adding log camps

game/territory-autobattler/scenes/game/hex_grid_screen.gd

@@ -14,6 +14,7 @@ var resources_request: HTTPRequest
 var units_request: HTTPRequest
 var train_unit_request: HTTPRequest
 var claim_request: HTTPRequest
+var build_request: HTTPRequest
 var resources_timer: Timer
 var session: Dictionary = {}
 var escape_overlay: Control
@@ -31,9 +32,11 @@ var training_started_unix := 0.0
 var training_completes_unix := 0.0
 var training_completion_refresh_requested := false
 var claim_button: Button
+var build_log_camp_button: Button
 var selected_q := 0
 var selected_r := 0
 var selected_can_claim := false
+var selected_can_build_log_camp := false
 
 
 func _ready() -> void:
@@ -104,9 +107,9 @@ func _build_ui() -> void:
 	legend.add_theme_constant_override("separation", 12)
 	top_content.add_child(legend)
 
-	legend.add_child(_legend_item(Color(0.78, 0.62, 0.19), "Home"))
+	legend.add_child(_legend_item(Color(1.0, 0.76, 0.16), "Home"))
-	legend.add_child(_legend_item(Color(0.26, 0.62, 0.32), "Yours"))
+	legend.add_child(_legend_item(Color(0.16, 0.86, 0.92), "Yours"))
-	legend.add_child(_legend_item(Color(0.58, 0.28, 0.24), "Rival"))
+	legend.add_child(_legend_item(Color(0.95, 0.22, 0.18), "Rival"))
 	legend.add_child(_legend_item(Color(0.38, 0.56, 0.36), "Open"))
 	legend.add_child(_legend_item(Color(0.045, 0.065, 0.065), "Unknown"))
 
@@ -181,8 +184,8 @@ func _build_ui() -> void:
 	bottom_content.add_child(coordinate_label)
 
 	unit_label = Label.new()
-	unit_label.text = "Scouts: --"
+	unit_label.text = "Scouts: -- | Queue: --"
-	unit_label.custom_minimum_size = Vector2(88, 0)
+	unit_label.custom_minimum_size = Vector2(142, 0)
 	unit_label.add_theme_font_size_override("font_size", 14)
 	unit_label.add_theme_color_override("font_color", Color(0.72, 0.82, 0.78))
 	bottom_content.add_child(unit_label)
@@ -217,6 +220,11 @@ func _build_ui() -> void:
 	claim_button.pressed.connect(_claim_selected_tile)
 	bottom_content.add_child(claim_button)
 
+	build_log_camp_button = _small_button("Build Log Camp")
+	build_log_camp_button.disabled = true
+	build_log_camp_button.pressed.connect(_build_log_camp)
+	bottom_content.add_child(build_log_camp_button)
+
 	http_request = HTTPRequest.new()
 	http_request.request_completed.connect(_on_home_request_completed)
 	add_child(http_request)
@@ -241,6 +249,10 @@ func _build_ui() -> void:
 	claim_request.request_completed.connect(_on_claim_request_completed)
 	add_child(claim_request)
 
+	build_request = HTTPRequest.new()
+	build_request.request_completed.connect(_on_build_request_completed)
+	add_child(build_request)
+
 	resources_timer = Timer.new()
 	resources_timer.wait_time = RESOURCE_REFRESH_SECONDS
 	resources_timer.autostart = false
@@ -259,8 +271,11 @@ func _on_tile_selected(q: int, r: int, terrain: String) -> void:
 	selected_q = q
 	selected_r = r
 	selected_can_claim = terrain.contains("Unclaimed")
+	selected_can_build_log_camp = terrain.contains("Forest") and terrain.contains("Your territory") and not terrain.contains("Log Camp")
 	if claim_button:
 		claim_button.disabled = not selected_can_claim
+	if build_log_camp_button:
+		build_log_camp_button.disabled = not selected_can_build_log_camp
 	if coordinate_label:
 		coordinate_label.text = "Selected q:%d r:%d | %s territory" % [q, r, terrain]
 
