feat: aircraft dropping boxes

Author: lbovet

Aircraft.gd

@@ -0,0 +1,49 @@
+extends Area2D
+	
+export (PackedScene) var Box
+	
+var speed = 400
+
+var obstacles = 0
+var dropAllowed = false
+var dropped = false
+
+func _ready():
+	$DropTimer.start(0.9 + (0.2 - randf()*0.4))
+
+func _physics_process(delta):
+	position += -transform.y * speed * delta
+	if not dropped and dropAllowed and obstacles == 0:
+		drop()
+	
+func _on_VisibilityNotifier2D_screen_exited():
+	queue_free()
+	
+func drop():	
+	var box = Box.instance()
+	box.global_position = global_position
+	box.apply_central_impulse(-transform.y * 500)
+	box.rotation = rotation + rand_range(-PI / 2, PI / 2)
+	var rnd = randf()
+	if rnd < 0.5:
+		box.setContent(1)
+	elif rnd < 0.9: 		
+		box.setContent(2)
+	else:
+		box.setContent(3)		
+	box.z_index = z_index - 1
+	box.collision_layer = 128
+	box.collision_mask = 128
+	box.set_angular_velocity(5)
+	get_parent().add_child(box)
+	box.setScale(Vector2(1.5, 1.5))
+	dropped = true
+
+func _on_DropTimer_timeout():
+	dropAllowed = true
+
+func _on_Aircraft_body_entered(body):
+	obstacles += 1
+
+func _on_Aircraft_body_exited(body):
+	obstacles -= 1

Aircraft.tscn

@@ -0,0 +1,29 @@
+[gd_scene load_steps=5 format=2]
+
+[ext_resource path="res://images/plane.png" type="Texture" id=1]
+[ext_resource path="res://Aircraft.gd" type="Script" id=2]
+[ext_resource path="res://Box.tscn" type="PackedScene" id=3]
+
+[sub_resource type="RectangleShape2D" id=1]
+extents = Vector2( 15.8861, 14.1277 )
+
+[node name="Aircraft" type="Area2D"]
+z_index = 10
+script = ExtResource( 2 )
+Box = ExtResource( 3 )
+
+[node name="Sprite" type="Sprite" parent="."]
+scale = Vector2( 0.063, 0.063 )
+texture = ExtResource( 1 )
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="."]
+position = Vector2( -0.374573, -82.9523 )
+scale = Vector2( 2.04304, 1.96886 )
+shape = SubResource( 1 )
+
+[node name="DropTimer" type="Timer" parent="."]
+one_shot = true
+
+[connection signal="body_entered" from="." to="." method="_on_Aircraft_body_entered"]
+[connection signal="body_exited" from="." to="." method="_on_Aircraft_body_exited"]
+[connection signal="timeout" from="DropTimer" to="." method="_on_DropTimer_timeout"]

Barrel.gd

@@ -0,0 +1,6 @@
+extends RigidBody2D
+
+
+func _on_PickArea_body_entered(body):
+	if body.is_in_group("tank") and body.life > 0:
+		queue_free()

Barrel.tscn

@@ -0,0 +1,30 @@
+[gd_scene load_steps=5 format=2]
+
+[ext_resource path="res://images/nitro.png" type="Texture" id=1]
+[ext_resource path="res://Barrel.gd" type="Script" id=2]
+
+[sub_resource type="RectangleShape2D" id=1]
+extents = Vector2( 2.76727, 4.33193 )
+
+[sub_resource type="CapsuleShape2D" id=2]
+radius = 8.06976
+height = 33.491
+
+[node name="Barrel" type="RigidBody2D"]
+script = ExtResource( 2 )
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="."]
+scale = Vector2( 3.12, 2.6 )
+shape = SubResource( 1 )
+
+[node name="Sprite" type="Sprite" parent="."]
+scale = Vector2( 0.063, 0.063 )
+texture = ExtResource( 1 )
+
+[node name="PickArea" type="Area2D" parent="."]
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="PickArea"]
+scale = Vector2( 2.06014, -0.801646 )
+shape = SubResource( 2 )
+
+[connection signal="body_entered" from="PickArea" to="." method="_on_PickArea_body_entered"]

