diff --git a/game/src/camera.h b/game/src/camera.h
index e20f163..74de122 100644
--- a/game/src/camera.h
+++ b/game/src/camera.h
@@ -2,8 +2,6 @@
 
 #include <cglm/cglm.h>
 
-#include "util.h"
-
 void camera_get_direction (vec3 dest);
 void camera_get_right (vec3 dest);
 void camera_get_view (mat4 dest);
diff --git a/game/src/chunk/chunkman.c b/game/src/chunk/chunkman.c
index 560cde9..e589529 100644
--- a/game/src/chunk/chunkman.c
+++ b/game/src/chunk/chunkman.c
@@ -7,7 +7,7 @@ int n_frame_chunks;
 static GHashTable *chunks;
 static GHashTable *chunk_meshes;
 
-static bool bound = false;
+static gboolean bound = false;
 
 guint
 chunkman_ivec2_hash (gconstpointer key)
diff --git a/game/src/chunk/chunkmesh.c b/game/src/chunk/chunkmesh.c
index 74a1f6c..71f1fb3 100644
--- a/game/src/chunk/chunkmesh.c
+++ b/game/src/chunk/chunkmesh.c
@@ -114,7 +114,7 @@ ChunkMesh_bind (ChunkMesh *mesh)
 }
 
 void
-ChunkMesh_render (ChunkMesh *mesh, bool wireframe)
+ChunkMesh_render (ChunkMesh *mesh, gboolean wireframe)
 {
 
   glBindBuffer (GL_ARRAY_BUFFER, mesh->hbo);
diff --git a/game/src/chunk/chunkmesh.h b/game/src/chunk/chunkmesh.h
index 525f3fe..fa1a610 100644
--- a/game/src/chunk/chunkmesh.h
+++ b/game/src/chunk/chunkmesh.h
@@ -21,4 +21,4 @@ typedef struct ChunkMesh
 
 ChunkMesh *ChunkMesh_build (Chunk *chunk, Chunk *nr, Chunk *nd, Chunk *nc);
 void ChunkMesh_bind (ChunkMesh *mesh);
-void ChunkMesh_render (ChunkMesh *mesh, bool wireframe);
+void ChunkMesh_render (ChunkMesh *mesh, gboolean wireframe);
diff --git a/game/src/entity/entity.h b/game/src/entity/entity.h
index 0f37673..6ee3230 100644
--- a/game/src/entity/entity.h
+++ b/game/src/entity/entity.h
@@ -8,24 +8,22 @@
 #include <glib-2.0/glib.h>
 #include <cglm/cglm.h>
 
-#include <stdbool.h>
-
 typedef struct Entity
 {
   enum { MESH_QUAD1, MESH_QUAD2, MESH_QUAD_X } mesh_type;
   enum { ORIGIN_CENTER, ORIGIN_BOTTOM } origin;
   enum { RENDER_NORMAL, RENDER_BILLBOARD_Y, RENDER_BILLBOARD } render_type;
-  bool visible;
-  bool dont_cull;
+  gboolean visible;
+  gboolean dont_cull;
   /* 100 means as far as the terrain goes, less than 100, for example
      50, means half as far as the terrain goes. */
   unsigned int cull_distance;		
-  bool wavy;
+  gboolean wavy;
   
   void *userdata;
   
   void (*on_tick) (struct Entity *self);
-  bool tick_me_i_dont_care;	/* Tick this entity regardless of the
+  gboolean tick_me_i_dont_care;	/* Tick this entity regardless of the
 				   distance and other
 				   predicates. Useful for NPCs. */
   
diff --git a/game/src/event/evtman.c b/game/src/event/evtman.c
index 6976658..87a8172 100644
--- a/game/src/event/evtman.c
+++ b/game/src/event/evtman.c
@@ -4,21 +4,21 @@ extern vec3 camera_rotation;
 
 static GList *handlers = NULL;
 
-bool
+gboolean
 evt_pred_key (SDL_Event *event, void *data)
 {
   unsigned int expected_key = GPOINTER_TO_INT (data);
   return event->key.key == expected_key;
 }
 
-bool
+gboolean
 evt_pred_mouse (SDL_Event *event, void *data)
 {
   unsigned int expected_button = GPOINTER_TO_INT (data);
   return event->button.button == expected_button;
 }
 
-bool
+gboolean
 evt_pred_flag (SDL_Event *event, void *data)
 {
   UNUSED (event);
@@ -26,14 +26,14 @@ evt_pred_flag (SDL_Event *event, void *data)
   return flags_get (flag);
 }
 