@@ -412,7 +427,9 @@ func _on_resources_request_completed(result: int, response_code: int, _headers:
 	var resources: Dictionary = parsed
 	var gold: int = int(resources.get("gold", 0))
 	var gold_per_minute: int = int(resources.get("goldPerMinute", 0))
-	gold_label.text = "Gold: %d (+%d/min)" % [gold, gold_per_minute]
+	var wood: int = int(resources.get("wood", 0))
+	var wood_per_minute: int = int(resources.get("woodPerMinute", 0))
+	gold_label.text = "Gold: %d (+%d/min) | Wood: %d (+%d/min)" % [gold, gold_per_minute, wood, wood_per_minute]
 
 	var anchor_text: String = str(resources.get("lastGoldGeneratedAtUtc", ""))
 	gold_tick_anchor_unix = _parse_utc_timestamp(anchor_text)
@@ -452,12 +469,13 @@ func _on_units_request_completed(result: int, response_code: int, _headers: Pack
 		return
 
 	var units: Dictionary = parsed
-	unit_label.text = "Scouts: %d" % int(units.get("completedScouts", 0))
-
 	var training: Array = []
 	var raw_training = units.get("training", [])
 	if typeof(raw_training) == TYPE_ARRAY:
 		training = raw_training
+
+	unit_label.text = "Scouts: %d | Queue: %d" % [int(units.get("completedScouts", 0)), training.size()]
+
 	if training.is_empty():
 		training_started_unix = 0.0
 		training_completes_unix = 0.0
@@ -572,6 +590,55 @@ func _on_claim_request_completed(result: int, response_code: int, _headers: Pack
 	_refresh_player_state()
 
 
+func _build_log_camp() -> void:
+	if not selected_can_build_log_camp:
+		coordinate_label.text = "Select controlled Forest territory without a building."
+		return
+
+	var access_token: String = str(session.get("accessToken", ""))
+	if access_token.is_empty():
+		coordinate_label.text = "No auth token available. Log Camp was not built."
+		return
+
+	if build_request.get_http_client_status() != HTTPClient.STATUS_DISCONNECTED:
+		return
+
+	build_log_camp_button.disabled = true
+	coordinate_label.text = "Building Log Camp at q:%d r:%d..." % [selected_q, selected_r]
+	var error: int = build_request.request(
+		LOCATIONS_BASE_URL + "/api/locations/build",
+		PackedStringArray([
+			"Content-Type: application/json",
+			"Authorization: Bearer %s" % access_token
+		]),
+		HTTPClient.METHOD_POST,
+		JSON.stringify({ "q": selected_q, "r": selected_r, "buildingType": "LogCamp" })
+	)
+	if error != OK:
+		build_log_camp_button.disabled = false
+		coordinate_label.text = "Could not contact the locations service."
+
+
+func _on_build_request_completed(result: int, response_code: int, _headers: PackedStringArray, body: PackedByteArray) -> void:
+	var text: String = body.get_string_from_utf8()
+	if result != HTTPRequest.RESULT_SUCCESS:
+		coordinate_label.text = "Log Camp build request failed."
+		build_log_camp_button.disabled = not selected_can_build_log_camp
+		return
+
+	if response_code < 200 or response_code >= 300:
+		coordinate_label.text = "Log Camp build failed: %s" % text
+		build_log_camp_button.disabled = not selected_can_build_log_camp
+		_refresh_player_state()
+		return
+
+	selected_can_build_log_camp = false
+	build_log_camp_button.disabled = true
+	coordinate_label.text = "Log Camp built. Wood production increased."
+	_load_visible_locations()
+	_refresh_player_state()
+
+
 func _update_tick_bar() -> void:
 	if not tick_bar or not tick_label:
 		return

game/territory-autobattler/scenes/game/hex_grid_view.gd

@@ -6,6 +6,9 @@ signal tile_selected(q: int, r: int, terrain: String)
 const HEX_SIZE := 42.0
 const ISO_Y_SCALE := 0.56
 const SQRT_3 := 1.7320508075688772
+const INFLUENCE_RADIUS_X := 54.0
+const INFLUENCE_RADIUS_Y := 30.0
+const INFLUENCE_LINK_WIDTH := 54.0
 
 var camera_offset: Vector2 = Vector2.ZERO
 var zoom: float = 1.0
@@ -101,10 +104,11 @@ func _draw() -> void:
 		return _tile_center(int(a["q"]), int(a["r"])).y < _tile_center(int(b["q"]), int(b["r"])).y
 	)
 
