fix(example): Smooth aiming input on FPS examples (#509)

Fixes #498

Author: elementbound

examples/multiplayer-fps/characters/player.tscn

@@ -143,6 +143,7 @@ properties = Array[String]([":transform", "Head:transform"])
 
 [node name="Input" type="Node" parent="." node_paths=PackedStringArray("big_gun", "hud")]
 script = ExtResource("10_50d5g")
+mouse_sensitivity = 0.005
 big_gun = NodePath("../Head/BigGun")
 hud = NodePath("../HUD")
 

examples/multiplayer-fps/scripts/player-input.gd

@@ -27,8 +27,8 @@ func _input(event: InputEvent) -> void:
 	if !is_multiplayer_authority(): return
 
 	if event is InputEventMouseMotion:
-		mouse_rotation.y = event.relative.x * mouse_sensitivity
-		mouse_rotation.x = event.relative.y * mouse_sensitivity
+		mouse_rotation.y += event.relative.x * mouse_sensitivity
+		mouse_rotation.x += event.relative.y * mouse_sensitivity
 
 	if event.is_action_pressed("escape"):
 		Input.set_mouse_mode(Input.MOUSE_MODE_VISIBLE)
@@ -51,7 +51,7 @@ func _gather():
 		look_angle = Vector2.ZERO
 		mouse_rotation = Vector2.ZERO
 	else:
-		look_angle = Vector2(-mouse_rotation.y * NetworkTime.ticktime, -mouse_rotation.x * NetworkTime.ticktime)
+		look_angle = Vector2(-mouse_rotation.y, -mouse_rotation.x)
 		mouse_rotation = Vector2.ZERO
 
 func setup():

examples/rollback-fps/characters/player.tscn

@@ -91,6 +91,7 @@ properties = Array[String]([":transform", "Head:transform"])
 
 [node name="Input" type="Node" parent="."]
 script = ExtResource("7_2i3bi")
+mouse_sensitivity = 0.005
 
 [node name="Hit SFX" type="AudioStreamPlayer3D" parent="."]
 stream = ExtResource("15_1n4tg")

examples/rollback-fps/scripts/player-input.gd

@@ -19,8 +19,8 @@ func _input(event: InputEvent) -> void:
 	if !is_multiplayer_authority(): return
 
 	if event is InputEventMouseMotion:
-		mouse_rotation.y = event.relative.x * mouse_sensitivity
-		mouse_rotation.x = event.relative.y * mouse_sensitivity
+		mouse_rotation.y += event.relative.x * mouse_sensitivity
+		mouse_rotation.x += event.relative.y * mouse_sensitivity
 
 	if event.is_action_pressed("escape"):
 		Input.set_mouse_mode(Input.MOUSE_MODE_VISIBLE)
@@ -44,5 +44,5 @@ func _gather():
 		look_angle = Vector2.ZERO
 		mouse_rotation = Vector2.ZERO
 	else:
-		look_angle = Vector2(-mouse_rotation.y * NetworkTime.ticktime, -mouse_rotation.x * NetworkTime.ticktime)
+		look_angle = Vector2(-mouse_rotation.y, -mouse_rotation.x)
 		mouse_rotation = Vector2.ZERO