From 1a317042c2ea1313368bccf650c582054e367ffc Mon Sep 17 00:00:00 2001
From: Martin Araneda <martix.araneda@gmail.com>
Date: Wed, 22 Feb 2023 21:16:23 -0300
Subject: [PATCH 1/3] New lvl and related config

---
 godot/Main.tscn                      |   2 +-
 godot/levels/TestLevel.tmx           | 112 +++++++++++++++++++++++++++
 godot/levels/TestLevel.tmx.import    |  24 ++++++
 godot/levels/TestLevel.tscn          |  77 ++++++++++++++++++
 src/gui/game_over/GameOverScreen.cpp |   4 +-
 5 files changed, 216 insertions(+), 3 deletions(-)
 create mode 100644 godot/levels/TestLevel.tmx
 create mode 100644 godot/levels/TestLevel.tmx.import
 create mode 100644 godot/levels/TestLevel.tscn

diff --git a/godot/Main.tscn b/godot/Main.tscn
index 1324688..b7e3351 100644
--- a/godot/Main.tscn
+++ b/godot/Main.tscn
@@ -1,7 +1,7 @@
 [gd_scene load_steps=5 format=2]
 
 [ext_resource path="res://Main.gdns" type="Script" id=1]
-[ext_resource path="res://levels/PrototypeR.tscn" type="PackedScene" id=2]
+[ext_resource path="res://levels/TestLevel.tscn" type="PackedScene" id=2]
 [ext_resource path="res://gui/GameOver.tscn" type="PackedScene" id=3]
 [ext_resource path="res://gui/GameWon.tscn" type="PackedScene" id=4]
 
diff --git a/godot/levels/TestLevel.tmx b/godot/levels/TestLevel.tmx
new file mode 100644
index 0000000..043a072
--- /dev/null
+++ b/godot/levels/TestLevel.tmx
@@ -0,0 +1,112 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<map version="1.8" tiledversion="1.8.0" orientation="orthogonal" renderorder="right-down" width="39" height="32" tilewidth="18" tileheight="18" infinite="0" nextlayerid="5" nextobjectid="1">
+ <tileset firstgid="1" source="../tilesets/tiles.tsx"/>
+ <layer id="4" name="Background" width="39" height="32">
+  <data encoding="csv">
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+</data>
+ </layer>
+</map>
diff --git a/godot/levels/TestLevel.tmx.import b/godot/levels/TestLevel.tmx.import
new file mode 100644
index 0000000..83771b2
--- /dev/null
+++ b/godot/levels/TestLevel.tmx.import
@@ -0,0 +1,24 @@
+[remap]
+
+importer="vnen.tiled_importer"
+type="PackedScene"
+path="res://.import/TestLevel.tmx-6c18e110a6e6432fa76e1b0b7b8bc560.scn"
+
+[deps]
+
+source_file="res://levels/TestLevel.tmx"
+dest_files=[ "res://.import/TestLevel.tmx-6c18e110a6e6432fa76e1b0b7b8bc560.scn" ]
+
+[params]
+
+custom_properties=true
+tile_metadata=false
+uv_clip=true
+y_sort=true
+image_flags=7
+collision_layer=2
+collision_mask=0
+embed_internal_images=false
+save_tiled_properties=false
+add_background=true
+post_import_script=""
diff --git a/godot/levels/TestLevel.tscn b/godot/levels/TestLevel.tscn
new file mode 100644
index 0000000..b390860
--- /dev/null
+++ b/godot/levels/TestLevel.tscn
@@ -0,0 +1,77 @@
+[gd_scene load_steps=10 format=2]
+
+[ext_resource path="res://characters/enemies/blockface/Blockface.tscn" type="PackedScene" id=1]
+[ext_resource path="res://collectables/coin/Coin.tscn" type="PackedScene" id=2]
+[ext_resource path="res://goal/Goal.tscn" type="PackedScene" id=3]
+[ext_resource path="res://hud/CoinHUD.tscn" type="PackedScene" id=4]
+[ext_resource path="res://characters/player/Player.tscn" type="PackedScene" id=5]
+[ext_resource path="res://assets/music/prototype_r.ogg" type="AudioStream" id=6]
+[ext_resource path="res://assets/backgrounds/hills.png" type="Texture" id=7]
+[ext_resource path="res://levels/TestLevel.tmx" type="PackedScene" id=8]
+[ext_resource path="res://CameraLimit.gdns" type="Script" id=9]
+
+[node name="TestLevel" type="Node2D"]
+
+[node name="Player" parent="." instance=ExtResource( 5 )]
+position = Vector2( 36, 444 )
+collision_layer = 5
+
+[node name="Camera2D" type="Camera2D" parent="Player"]
+current = true
+limit_left = 0
+limit_top = 0
+limit_right = 512
+limit_bottom = 288
+drag_margin_h_enabled = true
+drag_margin_v_enabled = true
+__meta__ = {
+"_edit_bone_": true
+}
+
+[node name="VisibilityNotifier2D" type="VisibilityNotifier2D" parent="Player/Camera2D"]
+rect = Rect2( 0, 0, 24, 24 )
+
+[node name="ParallaxBackground" type="ParallaxBackground" parent="."]
+
+[node name="ParallaxLayer" type="ParallaxLayer" parent="ParallaxBackground"]
+motion_scale = Vector2( 0.2, 0.1 )
+motion_offset = Vector2( 0, -288 )
+motion_mirroring = Vector2( 528, 0 )
+
+[node name="Sprite" type="Sprite" parent="ParallaxBackground/ParallaxLayer"]
+texture = ExtResource( 7 )
+centered = false
+
+[node name="Map" type="Node2D" parent="."]
+
+[node name="TestLevel" parent="Map" instance=ExtResource( 8 )]
+script = ExtResource( 9 )
+
+[node name="CoinHUD" parent="." instance=ExtResource( 4 )]
+
+[node name="Coins" type="Node" parent="."]
+
+[node name="Coin" parent="Coins" instance=ExtResource( 2 )]
+position = Vector2( 180, 504 )
+
+[node name="Coin5" parent="Coins" instance=ExtResource( 2 )]
+position = Vector2( 243, 504 )
+
+[node name="Coin7" parent="Coins" instance=ExtResource( 2 )]
+position = Vector2( 212, 486 )
+
+[node name="Coin8" parent="Coins" instance=ExtResource( 2 )]
+position = Vector2( 450, 486 )
+
+[node name="BGM" type="AudioStreamPlayer" parent="."]
+stream = ExtResource( 6 )
+volume_db = -25.0
+autoplay = true
+
+[node name="Goal" parent="." instance=ExtResource( 3 )]
+position = Vector2( 594, 468 )
+
+[node name="Enemies" type="Node" parent="."]
+
+[node name="Blockface" parent="Enemies" instance=ExtResource( 1 )]
+position = Vector2( 342, 444 )
diff --git a/src/gui/game_over/GameOverScreen.cpp b/src/gui/game_over/GameOverScreen.cpp
index 667bb2c..92499f9 100644
--- a/src/gui/game_over/GameOverScreen.cpp
+++ b/src/gui/game_over/GameOverScreen.cpp
@@ -38,9 +38,9 @@ void alai::GameOverScreen::_ready()
 
 void alai::GameOverScreen::_on_restart_button_pressed()
 {
-    if (_resource_loader->exists("res://levels/PrototypeR.tscn"))
+    if (_resource_loader->exists("res://levels/TestLevel.tscn"))
     {
-        godot::Ref<godot::PackedScene> level_scene = _resource_loader->load("res://levels/PrototypeR.tscn");
+        godot::Ref<godot::PackedScene> level_scene = _resource_loader->load("res://levels/TestLevel.tscn");
         auto level                                 = level_scene->instance();
         auto level_node                            = get_tree()->get_root()->get_node("Main")->find_node("Level");
 

From 937e173fceadf29d58acfbb397f0ae3561801534 Mon Sep 17 00:00:00 2001
From: Martin Araneda <martix.araneda@gmail.com>
Date: Wed, 22 Feb 2023 23:12:21 -0300
Subject: [PATCH 2/3] thesis lvl fix

