fx: mirroring nucleotide prey state

.gitmodules

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+[submodule "evolve-die-repeat/thirdparty/godot-cpp"]
+	path = evolve-die-repeat/thirdparty/godot-cpp
+	url = https://github.com/godotengine/godot-cpp.git
+	branch = 4.5

README.md

@@ -1,2 +1,25 @@
-# notSpore
+# Evolve Die Repeat TODO: The name is a work in progress
+
+This is currently quite empty.
+
+## C++ setup
+From anywhere in proejct:
+```bash
+git submodule update --init --recursive
+```
+
+In `thirdparty`:
+```bash
+godot --headless --dump-extension-api
+```
+
+To compile the cpp extension, run this from `thirdparty/godot-cpp`:
+```bash
+scons platform=linux target=template_debug generate_bindings=yes custom_api_file=../extension_api.json -j8
+```
+
+Finally, to compile and extern local `.cpp` files, run this from `thirdparty`:
+```bash
+scons platform=linux target=template_debug -j8
+```
 

evolve-die-repeat/.editorconfig

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

evolve-die-repeat/.gitattributes

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

evolve-die-repeat/.gitignore

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

evolve-die-repeat/debug_label.gd

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+extends Label
+
+#var counter := Test.new()  # C++ class
+
+func _ready() -> void:
+	#text += str(counter.get_counter())
+	pass
+
+func _process(delta: float) -> void:
+	pass
+	#if Input.is_action_just_pressed("ui_accept"):
+	#counter.increment()
+	#var baseText := text
+	#baseText = baseText.left(baseText.length() - str(counter.get_counter()).length())
+	#text = baseText + str(counter.get_counter())

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evolve-die-repeat/game_manager.gd

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+extends Node
+
+var screen_size = Vector2(1920.0, 1080.0)  # Default screen size (this is a float for some reason)
+var viewport_size
+
+func _ready() -> void:
+	viewport_size = get_viewport().get_visible_rect().size
+
+# TODO: This needs to be called from a script inheriting a CharacterBody2D (e.g. the player)
+# Alternative would be to pass the player reference to this script (which might be better?)
+func init_screen_size(x:float, y:float) -> void:
+	screen_size.x = x
+	screen_size.y = y
+
+# This can take a vector of any size (but should be 2d, other components are unused)
+func get_boundaried_position(position):
+	## clamp
+	#return position.clamp(Vector2.ZERO, screen_size)
+	
+	## periodic
+	position.x = wrapf(position.x, 0, screen_size.x)
+	position.y = wrapf(position.y, 0, screen_size.y)
+	return position

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evolve-die-repeat/main_menu.gd

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+extends Control
+
+
+func _on_play_button_pressed() -> void:
+	get_tree().change_scene_to_file("res://molecular/molecular_stage.tscn")

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+offset_top = 256.0
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+text = "Play"
+
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+process/channel_remap/alpha=3
+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

evolve-die-repeat/molecular/assets/prey/prey-injured-frame1.png.import

@@ -0,0 +1,40 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://bqll8ge4cr2uf"
+path="res://.godot/imported/prey-injured-frame1.png-6fdfb22e05a71b519337c6ac43b474b1.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://molecular/assets/prey/prey-injured-frame1.png"
+dest_files=["res://.godot/imported/prey-injured-frame1.png-6fdfb22e05a71b519337c6ac43b474b1.ctex"]
+
+[params]
+
+compress/mode=0
+compress/high_quality=false
+compress/lossy_quality=0.7
+compress/uastc_level=0
+compress/rdo_quality_loss=0.0
+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/channel_remap/red=0
+process/channel_remap/green=1
+process/channel_remap/blue=2
+process/channel_remap/alpha=3
+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

