ADD: player can jump.

src/Actor/Jump.gd

@@ -0,0 +1,39 @@
+extends Node
+
+var this = null
+var state_name = 'Jump'
+var m_ratio = 0.0
+var m_jump_state = null
+var m_speed = 0.7
+
+func _ready():
+	pass
+
+func _state_process(delta):
+	if m_jump_state != null:
+		m_jump_state.call(delta)
+	else:
+		m_ratio = 0.25
+		m_jump_state = self.go_up
+
+func go_up(delta):
+	var sprite = this.get_node('Sprite2D')
+	m_ratio += m_speed * delta
+	sprite.scale.x = m_ratio
+	sprite.scale.y = m_ratio
+	
+	if m_ratio >= 0.38:
+		m_jump_state = self.go_down
+		
+func go_down(delta):
+	var sprite = this.get_node('Sprite2D')
+	m_ratio -= m_speed * delta
+	sprite.scale.x = m_ratio
+	sprite.scale.y = m_ratio
+	
+	if m_ratio <= 0.25:
+		this.to_normal()
+		queue_free()
+		
+	
+	

src/Actor/actor.gd

@@ -3,7 +3,7 @@ extends CharacterBody2D
 var m_dir = Vector2(0, 0)
 var m_speed = 256
 var m_state = null
- 
+
 func _ready():
 	self.to_normal()
 
@@ -31,3 +31,10 @@ func is_dead():
 func to_dead():
 	m_state = preload("res://Actor/Dead.gd").new()
 	m_state.this = self
+	
+func is_jump():
+	return m_state.state_name == 'Jump'
+	
+func to_jump():
+	m_state = preload("res://Actor/Jump.gd").new()
+	m_state.this = self

src/Actor/actor.tscn

@@ -4,7 +4,7 @@
 [ext_resource type="Texture2D" uid="uid://blr8qcmuqs5vl" path="res://icon.svg" id="2_itibm"]
 
 [sub_resource type="CircleShape2D" id="CircleShape2D_e2sef"]
-radius = 6.0
+radius = 3.16228
 
 [node name="Actor" type="CharacterBody2D" groups=["actors"]]
 script = ExtResource("1_0612w")

src/Player/player.gd

@@ -7,6 +7,9 @@ var m_shoot_timer = 0.0
 func _physics_process(dt):
 	var delta = Vector2(0, 0)
 	
+	if Input.is_action_just_pressed("player_jump") and $Actor.is_normal():
+		$Actor.to_jump()
+		
 	if Input.is_action_just_pressed("player_shoot") \
 	and m_shoot_timer >= m_shoot_time \
 	and not $Actor.is_dead():
@@ -32,7 +35,7 @@ func _physics_process(dt):
 		delta = delta.normalized()
 		$Actor.m_dir = delta
 	
-	if $Actor.is_normal():
+	if $Actor.is_normal() or $Actor.is_jump():
 		$Actor.velocity = delta * $Actor.m_speed
 		
 		$Actor.move_and_slide()

src/project.godot

@@ -42,6 +42,11 @@ player_shoot={
 "events": [Object(InputEventMouseButton,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"button_mask":0,"position":Vector2(0, 0),"global_position":Vector2(0, 0),"factor":1.0,"button_index":1,"canceled":false,"pressed":false,"double_click":false,"script":null)
 ]
 }
+player_jump={
+"deadzone": 0.5,
+"events": [Object(InputEventKey,"resource_local_to_scene":false,"resource_name":"","device":-1,"window_id":0,"alt_pressed":false,"shift_pressed":false,"ctrl_pressed":false,"meta_pressed":false,"pressed":false,"keycode":0,"physical_keycode":32,"key_label":0,"unicode":32,"echo":false,"script":null)
+]
+}
 
 [rendering]