feat: support frontier defensive structures

proto/cityio/entity/v1/battle.proto

@@ -24,6 +24,8 @@ message BattleSide {
   int64 starting_militia_count = 8;
   BattleLossSummary cumulative_losses = 9;
   BattleLossSummary last_round_losses = 10;
+  // Effective durability added by a settlement center and/or owned fort.
+  int32 defense_bonus_percent = 11;
 }
 
 // Battle exists only while combat is active. Each side can contain armies

proto/cityio/entity/v1/building.proto

@@ -6,7 +6,7 @@ import "cityio/entity/v1/common.proto";
 import "cityio/entity/v1/ids.proto";
 import "google/protobuf/timestamp.proto";
 
-// Building is a structure within a city.
+// Building is either part of a city or a standalone player-owned structure.
 message Building {
   BuildingId building_id = 1;
   CityId city_id = 2;
@@ -16,4 +16,7 @@ message Building {
   Coordinates coords = 6;
   optional google.protobuf.Timestamp construction_start = 7;
   optional google.protobuf.Timestamp construction_end = 8;
+  // Set only for standalone structures. City buildings inherit ownership from
+  // their city and continue to use city_id.
+  optional UserId owner = 9;
 }

proto/cityio/entity/v1/common.proto

@@ -18,6 +18,8 @@ enum BuildingType {
   BUILDING_TYPE_HOUSE = 4;
   BUILDING_TYPE_FARM = 5;
   BUILDING_TYPE_MINE = 6;
+  BUILDING_TYPE_WATCHTOWER = 7;
+  BUILDING_TYPE_FORT = 8;
 }
 
 // TroopType identifies a kind of troop.

proto/cityio/service/v1/building.proto

@@ -7,6 +7,8 @@ import "cityio/entity/v1/common.proto";
 import "cityio/entity/v1/ids.proto";
 
 message CreateBuildingRequest {
+  // Required for city buildings and omitted for standalone watchtowers/forts,
+  // which require one of the caller's armies on the target tile.
   cityio.entity.v1.CityId city_id = 1;
   cityio.entity.v1.BuildingType type = 2;
   cityio.entity.v1.Coordinates coords = 3;
@@ -33,6 +35,7 @@ message DeleteBuildingRequest {
 message DeleteBuildingResponse {}
 
 message ListBuildingsRequest {
+  // When omitted, returns the caller's standalone structures.
   cityio.entity.v1.CityId city_id = 1;
 }
 message ListBuildingsResponse {

proto/cityio/service/v1/config.proto

@@ -25,6 +25,10 @@ message BuildingLevelStats {
   double population = 5;
   // Barracks only: throughput relative to a level-one training lane.
   double training_speed_multiplier = 6;
+  // Watchtower only: Chebyshev map-vision radius at this completed level.
+  int32 vision_radius = 7;
+  // Centers and forts: effective durability added during eligible battles.
+  int32 defense_bonus_percent = 8;
 }
 
 message BuildingConfig {
@@ -58,6 +62,7 @@ message GetGameConfigResponse {
   repeated BuildingConfig buildings = 5;
   google.protobuf.Duration city_tick = 6;
   PopulationPolicyConfig population_policy = 7;
+  int32 structure_placement_radius = 8;
 }
 
 service ConfigService {

src/lib/game/sprites.ts

@@ -4,7 +4,7 @@ import { tileHash } from './colors';
 
 export type TerrainKind = 'grassland' | 'plains' | 'forest' | 'hills' | 'mountains' | 'desert' | 'marsh' | 'water' | 'fog';
 export type TerrainNeighbors = readonly [TerrainKind | null, TerrainKind | null, TerrainKind | null, TerrainKind | null];
-export type StructureKind = 'house' | 'farm' | 'mine' | 'barracks' | 'city_center' | 'town_center';
+export type StructureKind = 'house' | 'farm' | 'mine' | 'barracks' | 'watchtower' | 'fort' | 'city_center' | 'town_center';
 
 const PAD = 2;
 const W = 2 * HW + PAD * 2;
@@ -52,6 +52,8 @@ const STRUCTURE_HEADROOM: Record<StructureKind, number> = {
   mine: 14,
   house: 24,
   barracks: 28,
+  watchtower: 42,
+  fort: 30,
   town_center: 32,
   city_center: 42
 };
@@ -320,6 +322,48 @@ function drawBarracks(ctx: CanvasRenderingContext2D, cx: number, cy: number) {
   ctx.fillRect(cx - 2, baseY - 5, 4, 7);
 }
 