evolve-die-repeat/molecular/molecular_player.gd

@@ -0,0 +1,63 @@
+extends CharacterBody2D
+
+@export var attack_duration = 0.12 # TODO: finetune
+@export var attack_cooldown_duration = 0.4
+
+@onready var attack_area: Area2D = $AttackArea
+@onready var attack_timer: Timer = $AttackTimer
+@onready var attack_cooldown_timer: Timer = $AttackCooldownTimer
+
+@export var speed = 200
+var damage = 10
+var can_attack = true
+
+func _ready() -> void:
+	var screen_size = get_viewport_rect().size
+	GameManager.init_screen_size(screen_size.x, screen_size.y)
+	
+	attack_area.monitoring = false # no collision until attacking
+	attack_timer.wait_time = attack_duration
+	attack_cooldown_timer.wait_time = attack_cooldown_duration
+
+func _process(delta):
+	velocity = Vector2.ZERO
+	if Input.is_action_pressed("move_right"):
+		velocity.x += 1
+	if Input.is_action_pressed("move_left"):
+		velocity.x -= 1
+	if Input.is_action_pressed("move_down"):
+		velocity.y += 1
+	if Input.is_action_pressed("move_up"):
+		velocity.y -= 1
+	if Input.is_action_pressed("try_attack"):
+		try_attack()
+
+	move_and_collide(speed * velocity * delta)
+	#position += speed * velocity * delta
+	position = GameManager.get_boundaried_position(position)
+	
+func try_attack() -> void:
+	if not can_attack:
+		return
+	attack()
+	
+func attack() -> void:
+	can_attack = false
+	attack_area.monitoring = true
+	attack_timer.start()
+	# TODO: attack animation+sound+etc
+	
+func _on_attack_timeout() -> void:
+	attack_area.monitoring = false
+	attack_cooldown_timer.start()
+	
+func _on_cooldown_timeout() -> void:
+	can_attack = true
+	
+func _on_attack_hit(body: Node2D) -> void:
+	if body.is_in_group("prey") or body.is_in_group("predators"):
+		if body.has_method("handle_damage"):
+			body.handle_damage(damage)
+	elif body.is_in_group("resources"):
+		pass
+		# TODO: resource handling logic

evolve-die-repeat/molecular/molecular_player.gd.uid

@@ -0,0 +1 @@
+uid://di7eglnrnqm6i

evolve-die-repeat/molecular/molecular_player.tscn

@@ -0,0 +1,56 @@
+[gd_scene load_steps=6 format=3 uid="uid://dxluckxdkpv4f"]
+
+[ext_resource type="Script" uid="uid://di7eglnrnqm6i" path="res://molecular/molecular_player.gd" id="1_0ix7k"]
+[ext_resource type="Texture2D" uid="uid://cxwvga07sm3yl" path="res://molecular/assets/player-sprite-placeholder-crop.png" id="2_en8op"]
+
+[sub_resource type="SpriteFrames" id="SpriteFrames_onrkg"]
+animations = [{
+"frames": [{
+"duration": 1.0,
+"texture": ExtResource("2_en8op")
+}],
+"loop": true,
+"name": &"default",
+"speed": 5.0
+}]
+
+[sub_resource type="RectangleShape2D" id="RectangleShape2D_en8op"]
+size = Vector2(765.4969, 706.5864)
+
+[sub_resource type="CapsuleShape2D" id="CapsuleShape2D_4flbx"]
+radius = 191.95984
+height = 1295.8773
+
+[node name="player" type="CharacterBody2D"]
+collision_mask = 2
+script = ExtResource("1_0ix7k")
+
+[node name="AnimatedSprite2D" type="AnimatedSprite2D" parent="."]
+visibility_layer = 2
+scale = Vector2(0.5, 0.5)
+sprite_frames = SubResource("SpriteFrames_onrkg")
+
+[node name="AttackArea" type="Area2D" parent="."]
+position = Vector2(0, 56)
+rotation = -1.5732701
+collision_mask = 2
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="AttackArea"]
+position = Vector2(29.579561, 730.73236)
+shape = SubResource("RectangleShape2D_en8op")
+debug_color = Color(0.80813414, 0.3957308, 0.3356335, 0.41960785)
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="." groups=["player"]]
+position = Vector2(0, 56)
+rotation = -1.5732701
+shape = SubResource("CapsuleShape2D_4flbx")
+
+[node name="AttackTimer" type="Timer" parent="."]
+one_shot = true
+
+[node name="AttackCooldownTimer" type="Timer" parent="."]
+one_shot = true
+
+[connection signal="body_entered" from="AttackArea" to="." method="_on_attack_hit"]
+[connection signal="timeout" from="AttackTimer" to="." method="_on_attack_timeout"]
+[connection signal="timeout" from="AttackCooldownTimer" to="." method="_on_cooldown_timeout"]

