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36 Commits

Author SHA1 Message Date
308f7ed481 forgot return 2026-03-21 16:43:18 +03:00
8802ad9af1 fix 2026-03-21 16:41:03 +03:00
2ac508d6e8 fixed tests 2026-03-21 16:28:48 +03:00
eb1ca6055b added additional error code 2026-03-21 16:15:48 +03:00
b528e41de3 fixed test names 2026-03-21 15:45:22 +03:00
8615ab2b7c changed name, fixed bug 2026-03-21 15:22:02 +03:00
5a4c042fec replaced enum 2026-03-21 14:53:04 +03:00
8063c1697a improved interface 2026-03-21 14:41:07 +03:00
7567501f00 Merge pull request #175 from orange-cpp/feature/w2s_no_clip
added clip option
2026-03-21 14:12:07 +03:00
46d999f846 added clip option 2026-03-21 13:58:06 +03:00
b54601132b added doc build to release 2026-03-21 06:32:05 +03:00
5c8ce2d163 Merge pull request #174 from orange-cpp/feature/docs-pipelines
added docs pipeline
2026-03-21 06:26:21 +03:00
04a86739b4 added docs pipeline 2026-03-21 06:11:20 +03:00
575b411863 updated install md 2026-03-21 06:05:29 +03:00
5a91151bc0 fix 2026-03-19 20:27:25 +03:00
66d4df0524 fix 2026-03-19 20:17:10 +03:00
54e14760ca fix 2026-03-19 20:09:07 +03:00
ee61c47d7d Merge pull request #173 from orange-cpp/feature/targeting_algorithms
Feature/targeting algorithms
2026-03-19 19:52:22 +03:00
d737aee1c5 added by distance targeting 2026-03-19 19:29:01 +03:00
ef422f0a86 added overload 2026-03-19 19:23:39 +03:00
e99ca0bc2b update 2026-03-19 19:19:42 +03:00
5f94e36965 fix for windows specific suff related to far near macroses 2026-03-19 15:32:05 +03:00
29510cf9e7 Removed from credit by own request 2026-03-19 15:24:35 +03:00
927508a76b Merge pull request #172 from orange-cpp/feaute/methods_calling_improvement
Feaute/methods calling improvement
2026-03-19 01:33:42 +03:00
f390b386d7 fix 2026-03-19 01:06:16 +03:00
012d837e8b fix windows x32 bit 2026-03-19 00:57:54 +03:00
6236c8fd68 added nodiscard 2026-03-18 21:24:35 +03:00
06dc36089f added overload 2026-03-18 21:19:09 +03:00
91136a61c4 improvement 2026-03-18 21:12:18 +03:00
9cdffcbdb1 added tests 2026-03-18 20:12:46 +03:00
a3e93ac259 added nttp 2026-03-18 20:05:32 +03:00
59f6d7a361 added call_method 2026-03-18 19:58:52 +03:00
dcf1ef1ea9 Merge pull request #171 from orange-cpp/feaute/projectile_pred_improvement
Feaute/projectile pred improvement
2026-03-17 21:58:59 +03:00
89bd879187 added tolerance depending on arch 2026-03-17 21:15:39 +03:00
aa08c7cb65 improved projectile prediction 2026-03-17 20:43:26 +03:00
a5c0ca0cbd added stuff 2026-03-17 20:31:46 +03:00
32 changed files with 1598 additions and 46 deletions

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@@ -0,0 +1,7 @@
{
"permissions": {
"allow": [
"Bash(ls:*)"
]
}
}

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@@ -370,6 +370,8 @@ jobs:
shell: bash
run: |
cmake --preset ${{ matrix.preset }} \
-DCMAKE_C_COMPILER=$(xcrun --find clang) \
-DCMAKE_CXX_COMPILER=$(xcrun --find clang++) \
-DOMATH_BUILD_TESTS=ON \
-DOMATH_BUILD_BENCHMARK=OFF \
-DOMATH_ENABLE_COVERAGE=${{ matrix.coverage == true && 'ON' || 'OFF' }} \
@@ -380,6 +382,7 @@ jobs:
run: cmake --build cmake-build/build/${{ matrix.preset }} --target unit_tests omath
- name: Run unit_tests
if: ${{ matrix.coverage != true }}
shell: bash
run: ./out/Release/unit_tests

62
.github/workflows/docs.yml vendored Normal file
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@@ -0,0 +1,62 @@
name: Documentation
on:
push:
branches: [ main ]
paths:
- 'docs/**'
- 'mkdocs.yml'
- '.github/workflows/docs.yml'
pull_request:
branches: [ main ]
paths:
- 'docs/**'
- 'mkdocs.yml'
- '.github/workflows/docs.yml'
concurrency:
group: docs-${{ github.ref }}
cancel-in-progress: true
permissions:
contents: read
pages: write
id-token: write
jobs:
build:
name: Build Documentation
runs-on: ubuntu-latest
steps:
- name: Checkout repository
uses: actions/checkout@v4
- name: Set up Python
uses: actions/setup-python@v5
with:
python-version: '3.x'
- name: Install mkdocs and dependencies
run: pip install mkdocs mkdocs-bootswatch
- name: Build documentation
run: mkdocs build --strict
- name: Upload artifact
if: github.event_name == 'push' && github.ref == 'refs/heads/main'
uses: actions/upload-pages-artifact@v3
with:
path: site/
deploy:
name: Deploy to GitHub Pages
if: github.event_name == 'push' && github.ref == 'refs/heads/main'
needs: build
runs-on: ubuntu-latest
environment:
name: github-pages
url: ${{ steps.deployment.outputs.page_url }}
steps:
- name: Deploy to GitHub Pages
id: deployment
uses: actions/deploy-pages@v4

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@@ -12,6 +12,35 @@ permissions:
contents: write
jobs:
##############################################################################
# 0) Documentation MkDocs
##############################################################################
docs-release:
name: Documentation
runs-on: ubuntu-latest
steps:
- name: Checkout repository
uses: actions/checkout@v4
- name: Set up Python
uses: actions/setup-python@v5
with:
python-version: '3.x'
- name: Install mkdocs and dependencies
run: pip install mkdocs mkdocs-bootswatch
- name: Build documentation
run: mkdocs build --strict
- name: Package
run: tar -czf omath-docs.tar.gz -C site .
- name: Upload release asset
env:
GH_TOKEN: ${{ github.token }}
run: gh release upload "${{ github.event.release.tag_name }}" omath-docs.tar.gz --clobber
##############################################################################
# 1) Linux Clang / Ninja
##############################################################################

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@@ -3,7 +3,6 @@
Thanks to everyone who made this possible, including:
- Saikari aka luadebug for VCPKG port and awesome new initial logo design.
- AmbushedRaccoon for telegram post about omath to boost repository activity.
- Billy O'Neal aka BillyONeal for fixing compilation issues due to C math library compatibility.
- Alex2772 for reference of AUI declarative interface design for omath::hud

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@@ -28,6 +28,29 @@ target("...")
add_packages("omath")
```
## <img width="28px" src="https://conan.io/favicon.png" /> Using Conan
**Note**: Support Conan for package management
1. Install [Conan](https://conan.io/downloads)
2. Run the following command to install the omath package:
```
conan install --requires="omath/[*]" --build=missing
```
conanfile.txt
```ini
[requires]
omath/[*]
[generators]
CMakeDeps
CMakeToolchain
```
CMakeLists.txt
```cmake
find_package(omath CONFIG REQUIRED)
target_link_libraries(main PRIVATE omath::omath)
```
For more details, see the [Conan documentation](https://docs.conan.io/2/).
## <img width="28px" src="https://github.githubassets.com/favicons/favicon.svg" /> Using prebuilt binaries (GitHub Releases)
**Note**: This is the fastest option if you dont want to build from source.

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@@ -1,6 +1,6 @@
# Installation
# Installation Guide
## <img width="28px" src="https://vcpkg.io/assets/mark/mark.svg" /> Using vcpkg
## <img width="28px" src="https://vcpkg.io/assets/mark/mark.svg" /> Using vcpkg (recomended)
**Note**: Support vcpkg for package management
1. Install [vcpkg](https://github.com/microsoft/vcpkg)
2. Run the following command to install the orange-math package:
@@ -28,6 +28,69 @@ target("...")
add_packages("omath")
```
## <img width="28px" src="https://conan.io/favicon.png" /> Using Conan
**Note**: Support Conan for package management
1. Install [Conan](https://conan.io/downloads)
2. Run the following command to install the omath package:
```
conan install --requires="omath/[*]" --build=missing
```
conanfile.txt
```ini
[requires]
omath/[*]
[generators]
CMakeDeps
CMakeToolchain
```
CMakeLists.txt
```cmake
find_package(omath CONFIG REQUIRED)
target_link_libraries(main PRIVATE omath::omath)
```
For more details, see the [Conan documentation](https://docs.conan.io/2/).
## <img width="28px" src="https://github.githubassets.com/favicons/favicon.svg" /> Using prebuilt binaries (GitHub Releases)
**Note**: This is the fastest option if you dont want to build from source.
1. **Go to the Releases page**
- Open the projects GitHub **Releases** page and choose the latest version.
2. **Download the correct asset for your platform**
- Pick the archive that matches your OS and architecture (for example: Windows x64 / Linux x64 / macOS arm64).
3. **Extract the archive**
- You should end up with something like:
- `include/` (headers)
- `lib/` or `bin/` (library files / DLLs)
- sometimes `cmake/` (CMake package config)
4. **Use it in your project**
### Option A: CMake package (recommended if the release includes CMake config files)
If the extracted folder contains something like `lib/cmake/omath` or `cmake/omath`, you can point CMake to it:
```cmake
# Example: set this to the extracted prebuilt folder
list(APPEND CMAKE_PREFIX_PATH "path/to/omath-prebuilt")
find_package(omath CONFIG REQUIRED)
target_link_libraries(main PRIVATE omath::omath)
```
### Option B: Manual include + link (works with any layout)
If theres no CMake package config, link it manually:
```cmake
target_include_directories(main PRIVATE "path/to/omath-prebuilt/include")
# Choose ONE depending on what you downloaded:
# - Static library: .lib / .a
# - Shared library: .dll + .lib import (Windows), .so (Linux), .dylib (macOS)
target_link_directories(main PRIVATE "path/to/omath-prebuilt/lib")
target_link_libraries(main PRIVATE omath) # or the actual library filename
```
## <img width="28px" src="https://upload.wikimedia.org/wikipedia/commons/e/ef/CMake_logo.svg?" /> Build from source using CMake
1. **Preparation**
@@ -62,7 +125,7 @@ target("...")
Use **\<platform\>-\<build configuration\>** preset to build suitable version for yourself. Like **windows-release** or **linux-release**.
| Platform Name | Build Config |
|---------------|---------------|
|---------------|---------------|
| windows | release/debug |
| linux | release/debug |
| darwin | release/debug |