+function drawWatchtower(ctx: CanvasRenderingContext2D, cx: number, cy: number) {
+  const baseY = cy - 2;
+  drawStructureShadow(ctx, cx, cy, 10);
+  ctx.fillStyle = '#76563c';
+  ctx.fillRect(cx - 7, baseY - 27, 4, 29);
+  ctx.fillRect(cx + 3, baseY - 27, 4, 29);
+  ctx.strokeStyle = '#4d3524';
+  ctx.lineWidth = 2;
+  ctx.beginPath();
+  ctx.moveTo(cx - 6, baseY - 20);
+  ctx.lineTo(cx + 6, baseY - 5);
+  ctx.moveTo(cx + 6, baseY - 20);
+  ctx.lineTo(cx - 6, baseY - 5);
+  ctx.stroke();
+  ctx.fillStyle = '#9a7650';
+  ctx.fillRect(cx - 11, baseY - 31, 22, 7);
+  pitchedRoof(ctx, cx, baseY - 31, 13, 8, 0x5c3926);
+  ctx.fillStyle = '#32251a';
+  ctx.fillRect(cx - 2, baseY - 29, 4, 3);
+}
+
+function drawFort(ctx: CanvasRenderingContext2D, cx: number, cy: number) {
+  const baseY = cy - 2;
+  drawStructureShadow(ctx, cx, cy, 17);
+  ctx.fillStyle = '#8f8b7c';
+  ctx.fillRect(cx - 16, baseY - 16, 32, 18);
+  ctx.fillStyle = '#777568';
+  ctx.fillRect(cx + 3, baseY - 16, 13, 18);
+  ctx.fillStyle = '#aaa594';
+  for (let x = -16; x <= 11; x += 9) ctx.fillRect(cx + x, baseY - 21, 6, 6);
+  ctx.fillStyle = '#4c4438';
+  ctx.fillRect(cx - 4, baseY - 7, 8, 9);
+  ctx.strokeStyle = 'rgba(55,52,45,.55)';
+  ctx.lineWidth = 1;
+  for (let y = baseY - 12; y < baseY; y += 5) {
+    ctx.beginPath();
+    ctx.moveTo(cx - 15, y);
+    ctx.lineTo(cx + 15, y);
+    ctx.stroke();
+  }
+}
+
 function drawTownCenter(ctx: CanvasRenderingContext2D, cx: number, cy: number) {
   const baseY = cy - 2;
   drawStructureShadow(ctx, cx, cy, 16);
@@ -438,6 +482,12 @@ function renderStructure(kind: StructureKind): HTMLCanvasElement {
     case 'barracks':
       drawBarracks(ctx, cx, cy);
       break;
+    case 'watchtower':
+      drawWatchtower(ctx, cx, cy);
+      break;
+    case 'fort':
+      drawFort(ctx, cx, cy);
+      break;
     case 'town_center':
       drawTownCenter(ctx, cx, cy);
       break;

src/lib/gen/cityio/entity/v1/battle_pb.ts

@@ -2,30 +2,26 @@
 // @generated from file cityio/entity/v1/battle.proto (package cityio.entity.v1, syntax proto3)
 /* eslint-disable */
 
-import type { GenFile, GenMessage } from '@bufbuild/protobuf/codegenv2';
-import { fileDesc, messageDesc } from '@bufbuild/protobuf/codegenv2';
-import type { TroopStack } from './army_pb';
-import { file_cityio_entity_v1_army } from './army_pb';
-import type { ArmyId, BattleId, CityId, TileId, UserId } from './ids_pb';
-import { file_cityio_entity_v1_ids } from './ids_pb';
-import type { Timestamp } from '@bufbuild/protobuf/wkt';
-import { file_google_protobuf_timestamp } from '@bufbuild/protobuf/wkt';
-import type { Message } from '@bufbuild/protobuf';
+import type { GenFile, GenMessage } from "@bufbuild/protobuf/codegenv2";
+import { fileDesc, messageDesc } from "@bufbuild/protobuf/codegenv2";
+import type { TroopStack } from "./army_pb";
+import { file_cityio_entity_v1_army } from "./army_pb";
+import type { ArmyId, BattleId, CityId, TileId, UserId } from "./ids_pb";
+import { file_cityio_entity_v1_ids } from "./ids_pb";
+import type { Timestamp } from "@bufbuild/protobuf/wkt";
+import { file_google_protobuf_timestamp } from "@bufbuild/protobuf/wkt";
+import type { Message } from "@bufbuild/protobuf";
 
