Add food and yam interaction

assets/ore/ore.tscn

@@ -0,0 +1,5 @@
+[gd_scene load_steps=2 format=2]
+
+[ext_resource path="res://assets/ore/ore.glb" type="PackedScene" id=1]
+
+[node name="ore" instance=ExtResource( 1 )]

assets/protodungman/DungMan.tscn

@@ -1,5 +1,12 @@
-[gd_scene load_steps=2 format=2]
+[gd_scene load_steps=3 format=2]
 
 [ext_resource path="res://assets/protodungman/DungMan.glb" type="PackedScene" id=1]
 
+[sub_resource type="SpatialMaterial" id=1]
+albedo_color = Color( 0.666667, 0.870588, 0.760784, 1 )
+roughness = 0.72
+
 [node name="DungMan" instance=ExtResource( 1 )]
+
+[node name="Dungee" parent="." index="0"]
+material/0 = SubResource( 1 )

assets/yam/yam.tscn

@@ -0,0 +1,5 @@
+[gd_scene load_steps=2 format=2]
+
+[ext_resource path="res://assets/yam/yam.glb" type="PackedScene" id=1]
+
+[node name="yam" instance=ExtResource( 1 )]

item_types/cooked_yam.tres

@@ -0,0 +1,9 @@
+[gd_resource type="Resource" load_steps=3 format=2]
+
+[ext_resource path="res://scripts/ItemType.gd" type="Script" id=1]
+[ext_resource path="res://assets/yam/yam.tscn" type="PackedScene" id=2]
+
+[resource]
+script = ExtResource( 1 )
+name = "Cooked Yam"
+visual_scene = ExtResource( 2 )

item_types/ore.tres

@@ -0,0 +1,9 @@
+[gd_resource type="Resource" load_steps=3 format=2]
+
+[ext_resource path="res://scripts/ItemType.gd" type="Script" id=1]
+[ext_resource path="res://assets/ore/ore.tscn" type="PackedScene" id=2]
+
+[resource]
+script = ExtResource( 1 )
+name = "Ore"
+visual_scene = ExtResource( 2 )

item_types/raw_yam.tres

@@ -0,0 +1,9 @@
+[gd_resource type="Resource" load_steps=3 format=2]
+
+[ext_resource path="res://scripts/ItemType.gd" type="Script" id=1]
+[ext_resource path="res://assets/yam/yam.tscn" type="PackedScene" id=2]
+
+[resource]
+script = ExtResource( 1 )
+name = "Raw Yam"
+visual_scene = ExtResource( 2 )

item_types/repair_kit.tres

@@ -0,0 +1,9 @@
+[gd_resource type="Resource" load_steps=3 format=2]
+
+[ext_resource path="res://scripts/ItemType.gd" type="Script" id=1]
+[ext_resource path="res://assets/yam/yam.tscn" type="PackedScene" id=2]
+
+[resource]
+script = ExtResource( 1 )
+name = "Repair Kit"
+visual_scene = ExtResource( 2 )

project.godot

@@ -63,6 +63,21 @@ _global_script_classes=[ {
 "class": "HistoryRow",
 "language": "GDScript",
 "path": "res://addons/dialogic/Example Assets/History/HistoryRow.gd"
+}, {
+"base": "Resource",
+"class": "ItemType",
+"language": "GDScript",
+"path": "res://scripts/ItemType.gd"
+}, {
+"base": "Resource",
+"class": "Recipe",
+"language": "GDScript",
+"path": "res://scripts/Recipe.gd"
+}, {
+"base": "Resource",
+"class": "RecipeDB",
+"language": "GDScript",
+"path": "res://scripts/RecipeDB.gd"
 } ]
 _global_script_class_icons={
 "DTS": "",
@@ -75,7 +90,10 @@ _global_script_class_icons={
 "DialogicParser": "",
 "DialogicResources": "",
 "DialogicUtil": "",
-"HistoryRow": ""
+"HistoryRow": "",
+"ItemType": "",
+"Recipe": "",
+"RecipeDB": ""
 }
 
 [application]
@@ -86,6 +104,8 @@ config/icon="res://icon.png"
 