evolve-die-repeat/molecular/nucleotide_prey.gd

@@ -0,0 +1,147 @@
+extends AbstractPrey2D
+
+@onready var sprite = get_node("AnimatedSprite2D")
+
+# Mirroed sprites for periodic boundary
+var mirrorSprite1: Node2D
+var mirrorSprite2: Node2D
+var mirrorSprite3: Node2D
+
+
+# Called when the node enters the scene tree for the first time.
+func _ready() -> void:
+	health = maxHealth
+	sprite.animation = "Healthy"
+	sprite.play()
+	
+	mirrorSprite1 = sprite.duplicate()
+	mirrorSprite2 = sprite.duplicate()
+	mirrorSprite3 = sprite.duplicate()
+
+	add_child(mirrorSprite1)
+	add_child(mirrorSprite2)
+	add_child(mirrorSprite3)
+
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+func _process(delta: float) -> void:
+	# Boundary mirroring
+	_handle_wrapping()
+
+func _physics_process(delta: float) -> void:
+	#self.move(Vector3(randfn(0, 1), randfn(0, 1), 0))
+	pass
+
+func move(motion: Vector3) -> void:
+	move_and_collide(Vector2(motion.x, motion.y))  # Moves along the given vector
+	
+	# Apply boundary to new position
+	position = GameManager.get_boundaried_position(position)
+
+func handle_damage(dmg: int) -> void:
+	health = max(0, health-dmg)
+	if health == 0:
+		die()
+	if health < maxHealth:
+		become_injured()
+
+func die() -> void:
+	sprite.play("Dying")
+	super.die()
+
+func become_injured() -> void:
+	sprite.animation = "Injured"
+	mirrorSprite1.animation = "Injured"
+	mirrorSprite2.animation = "Injured"
+	mirrorSprite3.animation = "Injured"
+	sprite.play()
+
+# Mirroring table:
+# |---|---|---|---|
+# | 4 | 3 | 4 | 3 |
+# |---|===|===|---|
+# | 1 ǁ 2 | 1 ǁ 2 |
+# |---ǁ---|---ǁ---|
+# | 4 ǁ 3 | 4 ǁ 3 |
+# |---|===|===|---|
+# | 1 | 2 | 1 | 2 |
+# |---|---|---|---|
+# If less than viewport size away from an edge, mirror over that edge (for seamless boundary)
+# NOTE: For this to look correctly the camera size should be smaller than half the screen port (in
+# 		any one dimension. Ideally, the difference between camera size and half the screen port is 
+# 		at least the size of the prey sprite)
+func _handle_wrapping():
+	mirrorSprite1.visible = false
+	mirrorSprite2.visible = false
+	mirrorSprite3.visible = false
+	
+	# TODO: Assume viewport size << screen size and only draw according to GameManager.viewport_size
+	# Find corresponding section of the screen
+	if position.x < GameManager.screen_size.x/2 and position.y < GameManager.screen_size.y/2:
+		# 2
+		mirrorSprite1.visible = true
+		mirrorSprite2.visible = true
+		mirrorSprite3.visible = true
+		
+		# Right
+		#mirrorSprite1.position = Vector2(sprite.position.x + GameManager.screen_size.x, sprite.position.y)
+		mirrorSprite1.position = Vector2(GameManager.screen_size.x, 0)
+		# Diag
+		#mirrorSprite2.position = Vector2(sprite.position.x + GameManager.screen_size.x, sprite.position.y + GameManager.screen_size.y)
+		mirrorSprite3.position = Vector2(GameManager.screen_size.x, GameManager.screen_size.y)
+		# Bottom
+		#mirrorSprite3.position = Vector2(sprite.position.x, sprite.position.y + GameManager.screen_size.y)
+		mirrorSprite2.position = Vector2(0, GameManager.screen_size.y)
+
+		
+	elif position.x < GameManager.screen_size.x/2:
+		# 3
+		mirrorSprite1.visible = true
+		mirrorSprite2.visible = true
+		mirrorSprite3.visible = true
+		
+		# Top
+		#mirrorSprite1.position = Vector2(sprite.position.x, sprite.position.y - GameManager.screen_size.y)
+		mirrorSprite1.position = Vector2(0, - GameManager.screen_size.y)
+		# Diag
+		#mirrorSprite2.position = Vector2(sprite.position.x + GameManager.screen_size.x, sprite.position.y - GameManager.screen_size.y)
+		mirrorSprite2.position = Vector2(GameManager.screen_size.x, - GameManager.screen_size.y)
+		# Right
+		#mirrorSprite3.position = Vector2(sprite.position.x + GameManager.screen_size.x, sprite.position.y)
+		mirrorSprite3.position = Vector2(GameManager.screen_size.x, 0)
+		
+		
+	elif position.y < GameManager.screen_size.y/2:
+		# 1
+		mirrorSprite1.visible = true
+		mirrorSprite2.visible = true
+		mirrorSprite3.visible = true
+		
+		# Left 
+		#mirrorSprite1.position = Vector2(sprite.position.x - GameManager.screen_size.x, sprite.position.y)
+		mirrorSprite1.position = Vector2(- GameManager.screen_size.x, 0)
+		# Bottom
+		#mirrorSprite2.position = Vector2(sprite.position.x, sprite.position.y + GameManager.screen_size.y)
+		mirrorSprite2.position = Vector2(0, GameManager.screen_size.y)
+		# Diag
+		#mirrorSprite3.position = Vector2(sprite.position.x - GameManager.screen_size.x, sprite.position.y + GameManager.screen_size.y)
+		mirrorSprite3.position = Vector2(- GameManager.screen_size.x, GameManager.screen_size.y)
+
+
+	else:
+		# 4
+		mirrorSprite1.visible = true
+		mirrorSprite2.visible = true
+		mirrorSprite3.visible = true
+		
+		# Left
+		#mirrorSprite1.position = Vector2(sprite.position.x - GameManager.screen_size.x, sprite.position.y)
+		mirrorSprite1.position = Vector2(- GameManager.screen_size.x, 0)
+		# Diag
+		#mirrorSprite2.position = Vector2(sprite.position.x - GameManager.screen_size.x, sprite.position.y - GameManager.screen_size.y)
+		mirrorSprite2.position = Vector2(- GameManager.screen_size.x, - GameManager.screen_size.y)
+		# Top
+		#mirrorSprite3.position = Vector2(sprite.position.x, sprite.position.y - GameManager.screen_size.y)
+		mirrorSprite3.position = Vector2(0,  - GameManager.screen_size.y)
+
+	