+	_draw_control_regions(sorted_tiles)
+
 	for tile in sorted_tiles:
 		_draw_tile(tile)
 
-
 func _draw_grid_lines() -> void:
 	var line_color: Color = Color(0.12, 0.17, 0.17, 0.35)
 	for x in range(-8, 9):
@@ -155,10 +159,55 @@ func _draw_tile(tile: Dictionary) -> void:
 		draw_polyline(_closed_points(points), Color(0.95, 0.76, 0.28), 4.0)
 	elif coord == home_tile:
 		draw_polyline(_closed_points(points), Color(1.0, 0.88, 0.38), 3.0)
-	elif is_owned:
+
-		draw_polyline(_closed_points(points), Color(0.48, 0.95, 0.55), 3.0)
+	var visible_location: Dictionary = visible_tiles.get(key, {})
-	elif is_rival:
+	var building_type: String = str(visible_location.get("buildingType", ""))
-		draw_polyline(_closed_points(points), Color(0.94, 0.36, 0.29), 3.0)
+	if building_type == "LogCamp":
+		_draw_log_camp_marker(center, height)
+
+
+func _draw_control_regions(sorted_tiles: Array) -> void:
+	for control in ["owned", "rival"]:
+		var control_tiles: Array = sorted_tiles.filter(func(tile: Dictionary) -> bool:
+			return _tile_control(_tile_key(int(tile["q"]), int(tile["r"]))) == control
+		)
+		if control_tiles.is_empty():
+			continue
+
+		_draw_control_layer(control_tiles, control, 1.34, 0.16, INFLUENCE_LINK_WIDTH + 18.0)
+		_draw_control_layer(control_tiles, control, 1.08, 0.28, INFLUENCE_LINK_WIDTH)
+		_draw_control_layer(control_tiles, control, 0.82, 0.20, INFLUENCE_LINK_WIDTH - 16.0)
+
+
+func _draw_control_layer(control_tiles: Array, control: String, layer_scale: float, alpha: float, link_width: float) -> void:
+	var control_color: Color = _control_color(control)
+	var layer_color := Color(control_color.r, control_color.g, control_color.b, alpha)
+	var tile_lookup := {}
+
+	for tile in control_tiles:
+		var q: int = int(tile["q"])
+		var r: int = int(tile["r"])
+		tile_lookup[_tile_key(q, r)] = true
+
+	for tile in control_tiles:
+		var q: int = int(tile["q"])
+		var r: int = int(tile["r"])
+		var center: Vector2 = _tile_center(q, r)
+
+		for neighbor in _neighbor_coordinates(q, r):
+			var neighbor_key: String = _tile_key(neighbor.x, neighbor.y)
+			if not tile_lookup.has(neighbor_key):
+				continue
+			if _tile_key(q, r) > neighbor_key:
+				continue
+
+			var neighbor_center: Vector2 = _tile_center(neighbor.x, neighbor.y)
+			draw_line(center, neighbor_center, layer_color, link_width * zoom * layer_scale)
+
+		draw_colored_polygon(
+			_ellipse_points(center, INFLUENCE_RADIUS_X * zoom * layer_scale, INFLUENCE_RADIUS_Y * zoom * layer_scale),
+			layer_color
+		)
 
 
 func _update_hover(mouse_position: Vector2) -> void:
@@ -202,11 +251,15 @@ func _screen_point(world_point: Vector2) -> Vector2:
 
