Add default light profile for PortMaster

main/runtime_performance_profile.gd

@@ -0,0 +1,50 @@
+class_name RuntimePerformanceProfile
+extends RefCounted
+
+const PROFILE_ENVIRONMENT_VARIABLE: String = (
+	"NETFISHING_PERFORMANCE_PROFILE"
+)
+const LEGACY_LIGHT_ENVIRONMENT_VARIABLE: String = "NETFISHING_LOW_END"
+const NORMAL_PROFILE: StringName = &"normal"
+const LIGHT_PROFILE: StringName = &"light"
+const NORMAL_WORLD_RENDER_SCALE: float = 1.0
+const LIGHT_WORLD_RENDER_SCALE: float = 0.5
+
+var _profile_name: StringName = NORMAL_PROFILE
+
+
+static func from_environment() -> RuntimePerformanceProfile:
+	return from_name(
+		StringName(OS.get_environment(PROFILE_ENVIRONMENT_VARIABLE)),
+		OS.get_environment(LEGACY_LIGHT_ENVIRONMENT_VARIABLE) == "1",
+	)
+
+
+static func from_name(
+	profile_name: StringName,
+	legacy_light_requested: bool = false,
+) -> RuntimePerformanceProfile:
+	var profile := RuntimePerformanceProfile.new()
+	if profile_name == LIGHT_PROFILE or (
+		profile_name.is_empty() and legacy_light_requested
+	):
+		profile._profile_name = LIGHT_PROFILE
+	else:
+		profile._profile_name = NORMAL_PROFILE
+	return profile
+
+
+func get_profile_name() -> StringName:
+	return _profile_name
+
+
+func is_light() -> bool:
+	return _profile_name == LIGHT_PROFILE
+
+
+func get_world_render_scale() -> float:
+	return (
+		LIGHT_WORLD_RENDER_SCALE
+		if is_light()
+		else NORMAL_WORLD_RENDER_SCALE
+	)