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@@ -0,0 +1,103 @@
//
// Created by Vladislav on 19.03.2026.
//
#pragma once
#include "omath/linear_algebra/vector3.hpp"
#include <functional>
#include <iterator>
#include <optional>
#include <ranges>
namespace omath::algorithm
{
template<class CameraType, std::input_or_output_iterator IteratorType, class FilterT>
requires std::is_invocable_r_v<bool, std::function<FilterT>, std::iter_reference_t<IteratorType>>
[[nodiscard]]
IteratorType get_closest_target_by_fov(const IteratorType& begin, const IteratorType& end, const CameraType& camera,
auto get_position,
const std::optional<std::function<FilterT>>& filter_func = std::nullopt)
{
auto best_target = end;
const auto& camera_angles = camera.get_view_angles();
const Vector2<float> camera_angles_vec = {camera_angles.pitch.as_degrees(), camera_angles.yaw.as_degrees()};
for (auto current = begin; current != end; current = std::next(current))
{
if (filter_func && !filter_func.value()(*current))
continue;
if (best_target == end)
{
best_target = current;
continue;
}
const auto current_target_angles = camera.calc_look_at_angles(get_position(*current));
const auto best_target_angles = camera.calc_look_at_angles(get_position(*best_target));
const Vector2<float> current_angles_vec = {current_target_angles.pitch.as_degrees(),
current_target_angles.yaw.as_degrees()};
const Vector2<float> best_angles_vec = {best_target_angles.pitch.as_degrees(),
best_target_angles.yaw.as_degrees()};
const auto current_target_distance = camera_angles_vec.distance_to(current_angles_vec);
const auto best_target_distance = camera_angles_vec.distance_to(best_angles_vec);
if (current_target_distance < best_target_distance)
best_target = current;
}
return best_target;
}
template<class CameraType, std::ranges::range RangeType, class FilterT>
requires std::is_invocable_r_v<bool, std::function<FilterT>,
std::ranges::range_reference_t<const RangeType>>
[[nodiscard]]
auto get_closest_target_by_fov(const RangeType& range, const CameraType& camera,
auto get_position,
const std::optional<std::function<FilterT>>& filter_func = std::nullopt)
{
return get_closest_target_by_fov<CameraType, decltype(std::ranges::begin(range)), FilterT>(
std::ranges::begin(range), std::ranges::end(range), camera, get_position, filter_func);
}
// ── By world-space distance ───────────────────────────────────────────────
template<std::input_or_output_iterator IteratorType, class FilterT>
requires std::is_invocable_r_v<bool, std::function<FilterT>, std::iter_reference_t<IteratorType>>
[[nodiscard]]
IteratorType get_closest_target_by_distance(const IteratorType& begin, const IteratorType& end,
const Vector3<float>& origin, auto get_position,
const std::optional<std::function<FilterT>>& filter_func = std::nullopt)
{
auto best_target = end;
for (auto current = begin; current != end; current = std::next(current))
{
if (filter_func && !filter_func.value()(*current))
continue;
if (best_target == end)
{
best_target = current;
continue;
}
if (origin.distance_to(get_position(*current)) < origin.distance_to(get_position(*best_target)))
best_target = current;
}
return best_target;
}
template<std::ranges::range RangeType, class FilterT>
requires std::is_invocable_r_v<bool, std::function<FilterT>,
std::ranges::range_reference_t<const RangeType>>
[[nodiscard]]
auto get_closest_target_by_distance(const RangeType& range, const Vector3<float>& origin,
auto get_position,
const std::optional<std::function<FilterT>>& filter_func = std::nullopt)
{
return get_closest_target_by_distance<decltype(std::ranges::begin(range)), FilterT>(
std::ranges::begin(range), std::ranges::end(range), origin, get_position, filter_func);
}
} // namespace omath::algorithm

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@@ -16,7 +16,8 @@ namespace omath::cry_engine
const float pitch, const float yaw,
const float time, const float gravity) noexcept
{
auto current_pos = projectile.m_origin
const auto launch_pos = projectile.m_origin + projectile.m_launch_offset;
auto current_pos = launch_pos
+ forward_vector({PitchAngle::from_degrees(-pitch), YawAngle::from_degrees(yaw),
RollAngle::from_degrees(0)})
* projectile.m_launch_speed * time;

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@@ -16,7 +16,8 @@ namespace omath::frostbite_engine
const float pitch, const float yaw,
const float time, const float gravity) noexcept
{
auto current_pos = projectile.m_origin
const auto launch_pos = projectile.m_origin + projectile.m_launch_offset;
auto current_pos = launch_pos
+ forward_vector({PitchAngle::from_degrees(-pitch), YawAngle::from_degrees(yaw),
RollAngle::from_degrees(0)})
* projectile.m_launch_speed * time;

View File

@@ -17,7 +17,8 @@ namespace omath::iw_engine
const float pitch, const float yaw,
const float time, const float gravity) noexcept
{
auto current_pos = projectile.m_origin
const auto launch_pos = projectile.m_origin + projectile.m_launch_offset;
auto current_pos = launch_pos
+ forward_vector({PitchAngle::from_degrees(-pitch), YawAngle::from_degrees(yaw),
RollAngle::from_degrees(0)})
* projectile.m_launch_speed * time;

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@@ -16,7 +16,8 @@ namespace omath::opengl_engine
const float pitch, const float yaw,
const float time, const float gravity) noexcept
{
auto current_pos = projectile.m_origin
const auto launch_pos = projectile.m_origin + projectile.m_launch_offset;
auto current_pos = launch_pos
+ forward_vector({PitchAngle::from_degrees(-pitch), YawAngle::from_degrees(yaw),
RollAngle::from_degrees(0)})
* projectile.m_launch_speed * time;

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@@ -17,7 +17,8 @@ namespace omath::source_engine
const float pitch, const float yaw,
const float time, const float gravity) noexcept
{
auto current_pos = projectile.m_origin
const auto launch_pos = projectile.m_origin + projectile.m_launch_offset;
auto current_pos = launch_pos
+ forward_vector({PitchAngle::from_degrees(-pitch), YawAngle::from_degrees(yaw),
RollAngle::from_degrees(0)})
* projectile.m_launch_speed * time;

View File

@@ -16,7 +16,8 @@ namespace omath::unity_engine
const float pitch, const float yaw,
const float time, const float gravity) noexcept
{
auto current_pos = projectile.m_origin
const auto launch_pos = projectile.m_origin + projectile.m_launch_offset;
auto current_pos = launch_pos
+ forward_vector({PitchAngle::from_degrees(-pitch), YawAngle::from_degrees(yaw),
RollAngle::from_degrees(0)})
* projectile.m_launch_speed * time;

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@@ -16,7 +16,8 @@ namespace omath::unreal_engine
const float pitch, const float yaw,
const float time, const float gravity) noexcept
{
auto current_pos = projectile.m_origin
const auto launch_pos = projectile.m_origin + projectile.m_launch_offset;
auto current_pos = launch_pos
+ forward_vector({PitchAngle::from_degrees(-pitch), YawAngle::from_degrees(yaw),
RollAngle::from_degrees(0)})
* projectile.m_launch_speed * time;

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@@ -8,12 +8,23 @@
namespace omath::projectile_prediction
{
struct AimAngles
{
float pitch{};
float yaw{};
};
class ProjPredEngineInterface
{
public:
[[nodiscard]]
virtual std::optional<Vector3<float>> maybe_calculate_aim_point(const Projectile& projectile,
const Target& target) const = 0;
[[nodiscard]]
virtual std::optional<AimAngles> maybe_calculate_aim_angles(const Projectile& projectile,
const Target& target) const = 0;
virtual ~ProjPredEngineInterface() = default;
};
} // namespace omath::projectile_prediction

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@@ -12,6 +12,9 @@ namespace omath::projectile_prediction
[[nodiscard]] std::optional<Vector3<float>>
maybe_calculate_aim_point(const Projectile& projectile, const Target& target) const override;
[[nodiscard]] std::optional<AimAngles>
maybe_calculate_aim_angles(const Projectile& projectile, const Target& target) const override;
ProjPredEngineAvx2(float gravity_constant, float simulation_time_step, float maximum_simulation_time);
~ProjPredEngineAvx2() override = default;