---
 godot/levels/TestLevel.tmx  | 72 ++++++++++++++++++-------------------
 godot/levels/TestLevel.tscn | 16 ++++-----
 2 files changed, 44 insertions(+), 44 deletions(-)

diff --git a/godot/levels/TestLevel.tmx b/godot/levels/TestLevel.tmx
index 043a072..c15493b 100644
--- a/godot/levels/TestLevel.tmx
+++ b/godot/levels/TestLevel.tmx
@@ -30,7 +30,7 @@
 0,0,0,0,0,0,0,58,59,98,59,59,59,60,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
 0,0,0,0,0,0,0,0,0,97,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
 0,0,0,0,0,0,0,0,0,117,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
-0,0,0,0,0,0,0,0,0,117,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,127,0,0,0,0,0,0,127,0,0,0,
+0,0,0,0,0,0,0,0,0,117,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
 0,0,127,89,0,0,0,0,0,138,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
@@ -39,6 +39,24 @@
  </layer>
  <layer id="1" name="Middleground" width="39" height="32">
   <data encoding="csv">
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+122,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,124,
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+122,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,124,
+122,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,123,124,
+142,143,143,143,143,143,143,143,143,143,143,143,143,143,143,143,143,143,143,143,143,143,143,143,143,143,143,143,143,143,143,143,143,143,143,143,143,143,144,
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@@ -50,27 +68,9 @@
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+23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,23,
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 </data>
  </layer>
  <layer id="3" name="Foreground" width="39" height="32">
@@ -93,20 +93,20 @@
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+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,35,0,0,0,0,35,0,0,0,35,0,0,0,0,0,0,
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+0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,55,0,0,0,0,55,0,0,0,55,0,0,0,0,0,0
 </data>
  </layer>
 </map>
diff --git a/godot/levels/TestLevel.tscn b/godot/levels/TestLevel.tscn
index b390860..d261917 100644
--- a/godot/levels/TestLevel.tscn
+++ b/godot/levels/TestLevel.tscn
@@ -1,6 +1,6 @@
 [gd_scene load_steps=10 format=2]
 
-[ext_resource path="res://characters/enemies/blockface/Blockface.tscn" type="PackedScene" id=1]
+[ext_resource path="res://characters/enemies/shelly/Shelly.tscn" type="PackedScene" id=1]
 [ext_resource path="res://collectables/coin/Coin.tscn" type="PackedScene" id=2]
 [ext_resource path="res://goal/Goal.tscn" type="PackedScene" id=3]
 [ext_resource path="res://hud/CoinHUD.tscn" type="PackedScene" id=4]
@@ -52,16 +52,16 @@ script = ExtResource( 9 )
 [node name="Coins" type="Node" parent="."]
 
 [node name="Coin" parent="Coins" instance=ExtResource( 2 )]
-position = Vector2( 180, 504 )
+position = Vector2( 144, 504 )
 
 [node name="Coin5" parent="Coins" instance=ExtResource( 2 )]
-position = Vector2( 243, 504 )
+position = Vector2( 270, 468 )
 
 [node name="Coin7" parent="Coins" instance=ExtResource( 2 )]
-position = Vector2( 212, 486 )
+position = Vector2( 216, 504 )
 
 [node name="Coin8" parent="Coins" instance=ExtResource( 2 )]
-position = Vector2( 450, 486 )
+position = Vector2( 459, 468 )
 
 [node name="BGM" type="AudioStreamPlayer" parent="."]
 stream = ExtResource( 6 )
@@ -69,9 +69,9 @@ volume_db = -25.0
 autoplay = true
 
 [node name="Goal" parent="." instance=ExtResource( 3 )]
-position = Vector2( 594, 468 )
+position = Vector2( 621, 486 )
 
 [node name="Enemies" type="Node" parent="."]
 
-[node name="Blockface" parent="Enemies" instance=ExtResource( 1 )]
-position = Vector2( 342, 444 )
+[node name="Shelly" parent="Enemies" instance=ExtResource( 1 )]
+position = Vector2( 379, 510 )

From b84ed691980194f77768484526508041f46d2de8 Mon Sep 17 00:00:00 2001
From: Chris Cromer <chris@cromer.cl>
Date: Sun, 26 Feb 2023 21:45:25 -0300
Subject: [PATCH 3/3] integrate obelisk into alai

---
 SConstruct                               |   9 +-
 godot/Main.tscn                          |   2 +-
 godot/alai.kb                            | Bin 0 -> 81920 bytes
 godot/characters/enemies/WalkingEnemy.gd |  41 ++--
 godot/characters/player/AI.gdns          |   8 +
 godot/characters/player/Player.tscn      |   6 +-
 godot/collectables/coin/Coin.gd          |   5 +
 godot/collectables/coin/Coin.tscn        |   5 +-
 godot/goal/Goal.gd                       |   5 +
 godot/goal/Goal.tscn                     |   7 +-
 godot/levels/TestLevel.tscn              |  10 +-
 obelisk/include/knowledge_base.h         | 292 +++++++++++++++++++++++
 obelisk/include/models/action.h          | 128 ++++++++++
 obelisk/include/models/entity.h          | 128 ++++++++++
 obelisk/include/models/fact.h            | 247 +++++++++++++++++++
 obelisk/include/models/rule.h            | 163 +++++++++++++
 obelisk/include/models/suggest_action.h  | 185 ++++++++++++++
 obelisk/include/models/verb.h            | 126 ++++++++++
 obelisk/include/obelisk.h                |  82 +++++++
 src/Event.cpp                            |   1 +
 src/Main.cpp                             |   5 +
 src/godot.cpp                            |   8 +-
 src/player/AI.cpp                        | 104 ++++++++
 src/player/AI.h                          |  88 +++++++
 24 files changed, 1619 insertions(+), 36 deletions(-)
 mode change 100644 => 100755 SConstruct
 create mode 100644 godot/alai.kb
 create mode 100644 godot/characters/player/AI.gdns
 create mode 100644 godot/collectables/coin/Coin.gd
 create mode 100644 godot/goal/Goal.gd
 create mode 100644 obelisk/include/knowledge_base.h
 create mode 100644 obelisk/include/models/action.h
 create mode 100644 obelisk/include/models/entity.h
 create mode 100644 obelisk/include/models/fact.h
 create mode 100644 obelisk/include/models/rule.h
 create mode 100644 obelisk/include/models/suggest_action.h
 create mode 100644 obelisk/include/models/verb.h
 create mode 100644 obelisk/include/obelisk.h
 create mode 100644 src/player/AI.cpp
 create mode 100644 src/player/AI.h

diff --git a/SConstruct b/SConstruct
old mode 100644
new mode 100755
index 27e219b..57e9f0b
--- a/SConstruct
+++ b/SConstruct
@@ -37,6 +37,9 @@ godot_headers_path = "godot-cpp/godot-headers/"
 cpp_bindings_path = "godot-cpp/"
 cpp_library = "libgodot-cpp"
 
+obelisk_bindings_path = "obelisk/"
+obelisk_library = "libobelisk"
+
 # Updates the environment with the option variables.
 opts.Update(env)
 
@@ -112,9 +115,9 @@ else:
 cpp_library += '.' + str(env['bits'])
 
 # make sure our binding library is properly includes
-env.Append(CPPPATH=['.', godot_headers_path, cpp_bindings_path + 'include/', cpp_bindings_path + 'include/core/', cpp_bindings_path + 'include/gen/'])
-env.Append(LIBPATH=[cpp_bindings_path + 'bin/'])
-env.Append(LIBS=[cpp_library])
+env.Append(CPPPATH=['.', obelisk_bindings_path + 'include/', godot_headers_path, cpp_bindings_path + 'include/', cpp_bindings_path + 'include/core/', cpp_bindings_path + 'include/gen/'])
+env.Append(LIBPATH=[cpp_bindings_path + 'bin/', obelisk_bindings_path + 'bin/'])
+env.Append(LIBS=[cpp_library, obelisk_library])
 
 # tweak this if you want to use different folders, or more folders, to store your source code in.
 env.Append(CPPPATH=['src/'])
diff --git a/godot/Main.tscn b/godot/Main.tscn
index b7e3351..2cc9a1b 100644
--- a/godot/Main.tscn
+++ b/godot/Main.tscn
@@ -8,7 +8,7 @@
 [node name="Main" type="Node"]
 pause_mode = 2
 script = ExtResource( 1 )
-game_version = "1.1.0"
+game_version = "1.0.0"
 level = ExtResource( 2 )
 
 [node name="Level" type="Node" parent="."]
diff --git a/godot/alai.kb b/godot/alai.kb
new file mode 100644
index 0000000000000000000000000000000000000000..c9d78ac69f21d5a08983b7a15cd4fbc21eb8c68b
GIT binary patch
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literal 0
HcmV?d00001

diff --git a/godot/characters/enemies/WalkingEnemy.gd b/godot/characters/enemies/WalkingEnemy.gd
index 15707dc..f3b424f 100644
--- a/godot/characters/enemies/WalkingEnemy.gd
+++ b/godot/characters/enemies/WalkingEnemy.gd
@@ -9,35 +9,36 @@ export var gravity = 9.8
 
 
 func _ready() -> void:
-	if direction == 1:
-		$AnimatedSprite.flip_h = true
-	$FloorChecker.position.x = $CollisionShape2D.shape.get_extents().x * direction
-	$FloorChecker.enabled = detect_edges
-	Event.connect("level_loaded", self, "_on_level_loaded")
+    if direction == 1:
+        $AnimatedSprite.flip_h = true
+    $FloorChecker.position.x = $CollisionShape2D.shape.get_extents().x * direction
+    $FloorChecker.enabled = detect_edges
+    Event.connect("level_loaded", self, "_on_level_loaded")
 
 
 func _physics_process(_delta: float) -> void:
-	if is_on_wall() or not $FloorChecker.is_colliding() and is_on_floor() and $FloorChecker.enabled:
-		direction *= -1
-		$AnimatedSprite.flip_h = not $AnimatedSprite.flip_h
-		$FloorChecker.position.x = $CollisionShape2D.shape.get_extents().x * direction
+    if is_on_wall() or not $FloorChecker.is_colliding() and is_on_floor() and $FloorChecker.enabled:
+        direction *= -1
+        $AnimatedSprite.flip_h = not $AnimatedSprite.flip_h
+        $FloorChecker.position.x = $CollisionShape2D.shape.get_extents().x * direction
 