-bool
+gboolean
 evt_cpred_and (SDL_Event *event, void *data)
 {
   CompositePredicate *cp = data;
   return cp->a (event, cp->a_data) && cp->b (event, cp->b_data);
 }
 
-bool
+gboolean
 evt_cpred_or (SDL_Event *event, void *data)
 {
   CompositePredicate *cp = data;
@@ -41,8 +41,8 @@ evt_cpred_or (SDL_Event *event, void *data)
 }
 
 CompositePredicate *
-evt_pred_compose (bool (*a) (SDL_Event *sdl_event, void *userdata), void *a_data,
-                  bool (*b) (SDL_Event *sdl_event, void *userdata), void *b_data)
+evt_pred_compose (gboolean (*a) (SDL_Event *sdl_event, void *userdata), void *a_data,
+                  gboolean (*b) (SDL_Event *sdl_event, void *userdata), void *b_data)
 {
   CompositePredicate *out = g_new (CompositePredicate, 1);
   out->a = a;
@@ -52,7 +52,7 @@ evt_pred_compose (bool (*a) (SDL_Event *sdl_event, void *userdata), void *a_data
   return out;
 }
 
-bool
+gboolean
 evt_cb_rotate_camera (SDL_Event *event, void *userdata)
 {
   UNUSED (userdata);
@@ -63,7 +63,7 @@ evt_cb_rotate_camera (SDL_Event *event, void *userdata)
   return true;
 }
 
-bool
+gboolean
 evt_cb_flag_off (SDL_Event *event, void *data)
 {
   UNUSED (event);
@@ -72,7 +72,7 @@ evt_cb_flag_off (SDL_Event *event, void *data)
   return true;
 }
 
-bool
+gboolean
 evt_cb_flag_on (SDL_Event *event, void *data)
 {
   UNUSED (event);
@@ -81,7 +81,7 @@ evt_cb_flag_on (SDL_Event *event, void *data)
   return true;
 }
 
-bool
+gboolean
 evt_cb_flag_switch (SDL_Event *event, void *data)
 {
   UNUSED (event);
@@ -127,9 +127,9 @@ evtman_init ()
 
 void
 evtman_add_handler (int priority, unsigned int filter,
-		    bool (*predicate) (SDL_Event *sdl_event, void *userdata),
+		    gboolean (*predicate) (SDL_Event *sdl_event, void *userdata),
 		    void *predicate_data,
-		    bool (*callback) (SDL_Event *sdl_event, void *userdata),
+		    gboolean (*callback) (SDL_Event *sdl_event, void *userdata),
 		    void *callback_data)
 {
   EventHandler *h = g_new (EventHandler, 1);
diff --git a/game/src/event/evtman.h b/game/src/event/evtman.h
index 377b0fc..d7720cc 100644
--- a/game/src/event/evtman.h
+++ b/game/src/event/evtman.h
@@ -11,17 +11,17 @@
 
 typedef struct CompositePredicate
 {
-  bool (*a) (SDL_Event *sdl_event, void *userdata);
+  gboolean (*a) (SDL_Event *sdl_event, void *userdata);
   void *a_data;
-  bool (*b) (SDL_Event *sdl_event, void *userdata);
+  gboolean (*b) (SDL_Event *sdl_event, void *userdata);
   void *b_data;
 } CompositePredicate;
 
 void evtman_init ();
 
 void evtman_add_handler (int priority, unsigned int filter,
-			 bool (*predicate) (SDL_Event *sdl_event, void *userdata),
+			 gboolean (*predicate) (SDL_Event *sdl_event, void *userdata),
 			 void *predicate_data,
-			 bool (*callback) (SDL_Event *sdl_event, void *userdata),
+			 gboolean (*callback) (SDL_Event *sdl_event, void *userdata),
 			 void *callback_data);
 void evtman_handle_SDL_Event (SDL_Event *event);
diff --git a/game/src/event/handler.h b/game/src/event/handler.h
index 45c95fa..43e5984 100644
--- a/game/src/event/handler.h
+++ b/game/src/event/handler.h
@@ -1,13 +1,12 @@
 #pragma once
 