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@@ -54,6 +54,36 @@ namespace omath::projectile_prediction
[[nodiscard]]
std::optional<Vector3<float>> maybe_calculate_aim_point(const Projectile& projectile,
const Target& target) const override
{
const auto solution = find_solution(projectile, target);
if (!solution)
return std::nullopt;
return EngineTrait::calc_viewpoint_from_angles(projectile, solution->predicted_target_position,
solution->pitch);
}
[[nodiscard]]
std::optional<AimAngles> maybe_calculate_aim_angles(const Projectile& projectile,
const Target& target) const override
{
const auto solution = find_solution(projectile, target);
if (!solution)
return std::nullopt;
const auto yaw = EngineTrait::calc_direct_yaw_angle(projectile.m_origin + projectile.m_launch_offset, solution->predicted_target_position);
return AimAngles{solution->pitch, yaw};
}
private:
struct Solution
{
Vector3<float> predicted_target_position;
float pitch;
};
[[nodiscard]]
std::optional<Solution> find_solution(const Projectile& projectile, const Target& target) const
{
for (float time = 0.f; time < m_maximum_simulation_time; time += m_simulation_time_step)
{
@@ -70,12 +100,11 @@ namespace omath::projectile_prediction
time))
continue;
return EngineTrait::calc_viewpoint_from_angles(projectile, predicted_target_position, projectile_pitch);
return Solution{predicted_target_position, projectile_pitch.value()};
}
return std::nullopt;
}
private:
const float m_gravity_constant;
const float m_simulation_time_step;
const float m_maximum_simulation_time;
@@ -100,10 +129,12 @@ namespace omath::projectile_prediction
{
const auto bullet_gravity = m_gravity_constant * projectile.m_gravity_scale;
if (bullet_gravity == 0.f)
return EngineTrait::calc_direct_pitch_angle(projectile.m_origin, target_position);
const auto launch_origin = projectile.m_origin + projectile.m_launch_offset;
const auto delta = target_position - projectile.m_origin;
if (bullet_gravity == 0.f)
return EngineTrait::calc_direct_pitch_angle(launch_origin, target_position);
const auto delta = target_position - launch_origin;
const auto distance2d = EngineTrait::calc_vector_2d_distance(delta);
const auto distance2d_sqr = distance2d * distance2d;
@@ -126,7 +157,7 @@ namespace omath::projectile_prediction
bool is_projectile_reached_target(const Vector3<float>& target_position, const Projectile& projectile,
const float pitch, const float time) const noexcept
{
const auto yaw = EngineTrait::calc_direct_yaw_angle(projectile.m_origin, target_position);
const auto yaw = EngineTrait::calc_direct_yaw_angle(projectile.m_origin + projectile.m_launch_offset, target_position);
const auto projectile_position =
EngineTrait::predict_projectile_position(projectile, pitch, yaw, time, m_gravity_constant);

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@@ -11,6 +11,7 @@ namespace omath::projectile_prediction
{
public:
Vector3<float> m_origin;
Vector3<float> m_launch_offset{0.f, 0.f, 0.f};
float m_launch_speed{};
float m_gravity_scale{};
};

View File

@@ -36,7 +36,11 @@ namespace omath::projection
}
};
using FieldOfView = Angle<float, 0.f, 180.f, AngleFlags::Clamped>;
enum class ViewPortClipping
{
AUTO,
MANUAL,
};
template<class T, class MatType, class ViewAnglesType>
concept CameraEngineConcept =
requires(const Vector3<float>& cam_origin, const Vector3<float>& look_at, const ViewAnglesType& angles,
@@ -82,6 +86,11 @@ namespace omath::projection
m_view_projection_matrix = std::nullopt;
m_view_matrix = std::nullopt;
}
[[nodiscard]]
ViewAnglesType calc_look_at_angles(const Vector3<float>& look_to) const
{
return TraitClass::calc_look_at_angle(m_origin, look_to);
}
[[nodiscard]]
Vector3<float> get_forward() const noexcept
@@ -138,16 +147,16 @@ namespace omath::projection
m_projection_matrix = std::nullopt;
}
void set_near_plane(const float near) noexcept
void set_near_plane(const float near_plane) noexcept
{
m_near_plane_distance = near;
m_near_plane_distance = near_plane;
m_view_projection_matrix = std::nullopt;
m_projection_matrix = std::nullopt;
}
void set_far_plane(const float far) noexcept
void set_far_plane(const float far_plane) noexcept
{
m_far_plane_distance = far;
m_far_plane_distance = far_plane;
m_view_projection_matrix = std::nullopt;
m_projection_matrix = std::nullopt;
}
@@ -213,6 +222,22 @@ namespace omath::projection
else
std::unreachable();
}
template<ScreenStart screen_start = ScreenStart::TOP_LEFT_CORNER>
[[nodiscard]] std::expected<Vector3<float>, Error>
world_to_screen_unclipped(const Vector3<float>& world_position) const noexcept
{
const auto normalized_cords = world_to_view_port(world_position, ViewPortClipping::MANUAL);
if (!normalized_cords.has_value())
return std::unexpected{normalized_cords.error()};
if constexpr (screen_start == ScreenStart::TOP_LEFT_CORNER)
return ndc_to_screen_position_from_top_left_corner(*normalized_cords);
else if constexpr (screen_start == ScreenStart::BOTTOM_LEFT_CORNER)
return ndc_to_screen_position_from_bottom_left_corner(*normalized_cords);
else
std::unreachable();
}
[[nodiscard]] bool is_culled_by_frustum(const Triangle<Vector3<float>>& triangle) const noexcept
{
@@ -262,24 +287,34 @@ namespace omath::projection
}
[[nodiscard]] std::expected<Vector3<float>, Error>
world_to_view_port(const Vector3<float>& world_position) const noexcept
world_to_view_port(const Vector3<float>& world_position,
const ViewPortClipping& clipping = ViewPortClipping::AUTO) const noexcept
{
auto projected = get_view_projection_matrix()
* mat_column_from_vector<float, Mat4X4Type::get_store_ordering()>(world_position);
const auto& w = projected.at(3, 0);
if (w <= std::numeric_limits<float>::epsilon())
return std::unexpected(Error::WORLD_POSITION_IS_OUT_OF_SCREEN_BOUNDS);
constexpr auto eps = std::numeric_limits<float>::epsilon();
if (w <= eps)
return std::unexpected(Error::PERSPECTIVE_DIVIDER_LESS_EQ_ZERO);
projected /= w;
if (is_ndc_out_of_bounds(projected))
// ReSharper disable once CppTooWideScope
const auto clipped_automatically = clipping == ViewPortClipping::AUTO && is_ndc_out_of_bounds(projected);
if (clipped_automatically)
return std::unexpected(Error::WORLD_POSITION_IS_OUT_OF_SCREEN_BOUNDS);
// ReSharper disable once CppTooWideScope
const auto clipped_manually = clipping == ViewPortClipping::MANUAL && (projected.at(2, 0) < 0.0f - eps
|| projected.at(2, 0) > 1.0f + eps);
if (clipped_manually)
return std::unexpected(Error::WORLD_POSITION_IS_OUT_OF_SCREEN_BOUNDS);
return Vector3<float>{projected.at(0, 0), projected.at(1, 0), projected.at(2, 0)};
}
[[nodiscard]]
std::expected<Vector3<float>, Error> view_port_to_screen(const Vector3<float>& ndc) const noexcept
std::expected<Vector3<float>, Error> view_port_to_world(const Vector3<float>& ndc) const noexcept
{
const auto inv_view_proj = get_view_projection_matrix().inverted();
@@ -304,7 +339,7 @@ namespace omath::projection
[[nodiscard]]
std::expected<Vector3<float>, Error> screen_to_world(const Vector3<float>& screen_pos) const noexcept
{
return view_port_to_screen(screen_to_ndc<screen_start>(screen_pos));
return view_port_to_world(screen_to_ndc<screen_start>(screen_pos));
}
template<ScreenStart screen_start = ScreenStart::TOP_LEFT_CORNER>

View File

@@ -11,5 +11,6 @@ namespace omath::projection
{
WORLD_POSITION_IS_OUT_OF_SCREEN_BOUNDS,
INV_VIEW_PROJ_MAT_DET_EQ_ZERO,
PERSPECTIVE_DIVIDER_LESS_EQ_ZERO,
};
}