 [display]
 
+window/size/width=2048
+window/size/height=1200
 window/dpi/allow_hidpi=true
 
 [editor_plugins]

recipes/all_recipes.tres

@@ -0,0 +1,8 @@
+[gd_resource type="Resource" load_steps=3 format=2]
+
+[ext_resource path="res://scripts/RecipeDB.gd" type="Script" id=1]
+[ext_resource path="res://recipes/repair_kit_recipe.tres" type="Resource" id=2]
+
+[resource]
+script = ExtResource( 1 )
+recipes = [ ExtResource( 2 ) ]

recipes/repair_kit_recipe.tres

@@ -0,0 +1,11 @@
+[gd_resource type="Resource" load_steps=4 format=2]
+
+[ext_resource path="res://scripts/Recipe.gd" type="Script" id=1]
+[ext_resource path="res://item_types/ore.tres" type="Resource" id=2]
+[ext_resource path="res://item_types/raw_yam.tres" type="Resource" id=3]
+
+[resource]
+script = ExtResource( 1 )
+item_type_in_1 = ExtResource( 2 )
+item_type_in_2 = ExtResource( 2 )
+item_type_out = ExtResource( 3 )

scenes/dev-akshay.tscn

@@ -1,9 +1,11 @@
-[gd_scene load_steps=5 format=2]
+[gd_scene load_steps=7 format=2]
 
 [ext_resource path="res://scenes/player.tscn" type="PackedScene" id=1]
 [ext_resource path="res://scenes/moon.tscn" type="PackedScene" id=2]
 [ext_resource path="res://scenes/power_station.tscn" type="PackedScene" id=3]
+[ext_resource path="res://item_types/raw_yam.tres" type="Resource" id=4]
 [ext_resource path="res://scenes/item_holder.tscn" type="PackedScene" id=5]
+[ext_resource path="res://item_types/ore.tres" type="Resource" id=6]
 
 [node name="dev_akshay" type="Spatial"]
 
@@ -17,8 +19,11 @@ time_to_generate = 5.0
 
 [node name="item_holder" parent="." instance=ExtResource( 5 )]
 transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, -4.04269, 0, -4.32055 )
-start_with_item = "Ore"
+start_with_item = ExtResource( 4 )
 
 [node name="item_holder2" parent="." instance=ExtResource( 5 )]
 transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 3.179, 0, -4.17727 )
-start_with_item = "Roe"
+start_with_item = ExtResource( 6 )
+
+[node name="item_holder3" parent="." instance=ExtResource( 5 )]
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, -0.0480788, 0, -7.2244 )

scenes/dinner_table.tscn

@@ -0,0 +1,47 @@
+[gd_scene load_steps=5 format=2]
+
+[ext_resource path="res://scenes/item_holder.tscn" type="PackedScene" id=1]
+
+[sub_resource type="CylinderMesh" id=1]
+height = 0.1
+radial_segments = 8
+
+[sub_resource type="CylinderMesh" id=2]
+top_radius = 0.1
+bottom_radius = 0.1
+height = 0.738
+radial_segments = 16
+
+[sub_resource type="CylinderShape" id=3]
+height = 0.87498
+
+[node name="dinner_table" type="Spatial"]
+
+[node name="MeshInstance" type="MeshInstance" parent="."]
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.648164, 0 )
+mesh = SubResource( 1 )
+
+[node name="MeshInstance2" type="MeshInstance" parent="."]
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.274821, 0.806474 )
+mesh = SubResource( 2 )
+
+[node name="MeshInstance3" type="MeshInstance" parent="."]
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0.831715, 0.274821, 0.00579381 )
+mesh = SubResource( 2 )
+
+[node name="MeshInstance4" type="MeshInstance" parent="."]
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, -0.012414, 0.274821, -0.832128 )
+mesh = SubResource( 2 )
+
+[node name="MeshInstance5" type="MeshInstance" parent="."]
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, -0.809991, 0.274821, 0.00269032 )
+mesh = SubResource( 2 )
+
+[node name="StaticBody" type="StaticBody" parent="."]
+
+[node name="CollisionShape" type="CollisionShape" parent="StaticBody"]
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.439889, 0 )
+shape = SubResource( 3 )
+
+[node name="item_holder" parent="." instance=ExtResource( 1 )]
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.776869, 0 )

scenes/hydroponics_station.tscn

@@ -1,15 +1,13 @@
 [gd_scene load_steps=6 format=2]
 
