Allow the benchmark time limit to be changed by individual benchmarks (#73)

benchmark.gd

@@ -1,8 +1,9 @@
 class_name Benchmark
 
+
+## Set default benchmark time limit to 5 seconds (5 million microseconds).
+var benchmark_time := 5e6
 var test_render_cpu : = false
 var test_render_gpu : = false
 var test_idle : = false
 var test_physics : = false
-
-

benchmarks/physics/area_2d.gd

@@ -68,6 +68,7 @@ class TestScene:
 
 
 func _init() -> void:
+	benchmark_time = 10e6
 	test_physics = true
 	test_idle = true
 

benchmarks/physics/character_body_2d.gd

@@ -58,6 +58,7 @@ class TestScene:
 
 
 func _init() -> void:
+	benchmark_time = 10e6
 	test_physics = true
 	test_idle = true
 

benchmarks/physics/rigid_body_2d.gd

@@ -14,6 +14,7 @@ func _init() -> void:
 	square_mesh.size = Vector2(20.0, 20.0);
 	circle_mesh.radius = 10.0;
 	circle_mesh.height = 20.0;
+	benchmark_time = 10e6
 	test_physics = true
 	test_idle = true
 

benchmarks/physics/rigid_body_3d.gd

@@ -11,6 +11,7 @@ var box_mesh := BoxMesh.new()
 var sphere_mesh := SphereMesh.new()
 
 func _init() -> void:
+	benchmark_time = 10e6
 	test_physics = true
 	test_idle = true
 

manager.gd

@@ -165,10 +165,10 @@ func run_test(test_id: TestID) -> void:
 		for i in 3:
 			await get_tree().process_frame
 
+		var time_limit: int = bench_script.get("benchmark_time")
 		begin_time = Time.get_ticks_usec()
 
-		# Time limit of 5 seconds (5 million microseconds).
-		while (Time.get_ticks_usec() - begin_time) < 5e6:
+		while (Time.get_ticks_usec() - begin_time) < time_limit:
 			await get_tree().process_frame
 
 			results.render_cpu += RenderingServer.viewport_get_measured_render_time_cpu(get_tree().root.get_viewport_rid())  + RenderingServer.get_frame_setup_time_cpu()