-	velocity.y += gravity
-	velocity.x = speed * direction
-	velocity = move_and_slide(velocity, Vector2.UP)
+    velocity.y += gravity
+    velocity.x = speed * direction
+    velocity = move_and_slide(velocity, Vector2.UP)
 
-	for i in get_slide_count():
-		var collision = get_slide_collision(i)
-		if collision.collider.name == "Player":
-			Event.emit_signal("player_touched", 3)
+    for i in get_slide_count():
+        var collision = get_slide_collision(i)
+        if collision.collider.name == "Player":
+            Event.emit_signal("player_touched", 3)
 
-	Event.emit_signal("object_updated", self.get_name(), "Walking", global_position, velocity)
+    Event.emit_signal("object_updated", self.get_name(), "Walking", global_position, velocity)
+    Event.emit_signal("report_object", self.get_name(), "Walking", global_position, velocity)
 
 
 func squash() -> void:
-	Event.emit_signal("object_removed", self.get_name())
-	queue_free()
+    Event.emit_signal("object_removed", self.get_name())
+    queue_free()
 
 
 func _on_level_loaded() -> void:
-	Event.emit_signal("object_created", self.get_name(), "Walking", global_position, Vector2(0, 0))
+    Event.emit_signal("object_created", self.get_name(), "Walking", global_position, Vector2(0, 0))
diff --git a/godot/characters/player/AI.gdns b/godot/characters/player/AI.gdns
new file mode 100644
index 0000000..9ac28b0
--- /dev/null
+++ b/godot/characters/player/AI.gdns
@@ -0,0 +1,8 @@
+[gd_resource type="NativeScript" load_steps=2 format=2]
+
+[ext_resource path="res://gdnative/alai.tres" type="GDNativeLibrary" id=1]
+
+[resource]
+resource_name = "AI"
+class_name = "AI"
+library = ExtResource( 1 )
diff --git a/godot/characters/player/Player.tscn b/godot/characters/player/Player.tscn
index 5ac8d15..471d986 100644
--- a/godot/characters/player/Player.tscn
+++ b/godot/characters/player/Player.tscn
@@ -1,4 +1,4 @@
-[gd_scene load_steps=10 format=2]
+[gd_scene load_steps=11 format=2]
 
 [ext_resource path="res://characters/player/sprites/green.tres" type="SpriteFrames" id=1]
 [ext_resource path="res://characters/player/states/Idle.gdns" type="Script" id=2]
@@ -8,6 +8,7 @@
 [ext_resource path="res://characters/player/states/Jump.gdns" type="Script" id=6]
 [ext_resource path="res://characters/player/states/Fall.gdns" type="Script" id=7]
 [ext_resource path="res://assets/sounds/jump.wav" type="AudioStream" id=8]
+[ext_resource path="res://characters/player/AI.gdns" type="Script" id=9]
 
 [sub_resource type="RectangleShape2D" id=1]
 extents = Vector2( 7, 12 )
@@ -16,6 +17,9 @@ extents = Vector2( 7, 12 )
 collision_mask = 10
 script = ExtResource( 5 )
 
+[node name="AI" type="Node" parent="."]
+script = ExtResource( 9 )
+
 [node name="AnimatedSprite" type="AnimatedSprite" parent="."]
 frames = ExtResource( 1 )
 animation = "idle"
diff --git a/godot/collectables/coin/Coin.gd b/godot/collectables/coin/Coin.gd
new file mode 100644
index 0000000..7ab13fe
--- /dev/null
+++ b/godot/collectables/coin/Coin.gd
@@ -0,0 +1,5 @@
+extends Area2D
+
+
+func _process(_delta: float) -> void:
+    Event.emit_signal("report_object", self.get_name(), "not collected", global_position, Vector2())
diff --git a/godot/collectables/coin/Coin.tscn b/godot/collectables/coin/Coin.tscn
index 1c40bc1..7dd7f88 100644
--- a/godot/collectables/coin/Coin.tscn
+++ b/godot/collectables/coin/Coin.tscn
@@ -1,10 +1,11 @@
-[gd_scene load_steps=11 format=2]
+[gd_scene load_steps=12 format=2]
 
 [ext_resource path="res://assets/coin.png" type="Texture" id=1]
 [ext_resource path="res://state_machine/StateMachine.gdns" type="Script" id=2]
 [ext_resource path="res://collectables/coin/states/CoinNotCollected.gdns" type="Script" id=3]
 [ext_resource path="res://collectables/coin/states/CoinCollected.gdns" type="Script" id=4]
 [ext_resource path="res://assets/sounds/coin.wav" type="AudioStream" id=5]
+[ext_resource path="res://collectables/coin/Coin.gd" type="Script" id=6]
 
 [sub_resource type="CircleShape2D" id=1]
 radius = 6.0
@@ -43,6 +44,7 @@ tracks/0/keys = {
 
 [node name="Coin" type="Area2D"]
 collision_layer = 4
+script = ExtResource( 6 )
 
 [node name="CollisionShape2D" type="CollisionShape2D" parent="."]
 position = Vector2( 9, 9 )
@@ -51,7 +53,6 @@ shape = SubResource( 1 )
 [node name="AnimatedSprite" type="AnimatedSprite" parent="."]
 frames = SubResource( 4 )
 animation = "spin"
-frame = 1
 playing = true
 centered = false
 
diff --git a/godot/goal/Goal.gd b/godot/goal/Goal.gd
new file mode 100644
index 0000000..f9aa6db
--- /dev/null
+++ b/godot/goal/Goal.gd
@@ -0,0 +1,5 @@
+extends Area2D
+
+
+func _process(_delta: float) -> void:
+    Event.emit_signal("report_object", self.get_name(), "not touched", global_position, Vector2())
diff --git a/godot/goal/Goal.tscn b/godot/goal/Goal.tscn
index ee70903..e2b005a 100644
--- a/godot/goal/Goal.tscn
+++ b/godot/goal/Goal.tscn
@@ -1,9 +1,10 @@
-[gd_scene load_steps=9 format=2]
+[gd_scene load_steps=10 format=2]
 
 [ext_resource path="res://assets/flag.png" type="Texture" id=1]
 [ext_resource path="res://goal/GoalNotReached.gdns" type="Script" id=2]
 [ext_resource path="res://goal/GoalReached.gdns" type="Script" id=3]
 [ext_resource path="res://state_machine/StateMachine.gdns" type="Script" id=4]
+[ext_resource path="res://goal/Goal.gd" type="Script" id=5]
 
 [sub_resource type="RectangleShape2D" id=5]
 extents = Vector2( 10, 18 )
@@ -25,15 +26,13 @@ animations = [ {
 } ]
 
 [node name="Goal" type="Area2D"]
-position = Vector2( 324, 378 )
 collision_layer = 32
+script = ExtResource( 5 )
 
 [node name="CollisionShape2D" type="CollisionShape2D" parent="."]
-position = Vector2( 18, 18 )
 shape = SubResource( 5 )
 
 [node name="AnimatedSprite" type="AnimatedSprite" parent="."]
-position = Vector2( 18, 18 )
 frames = SubResource( 8 )
 animation = "flagmove"
 playing = true
diff --git a/godot/levels/TestLevel.tscn b/godot/levels/TestLevel.tscn
index d261917..3503d69 100644
--- a/godot/levels/TestLevel.tscn
+++ b/godot/levels/TestLevel.tscn
@@ -13,7 +13,7 @@
 [node name="TestLevel" type="Node2D"]
 
 [node name="Player" parent="." instance=ExtResource( 5 )]
-position = Vector2( 36, 444 )
+position = Vector2( 36, 498 )
 collision_layer = 5
 
 [node name="Camera2D" type="Camera2D" parent="Player"]
@@ -63,15 +63,21 @@ position = Vector2( 216, 504 )
 [node name="Coin8" parent="Coins" instance=ExtResource( 2 )]
 position = Vector2( 459, 468 )
 
+[node name="Coin9" parent="Coins" instance=ExtResource( 2 )]
+position = Vector2( 560, 468 )
+
 [node name="BGM" type="AudioStreamPlayer" parent="."]
 stream = ExtResource( 6 )
 volume_db = -25.0
 autoplay = true
 
 [node name="Goal" parent="." instance=ExtResource( 3 )]
-position = Vector2( 621, 486 )
+position = Vector2( 656, 504 )
 
 [node name="Enemies" type="Node" parent="."]
 