evolve-die-repeat/molecular/nucleotide_prey.gd.uid

@@ -0,0 +1 @@
+uid://bgossk6xo31gi

evolve-die-repeat/molecular/nucleotide_prey.tscn

@@ -0,0 +1,58 @@
+[gd_scene load_steps=10 format=3 uid="uid://c3iw2v3x6ngrb"]
+
+[ext_resource type="PackedScene" uid="uid://bvsdg1v3ksixy" path="res://shared/npc/prey2D.tscn" id="1_qvulj"]
+[ext_resource type="Script" uid="uid://bgossk6xo31gi" path="res://molecular/nucleotide_prey.gd" id="2_0227s"]
+[ext_resource type="Texture2D" uid="uid://bhcb5g7g7um8" path="res://molecular/assets/prey/prey-dying-frame0.png" id="2_lkj7f"]
+[ext_resource type="Texture2D" uid="uid://bxn11avw7dykl" path="res://molecular/assets/prey/prey-dying-frame1.png" id="3_svqyr"]
+[ext_resource type="Texture2D" uid="uid://ctkehsavw6ghx" path="res://molecular/assets/prey/prey-healthy-frame0.png" id="4_ee1gb"]
+[ext_resource type="Texture2D" uid="uid://uy28y3mkk6nt" path="res://molecular/assets/prey/prey-healthy-frame1.png" id="5_ae5nf"]
+[ext_resource type="Texture2D" uid="uid://btnyajci8ptb2" path="res://molecular/assets/prey/prey-injured-frame0.png" id="6_0f87h"]
+[ext_resource type="Texture2D" uid="uid://bqll8ge4cr2uf" path="res://molecular/assets/prey/prey-injured-frame1.png" id="7_w7inl"]
+
+[sub_resource type="SpriteFrames" id="SpriteFrames_66x8p"]
+animations = [{
+"frames": [{
+"duration": 20.0,
+"texture": ExtResource("2_lkj7f")
+}, {
+"duration": 20.0,
+"texture": ExtResource("3_svqyr")
+}],
+"loop": true,
+"name": &"Dying",
+"speed": 1.0
+}, {
+"frames": [{
+"duration": 20.0,
+"texture": ExtResource("4_ee1gb")
+}, {
+"duration": 20.0,
+"texture": ExtResource("5_ae5nf")
+}],
+"loop": true,
+"name": &"Healthy",
+"speed": 1.0
+}, {
+"frames": [{
+"duration": 20.0,
+"texture": ExtResource("6_0f87h")
+}, {
+"duration": 20.0,
+"texture": ExtResource("7_w7inl")
+}],
+"loop": true,
+"name": &"Injured",
+"speed": 1.0
+}]
+
+[node name="NucleotidePrey" groups=["prey"] instance=ExtResource("1_qvulj")]
+collision_layer = 2
+motion_mode = 1
+script = ExtResource("2_0227s")
+maxHealth = 20
+
+[node name="AnimatedSprite2D" type="AnimatedSprite2D" parent="." index="0"]
+scale = Vector2(0.1, 0.1)
+sprite_frames = SubResource("SpriteFrames_66x8p")
+animation = &"Dying"
+frame_progress = 0.60472965