View File

@@ -3,11 +3,43 @@
//
#pragma once
#include <cassert>
#include <cstddef>
#include <cstdint>
#include <string_view>
#ifdef _WIN32
#include "omath/utility/pe_pattern_scan.hpp"
#include <windows.h>
#elif defined(__APPLE__)
#include "omath/utility/macho_pattern_scan.hpp"
#include <mach-o/dyld.h>
#else
#include "omath/utility/elf_pattern_scan.hpp"
#include <link.h>
#endif
namespace omath::rev_eng
{
template<std::size_t N>
struct FixedString final
{
char data[N]{};
// ReSharper disable once CppNonExplicitConvertingConstructor
constexpr FixedString(const char (&str)[N]) noexcept // NOLINT(*-explicit-constructor)
{
for (std::size_t i = 0; i < N; ++i)
data[i] = str[i];
}
// ReSharper disable once CppNonExplicitConversionOperator
constexpr operator std::string_view() const noexcept // NOLINT(*-explicit-constructor)
{
return {data, N - 1};
}
};
template<std::size_t N>
FixedString(const char (&)[N]) -> FixedString<N>;
class InternalReverseEngineeredObject
{
protected:
@@ -23,26 +55,123 @@ namespace omath::rev_eng
return *reinterpret_cast<Type*>(reinterpret_cast<std::uintptr_t>(this) + offset);
}
template<std::size_t id, class ReturnType>
template<class ReturnType>
ReturnType call_method(const void* ptr, auto... arg_list)
{
#ifdef _MSC_VER
using MethodType = ReturnType(__thiscall*)(void*, decltype(arg_list)...);
#else
using MethodType = ReturnType (*)(void*, decltype(arg_list)...);
#endif
return reinterpret_cast<MethodType>(const_cast<void*>(ptr))(this, arg_list...);
}
template<class ReturnType>
ReturnType call_method(const void* ptr, auto... arg_list) const
{
#ifdef _MSC_VER
using MethodType = ReturnType(__thiscall*)(const void*, decltype(arg_list)...);
#else
using MethodType = ReturnType (*)(const void*, decltype(arg_list)...);
#endif
return reinterpret_cast<MethodType>(const_cast<void*>(ptr))(this, arg_list...);
}
template<FixedString ModuleName, FixedString Pattern, class ReturnType>
ReturnType call_method(auto... arg_list)
{
static const auto* address = resolve_pattern(ModuleName, Pattern);
return call_method<ReturnType>(address, arg_list...);
}
template<FixedString ModuleName, FixedString Pattern, class ReturnType>
ReturnType call_method(auto... arg_list) const
{
static const auto* address = resolve_pattern(ModuleName, Pattern);
return call_method<ReturnType>(address, arg_list...);
}
template<class ReturnType>
ReturnType call_method(const std::string_view& module_name,const std::string_view& pattern, auto... arg_list)
{
static const auto* address = resolve_pattern(module_name, pattern);
return call_method<ReturnType>(address, arg_list...);
}
template<class ReturnType>
ReturnType call_method(const std::string_view& module_name,const std::string_view& pattern, auto... arg_list) const
{
static const auto* address = resolve_pattern(module_name, pattern);
return call_method<ReturnType>(address, arg_list...);
}
template<std::size_t Id, class ReturnType>
ReturnType call_virtual_method(auto... arg_list)
{
#ifdef _MSC_VER
using VirtualMethodType = ReturnType(__thiscall*)(void*, decltype(arg_list)...);
#else
using VirtualMethodType = ReturnType (*)(void*, decltype(arg_list)...);
#endif
return (*reinterpret_cast<VirtualMethodType**>(this))[id](this, arg_list...);
const auto vtable = *reinterpret_cast<void***>(this);
return call_method<ReturnType>(vtable[Id], arg_list...);
}
template<std::size_t id, class ReturnType>
template<std::size_t Id, class ReturnType>
ReturnType call_virtual_method(auto... arg_list) const
{
#ifdef _MSC_VER
using VirtualMethodType = ReturnType(__thiscall*)(void*, decltype(arg_list)...);
const auto vtable = *reinterpret_cast<void* const* const*>(this);
return call_method<ReturnType>(vtable[Id], arg_list...);
}
private:
[[nodiscard]]
static const void* resolve_pattern(const std::string_view module_name, const std::string_view pattern)
{
const auto* base = get_module_base(module_name);
assert(base && "Failed to find module");
#ifdef _WIN32
const auto result = PePatternScanner::scan_for_pattern_in_loaded_module(base, pattern);
#elif defined(__APPLE__)
const auto result = MachOPatternScanner::scan_for_pattern_in_loaded_module(base, pattern);
#else
using VirtualMethodType = ReturnType (*)(void*, decltype(arg_list)...);
const auto result = ElfPatternScanner::scan_for_pattern_in_loaded_module(base, pattern);
#endif
assert(result.has_value() && "Pattern scan failed");
return reinterpret_cast<const void*>(*result);
}
[[nodiscard]]
static const void* get_module_base(const std::string_view module_name)
{
#ifdef _WIN32
return GetModuleHandleA(module_name.data());
#elif defined(__APPLE__)
// On macOS, iterate loaded images to find the module by name
const auto count = _dyld_image_count();
for (std::uint32_t i = 0; i < count; ++i)
{
const auto* name = _dyld_get_image_name(i);
if (name && std::string_view{name}.find(module_name) != std::string_view::npos)
return static_cast<const void*>(_dyld_get_image_header(i));
}
return nullptr;
#else
// On Linux, use dl_iterate_phdr to find loaded module by name
struct CallbackData
{
std::string_view name;
const void* base;
} cb_data{module_name, nullptr};
dl_iterate_phdr(
[](dl_phdr_info* info, std::size_t, void* data) -> int
{
auto* cb = static_cast<CallbackData*>(data);
if (info->dlpi_name
&& std::string_view{info->dlpi_name}.find(cb->name) != std::string_view::npos)
{
cb->base = reinterpret_cast<const void*>(info->dlpi_addr);
return 1;
}
return 0;
},
&cb_data);
return cb_data.base;
#endif
return (*static_cast<VirtualMethodType**>((void*)(this)))[id](
const_cast<void*>(static_cast<const void*>(this)), arg_list...);
}
};
} // namespace omath::rev_eng

View File

@@ -16,15 +16,42 @@ echo "[*] Output dir: ${OUTPUT_DIR}"
# Find llvm tools - handle versioned names (Linux) and xcrun (macOS)
find_llvm_tool() {
local tool_name="$1"
# macOS: use xcrun
# First priority: derive from the actual compiler used by cmake (CMakeCache.txt).
# This guarantees the profraw format version matches the instrumented binary.
local cache_file="${BINARY_DIR}/CMakeCache.txt"
if [[ -f "$cache_file" ]]; then
local cmake_cxx
cmake_cxx=$(grep '^CMAKE_CXX_COMPILER:' "$cache_file" | cut -d= -f2)
if [[ -n "$cmake_cxx" && -x "$cmake_cxx" ]]; then
local tool_path
tool_path="$(dirname "$cmake_cxx")/${tool_name}"
if [[ -x "$tool_path" ]]; then
echo "$tool_path"
return 0
fi
fi
fi
# macOS: derive from xcrun clang as fallback
if [[ "$(uname)" == "Darwin" ]]; then
local clang_path
clang_path=$(xcrun --find clang 2>/dev/null)
if [[ -n "$clang_path" ]]; then
local tool_path
tool_path="$(dirname "$clang_path")/${tool_name}"
if [[ -x "$tool_path" ]]; then
echo "$tool_path"
return 0
fi
fi
# Fallback: xcrun
if xcrun --find "${tool_name}" &>/dev/null; then
echo "xcrun ${tool_name}"
return 0
fi
fi
# Try versioned names (Linux with LLVM 21, 20, 19, etc.)
for version in 21 20 19 18 17 ""; do
local versioned_name="${tool_name}${version:+-$version}"
@@ -33,7 +60,7 @@ find_llvm_tool() {
return 0
fi
done
echo ""
return 1
}
@@ -51,6 +78,18 @@ fi
echo "[*] Using: ${LLVM_PROFDATA}"
echo "[*] Using: ${LLVM_COV}"
# Print version info for debugging version mismatches
if [[ "$(uname)" == "Darwin" ]]; then
echo "[*] Default clang: $(xcrun clang --version 2>&1 | head -1)"
# Show actual compiler used by the build (from CMakeCache.txt if available)
CACHE_FILE="${BINARY_DIR}/CMakeCache.txt"
if [[ -f "$CACHE_FILE" ]]; then
ACTUAL_CXX=$(grep '^CMAKE_CXX_COMPILER:' "$CACHE_FILE" | cut -d= -f2)
echo "[*] Build compiler: ${ACTUAL_CXX} ($(${ACTUAL_CXX} --version 2>&1 | head -1))"
fi
echo "[*] profdata: $(${LLVM_PROFDATA} show --version 2>&1 | head -1 || true)"
fi
# Find test binary
if [[ -z "${TEST_BINARY}" ]]; then
for path in \

View File

@@ -3,6 +3,8 @@
//
#ifdef OMATH_ENABLE_LUA
#include "omath/lua/lua.hpp"
#include "omath/omath.hpp"
#include "omath/projection/error_codes.hpp"
#include <omath/engines/cry_engine/camera.hpp>
#include <omath/engines/frostbite_engine/camera.hpp>
#include <omath/engines/iw_engine/camera.hpp>
@@ -33,6 +35,8 @@ namespace
return "world position is out of screen bounds";
case omath::projection::Error::INV_VIEW_PROJ_MAT_DET_EQ_ZERO:
return "inverse view-projection matrix determinant is zero";
case omath::projection::Error::PERSPECTIVE_DIVIDER_LESS_EQ_ZERO:
return "perspective divider is less or equal to zero";
}
return "unknown error";
}

