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# Hurry Curry! - a game about cooking
# Copyright 2024 tpart
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, version 3 of the License only.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
#
class_name VirtualJoystick
extends Control
@export var pressed_color := Color.GRAY
@export_range(0, 200, 1) var deadzone_size : float = 10
@export_range(0, 500, 1) var clampzone_size : float = 75
enum Joystick_mode {
FIXED,
DYNAMIC,
FOLLOWING
}
@export var joystick_mode := Joystick_mode.FIXED
enum Visibility_mode {
ALWAYS,
TOUCHSCREEN_ONLY,
WHEN_TOUCHED
}
@export var visibility_mode := Visibility_mode.ALWAYS
@export var use_input_actions := true
@export var action_left := "left"
@export var action_right := "right"
@export var action_up := "forwards"
@export var action_down := "backwards"
var is_pressed := false
var output := Vector2.ZERO
var _touch_index : int = -1
@onready var _base := $Base
@onready var _tip := $Base/Tip
@onready var _base_default_position : Vector2 = _base.position
@onready var _tip_default_position : Vector2 = _tip.position
@onready var _default_color : Color = _tip.modulate
func _ready() -> void:
if not DisplayServer.is_touchscreen_available() and visibility_mode == Visibility_mode.TOUCHSCREEN_ONLY :
hide()
if visibility_mode == Visibility_mode.WHEN_TOUCHED:
hide()
func _input(event: InputEvent) -> void:
if event is InputEventScreenTouch:
if event.pressed:
if _is_point_inside_joystick_area(event.position) and _touch_index == -1:
if joystick_mode == Joystick_mode.DYNAMIC or joystick_mode == Joystick_mode.FOLLOWING or (joystick_mode == Joystick_mode.FIXED and _is_point_inside_base(event.position)):
if joystick_mode == Joystick_mode.DYNAMIC or joystick_mode == Joystick_mode.FOLLOWING:
_move_base(event.position)
if visibility_mode == Visibility_mode.WHEN_TOUCHED:
show()
_touch_index = event.index
_tip.modulate = pressed_color
_update_joystick(event.position)
get_viewport().set_input_as_handled()
elif event.index == _touch_index:
_reset()
if visibility_mode == Visibility_mode.WHEN_TOUCHED:
hide()
get_viewport().set_input_as_handled()
elif event is InputEventScreenDrag:
if event.index == _touch_index:
_update_joystick(event.position)
get_viewport().set_input_as_handled()
func _move_base(new_position: Vector2) -> void:
_base.global_position = new_position - _base.pivot_offset * get_global_transform_with_canvas().get_scale()
func _move_tip(new_position: Vector2) -> void:
_tip.global_position = new_position - _tip.pivot_offset * _base.get_global_transform_with_canvas().get_scale()
func _is_point_inside_joystick_area(point: Vector2) -> bool:
var x: bool = point.x >= global_position.x and point.x <= global_position.x + (size.x * get_global_transform_with_canvas().get_scale().x)
var y: bool = point.y >= global_position.y and point.y <= global_position.y + (size.y * get_global_transform_with_canvas().get_scale().y)
return x and y
func _get_base_radius() -> Vector2:
return _base.size * _base.get_global_transform_with_canvas().get_scale() / 2
func _is_point_inside_base(point: Vector2) -> bool:
var _base_radius = _get_base_radius()
var center : Vector2 = _base.global_position + _base_radius
var vector : Vector2 = point - center
if vector.length_squared() <= _base_radius.x * _base_radius.x:
return true
else:
return false
func _update_joystick(touch_position: Vector2) -> void:
var _base_radius = _get_base_radius()
var center : Vector2 = _base.global_position + _base_radius
var vector : Vector2 = touch_position - center
vector = vector.limit_length(clampzone_size)
if joystick_mode == Joystick_mode.FOLLOWING and touch_position.distance_to(center) > clampzone_size:
_move_base(touch_position - vector)
_move_tip(center + vector)
if vector.length_squared() > deadzone_size * deadzone_size:
is_pressed = true
output = (vector - (vector.normalized() * deadzone_size)) / (clampzone_size - deadzone_size)
else:
is_pressed = false
output = Vector2.ZERO
if use_input_actions:
if output.x > 0:
Input.action_release(action_left)
Input.action_press(action_right, output.x)
else:
Input.action_release(action_right)
Input.action_press(action_left, -output.x)
if output.y > 0:
Input.action_release(action_up)
Input.action_press(action_down, output.y)
else:
Input.action_release(action_down)
Input.action_press(action_up, -output.y)
func _reset():
is_pressed = false
output = Vector2.ZERO
_touch_index = -1
_tip.modulate = _default_color
_base.position = _base_default_position
_tip.position = _tip_default_position
if use_input_actions:
for action in [action_left, action_right, action_down, action_up]:
Input.action_release(action)
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