gd,refacto: added state chart addon and namespace cleanup
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extends CharacterBody2D
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const SPEED:float = 50.0
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@onready var _sprite: Sprite2D = $Sprite
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@onready var _animation_player:AnimationPlayer = $AnimationPlayer
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var _direction:Vector2
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# When we enter walk state ...
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func _on_walk_state_entered():
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# pick a random direction to walk in (360 degrees)
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_direction = Vector2(randf() * 2 - 1, randf() * 2 - 1).normalized()
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# and play the walk animation
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_animation_player.play("walk")
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# flip the sprite. since we keep this direction for as long as
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# we are in the walk state, we don't need to do this per frame.
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_sprite.flip_h = _direction.x < 0
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# While we are in walk state...
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func _on_walk_state_physics_processing(_delta):
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# set a new velocity
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velocity = _direction * SPEED
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# and move into the given direction
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move_and_slide()
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# and update scale
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rescale()
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# When we enter idle state ...
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func _on_idle_state_entered():
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# clear the direction
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_direction = Vector2.ZERO
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# and play the idle animation
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_animation_player.play("idle")
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# also rescale here in case we entered idle state first
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rescale()
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func rescale():
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# scale the frog depending on its y position to achieve some pseudo-3d effect
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# this is hard-coded for resolution of this project which has 480 vertical pixels
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# so we assume 240 to be 100% size, 0 would be 50% size and 480 would be 150% size.
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var scale_factor = 1.0 + ((global_position.y - 240) / 480)
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scale = Vector2(scale_factor, scale_factor)
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@ -0,0 +1 @@
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uid://dg7apxhe32cgj
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@ -0,0 +1,211 @@
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[gd_scene load_steps=19 format=3 uid="uid://nji5r3vfeuwg"]
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[ext_resource type="Script" path="res://godot_state_charts_examples/random_transitions/wandering_frog/wandering_frog.gd" id="1_tfcjx"]
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[ext_resource type="Texture2D" uid="uid://bgswg1pgd01d1" path="res://godot_state_charts_examples/platformer/ninja_frog/full.png" id="2_hm4wf"]
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[ext_resource type="Script" path="res://addons/godot_state_charts/state_chart.gd" id="3_2vqqk"]
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[ext_resource type="Script" path="res://addons/godot_state_charts/compound_state.gd" id="4_44md5"]
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[ext_resource type="Script" path="res://addons/godot_state_charts/atomic_state.gd" id="5_j65h7"]
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[ext_resource type="Script" path="res://addons/godot_state_charts/transition.gd" id="6_s6am2"]
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[ext_resource type="Script" path="res://addons/godot_state_charts/expression_guard.gd" id="7_f5w5i"]
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[sub_resource type="Shader" id="Shader_pnpgx"]
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code = "shader_type canvas_item;
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void fragment() {
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COLOR.rgb = vec3(0);
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COLOR.a = 0.5 * 1.0-smoothstep(0.0, 1.0, distance(UV, vec2(0.5)));
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}
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"
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[sub_resource type="ShaderMaterial" id="ShaderMaterial_fnfpn"]
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shader = SubResource("Shader_pnpgx")
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[sub_resource type="CapsuleShape2D" id="CapsuleShape2D_1ethx"]
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radius = 12.0
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[sub_resource type="Animation" id="Animation_uq0h4"]
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length = 0.001
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tracks/0/type = "value"
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tracks/0/imported = false
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tracks/0/enabled = true
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tracks/0/path = NodePath("Sprite:frame")
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tracks/0/interp = 0
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tracks/0/loop_wrap = true
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tracks/0/keys = {
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"times": PackedFloat32Array(0),
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"transitions": PackedFloat32Array(1),
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"update": 0,
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"values": [0]
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}
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[sub_resource type="Animation" id="Animation_10ku2"]
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resource_name = "double_jump"
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length = 0.4
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step = 0.05
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tracks/0/type = "value"
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tracks/0/imported = false
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tracks/0/enabled = true
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tracks/0/path = NodePath("Sprite:frame")
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tracks/0/interp = 1
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tracks/0/loop_wrap = true
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tracks/0/keys = {
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"times": PackedFloat32Array(0, 0.4),
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"transitions": PackedFloat32Array(1, 1),
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"update": 0,
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"values": [23, 28]
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}
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[sub_resource type="Animation" id="Animation_ibg22"]
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resource_name = "fall"
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length = 0.1
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loop_mode = 1
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tracks/0/type = "value"
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tracks/0/imported = false
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tracks/0/enabled = true
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tracks/0/path = NodePath("Sprite:frame")
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tracks/0/interp = 1
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tracks/0/loop_wrap = true
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tracks/0/keys = {
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"times": PackedFloat32Array(0),
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"transitions": PackedFloat32Array(1),
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"update": 0,
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"values": [29]
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}
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[sub_resource type="Animation" id="Animation_5rh2e"]
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resource_name = "idle"
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loop_mode = 1
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tracks/0/type = "value"
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tracks/0/imported = false
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tracks/0/enabled = true
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tracks/0/path = NodePath("Sprite:frame")
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tracks/0/interp = 1
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tracks/0/loop_wrap = true
