Add helloworld example

examples/helloworld/helloworld.nim

@@ -0,0 +1,30 @@
+import libnx/gfx
+import libnx/console
+import libnx/hid
+import libnx/applet
+
+proc printf(formatstr: cstring) {.importc: "printf", varargs,
+                                  header: "<stdio.h>".}
+
+proc main() =
+  gfxInitDefault()
+
+  discard consoleInit(nil)
+
+  printf("\x1b[16;20HHello World From NIM!")
+  echo "\x1b[17;20HHELLO FROM NIM"
+  while appletMainLoop():
+    hidScanInput()
+
+    let keysDown = hidKeysDown(CONTROLLER_P1_AUTO)
+
+    if (keysDown and KEY_PLUS.uint64) > 0.uint64:
+      break
+
+    gfxFlushBuffers()
+    gfxSwapBuffers()
+    gfxWaitForVsync()
+
+  gfxExit()
+
+main()

examples/helloworld/helloworld.nim.cfg

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+--path="../../src"
+--path="../../ext"
+--os="nintendoswitch"

examples/helloworld/helloworld.nims

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+let buildDir = "build"
+let dkpPath = getEnv("DEVKITPRO")
+let toolsPath = dkpPath & "/tools/bin"
+let dkpCompilerPath = dkpPath & "/devkitA64/bin"
+
+switch("path", toolsPath)
+switch("path", dkpCompilerPath)
+
+task build, "Build hello world":
+
+  let author = "Unspecified Author"
+  let version = "1.0.0"
+
+  if existsDir buildDir:
+    rmDir buildDir
+
+  echo "Building..."
+
+  mkDir buildDir
+
+
+  exec "nim c --os:nintendoswitch helloworld.nim"
+
+  echo "Making nso..."
+  exec "elf2nso helloworld.elf " & buildDir & "/helloworld.nso"
+  
+  echo "Making pfs0..."
+  mkdir buildDir & "/exefs"
+  exec "cp " & buildDir & "/helloworld.nso " & buildDir & "/exefs/main"
+  exec "build_pfs0 " & buildDir & "/exefs " & buildDir & "/helloworld.pfs0"
+  
+  echo "Making lst..."
+  exec "aarch64-none-elf-gcc-nm helloworld.elf > " & buildDir & "/helloworld.lst"
+
+  echo "Making nacp..."
+  # Some meta data for the homebrew launcher
+  exec "nacptool --create helloworld '" & author & "' '" & version & "' " & buildDir & "/helloworld.nacp"
+
+  echo "Making nro..."
+  # This is the important one. The above are just extras.
+  exec "elf2nro helloworld.elf helloworld.nro --icon=" & dkpPath & "/libnx/default_icon.jpg --nacp=" & buildDir & "/helloworld.nacp"
+
+  echo "Done! helloworld.nro is now in the current directory."
+  echo "Other build files are in the build folder."
+
+task clean, "Cleanup files":
+  if existsDir buildDir:
+    rmDir buildDir
+
+  if existsDir "nimcache":
+    rmDir "nimcache"
+
+  if existsFile "helloworld.elf":
+    rmFile "helloworld.elf"
+
+  if existsFile "helloworld.nro":
+    rmFile "helloworld.nro"