CharacteristicType.Number,
+    compute({ characteristic, shell, equalizer }) {
+      let coefficient = 1;
+
+      coefficient *= characteristic("armor_damage_coefficient") as number;
+      coefficient *= characteristic("assault_damage_coefficient") as number;
+      coefficient *= equalizer.damage;
+
+      return coefficient * shell.armor_damage;
+    },
+  },
+} satisfies Record<string, Characteristic>;