implemented unicode support and generation of font atlas texture

helper.h

@@ -1,13 +1,18 @@
 #pragma once
 
+#include <stdlib.h>
+
 #include "z_math.h"
 
+typedef unsigned int wide_str;
+
 Matrix4x4 identity();
 void mult_4x4(Matrix4x4 *multiplicant, Matrix4x4 *multiplier);
 void apply_scale(Matrix4x4 *matrix, Sizef scale);
 void apply_rotation(Matrix4x4 *model, float angle);
 void apply_translation(Matrix4x4 *matrix, Vec2f pos);
 Matrix4x4 orthographic_projection_2d(float left, float right, float bottom, float top);
+uint wide_str_len(const wide_str *text);
 int max(int a, int b);
 float maxf(float a, float b);
 float clampf(float value, float min, float max);