Support lovr /path/to/game;

src/graphics/graphics.c

@@ -37,13 +37,13 @@ int lovrGraphicsSetClearColor(lua_State* L) {
   float r = luaL_checknumber(L, 1);
   float g = luaL_checknumber(L, 2);
   float b = luaL_checknumber(L, 3);
-  float a = 1.0;
+  float a = 255.0;
 
   if (lua_gettop(L) == 4) {
     a = luaL_checknumber(L, 4);
   }
 
-  glClearColor(r, g, b, a);
+  glClearColor(r / 255, g / 255, b / 255, a / 255);
 
   return 0;
 }

src/graphics/graphics.h

@@ -4,6 +4,8 @@
 
 int lovrGraphicsClear(lua_State* L);
 int lovrGraphicsPresent(lua_State* L);
+int lovrGraphicsGetClearColor(lua_State* L);
+int lovrGraphicsSetClearColor(lua_State* L);
 int lovrGraphicsSetShader(lua_State* L);
 int lovrGraphicsNewModel(lua_State* L);
 int lovrGraphicsNewBuffer(lua_State* L);

src/lovr.c

@@ -74,10 +74,18 @@ void lovrDestroy() {
   exit(EXIT_SUCCESS);
 }
 
-void lovrRun(lua_State* L) {
+void lovrRun(lua_State* L, char* root) {
+
+  // Construct path to main.lua based on command line argument
+  char path[512];
+  if (root) {
+    snprintf(path, sizeof(path), "%s/main.lua", root);
+  } else {
+    snprintf(path, sizeof(path), "main.lua");
+  }
 
   // Run "main.lua" which will override/define pieces of lovr
-  if (luaL_dofile(L, "main.lua")) {
+  if (luaL_dofile(L, path)) {
     error("Failed to run main.lua");
     lua_pop(L, 1);
     exit(EXIT_FAILURE);

src/lovr.h

@@ -5,7 +5,7 @@
 
 void lovrInit(lua_State* L);
 void lovrDestroy();
-void lovrRun(lua_State* L);
+void lovrRun(lua_State* L, char* mainPath);
 int lovrOnLuaError(lua_State* L);
 void lovrOnGlfwError(int code, const char* description);
 void lovrOnClose(GLFWwindow* window);

src/main.c

@@ -3,13 +3,13 @@
 
 lua_State* L;
 
-int main(int argc, char* argv[]) {
+int main(int argc, char** argv) {
   L = luaL_newstate();
   luaL_openlibs(L);
 
   initGlfw(lovrOnGlfwError, lovrOnClose);
   lovrInit(L);
-  lovrRun(L);
+  lovrRun(L, argc > 1 ? argv[1] : NULL);
 
   return 0;
 }