evolve-die-repeat/molecular/prey_manager.gd

@@ -0,0 +1,13 @@
+extends SpawnManager2D
+
+@export var cam: Camera2D
+
+# Called when the node enters the scene tree for the first time.
+func _ready() -> void:
+	spawnRange = cam.get_viewport_rect()
+	_spawn_minimum()
+
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+func _process(delta: float) -> void:
+	pass

evolve-die-repeat/molecular/prey_manager.gd.uid

@@ -0,0 +1 @@
+uid://umx4w11edif

evolve-die-repeat/project.godot

@@ -0,0 +1,62 @@
+; 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="EvolveDieRepeat"
+run/main_scene="uid://drgv154ei1vrl"
+config/features=PackedStringArray("4.5", "Forward Plus")
+config/icon="res://icon.svg"
+
+[autoload]
+
+GameManager="*res://game_manager.gd"
+
+[global_group]
+
+player="All scenes that constitute players should be added here."
+prey="any passive killable entities belong in this group"
+
+[input]
+
+move_right={
+"deadzone": 0.2,
+"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":68,"key_label":0,"unicode":100,"location":0,"echo":false,"script":null)
+]
+}
+move_left={
+"deadzone": 0.2,
+"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":65,"key_label":0,"unicode":97,"location":0,"echo":false,"script":null)
+]
+}
+move_up={
+"deadzone": 0.2,
+"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":87,"key_label":0,"unicode":119,"location":0,"echo":false,"script":null)
+]
+}
+move_down={
+"deadzone": 0.2,
+"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":83,"key_label":0,"unicode":115,"location":0,"echo":false,"script":null)
+]
+}
+try_attack={
+"deadzone": 0.2,
+"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,"location":0,"echo":false,"script":null)
+]
+}
+
+[layer_names]
+
+2d_render/layer_1="Player"
+2d_render/layer_2="Prey"
+
+[rendering]
+
+textures/canvas_textures/default_texture_filter=0

evolve-die-repeat/shared/npc/npc2D.gd

@@ -0,0 +1,41 @@
+extends CharacterBody2D
+class_name NPC2D
+
+@export var maxHealth: int = 0
+var health: int = maxHealth
+
+signal died
+
+# Called when the node enters the scene tree for the first time.
+func _ready() -> void:
+	spawn()
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+func _process(delta: float) -> void:
+	pass
+
+func spawn() -> void:
+	pass
+
+func take_damage(dmg: int) -> void:
+	self.health -= dmg;
+	if self.health < 0:
+		self.die()
+
+# I think the move per npc is to model concrete behaviours in functions. 
+# How the npc acts can be determined elsewhere, these functions just implement the behvaiour
+func flee(direction: Vector3) -> void:
+	push_error("Function flee() not implemented.")
+	
+# Im envisioning we feed on "sustenance (to be classed)" only; when something dies it should spawn some sustenance
+func feed(source ) -> void:
+	push_error("Function feed() not implemented.")
+	
+func die() -> void:
+	died.emit()
+	queue_free()
+	# TODO: should associate this class with a loot table (or equivalent), and can then implement logic for dying in parent class here.
+	
+func move(destination: Vector3) -> void:
+	push_error("Function move() not implemented.")
+	

