big four object, 3 tiers, custom signal, gamecontroller

.editorconfig

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+root = true
+
+[*]
+charset = utf-8

.gitattributes

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+# Normalize EOL for all files that Git considers text files.
+* text=auto eol=lf

.gitignore

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+# Godot 4+ specific ignores
+.godot/
+/android/

icon.svg

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+<svg xmlns="http://www.w3.org/2000/svg" width="128" height="128"><rect width="124" height="124" x="2" y="2" fill="#363d52" stroke="#212532" stroke-width="4" rx="14"/><g fill="#fff" transform="translate(12.322 12.322)scale(.101)"><path d="M105 673v33q407 354 814 0v-33z"/><path fill="#478cbf" d="m105 673 152 14q12 1 15 14l4 67 132 10 8-61q2-11 15-15h162q13 4 15 15l8 61 132-10 4-67q3-13 15-14l152-14V427q30-39 56-81-35-59-83-108-43 20-82 47-40-37-88-64 7-51 8-102-59-28-123-42-26 43-46 89-49-7-98 0-20-46-46-89-64 14-123 42 1 51 8 102-48 27-88 64-39-27-82-47-48 49-83 108 26 42 56 81zm0 33v39c0 276 813 276 814 0v-39l-134 12-5 69q-2 10-14 13l-162 11q-12 0-16-11l-10-65H446l-10 65q-4 11-16 11l-162-11q-12-3-14-13l-5-69z"/><path d="M483 600c0 34 58 34 58 0v-86c0-34-58-34-58 0z"/><circle cx="725" cy="526" r="90"/><circle cx="299" cy="526" r="90"/></g><g fill="#414042" transform="translate(12.322 12.322)scale(.101)"><circle cx="307" cy="532" r="60"/><circle cx="717" cy="532" r="60"/></g></svg>

icon.svg.import

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+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://dmbvik4xqervy"
+path="res://.godot/imported/icon.svg-218a8f2b3041327d8a5756f3a245f83b.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://icon.svg"
+dest_files=["res://.godot/imported/icon.svg-218a8f2b3041327d8a5756f3a245f83b.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/hdr_compression=1
+compress/normal_map=0
+compress/channel_pack=0
+mipmaps/generate=false
+mipmaps/limit=-1
+roughness/mode=0
+roughness/src_normal=""
+process/fix_alpha_border=true
+process/premult_alpha=false
+process/normal_map_invert_y=false
+process/hdr_as_srgb=false
+process/hdr_clamp_exposure=false
+process/size_limit=0
+detect_3d/compress_to=1
+svg/scale=1.0
+editor/scale_with_editor_scale=false
+editor/convert_colors_with_editor_theme=false

project.godot

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+; Engine configuration file.
+; It's best edited using the editor UI and not directly,
+; since the parameters that go here are not all obvious.
+;
+; Format:
+;   [section] ; section goes between []
+;   param=value ; assign values to parameters
+
+config_version=5
+
+[application]
+
+config/name="JulyGame"
+run/main_scene="uid://coiqh7p31ukig"
+config/features=PackedStringArray("4.4", "Forward Plus")
+config/icon="res://icon.svg"