 /**
  * Describes the file cityio/entity/v1/battle.proto.
  */
-export const file_cityio_entity_v1_battle: GenFile =
-  /*@__PURE__*/
-  fileDesc(
-    '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',
-    [file_cityio_entity_v1_army, file_cityio_entity_v1_ids, file_google_protobuf_timestamp]
-  );
+export const file_cityio_entity_v1_battle: GenFile = /*@__PURE__*/
+  fileDesc("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", [file_cityio_entity_v1_army, file_cityio_entity_v1_ids, file_google_protobuf_timestamp]);
 
 /**
  * @generated from message cityio.entity.v1.BattleLossSummary
  */
-export type BattleLossSummary = Message<'cityio.entity.v1.BattleLossSummary'> & {
+export type BattleLossSummary = Message<"cityio.entity.v1.BattleLossSummary"> & {
   /**
    * @generated from field: repeated cityio.entity.v1.TroopStack troops = 1;
    */
@@ -46,12 +42,13 @@ export type BattleLossSummary = Message<'cityio.entity.v1.BattleLossSummary'> &
  * Describes the message cityio.entity.v1.BattleLossSummary.
  * Use `create(BattleLossSummarySchema)` to create a new message.
  */
-export const BattleLossSummarySchema: GenMessage<BattleLossSummary> = /*@__PURE__*/ messageDesc(file_cityio_entity_v1_battle, 0);
+export const BattleLossSummarySchema: GenMessage<BattleLossSummary> = /*@__PURE__*/
+  messageDesc(file_cityio_entity_v1_battle, 0);
 
 /**
  * @generated from message cityio.entity.v1.BattleSide
  */
-export type BattleSide = Message<'cityio.entity.v1.BattleSide'> & {
+export type BattleSide = Message<"cityio.entity.v1.BattleSide"> & {
   /**
    * @generated from field: repeated cityio.entity.v1.UserId user_ids = 1;
    */
@@ -103,13 +100,21 @@ export type BattleSide = Message<'cityio.entity.v1.BattleSide'> & {
    * @generated from field: cityio.entity.v1.BattleLossSummary last_round_losses = 10;
    */
   lastRoundLosses?: BattleLossSummary | undefined;
+
+  /**
+   * Effective durability added by a settlement center and/or owned fort.
+   *
+   * @generated from field: int32 defense_bonus_percent = 11;
+   */
+  defenseBonusPercent: number;
 };
 
 /**
  * Describes the message cityio.entity.v1.BattleSide.
  * Use `create(BattleSideSchema)` to create a new message.
  */
-export const BattleSideSchema: GenMessage<BattleSide> = /*@__PURE__*/ messageDesc(file_cityio_entity_v1_battle, 1);
+export const BattleSideSchema: GenMessage<BattleSide> = /*@__PURE__*/
+  messageDesc(file_cityio_entity_v1_battle, 1);
 
 /**
  * Battle exists only while combat is active. Each side can contain armies
@@ -118,7 +123,7 @@ export const BattleSideSchema: GenMessage<BattleSide> = /*@__PURE__*/ messageDes
  *
  * @generated from message cityio.entity.v1.Battle
  */
-export type Battle = Message<'cityio.entity.v1.Battle'> & {
+export type Battle = Message<"cityio.entity.v1.Battle"> & {
   /**
    * @generated from field: cityio.entity.v1.BattleId battle_id = 1;
    */
@@ -159,4 +164,5 @@ export type Battle = Message<'cityio.entity.v1.Battle'> & {
  * Describes the message cityio.entity.v1.Battle.
  * Use `create(BattleSchema)` to create a new message.
  */
-export const BattleSchema: GenMessage<Battle> = /*@__PURE__*/ messageDesc(file_cityio_entity_v1_battle, 2);
+export const BattleSchema: GenMessage<Battle> = /*@__PURE__*/
+  messageDesc(file_cityio_entity_v1_battle, 2);

