Forgot to include stdbool.

.ccls

@@ -0,0 +1,5 @@
+# Headers
+-Isrc/headers
+-Isrc/ecs/headers
+-Isrc/ecs/components/headers
+-Icore/src/headers

.gitignore

@@ -1,2 +1,3 @@
+.ccls-cache
 build
 core

.vscode/c_cpp_properties.json

@@ -1,12 +0,0 @@
-{
-    "configurations": [
-        {
-            "name": "Default",
-            "includePath": [
-                "src/**/headers",
-                "core/src/headers"
-            ]
-        }
-    ],
-    "version": 4
-}

shell.nix

@@ -0,0 +1,17 @@
+with import <nixpkgs> {};
+stdenv.mkDerivation {
+  name = "env";
+  nativeBuildInputs = [
+    gnumake
+    gcc
+    pkg-config
+  ];
+  buildInputs = [
+    SDL2
+    SDL2_image
+  ];
+  shellHook = ''
+    export LD_LIBRARY_PATH=${pkgs.SDL2}/lib:${pkgs.SDL2_image}/lib:$LD_LIBRARY_PATH
+    export PKG_CONFIG_PATH=${pkgs.SDL2}/lib/pkgconfig:${pkgs.SDL2_image}/lib/pkgconfig:$PKG_CONFIG_PATH
+  '';
+}

src/headers/game.h

@@ -1,6 +1,8 @@
 #ifndef GAME_H
 #define GAME_H
 
+#include <stdbool.h>
+
 #include "events.h"
 #include "texture_manager.h"
 #include "ecs.h"