 
 func _hex_points(center: Vector2, height: float) -> PackedVector2Array:
+	return _hex_points_scaled(center, height, 1.0)
+
+
+func _hex_points_scaled(center: Vector2, height: float, point_scale: float) -> PackedVector2Array:
 	var points: PackedVector2Array = PackedVector2Array()
 	var top_lift: Vector2 = Vector2(0, -height * zoom)
 	for i in range(6):
 		var angle: float = deg_to_rad(60.0 * i + 30.0)
-		var local: Vector2 = Vector2(cos(angle) * HEX_SIZE, sin(angle) * HEX_SIZE * ISO_Y_SCALE) * zoom
+		var local: Vector2 = Vector2(cos(angle) * HEX_SIZE * point_scale, sin(angle) * HEX_SIZE * ISO_Y_SCALE * point_scale) * zoom
 		points.append(center + local + top_lift)
 	return points
 
@@ -218,6 +271,33 @@ func _closed_points(points: PackedVector2Array) -> PackedVector2Array:
 	return closed
 
 
+func _ellipse_points(center: Vector2, radius_x: float, radius_y: float) -> PackedVector2Array:
+	var points: PackedVector2Array = PackedVector2Array()
+	for i in range(32):
+		var angle: float = TAU * float(i) / 32.0
+		points.append(center + Vector2(cos(angle) * radius_x, sin(angle) * radius_y))
+	return points
+
+
+func _draw_log_camp_marker(center: Vector2, height: float) -> void:
+	var marker_center: Vector2 = center + Vector2(0, -height * zoom - 2.0)
+	var width: float = 18.0 * zoom
+	var marker_height: float = 10.0 * zoom
+	var hut_color := Color(0.46, 0.29, 0.14)
+	var roof_color := Color(0.28, 0.17, 0.09)
+	var log_color := Color(0.72, 0.52, 0.28)
+
+	var roof := PackedVector2Array([
+		marker_center + Vector2(-width * 0.55, -marker_height * 0.12),
+		marker_center + Vector2(0, -marker_height * 0.75),
+		marker_center + Vector2(width * 0.55, -marker_height * 0.12)
+	])
+	draw_colored_polygon(roof, roof_color)
+	draw_rect(Rect2(marker_center + Vector2(-width * 0.38, -marker_height * 0.08), Vector2(width * 0.76, marker_height * 0.62)), hut_color, true)
+	draw_line(marker_center + Vector2(-width * 0.48, marker_height * 0.62), marker_center + Vector2(width * 0.48, marker_height * 0.62), log_color, 3.0 * zoom)
+	draw_line(marker_center + Vector2(-width * 0.38, marker_height * 0.86), marker_center + Vector2(width * 0.38, marker_height * 0.86), log_color.darkened(0.12), 3.0 * zoom)
+
+
 func _tile_data(q: int, r: int) -> Dictionary:
 	for tile in tiles:
 		if int(tile["q"]) == q and int(tile["r"]) == r:
@@ -269,27 +349,61 @@ func _ownership_fill_color(base_color: Color, coord: Vector2i, tile_visible: boo
 	if not tile_visible:
 		return Color(0.045, 0.065, 0.065)
 	if coord == home_tile:
-		return Color(0.78, 0.62, 0.19)
+		return base_color.lerp(Color(0.95, 0.72, 0.18), 0.38)
 	if is_owned:
-		return Color(0.26, 0.62, 0.32)
+		return base_color.lerp(Color(0.20, 0.68, 0.72), 0.32)
 	if is_rival:
-		return Color(0.58, 0.28, 0.24)
+		return base_color.lerp(Color(0.72, 0.22, 0.18), 0.35)
 	return base_color
 