View File

@@ -21,7 +21,7 @@ namespace omath::projectile_prediction
const float bullet_gravity = m_gravity_constant * projectile.m_gravity_scale;
const float v0 = projectile.m_launch_speed;
const float v0_sqr = v0 * v0;
const Vector3 proj_origin = projectile.m_origin;
const Vector3 proj_origin = projectile.m_origin + projectile.m_launch_offset;
constexpr int SIMD_FACTOR = 8;
float current_time = m_simulation_time_step;
@@ -124,6 +124,110 @@ namespace omath::projectile_prediction
std::format("{} AVX2 feature is not enabled!", std::source_location::current().function_name()));
#endif
}
std::optional<AimAngles>
ProjPredEngineAvx2::maybe_calculate_aim_angles([[maybe_unused]] const Projectile& projectile,
[[maybe_unused]] const Target& target) const
{
#if defined(OMATH_USE_AVX2) && defined(__i386__) && defined(__x86_64__)
const float bullet_gravity = m_gravity_constant * projectile.m_gravity_scale;
const float v0 = projectile.m_launch_speed;
const Vector3 proj_origin = projectile.m_origin + projectile.m_launch_offset;
constexpr int SIMD_FACTOR = 8;
float current_time = m_simulation_time_step;
for (; current_time <= m_maximum_simulation_time; current_time += m_simulation_time_step * SIMD_FACTOR)
{
const __m256 times
= _mm256_setr_ps(current_time, current_time + m_simulation_time_step,
current_time + m_simulation_time_step * 2, current_time + m_simulation_time_step * 3,
current_time + m_simulation_time_step * 4, current_time + m_simulation_time_step * 5,
current_time + m_simulation_time_step * 6, current_time + m_simulation_time_step * 7);
const __m256 target_x
= _mm256_fmadd_ps(_mm256_set1_ps(target.m_velocity.x), times, _mm256_set1_ps(target.m_origin.x));
const __m256 target_y
= _mm256_fmadd_ps(_mm256_set1_ps(target.m_velocity.y), times, _mm256_set1_ps(target.m_origin.y));
const __m256 times_sq = _mm256_mul_ps(times, times);
const __m256 target_z = _mm256_fmadd_ps(_mm256_set1_ps(target.m_velocity.z), times,
_mm256_fnmadd_ps(_mm256_set1_ps(0.5f * m_gravity_constant), times_sq,
_mm256_set1_ps(target.m_origin.z)));
const __m256 delta_x = _mm256_sub_ps(target_x, _mm256_set1_ps(proj_origin.x));
const __m256 delta_y = _mm256_sub_ps(target_y, _mm256_set1_ps(proj_origin.y));
const __m256 d_sqr = _mm256_add_ps(_mm256_mul_ps(delta_x, delta_x), _mm256_mul_ps(delta_y, delta_y));
const __m256 delta_z = _mm256_sub_ps(target_z, _mm256_set1_ps(proj_origin.z));
const __m256 bg_times_sq = _mm256_mul_ps(_mm256_set1_ps(bullet_gravity), times_sq);
const __m256 term = _mm256_add_ps(delta_z, _mm256_mul_ps(_mm256_set1_ps(0.5f), bg_times_sq));
const __m256 term_sq = _mm256_mul_ps(term, term);
const __m256 numerator = _mm256_add_ps(d_sqr, term_sq);
const __m256 denominator = _mm256_add_ps(times_sq, _mm256_set1_ps(1e-8f));
const __m256 required_v0_sqr = _mm256_div_ps(numerator, denominator);
const __m256 v0_sqr_vec = _mm256_set1_ps(v0 * v0 + 1e-3f);
const __m256 mask = _mm256_cmp_ps(required_v0_sqr, v0_sqr_vec, _CMP_LE_OQ);
const unsigned valid_mask = _mm256_movemask_ps(mask);
if (!valid_mask)
continue;
alignas(32) float valid_times[SIMD_FACTOR];
_mm256_store_ps(valid_times, times);
for (int i = 0; i < SIMD_FACTOR; ++i)
{
if (!(valid_mask & (1 << i)))
continue;
const float candidate_time = valid_times[i];
if (candidate_time > m_maximum_simulation_time)
continue;
for (float fine_time = candidate_time - m_simulation_time_step * 2;
fine_time <= candidate_time + m_simulation_time_step * 2; fine_time += m_simulation_time_step)
{
if (fine_time < 0)
continue;
Vector3 target_pos = target.m_origin + target.m_velocity * fine_time;
if (target.m_is_airborne)
target_pos.z -= 0.5f * m_gravity_constant * fine_time * fine_time;
const auto pitch = calculate_pitch(proj_origin, target_pos, bullet_gravity, v0, fine_time);
if (!pitch)
continue;
const Vector3 delta = target_pos - projectile.m_origin;
const float yaw = angles::radians_to_degrees(std::atan2(delta.y, delta.x));
return AimAngles{*pitch, yaw};
}
}
}
for (; current_time <= m_maximum_simulation_time; current_time += m_simulation_time_step)
{
Vector3 target_pos = target.m_origin + target.m_velocity * current_time;
if (target.m_is_airborne)
target_pos.z -= 0.5f * m_gravity_constant * current_time * current_time;
const auto pitch = calculate_pitch(proj_origin, target_pos, bullet_gravity, v0, current_time);
if (!pitch)
continue;
const Vector3 delta = target_pos - projectile.m_origin;
const float yaw = angles::radians_to_degrees(std::atan2(delta.y, delta.x));
return AimAngles{*pitch, yaw};
}
return std::nullopt;
#else
throw std::runtime_error(
std::format("{} AVX2 feature is not enabled!", std::source_location::current().function_name()));
#endif
}
ProjPredEngineAvx2::ProjPredEngineAvx2(const float gravity_constant, const float simulation_time_step,
const float maximum_simulation_time)
: m_gravity_constant(gravity_constant), m_simulation_time_step(simulation_time_step),

View File

@@ -20,6 +20,8 @@
#include <omath/engines/unreal_engine/traits/mesh_trait.hpp>
#include <omath/engines/unreal_engine/traits/camera_trait.hpp>
#include <omath/engines/source_engine/traits/pred_engine_trait.hpp>
#include <omath/projectile_prediction/projectile.hpp>
#include <omath/projectile_prediction/target.hpp>
#include <optional>
@@ -35,6 +37,132 @@ static void expect_matrix_near(const MatT& a, const MatT& b, float eps = 1e-5f)
EXPECT_NEAR(a.at(r, c), b.at(r, c), eps);
}
// ── Launch offset tests for all engines ──────────────────────────────────────
#include <omath/engines/cry_engine/traits/pred_engine_trait.hpp>
// Helper: verify that zero offset matches default-initialized offset behavior
template<typename Trait>
static void verify_launch_offset_at_time_zero(const Vector3<float>& origin, const Vector3<float>& offset)
{
projectile_prediction::Projectile p;
p.m_origin = origin;
p.m_launch_offset = offset;
p.m_launch_speed = 100.f;
p.m_gravity_scale = 1.f;
const auto pos = Trait::predict_projectile_position(p, 0.f, 0.f, 0.f, 9.81f);
const auto expected = origin + offset;
EXPECT_NEAR(pos.x, expected.x, 1e-4f);
EXPECT_NEAR(pos.y, expected.y, 1e-4f);
EXPECT_NEAR(pos.z, expected.z, 1e-4f);
}
template<typename Trait>
static void verify_zero_offset_matches_default()
{
projectile_prediction::Projectile p;
p.m_origin = {10.f, 20.f, 30.f};
p.m_launch_offset = {0.f, 0.f, 0.f};
p.m_launch_speed = 50.f;
p.m_gravity_scale = 1.f;
projectile_prediction::Projectile p2;
p2.m_origin = {10.f, 20.f, 30.f};
p2.m_launch_speed = 50.f;
p2.m_gravity_scale = 1.f;
const auto pos1 = Trait::predict_projectile_position(p, 15.f, 30.f, 1.f, 9.81f);
const auto pos2 = Trait::predict_projectile_position(p2, 15.f, 30.f, 1.f, 9.81f);
#if defined(__x86_64__) || defined(_M_X64) || defined(__aarch64__) || defined(_M_ARM64)
constexpr float tol = 1e-6f;
#else
constexpr float tol = 1e-4f;
#endif
EXPECT_NEAR(pos1.x, pos2.x, tol);
EXPECT_NEAR(pos1.y, pos2.y, tol);
EXPECT_NEAR(pos1.z, pos2.z, tol);
}
TEST(LaunchOffsetTests, Source_OffsetAtTimeZero)
{
verify_launch_offset_at_time_zero<source_engine::PredEngineTrait>({0, 0, 0}, {5, 3, -2});
}
TEST(LaunchOffsetTests, Source_ZeroOffsetMatchesDefault)
{
verify_zero_offset_matches_default<source_engine::PredEngineTrait>();
}
TEST(LaunchOffsetTests, Frostbite_OffsetAtTimeZero)
{
verify_launch_offset_at_time_zero<frostbite_engine::PredEngineTrait>({0, 0, 0}, {5, 3, -2});
}
TEST(LaunchOffsetTests, Frostbite_ZeroOffsetMatchesDefault)
{
verify_zero_offset_matches_default<frostbite_engine::PredEngineTrait>();
}
TEST(LaunchOffsetTests, IW_OffsetAtTimeZero)
{
verify_launch_offset_at_time_zero<iw_engine::PredEngineTrait>({0, 0, 0}, {5, 3, -2});
}
TEST(LaunchOffsetTests, IW_ZeroOffsetMatchesDefault)
{
verify_zero_offset_matches_default<iw_engine::PredEngineTrait>();
}
TEST(LaunchOffsetTests, OpenGL_OffsetAtTimeZero)
{
verify_launch_offset_at_time_zero<opengl_engine::PredEngineTrait>({0, 0, 0}, {5, 3, -2});
}
TEST(LaunchOffsetTests, OpenGL_ZeroOffsetMatchesDefault)
{
verify_zero_offset_matches_default<opengl_engine::PredEngineTrait>();
}
TEST(LaunchOffsetTests, Unity_OffsetAtTimeZero)
{
verify_launch_offset_at_time_zero<unity_engine::PredEngineTrait>({0, 0, 0}, {5, 3, -2});
}
TEST(LaunchOffsetTests, Unity_ZeroOffsetMatchesDefault)
{
verify_zero_offset_matches_default<unity_engine::PredEngineTrait>();
}
TEST(LaunchOffsetTests, Unreal_OffsetAtTimeZero)
{
verify_launch_offset_at_time_zero<unreal_engine::PredEngineTrait>({0, 0, 0}, {5, 3, -2});
}
TEST(LaunchOffsetTests, Unreal_ZeroOffsetMatchesDefault)
{
verify_zero_offset_matches_default<unreal_engine::PredEngineTrait>();
}
TEST(LaunchOffsetTests, CryEngine_OffsetAtTimeZero)
{
verify_launch_offset_at_time_zero<cry_engine::PredEngineTrait>({0, 0, 0}, {5, 3, -2});
}
TEST(LaunchOffsetTests, CryEngine_ZeroOffsetMatchesDefault)
{
verify_zero_offset_matches_default<cry_engine::PredEngineTrait>();
}
// Test that offset shifts the projectile position at t>0 as well
TEST(LaunchOffsetTests, OffsetShiftsTrajectory)
{
projectile_prediction::Projectile p_no_offset;
p_no_offset.m_origin = {0.f, 0.f, 0.f};
p_no_offset.m_launch_speed = 100.f;
p_no_offset.m_gravity_scale = 1.f;
projectile_prediction::Projectile p_with_offset;
p_with_offset.m_origin = {0.f, 0.f, 0.f};
p_with_offset.m_launch_offset = {10.f, 5.f, -3.f};
p_with_offset.m_launch_speed = 100.f;
p_with_offset.m_gravity_scale = 1.f;
const auto pos1 = source_engine::PredEngineTrait::predict_projectile_position(p_no_offset, 20.f, 45.f, 2.f, 9.81f);
const auto pos2 = source_engine::PredEngineTrait::predict_projectile_position(p_with_offset, 20.f, 45.f, 2.f, 9.81f);
// The difference should be exactly the launch offset
EXPECT_NEAR(pos2.x - pos1.x, 10.f, 1e-4f);
EXPECT_NEAR(pos2.y - pos1.y, 5.f, 1e-4f);
EXPECT_NEAR(pos2.z - pos1.z, -3.f, 1e-4f);
}
// Generic tests for PredEngineTrait behaviour across engines
TEST(TraitTests, Frostbite_Pred_And_Mesh_And_Camera)
{