 [node name="Shelly" parent="Enemies" instance=ExtResource( 1 )]
 position = Vector2( 379, 510 )
+
+[node name="Shelly2" parent="Enemies" instance=ExtResource( 1 )]
+position = Vector2( 628, 510 )
diff --git a/obelisk/include/knowledge_base.h b/obelisk/include/knowledge_base.h
new file mode 100644
index 0000000..4930033
--- /dev/null
+++ b/obelisk/include/knowledge_base.h
@@ -0,0 +1,292 @@
+#ifndef OBELISK_KNOWLEDGE_BASE_H
+#define OBELISK_KNOWLEDGE_BASE_H
+
+#include "models/action.h"
+#include "models/entity.h"
+#include "models/fact.h"
+#include "models/rule.h"
+#include "models/suggest_action.h"
+#include "models/verb.h"
+
+#include <sqlite3.h>
+
+#include <functional>
+#include <iostream>
+#include <memory>
+#include <string>
+
+namespace obelisk
+{
+    /**
+     * @brief The KnowledgeBase class represents a collection of facts, rules,
+     * actions, and related language connectors.
+     *
+     */
+    class KnowledgeBase
+    {
+        private:
+            /**
+             * @brief The filename of the opened KnowledgeBase.
+             *
+             */
+            const char* filename_;
+
+            /**
+             * @brief The SQLite connection handle.
+             *
+             */
+            sqlite3* dbConnection_ = nullptr;
+
+            /**
+             * @brief The user passed flags to use when opening the database.
+             *
+             */
+            int flags_;
+
+            /**
+             * @brief Enable foreign key functionality in the open database.
+             *
+             * This must always be done when the connection is opened or it will
+             * not enforce the foreign key constraints.
+             */
+            void enableForeignKeys();
+
+            /**
+             * @brief Create the tables in the database.
+             *
+             * @param[in] function This function is called to create the table.
+             */
+            void createTable(std::function<const char*()> function);
+
+        public:
+            /**
+             * @brief Construct a new KnowledgeBase object.
+             *
+             * @param[in] filename The name of the file to save the knowledge
+             * base as.
+             * @param[in] flags The flags to open the KnowledgeBase with.
+             */
+            KnowledgeBase(const char* filename, int flags);
+
+            /**
+             * @brief Construct a new KnowledgeBase object.
+             *
+             * @param[in] filename The name of the file to save the knowledge
+             * base as.
+             */
+            KnowledgeBase(const char* filename) :
+                KnowledgeBase(filename,
+                    SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE)
+            {
+            }
+
+            /**
+             * @brief Destroy the KnowledgeBase object.
+             *
+             * This will close the opened KnowledgeBase before destroying it.
+             */
+            ~KnowledgeBase();
+
+            /**
+             * @brief Add entities to the KnowledgeBase.
+             *
+             * @param[in,out] entities The entities to add. If the insert is
+             * successful it will have a row ID, if not the ID will be 0.
+             */
+            void addEntities(std::vector<obelisk::Entity>& entities);
+
+            /**
+             * @brief Add verbs to the KnowledgeBase.
+             *
+             * @param[in,out] verbs The verbs to add. If the insert is
+             * successful it will have a row ID, if not the ID will be 0.
+             */
+            void addVerbs(std::vector<obelisk::Verb>& verbs);
+
+            /**
+             * @brief Add actions to the KnowledgeBase.
+             *
+             * @param[in,out] actions The actions to add. If the insert is
+             * successful it will have a row ID, if nto the ID will be 0.
+             */
+            void addActions(std::vector<obelisk::Action>& actions);
+
+            /**
+             * @brief Add facts to the KnowledgeBase.
+             *
+             * @param[in,out] facts The facts to add. If the insert is
+             * successful it will have a row ID, if not the ID will be 0.
+             */
+            void addFacts(std::vector<obelisk::Fact>& facts);
+
+            /**
+             * @brief Add suggested actions to the KnowledgeBase.
+             *
+             * @param[in,out] suggestActions The suggested actions to add. If
+             * the insert is successful it will have a row ID, if not the ID
+             * will be 0.
+             */
+            void addSuggestActions(
+                std::vector<obelisk::SuggestAction>& suggestActions);
+
+            /**
+             * @brief Add rules to the KnowledgeBase.
+             *
+             * @param[in,out] rules The rules to add. If the insert is
+             * successful it will have a row ID, if not the ID will be 0.
+             */
+            void addRules(std::vector<obelisk::Rule>& rules);
+
+            /**
+             * @brief Get an Entity object based on the ID it contains.
+             *
+             * @param[in,out] entity The Entity object should contain just the
+             * ID and the rest will be filled in.
+             */
+            void getEntity(obelisk::Entity& entity);
+
+            /**
+             * @brief Get a Verb object based on the ID it contains.
+             *
+             * @param[in,out] verb The Verb object should contain just the ID
+             * and the rest will be filled in.
+             */
+            void getVerb(obelisk::Verb& verb);
+
+            /**
+             * @brief Get an Action based on the ID it contains.
+             *
+             * @param[in] action The Action object should contain just the ID
+             * and the rest will be filled in.
+             */
+            void getAction(obelisk::Action& action);
+
+            /**
+             * @brief Get a Fact object based on the ID it contains.
+             *
+             * @param[in,out] fact The Fact object should contain just the ID
+             * and the rest will be filled in.
+             */
+            void getFact(obelisk::Fact& fact);
+
+            /**
+             * @brief Get a SuggestAction based on the ID it contains.
+             *
+             * @param[in,out] suggestAction The SuggestAction object should
+             * contain just the ID and the rest will be filled in.
+             */
+            void getSuggestAction(obelisk::SuggestAction& suggestAction);
+
+            /**
+             * @brief Get a Rule based on the ID it contains.
+             *
+             * @param[in,out] rule The Rule object should  contain just the ID
+             * and the rest will be filled in.
+             */
+            void getRule(obelisk::Rule& rule);
+
+            /**
+             * @brief Check if a rule looks for this Fact, if so update its
+             * truth.
+             *
+             * @param[in,out] fact The Fact to check for existing rules.
+             */
+            void checkRule(obelisk::Fact& fact);
+
+            /**
+             * @brief Update the is true field in the KnowledgeBase.
+             *
+             * @param[in,out] fact The fact to update.
+             */
+            void updateIsTrue(obelisk::Fact& fact);
+
+            /**
+             * @brief Query the KnowledgeBase to see if a Fact is true or false.
+             *
+             * @param[in] fact The Fact to check.
+             */
+            void queryFact(obelisk::Fact& fact);
+
+            /**
+             * @brief Query the KnowledgeBase to get a suggested action based
+             * on a Fact.
+             * If a SuggestAction doesn't exist, it will return an empty Action.
+             *
+             * @param[in] fact The Fact to search for.
+             * @param[out] action The Action that is suggested to take.
+             */
+            void querySuggestAction(obelisk::Fact& fact,
+                obelisk::Action& action);
+
+            /**
+             * @brief Take a float and divide it into 2 floats.
+             *
+             * This is useful to store doubles in SQLite since SQLite doesn't
+             * have a double type. Instead just store the 2 floats in the
+             * database. Then after selecting them combine them.
+             *
+             * @param[out] result1 The first float generated from the double.
+             * @param[out] result2 The second float generated from the double.
+             * @param[in] var The double to split into the 2 floats.
+             */
+            void getFloat(float& result1, float& result2, double var);
+
+            /**
+             * @brief Combines 2 separated floats back into a double.
+             *
+             * This will recombine the separated floats from the getFloat
+             * method.
+             *
+             * @param[out] result The double generated from the combined floats.
+             * @param[in] var1 The first float to combine.
+             * @param[in] var2 The second float to combine.
+             */
+            void getDouble(double& result, float var1, float var2);
+    };
+
+    /**
+     * @brief Exception thrown by the KnowledgeBase.
+     *
+     */
+    class KnowledgeBaseException : public std::exception
+    {
+        private:
+            /**
+             * @brief The error message given.
+             *
+             */
+            const std::string errorMessage_;
+
+        public:
+            /**
+             * @brief Construct a new KnowledgeBaseException object.
+             *
+             */
+            KnowledgeBaseException() :
+                errorMessage_("an unknown error ocurred")
+            {
+            }
+
+            /**
+             * @brief Construct a new KnowledgeBaseException object.
+             *
+             * @param[in] errorMessage The error message given when thrown.
+             */
+            KnowledgeBaseException(const std::string& errorMessage) :
+                errorMessage_(errorMessage)
+            {
+            }
+
+            /**
+             * @brief Get the error message that occurred.
+             *
+             * @return const char* Returns the error message.
+             */
+            const char* what() const noexcept
+            {
+                return errorMessage_.c_str();
+            }
