Very, very basic building stuff.

assets/resources/fence_fortified.png.import

@@ -0,0 +1,34 @@
+[remap]
+
+importer="texture"
+type="CompressedTexture2D"
+uid="uid://cx3x4l20q17xh"
+path="res://.godot/imported/fence_fortified.png-1ae65c603e478020bc26d4e987d66517.ctex"
+metadata={
+"vram_texture": false
+}
+
+[deps]
+
+source_file="res://assets/resources/fence_fortified.png"
+dest_files=["res://.godot/imported/fence_fortified.png-1ae65c603e478020bc26d4e987d66517.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

data/items/fence_fortified.tres

@@ -0,0 +1,12 @@
+[gd_resource type="Resource" script_class="Item" load_steps=4 format=3 uid="uid://c714vj3s6cnqg"]
+
+[ext_resource type="Texture2D" uid="uid://cx3x4l20q17xh" path="res://assets/resources/fence_fortified.png" id="1_hyv8l"]
+[ext_resource type="Script" path="res://model/item.gd" id="1_u43c0"]
+[ext_resource type="PackedScene" uid="uid://dv60qx8nqw3vg" path="res://assets/resources/fence_fortified.tscn" id="2_8ttdv"]
+
+[resource]
+script = ExtResource("1_u43c0")
+name = ""
+scene = ExtResource("2_8ttdv")
+icon = ExtResource("1_hyv8l")
+max_stack_size = 64

data/recipes/fence_fortified.tres

@@ -0,0 +1,12 @@
+[gd_resource type="Resource" script_class="Recipe" load_steps=5 format=3 uid="uid://dtlb5wp5shlm3"]
+
+[ext_resource type="Script" path="res://model/recipe.gd" id="1_h0rj4"]
+[ext_resource type="Resource" uid="uid://bn5j38jbwlj1f" path="res://data/items/stick.tres" id="1_i6g7d"]
+[ext_resource type="Resource" uid="uid://dmjr6pmb17l2y" path="res://data/items/woodplanks.tres" id="2_d54b6"]
+[ext_resource type="Resource" uid="uid://c714vj3s6cnqg" path="res://data/items/fence_fortified.tres" id="3_bsd6g"]
+
+[resource]
+script = ExtResource("1_h0rj4")
+name = "Fence Fortified"
+ingredients = Array[Resource("res://model/item.gd")]([ExtResource("1_i6g7d"), ExtResource("1_i6g7d"), ExtResource("2_d54b6")])
+results = Array[Resource("res://model/item.gd")]([ExtResource("3_bsd6g")])

objects/player.gd

@@ -1,12 +1,13 @@
 class_name Player
 extends CharacterBody3D
 
-const SPEED = 4.0
+const SPEED = 3.0
 const JUMP_VELOCITY = 2.5
 
 @onready var geometry:Node3D = %Geometry
 @onready var actionable_detector = %ActionableDetector
 @onready var animation_tree:AnimationTree = $Geometry/Rogue/AnimationTree
+@onready var build_location:Node3D = %BuildLocation
 
 # Get the gravity from the project settings to be synced with RigidBody nodes.
 var gravity = ProjectSettings.get_setting("physics/3d/default_gravity")
@@ -65,7 +66,7 @@ func on_item_picked_up(item:Item):
 
 
 func get_actionable_global_transform() -> Vector3:
-	return actionable_detector.global_position
+	return build_location.global_position
 
 func _unhandled_input(_event: InputEvent) -> void:
 	if Input.is_action_just_pressed("ui_accept"):

objects/player.tscn

@@ -45,7 +45,11 @@ collision_mask = 16
 [node name="CollisionShape3D" type="CollisionShape3D" parent="Geometry/ActionableDetector"]
 shape = SubResource("SphereShape3D_wrkyq")
 
+[node name="BuildLocation" type="Node3D" parent="Geometry"]
+unique_name_in_owner = true
+transform = Transform3D(2.5, 0, 0, 0, 2.5, 0, 0, 0, 2.5, 0, 0, 2.4682)
+
 [node name="Camera3D" type="Camera3D" parent="."]
 unique_name_in_owner = true
-transform = Transform3D(1, 0, 0, 0, 0.460138, 0.887848, 0, -0.887848, 0.460138, 0, 2.91421, 1.186)
+transform = Transform3D(1, 0, 0, 0, 0.639707, 0.768619, 0, -0.768619, 0.639707, 0, 2.23862, 1.4653)
 current = true

scenes/game.tscn

@@ -1,8 +1,9 @@
-[gd_scene load_steps=8 format=3 uid="uid://cqie4cy0uy1t0"]
+[gd_scene load_steps=9 format=3 uid="uid://cqie4cy0uy1t0"]
 
 [ext_resource type="PackedScene" uid="uid://ch0s3dxx3rpir" path="res://objects/player.tscn" id="2_rjgxk"]
 [ext_resource type="Script" path="res://systems/QuestSystem.gd" id="4_8oxap"]
 [ext_resource type="Script" path="res://systems/BuildSystem.gd" id="4_iqdys"]
+[ext_resource type="Resource" uid="uid://c714vj3s6cnqg" path="res://data/items/fence_fortified.tres" id="5_ii2f8"]
 [ext_resource type="PackedScene" uid="uid://dmagdl5pi6jdj" path="res://world/level.tscn" id="6_svjo8"]
 
 [sub_resource type="ProceduralSkyMaterial" id="ProceduralSkyMaterial_y65pc"]
@@ -35,5 +36,12 @@ script = ExtResource("4_8oxap")
 
 [node name="BuildSystem" type="Node" parent="."]
 script = ExtResource("4_iqdys")
+build_item = ExtResource("5_ii2f8")
+
+[node name="BuildPreview" type="Node3D" parent="BuildSystem"]
+unique_name_in_owner = true
+
+[node name="BuiltStructures" type="Node" parent="BuildSystem"]
+unique_name_in_owner = true
 
 [editable path="Player"]

systems/BuildSystem.gd

@@ -1,14 +1,37 @@
 class_name BuildSystem
 extends Node
 
+@onready var build_preview = %BuildPreview
 @onready var player = %Player
+@onready var built_structures = %BuiltStructures
+
+@export var build_item:Item = null
 
 # Called when the node enters the scene tree for the first time.
 func _ready():
 	pass # Replace with function body.
 
 
+func update_build_preview_item() -> void:
+	for child in build_preview.get_children():
+		if build_item == null or child.scene_file_path != build_item.scene.resource_path:
+			child.get_parent().remove_child(child)
+			child.queue_free()
+			
+	if build_preview.get_child_count() == 0 and build_item != null:
+		build_preview.add_child(build_item.scene.instantiate())
+
 # Called every frame. 'delta' is the elapsed time since the previous frame.
-func _process(delta):
+func _physics_process(_delta):
+	update_build_preview_item()		
+	
 	var build_location:Vector3 = player.get_actionable_global_transform()
-	build_location = Vector3(roundf(build_location.x), build_location.y, roundf(build_location.z))
+	build_location = Vector3(roundf(build_location.x * 2), build_location.y, roundf(build_location.z * 2)) * 0.5
+	build_preview.global_position = build_location
+
+	if build_item != null and Input.is_action_just_pressed("interaction"):
+		var new_structure:Node3D = build_item.scene.instantiate()
+		new_structure.transform = build_preview.transform
+		built_structures.add_child(new_structure)
+		get_viewport().set_input_as_handled()
+		return