fixes for OpenDingux first OPK release

data/default.gcw0.desktop

@@ -4,6 +4,7 @@ Name=retro-8
 Comment=PICO-8 Emulator
 Terminal=false
 StartupNotify=true
-Exec=retro8
+Exec=retro8 %f
 Icon=icon
-Categories=emulator;
+Categories=emulators;
+X-OD-Filter=.png,.p8

projects/build_opk.sh

+rm -rf opk
+mkdir -p opk
+cp opendingux/retro8 opk
+cp vs2017/retro8/api.lua opk
+cp ../data/default.gcw0.desktop opk
+cp ../data/pico8_font.png opk
+cp ../data/icon.png opk
+mksquashfs opk retro8.opk -all-root -noappend -no-exports -no-xattrs -no-progress > /dev/null
+# rm -rf opk

src/views/view_manager.cpp

@@ -28,6 +28,8 @@ void ui::ViewManager::deinit()
 bool ui::ViewManager::loadData()
 {
   SDL_Surface* font = IMG_Load("pico8_font.png");
+  assert(font);
+
   machine.font().load(font);
 
   _font = SDL_CreateTextureFromSurface(_renderer, font);

src/vm/gfx.cpp

@@ -19,7 +19,7 @@ void ColorTable::init(SDL_PixelFormat* format)
 
 void Font::load(SDL_Surface* surface)
 {
-  assert(surface->w == SPRITE_WIDTH * FONT_GLYPHS_COLUMNS && surface->h == SPRITE_HEIGHT * FONT_GLYPHS_ROWS);
+  //assert(surface->w == SPRITE_WIDTH * FONT_GLYPHS_COLUMNS && surface->h == SPRITE_HEIGHT * FONT_GLYPHS_ROWS);
 
   for (size_t gy = 0; gy < FONT_GLYPHS_ROWS; ++gy)
     for (size_t gx = 0; gx < FONT_GLYPHS_COLUMNS; ++gx)

src/vm/memory.h

@@ -9,6 +9,7 @@
 #include <SDL.h>
 #include <array>
 #include <random>
+#include <cstring>
 
 namespace retro8
 {