-[ext_resource path="res://scripts/hydroponics_station.gd" type="Script" id=2]
+[ext_resource path="res://scenes/item_holder.tscn" type="PackedScene" id=1]
+[ext_resource path="res://scripts/hydroponics_station/hydroponics_station.gd" type="Script" id=2]
 [ext_resource path="res://scenes/coin_machine.tscn" type="PackedScene" id=3]
 
 [sub_resource type="CylinderMesh" id=1]
 height = 0.936
 radial_segments = 8
 
-[sub_resource type="CubeMesh" id=3]
-size = Vector3( 0.4, 1, 0.4 )
-
 [sub_resource type="ConvexPolygonShape" id=2]
 points = PoolVector3Array( -0.0608763, 0.449247, 0.974783, -0.0608763, -0.464612, -0.974783, -0.0608763, 0.449247, -0.974783, 0.974783, -0.464612, -0.0608763, -0.974783, -0.464612, 0.0608763, 0.974783, 0.449247, 0.0608763, 0.0606902, -0.464648, 0.97486, -0.974783, 0.449247, -0.0608763, 0.7071, 0.453517, -0.7071, -0.705748, -0.468, -0.705748, -0.7071, 0.453517, 0.7071, 0.7071, 0.453517, 0.7071, 0.705748, -0.468, 0.705748, -0.705748, -0.468, 0.705748, 0.705748, -0.468, -0.705748, -0.7071, 0.453517, -0.7071, 0.0606902, -0.464648, -0.97486, -0.974783, -0.464612, -0.0608763, 0.974783, -0.464612, 0.0608763, -0.0608763, -0.464612, 0.974783, 0.0606902, 0.449283, 0.97486, 0.0606902, 0.449283, -0.97486, 0.974783, 0.449247, -0.0608763, -0.974783, 0.449247, 0.0608763, -0.642208, -0.46642, 0.73398, -0.642208, -0.46642, -0.73398, 0.578116, -0.464071, -0.760529, 0.578116, -0.464071, 0.760529, 0.760589, -0.464107, 0.577971, -0.760589, -0.464107, 0.577971, -0.760589, -0.464107, -0.577971, 0.760589, -0.464107, -0.577971 )
 
@@ -20,12 +18,6 @@ script = ExtResource( 2 )
 transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.372095, 0 )
 mesh = SubResource( 1 )
 
-[node name="Yam" type="MeshInstance" parent="MeshInstance"]
-transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.886431, 0 )
-visible = false
-mesh = SubResource( 3 )
-skeleton = NodePath("../../..")
-
 [node name="status_label" type="Label3D" parent="MeshInstance"]
 unique_name_in_owner = true
 transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.737837, 0 )
@@ -40,8 +32,12 @@ shape = SubResource( 2 )
 [node name="coin_machine" parent="." instance=ExtResource( 3 )]
 transform = Transform( 0.540026, 0, 0, 0, 0.571038, 0, 0, 0, 0.497953, 0, 0.418593, 0 )
 
+[node name="item_holder" parent="." instance=ExtResource( 1 )]
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0.991012, 0 )
+
 [node name="grow_timer" type="Timer" parent="."]
 one_shot = true
 
 [connection signal="coin_requirement_met" from="coin_machine" to="." method="_on_coin_machine_coin_requirement_met"]
-[connection signal="timeout" from="grow_timer" to="." method="_on_Timer_timeout"]
+[connection signal="item_changed" from="item_holder" to="." method="_on_item_holder_item_changed"]
+[connection signal="timeout" from="grow_timer" to="." method="_on_grow_timer_timeout"]

scenes/item.tscn

@@ -1,15 +1,11 @@
-[gd_scene load_steps=3 format=2]
+[gd_scene load_steps=2 format=2]
 