 #include <SDL3/SDL.h>
-
-#include <stdbool.h>
+#include <glib-2.0/glib.h>
 
 typedef struct {
   unsigned int filter;
   int priority;
   void *predicate_data, *callback_data;
-  bool (*predicate) (SDL_Event *sdl_event, void *userdata);
-  bool (*callback) (SDL_Event *sdl_event, void *userdata);
+  gboolean (*predicate) (SDL_Event *sdl_event, void *userdata);
+  gboolean (*callback) (SDL_Event *sdl_event, void *userdata);
 } EventHandler;
diff --git a/game/src/flags.c b/game/src/flags.c
index 1b42cbc..c21f466 100644
--- a/game/src/flags.c
+++ b/game/src/flags.c
@@ -15,12 +15,12 @@ flags_switch (char *flag)
 }
 
 void
-flags_set (char *flag, bool value)
+flags_set (char *flag, gboolean value)
 {
   g_hash_table_replace (flags, flag, GINT_TO_POINTER (value));
 }
 
-bool
+gboolean
 flags_get (char *flag)
 {
   return GPOINTER_TO_INT (g_hash_table_lookup (flags, flag));
diff --git a/game/src/flags.h b/game/src/flags.h
index d56c754..7b86b94 100644
--- a/game/src/flags.h
+++ b/game/src/flags.h
@@ -1,7 +1,5 @@
 #pragma once
 
-#include <stdbool.h>
-
 #include <glib-2.0/glib.h>
 
 /*
@@ -15,11 +13,16 @@
   moving_left
   moving_right
 
+  flight_enabled
+  flying_up
+  flying_down
+  flying_fast
+  
   ui_has_focus
   
 */
 
 void flags_init ();
 void flags_switch (char *flag);
-void flags_set (char *flag, bool value);
-bool flags_get (char *flag);
+void flags_set (char *flag, gboolean value);
+gboolean flags_get (char *flag);
diff --git a/game/src/gl/mesh.c b/game/src/gl/mesh.c
index a4c31ed..950a9ab 100644
--- a/game/src/gl/mesh.c
+++ b/game/src/gl/mesh.c
@@ -23,7 +23,7 @@ SimpleMesh_bind (SimpleMesh *mesh)
 }
 
 void
-SimpleMesh_render (SimpleMesh *mesh, bool wireframe)
+SimpleMesh_render (SimpleMesh *mesh, gboolean wireframe)
 {
   glDrawElements (wireframe ? GL_LINES : GL_TRIANGLES, mesh->indices_len, GL_UNSIGNED_INT, 0);
 }
diff --git a/game/src/gl/mesh.h b/game/src/gl/mesh.h
index ca5802a..7b25c2e 100644
--- a/game/src/gl/mesh.h
+++ b/game/src/gl/mesh.h
@@ -14,7 +14,7 @@ typedef struct SimpleMesh
 } SimpleMesh;
 
 void SimpleMesh_bind (SimpleMesh *mesh);
-void SimpleMesh_render (SimpleMesh *mesh, bool wireframe);
+void SimpleMesh_render (SimpleMesh *mesh, gboolean wireframe);
 
 SimpleMesh SimpleMesh_make_quad1 ();
 SimpleMesh SimpleMesh_make_quad2 ();
diff --git a/game/src/main.c b/game/src/main.c
index dc0951b..12fc81c 100644
--- a/game/src/main.c
+++ b/game/src/main.c
@@ -1,8 +1,6 @@
 #define SDL_MAIN_USE_CALLBACKS 1
 #include <SDL3/SDL_main.h>
 
-#include <stdio.h>
-
 #include "event/evtman.h"
 #include "chunk/chunkman.h"
 #include "entity/templates.h"
diff --git a/game/src/ui/uielement.c b/game/src/ui/uielement.c
index 9fb31b8..6597803 100644
--- a/game/src/ui/uielement.c
+++ b/game/src/ui/uielement.c
@@ -32,7 +32,7 @@ UIElement_root_new ()
 }
 
 UIElement *
-UIElement_container_new (bool horizontal)
+UIElement_container_new (gboolean horizontal)
 {
   UIElement *e = ui_el_new_internal (UI_KIND_CONTAINER);
   e->container.horizontal = horizontal;
@@ -212,7 +212,7 @@ UIElement_render_with_model (UIElement *element, mat3 parent_model)
     }
 }
 
-static bool
+static gboolean
 UIElement_hit_test (UIElement *element, mat3 parent_model, vec2 point)
 {
   mat3 model;
diff --git a/game/src/ui/uielement.h b/game/src/ui/uielement.h
index 6bedb4b..ebd694e 100644
--- a/game/src/ui/uielement.h
+++ b/game/src/ui/uielement.h
@@ -1,9 +1,5 @@
 #pragma once
 
-/* TODO: Seperate userdata for each callback. */
-
-#include <stdbool.h>
-
 #include <glib-2.0/glib.h>
 #include <cglm/cglm.h>
 
