From 0d70fefc8b4891c82680dede7080e65c637f39b8 Mon Sep 17 00:00:00 2001
From: "Mahlon E. Smith" <mahlon@martini.nu>
Date: Wed, 20 Aug 2025 10:40:16 -0700
Subject: [PATCH] Experiment with resource loading (in the form of a config
 file).

Change compile time checks from "if" to "when", for proper type definitions.
---
 README.md             |  5 +++--
 config.nims           |  3 ++-
 resources/config.ini  |  5 +++++
 src/nim_wasm_test.nim | 26 +++++++++++++++++++-------
 4 files changed, 29 insertions(+), 10 deletions(-)
 create mode 100644 resources/config.ini

diff --git a/README.md b/README.md
index d8bd782..710368d 100644
--- a/README.md
+++ b/README.md
@@ -7,5 +7,6 @@ References:
 - https://github.com/planetis-m/naylib
 
 
-May need to add `/usr/lib/emscripten` to your path, and hard link `emar.py` to
-`emar`.
+If on arch, may need to add `/usr/lib/emscripten` to your path, and hard link
+`emar.py` to `emar`, along with `tools/file_packager.py` to
+`tools/file_packager` for some reason.
diff --git a/config.nims b/config.nims
index 33fdd22..55a64b3 100644
--- a/config.nims
+++ b/config.nims
@@ -23,7 +23,7 @@ when defined( emscripten ):
   --panics:on
   --exceptions:goto
   --define:noSignalHandler
-  --passL:"-Oz" # Production bu ld
+  # --passL:"-Oz" # Production bu ld
   # --passL:"-O0 -gDebug -gsource-map" # Debug build
   --passL:"-s EXPORT_ES6"
   --passL:"-s EXPORT_NAME=NimTest"
@@ -31,5 +31,6 @@ when defined( emscripten ):
   # --passL:"-s EXPORT_ALL=1" # make all public methods available to JS
   # --passL:"-s JSPI" # async support (new)
   # --passL:"-s ALLOW_MEMORY_GROWTH=1"
+  --passL:"--preload-file resources"
   --passL:"-o build/nimtest.js"
 
diff --git a/resources/config.ini b/resources/config.ini
new file mode 100644
index 0000000..f56f523
--- /dev/null
+++ b/resources/config.ini
@@ -0,0 +1,5 @@
+
+[Performance]
+# In milliseconds
+tick = 1000
+
diff --git a/src/nim_wasm_test.nim b/src/nim_wasm_test.nim
index 4d2834c..935a87e 100644
--- a/src/nim_wasm_test.nim
+++ b/src/nim_wasm_test.nim
@@ -2,9 +2,23 @@
 
 import
     std/os,
-    std/strformat
+    std/parsecfg,
+    std/strformat,
+    std/strutils
 import raylib
 
+var conf: Config
+try:
+    conf = loadConfig( "resources/config.ini" )
+except IOError as err:
+    echo "No config file, using defaults."
+    conf = newConfig()
+
+when defined( emscripten ):
+    var tick = conf.getSectionValue( "Performance", "tick", defaultVal = "10").parseInt.cuint
+else:
+    var tick = conf.getSectionValue( "Performance", "tick", defaultVal = "10").parseInt
+
 # Emscripten specific imports
 proc emscripten_set_main_loop( f: proc() {.cdecl.}, a: cint, b: bool ) {.importc.}
 proc emscripten_sleep( a: cuint ) {.importc.}
@@ -48,15 +62,13 @@ proc mainLoop() {.cdecl.} =
 
         count = count + 1
 
-        if defined( emscripten ):
-            emscripten_sleep 10
-            echo "wasm: hi"
+        when defined( emscripten ):
+            emscripten_sleep( tick )
         else:
-            sleep 10
-            echo "native: hi"
+            sleep( tick )
 
 
-if defined( emscripten ):
+when defined( emscripten ):
     emscripten_set_main_loop( mainLoop, 0, true );
 else:
     mainLoop()