View File

@@ -53,6 +53,47 @@ TEST(PredEngineTrait, CalcViewpointFromAngles)
EXPECT_NEAR(vp.z, 10.f, 1e-6f);
}
TEST(PredEngineTrait, PredictProjectilePositionWithLaunchOffset)
{
projectile_prediction::Projectile p;
p.m_origin = {0.f, 0.f, 0.f};
p.m_launch_offset = {5.f, 3.f, -2.f};
p.m_launch_speed = 10.f;
p.m_gravity_scale = 1.f;
// At time=0, projectile should be at launch_pos = origin + offset
const auto pos_t0 = PredEngineTrait::predict_projectile_position(p, 0.f, 0.f, 0.f, 9.81f);
EXPECT_NEAR(pos_t0.x, 5.f, 1e-4f);
EXPECT_NEAR(pos_t0.y, 3.f, 1e-4f);
EXPECT_NEAR(pos_t0.z, -2.f, 1e-4f);
// At time=1 with zero pitch/yaw, should travel along X from the offset position
const auto pos_t1 = PredEngineTrait::predict_projectile_position(p, 0.f, 0.f, 1.f, 9.81f);
EXPECT_NEAR(pos_t1.x, 5.f + 10.f, 1e-3f);
EXPECT_NEAR(pos_t1.y, 3.f, 1e-3f);
EXPECT_NEAR(pos_t1.z, -2.f - 9.81f * 0.5f, 1e-3f);
}
TEST(PredEngineTrait, ZeroLaunchOffsetMatchesOriginalBehavior)
{
projectile_prediction::Projectile p;
p.m_origin = {10.f, 20.f, 30.f};
p.m_launch_offset = {0.f, 0.f, 0.f};
p.m_launch_speed = 15.f;
p.m_gravity_scale = 0.5f;
projectile_prediction::Projectile p_no_offset;
p_no_offset.m_origin = {10.f, 20.f, 30.f};
p_no_offset.m_launch_speed = 15.f;
p_no_offset.m_gravity_scale = 0.5f;
const auto pos1 = PredEngineTrait::predict_projectile_position(p, 30.f, 45.f, 2.f, 9.81f);
const auto pos2 = PredEngineTrait::predict_projectile_position(p_no_offset, 30.f, 45.f, 2.f, 9.81f);
EXPECT_NEAR(pos1.x, pos2.x, 1e-6f);
EXPECT_NEAR(pos1.y, pos2.y, 1e-6f);
EXPECT_NEAR(pos1.z, pos2.z, 1e-6f);
}
TEST(PredEngineTrait, DirectAngles)
{
constexpr Vector3<float> origin{0.f, 0.f, 0.f};