 
+func _tile_control(key: String) -> String:
+	if owned_tiles.has(key):
+		return "owned"
+	if rival_tiles.has(key):
+		return "rival"
+	return ""
+
+
+func _control_color(control: String) -> Color:
+	match control:
+		"owned":
+			return Color(0.16, 0.86, 0.92)
+		"rival":
+			return Color(0.95, 0.22, 0.18)
+		_:
+			return Color(0.4, 0.5, 0.5)
+
+
+func _neighbor_coordinates(q: int, r: int) -> Array[Vector2i]:
+	return [
+		Vector2i(q + 1, r),
+		Vector2i(q + 1, r - 1),
+		Vector2i(q, r - 1),
+		Vector2i(q - 1, r),
+		Vector2i(q - 1, r + 1),
+		Vector2i(q, r + 1)
+	]
+
+
 func _tile_display_label(key: String, data: Dictionary) -> String:
 	var terrain: String = str(data.get("terrain", "Open"))
+	var building_type: String = str(data.get("buildingType", ""))
+	var building_label: String = ""
+	if building_type == "LogCamp":
+		building_label = " | Log Camp"
+
 	if home_tile == Vector2i(int(data.get("q", 0)), int(data.get("r", 0))):
-		return "%s | Your home" % terrain
+		return "%s | Your home%s" % [terrain, building_label]
 	if owned_tiles.has(key):
-		return "%s | Your territory" % terrain
+		return "%s | Your territory%s" % [terrain, building_label]
 	if rival_tiles.has(key):
 		var rival_data: Dictionary = rival_tiles[key]
 		var owner_username: String = _owner_username(rival_data)
 		if owner_username.is_empty():
-			return "%s | Unclaimed" % terrain
+			return "%s | Unclaimed%s" % [terrain, building_label]
-		return "%s | Controlled by %s" % [terrain, owner_username]
+		return "%s | Controlled by %s%s" % [terrain, owner_username, building_label]
-	return "%s | Unclaimed" % terrain
+	return "%s | Unclaimed%s" % [terrain, building_label]
 
 
 func _owner_username(location: Dictionary) -> String:

microservices/LocationsApi/Controllers/LocationsController.cs

@@ -113,6 +113,36 @@ public class LocationsController : ControllerBase
         return Ok(LocationResponse.FromLocation(location));
     }
 
+    [Authorize(Roles = "USER,SUPER")]
+    [HttpPost("build")]
+    public async Task<ActionResult<LocationResponse>> Build([FromBody] BuildLocationRequest request)
+    {
+        var username = User.FindFirstValue(ClaimTypes.Name);
+        if (string.IsNullOrWhiteSpace(username))
+        {
+            return Unauthorized();
+        }
+
+        try
+        {
+            var location = await _locations.BuildAsync(request, username);
+            if (location is null)
+            {
+                return NotFound("Build target must be controlled by the player.");
+            }
+
+            return Ok(LocationResponse.FromLocation(location));
+        }
+        catch (InvalidOperationException ex)
+        {
+            return BadRequest(ex.Message);
+        }
+        catch (ArgumentException ex)
+        {
+            return BadRequest(ex.Message);
+        }
+    }
+
     [Authorize(Roles = "USER,SUPER")]
     [HttpGet("home")]
     public async Task<ActionResult<LocationResponse>> GetHome()

microservices/LocationsApi/Models/Dto.cs

@@ -15,6 +15,13 @@ public class ClaimLocationRequest
     public int R { get; set; }
 }
 
+public class BuildLocationRequest
+{
+    public int Q { get; set; }
+    public int R { get; set; }
+    public string BuildingType { get; set; } = "LogCamp";
+}
+
 public class LocationResponse
 {
     public string Id { get; set; } = "";
@@ -25,6 +32,8 @@ public class LocationResponse
     public string? OwnerUsername { get; set; }
     public string? Label { get; set; }
     public int Level { get; set; }
+    public string? BuildingType { get; set; }
+    public DateTime? BuildingBuiltAtUtc { get; set; }
     public DateTime? HomeAssignedAtUtc { get; set; }
     public DateTime UpdatedAtUtc { get; set; }
     public bool IsVisible { get; set; } = true;
@@ -39,6 +48,8 @@ public class LocationResponse
         OwnerUsername = location.OwnerUsername,
         Label = location.Label,
         Level = location.Level,
+        BuildingType = location.BuildingType,
+        BuildingBuiltAtUtc = location.BuildingBuiltAtUtc,
         HomeAssignedAtUtc = location.HomeAssignedAtUtc,
         UpdatedAtUtc = location.UpdatedAtUtc,
         IsVisible = true

