From fddd7f761176bb45cfdd41eeccaeadac22d33ddf Mon Sep 17 00:00:00 2001
From: untodesu <kirill@untode.su>
Date: Wed, 19 Mar 2025 18:07:51 +0500
Subject: Fix things and improve worldgen - Client-side now actually deletes
 invisible chunks - Improved world generation to use a second noise generator
 alongside   changing how caves are generated (ie what noise they use)

---
 core/vectors.hh | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 49 insertions(+)
 create mode 100644 core/vectors.hh

(limited to 'core/vectors.hh')

diff --git a/core/vectors.hh b/core/vectors.hh
new file mode 100644
index 0000000..e6e185a
--- /dev/null
+++ b/core/vectors.hh
@@ -0,0 +1,49 @@
+#ifndef CORE_VECTORS_HH
+#define CORE_VECTORS_HH 1
+#pragma once
+
+// cxvectors.hh - because NO ONE would POSSIBLY
+// need integer-based distance calculations in a
+// game about voxels. That would be INSANE! :D
+
+namespace cxvectors
+{
+template<typename value_type>
+constexpr static inline const value_type length2(const glm::vec<2, value_type> &vector);
+template<typename value_type>
+constexpr static inline const value_type length2(const glm::vec<3, value_type> &vector);
+template<typename value_type>
+constexpr static inline const value_type distance2(const glm::vec<2, value_type> &vector_a, const glm::vec<2, value_type> &vector_b);
+template<typename value_type>
+constexpr static inline const value_type distance2(const glm::vec<3, value_type> &vector_a, const glm::vec<3, value_type> &vector_b);
+} // namespace cxvectors
+
+template<typename value_type>
+constexpr static inline const value_type cxvectors::length2(const glm::vec<2, value_type> &vector)
+{
+    static_assert(std::is_arithmetic_v<value_type>);
+    return (vector.x * vector.x) + (vector.y * vector.y);
+}
+
+template<typename value_type>
+constexpr static inline const value_type cxvectors::length2(const glm::vec<3, value_type> &vector)
+{
+    static_assert(std::is_arithmetic_v<value_type>);
+    return (vector.x * vector.x) + (vector.y * vector.y) + (vector.z * vector.z);
+}
+
+template<typename value_type>
+constexpr static inline const value_type cxvectors::distance2(const glm::vec<2, value_type> &vector_a, const glm::vec<2, value_type> &vector_b)
+{
+    static_assert(std::is_arithmetic_v<value_type>);
+    return cxvectors::length2(vector_a - vector_b);
+}
+
+template<typename value_type>
+constexpr static inline const value_type cxvectors::distance2(const glm::vec<3, value_type> &vector_a, const glm::vec<3, value_type> &vector_b)
+{
+    static_assert(std::is_arithmetic_v<value_type>);
+    return cxvectors::length2(vector_a - vector_b);
+}
+
+#endif /* CORE_VECTORS_HH */
-- 
cgit