Fix locations on web build

The way we were loading location images worked locally but not in the web
build. This approach works, though it requires to have the locations listed
in the GameMap configuration. The integration test has been updated to
check whether the number of pngs in the locations folder matches the
registered locations in the GameMap in hopes that this prevents errors
later.

project/locations/game_map.gd

@@ -1,10 +1,22 @@
 ## Holds all the available locations
 class_name GameMap extends RefCounted
 
+const _RESOURCE_PATHS : Array[String] = [
+	"res://locations/classroom.png",
+	"res://locations/hallway.png",
+]
+
 ## Maps location names to their textures.
 ## The keys are plain location names, like "hallway".
 var _dictionary := {}
 
+func _init():
+	for resource_path in _RESOURCE_PATHS:
+		var file_name := resource_path.substr(resource_path.rfind("/")+1)
+		var key := file_name.substr(0, file_name.rfind("."))
+		_dictionary[key] = load(resource_path)
+
+
 func get_by_name(name:String)->Texture:
 	return _dictionary[name]
 
@@ -13,16 +25,6 @@ func has_location(name:String)->bool:
 	return _dictionary.keys().has(name)
 
 
-## Load all of the png images in the given folder as locations
-func load(path:String)->void:
-	for file_name in DirAccess.get_files_at(path):
-		if file_name.ends_with(".png"):
-			var resource_path := path + file_name
-			var texture := load(resource_path)
-			var key := file_name.substr(0, file_name.find(".png"))
-			_dictionary[key] = texture
-
-
 func pick_random() -> Texture:
 	return _dictionary.values().pick_random()
 

project/test/integration/game_map_test.gd

@@ -1,10 +1,14 @@
 extends GutTest
 
-func test_load() -> void:
+const LOCATIONS_PATH := "res://locations/"
+
+func test_load__all_files_in_folder_are_locations() -> void:
 	var map := GameMap.new()
-	map.load("res://test/integration/test_locations/")
 
-	assert_eq(map.size(), 1, "One location should be loaded from the test locations.")
-	assert_true(map.has_location("test_location"), "The map should have loaded the test location")
-	assert_not_null(map.get_by_name("test_location"), "The location texture can be loaded by name")
+	var files_in_directory := 0
+	for file_name in DirAccess.get_files_at(LOCATIONS_PATH):
+		if file_name.ends_with(".png"):
+			files_in_directory += 1
+
+	assert_eq(map.size(), files_in_directory, "Number of locations matches number of .png images in %s" % LOCATIONS_PATH)
 

project/test/integration/simple_story_validity_test.gd

@@ -156,8 +156,7 @@ func test_all_story_options_end_story_exists():
 
 
 func test_locations():
-	var game_map := GameMap.new()
-	game_map.load("res://locations/")
+	var game_map :GameMap = autofree(GameMap.new())
 	for story_path in story_paths:
 		var story := _load_simple_story(story_path)
 		if "location" in story:

project/ui/main_scene.gd

@@ -35,7 +35,6 @@ func _ready():
 	# Initialize the world
 	world = World.new()
 	world.cast.load_cast(_CAST_PATH)
-	world.game_map.load(_LOCATIONS_PATH)
 	_game_screen.world = world
 
 	## Load all the stories in _STARTING_STORY_PATH