 [ext_resource path="res://scripts/item.gd" type="Script" id=1]
 
-[sub_resource type="CylinderMesh" id=1]
-height = 1.0
-
 [node name="item" type="Spatial"]
 script = ExtResource( 1 )
 
-[node name="MeshInstance" type="MeshInstance" parent="."]
+[node name="visual" type="Spatial" parent="."]
-mesh = SubResource( 1 )
 
 [node name="ItemLabel" type="Label3D" parent="."]
 transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0.0275149, 0.721019, 1.58046 )

scenes/oven.tscn

@@ -0,0 +1,59 @@
+[gd_scene load_steps=7 format=2]
+
+[ext_resource path="res://scenes/item_holder.tscn" type="PackedScene" id=1]
+[ext_resource path="res://scripts/oven/oven.gd" type="Script" id=2]
+[ext_resource path="res://scenes/coin_machine.tscn" type="PackedScene" id=3]
+
+[sub_resource type="SpatialMaterial" id=1]
+albedo_color = Color( 0, 0, 0, 1 )
+
+[sub_resource type="CylinderMesh" id=2]
+material = SubResource( 1 )
+top_radius = 0.5
+bottom_radius = 0.5
+height = 0.1
+radial_segments = 9
+
+[sub_resource type="CubeMesh" id=3]
+size = Vector3( 1.362, 0.49, 0.081 )
+
+[node name="oven" type="Spatial"]
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, -0.0063355, 0.00319374, -0.00456095 )
+script = ExtResource( 2 )
+
+[node name="CSGBox" type="CSGBox" parent="."]
+use_collision = true
+width = 1.36825
+height = 1.04121
+depth = 1.24388
+
+[node name="CSGBox2" type="CSGBox" parent="CSGBox"]
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0.000755012, -0.038668, 0.154754 )
+operation = 2
+width = 1.20449
+height = 0.784214
+depth = 1.29741
+
+[node name="coil" type="MeshInstance" parent="CSGBox"]
+unique_name_in_owner = true
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, -0.00424552, 0.556925, -0.00761187 )
+mesh = SubResource( 2 )
+skeleton = NodePath("../..")
+
+[node name="item_holder" parent="CSGBox/coil" instance=ExtResource( 1 )]
+unique_name_in_owner = true
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0.00424552, 0.29638, 0.00761187 )
+
+[node name="backsplash" type="MeshInstance" parent="CSGBox"]
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, -0.00424552, 0.556925, -0.575066 )
+mesh = SubResource( 3 )
+skeleton = NodePath("../..")
+
+[node name="coin_machine" parent="." instance=ExtResource( 3 )]
+
+[node name="cook_timer" type="Timer" parent="."]
+one_shot = true
+
+[connection signal="item_changed" from="CSGBox/coil/item_holder" to="." method="_on_item_holder_item_changed"]
+[connection signal="coin_requirement_met" from="coin_machine" to="." method="_on_coin_machine_coin_requirement_met"]
+[connection signal="timeout" from="cook_timer" to="." method="_on_cook_timer_timeout"]

scenes/player.tscn

@@ -1,4 +1,4 @@
-[gd_scene load_steps=6 format=2]
+[gd_scene load_steps=8 format=2]
 
 [ext_resource path="res://scripts/Player.gd" type="Script" id=1]
 [ext_resource path="res://assets/protodungman/DungMan.glb" type="PackedScene" id=2]
@@ -11,11 +11,23 @@ extents = Vector3( 0.25, 0.25, 1 )
 radius = 0.210213
 height = 0.85525
 
+[sub_resource type="Gradient" id=4]
+offsets = PoolRealArray( 0, 0.776119, 1 )
+colors = PoolColorArray( 0, 0, 0, 1, 0, 0, 0, 0.429105, 0, 0, 0, 0 )
+
+[sub_resource type="GradientTexture2D" id=5]
+gradient = SubResource( 4 )
+fill_to = Vector2( 0, 1 )
+
 [node name="Player" type="KinematicBody"]
 script = ExtResource( 1 )
 
 [node name="DungMan" parent="." instance=ExtResource( 2 )]
 