@@ -22,7 +18,7 @@ typedef enum UIKind
 
 typedef struct UIContainer
 {
-  bool horizontal;
+  gboolean horizontal;
 } UIContainer;
 
 typedef struct UILabel
@@ -42,8 +38,8 @@ typedef struct UIElement
   vec2 scale;
   vec4 background_color, hover_background_color;
   unsigned int texture;
-  bool visible;
-  bool hovered;
+  gboolean visible;
+  gboolean hovered;
 
   void (*on_left_click) (struct UIElement *, void *);
   void *left_click_data;
@@ -61,7 +57,7 @@ typedef struct UIElement
 void ui_element_mesh_init ();
 
 UIElement *UIElement_root_new ();
-UIElement *UIElement_container_new (bool horizontal);
+UIElement *UIElement_container_new (gboolean horizontal);
 UIElement *UIElement_label_new (const char *text);
 
 void UIElement_add_child (UIElement *parent, UIElement *child);
diff --git a/game/src/ui/uiman.c b/game/src/ui/uiman.c
index ea2b5a6..061e431 100644
--- a/game/src/ui/uiman.c
+++ b/game/src/ui/uiman.c
@@ -88,7 +88,7 @@ screen_to_ui_coords (int mouse_x, int mouse_y, int screen_w, int screen_h, vec2
   out_coords[1] = 1.0 - (float) mouse_y / (float) screen_h * 2.0;
 }
 
-bool
+gboolean
 uiman_cb_switch_focus (SDL_Event *event, void *data)
 {
   UNUSED (event, data);
@@ -97,21 +97,21 @@ uiman_cb_switch_focus (SDL_Event *event, void *data)
   return true;
 }
 
-bool
+gboolean
 uiman_cb_key_down (SDL_Event *event, void *data)
 {
   UNUSED (event, data);
   return false;
 }
 
-bool
+gboolean
 uiman_cb_key_up (SDL_Event *event, void *data)
 {
   UNUSED (event, data);
   return false;
 }
 
-bool
+gboolean
 uiman_cb_mouse_motion (SDL_Event *event, void *data)
 {
   /* What even is in data at this point? No fucking idea. */
@@ -144,7 +144,7 @@ uiman_cb_mouse_motion (SDL_Event *event, void *data)
   return true;
 }
 
-bool
+gboolean
 uiman_cb_button_down (SDL_Event *event, void *data)
 {
   UNUSED (data);
@@ -175,21 +175,21 @@ uiman_cb_button_down (SDL_Event *event, void *data)
   return false;
 }
 
-bool
+gboolean
 uiman_cb_button_up (SDL_Event *event, void *data)
 {
   UNUSED (event, data);
   return false;
 }
 
-bool
+gboolean
 uiman_cb_mouse_wheel (SDL_Event *event, void *data)
 {
   UNUSED (event, data);
   return false;
 }
 
-bool
+gboolean
 uiman_cb_text_input (SDL_Event *event, void *data)
 {
   UNUSED (event, data);
diff --git a/game/src/ui/uiman.h b/game/src/ui/uiman.h
index 42e4d01..54efe11 100644
--- a/game/src/ui/uiman.h
+++ b/game/src/ui/uiman.h
@@ -9,12 +9,12 @@ void uiman_init ();
 void uiman_tick ();
 void uiman_render ();
 
-bool uiman_cb_switch_focus (SDL_Event *event, void *data);
+gboolean uiman_cb_switch_focus (SDL_Event *event, void *data);
 
-bool uiman_cb_key_down (SDL_Event *event, void *data);
-bool uiman_cb_key_up (SDL_Event *event, void *data);
-bool uiman_cb_mouse_motion (SDL_Event *event, void *data);
-bool uiman_cb_button_down (SDL_Event *event, void *data);
-bool uiman_cb_button_up (SDL_Event *event, void *data);
-bool uiman_cb_mouse_wheel (SDL_Event *event, void *data);
-bool uiman_cb_text_input (SDL_Event *event, void *data);
+gboolean uiman_cb_key_down (SDL_Event *event, void *data);
+gboolean uiman_cb_key_up (SDL_Event *event, void *data);
+gboolean uiman_cb_mouse_motion (SDL_Event *event, void *data);
+gboolean uiman_cb_button_down (SDL_Event *event, void *data);
+gboolean uiman_cb_button_up (SDL_Event *event, void *data);
+gboolean uiman_cb_mouse_wheel (SDL_Event *event, void *data);
+gboolean uiman_cb_text_input (SDL_Event *event, void *data);