diff options
Diffstat (limited to 'src/util')
| -rw-r--r-- | src/util/Optional.h | 77 | ||||
| -rw-r--r-- | src/util/numeric.cpp | 8 | ||||
| -rw-r--r-- | src/util/numeric.h | 4 | ||||
| -rw-r--r-- | src/util/serialize.h | 2 | ||||
| -rw-r--r-- | src/util/string.h | 10 |
5 files changed, 91 insertions, 10 deletions
diff --git a/src/util/Optional.h b/src/util/Optional.h new file mode 100644 index 000000000..9c2842b43 --- /dev/null +++ b/src/util/Optional.h @@ -0,0 +1,77 @@ +/* +Minetest +Copyright (C) 2021 rubenwardy + +This program is free software; you can redistribute it and/or modify +it under the terms of the GNU Lesser General Public License as published by +the Free Software Foundation; either version 2.1 of the License, or +(at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU Lesser General Public License for more details. + +You should have received a copy of the GNU Lesser General Public License along +with this program; if not, write to the Free Software Foundation, Inc., +51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. +*/ + +#pragma once + +#include "debug.h" + +struct nullopt_t +{ +}; +constexpr nullopt_t nullopt{}; + +/** + * An implementation of optional for C++11, which aims to be + * compatible with a subset of std::optional features. + * + * Unfortunately, Minetest doesn't use C++17 yet. + * + * @tparam T The type to be stored + */ +template <typename T> +class Optional +{ + bool m_has_value = false; + T m_value; + +public: + Optional() noexcept {} + Optional(nullopt_t) noexcept {} + Optional(const T &value) noexcept : m_has_value(true), m_value(value) {} + Optional(const Optional<T> &other) noexcept : + m_has_value(other.m_has_value), m_value(other.m_value) + { + } + + void operator=(nullopt_t) noexcept { m_has_value = false; } + + void operator=(const Optional<T> &other) noexcept + { + m_has_value = other.m_has_value; + m_value = other.m_value; + } + + T &value() + { + FATAL_ERROR_IF(!m_has_value, "optional doesn't have value"); + return m_value; + } + + const T &value() const + { + FATAL_ERROR_IF(!m_has_value, "optional doesn't have value"); + return m_value; + } + + const T &value_or(const T &def) const { return m_has_value ? m_value : def; } + + bool has_value() const noexcept { return m_has_value; } + + explicit operator bool() const { return m_has_value; } +}; diff --git a/src/util/numeric.cpp b/src/util/numeric.cpp index 1af3f66be..99e4cfb5c 100644 --- a/src/util/numeric.cpp +++ b/src/util/numeric.cpp @@ -106,10 +106,6 @@ u64 murmur_hash_64_ua(const void *key, int len, unsigned int seed) bool isBlockInSight(v3s16 blockpos_b, v3f camera_pos, v3f camera_dir, f32 camera_fov, f32 range, f32 *distance_ptr) { - // Maximum radius of a block. The magic number is - // sqrt(3.0) / 2.0 in literal form. - static constexpr const f32 block_max_radius = 0.866025403784f * MAP_BLOCKSIZE * BS; - v3s16 blockpos_nodes = blockpos_b * MAP_BLOCKSIZE; // Block center position @@ -123,7 +119,7 @@ bool isBlockInSight(v3s16 blockpos_b, v3f camera_pos, v3f camera_dir, v3f blockpos_relative = blockpos - camera_pos; // Total distance - f32 d = MYMAX(0, blockpos_relative.getLength() - block_max_radius); + f32 d = MYMAX(0, blockpos_relative.getLength() - BLOCK_MAX_RADIUS); if (distance_ptr) *distance_ptr = d; @@ -141,7 +137,7 @@ bool isBlockInSight(v3s16 blockpos_b, v3f camera_pos, v3f camera_dir, // such that a block that has any portion visible with the // current camera position will have the center visible at the // adjusted postion - f32 adjdist = block_max_radius / cos((M_PI - camera_fov) / 2); + f32 adjdist = BLOCK_MAX_RADIUS / cos((M_PI - camera_fov) / 2); // Block position relative to adjusted camera v3f blockpos_adj = blockpos - (camera_pos - camera_dir * adjdist); diff --git a/src/util/numeric.h b/src/util/numeric.h index 864ab7543..32a6f4312 100644 --- a/src/util/numeric.h +++ b/src/util/numeric.h @@ -20,6 +20,7 @@ with this program; if not, write to the Free Software Foundation, Inc., #pragma once #include "basic_macros.h" +#include "constants.h" #include "irrlichttypes.h" #include "irr_v2d.h" #include "irr_v3d.h" @@ -36,6 +37,9 @@ with this program; if not, write to the Free Software Foundation, Inc., y = temp; \ } while (0) +// Maximum radius of a block. The magic number is +// sqrt(3.0) / 2.0 in literal form. +static constexpr const f32 BLOCK_MAX_RADIUS = 0.866025403784f * MAP_BLOCKSIZE * BS; inline s16 getContainerPos(s16 p, s16 d) { diff --git a/src/util/serialize.h b/src/util/serialize.h index b3ec28eab..15bdd050d 100644 --- a/src/util/serialize.h +++ b/src/util/serialize.h @@ -290,7 +290,7 @@ inline void writeS8(u8 *data, s8 i) inline void writeS16(u8 *data, s16 i) { - writeU16(data, (u16)i); + writeU16(data, (u16)i); } inline void writeS32(u8 *data, s32 i) diff --git a/src/util/string.h b/src/util/string.h index d4afcaec8..21f1d6877 100644 --- a/src/util/string.h +++ b/src/util/string.h @@ -670,15 +670,19 @@ inline const std::string duration_to_string(int sec) std::stringstream ss; if (hour > 0) { - ss << hour << "h "; + ss << hour << "h"; + if (min > 0 || sec > 0) + ss << " "; } if (min > 0) { - ss << min << "m "; + ss << min << "min"; + if (sec > 0) + ss << " "; } if (sec > 0) { - ss << sec << "s "; + ss << sec << "s"; } return ss.str(); |