microservices/LocationsApi/Models/Location.cs

@@ -16,6 +16,8 @@ public class Location
     public string? OwnerUsername { get; set; }
     public string? Label { get; set; }
     public int Level { get; set; } = 1;
+    public string? BuildingType { get; set; }
+    public DateTime? BuildingBuiltAtUtc { get; set; }
     public DateTime? HomeAssignedAtUtc { get; set; }
     public DateTime CreatedAtUtc { get; set; } = DateTime.UtcNow;
     public DateTime UpdatedAtUtc { get; set; } = DateTime.UtcNow;

microservices/LocationsApi/Models/PlayerResources.cs

@@ -12,7 +12,10 @@ public class PlayerResources
     public string Username { get; set; } = "";
     public int Gold { get; set; } = 100;
     public int GoldPerMinute { get; set; } = 10;
+    public int Wood { get; set; }
+    public int WoodPerMinute { get; set; }
     public DateTime LastGoldGeneratedAtUtc { get; set; } = DateTime.UtcNow;
+    public DateTime LastWoodGeneratedAtUtc { get; set; } = DateTime.UtcNow;
     public DateTime CreatedAtUtc { get; set; } = DateTime.UtcNow;
     public DateTime UpdatedAtUtc { get; set; } = DateTime.UtcNow;
 }

microservices/LocationsApi/Models/ResourceDto.cs

@@ -5,7 +5,10 @@ public class PlayerResourcesResponse
     public string Username { get; set; } = "";
     public int Gold { get; set; }
     public int GoldPerMinute { get; set; }
+    public int Wood { get; set; }
+    public int WoodPerMinute { get; set; }
     public DateTime LastGoldGeneratedAtUtc { get; set; }
+    public DateTime LastWoodGeneratedAtUtc { get; set; }
     public DateTime UpdatedAtUtc { get; set; }
 
     public static PlayerResourcesResponse FromResources(PlayerResources resources) => new()
@@ -13,7 +16,10 @@ public class PlayerResourcesResponse
         Username = resources.Username,
         Gold = resources.Gold,
         GoldPerMinute = resources.GoldPerMinute,
+        Wood = resources.Wood,
+        WoodPerMinute = resources.WoodPerMinute,
         LastGoldGeneratedAtUtc = resources.LastGoldGeneratedAtUtc,
+        LastWoodGeneratedAtUtc = resources.LastWoodGeneratedAtUtc,
         UpdatedAtUtc = resources.UpdatedAtUtc
     };
 }

microservices/LocationsApi/README.md

@@ -8,6 +8,7 @@ Tracks hex locations for the territory map.
 - `GET /api/locations?minQ=-7&maxQ=7&minR=-7&maxR=7` List a coordinate range, constrained by visibility for USER.
 - `GET /api/locations/{q}/{r}` Fetch one visible location for USER, any known location for SUPER.
 - `POST /api/locations/claim` Claim visible unclaimed territory for the authenticated user. Normal players spend one completed Scout.
+- `POST /api/locations/build` Build on controlled territory.
 - `GET /api/locations/home` Get the authenticated user's home location.
 - `POST /api/locations/home` Assign or return the authenticated user's home location.
 - `GET /api/locations/visible` Get locations visible to the authenticated user.
@@ -27,7 +28,8 @@ locations are unowned `Open` records until claimed by a player.
 
 Player resource state is stored server-side in the `PlayerResources` collection.
 New players start with 100 gold. A player's headquarters generates 10 gold per
-minute. Generation is applied lazily when the resource record is read.
+minute. Log Camps generate wood. Generation is applied lazily when the resource
+record is read.
 