+    };
+} // namespace obelisk
+
+#endif
diff --git a/obelisk/include/models/action.h b/obelisk/include/models/action.h
new file mode 100644
index 0000000..2d06c03
--- /dev/null
+++ b/obelisk/include/models/action.h
@@ -0,0 +1,128 @@
+#ifndef OBELISK_MODELS_ACTION_H
+#define OBELISK_MODELS_ACTION_H
+
+#include <sqlite3.h>
+
+#include <string>
+
+namespace obelisk
+{
+    /**
+     * @brief The Action model represents an action to take when a fact is true
+     * or false.
+     *
+     */
+    class Action
+    {
+        private:
+            /**
+             * @brief The ID of the Action in the KnowledgeBase.
+             *
+             */
+            int id_;
+
+            /**
+             * @brief The name of the Action.
+             *
+             */
+            std::string name_;
+
+        public:
+            /**
+             * @brief Construct a new Action object.
+             *
+             */
+            Action() :
+                id_(0),
+                name_("")
+            {
+            }
+
+            /**
+             * @brief Construct a new Action object.
+             *
+             * @param[in] id The ID of the Action.
+             */
+            Action(int id) :
+                id_(id),
+                name_("")
+            {
+            }
+
+            /**
+             * @brief Construct a new Action object.
+             *
+             * @param[in] name The name of the Action.
+             */
+            Action(std::string name) :
+                id_(0),
+                name_(name)
+            {
+            }
+
+            /**
+             * @brief Construct a new Action object.
+             *
+             * @param[in] id The ID of the Action.
+             * @param[in] name The name of the Action.
+             */
+            Action(int id, std::string name) :
+                id_(id),
+                name_(name)
+            {
+            }
+
+            /**
+             * @brief Create the Action table in the KnowledgeBase.
+             *
+             * @return const char* Returns the query used to create the table.
+             */
+            static const char* createTable();
+
+            /**
+             * @brief Get the ID of the Action.
+             *
+             * @return int& Returns the ID.
+             */
+            int& getId();
+
+            /**
+             * @brief Set the ID of the Action.
+             *
+             * @param[in] id Set the ID of the Action.
+             */
+            void setId(int id);
+
+            /**
+             * @brief Get the name of the Action.
+             *
+             * @return std::string& The Action name.
+             */
+            std::string& getName();
+
+            /**
+             * @brief Set the name of the Action.
+             *
+             * @param[in] name The name of the Action.
+             */
+            void setName(std::string name);
+
+            /**
+             * @brief Select an Action from the datbase based on the object
+             * name.
+             *
+             * @param[in] dbConnection The database connection to use.
+             */
+            void selectByName(sqlite3* dbConnection);
+
+            /**
+             * @brief Insert an Action into the KnowledgeBase based on the
+             * object's fields.
+             *
+             * @param[in] dbConnection The database connection to use.
+             */
+            void insert(sqlite3* dbConnection);
+    };
+} // namespace obelisk
+
+#endif
diff --git a/obelisk/include/models/entity.h b/obelisk/include/models/entity.h
new file mode 100644
index 0000000..0241575
--- /dev/null
+++ b/obelisk/include/models/entity.h
@@ -0,0 +1,128 @@
+#ifndef OBELISK_MODELS_ENTITY_H
+#define OBELISK_MODELS_ENTITY_H
+
+#include <sqlite3.h>
+
+#include <string>
+
+namespace obelisk
+{
+    /**
+     * @brief The Entity model represents either a left or right side entity,
+     * typically used in facts and rules.
+     *
+     */
+    class Entity
+    {
+        private:
+            /**
+             * @brief The ID of the Entity in the KnowledgeBase.
+             *
+             */
+            int id_;
+
+            /**
+             * @brief The name of the Entity.
+             *
+             */
+            std::string name_;
+
+        public:
+            /**
+             * @brief Construct a new Entity object.
+             *
+             */
+            Entity() :
+                id_(0),
+                name_("")
+            {
+            }
+
+            /**
+             * @brief Construct a new Entity object.
+             *
+             * @param[in] id The ID of the Entity.
+             */
+            Entity(int id) :
+                id_(id),
+                name_("")
+            {
+            }
+
+            /**
+             * @brief Construct a new Entity object.
+             *
+             * @param[in] name The name of the Entity.
+             */
+            Entity(std::string name) :
+                id_(0),
+                name_(name)
+            {
+            }
+
+            /**
+             * @brief Construct a new Entity object.
+             *
+             * @param[in] id The ID of the Entity.
+             * @param[in] name The name of the Entity.
+             */
+            Entity(int id, std::string name) :
+                id_(id),
+                name_(name)
+            {
+            }
+
+            /**
+             * @brief Create the table in the KnowledgeBase.
+             *
+             * @return const char* Returns the query used to create the table.
+             */
+            static const char* createTable();
+
+            /**
+             * @brief Get the ID of the Entity.
+             *
+             * @return int& Returns the ID.
+             */
+            int& getId();
+
+            /**
+             * @brief Set the ID of the Entity.
+             *
+             * @param[in] id The ID of the Entity.
+             */
+            void setId(int id);
+
+            /**
+             * @brief Get the name of the Entity.
+             *
+             * @return std::string& The name of the Entity.
+             */
+            std::string& getName();
+
+            /**
+             * @brief Set the name of the Entity.
+             *
+             * @param[in] name The name of the Entity.
+             */
+            void setName(std::string name);
+
+            /**
+             * @brief Select an Entity from the KnowledgeBase based on the
+             * object's name.
+             *
+             * @param[in] dbConnection The database connection to use.
+             */
+            void selectByName(sqlite3* dbConnection);
+
+            /**
+             * @brief Insert an Entity into the KnowledgeBase based on the
+             * object's fields.
+             *
+             * @param[in] dbConnection The database connection to use.
+             */
+            void insert(sqlite3* dbConnection);
+    };
+} // namespace obelisk
+
+#endif
diff --git a/obelisk/include/models/fact.h b/obelisk/include/models/fact.h
new file mode 100644
index 0000000..21810b2
--- /dev/null
+++ b/obelisk/include/models/fact.h
@@ -0,0 +1,247 @@
+#ifndef OBELISK_MODELS_FACT_H
+#define OBELISK_MODELS_FACT_H
+
+#include "models/action.h"
+#include "models/entity.h"
+#include "models/fact.h"
+#include "models/verb.h"
+
+#include <string>
+
+namespace obelisk
+{
+    /**
+     * @brief The Fact model represents truth in the releationship between two
+     * entities separated by a verb.
+     *
+     */
+    class Fact
+    {
+        private:
+            /**
+             * @brief The ID of the Fact in the KnowledgeBase.
+             *
+             */
+            int id_;
+
+            /**
+             * @brief The Entity from the left side of the expression.
+             *
+             */
+            obelisk::Entity leftEntity_;
+
+            /**
+             * @brief The Entity from the right side of the expression.
+             *
+             */
+            obelisk::Entity rightEntity_;
+
+            /**
+             * @brief The Verb that represents the relationship in the
+             * expression.
+             *
+             */
+            obelisk::Verb verb_;
+
+            /**
+             * @brief Whether or not the fact is considered true or not.
+             *
+             */
+            double isTrue_;
+
+        public:
+            /**
+             * @brief Construct a new Fact object.
+             *
+             */
+            Fact() :
+                id_(0),
+                leftEntity_(),
+                rightEntity_(),
+                verb_(),
+                isTrue_(0)
+            {
+            }
+
+            /**
+             * @brief Construct a new Fact object.
+             *
+             * @param[in] id The ID of the Fact in the KnowledgeBase.
+             */
+            Fact(int id) :
+                id_(id),
+                leftEntity_(),
+                rightEntity_(),
+                verb_(),
+                isTrue_(0)
+            {
+            }
+
+            /**
+             * @brief Construct a new Fact object.
+             *
+             * @param[in] leftEntity The Entity on the left side of the
+             * expression.
+             * @param[in] rightEntity The Entity on the right side of the
+             * expression.
+             * @param[in] verb The Verb separating the entities.
+             * @param[in] isTrue Whether or not the fact is true.
+             */
+            Fact(obelisk::Entity leftEntity,
+                obelisk::Entity rightEntity,
+                obelisk::Verb verb,
+                double isTrue = 0) :
+                id_(0),
+                leftEntity_(leftEntity),
+                rightEntity_(rightEntity),
+                verb_(verb),
+                isTrue_(isTrue)
+            {
+            }
+
+            /**
+             * @brief Construct a new Fact object.
+             *
+             * @param[in] id The ID of the Fact in the KnowledgeBase.
+             * @param[in] leftEntity The Entity on the left side of the
+             * expression.
+             * @param[in] rightEntity The Entity on the right side of the
+             * expression.
+             * @param[in] verb The Verb separating the entities.
+             * @param[in] isTrue Whether or not the fact is true.
