Add swipe input

GameBoard.gd

@@ -21,6 +21,12 @@ const RIGHT = RASTER_SIZE * 5
 
 
 func _ready():
+	# Swipe input
+	$SwipeHandler.connect("swipe_up", self, "rotate_shape")
+	$SwipeHandler.connect("swipe_left", self, "move_left")
+	$SwipeHandler.connect("swipe_right", self, "move_right")
+	$SwipeHandler.connect("swipe_down", self, "drop")
+	
 	$GravityTimer.connect("timeout", self, "update_board")
 	
 	active_shape = get_random_shape()

GameBoard.tscn

@@ -1,7 +1,8 @@
-[gd_scene load_steps=3 format=2]
+[gd_scene load_steps=4 format=2]
 
 [ext_resource path="res://background.png" type="Texture" id=1]
 [ext_resource path="res://GameBoard.gd" type="Script" id=2]
+[ext_resource path="res://SwipeHandler.gd" type="Script" id=3]
 
 [node name="GameBoard" type="Node2D"]
 script = ExtResource( 2 )
@@ -16,3 +17,6 @@ wait_time = 0.5
 autostart = true
 
 [node name="StaticBlocks" type="Node2D" parent="."]
+
+[node name="SwipeHandler" type="Node" parent="."]
+script = ExtResource( 3 )

SwipeHandler.gd

@@ -0,0 +1,42 @@
+extends Node
+
+
+signal swipe_left
+signal swipe_right
+signal swipe_up
+signal swipe_down
+
+var swipe_start: Vector2
+var swipe_done = false
+
+const MAX_SWIPE_DISTANCE = 80
+
+
+func _unhandled_input(event):
+	if event is InputEventScreenTouch:
+		if event.pressed:
+			swipe_done = false
+			swipe_start = event.get_position()
+		elif not swipe_done:
+			_interpret_swipe(event.get_position())
+	elif event is InputEventScreenDrag:
+		if not swipe_done:
+			_interpret_swipe(event.position)
+
+
+func _interpret_swipe(swipe_end: Vector2):
+	var diff = swipe_end - swipe_start
+	
+	if diff.length_squared() > MAX_SWIPE_DISTANCE * MAX_SWIPE_DISTANCE:
+		var normalized = diff.normalized()
+		
+		if normalized.x > 0.5:
+			emit_signal("swipe_right")
+		elif normalized.x < -0.5:
+			emit_signal("swipe_left")
+		elif normalized.y > 0.5:
+			emit_signal("swipe_down")
+		else:
+			emit_signal("swipe_up")
+		
+		swipe_done = true

project.godot

@@ -30,7 +30,9 @@ window/size/width=1080
 window/size/height=1920
 window/size/test_width=576
 window/size/test_height=1024
+window/handheld/orientation="portrait"
 window/stretch/mode="2d"
+window/stretch/aspect="expand"
 
 [input]
 
@@ -55,6 +57,10 @@ drop={
  ]
 }
 
+[input_devices]
+
+pointing/emulate_touch_from_mouse=true
+
 [physics]
 
 common/enable_pause_aware_picking=true