+[node name="ItemSpawn" type="Spatial" parent="DungMan"]
+unique_name_in_owner = true
+transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1.6244, 0 )
+
 [node name="TriggerVolume" type="Area" parent="DungMan"]
 unique_name_in_owner = true
 transform = Transform( 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0.630386 )
@@ -32,17 +44,19 @@ shape = SubResource( 2 )
 transform = Transform( 1, 0, 0, 0, 0.5, 0.866025, 0, -0.866025, 0.5, 0, 5.44166, 3.39746 )
 fov = 50.0
 
-[node name="ItemSpawn" type="Spatial" parent="."]
-
 [node name="UI" type="CanvasLayer" parent="."]
 
 [node name="Control" type="Control" parent="UI"]
 margin_right = 40.0
 margin_bottom = 40.0
 
+[node name="TextureRect" type="TextureRect" parent="UI/Control"]
+margin_right = 565.0
+margin_bottom = 164.0
+texture = SubResource( 5 )
+expand = true
+
 [node name="MarginContainer" type="MarginContainer" parent="UI/Control"]
-margin_right = 128.0
-margin_bottom = 128.0
 custom_constants/margin_right = 16
 custom_constants/margin_top = 16
 custom_constants/margin_left = 16

scripts/ItemType.gd

@@ -0,0 +1,10 @@
+extends Resource
+class_name ItemType
+
+export var name: String
+export var visual_scene: PackedScene
+
+func spawn_node() -> Spatial:
+	var node = preload("res://scenes/item.tscn").instance()
+	node.set_item_type(self)
+	return node

scripts/Player.gd

@@ -87,7 +87,7 @@ func try_trigger_interact(area):
 func drop_item_in_hand():
 	print("player dropped ", item_in_hand.item_name)
 	var item_dropped = item_in_hand
-	$ItemSpawn.remove_child(item_in_hand)
+	$"%ItemSpawn".remove_child(item_in_hand)
 	item_in_hand = null
 	return item_dropped
 	
@@ -96,10 +96,13 @@ func pick_up_item(item):
 	if item_in_hand != null:
 		item_dropped = drop_item_in_hand()
 	item_in_hand = item
-	$ItemSpawn.add_child(item_in_hand)
+	$"%ItemSpawn".add_child(item_in_hand)
 	print("player picked up ", item_in_hand.item_name)
 	return item_dropped
-	
+
+func has_item() -> bool:
+	return item_in_hand != null
+
 func get_item_in_hand():
 	var item_to_return = null
 	if item_in_hand != null:

scripts/Recipe.gd

@@ -0,0 +1,6 @@
+extends Resource
+class_name Recipe
+
+export var item_type_in_1: Resource
+export var item_type_in_2: Resource
+export var item_type_out: Resource

scripts/RecipeDB.gd

@@ -0,0 +1,10 @@
+extends Resource
+class_name RecipeDB
+
+export(Array, Resource) var recipes
+
+func find_recipe(item_type_1: Resource, item_type_2: Resource) -> Resource:
+	for recipe in recipes:
+		pass
+		# TODO, find recipe
+	return recipes[0] # This is just stubbed; remove later

scripts/hydroponics_station.gd

@@ -2,6 +2,36 @@ extends Spatial
 
 export var grow_time: float = 2.0
 
+class GrowerStateIdle:
+	func _on_coin_machine_coin_requirement_met(player):
+		pass
+
+	func _on_grow_timer_timeout():
+		pass
+
+	func _on_item_holder_item_changed(item):
+		pass
+
+class GrowerStateGrowing:
+	func _on_coin_machine_coin_requirement_met(player):
+		pass
+
+	func _on_grow_timer_timeout():
+		pass
+
+	func _on_item_holder_item_changed(item):
+		pass
+
+class GrowerStateBlocked:
+	func _on_coin_machine_coin_requirement_met(player):
+		pass
+
+	func _on_grow_timer_timeout():
+		pass
+
+	func _on_item_holder_item_changed(item):
+		pass
+
 func _ready():
 	$grow_timer.wait_time = grow_time
 
@@ -10,7 +40,7 @@ func _on_coin_machine_coin_requirement_met(player):
 		$coin_machine.enabled = false
 		$grow_timer.start()
 