View File

@@ -16,3 +16,280 @@ TEST(UnitTestPrediction, PredictionTest)
EXPECT_NEAR(-42.547142, pitch.as_degrees(), 0.01f);
EXPECT_NEAR(-1.181189, yaw.as_degrees(), 0.01f);
}
// Helper: verify aim_angles match angles derived from aim_point via CameraTrait
static void expect_angles_match_aim_point(const omath::projectile_prediction::Projectile& proj,
const omath::projectile_prediction::Target& target,
float gravity, float step, float max_time, float tolerance,
float angle_eps = 0.01f)
{
const omath::projectile_prediction::ProjPredEngineLegacy engine(gravity, step, max_time, tolerance);
const auto aim_point = engine.maybe_calculate_aim_point(proj, target);
const auto aim_angles = engine.maybe_calculate_aim_angles(proj, target);
ASSERT_TRUE(aim_point.has_value()) << "aim_point should have a solution";
ASSERT_TRUE(aim_angles.has_value()) << "aim_angles should have a solution";
// Source engine CameraTrait: pitch = -asin(dir.z), yaw = atan2(dir.y, dir.x)
// PredEngineTrait: pitch = asin(delta.z / dist), yaw = atan2(delta.y, delta.x)
// So aim_angles.pitch == -camera_pitch, aim_angles.yaw == camera_yaw
const auto [cam_pitch, cam_yaw, cam_roll] =
omath::source_engine::CameraTrait::calc_look_at_angle(proj.m_origin, aim_point.value());
EXPECT_NEAR(aim_angles->pitch, -cam_pitch.as_degrees(), angle_eps)
<< "pitch from aim_angles must match pitch derived from aim_point";
EXPECT_NEAR(aim_angles->yaw, cam_yaw.as_degrees(), angle_eps)
<< "yaw from aim_angles must match yaw derived from aim_point";
}
TEST(UnitTestPrediction, AimAnglesMatchAimPoint_StaticTarget)
{
constexpr omath::projectile_prediction::Target target{
.m_origin = {100, 0, 90}, .m_velocity = {0, 0, 0}, .m_is_airborne = false};
constexpr omath::projectile_prediction::Projectile proj = {
.m_origin = {3, 2, 1}, .m_launch_speed = 5000, .m_gravity_scale = 0.4};
expect_angles_match_aim_point(proj, target, 400, 1.f / 1000.f, 50, 5.f);
}
TEST(UnitTestPrediction, AimAnglesMatchAimPoint_MovingTarget)
{
constexpr omath::projectile_prediction::Target target{
.m_origin = {500, 100, 0}, .m_velocity = {-50, 20, 0}, .m_is_airborne = false};
constexpr omath::projectile_prediction::Projectile proj = {
.m_origin = {0, 0, 0}, .m_launch_speed = 3000, .m_gravity_scale = 1.0};
expect_angles_match_aim_point(proj, target, 800, 1.f / 500.f, 30, 10.f);
}
TEST(UnitTestPrediction, AimAnglesMatchAimPoint_AirborneTarget)
{
constexpr omath::projectile_prediction::Target target{
.m_origin = {200, 50, 300}, .m_velocity = {10, -5, -20}, .m_is_airborne = true};
constexpr omath::projectile_prediction::Projectile proj = {
.m_origin = {0, 0, 0}, .m_launch_speed = 4000, .m_gravity_scale = 0.5};
expect_angles_match_aim_point(proj, target, 400, 1.f / 1000.f, 50, 10.f);
}
TEST(UnitTestPrediction, AimAnglesMatchAimPoint_HighArc)
{
// Target nearly directly above — high pitch angle
constexpr omath::projectile_prediction::Target target{
.m_origin = {10, 0, 500}, .m_velocity = {0, 0, 0}, .m_is_airborne = false};
constexpr omath::projectile_prediction::Projectile proj = {
.m_origin = {0, 0, 0}, .m_launch_speed = 5000, .m_gravity_scale = 0.3};
expect_angles_match_aim_point(proj, target, 400, 1.f / 1000.f, 50, 5.f);
}
TEST(UnitTestPrediction, AimAnglesMatchAimPoint_NegativeYaw)
{
// Target behind and to the left — negative yaw quadrant
constexpr omath::projectile_prediction::Target target{
.m_origin = {-200, -150, 10}, .m_velocity = {0, 0, 0}, .m_is_airborne = false};
constexpr omath::projectile_prediction::Projectile proj = {
.m_origin = {0, 0, 0}, .m_launch_speed = 5000, .m_gravity_scale = 0.4};
expect_angles_match_aim_point(proj, target, 400, 1.f / 1000.f, 50, 5.f);
}
TEST(UnitTestPrediction, AimAnglesMatchAimPoint_WithLaunchOffset)
{
constexpr omath::projectile_prediction::Target target{
.m_origin = {200, 0, 50}, .m_velocity = {0, 0, 0}, .m_is_airborne = false};
const omath::projectile_prediction::Projectile proj = {
.m_origin = {0, 0, 0}, .m_launch_offset = {5, 0, -3}, .m_launch_speed = 5000, .m_gravity_scale = 0.4};
expect_angles_match_aim_point(proj, target, 400, 1.f / 1000.f, 50, 5.f);
}
// Helper: simulate projectile flight using aim_angles and verify it reaches the target.
// Steps the projectile forward in small increments, simultaneously predicts target position,
// and checks that the minimum distance is within hit_tolerance.
static void expect_projectile_hits_target(const omath::projectile_prediction::Projectile& proj,
const omath::projectile_prediction::Target& target,
float gravity, float engine_step, float max_time, float engine_tolerance,
float hit_tolerance, float sim_step = 1.f / 2000.f)
{
using Trait = omath::source_engine::PredEngineTrait;
const omath::projectile_prediction::ProjPredEngineLegacy engine(gravity, engine_step, max_time, engine_tolerance);
const auto aim_angles = engine.maybe_calculate_aim_angles(proj, target);
ASSERT_TRUE(aim_angles.has_value()) << "engine must find a solution";
float min_dist = std::numeric_limits<float>::max();
float best_time = 0.f;
for (float t = 0.f; t <= max_time; t += sim_step)
{
const auto proj_pos = Trait::predict_projectile_position(proj, aim_angles->pitch, aim_angles->yaw, t, gravity);
const auto tgt_pos = Trait::predict_target_position(target, t, gravity);
const float dist = proj_pos.distance_to(tgt_pos);
if (dist < min_dist)
{
min_dist = dist;
best_time = t;
}
// Early exit once distance starts increasing significantly after approaching
if (dist > min_dist + hit_tolerance * 10.f && min_dist < hit_tolerance * 100.f)
break;
}
EXPECT_LE(min_dist, hit_tolerance)
<< "Projectile must reach target. Closest approach: " << min_dist
<< " at t=" << best_time;
}
// ── Simulation hit tests: no launch offset ─────────────────────────────────
TEST(ProjectileSimulation, HitsStaticTarget_NoOffset)
{
constexpr omath::projectile_prediction::Target target{
.m_origin = {100, 0, 90}, .m_velocity = {0, 0, 0}, .m_is_airborne = false};
constexpr omath::projectile_prediction::Projectile proj = {
.m_origin = {3, 2, 1}, .m_launch_speed = 5000, .m_gravity_scale = 0.4};
expect_projectile_hits_target(proj, target, 400, 1.f / 1000.f, 50, 5.f, 10.f);
}
TEST(ProjectileSimulation, HitsMovingTarget_NoOffset)
{
constexpr omath::projectile_prediction::Target target{
.m_origin = {500, 100, 0}, .m_velocity = {-50, 20, 0}, .m_is_airborne = false};
constexpr omath::projectile_prediction::Projectile proj = {
.m_origin = {0, 0, 0}, .m_launch_speed = 3000, .m_gravity_scale = 1.0};
expect_projectile_hits_target(proj, target, 800, 1.f / 500.f, 30, 10.f, 15.f);
}
TEST(ProjectileSimulation, HitsAirborneTarget_NoOffset)
{
constexpr omath::projectile_prediction::Target target{
.m_origin = {200, 50, 300}, .m_velocity = {10, -5, -20}, .m_is_airborne = true};
constexpr omath::projectile_prediction::Projectile proj = {
.m_origin = {0, 0, 0}, .m_launch_speed = 4000, .m_gravity_scale = 0.5};
expect_projectile_hits_target(proj, target, 400, 1.f / 1000.f, 50, 10.f, 15.f);
}
TEST(ProjectileSimulation, HitsHighTarget_NoOffset)
{
constexpr omath::projectile_prediction::Target target{
.m_origin = {10, 0, 500}, .m_velocity = {0, 0, 0}, .m_is_airborne = false};
constexpr omath::projectile_prediction::Projectile proj = {
.m_origin = {0, 0, 0}, .m_launch_speed = 5000, .m_gravity_scale = 0.3};
expect_projectile_hits_target(proj, target, 400, 1.f / 1000.f, 50, 5.f, 10.f);
}
TEST(ProjectileSimulation, HitsNegativeYawTarget_NoOffset)
{
constexpr omath::projectile_prediction::Target target{
.m_origin = {-200, -150, 10}, .m_velocity = {0, 0, 0}, .m_is_airborne = false};
constexpr omath::projectile_prediction::Projectile proj = {
.m_origin = {0, 0, 0}, .m_launch_speed = 5000, .m_gravity_scale = 0.4};
expect_projectile_hits_target(proj, target, 400, 1.f / 1000.f, 50, 5.f, 10.f);
}
// ── Simulation hit tests: with launch offset ────────────────────────────────
TEST(ProjectileSimulation, HitsStaticTarget_SmallOffset)
{
constexpr omath::projectile_prediction::Target target{
.m_origin = {200, 0, 50}, .m_velocity = {0, 0, 0}, .m_is_airborne = false};
const omath::projectile_prediction::Projectile proj = {
.m_origin = {0, 0, 0}, .m_launch_offset = {5, 0, -3}, .m_launch_speed = 5000, .m_gravity_scale = 0.4};
expect_projectile_hits_target(proj, target, 400, 1.f / 1000.f, 50, 5.f, 10.f);
}
TEST(ProjectileSimulation, HitsStaticTarget_LargeXOffset)
{
constexpr omath::projectile_prediction::Target target{
.m_origin = {300, 100, 0}, .m_velocity = {0, 0, 0}, .m_is_airborne = false};
const omath::projectile_prediction::Projectile proj = {
.m_origin = {0, 0, 0}, .m_launch_offset = {20, 0, 0}, .m_launch_speed = 5000, .m_gravity_scale = 0.4};
expect_projectile_hits_target(proj, target, 400, 1.f / 1000.f, 50, 5.f, 10.f);
}
TEST(ProjectileSimulation, HitsStaticTarget_LargeYOffset)
{
constexpr omath::projectile_prediction::Target target{
.m_origin = {150, -200, 30}, .m_velocity = {0, 0, 0}, .m_is_airborne = false};
const omath::projectile_prediction::Projectile proj = {
.m_origin = {0, 0, 0}, .m_launch_offset = {0, 15, 0}, .m_launch_speed = 5000, .m_gravity_scale = 0.4};
expect_projectile_hits_target(proj, target, 400, 1.f / 1000.f, 50, 5.f, 10.f);
}
TEST(ProjectileSimulation, HitsStaticTarget_LargeZOffset)
{
constexpr omath::projectile_prediction::Target target{
.m_origin = {100, 0, 200}, .m_velocity = {0, 0, 0}, .m_is_airborne = false};
const omath::projectile_prediction::Projectile proj = {
.m_origin = {0, 0, 0}, .m_launch_offset = {0, 0, -10}, .m_launch_speed = 5000, .m_gravity_scale = 0.4};
expect_projectile_hits_target(proj, target, 400, 1.f / 1000.f, 50, 5.f, 10.f);
}
TEST(ProjectileSimulation, HitsStaticTarget_AllAxesOffset)
{
constexpr omath::projectile_prediction::Target target{
.m_origin = {250, 80, 60}, .m_velocity = {0, 0, 0}, .m_is_airborne = false};
const omath::projectile_prediction::Projectile proj = {
.m_origin = {10, 5, 20}, .m_launch_offset = {8, -4, -6}, .m_launch_speed = 5000, .m_gravity_scale = 0.4};
expect_projectile_hits_target(proj, target, 400, 1.f / 1000.f, 50, 5.f, 10.f);
}
TEST(ProjectileSimulation, HitsMovingTarget_WithOffset)
{
constexpr omath::projectile_prediction::Target target{
.m_origin = {400, 0, 50}, .m_velocity = {-30, 10, 5}, .m_is_airborne = false};
const omath::projectile_prediction::Projectile proj = {
.m_origin = {0, 0, 0}, .m_launch_offset = {10, -5, 2}, .m_launch_speed = 3000, .m_gravity_scale = 0.8};
expect_projectile_hits_target(proj, target, 800, 1.f / 500.f, 30, 10.f, 15.f);
}
TEST(ProjectileSimulation, HitsAirborneTarget_WithOffset)
{
constexpr omath::projectile_prediction::Target target{
.m_origin = {150, 80, 250}, .m_velocity = {5, -10, -30}, .m_is_airborne = true};
const omath::projectile_prediction::Projectile proj = {
.m_origin = {0, 0, 50}, .m_launch_offset = {3, 7, -5}, .m_launch_speed = 4000, .m_gravity_scale = 0.5};
expect_projectile_hits_target(proj, target, 400, 1.f / 1000.f, 50, 10.f, 15.f);
}
TEST(ProjectileSimulation, HitsNegativeYawTarget_WithOffset)
{
constexpr omath::projectile_prediction::Target target{
.m_origin = {-200, -150, 10}, .m_velocity = {0, 0, 0}, .m_is_airborne = false};
const omath::projectile_prediction::Projectile proj = {
.m_origin = {0, 0, 0}, .m_launch_offset = {-5, 3, 2}, .m_launch_speed = 5000, .m_gravity_scale = 0.4};
expect_projectile_hits_target(proj, target, 400, 1.f / 1000.f, 50, 5.f, 10.f);
}
TEST(UnitTestPrediction, AimAnglesReturnsNulloptWhenNoSolution)
{
constexpr omath::projectile_prediction::Target target{
.m_origin = {100000, 0, 0}, .m_velocity = {0, 0, 0}, .m_is_airborne = false};
constexpr omath::projectile_prediction::Projectile proj = {
.m_origin = {0, 0, 0}, .m_launch_speed = 1, .m_gravity_scale = 1};
const omath::projectile_prediction::ProjPredEngineLegacy engine(9.81f, 0.1f, 2.f, 5.f);
const auto aim_point = engine.maybe_calculate_aim_point(proj, target);
const auto aim_angles = engine.maybe_calculate_aim_angles(proj, target);
EXPECT_FALSE(aim_point.has_value());
EXPECT_FALSE(aim_angles.has_value());
}