 ## Units
 
@@ -35,3 +37,9 @@ Unit training is stored server-side in the `UnitTraining` collection. The first
 unit type is `Scout`, which costs 50 gold and takes 60 seconds to train.
 Finished training is completed lazily when unit state is read. Claiming an
 unclaimed visible location consumes one completed Scout.
+
+## Buildings
+
+Buildings are stored on location records. The first building type is `LogCamp`,
+which can be built on controlled Forest territory and adds 5 wood per minute to
+the owning player's resource generation.

microservices/LocationsApi/Services/LocationService.cs

@@ -10,6 +10,7 @@ public class LocationService
     private readonly int _homeMinDistance;
     private readonly int _homeSearchRadius;
     private readonly int _visibilityDepth;
+    private readonly int _logCampWoodPerMinute;
 
     public LocationService(IConfiguration cfg, ResourceService resources)
     {
@@ -22,6 +23,9 @@ public class LocationService
         _homeMinDistance = int.TryParse(cfg["World:HomeMinDistance"], out var minDistance) ? Math.Max(1, minDistance) : 8;
         _homeSearchRadius = int.TryParse(cfg["World:HomeSearchRadius"], out var searchRadius) ? Math.Max(_homeMinDistance, searchRadius) : 80;
         _visibilityDepth = int.TryParse(cfg["World:VisibilityDepth"], out var visibilityDepth) ? Math.Max(0, visibilityDepth) : 3;
+        _logCampWoodPerMinute = int.TryParse(cfg["Buildings:LogCampWoodPerMinute"], out var logCampWoodPerMinute)
+            ? Math.Max(1, logCampWoodPerMinute)
+            : 5;
 
         var coordinateIndex = Builders<Location>.IndexKeys
             .Ascending(x => x.Q)
@@ -111,6 +115,53 @@ public class LocationService
         return await UpsertAsync(new UpsertLocationRequest { Q = q, R = r, Terrain = "Field" }, username);
     }
 
+    public async Task<Location?> BuildAsync(BuildLocationRequest request, string username)
+    {
+        if (!string.Equals(request.BuildingType, "LogCamp", StringComparison.OrdinalIgnoreCase))
+        {
+            throw new ArgumentException("Unsupported building type.", nameof(request.BuildingType));
+        }
+
+        var location = await GetAsync(request.Q, request.R);
+        if (location is null ||
+            !string.Equals(location.OwnerUsername, username, StringComparison.OrdinalIgnoreCase))
+        {
+            return null;
+        }
+
+        if (!string.IsNullOrWhiteSpace(location.BuildingType))
+        {
+            throw new InvalidOperationException("This location already has a building.");
+        }
+
+        if (!string.Equals(location.Terrain, "Forest", StringComparison.OrdinalIgnoreCase))
+        {
+            throw new InvalidOperationException("Log Camps can only be built on Forest territory.");
+        }
+
+        var now = DateTime.UtcNow;
+        var update = Builders<Location>.Update
+            .Set(x => x.BuildingType, "LogCamp")
+            .Set(x => x.BuildingBuiltAtUtc, now)
+            .Set(x => x.UpdatedAtUtc, now);
+
+        var updated = await _locations.FindOneAndUpdateAsync(
+            x => x.Id == location.Id && x.OwnerUsername == username && x.BuildingType == null,
+            update,
+            new FindOneAndUpdateOptions<Location>
+            {
+                ReturnDocument = ReturnDocument.After
+            });
+
+        if (updated is null)
+        {
+            throw new InvalidOperationException("This location already has a building.");
+        }
+
+        await _resources.AddWoodGenerationAsync(username, _logCampWoodPerMinute);
+        return updated;
+    }
+
     public async Task<Location?> GetHomeAsync(string username) =>
         await _locations.Find(x => x.OwnerUsername == username && x.Kind == "Home").FirstOrDefaultAsync();
 

microservices/LocationsApi/Services/ResourceService.cs

@@ -32,8 +32,10 @@ public class ResourceService
         var update = Builders<PlayerResources>.Update
             .SetOnInsert(x => x.Username, username)
             .SetOnInsert(x => x.Gold, _startingGold)
+            .SetOnInsert(x => x.Wood, 0)
             .SetOnInsert(x => x.CreatedAtUtc, now)
             .SetOnInsert(x => x.LastGoldGeneratedAtUtc, now)
+            .SetOnInsert(x => x.LastWoodGeneratedAtUtc, now)
             .Set(x => x.GoldPerMinute, _headquartersGoldPerMinute)
             .Set(x => x.UpdatedAtUtc, now);
 
