ft (wip): hammerhead predator

evolve-die-repeat/molecular/predator/hammerhead_predator.gd

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+extends AbstractPredator2D
+
+# TODO: attacking logic + behaviour
+# TODO: movement is buged (seems to not move/teleport somewhat
+# TODO: mirroring (thought, extracct that to general function/resource?
+
+@onready var sprite = $AnimatedSprite2D
+@onready var fsm = $StateMachine
+
+@export var speed = 0.8
+var desired_rotation: float = self.rotation
+
+func _ready() -> void:
+	health = maxHealth
+	sprite.play("Healthy")
+	
+
+# Called every frame. 'delta' is the elapsed time since the previous frame.
+func _process(delta: float) -> void: 
+	# smoothly rotate
+	if self.rotation != self.desired_rotation: 
+		self.rotation = lerp_angle(self.rotation, self.desired_rotation, clampf(4 * delta, 0, 1))
+
+func _physics_process(delta: float) -> void:
+	pass
+
+# FIXME: (also goes for prey) this is framerate dependent
+func move(motion: Vector3, mod: float = 1.0) -> void:
+	move_and_collide(Vector2(motion.x, motion.y).normalized() * self.speed * mod)  # Moves along the given vector
+	self.desired_rotation = atan2(motion.y, motion.x)	
+		
+	# Apply boundary to new position
+	position = GameManager.get_boundaried_position(position)
+
+
+func _on_sight_body_entered(body: Node2D) -> void:
+	if body.is_in_group("prey") or (health < maxHealth and body.is_in_group("player")):
+		fsm.transition_to_next_state(fsm.States.HUNTING, {"target": body})

evolve-die-repeat/molecular/predator/hammerhead_predator.gd.uid

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+uid://d07cjelbqbiug

evolve-die-repeat/molecular/predator/hammerhead_predator.tscn

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+[gd_scene format=3 uid="uid://s4s66oaexava"]
+
+[ext_resource type="Script" uid="uid://d07cjelbqbiug" path="res://molecular/predator/hammerhead_predator.gd" id="1_xp037"]
+[ext_resource type="Texture2D" uid="uid://ch5rddsumyyhm" path="res://molecular/assets/predator/predator-healthy.png" id="2_34kwa"]
+[ext_resource type="Script" uid="uid://cygrmt03sx0k1" path="res://molecular/predator/state_machine.gd" id="3_xp037"]
+[ext_resource type="Script" uid="uid://xbiqj7ubmj7d" path="res://molecular/prey/state_idle.gd" id="4_8a23j"]
+[ext_resource type="Script" uid="uid://ubcu8fdfxxj1" path="res://molecular/prey/state_random_movement.gd" id="5_6rsu5"]
+
+[sub_resource type="AtlasTexture" id="AtlasTexture_8a23j"]
+atlas = ExtResource("2_34kwa")
+region = Rect2(0, 0, 64, 64)
+
+[sub_resource type="AtlasTexture" id="AtlasTexture_6rsu5"]
+atlas = ExtResource("2_34kwa")
+region = Rect2(64, 0, 64, 64)
+
+[sub_resource type="AtlasTexture" id="AtlasTexture_0ts4d"]
+atlas = ExtResource("2_34kwa")
+region = Rect2(128, 0, 64, 64)
+
+[sub_resource type="SpriteFrames" id="SpriteFrames_shhro"]
+animations = [{
+"frames": [{
+"duration": 3.0,
+"texture": SubResource("AtlasTexture_8a23j")
+}, {
+"duration": 2.0,
+"texture": SubResource("AtlasTexture_6rsu5")
+}, {
+"duration": 4.0,
+"texture": SubResource("AtlasTexture_0ts4d")
+}],
+"loop": true,
+"name": &"Healthy",
+"speed": 5.0
+}]
+
+[node name="HammerheadPredator" type="CharacterBody2D" unique_id=678504815 groups=["predator"]]
+scale = Vector2(0.3, 0.3)
+collision_layer = 4
+collision_mask = 3
+motion_mode = 1
+script = ExtResource("1_xp037")
+maxHealth = 50
+metadata/_custom_type_script = "uid://dgfimmq53whll"
+
+[node name="AnimatedSprite2D" type="AnimatedSprite2D" parent="." unique_id=410999609]
+sprite_frames = SubResource("SpriteFrames_shhro")
+animation = &"Healthy"
+
+[node name="CollisionPolygon2D" type="CollisionPolygon2D" parent="." unique_id=1596156928]
+light_mask = 4
+visibility_layer = 4
+position = Vector2(0.11167908, 1.1167793)
+polygon = PackedVector2Array(-22.184862, -27.994831, 23.481365, -27.21198, 13.82622, 25.891317, -6.005971, 25.891317)
+
+[node name="StateMachine" type="Node" parent="." unique_id=1857729810 node_paths=PackedStringArray("initial_state")]
+script = ExtResource("3_xp037")
+initial_state = NodePath("Idle")
+metadata/_custom_type_script = "uid://ck7k8ht54snsy"
+
+[node name="Idle" type="Node" parent="StateMachine" unique_id=265876039]
+script = ExtResource("4_8a23j")
+metadata/_custom_type_script = "uid://co2xp7gauamql"
+
+[node name="Timer" type="Timer" parent="StateMachine/Idle" unique_id=1870665609]
+one_shot = true
+
+[node name="RandomMovement" type="Node" parent="StateMachine" unique_id=105315122]
+script = ExtResource("5_6rsu5")
+metadata/_custom_type_script = "uid://co2xp7gauamql"
+
+[node name="Timer" type="Timer" parent="StateMachine/RandomMovement" unique_id=447822526]
+one_shot = true
+
+[node name="Sight" type="Area2D" parent="." unique_id=1608385873]
+collision_layer = 0
+collision_mask = 7
+
+[node name="CollisionPolygon2D" type="CollisionPolygon2D" parent="Sight" unique_id=1707240701]
+light_mask = 4
+visibility_layer = 4
+polygon = PackedVector2Array(-27.769547, -29.426758, 31.88504, -29.184647, 12.700996, 28.7294, 56.058624, 148.93633, 22.979004, 163.77974, -19.854843, 161.65926, -53.782654, 143.84715, -8.333115, 30.157196)
+
+[connection signal="body_entered" from="Sight" to="." method="_on_sight_body_entered"]

evolve-die-repeat/molecular/predator/state_machine.gd

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+extends StateMachine
+
+enum States {IDLE, RANDOMMOVEMENT, FEEDING, FLEEING, HUNTING}
+
+# Called when the node enters the scene tree for the first time.
+func _ready() -> void:
+	super()
+	await owner.ready
+
+
+func transition_to_next_state(target: int, data: Dictionary = {}) -> void:
+	match target:
+		States.IDLE: _transition_to_next_state("Idle", data)
+		States.RANDOMMOVEMENT: _transition_to_next_state("RandomMovement", data)
+		States.FEEDING: _transition_to_next_state("Feeding", data)
+		States.FLEEING: _transition_to_next_state("Fleeing", data)
+		States.HUNTING: _transition_to_next_state("Hunting", data)
+		_: push_error("Trying to transition to unknown state {target}")

evolve-die-repeat/molecular/predator/state_machine.gd.uid

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+uid://cygrmt03sx0k1