small fixes

nim.cfg

@@ -3,7 +3,7 @@
 @end
 
 @if emscripten or asmjs or wasm:
-  o:"build/sdlife.wasm"
+  o:"build/sdlife.js"
   outdir:build
   @if not wasm:
     d:asmjs
@@ -15,7 +15,7 @@
   clang.options.linker = ""
   cpu = "i386"
   @if wasm:
-    passC = "-s WASM=2 -Iemscripten"
+    passC = "-s WASM=2 -Iemscripten -flto"
     passL = "-s WASM=2 -s ALLOW_MEMORY_GROWTH=1 -s USE_SDL=2 -s USE_SDL_GFX=2 -Lemscripten -flto"
   @elif asmjs:
     passC = "-s ASM_JS=1 -Iemscripten"
@@ -27,9 +27,6 @@
     passL %= "-O3"
   @end
 
-  #Fix _setjmp/longjmp problem. https://irclogs.nim-lang.org/24-09-2017.html#12:19:50 
-  d:nimStdSetjmp              # https://irclogs.nim-lang.org/24-09-2017.html#20:13:18
-
   #SDL
   define:sdl_custom_log
   dynlibOverride:"SDL2"
@@ -38,7 +35,6 @@
   dynlibOverride:"SDL2_mixer"
   dynlibOverride:"SDL2_ttf"
   dynlibOverride:"SDL2_net"
-  #passL %= "-s USE_SDL=2 ../libSDL2_gfx.o ../libSDL2_image-png.o ../libSDL2_ttf.o --preload-file ../assets"
 @else
   o:"build/sdlife"
 @end

src/sdlife/sdlife.nim

@@ -1,5 +1,5 @@
 import options
-import sdl2, sdl2/gfx
+import sdl2
 import grid
 import geo2d
 import mmath/smatrix