@@ -78,29 +80,61 @@ public class ResourceService
         return updated is not null;
     }
 
+    public async Task AddWoodGenerationAsync(string username, int woodPerMinute)
+    {
+        if (woodPerMinute <= 0)
+        {
+            return;
+        }
+
+        var resources = await EnsureAsync(username);
+        var now = DateTime.UtcNow;
+
+        var update = Builders<PlayerResources>.Update
+            .Inc(x => x.WoodPerMinute, woodPerMinute)
+            .Set(x => x.UpdatedAtUtc, now);
+
+        if (resources.WoodPerMinute <= 0 || resources.LastWoodGeneratedAtUtc.Year < 2000)
+        {
+            update = update.Set(x => x.LastWoodGeneratedAtUtc, now);
+        }
+
+        await _resources.UpdateOneAsync(x => x.Username == username, update);
+    }
+
     private async Task<PlayerResources> ApplyGoldGenerationAsync(PlayerResources resources)
     {
-        if (resources.GoldPerMinute <= 0)
-        {
-            return resources;
-        }
-
         var now = DateTime.UtcNow;
-        var elapsed = now - resources.LastGoldGeneratedAtUtc;
+        var goldElapsedMinutes = resources.GoldPerMinute <= 0
-        var elapsedMinutes = (int)Math.Floor(elapsed.TotalMinutes);
+            ? 0
-        if (elapsedMinutes <= 0)
+            : (int)Math.Floor((now - resources.LastGoldGeneratedAtUtc).TotalMinutes);
+        var woodElapsedMinutes = resources.WoodPerMinute <= 0 || resources.LastWoodGeneratedAtUtc.Year < 2000
+            ? 0
+            : (int)Math.Floor((now - resources.LastWoodGeneratedAtUtc).TotalMinutes);
+
+        if (goldElapsedMinutes <= 0 && woodElapsedMinutes <= 0)
         {
             return resources;
         }
 
-        var generatedGold = elapsedMinutes * resources.GoldPerMinute;
-        var generationTimestamp = resources.LastGoldGeneratedAtUtc.AddMinutes(elapsedMinutes);
         var update = Builders<PlayerResources>.Update
-            .Inc(x => x.Gold, generatedGold)
             .Set(x => x.GoldPerMinute, _headquartersGoldPerMinute)
-            .Set(x => x.LastGoldGeneratedAtUtc, generationTimestamp)
             .Set(x => x.UpdatedAtUtc, now);
 
+        if (goldElapsedMinutes > 0)
+        {
+            update = update
+                .Inc(x => x.Gold, goldElapsedMinutes * resources.GoldPerMinute)
+                .Set(x => x.LastGoldGeneratedAtUtc, resources.LastGoldGeneratedAtUtc.AddMinutes(goldElapsedMinutes));
+        }
+
+        if (woodElapsedMinutes > 0)
+        {
+            update = update
+                .Inc(x => x.Wood, woodElapsedMinutes * resources.WoodPerMinute)
+                .Set(x => x.LastWoodGeneratedAtUtc, resources.LastWoodGeneratedAtUtc.AddMinutes(woodElapsedMinutes));
+        }
+
         return await _resources.FindOneAndUpdateAsync(
             x => x.Username == resources.Username,
             update,

microservices/LocationsApi/appsettings.json

@@ -27,5 +27,8 @@
     "ScoutGoldCost": 50,
     "ScoutTrainingSeconds": 60
   },
+  "Buildings": {
+    "LogCampWoodPerMinute": 5
+  },
   "AllowedHosts": "*"
 }

microservices/LocationsApi/k8s/configmap.yaml

@@ -15,3 +15,4 @@ data:
   Resources__HeadquartersGoldPerMinute: "10"
   Units__ScoutGoldCost: "50"
   Units__ScoutTrainingSeconds: "60"
+  Buildings__LogCampWoodPerMinute: "5"