+             */
+            Fact(int id,
+                obelisk::Entity leftEntity,
+                obelisk::Entity rightEntity,
+                obelisk::Verb verb,
+                double isTrue = 0) :
+                id_(id),
+                leftEntity_(leftEntity),
+                rightEntity_(rightEntity),
+                verb_(verb),
+                isTrue_(isTrue)
+            {
+            }
+
+            /**
+             * @brief Create the Fact table in the KnowledgeBase.
+             *
+             * @return const char* Returns the query used to create the table.
+             */
+            static const char* createTable();
+
+            /**
+             * @brief Get the ID of the Fact
+             *
+             * @return int& Returns the ID.
+             */
+            int& getId();
+
+            /**
+             * @brief Set the ID of the Fact.
+             *
+             * @param[in] id Set the ID of the Fact.
+             */
+            void setId(int id);
+
+            /**
+             * @brief Get the left Entity object.
+             *
+             * @return Entity& The left Entity.
+             */
+            Entity& getLeftEntity();
+
+            /**
+             * @brief Set the left Entity object.
+             *
+             * @param[in] leftEntity The left Entity to set.
+             */
+            void setLeftEntity(obelisk::Entity leftEntity);
+
+            /**
+             * @brief Get the right Entity object.
+             *
+             * @return Entity& The right Entity.
+             */
+            Entity& getRightEntity();
+
+            /**
+             * @brief Set the right Entity object.
+             *
+             * @param[in] rightEntity The right Entity to set.
+             */
+            void setRightEntity(obelisk::Entity rightEntity);
+
+            /**
+             * @brief Get the Verb object.
+             *
+             * @return Verb& The Verb.
+             */
+            Verb& getVerb();
+
+            /**
+             * @brief Set the Verb object.
+             *
+             * @param[in] verb The Verb.
+             */
+            void setVerb(obelisk::Verb verb);
+
+            /**
+             * @brief Gets the isTrue value.
+             *
+             * @return true If the Fact is considered true.
+             * @return false If the Fact is considered false.
+             */
+            double& getIsTrue();
+
+            /**
+             * @brief Set the Fact as true or false.
+             *
+             * @param[in] isTrue Whether or not the Fact is true.
+             */
+            void setIsTrue(double isTrue);
+
+            /**
+             * @brief Select the Fact from the KnowledgeBase by IDs of the
+             * sub-objects.
+             *
+             * @param[in] dbConnection The database connection to use.
+             */
+            void selectById(sqlite3* dbConnection);
+
+            /**
+             * @brief Select the Fact from the KnowledgeBase by the name's of
+             * the entities and verb.
+             *
+             * @param[in] dbConnection The database connection to use.
+             */
+            void selectByName(sqlite3* dbConnection);
+
+            /**
+             * @brief Select an Action from the KnowledgeBase using the provided
+             * Fact.
+             *
+             * @param[in] dbConnection The database connection to use.
+             * @param[out] action The Action to take based on the provided fact.
+             */
+            void selectActionByFact(sqlite3* dbConnection,
+                obelisk::Action& action);
+
+            /**
+             * @brief Insert the Fact into the KnowledgeBase.
+             *
+             * @param[in] dbConnection The database connection to use.
+             */
+            void insert(sqlite3* dbConnection);
+
+            /**
+             * @brief Update whether or not the fact is true in the
+             * KnowledgeBase.
+             *
+             * @param[in] dbConnection The database connection.
+             */
+            void updateIsTrue(sqlite3* dbConnection);
+    };
+} // namespace obelisk
+
+#endif
diff --git a/obelisk/include/models/rule.h b/obelisk/include/models/rule.h
new file mode 100644
index 0000000..efbdced
--- /dev/null
+++ b/obelisk/include/models/rule.h
@@ -0,0 +1,163 @@
+#ifndef OBELISK_MODELS_RULE_H
+#define OBELISK_MODELS_RULE_H
+
+#include "models/fact.h"
+
+#include <string>
+#include <vector>
+
+namespace obelisk
+{
+    /**
+     * @brief The Rule model represents a truth relation between 2 Facts.
+     *
+     */
+    class Rule
+    {
+        private:
+            /**
+             * @brief The ID of the Rule in the KnowledgeBase.
+             *
+             */
+            int id_;
+
+            /**
+             * @brief The Fact that depends on the Fact reason being true.
+             *
+             */
+            obelisk::Fact fact_;
+
+            /**
+             * @brief The Fact that makes the other Fact true or false.
+             *
+             */
+            obelisk::Fact reason_;
+
+        public:
+            /**
+             * @brief Construct a new Rule object.
+             *
+             */
+            Rule() :
+                id_(0),
+                fact_(),
+                reason_()
+            {
+            }
+
+            /**
+             * @brief Construct a new Rule object.
+             *
+             * @param[in] id The ID of the Rule in the KnowledgeBase.
+             */
+            Rule(int id) :
+                id_(id),
+                fact_(),
+                reason_()
+            {
+            }
+
+            /**
+             * @brief Construct a new Rule object.
+             *
+             * @param[in] fact The Fact.
+             * @param[in] reason The reason Fact.
+             */
+            Rule(obelisk::Fact fact, obelisk::Fact reason) :
+                id_(0),
+                fact_(fact),
+                reason_(reason)
+            {
+            }
+
+            /**
+             * @brief Construct a new Rule object.
+             *
+             * @param[in] id The ID of the Rule.
+             * @param[in] fact The Fact.
+             * @param[in] reason The reason Fact.
+             */
+            Rule(int id, obelisk::Fact fact, obelisk::Fact reason) :
+                id_(id),
+                fact_(fact),
+                reason_(reason)
+            {
+            }
+
+            /**
+             * @brief Create the Rule table in the KnowledgeBase.
+             *
+             * @return const char* Returns the query used to create the table.
+             */
+            static const char* createTable();
+
+            /**
+             * @brief Get the ID of the Rule.
+             *
+             * @return int& The ID.
+             */
+            int& getId();
+
+            /**
+             * @brief Set the ID of the Rule.
+             *
+             * @param[in] id The ID.
+             */
+            void setId(int id);
+
+            /**
+             * @brief Get the Fact object.
+             *
+             * @return obelisk::Fact& The Fact.
+             */
+            obelisk::Fact& getFact();
+
+            /**
+             * @brief Set the Fact object.
+             *
+             * @param[in] fact The Fact.
+             */
+            void setFact(obelisk::Fact fact);
+
+            /**
+             * @brief Get the reason Fact object.
+             *
+             * @return obelisk::Fact& The reason Fact.
+             */
+            obelisk::Fact& getReason();
+
+            /**
+             * @brief Set the reason Fact object.
+             *
+             * @param[in] reason The reason Fact.
+             */
+            void setReason(obelisk::Fact reason);
+
+            /**
+             * @brief Select the Rule from the KnowledgeBase by IDs of the
+             * sub-objects.
+             *
+             * @param[in] dbConnection The database connection to use.
+             */
+            void selectById(sqlite3* dbConnection);
+
+            /**
+             * @brief Get the rules that match the reason.
+             *
+             * @param[in] dbConnection The database connection to use.
+             * @param[out] rules The rules to fill in from the database.
+             */
+            static void selectByReason(sqlite3* dbConnection,
+                int reasonId,
+                std::vector<obelisk::Rule>& rules);
+
+            /**
+             * @brief Insert the Rule into the KnowledgeBase.
+             *
+             * @param[in] dbConnection The database connection to use.
+             */
+            void insert(sqlite3* dbConnection);
+    };
+} // namespace obelisk
+
+#endif
diff --git a/obelisk/include/models/suggest_action.h b/obelisk/include/models/suggest_action.h
new file mode 100644
index 0000000..16d123e
--- /dev/null
+++ b/obelisk/include/models/suggest_action.h
@@ -0,0 +1,185 @@
+#ifndef OBELISK_MODELS_SUGGEST_ACTION_H
+#define OBELISK_MODELS_SUGGEST_ACTION_H
+
+#include "models/action.h"
+#include "models/fact.h"
+
+#include <string>
+
+namespace obelisk
+{
+    /**
+     * @brief The SuggestAction model representas the actions to take depending
+     * on if the Fact is true or false.
+     *
+     */
+    class SuggestAction
+    {
+        private:
+            /**
+             * @brief The ID of the SuggestAction.
+             *
+             */
+            int id_;
+
+            /**
+             * @brief The Fact to check the truth of.
+             *
+             */
+            obelisk::Fact fact_;
+
+            /**
+             * @brief The Action to take if the Fact is true.
+             *
+             */
+            obelisk::Action trueAction_;
+
+            /**
+             * @brief The Action to take if the Fact is false.
+             *
+             */
+            obelisk::Action falseAction_;
+
+        public:
+            /**
+             * @brief Construct a new SuggestAction object.
+             *
+             */
+            SuggestAction() :
+                id_(0),
+                fact_(),
+                trueAction_(),
+                falseAction_()
+            {
+            }
+
+            /**
+             * @brief Construct a new SuggestAction object.
+             *
