graphics.c

static int graphicsLine(lua_State *L) { // love.graphics.line() -- Semi-Broken

	if (sf2d_get_current_screen() == currentScreen) {

		int argc = lua_gettop(L);

        //Table version
        if( argc == 1 ) {

            int tableLen = lua_objlen(L, 1);

            lua_settop(L, 1); //Remove redundant args
            luaL_checktype(L, 1, LUA_TTABLE);

            if( tableLen >= 4 ) {

                if( tableLen % 2 == 0 ) {
                    lua_pushnil(L);

                    int x, y, px, py = 0;

                    for(int i = 0; i < tableLen; i+=2 )
                    {
                        px = x;
                        py = y;

                        //luaL_error(L, tableLen-i);

                        x = luaL_checknumber(L, tableLen-i);
                        y = luaL_checknumber(L, tableLen-(i+1) );

                        if( i >= 4 ) {

                            sf2d_draw_line(x, y, px, py, getCurrentColor());

                        }
                    }

                }
                else {

                    luaL_error(L, "Number of vertex components must be a multiple of two");

                }

            } else {

                luaL_error(L, "Need at least two vertices to draw a line");

            }
        }

        //Non-table line
        if( argc == 4 ) {

            int x1 = luaL_checknumber(L, 1);
            int y1 = luaL_checknumber(L, 2);
            int x2 = luaL_checknumber(L, 3);
            int y2 = luaL_checknumber(L, 4);

            sf2d_draw_line(x1, y1, x2, y2, getCurrentColor());

            return 0;
        }

        //Polyline version

        return 0;

		if ((argc/2)*2 == argc) {
            for(int i; i < argc / 2; i++) {

				int t = i * 4;

				int x1 = luaL_checkinteger(L, t + 1);
				int y1 = luaL_checkinteger(L, t + 2);
				int x2 = luaL_checkinteger(L, t + 3);
				int y2 = luaL_checkinteger(L, t + 4);

				translateCoords(&x1, &y1);
				translateCoords(&x2, &y2);

				sf2d_draw_line(x1, y1, x2, y2, getCurrentColor());

			}
		}

	}

	return 0;

}