-func _on_Timer_timeout():
+func _on_grow_timer_timeout():
 	var yam = preload("res://scenes/item_pickup.tscn").instance()
 	yam.item_name = "yam"
 	yam.item_amount = 1
@@ -25,3 +55,6 @@ func _on_yam_item_tree_exited():
 
 func _process(delta):
 	$"%status_label".text = "%f" % $grow_timer.time_left
+
+func _on_item_holder_item_changed(item):
+	pass # Replace with function body.

scripts/hydroponics_station/hydroponics_station.gd

@@ -0,0 +1,32 @@
+extends Spatial
+
+const StateIdle = preload("res://scripts/hydroponics_station/state/idle.gd")
+const StateGrowing = preload("res://scripts/hydroponics_station/state/growing.gd")
+const StateBlocked = preload("res://scripts/hydroponics_station/state/blocked.gd")
+
+export var grow_time: float = 2.0
+var state = null
+
+func _ready():
+	$grow_timer.wait_time = grow_time
+
+	state = StateIdle.new()
+	state.ctx = self
+	state.enter_from(null)
+	print("hydroponics_station: NULL -> ", state.NAME)
+
+func change_state(new_state):
+	print("hydroponics_station: ", state.NAME, " -> ", new_state.NAME)
+	new_state.ctx = self
+	state.exit_to(new_state)
+	new_state.enter_from(state)
+	state = new_state
+
+func _on_coin_machine_coin_requirement_met(player):
+	state.on_coin_machine_coin_requirement_met(player)
+
+func _on_grow_timer_timeout():
+	state.on_grow_timer_timeout()
+
+func _on_item_holder_item_changed(item):
+	state.on_item_holder_item_changed(item)

scripts/hydroponics_station/state/blocked.gd

@@ -0,0 +1,25 @@
+extends Reference
+
+const NAME = "blocked"
+
+var ctx = null
+
+func _init():
+	pass
+
+func enter_from(state):
+	ctx.get_node("coin_machine").enabled = false
+	ctx.get_node("item_holder").add_enabled = true
+
+func exit_to(state):
+	pass
+
+func on_coin_machine_coin_requirement_met(player):
+	assert(false)
+
+func on_grow_timer_timeout():
+	assert(false)
+
+func on_item_holder_item_changed(item):
+	if item == null:
+		ctx.change_state(ctx.StateIdle.new())

scripts/hydroponics_station/state/growing.gd

@@ -0,0 +1,30 @@
+extends Reference
+
+const NAME = "growing"
+const raw_yam = preload("res://item_types/raw_yam.tres")
+
+var ctx = null
+var mat: SpatialMaterial = SpatialMaterial.new()
+
+func _init():
+	mat.albedo_color = Color.green
+
+func enter_from(state):
+	ctx.get_node("coin_machine").enabled = false
+	ctx.get_node("item_holder").add_enabled = false
+	ctx.get_node("grow_timer").start()
+	ctx.get_node("MeshInstance").set_surface_material(0, mat)
+
+func exit_to(state):
+	ctx.get_node("MeshInstance").set_surface_material(0, null)
+
+func on_coin_machine_coin_requirement_met(player):
+	assert(false, "coin machine should be disabled while growing")
+
+func on_grow_timer_timeout():
+	var item_holder = ctx.get_node("item_holder")
+	item_holder.spawn_item(raw_yam)
+	ctx.change_state(ctx.StateBlocked.new())
+
+func on_item_holder_item_changed(item):
+	assert(item.item_type == raw_yam)

scripts/hydroponics_station/state/idle.gd

@@ -0,0 +1,25 @@
+extends Reference
+
+const NAME = "idle"
+
+var ctx = null
+
+func _init():
+	pass
+
+func enter_from(state):
+	ctx.get_node("coin_machine").enabled = true
+	ctx.get_node("item_holder").add_enabled = true
+
+func exit_to(state):
+	pass
+
+func on_coin_machine_coin_requirement_met(player):
+	ctx.change_state(ctx.StateGrowing.new())
+
+func on_grow_timer_timeout():
+	assert(false, "grow timer shouldn't trigger while idle")
+
+func on_item_holder_item_changed(item):
+	assert(item != null)
+	ctx.change_state(ctx.StateBlocked.new())

scripts/item.gd

@@ -1,8 +1,15 @@
 extends Spatial
 
-export var item_name : String = ""
+export var item_type: Resource setget set_item_type
+var item_name: String
 
