From cfa27fd8eed42599195fdff6d7d0e25586e8f18c Mon Sep 17 00:00:00 2001
From: untodesu <kirill@untode.su>
Date: Thu, 11 Sep 2025 16:00:57 +0500
Subject: Graft header-only math::AABB<T> from qfengine

---
 game/shared/entity/collision.cc  |  6 ++---
 game/shared/entity/collision.hh  |  2 +-
 game/shared/world/CMakeLists.txt |  3 +--
 game/shared/world/chunk_aabb.cc  | 54 ----------------------------------------
 game/shared/world/chunk_aabb.hh  | 25 +++----------------
 5 files changed, 8 insertions(+), 82 deletions(-)
 delete mode 100644 game/shared/world/chunk_aabb.cc

(limited to 'game/shared')

diff --git a/game/shared/entity/collision.cc b/game/shared/entity/collision.cc
index dbe7d30..24f5d49 100644
--- a/game/shared/entity/collision.cc
+++ b/game/shared/entity/collision.cc
@@ -24,7 +24,7 @@ static int vgrid_collide(const world::Dimension* dimension, int d, entity::Colli
     const auto& ref_aabb = collision.aabb;
     const auto current_aabb = ref_aabb.push(transform.local);
 
-    auto next_aabb = math::AABB(current_aabb);
+    auto next_aabb = math::AABBf(current_aabb);
     next_aabb.min[d] += move;
     next_aabb.max[d] += move;
 
@@ -60,7 +60,7 @@ static int vgrid_collide(const world::Dimension* dimension, int d, entity::Colli
     world::voxel_touch latch_touch = world::voxel_touch::NOTHING;
     glm::fvec3 latch_values = glm::fvec3(0.0f, 0.0f, 0.0f);
     world::voxel_surface latch_surface = world::voxel_surface::UNKNOWN;
-    math::AABB latch_vbox;
+    math::AABBf latch_vbox;
 
     for(auto i = dmin; i != dmax; i += ddir) {
         for(auto j = lpos_min[u]; j < lpos_max[u]; ++j)
@@ -79,7 +79,7 @@ static int vgrid_collide(const world::Dimension* dimension, int d, entity::Colli
                     continue;
                 }
 
-                math::AABB vbox;
+                math::AABBf vbox;
                 vbox.min = glm::fvec3(lpos);
                 vbox.max = glm::fvec3(lpos) + 1.0f;
 
diff --git a/game/shared/entity/collision.hh b/game/shared/entity/collision.hh
index ca94665..95a9b86 100644
--- a/game/shared/entity/collision.hh
+++ b/game/shared/entity/collision.hh
@@ -10,7 +10,7 @@ class Dimension;
 namespace entity
 {
 struct Collision final {
-    math::AABB aabb;
+    math::AABBf aabb;
 
 public:
     // NOTE: entity::Collision::fixed_update must be called
diff --git a/game/shared/world/CMakeLists.txt b/game/shared/world/CMakeLists.txt
index 6b9c281..15d5b59 100644
--- a/game/shared/world/CMakeLists.txt
+++ b/game/shared/world/CMakeLists.txt
@@ -1,8 +1,7 @@
 target_sources(shared PRIVATE
+    "${CMAKE_CURRENT_LIST_DIR}/chunk_aabb.hh"
     "${CMAKE_CURRENT_LIST_DIR}/chunk.cc"
     "${CMAKE_CURRENT_LIST_DIR}/chunk.hh"
-    "${CMAKE_CURRENT_LIST_DIR}/chunk_aabb.cc"
-    "${CMAKE_CURRENT_LIST_DIR}/chunk_aabb.hh"
     "${CMAKE_CURRENT_LIST_DIR}/dimension.cc"
     "${CMAKE_CURRENT_LIST_DIR}/dimension.hh"
     "${CMAKE_CURRENT_LIST_DIR}/feature.cc"
diff --git a/game/shared/world/chunk_aabb.cc b/game/shared/world/chunk_aabb.cc
deleted file mode 100644
index 634b230..0000000
--- a/game/shared/world/chunk_aabb.cc
+++ /dev/null
@@ -1,54 +0,0 @@
-#include "shared/pch.hh"
-
-#include "shared/world/chunk_aabb.hh"
-
-void world::ChunkAABB::set_bounds(const chunk_pos& min, const chunk_pos& max)
-{
-    this->min = min;
-    this->max = max;
-}
-
-void world::ChunkAABB::set_offset(const chunk_pos& base, const chunk_pos& size)
-{
-    this->min = base;
-    this->max = base + size;
-}
-
-bool world::ChunkAABB::contains(const chunk_pos& point) const
-{
-    auto result = true;
-    result = result && (point.x >= min.x) && (point.x <= max.x);
-    result = result && (point.y >= min.y) && (point.y <= max.y);
-    result = result && (point.z >= min.z) && (point.z <= max.z);
-    return result;
-}
-
-bool world::ChunkAABB::intersect(const ChunkAABB& other_box) const
-{
-    auto result = true;
-    result = result && (min.x < other_box.max.x) && (max.x > other_box.min.x);
-    result = result && (min.y < other_box.max.y) && (max.y > other_box.min.y);
-    result = result && (min.z < other_box.max.z) && (max.z > other_box.min.z);
-    return result;
-}
-
-world::ChunkAABB world::ChunkAABB::combine_with(const ChunkAABB& other_box) const
-{
-    ChunkAABB result;
-    result.set_bounds(min, other_box.max);
-    return result;
-}
-
-world::ChunkAABB world::ChunkAABB::multiply_with(const ChunkAABB& other_box) const
-{
-    ChunkAABB result;
-    result.set_bounds(other_box.min, max);
-    return result;
-}
-
-world::ChunkAABB world::ChunkAABB::push(const chunk_pos& vector) const
-{
-    ChunkAABB result;
-    result.set_bounds(min + vector, max + vector);
-    return result;
-}
diff --git a/game/shared/world/chunk_aabb.hh b/game/shared/world/chunk_aabb.hh
index a9e0205..3a2d26f 100644
--- a/game/shared/world/chunk_aabb.hh
+++ b/game/shared/world/chunk_aabb.hh
@@ -2,32 +2,13 @@
 #define SHARED_CHUNK_AABB 1
 #pragma once
 
+#include "core/math/aabb.hh"
+
 #include "shared/types.hh"
 
 namespace world
 {
-class ChunkAABB final {
-public:
-    ChunkAABB(void) = default;
-    virtual ~ChunkAABB(void) = default;
-
-    void set_bounds(const chunk_pos& min, const chunk_pos& max);
-    void set_offset(const chunk_pos& base, const chunk_pos& size);
-
-    const chunk_pos& get_min(void) const;
-    const chunk_pos& get_max(void) const;
-
-    bool contains(const chunk_pos& point) const;
-    bool intersect(const ChunkAABB& other_box) const;
-
-    ChunkAABB combine_with(const ChunkAABB& other_box) const;
-    ChunkAABB multiply_with(const ChunkAABB& other_box) const;
-    ChunkAABB push(const chunk_pos& vector) const;
-
-public:
-    chunk_pos min;
-    chunk_pos max;
-};
+using ChunkAABB = math::AABB<chunk_pos::value_type>;
 } // namespace world
 
 #endif // SHARED_CHUNK_AABB
-- 
cgit