Box.gd

@@ -0,0 +1,78 @@
+extends RigidBody2D
+
+export (PackedScene) var Shell
+
+enum Content { SHELL=0, SMALL_SHELLS=1, BIG_SHELL=2, SPRING=3 }
+
+var content = null
+var targetScale = Vector2(1, 1)
+var scaleDelta = Vector2(0.4, 0.4)
+var blinks = 5
+var shells = 0
+var life = 8
+
+func _ready():
+	content = $Sprite/Content.frame
+
+func setScale(scale):
+	self.scale = scale
+	scaleDelta = scale - targetScale
+
+func _physics_process(delta):	
+	if scale.length() > 1:
+		var ratio = $FallTimer.time_left / $FallTimer.wait_time			
+		scale = targetScale + ratio * scaleDelta
+
+func setContent(content):
+	$Sprite/Content.frame = content
+	self.content = content
+
+func hit(damage, source):
+	life -= damage
+	if life < 0:
+		if content != Content.SPRING:
+			fire(source)
+		queue_free()
+		
+func fire(source, angle=0):	
+	var s = Shell.instance()
+	if content == Content.BIG_SHELL:
+		s.setBig()
+	elif content == Content.SMALL_SHELLS:
+		s.setSmall()	
+		if angle == 0:	
+			fire(source, randf() * PI + PI / 3)
+			fire(source, -randf() * PI + PI / 3)	
+	s.transform = transform
+	s.rotate(angle)
+	get_parent().add_child(s)
+	s.setSource(source)
+
+func _on_PickArea_body_entered(body):
+	if body.is_in_group("tank") and body.life > 0:
+		collision_layer = 256
+		collision_mask = 256
+		$PickTimer.start()
+		z_index = 0
+		if content == Content.SPRING:
+			body.addSpring()
+		if content == Content.SHELL:
+			body.addPoints(shells)
+		if content == Content.BIG_SHELL:
+			body.addBigShell()
+		if content == Content.SMALL_SHELLS:
+			body.addSmallShells()
+			
+func _on_FallTimer_timeout():
+	z_index = 1
+	collision_layer = 1
+	set_angular_velocity(0)
+
+func _on_PickTimer_timeout():
+	if blinks % 2:
+		modulate.a = 0
+	else:
+		modulate.a = 1
+	blinks -= 1
+	if blinks == 0:
+		queue_free()

Box.tscn

@@ -0,0 +1,63 @@
+[gd_scene load_steps=10 format=2]
+
+[ext_resource path="res://images/box.png" type="Texture" id=1]
+[ext_resource path="res://images/shell.png" type="Texture" id=2]
+[ext_resource path="res://images/small-shells.png" type="Texture" id=3]
+[ext_resource path="res://images/spring.png" type="Texture" id=4]
+[ext_resource path="res://images/big-shell.png" type="Texture" id=5]
+[ext_resource path="res://Box.gd" type="Script" id=6]
+[ext_resource path="res://Shell.tscn" type="PackedScene" id=7]
+
+[sub_resource type="SpriteFrames" id=1]
+animations = [ {
+"frames": [ ExtResource( 2 ), ExtResource( 3 ), ExtResource( 5 ), ExtResource( 4 ) ],
+"loop": true,
+"name": "default",
+"speed": 5.0
+} ]
+
+[sub_resource type="CapsuleShape2D" id=3]
+radius = 10.7314
+height = 44.8859
+
+[node name="Box" type="RigidBody2D" groups=[
+"heavy",
+"target",
+]]
+z_index = 1
+z_as_relative = false
+script = ExtResource( 6 )
+Shell = ExtResource( 7 )
+
+[node name="CollisionPolygon2D" type="CollisionPolygon2D" parent="."]
+position = Vector2( 0, -2 )
+scale = Vector2( 0.063, 0.063 )
+polygon = PoolVector2Array( -203.652, -271.332, -96.4444, -272.383, -96.4261, -311.874, 95.2381, -312.128, 95.2381, -273.189, 203.106, -273.434, 203.398, 270.991, 95.1389, 272.042, 94.5607, 310.2, -94.2023, 309.61, -95.0871, 271.858, -203.036, 271.858 )
+
+[node name="Sprite" type="Sprite" parent="."]
+scale = Vector2( 0.063, 0.063 )
+texture = ExtResource( 1 )
+
+[node name="Content" type="AnimatedSprite" parent="Sprite"]
+modulate = Color( 0.776471, 0.776471, 0.776471, 1 )
+position = Vector2( 0, -7 )
+rotation = 0.207694
+frames = SubResource( 1 )
+
+[node name="PickArea" type="Area2D" parent="."]
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="PickArea"]
+scale = Vector2( 2.06014, -0.801646 )
+shape = SubResource( 3 )
+
+[node name="FallTimer" type="Timer" parent="."]
+wait_time = 0.6
+one_shot = true
+autostart = true
+
+[node name="PickTimer" type="Timer" parent="."]
+wait_time = 0.06
+
+[connection signal="body_entered" from="PickArea" to="." method="_on_PickArea_body_entered"]
+[connection signal="timeout" from="FallTimer" to="." method="_on_FallTimer_timeout"]
+[connection signal="timeout" from="PickTimer" to="." method="_on_PickTimer_timeout"]