src/lib/gen/cityio/entity/v1/building_pb.ts

@@ -6,7 +6,7 @@ import type { GenFile, GenMessage } from "@bufbuild/protobuf/codegenv2";
 import { fileDesc, messageDesc } from "@bufbuild/protobuf/codegenv2";
 import type { BuildingType, Coordinates } from "./common_pb";
 import { file_cityio_entity_v1_common } from "./common_pb";
-import type { BuildingId, CityId } from "./ids_pb";
+import type { BuildingId, CityId, UserId } from "./ids_pb";
 import { file_cityio_entity_v1_ids } from "./ids_pb";
 import type { Timestamp } from "@bufbuild/protobuf/wkt";
 import { file_google_protobuf_timestamp } from "@bufbuild/protobuf/wkt";
@@ -16,10 +16,10 @@ import type { Message } from "@bufbuild/protobuf";
  * Describes the file cityio/entity/v1/building.proto.
  */
 export const file_cityio_entity_v1_building: GenFile = /*@__PURE__*/
-  fileDesc("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", [file_cityio_entity_v1_common, file_cityio_entity_v1_ids, file_google_protobuf_timestamp]);
+  fileDesc("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", [file_cityio_entity_v1_common, file_cityio_entity_v1_ids, file_google_protobuf_timestamp]);
 
 /**
- * Building is a structure within a city.
+ * Building is either part of a city or a standalone player-owned structure.
  *
  * @generated from message cityio.entity.v1.Building
  */
@@ -63,6 +63,14 @@ export type Building = Message<"cityio.entity.v1.Building"> & {
    * @generated from field: optional google.protobuf.Timestamp construction_end = 8;
    */
   constructionEnd?: Timestamp | undefined;
+
+  /**
+   * Set only for standalone structures. City buildings inherit ownership from
+   * their city and continue to use city_id.
+   *
+   * @generated from field: optional cityio.entity.v1.UserId owner = 9;
+   */
+  owner?: UserId | undefined;
 };
 
 /**

src/lib/gen/cityio/entity/v1/common_pb.ts

@@ -10,7 +10,7 @@ import type { Message } from "@bufbuild/protobuf";
  * Describes the file cityio/entity/v1/common.proto.
  */
 export const file_cityio_entity_v1_common: GenFile = /*@__PURE__*/
-  fileDesc("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");
+  fileDesc("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");
 
 /**
  * Coordinates is a position on the game map.
@@ -130,6 +130,16 @@ export enum BuildingType {
    * @generated from enum value: BUILDING_TYPE_MINE = 6;
    */
   MINE = 6,
+
+  /**
+   * @generated from enum value: BUILDING_TYPE_WATCHTOWER = 7;
+   */
+  WATCHTOWER = 7,
+
+  /**
+   * @generated from enum value: BUILDING_TYPE_FORT = 8;
+   */
+  FORT = 8,
 }
 
 /**

src/lib/gen/cityio/service/v1/building_pb.ts

@@ -23,6 +23,9 @@ export const file_cityio_service_v1_building: GenFile = /*@__PURE__*/
  */
 export type CreateBuildingRequest = Message<"cityio.service.v1.CreateBuildingRequest"> & {
   /**
+   * Required for city buildings and omitted for standalone watchtowers/forts,
+   * which require one of the caller's armies on the target tile.
+   *
    * @generated from field: cityio.entity.v1.CityId city_id = 1;
    */
   cityId?: CityId | undefined;
@@ -161,6 +164,8 @@ export const DeleteBuildingResponseSchema: GenMessage<DeleteBuildingResponse> =
  */
 export type ListBuildingsRequest = Message<"cityio.service.v1.ListBuildingsRequest"> & {
   /**
+   * When omitted, returns the caller's standalone structures.
+   *
    * @generated from field: cityio.entity.v1.CityId city_id = 1;
    */
   cityId?: CityId | undefined;