evolve-die-repeat/shared/npc/npc2D.gd.uid

@@ -0,0 +1 @@
+uid://biu3sctw15ga

evolve-die-repeat/shared/npc/npc2D.tscn

@@ -0,0 +1,10 @@
+[gd_scene load_steps=2 format=3 uid="uid://biup0eej85fq2"]
+
+[ext_resource type="Script" uid="uid://biu3sctw15ga" path="res://shared/npc/npc2D.gd" id="1_ucjfp"]
+
+[node name="NPC" type="CharacterBody2D"]
+script = ExtResource("1_ucjfp")
+
+[node name="CollisionPolygon2D" type="CollisionPolygon2D" parent="."]
+position = Vector2(7.215866, -0.5034294)
+polygon = PackedVector2Array(-8.831272, -2.3390446, -5.7760534, -2.3993049, -4.0230684, 0.41277456, -5.8890305, 2.9948444, -8.862037, 2.9326901, -10.268076, 0.28495264)

evolve-die-repeat/shared/npc/predator2D.gd

@@ -0,0 +1,15 @@
+extends NPC2D
+class_name AbstractPredator2D
+
+# 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 attack(target) -> void:
+	push_error("Function attack() not implemented.")

evolve-die-repeat/shared/npc/predator2D.gd.uid

@@ -0,0 +1 @@
+uid://dgfimmq53whll

evolve-die-repeat/shared/npc/predator2D.tscn

@@ -0,0 +1,7 @@
+[gd_scene load_steps=3 format=3 uid="uid://b7wqd5owafn6g"]
+
+[ext_resource type="PackedScene" uid="uid://biup0eej85fq2" path="res://shared/npc/npc2D.tscn" id="1_4llks"]
+[ext_resource type="Script" uid="uid://dgfimmq53whll" path="res://shared/npc/predator2D.gd" id="2_rj1ok"]
+
+[node name="AbstractPredator" instance=ExtResource("1_4llks")]
+script = ExtResource("2_rj1ok")

evolve-die-repeat/shared/npc/prey2D.gd

@@ -0,0 +1,12 @@
+extends NPC2D
+class_name AbstractPrey2D
+
+# 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
+	

evolve-die-repeat/shared/npc/prey2D.gd.uid

@@ -0,0 +1 @@
+uid://76jxpubyd8wp

evolve-die-repeat/shared/npc/prey2D.tscn

@@ -0,0 +1,7 @@
+[gd_scene load_steps=3 format=3 uid="uid://bvsdg1v3ksixy"]
+
+[ext_resource type="PackedScene" uid="uid://biup0eej85fq2" path="res://shared/npc/npc2D.tscn" id="1_2m1le"]
+[ext_resource type="Script" uid="uid://76jxpubyd8wp" path="res://shared/npc/prey2D.gd" id="2_dny00"]
+
+[node name="AbstractPrey" instance=ExtResource("1_2m1le")]
+script = ExtResource("2_dny00")

evolve-die-repeat/shared/npc/spawnManager2D.tscn

@@ -0,0 +1,6 @@
+[gd_scene load_steps=2 format=3 uid="uid://dje58m1cj34gn"]
+
+[ext_resource type="Script" uid="uid://coetidfssb80w" path="res://shared/npc/spawn_manager_2d.gd" id="1_624qc"]
+
+[node name="SpawnManager2d" type="Node"]
+script = ExtResource("1_624qc")

evolve-die-repeat/shared/npc/spawn_manager_2d.gd

@@ -0,0 +1,41 @@
+extends Node
+class_name SpawnManager2D
+
+#var scene = preload("res://molecular/nucleotide_prey.tscn")
+@export var scene: PackedScene
+@export var minCount = 1
+@export var maxCount = 2
+@export var spawnRange: Rect2
+var _currentCount = 0
+
+
+# Called when the node enters the scene tree for the first time.
+func _ready() -> void:
+	_spawn_minimum()
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+func _process(delta: float) -> void:
+	pass
+
+func _spawn_minimum() -> void:
+	while _currentCount < minCount and _currentCount < maxCount:
+		_spawn_random()
+
+func _random_pos() -> Vector2:
+	return Vector2(randf_range(spawnRange.position[0], spawnRange.size[0]), randf_range(spawnRange.position[1], spawnRange.size[1]))
+
+func _spawn_random() -> void:
+	var pos = _random_pos()
+	_spawn_creature(pos)
+	_currentCount += 1
+
+func _spawn_creature(position: Vector2) -> void:
+	var instance = scene.instantiate()
+	instance.position = position
+	add_child(instance)
+	if instance.has_signal("died"):
+		instance.died.connect(_on_entity_died)
+		
+func _on_entity_died() -> void:
+	_currentCount = max(0, _currentCount-1)
+	_spawn_minimum()