scenes/game.tscn

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+[gd_scene load_steps=8 format=3 uid="uid://coiqh7p31ukig"]
+
+[ext_resource type="Script" uid="uid://bblqtronap0j4" path="res://scripts/gamecontroller.gd" id="1_lnu2h"]
+[ext_resource type="Script" uid="uid://b7rahgxxw1yuw" path="res://scripts/player.gd" id="1_uwrxv"]
+[ext_resource type="PackedScene" uid="uid://csotsc2cycyia" path="res://scenes/trigger.tscn" id="2_yqjtg"]
+
+[sub_resource type="RectangleShape2D" id="RectangleShape2D_8cj0n"]
+size = Vector2(44, 20)
+
+[sub_resource type="RectangleShape2D" id="RectangleShape2D_uwrxv"]
+
+[sub_resource type="WorldBoundaryShape2D" id="WorldBoundaryShape2D_8cj0n"]
+
+[sub_resource type="CircleShape2D" id="CircleShape2D_8cj0n"]
+
+[node name="game" type="Node2D"]
+script = ExtResource("1_lnu2h")
+
+[node name="StaticBody2D" type="StaticBody2D" parent="."]
+position = Vector2(567, 402)
+metadata/_edit_group_ = true
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="StaticBody2D"]
+shape = SubResource("RectangleShape2D_8cj0n")
+
+[node name="RigidBody2D" type="RigidBody2D" parent="."]
+position = Vector2(593, 331)
+rotation = -0.349066
+metadata/_edit_group_ = true
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="RigidBody2D"]
+shape = SubResource("RectangleShape2D_uwrxv")
+debug_color = Color(0.817443, 0.400008, 0.177458, 0.42)
+
+[node name="RigidBody2D2" type="RigidBody2D" parent="."]
+position = Vector2(575, 221)
+rotation = -0.301036
+metadata/_edit_group_ = true
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="RigidBody2D2"]
+shape = SubResource("RectangleShape2D_uwrxv")
+debug_color = Color(0.817443, 0.400008, 0.177458, 0.42)
+
+[node name="ground" type="StaticBody2D" parent="."]
+position = Vector2(551, 565)
+metadata/_edit_group_ = true
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="ground"]
+shape = SubResource("WorldBoundaryShape2D_8cj0n")
+
+[node name="CharacterBody2D" type="CharacterBody2D" parent="."]
+position = Vector2(567, 380)
+script = ExtResource("1_uwrxv")
+metadata/_edit_group_ = true
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="CharacterBody2D"]
+shape = SubResource("CircleShape2D_8cj0n")
+debug_color = Color(0.172558, 0.632665, 0.34599, 0.42)
+
+[node name="Area2D" parent="." instance=ExtResource("2_yqjtg")]
+position = Vector2(601, 428)
+scale = Vector2(1.36, 1.12)
+
+[connection signal="areaTriggerSignal" from="Area2D" to="." method="_on_trigger"]

scenes/trigger.tscn

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+[gd_scene load_steps=3 format=3 uid="uid://csotsc2cycyia"]
+
+[ext_resource type="Script" uid="uid://ditcg54u4c1lr" path="res://scripts/trigger.gd" id="1_du5ex"]
+
+[sub_resource type="CircleShape2D" id="CircleShape2D_uwrxv"]
+
+[node name="trigger" type="Area2D"]
+scale = Vector2(1.36, 1.12)
+script = ExtResource("1_du5ex")
+metadata/_edit_group_ = true
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="."]
+shape = SubResource("CircleShape2D_uwrxv")
+debug_color = Color(0.599313, 0.407655, 0.917879, 0.42)
+
+[connection signal="body_entered" from="." to="." method="_on_body_entered"]

scripts/gamecontroller.gd

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+extends Node2D
+
+
+# Called when the node enters the scene tree for the first time.
+func _ready() -> void:
+	pass # Replace with function body.
+
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+func _process(delta: float) -> void:
+	pass
+
+
+func _on_trigger(effect: Variant, body: Variant) -> void:
+	print("GC sees trigger "+effect)
+	if not body is Player:
+		body.queue_free()
+	

scripts/gamecontroller.gd.uid

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+uid://bblqtronap0j4

scripts/player.gd

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+class_name Player extends CharacterBody2D
+
+
+const SPEED = 300.0
+const JUMP_VELOCITY = -400.0
+
+
+func _physics_process(delta: float) -> void:
+	# Add the gravity.
+	if not is_on_floor():
+		velocity += get_gravity() * delta
+
+	# Handle jump.
+	if Input.is_action_just_pressed("ui_accept") and is_on_floor():
+		velocity.y = JUMP_VELOCITY
+
+	# Get the input direction and handle the movement/deceleration.
+	# As good practice, you should replace UI actions with custom gameplay actions.
+	var direction := Input.get_axis("ui_left", "ui_right")
+	if direction:
+		velocity.x = direction * SPEED
+	else:
+		velocity.x = move_toward(velocity.x, 0, SPEED)
+
+	move_and_slide()
+	for i in get_slide_collision_count():
+		var c = get_slide_collision(i)
+		if c.get_collider() is RigidBody2D:
+			c.get_collider().apply_central_impulse(-c.get_normal() * 100)

scripts/player.gd.uid

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+uid://b7rahgxxw1yuw

scripts/trigger.gd

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+extends Area2D
+
+@export var effect := "destroy"
+
+#custom signal
+signal areaTriggerSignal(effect, Object)
+
+
+func _on_body_entered(body: Node2D) -> void:
+	print("Trigger sees reaction")
+	areaTriggerSignal.emit(effect, body)
+
+
+func _on_area_trigger_signal(effect: Variant, Object: Variant) -> void:
+	pass # Replace with function body.

scripts/trigger.gd.uid

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+uid://ditcg54u4c1lr