Bush.tscn

@@ -50,6 +50,8 @@ radius = 19.2516
 [node name="Bush" type="Area2D" groups=[
 "target",
 ]]
+z_index = 4
+z_as_relative = false
 script = ExtResource( 2 )
 
 [node name="Sprite" type="AnimatedSprite" parent="."]
@@ -60,6 +62,7 @@ frames = SubResource( 1 )
 shape = SubResource( 2 )
 
 [node name="Particles2D" type="Particles2D" parent="."]
+z_as_relative = false
 emitting = false
 amount = 40
 lifetime = 4.3

Controls.gd

@@ -4,7 +4,6 @@ extends Node2D
 export (int) var player
 
 func _ready():
-	print("p"+str(player)+"_left")
 	$Left/TouchScreenButton.action = "p"+str(player)+"_left"
 	$Button/TouchScreenButton.action = "p"+str(player)+"_button"
 	$Right/TouchScreenButton.action = "p"+str(player)+"_right"

Field.gd

@@ -1,5 +1,7 @@
 extends Area2D
 
+export (PackedScene) var Aircraft
+
 signal tank_removed(tank)
 signal game_over
 
@@ -11,10 +13,10 @@ func _ready():
 var winner = null
 
 func update():
-	print("updating ", len(candidates))
 	if len(candidates) < 2:
 		if len(candidates) == 1:
 			winner = candidates[0]
+		$Airfcrafts.stop()
 		emit_signal("game_over")
 	else:
 		var zeroes=0
@@ -28,6 +30,7 @@ func update():
 				maybeWinner = c
 		if zeroes > len(candidates) -1:
 			winner = maybeWinner
+			$Airfcrafts.stop()
 			emit_signal("game_over")
 
 func _on_Tank1_dead():
@@ -53,3 +56,29 @@ func _on_Tank3_dead():
 
 func _on_Tank3_zero():
 	update()
+	
+func spawnAircraft():
+	var spawn_location
+	if randf() > 0.5:
+		
+		spawn_location = $Airfcrafts/UpperAircraftSpawner/PathFollow2D
+	else:
+		spawn_location = $Airfcrafts/LowerAircraftSpawner/PathFollow2D
+		
+	spawn_location.offset = randi()
+
+	var aircraft = Aircraft.instance()
+	add_child(aircraft)
+
+	# Set the direction perpendicular to the path direction.
+	var direction = spawn_location.rotation + PI
+
+	# Set the position to a random location.
+	aircraft.position = spawn_location.position
+
+	# Add some randomness to the direction.
+	direction += rand_range(-PI / 8, PI / 8)
+	aircraft.rotation = direction
+
+func _on_Airfcrafts_timeout():
+	spawnAircraft()