diff --git a/src/core_defs.h b/src/core_defs.h
new file mode 100644
index 00000000..c30135bf
--- /dev/null
+++ b/src/core_defs.h
@@ -0,0 +1,21 @@
+#ifndef SRC_CORE_DEFS_H_
+#define SRC_CORE_DEFS_H_
+
+/* blocks and bindings used in engine code */
+
+#define BLOCK_AIR 0
+
+#define BIND_MOVE_FORWARD "movement.forward"
+#define BIND_MOVE_BACK "movement.back"
+#define BIND_MOVE_LEFT "movement.left"
+#define BIND_MOVE_RIGHT "movement.right"
+#define BIND_MOVE_JUMP "movement.jump"
+#define BIND_MOVE_SPRINT "movement.sprint"
+#define BIND_MOVE_CROUCH "movement.crouch"
+#define BIND_MOVE_CHEAT "movement.cheat"
+#define BIND_CAM_ZOOM "camera.zoom"
+#define BIND_PLAYER_NOCLIP "player.noclip"
+#define BIND_PLAYER_FLIGHT "player.flight"
+#define BIND_HUD_INVENTORY "hud.inventory"
+
+#endif // SRC_CORE_DEFS_H_
\ No newline at end of file
diff --git a/src/definitions.h b/src/definitions.h
index ce70975d..c4b5e0ba 100644
--- a/src/definitions.h
+++ b/src/definitions.h
@@ -2,8 +2,8 @@
 #define DECLARATIONS_H
 
 #include <iostream>
+#include "core_defs.h"
 
-#define BLOCK_AIR 0
 #define BLOCK_DIRT 1
 #define BLOCK_GRASS_BLOCK 2
 #define BLOCK_LAMP 3
@@ -21,19 +21,6 @@
 #define BLOCK_METAL 15
 #define BLOCK_RUST 16
 
-#define BIND_MOVE_FORWARD "movement.forward"
-#define BIND_MOVE_BACK "movement.back"
-#define BIND_MOVE_LEFT "movement.left"
-#define BIND_MOVE_RIGHT "movement.right"
-#define BIND_MOVE_JUMP "movement.jump"
-#define BIND_MOVE_SPRINT "movement.sprint"
-#define BIND_MOVE_CROUCH "movement.crouch"
-#define BIND_MOVE_CHEAT "movement.cheat"
-#define BIND_CAM_ZOOM "camera.zoom"
-#define BIND_PLAYER_NOCLIP "player.noclip"
-#define BIND_PLAYER_FLIGHT "player.flight"
-#define BIND_HUD_INVENTORY "hud.inventory"
-
 extern void setup_bindings();
 extern void setup_definitions();
 
diff --git a/src/frontend/hud.cpp b/src/frontend/hud.cpp
index 51246ce1..8fe79b8e 100644
--- a/src/frontend/hud.cpp
+++ b/src/frontend/hud.cpp
@@ -30,6 +30,7 @@
 #include "gui/GUI.h"
 #include "screens.h"
 #include "../engine.h"
+#include "../core_defs.h"
 
 using std::wstring;
 using std::shared_ptr;
@@ -309,7 +310,7 @@ void HudRenderer::draw(const GfxContext& ctx){
 			pauseMenu->visible(true);
 		}
 	}
-	if (Events::jactive("hud.inventory")) {
+	if (Events::jactive(BIND_HUD_INVENTORY)) {
 		if (!pause) {
 			inventoryOpen = !inventoryOpen;
 		}
diff --git a/src/objects/player_control.cpp b/src/objects/player_control.cpp
index adc6df30..0c426164 100644
--- a/src/objects/player_control.cpp
+++ b/src/objects/player_control.cpp
@@ -12,6 +12,8 @@
 #include "../window/Events.h"
 #include "../window/input.h"
 
+#include "../core_defs.h"
+
 #define CROUCH_SPEED_MUL 0.25f
 #define CROUCH_SHIFT_Y -0.2f
 #define RUN_SPEED_MUL 1.5f
@@ -38,18 +40,18 @@ void PlayerController::refreshCamera() {
 }
 
 void PlayerController::updateKeyboard() {
-	input.moveForward = Events::active("movement.forward");
-	input.moveBack = Events::active("movement.back");
-	input.moveLeft = Events::active("movement.left");
-	input.moveRight = Events::active("movement.right");
-	input.sprint = Events::active("movement.sprint");
-	input.shift = Events::active("movement.crouch");
-	input.cheat = Events::active("movement.cheat");
-	input.jump = Events::active("movement.jump");
-	input.zoom = Events::active("camera.zoom");
+	input.moveForward = Events::active(BIND_MOVE_FORWARD);
+	input.moveBack = Events::active(BIND_MOVE_BACK);
+	input.moveLeft = Events::active(BIND_MOVE_LEFT);
+	input.moveRight = Events::active(BIND_MOVE_RIGHT);
+	input.sprint = Events::active(BIND_MOVE_SPRINT);
+	input.shift = Events::active(BIND_MOVE_CROUCH);
+	input.cheat = Events::active(BIND_MOVE_CHEAT);
+	input.jump = Events::active(BIND_MOVE_JUMP);
+	input.zoom = Events::active(BIND_CAM_ZOOM);
 
-	input.noclip = Events::jactive("player.noclip");
-	input.flight = Events::jactive("player.flight");
+	input.noclip = Events::jactive(BIND_PLAYER_NOCLIP);
+	input.flight = Events::jactive(BIND_PLAYER_FLIGHT);
 
 	// block choice
 	for (int i = 1; i < 10; i++){