First version

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2020 Oğuzhan Eroğlu <[email protected]>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE. 

README.md

@@ -0,0 +1,46 @@
+ # virtual-joystick
+Virtual joystick plugin for Godot Engine.
+
+![Godot Virtual Joystick](ss.png)
+
+## Installation
+### GIT
+You can install the plugin with GIT.
+
+```bash
+cd /path/to/project
+mkdir -p addons
+cd addons
+git clone https://github.com/rohanrhu/virtual-joystick
+```
+
+## Usage
+### Add a `Virtualjoystick` node.
+### Add a `CollisionShape2D` and set a `CircleShape2D` to that.
+### Set container and button textures
+![Texture Settings](texture-settings.png)
+
+## Events
+### `controlling`
+Fires during user control.
+
+### `trimming`
+Fires while button is trimming to container's border.
+
+### `released`
+Fires when user released the joystick.
+
+## Properties
+### `container_texture: Texture`
+### `button_texture: Texture`
+### `is_mouseover: bool`
+### `is_dragging: bool`
+### `is_trimming: bool`
+### `angle: float`
+### `velocity: Vector2`
+
+## Notices
+* While you are testing it on mouse, you may want to enable `Project Settings > General > Input Devices > Pointing > Emulate Touch From Mouse` setting.
+
+ ## License
+MIT

VirtualJoystick.gd

@@ -0,0 +1,122 @@
+# Virtual Joystick plugin for Godot Engine
+#
+# https://github.com/rohanrhu/virtual-joystick
+#
+# Licensed under MIT
+# Copyright (C) 2020, Oğuzhan Eroğlu (https://oguzhaneroglu.com/) <[email protected]>
+
+extends Area2D
+
+export(Texture) var container_texture
+export(Texture) var button_texture
+
+onready var shape = $CollisionShape2D
+onready var container
+onready var button
+
+var is_mouseover = false
+var is_dragging = false
+var is_trimming = false
+var angle = 0.0
+var velocity = Vector2.ZERO
+var current_event = false
+
+signal controlling
+signal trimming
+signal released
+
+func _ready():
+    connect("mouse_entered", self, "_on_mouse_entered")
+    connect("mouse_exited", self, "_on_mouse_exited")
+
+    container = Sprite.new()
+    button = Sprite.new()
+
+    add_child(container)
+    add_child(button)
+
+    container.texture = container_texture
+    button.texture = button_texture
+
+    container.global_position = global_position
+    button.global_position = container.global_position
+
+func _process(delta):
+    pass
+
+func _input(event):
+    if not (event is InputEventScreenDrag) and not (event is InputEventScreenTouch):
+        return
+
+    if current_event is InputEvent and current_event.index == event.index:
+        current_event = event
+    else:
+        return
+
+    if not is_mouseover:
+        if event is InputEventScreenTouch:
+            if not event.pressed:
+                is_dragging = false
+                is_trimming = false
+                button.global_position = container.global_position
+                velocity = Vector2.ZERO
+
+                emit_signal("released")
+
+    _process_button()
+
+func _input_event(viewport, event, shape_idx):
+    if not (event is InputEventScreenDrag) and not (event is InputEventScreenTouch):
+        return
+
+    current_event = event
+
+    if event is InputEventScreenTouch:
+        is_dragging = event.pressed
+        if not is_dragging:
+            is_trimming = false
+            button.global_position = container.global_position
+            velocity = Vector2.ZERO
+            angle = 0.0
+
+            emit_signal("released")
+
+    _process_button()
+
+func _process_button():
+    if is_dragging:
+        button.global_position = current_event.position
+
+        var da = abs(button.global_position.x - container.global_position.x)
+        var db = abs(button.global_position.y - container.global_position.y)
+        var dh = sqrt(pow(da, 2) + pow(db, 2));
+
+        var a = button.global_position.x - container.global_position.x
+        var b = button.global_position.y - container.global_position.y
+        var h = sqrt(pow(a, 2) + pow(b, 2));
+        angle = atan2(a, b)
+
+        is_trimming = dh > shape.shape.radius
+
+        if is_trimming:
+            var x = container.global_position.x + sin(angle) * shape.shape.radius
+            var y = container.global_position.y + cos(angle) * shape.shape.radius
+
+            button.global_position.x = x
+            button.global_position.y = y
+
+        var v = Vector2(sin(angle), cos(angle))
+        var is_changed = velocity != v
+        velocity = v
+
+        if is_changed:
+            emit_signal("controlling")
+
+        if is_trimming:
+            emit_signal("trimming")
+
+func _on_mouse_entered():
+    is_mouseover = true
+
+func _on_mouse_exited():
+    is_mouseover = false

VirtualJoystickPlugin.gd

@@ -0,0 +1,16 @@
+# Virtual Joystick plugin for Godot Engine
+#
+# https://github.com/rohanrhu/virtual-joystick
+#
+# Licensed under MIT
+# Copyright (C) 2020, Oğuzhan Eroğlu (https://oguzhaneroglu.com/) <[email protected]>
+
+tool
+
+extends EditorPlugin
+
+func _enter_tree():
+    add_custom_type("VirtualJoystick", "Area2D", preload("VirtualJoystick.gd"), preload("icon.png"))
+
+func _exit_tree():
+    remove_custom_type("Joystick")

plugin.cfg

@@ -0,0 +1,7 @@
+[plugin]
+
+name="VirtualJoystick"
+description="Virtual joystick for Godot."
+author="Oğuzhan Eroğlu"
+version="1.0"
+script="VirtualJoystickPlugin.gd"