// Random grass
                grid[0][i][j] = GlobalStaticVars.WORLD_VALUE.fromInt(GlobalStaticVars.RandIntRange(rndGen, 2, 4));
                // Random trees
                if (GlobalStaticVars.RandIntRange(rndGen, 1, 10000) < tree_density)
                {
                    // Do not draw trees on world borders
                    if (i == 0 || j == 0 || i == sizeX - 1 || j == sizeY - 1)
                        continue;
                    grid[1][i][j] = GlobalStaticVars.WORLD_VALUE.TREE_1;
                    for (int a = 0; a < GlobalStaticVars.RandIntRange(rndGen, 1, 10); ++a)
                    {
                        for (int b = 0; b < GlobalStaticVars.RandIntRange(rndGen, 1, 10); ++b)
                        {
                            // Do not draw trees on world borders and boundary check
                            if (a+i < 1 || b+j < 1 || a+i > sizeX - 2 || b+j > sizeY - 2)
                                continue;
                            grid[1][a+i][b+j] = GlobalStaticVars.WORLD_VALUE.TREE_1;
                            // Try drawing tree's a bit more in the other direction
                            if (GlobalStaticVars.RandIntRange(rndGen, 1, 2) == 2)
                            {
                                if (a-i < 1 || b-j < 1)
                                    continue;
                                grid[1][a-i][b-j] = GlobalStaticVars.WORLD_VALUE.TREE_1;
                            }
                        }
                    }
                }