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tracks/0/keys = {
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"times": PackedFloat32Array(0, 1),
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"transitions": PackedFloat32Array(1, 1),
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"update": 0,
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"values": [12, 22]
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}
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[sub_resource type="Animation" id="Animation_jaga7"]
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resource_name = "jump"
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length = 0.1
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loop_mode = 1
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tracks/0/type = "value"
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tracks/0/imported = false
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tracks/0/enabled = true
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tracks/0/path = NodePath("Sprite:frame")
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tracks/0/interp = 1
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tracks/0/loop_wrap = true
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tracks/0/keys = {
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"times": PackedFloat32Array(0),
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"transitions": PackedFloat32Array(1),
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"update": 0,
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"values": [30]
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}
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[sub_resource type="Animation" id="Animation_6odvc"]
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resource_name = "walk"
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loop_mode = 1
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tracks/0/type = "value"
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tracks/0/imported = false
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tracks/0/enabled = true
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tracks/0/path = NodePath("Sprite:frame")
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tracks/0/interp = 1
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tracks/0/loop_wrap = true
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tracks/0/keys = {
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"times": PackedFloat32Array(0, 1),
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"transitions": PackedFloat32Array(1, 1),
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"update": 0,
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"values": [0, 11]
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}
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[sub_resource type="AnimationLibrary" id="AnimationLibrary_au2ov"]
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_data = {
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"RESET": SubResource("Animation_uq0h4"),
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"double_jump": SubResource("Animation_10ku2"),
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"fall": SubResource("Animation_ibg22"),
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"idle": SubResource("Animation_5rh2e"),
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"jump": SubResource("Animation_jaga7"),
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"walk": SubResource("Animation_6odvc")
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}
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[sub_resource type="Resource" id="Resource_27kjk"]
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script = ExtResource("7_f5w5i")
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expression = "randf() < 0.5"
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[node name="WanderingFrog" type="CharacterBody2D"]
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collision_mask = 2
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input_pickable = true
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script = ExtResource("1_tfcjx")
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[node name="Shadow" type="ColorRect" parent="."]
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material = SubResource("ShaderMaterial_fnfpn")
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offset_left = -19.0
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offset_top = -6.0
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offset_right = 21.0
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offset_bottom = 12.0
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[node name="CollisionShape2D" type="CollisionShape2D" parent="."]
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position = Vector2(0, -15)
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shape = SubResource("CapsuleShape2D_1ethx")
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[node name="AnimationPlayer" type="AnimationPlayer" parent="."]
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libraries = {
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"": SubResource("AnimationLibrary_au2ov")
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}
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[node name="Sprite" type="Sprite2D" parent="."]
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texture_filter = 1
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texture = ExtResource("2_hm4wf")
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offset = Vector2(0, -12)
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hframes = 31
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[node name="StateChart" type="Node" parent="."]
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script = ExtResource("3_2vqqk")
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track_in_editor = true
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[node name="Wander" type="Node" parent="StateChart"]
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editor_description = "This controls the wandering."
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script = ExtResource("4_44md5")
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initial_state = NodePath("Decide Next")
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[node name="Decide Next" type="Node" parent="StateChart/Wander"]
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editor_description = "In this state the frog randomly decides what to do next. The \"To Idle\" transition has a guard which will pick it with a chance of 50%. If it is not picked, then the \"To Walk\" transition is picked. "
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script = ExtResource("5_j65h7")
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[node name="To Idle" type="Node" parent="StateChart/Wander/Decide Next"]
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script = ExtResource("6_s6am2")
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to = NodePath("../../Idle")
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guard = SubResource("Resource_27kjk")
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delay_in_seconds = "0.0"
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[node name="To Walk" type="Node" parent="StateChart/Wander/Decide Next"]
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script = ExtResource("6_s6am2")
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to = NodePath("../../Walk")
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delay_in_seconds = "0.0"
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[node name="Idle" type="Node" parent="StateChart/Wander"]
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editor_description = "In this state the frog stands idly around for a random time."
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script = ExtResource("5_j65h7")
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[node name="To Decide Next" type="Node" parent="StateChart/Wander/Idle"]
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editor_description = "This will bring the frog back into the \"Decide Next\" state after a random amount of time."
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script = ExtResource("6_s6am2")
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to = NodePath("../../Decide Next")
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delay_in_seconds = "randf_range(1.5, 3)"
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[node name="Walk" type="Node" parent="StateChart/Wander"]
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editor_description = "In this state the frog walks into a random direction for a random amount of time."
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script = ExtResource("5_j65h7")
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[node name="To Decide Next" type="Node" parent="StateChart/Wander/Walk"]
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editor_description = "This will bring the frog back into the \"Decide Next\" state after a random amount of time."
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script = ExtResource("6_s6am2")
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to = NodePath("../../Idle")
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delay_in_seconds = "randf_range(3, 7)"
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[connection signal="state_entered" from="StateChart/Wander/Idle" to="." method="_on_idle_state_entered"]
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[connection signal="state_entered" from="StateChart/Wander/Walk" to="." method="_on_walk_state_entered"]
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[connection signal="state_physics_processing" from="StateChart/Wander/Walk" to="." method="_on_walk_state_physics_processing"]
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