evolve-die-repeat/shared/npc/spawn_manager_2d.gd.uid

@@ -0,0 +1 @@
+uid://coetidfssb80w

evolve-die-repeat/thirdparty/.gitignore

@@ -0,0 +1,8 @@
+bin
+*.uid
+*sconsign.dblite
+**.os
+
+godot-cpp/bin/
+*.o
+*.so

evolve-die-repeat/thirdparty/SConstruct

@@ -0,0 +1,31 @@
+import os
+from SCons.Script import DefaultEnvironment, ARGUMENTS, Glob, Dir
+
+env = DefaultEnvironment()
+platform = ARGUMENTS.get("platform", "linux")
+target = ARGUMENTS.get("target", "template_debug")  # or template_release
+arch = ARGUMENTS.get("arch", "x86_64")
+
+HERE = Dir(".").abspath
+GODOTCPP = os.path.join(HERE, "godot-cpp")
+
+inc_paths = [
+    os.path.join(GODOTCPP, "include"),
+    os.path.join(GODOTCPP, "gen", "include"),
+]
+for extra in ("godot-headers", "gdextension"):
+    p = os.path.join(GODOTCPP, extra)
+    if os.path.isdir(p):
+        inc_paths.append(p)
+
+env.Append(CPPPATH=inc_paths)
+env.Append(LIBPATH=[os.path.join(GODOTCPP, "bin")])
+env.Append(CXXFLAGS=["-std=c++17", "-fPIC"])
+
+env.Append(LIBS=[f"godot-cpp.{platform}.{target}.{arch}"])
+
+outdir = os.path.join(HERE, "bin")
+os.makedirs(outdir, exist_ok=True)
+soname = f"gol.{platform}.{'debug' if target == 'template_debug' else 'release'}.{arch}"
+
+env.SharedLibrary(target=os.path.join(outdir, soname), source=Glob("src/*.cpp"))

evolve-die-repeat/thirdparty/cpp.gdextension

@@ -0,0 +1,10 @@
+
+[configuration]
+entry_symbol = "gol_library_init"
+compatibility_minimum = "4.5"   ; required in 4.5+
+reloadable = true
+
+[libraries]
+linux.debug.x86_64   = "res://thirdparty/bin/libgol.linux.debug.x86_64"
+
+

evolve-die-repeat/thirdparty/src/test.cpp

@@ -0,0 +1,56 @@
+
+#include <gdextension_interface.h>
+#include <godot_cpp/classes/ref_counted.hpp>
+#include <godot_cpp/core/class_db.hpp>
+#include <godot_cpp/core/defs.hpp>
+#include <godot_cpp/godot.hpp>
+
+using namespace godot;
+
+class Test : public RefCounted {
+  GDCLASS(Test, RefCounted);
+
+  int counter = 0;
+
+  static void _bind_methods() {
+    ClassDB::bind_method(D_METHOD("increment"), &Test::increment);
+    ClassDB::bind_method(D_METHOD("get_counter"), &Test::get_counter);
+    ClassDB::bind_method(D_METHOD("set_counter", "value"), &Test::set_counter);
+    ClassDB::add_property("Test", PropertyInfo(Variant::INT, "counter"),
+                          "set_counter", "get_counter");
+  }
+
+public:
+  int increment() {
+    counter += 1;
+    return counter;
+  }
+
+  int get_counter() const { return counter; }
+
+  void set_counter(int p_value) { counter = p_value; }
+};
+
+extern "C" GDExtensionBool GDE_EXPORT
+gol_library_init(GDExtensionInterfaceGetProcAddress get_proc_address,
+                 GDExtensionClassLibraryPtr library,
+                 GDExtensionInitialization *r_initialization) {
+
+  static GDExtensionBinding::InitObject init(get_proc_address, library,
+                                             r_initialization);
+
+  init.register_initializer([](ModuleInitializationLevel p_level) {
+    if (p_level != MODULE_INITIALIZATION_LEVEL_SCENE) {
+      return;
+    }
+    ClassDB::register_class<Test>();
+  });
+
+  init.register_terminator([](ModuleInitializationLevel /*p_level*/) {
+    // no-op
+  });
+
+  init.set_minimum_library_initialization_level(
+      MODULE_INITIALIZATION_LEVEL_SCENE);
+  return init.init();
+}