+             * @param[in] id The ID of the SuggestAction in the KnowledgeBase.
+             */
+            SuggestAction(int id) :
+                id_(id),
+                fact_(),
+                trueAction_(),
+                falseAction_()
+            {
+            }
+
+            /**
+             * @brief Construct a new SuggestAction object.
+             *
+             * @param[in] fact The Fact.
+             * @param[in] trueAction The true Action.
+             * @param[in] falseAction The false Action.
+             */
+            SuggestAction(obelisk::Fact fact,
+                obelisk::Action trueAction,
+                obelisk::Action falseAction) :
+                id_(0),
+                fact_(fact),
+                trueAction_(trueAction),
+                falseAction_(falseAction)
+            {
+            }
+
+            /**
+             * @brief Construct a new SuggestAction object.
+             *
+             * @param[in] id The ID of the SuggestAction in the KnowledgeBase.
+             * @param[in] fact The Fact.
+             * @param[in] trueAction The true Action.
+             * @param[in] falseAction The false Action.
+             */
+            SuggestAction(int id,
+                obelisk::Fact fact,
+                obelisk::Action trueAction,
+                obelisk::Action falseAction) :
+                id_(id),
+                fact_(fact),
+                trueAction_(trueAction),
+                falseAction_(falseAction)
+            {
+            }
+
+            /**
+             * @brief Create the SuggestAction table in the database.
+             *
+             * @return const char* Returns the query used to create the table.
+             */
+            static const char* createTable();
+
+            /**
+             * @brief Get the ID of the SuggestAction.
+             *
+             * @return int& Returns the ID.
+             */
+            int& getId();
+
+            /**
+             * @brief Set the ID of the SuggestAction.
+             *
+             * @param[in] id The new ID.
+             */
+            void setId(int id);
+
+            /**
+             * @brief Get the Fact object.
+             *
+             * @return obelisk::Fact& Returns the Fact.
+             */
+            obelisk::Fact& getFact();
+
+            /**
+             * @brief Set the Fact object.
+             *
+             * @param[in] fact The new Fact.
+             */
+            void setFact(obelisk::Fact fact);
+
+            /**
+             * @brief Get the true Action object.
+             *
+             * @return obelisk::Action& Returns the true Action.
+             */
+            obelisk::Action& getTrueAction();
+
+            /**
+             * @brief Set the true Action object.
+             *
+             * @param[in] trueAction The new true Action.
+             */
+            void setTrueAction(obelisk::Action trueAction);
+
+            /**
+             * @brief Get the false Action object.
+             *
+             * @return obelisk::Action& Returns the false Action.
+             */
+            obelisk::Action& getFalseAction();
+
+            /**
+             * @brief Set the false Action object.
+             *
+             * @param[in] falseAction The new false Action.
+             */
+            void setFalseAction(obelisk::Action falseAction);
+
+            /**
+             * @brief Select the SuggestAction from the KnowledgeBase by IDs of
+             * the sub-objects.
+             *
+             * @param[in] dbConnection The database connection to use.
+             */
+            void selectById(sqlite3* dbConnection);
+
+            /**
+             * @brief Insert the SuggestAction into the KnowledgeBase.
+             *
+             * @param[in] dbConnection The database connection to use.
+             */
+            void insert(sqlite3* dbConnection);
+    };
+} // namespace obelisk
+
+#endif
diff --git a/obelisk/include/models/verb.h b/obelisk/include/models/verb.h
new file mode 100644
index 0000000..150e86f
--- /dev/null
+++ b/obelisk/include/models/verb.h
@@ -0,0 +1,126 @@
+#ifndef OBELISK_MODELS_VERB_H
+#define OBELISK_MODELS_VERB_H
+
+#include <sqlite3.h>
+
+#include <string>
+
+namespace obelisk
+{
+    /**
+     * @brief The Verb model represents a verb which is used to connnect
+     * entities.
+     *
+     */
+    class Verb
+    {
+        private:
+            /**
+             * @brief The ID of the Verb in the KnowledgeBase.
+             *
+             */
+            int id_;
+
+            /**
+             * @brief The name of the Verb.
+             *
+             */
+            std::string name_;
+
+        public:
+            /**
+             * @brief Construct a new Verb object.
+             *
+             */
+            Verb() :
+                id_(0),
+                name_("")
+            {
+            }
+
+            /**
+             * @brief Construct a new Verb object.
+             *
+             * @param[in] id The ID of the Verb.
+             */
+            Verb(int id) :
+                id_(id),
+                name_("")
+            {
+            }
+
+            /**
+             * @brief Construct a new Verb object.
+             *
+             * @param[in] name The name of the Verb.
+             */
+            Verb(std::string name) :
+                id_(0),
+                name_(name)
+            {
+            }
+
+            /**
+             * @brief Construct a new Verb object.
+             *
+             * @param[in] id The ID of the Verb.
+             * @param[in] name The name of the Verb.
+             */
+            Verb(int id, std::string name) :
+                id_(id),
+                name_(name)
+            {
+            }
+
+            /**
+             * @brief Create the Verb table in the KnowledgeBase.
+             *
+             * @return const char* Returns the query used to create the table.
+             */
+            static const char* createTable();
+
+            /**
+             * @brief Get the ID of the Verb.
+             *
+             * @return int& Returns the ID.
+             */
+            int& getId();
+
+            /**
+             * @brief Set the ID of the Verb.
+             *
+             * @param[in] id Set the ID of the Verb.
+             */
+            void setId(int id);
+
+            /**
+             * @brief Get the name of the Verb.
+             *
+             * @return std::string& The Verb name.
+             */
+            std::string& getName();
+
+            /**
+             * @brief Set the name of the Verb.
+             *
+             * @param[in] name The Verb name.
+             */
+            void setName(std::string name);
+
+            /**
+             * @brief Select a verb by name from the KnowledgeBase.
+             *
+             * @param[in] dbConnection The database connection to use.
+             */
+            void selectByName(sqlite3* dbConnection);
+
+            /**
+             * @brief Insert a new verb into the KnowledgeBase.
+             *
+             * @param[in] dbConnection The database connection to use.
+             */
+            void insert(sqlite3* dbConnection);
+    };
+} // namespace obelisk
+
+#endif
diff --git a/obelisk/include/obelisk.h b/obelisk/include/obelisk.h
new file mode 100644
index 0000000..1e434bc
--- /dev/null
+++ b/obelisk/include/obelisk.h
@@ -0,0 +1,82 @@
+#ifndef OBELISK_INCLUDE_OBELISK_H
+#define OBELISK_INCLUDE_OBELISK_H
+
+#include "knowledge_base.h"
+
+#include <memory>
+#include <string>
+
+/**
+ * @brief The obelisk namespace contains everything needed to compile obelisk
+ * code.
+ *
+ */
+namespace obelisk
+{
+    /**
+     * @brief The obelisk library provides everything needed to consult the
+     * KnowledgeBase.
+     *
+     */
+    class Obelisk
+    {
+        private:
+            std::unique_ptr<obelisk::KnowledgeBase> kb_;
+
+        public:
+            /**
+             * @brief Construct a new Obelisk object.
+             *
+             */
+            Obelisk(std::string filename);
+
+            /**
+             * @brief Destroy the Obelisk object.
+             *
+             */
+            ~Obelisk() = default;
+
+            /**
+             * @brief Get the obelisk version.
+             *
+             * @return std::string The version.
+             */
+            std::string getVersion();
+
+            /**
+             * @brief Get the obelisk library so version.
+             *
+             * @return int The version.
+             */
+            int getLibVersion();
+
+            /**
+             * @brief Query the obelisk KnowledgeBase to see if a Fact is true
+             * or not.
+             *
+             * @param[in] p_obelisk The obelisk object pointer.
+             * @param[in] left_entity The left entity.
+             * @param[in] verb The verb.
+             * @param[in] right_entity The right entity.
+             * @return double Returns whether or not the Fact is true.
+             */
+            double query(const std::string& leftEntity,
+                const std::string& verb,
+                const std::string& rightEntity);
+
+            /**
+             * @brief Query the Obelisk KnowledgeBase and return the suggested
+             * action to take.
+             *
+             * @param[in] leftEntity The left entity.
+             * @param[in] verb The verb.
+             * @param[in] rightEntity The right entity.
+             * @return std::string Returns the suggested action.
+             */
+            std::string queryAction(const std::string& leftEntity,
+                const std::string& verb,
+                const std::string& rightEntity);
+    };
+} // namespace obelisk
+
+#endif
diff --git a/src/Event.cpp b/src/Event.cpp
index cd762b0..26b0efc 100644
--- a/src/Event.cpp
+++ b/src/Event.cpp
@@ -12,6 +12,7 @@ void alai::Event::_register_methods()
     godot::register_signal<Event>("player_died");
     godot::register_signal<Event>("player_won");
     godot::register_signal<Event>("player_touched", "damage", GODOT_VARIANT_TYPE_INT);
+    godot::register_signal<Event>("report_object", "name", GODOT_VARIANT_TYPE_STRING, "state", GODOT_VARIANT_TYPE_STRING, "position", GODOT_VARIANT_TYPE_VECTOR2, "velocity", GODOT_VARIANT_TYPE_VECTOR2);
 }
 
