Game rule prototype

game/project.godot

@@ -10,7 +10,8 @@ config_version=5
 
 [application]
 
-config/name="Langjam Game"
+config/name="Gamma cooked"
+run/main_scene="uid://ce1jmpre2oxkg"
 config/features=PackedStringArray("4.5", "GL Compatibility")
 config/icon="res://icon.svg"
 

game/rule_entity_parent.gd

@@ -0,0 +1,87 @@
+extends Node
+
+var initializing = true
+
+# Set a property on an entity
+func set_entity_property(obj: Object, property_name: StringName, value: Variant):
+	obj.set(property_name, value)
+	obj.set_meta(property_name, value)
+
+func set_entity_property_deferred(obj: Object, property_name: StringName, value: Variant):
+	obj.set_deferred(property_name, value)
+	obj.call_deferred("set_meta", property_name, value)
+
+func get_entity_property(obj: Object, property_name: StringName) -> Variant:
+	var v = obj.get(property_name)
+	if v != null:
+		return v
+	if property_name in obj.get_meta_list():
+		return obj.get_meta(property_name)
+	return null
+
+# Called when the node enters the scene tree for the first time.
+func _ready() -> void:
+	pass
+	#for c in get_children():
+		#var e = SimEntity.new(c)
+		#entities.push_back(e)
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+func _process(_delta: float) -> void:
+	pass
+
+var sad_texture: Texture2D = load("res://textures/sad1.svg")
+
+# Perform a deferred update using a recording object.
+# fn must:
+#  * Be pure
+#  * Only use state it captured when it was created (not new global state)
+#  * Be commutative and associated with all other updates on the property.
+# If these conditions are met, the order of updates should not be observable, so the order of 
+# rule execution should not be observable.
+func deferred_update(record: Dictionary, obj: Object, property_name: StringName, fn):
+	var key = [obj, property_name]
+	var v = record.get(key)
+	if v == null:
+		v = get_entity_property(obj, property_name)
+	v = fn.call(v)
+	record[key] = v
+
+func _physics_process(_delta: float) -> void:
+	var recorded: Dictionary = {}
+	for a in get_children():
+		if initializing:
+			deferred_update(recorded, a, StringName("friend"), func(_v): return "None")
+		for b in get_children():
+			if a == b:
+				continue
+			#if get_entity_property(b, StringName("moving")):
+			var a_offset: Vector2 = get_entity_property(a, StringName("position"))
+			var b_offset: Vector2 = get_entity_property(b, StringName("position"))
+			if a_offset.distance_to(b_offset) < 20:
+				deferred_update(recorded, a, StringName("friend"), func(_v): return b.name)
+			if a_offset.distance_to(b_offset) < 100:
+				var vel = (a_offset - b_offset) / 100
+				deferred_update(recorded, a, StringName("position"), func (v): return v - vel)
+
+		if get_entity_property(a, StringName("emotional")):
+			for b in get_children():
+				if a == b:
+					continue
+				var a_offset: Vector2 = get_entity_property(a, StringName("position"))
+				var b_offset = get_entity_property(b, StringName("position"))
+				if a_offset.distance_to(b_offset) < 10:
+					deferred_update(recorded, a, StringName("texture"), func (_v): return sad_texture)
+
+		if get_entity_property(a, StringName("moving")):
+			var offset = get_entity_property(a, StringName("position"))
+			if offset != null:
+				deferred_update(recorded, a, StringName("position"), func (v): 
+					v.x += 1
+					return v
+						)
+
+	for k in recorded.keys():
+		set_entity_property(k[0], k[1], recorded[k])
+
+	initializing = false

game/rule_entity_parent.gd.uid

@@ -0,0 +1 @@
+uid://b4s1n6b74hrj0

game/test_scene.tscn

@@ -1,9 +1,22 @@
-[gd_scene load_steps=2 format=3 uid="uid://ce1jmpre2oxkg"]
+[gd_scene load_steps=4 format=3 uid="uid://ce1jmpre2oxkg"]
 
-[ext_resource type="Texture2D" uid="uid://cy64oitmrt583" path="res://icon.svg" id="1_uhqqe"]
+[ext_resource type="Script" uid="uid://b4s1n6b74hrj0" path="res://rule_entity_parent.gd" id="1_uhqqe"]
+[ext_resource type="Texture2D" uid="uid://ecg3llvsdms" path="res://textures/wink.svg" id="2_ia1lp"]
+[ext_resource type="Texture2D" uid="uid://cy64oitmrt583" path="res://icon.svg" id="3_sasra"]
 
 [node name="Node2D" type="Node2D"]
+script = ExtResource("1_uhqqe")
+
+[node name="Line2D" type="Line2D" parent="."]
+position = Vector2(-5, 36)
+points = PackedVector2Array(0, 0, 30, 50)
+
+[node name="Sprite2D2" type="Sprite2D" parent="."]
+position = Vector2(801, 177)
+texture = ExtResource("3_sasra")
 
 [node name="Sprite2D" type="Sprite2D" parent="."]
-position = Vector2(414, 299)
-texture = ExtResource("1_uhqqe")
+position = Vector2(399, 173)
+texture = ExtResource("2_ia1lp")
+metadata/moving = true
+metadata/emotional = true

game/textures/happy.svg.import

@@ -0,0 +1,43 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://502oh1bix4id"
+path="res://.godot/imported/happy.svg-fd33a7aeedbdafea8797b06b9dd0664e.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://textures/happy.svg"
+dest_files=["res://.godot/imported/happy.svg-fd33a7aeedbdafea8797b06b9dd0664e.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
+svg/scale=1.0
+editor/scale_with_editor_scale=false
+editor/convert_colors_with_editor_theme=false

game/textures/sad1.svg.import

@@ -0,0 +1,43 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://c6njtxqwr03s2"
+path="res://.godot/imported/sad1.svg-ff4ee8724c479ec02c56521325058822.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://textures/sad1.svg"
+dest_files=["res://.godot/imported/sad1.svg-ff4ee8724c479ec02c56521325058822.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
+svg/scale=1.0
+editor/scale_with_editor_scale=false
+editor/convert_colors_with_editor_theme=false