-# Called when the node enters the scene tree for the first time.
+func set_item_type(new_value: Resource):
-func _ready():
+	item_type = new_value
-	assert(item_name != "")
+	if not is_inside_tree():
-	$ItemLabel.text = "Item: %s" % item_name
+		yield(self, "ready")
+	item_name = item_type.name
+	$ItemLabel.text = item_type.name
+	for child in $visual.get_children():
+		child.queue_free()
+	$visual.add_child(item_type.visual_scene.instance())
+	

scripts/item_holder.gd

@@ -1,17 +1,21 @@
 extends Spatial
+signal item_changed(item)
 
-export var start_with_item : String = ""
+export var start_with_item : Resource
+export var remove_enabled := true
+export var add_enabled := true
 
 var item_in_hold
 
 # Called when the node enters the scene tree for the first time.
 func _ready():
-	if start_with_item != "":
+	if start_with_item != null:
-		var item_instance = preload("res://scenes/item.tscn").instance()
+		add_item(start_with_item.spawn_node())
-		item_instance.item_name = start_with_item
-		add_item(item_instance)
 
-func remove_item():
+func has_item() -> bool:
+	return item_in_hold != null
+
+func remove_item() -> Node:
 	assert(item_in_hold != null)
 	var removed_item = item_in_hold
 	$ItemSpawn.remove_child(item_in_hold)
@@ -23,7 +27,62 @@ func add_item(item):
 	$ItemSpawn.add_child(item)
 	item_in_hold = item
 
+func spawn_item(item_type: Resource):
+	assert(!has_item())
+	assert(item_type is ItemType)
+	add_item(item_type.spawn_node())
+	emit_signal("item_changed", item_in_hold)
+
+func destroy_item():
+	var removed_item = item_in_hold
+	$ItemSpawn.remove_child(item_in_hold)
+	item_in_hold = null
+	removed_item.queue_free()
+	emit_signal("item_changed", item_in_hold)
+
+func swap_with_player(player) -> bool:
+	assert(has_item() and player.has_item())
+	if not remove_enabled or not add_enabled:
+		return false
+
+	var player_item = player.drop_item_in_hand()
+	player.pick_up_item(remove_item())
+	add_item(player_item)
+	
+	$AudioStreamPlayer.play()
+	emit_signal("item_changed", item_in_hold)
+	return true
+
+func give_to_player(player) -> bool:
+	assert(has_item() and not player.has_item())
+	if not remove_enabled:
+		return false
+
+	var player_item = player.pick_up_item(remove_item())
+
+	$AudioStreamPlayer.play()
+	emit_signal("item_changed", item_in_hold)
+	return true
+
+func take_from_player(player) -> bool:
+	assert(not has_item() and player.has_item())
+	if not add_enabled:
+		return false
+	
+	add_item(player.drop_item_in_hand())
+
+	$AudioStreamPlayer.play()
+	emit_signal("item_changed", item_in_hold)
+	return true
+
 func on_player_interact(player) -> bool:
+	if has_item() and player.has_item():
+		return swap_with_player(player)
+	elif has_item() and not player.has_item():
+		return give_to_player(player)
+	elif not has_item() and player.has_item():
+		return take_from_player(player)
+		
 	var player_item = player.get_item_in_hand()
 	if item_in_hold == null:
 		if player_item == null:

scripts/oven/oven.gd

@@ -0,0 +1,32 @@
+extends Spatial
+
+const StateIdle = preload("res://scripts/oven/state/idle.gd")
+const StateCooking = preload("res://scripts/oven/state/cooking.gd")
+const StateHoldingItem = preload("res://scripts/oven/state/holding_item.gd")
+
+export var cook_time: float = 2.0
+var state = null
+
+func _ready():
+	$cook_timer.wait_time = cook_time
+
+	state = StateIdle.new()
+	state.ctx = self
+	state.enter_from(null)
+	print("hydroponics_station: NULL -> ", state.NAME)
+
+func change_state(new_state):
+	print("hydroponics_station: ", state.NAME, " -> ", new_state.NAME)
+	new_state.ctx = self
+	state.exit_to(new_state)
+	new_state.enter_from(state)
+	state = new_state
+
+func _on_coin_machine_coin_requirement_met(player):
+	state.on_coin_machine_coin_requirement_met(player)
+
+func _on_cook_timer_timeout():
+	state.on_cook_timer_timeout()
+
+func _on_item_holder_item_changed(item):
+	state.on_item_holder_item_changed(item)

scripts/oven/state/cooking.gd

@@ -0,0 +1,33 @@
+extends Reference
+
+const NAME = "cooking"
+const cooked_yam = preload("res://item_types/cooked_yam.tres")
+
+var ctx = null
+var mat: SpatialMaterial = SpatialMaterial.new()
+
+func _init():
+	mat.albedo_color = Color.red
+
+func enter_from(state):
+	ctx.get_node("coin_machine").enabled = false
+	ctx.get_node("%item_holder").add_enabled = false
+	ctx.get_node("%item_holder").remove_enabled = false
+
+	ctx.get_node("cook_timer").start()
+	ctx.get_node("%coil").set_surface_material(0, mat)
+
+func exit_to(state):
+	ctx.get_node("%coil").set_surface_material(0, null)
+
+func on_coin_machine_coin_requirement_met(player):
+	assert(false, "coin machine should be disabled while growing")
+
+func on_cook_timer_timeout():
+	var item_holder = ctx.get_node("%item_holder")
+	item_holder.destroy_item()
+	item_holder.spawn_item(cooked_yam)
+	ctx.change_state(ctx.StateHoldingItem.new())
+
+func on_item_holder_item_changed(item):
+	assert(item == null || item.item_type == cooked_yam)

scripts/oven/state/holding_item.gd

@@ -0,0 +1,35 @@
+extends Reference
+
+const NAME = "holding_item"
+const raw_yam = preload("res://item_types/raw_yam.tres")
+
+var ctx = null
+
+func _init():
+	pass
+
+func enter_from(state):
+	if ctx.get_node("%item_holder").item_in_hold.item_type == raw_yam:
+		ctx.get_node("coin_machine").enabled = true
+		ctx.get_node("%item_holder").add_enabled = false
+		ctx.get_node("%item_holder").remove_enabled = false
+	else:
+		ctx.get_node("coin_machine").enabled = false
+		ctx.get_node("%item_holder").add_enabled = true
+		ctx.get_node("%item_holder").remove_enabled = true
+
+func exit_to(state):
+	pass
+
+func on_coin_machine_coin_requirement_met(player):
+	if ctx.get_node("%item_holder").item_in_hold.item_type == raw_yam:
+		ctx.change_state(ctx.StateCooking.new())
+
+func on_cook_timer_timeout():
+	assert(false)
+
+func on_item_holder_item_changed(item):
+	if item == null:
+		ctx.change_state(ctx.StateIdle.new())
+	else:
+		ctx.change_state(ctx.StateHoldingItem.new())

scripts/oven/state/idle.gd

@@ -0,0 +1,26 @@
+extends Reference
+
+const NAME = "idle"
+
+var ctx = null
+
+func _init():
+	pass
+
+func enter_from(state):
+	ctx.get_node("coin_machine").enabled = false
+	ctx.get_node("%item_holder").add_enabled = true
+	ctx.get_node("%item_holder").remove_enabled = false # not possible
+
+func exit_to(state):
+	pass
+
+func on_coin_machine_coin_requirement_met(player):
+	assert(false, "coin machine should be disabled while idle")
+
+func on_cook_timer_timeout():
+	assert(false, "cook timer shouldn't trigger while idle")
+
+func on_item_holder_item_changed(item):
+	assert(item != null, "there should be no item to remove while idle")
+	ctx.change_state(ctx.StateHoldingItem.new())