 alai::Event::Event()
diff --git a/src/Main.cpp b/src/Main.cpp
index f6f1341..0059a96 100644
--- a/src/Main.cpp
+++ b/src/Main.cpp
@@ -1,5 +1,6 @@
 #include "Event.h"
 #include "Main.h"
+#include "obelisk.h"
 
 #include <SceneTree.hpp>
 
@@ -39,6 +40,10 @@ void alai::Main::_init()
 
 void alai::Main::_ready()
 {
+    auto obelisk = std::unique_ptr<obelisk::Obelisk> {new obelisk::Obelisk("alai.kb")};
+    godot::Godot::print("Obelisk version: " + godot::String(obelisk->getVersion().c_str()));
+    godot::Godot::print("Obelisk library version: " + godot::String(std::to_string(obelisk->getLibVersion()).c_str()));
+
     auto success = _project_settings->load_resource_pack("monitor.pck");
     if (success)
     {
diff --git a/src/godot.cpp b/src/godot.cpp
index d0835f3..8e07724 100644
--- a/src/godot.cpp
+++ b/src/godot.cpp
@@ -8,6 +8,7 @@
 #include "goal/GoalReached.h"
 #include "gui/game_over/GameOverScreen.h"
 #include "gui/game_won/GameWonScreen.h"
+#include "player/AI.h"
 #include "player/Player.h"
 #include "player/states/PlayerFall.h"
 #include "player/states/PlayerIdle.h"
@@ -20,7 +21,7 @@
 
 /**
  * @brief This function connects the gdnative init function.
- * 
+ *
  */
 extern "C" void GDN_EXPORT godot_gdnative_init(godot_gdnative_init_options *o)
 {
@@ -29,7 +30,7 @@ extern "C" void GDN_EXPORT godot_gdnative_init(godot_gdnative_init_options *o)
 
 /**
  * @brief This function connects the gdnative terminate function.
- * 
+ *
  */
 extern "C" void GDN_EXPORT godot_gdnative_terminate(godot_gdnative_terminate_options *o)
 {
@@ -41,7 +42,7 @@ extern "C" void GDN_EXPORT godot_gdnative_terminate(godot_gdnative_terminate_opt
 
 /**
  * @brief This function connects the init methods in the classes to godot's gdnative.
- * 
+ *
  */
 extern "C" void GDN_EXPORT godot_nativescript_init(void *handle)
 {
@@ -53,6 +54,7 @@ extern "C" void GDN_EXPORT godot_nativescript_init(void *handle)
     godot::register_class<alai::Main>();
     godot::register_class<alai::CameraLimit>();
     godot::register_class<alai::player::Player>();
+    godot::register_class<alai::player::AI>();
     godot::register_class<alai::player::PlayerIdle>();
     godot::register_class<alai::player::PlayerMove>();
     godot::register_class<alai::player::PlayerJump>();
diff --git a/src/player/AI.cpp b/src/player/AI.cpp
new file mode 100644
index 0000000..d667bf0
--- /dev/null
+++ b/src/player/AI.cpp
@@ -0,0 +1,104 @@
+#include "player/AI.h"
+
+void alai::player::AI::_register_methods()
+{
+    godot::register_method("_ready", &AI::_ready);
+    godot::register_method("_physics_process", &AI::_physics_process);
+    godot::register_method("_on_object_report", &AI::_on_object_report);
+}
+
+alai::player::AI::AI()
+{
+}
+
+alai::player::AI::~AI()
+{
+}
+
+void alai::player::AI::_init()
+{
+    _input  = godot::Input::get_singleton();
+    obelisk = std::unique_ptr<obelisk::Obelisk> {new obelisk::Obelisk("alai.kb")};
+}
+
+void alai::player::AI::_ready()
+{
+    parent = Object::cast_to<Player>(get_parent());
+
+    event = get_node<alai::Event>("/root/Event");
+    event->connect("report_object", this, "_on_object_report");
+}
+
+void alai::player::AI::_physics_process(float delta)
+{
+    while (!entities.empty())
+    {
+        const auto& entity = entities.front();
+
+        if (obelisk->query(entity.name.utf8().get_data(), "is", "touchable") > 0)
+        {
+            auto player_position = parent->get_global_position();
+            if (entity.position.x > player_position.x)
+            {
+                _input->action_press("right");
+            }
+            else
+            {
+                _input->action_press("left");
+            }
+        }
+
+        if (obelisk->query(entity.name.utf8().get_data(), "is", "bouncable") > 0)
+        {
+            auto player_position = parent->get_global_position();
+            auto distance        = sqrt(pow(player_position.x - entity.position.x, 2) + pow(player_position.y - entity.position.y, 2));
+            int jump_distance    = 0;
+
+            auto player_direction = parent->get_velocity();
+
+            auto action = obelisk->queryAction(entity.name.utf8().get_data(), "is", "bouncable");
+            if (action == "jump on")
+            {
+                jump_distance = 100;
+            }
+            else if (action == "jump over")
+            {
+                jump_distance = 50;
+            }
+
+            if (distance < jump_distance)
+            {
+                if (_input->is_action_pressed("right") && player_position.x < entity.position.x)
+                {
+                    _input->action_press("jump");
+                }
+                else if (_input->is_action_pressed("left") && player_position.x > entity.position.x)
+                {
+                    _input->action_press("jump");
+                }
+            }
+        }
+
+        if (obelisk->query(entity.name.utf8().get_data(), "is", "gold") > 0 && obelisk->query(std::string("gold ") + entity.name.utf8().get_data(), "is", "collectable") > 0)
+        {
+            auto player_position = parent->get_global_position();
+            float distance       = player_position.x - entity.position.x;
+            if (distance > -10 && distance < 10 && player_position.y - entity.position.y > 20)
+            {
+                _input->action_press("jump");
+            }
+        }
+
+        entities.pop();
+    }
+}
+
+void alai::player::AI::_on_object_report(godot::String name, godot::String state, godot::Vector2 position, godot::Vector2 velocity)
+{
+    auto entity     = Entity();
+    entity.name     = name.to_lower().rstrip("0123456789");
+    entity.state    = state;
+    entity.position = position;
+    entity.velocity = velocity;
+    entities.push(entity);
+}
diff --git a/src/player/AI.h b/src/player/AI.h
new file mode 100644
index 0000000..e3ae57d
--- /dev/null
+++ b/src/player/AI.h
@@ -0,0 +1,88 @@
+#ifndef ALAI_PLAYER_AI_H
+#define ALAI_PLAYER_AI_H
+
+#include "Event.h"
+#include "obelisk.h"
+#include "player/Player.h"
+
+#include <Godot.hpp>
+#include <Input.hpp>
+#include <Node.hpp>
+#include <Vector2.hpp>
+#include <queue>
+
+namespace alai
+{
+    namespace player
+    {
+        class Entity
+        {
+            public:
+                godot::String name;
+                godot::String state;
+                godot::Vector2 position;
+                godot::Vector2 velocity;
+        };
+
+        class AI : public godot::Node
+        {
+                GODOT_CLASS(AI, godot::Node)
+
+            private:
+                /**
+                 * @brief Input singleton.
+                 *
+                 */
+                godot::Input* _input;
+
+                /**
+                 * @brief The obelisk object.
+                 *
+                 */
+                std::unique_ptr<obelisk::Obelisk> obelisk;
+
+                alai::Event* event;
+
+                std::queue<alai::player::Entity> entities;
+
+                alai::player::Player* parent;
+
+            public:
+                /**
+                 * @brief This method registers classes with Godot.
+                 *
+                 * @details This method registers methods, properties, and signals with the Godot engine.
+                 */
+                static void
+                    _register_methods();
+
+                AI();
+                ~AI();
+
+                /**
+                 * @brief Initialize the class from Godot.
+                 *
+                 * @details This method is called just once when the Godot engine connects to the instance of the class.
+                 */
+                void _init();
+
+                /**
+                 * @brief Code to be run when ready.
+                 *
+                 * @details This method is run when all the children of this node are ready.
+                 */
+                void _ready();
+
+                /**
+                 * @brief The physics processed every delta time.
+                 *
+                 * @param[in] delta The time since the method was last run.
+                 */
+                void _physics_process(float delta);
+
+                void _on_object_report(godot::String name, godot::String state, godot::Vector2 position, godot::Vector2 velocity);
+        };
+    } // namespace player
+} // namespace alai
+
+#endif