Add KnockbackComponent and HazardComponent for enhanced enemy interactions; integrate knockback effects in DamageComponent

objects/entities/cactus.tscn

@@ -0,0 +1,41 @@
+[gd_scene load_steps=6 format=3 uid="uid://un55bdc2cg2q"]
+
+[ext_resource type="Texture2D" uid="uid://djifxc5x0dyrw" path="res://sprites/ppc_tileset.png" id="1_1nndd"]
+[ext_resource type="Script" uid="uid://cgfynrn68lp12" path="res://scripts/components/KnockbackComponent.cs" id="2_bljtt"]
+[ext_resource type="Script" uid="uid://nhu2xd8611fk" path="res://scripts/components/HazardComponent.cs" id="3_bljtt"]
+
+[sub_resource type="RectangleShape2D" id="RectangleShape2D_14ml2"]
+size = Vector2(14, 15)
+
+[sub_resource type="RectangleShape2D" id="RectangleShape2D_4q8oh"]
+size = Vector2(16, 16)
+
+[node name="Cactus" type="StaticBody2D"]
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="."]
+position = Vector2(0, 0.5)
+shape = SubResource("RectangleShape2D_14ml2")
+
+[node name="Sprite2D" type="Sprite2D" parent="."]
+texture = ExtResource("1_1nndd")
+hframes = 12
+vframes = 12
+frame = 71
+
+[node name="Area2D" type="Area2D" parent="."]
+collision_mask = 12
+
+[node name="CollisionShape2D" type="CollisionShape2D" parent="Area2D"]
+position = Vector2(-0.5, 0)
+shape = SubResource("RectangleShape2D_4q8oh")
+debug_color = Color(0.285572, 0.422655, 0.118384, 0.42)
+
+[node name="KnockbackComponent" type="Node" parent="."]
+script = ExtResource("2_bljtt")
+metadata/_custom_type_script = "uid://cgfynrn68lp12"
+
+[node name="HazardComponent" type="Node2D" parent="." node_paths=PackedStringArray("KnockbackComponent", "HazardArea")]
+script = ExtResource("3_bljtt")
+KnockbackComponent = NodePath("../KnockbackComponent")
+HazardArea = NodePath("../Area2D")
+metadata/_custom_type_script = "uid://nhu2xd8611fk"