World:getGravity; World:setGravity;

src/api/types/world.c

@@ -1,6 +1,27 @@
 #include "api/lovr.h"
 #include "physics/physics.h"
 
+int l_lovrWorldGetGravity(lua_State* L) {
+  World* world = luax_checktype(L, 1, World);
+  float x, y, z;
+  lovrWorldGetGravity(world, &x, &y, &z);
+  lua_pushnumber(L, x);
+  lua_pushnumber(L, y);
+  lua_pushnumber(L, z);
+  return 3;
+}
+
+int l_lovrWorldSetGravity(lua_State* L) {
+  World* world = luax_checktype(L, 1, World);
+  float x = luaL_checknumber(L, 2);
+  float y = luaL_checknumber(L, 3);
+  float z = luaL_checknumber(L, 4);
+  lovrWorldSetGravity(world, x, y, z);
+  return 0;
+}
+
 const luaL_Reg lovrWorld[] = {
+  { "getGravity", l_lovrWorldGetGravity },
+  { "setGravity", l_lovrWorldSetGravity },
   { NULL, NULL }
 };

src/physics/physics.c

@@ -29,3 +29,15 @@ void lovrWorldDestroy(const Ref* ref) {
   dWorldDestroy(world->id);
   free(world);
 }
+
+void lovrWorldGetGravity(World* world, float* x, float* y, float* z) {
+  dReal gravity[3];
+  dWorldGetGravity(world->id, gravity);
+  *x = gravity[0];
+  *y = gravity[1];
+  *z = gravity[2];
+}
+
+void lovrWorldSetGravity(World* world, float x, float y, float z) {
+  dWorldSetGravity(world->id, x, y, z);
+}

src/physics/physics.h

@@ -11,3 +11,5 @@ void lovrPhysicsDestroy();
 
 World* lovrWorldCreate();
 void lovrWorldDestroy(const Ref* ref);
+void lovrWorldGetGravity(World* world, float* x, float* y, float* z);
+void lovrWorldSetGravity(World* world, float x, float y, float z);