Added filesystem stuff on Linux

More includes for Linux
Update build script to copy assets and compile shaders
Added base code directory as include path
Added FS_SystemPath
Made asset loading work directory agnostic

linux

@@ -12,6 +12,7 @@ pushd "build" > /dev/null
 
 release=0
 deps=0
+assets=0
 
 for a in $*
 do
@@ -23,6 +24,11 @@ then
 	deps=1
 fi
 
+if [[ ! -d "assets" ]]
+then
+	assets=1
+fi
+
 if [[ $deps == 1 ]]
 then
 	# We don't build SDL3 like on windows, this assumes you have it installed instead. We can't
@@ -35,10 +41,24 @@ then
 	cp ../thirdparty/stb/*.h deps/stb
 fi
 
+if [[ $assets == 1 ]]
+then
+	echo "[Copying assets]"
+
+	cp -r "../assets" .
+fi
+
+echo "[Building shaders]"
+
+[[ ! -d "assets/shaders" ]] && mkdir "assets/shaders"
+
+glslangValidator -o "assets/shaders/basic.vert.spv" --target-env "vulkan1.3" "../code/vulkan/shaders/basic.vert"
+glslangValidator -o "assets/shaders/basic.frag.spv" --target-env "vulkan1.3" "../code/vulkan/shaders/basic.frag"
+
 echo "[Building source]"
 
-COMPILER_OPTS="-Wall -Wno-missing-braces -Wno-unused-function -I'deps/stb'"
-LINKER_OPTS="-lSDL3"
+COMPILER_OPTS="-Wall -Wno-missing-braces -Wno-unused-function -Ideps/stb -I../code"
+LINKER_OPTS="-lSDL3 -lm"
 
 if [[ $release == 1 ]]
 then