Some tweaks to get the linux build running

include/Old_Map.h

@@ -0,0 +1,42 @@
+#pragma once
+#include <SFML/System/Vector3.hpp>
+#include <SFML/System/Vector2.hpp>
+#include <SFML/Graphics/Color.hpp>
+#include <random>
+#include <iostream>
+#include <functional>
+#include <cmath>
+
+#define _USE_MATH_DEFINES
+#include <math.h>
+
+#include <deque>
+
+class Old_Map {
+public:
+
+	Old_Map(sf::Vector3i dim);
+	~Old_Map();
+
+	void generate_terrain();
+
+	sf::Vector3i getDimensions();
+	char* get_voxel_data();
+
+protected:
+
+private:
+
+	double* height_map;
+	char *voxel_data;
+	sf::Vector3i dimensions;
+
+	void set_voxel(sf::Vector3i position, int val);
+	double sample(int x, int y);
+	void set_sample(int x, int y, double value);
+	void sample_square(int x, int y, int size, double value);
+	void sample_diamond(int x, int y, int size, double value);
+	void diamond_square(int stepsize, double scale);
+
+
+};