View File

@@ -46,6 +46,22 @@ TEST(ProjPredLegacyMore, ZeroGravityUsesDirectPitchAndReturnsViewpoint)
EXPECT_NEAR(v.z, 3.f, 1e-6f);
}
TEST(ProjPredLegacyMore, ZeroGravityAimAnglesReturnsPitchAndYaw)
{
constexpr Projectile proj{ .m_origin = {0.f, 0.f, 0.f}, .m_launch_speed = 10.f, .m_gravity_scale = 0.f };
constexpr Target target{ .m_origin = {100.f, 0.f, 0.f}, .m_velocity = {0.f,0.f,0.f}, .m_is_airborne = false };
using Engine = omath::projectile_prediction::ProjPredEngineLegacy<FakeEngineZeroGravity>;
const Engine engine(9.8f, 0.1f, 5.f, 1e-3f);
const auto res = engine.maybe_calculate_aim_angles(proj, target);
ASSERT_TRUE(res.has_value());
// FakeEngineZeroGravity::calc_direct_pitch_angle returns 12.5f
EXPECT_NEAR(res->pitch, 12.5f, 1e-6f);
// FakeEngineZeroGravity::calc_direct_yaw_angle returns 0.f
EXPECT_NEAR(res->yaw, 0.f, 1e-6f);
}
// Fake trait producing no valid launch angle (root < 0)
struct FakeEngineNoSolution
{
@@ -69,6 +85,9 @@ TEST(ProjPredLegacyMore, NoSolutionRootReturnsNullopt)
const auto res = engine.maybe_calculate_aim_point(proj, target);
EXPECT_FALSE(res.has_value());
const auto angles_res = engine.maybe_calculate_aim_angles(proj, target);
EXPECT_FALSE(angles_res.has_value());
}
// Fake trait where an angle exists but the projectile does not reach target (miss)

View File

@@ -50,6 +50,126 @@ TEST(UnitTestProjection, ScreenToNdcBottomLeft)
EXPECT_NEAR(ndc_bottom_left.y, 0.519615293f, 0.0001f);
}
TEST(UnitTestProjection, UnclippedWorldToScreenInBounds)
{
constexpr auto fov = omath::Angle<float, 0.f, 180.f, omath::AngleFlags::Clamped>::from_degrees(90.f);
const auto cam = omath::source_engine::Camera({0, 0, 0}, omath::source_engine::ViewAngles{}, {1920.f, 1080.f}, fov,
0.01f, 1000.f);
const auto projected = cam.world_to_screen_unclipped({1000.f, 0, 50.f});
ASSERT_TRUE(projected.has_value());
EXPECT_NEAR(projected->x, 960.f, 0.001f);
EXPECT_NEAR(projected->y, 504.f, 0.001f);
}
TEST(UnitTestProjection, UnclippedWorldToScreenMatchesWorldToScreenWhenInBounds)
{
constexpr auto fov = omath::Angle<float, 0.f, 180.f, omath::AngleFlags::Clamped>::from_degrees(90.f);
const auto cam = omath::source_engine::Camera({0, 0, 0}, omath::source_engine::ViewAngles{}, {1920.f, 1080.f}, fov,
0.01f, 1000.f);
const auto w2s = cam.world_to_screen({1000.f, 0, 50.f});
const auto no_clip = cam.world_to_screen_unclipped({1000.f, 0, 50.f});
ASSERT_TRUE(w2s.has_value());
ASSERT_TRUE(no_clip.has_value());
EXPECT_NEAR(w2s->x, no_clip->x, 0.001f);
EXPECT_NEAR(w2s->y, no_clip->y, 0.001f);
EXPECT_NEAR(w2s->z, no_clip->z, 0.001f);
}
TEST(UnitTestProjection, UnclippedWorldToScreenRejectsBehindCamera)
{
constexpr auto fov = omath::Angle<float, 0.f, 180.f, omath::AngleFlags::Clamped>::from_degrees(90.f);
const auto cam = omath::source_engine::Camera({0, 0, 0}, omath::source_engine::ViewAngles{}, {1920.f, 1080.f}, fov,
0.01f, 1000.f);
const auto projected = cam.world_to_screen_unclipped({-1000.f, 0, 0});
EXPECT_FALSE(projected.has_value());
EXPECT_EQ(projected.error(), omath::projection::Error::PERSPECTIVE_DIVIDER_LESS_EQ_ZERO);
}
TEST(UnitTestProjection, UnclippedWorldToScreenAllowsOutOfBoundsNdc)
{
constexpr auto fov = omath::Angle<float, 0.f, 180.f, omath::AngleFlags::Clamped>::from_degrees(90.f);
const auto cam = omath::source_engine::Camera({0, 0, 0}, omath::source_engine::ViewAngles{}, {1920.f, 1080.f}, fov,
0.01f, 1000.f);
// Point far to the side exceeds NDC [-1,1] bounds but unclipped returns it anyway
const auto projected = cam.world_to_screen_unclipped({100.f, 5000.f, 0});
EXPECT_TRUE(projected.has_value());
}
TEST(UnitTestProjection, WorldToScreenRejectsOutOfBoundsNdc)
{
constexpr auto fov = omath::Angle<float, 0.f, 180.f, omath::AngleFlags::Clamped>::from_degrees(90.f);
const auto cam = omath::source_engine::Camera({0, 0, 0}, omath::source_engine::ViewAngles{}, {1920.f, 1080.f}, fov,
0.01f, 1000.f);
// Same point that unclipped allows — clipped world_to_screen rejects it
const auto projected = cam.world_to_screen({100.f, 5000.f, 0});
EXPECT_FALSE(projected.has_value());
}
TEST(UnitTestProjection, UnclippedWorldToScreenBottomLeftCorner)
{
constexpr auto fov = omath::Angle<float, 0.f, 180.f, omath::AngleFlags::Clamped>::from_degrees(90.f);
const auto cam = omath::source_engine::Camera({0, 0, 0}, omath::source_engine::ViewAngles{}, {1920.f, 1080.f}, fov,
0.01f, 1000.f);
using ScreenStart = omath::source_engine::Camera::ScreenStart;
const auto top_left = cam.world_to_screen_unclipped<ScreenStart::TOP_LEFT_CORNER>({1000.f, 0, 50.f});
const auto bottom_left = cam.world_to_screen_unclipped<ScreenStart::BOTTOM_LEFT_CORNER>({1000.f, 0, 50.f});
ASSERT_TRUE(top_left.has_value());
ASSERT_TRUE(bottom_left.has_value());
// X should be identical, Y should differ (mirrored around center)
EXPECT_NEAR(top_left->x, bottom_left->x, 0.001f);
EXPECT_NEAR(top_left->y + bottom_left->y, 1080.f, 0.001f);
}
TEST(UnitTestProjection, UnclippedWorldToScreenRoundTrip)
{
std::mt19937 gen(42);
std::uniform_real_distribution dist_fwd(100.f, 900.f);
std::uniform_real_distribution dist_side(-400.f, 400.f);
std::uniform_real_distribution dist_up(-200.f, 200.f);
constexpr auto fov = omath::Angle<float, 0.f, 180.f, omath::AngleFlags::Clamped>::from_degrees(90.f);
const auto cam = omath::source_engine::Camera({0, 0, 0}, omath::source_engine::ViewAngles{}, {1920.f, 1080.f}, fov,
0.01f, 1000.f);
for (int i = 0; i < 100; i++)
{
const omath::Vector3<float> world_pos{dist_fwd(gen), dist_side(gen), dist_up(gen)};
const auto screen = cam.world_to_screen_unclipped(world_pos);
if (!screen.has_value())
continue;
const auto back_to_world = cam.screen_to_world(screen.value());
ASSERT_TRUE(back_to_world.has_value());
const auto back_to_screen = cam.world_to_screen_unclipped(back_to_world.value());
ASSERT_TRUE(back_to_screen.has_value());
EXPECT_NEAR(screen->x, back_to_screen->x, 0.01f);
EXPECT_NEAR(screen->y, back_to_screen->y, 0.01f);
}
}
TEST(UnitTestProjection, UnclippedWorldToScreenUnityEngine)
{
constexpr auto fov = omath::projection::FieldOfView::from_degrees(60.f);
const auto cam = omath::unity_engine::Camera({0, 0, 0}, {}, {1280.f, 720.f}, fov, 0.03f, 1000.f);
using ScreenStart = omath::unity_engine::Camera::ScreenStart;
// Point directly in front
const auto projected = cam.world_to_screen_unclipped<ScreenStart::BOTTOM_LEFT_CORNER>({0, 0, 500.f});
ASSERT_TRUE(projected.has_value());
EXPECT_NEAR(projected->x, 640.f, 0.5f);
EXPECT_NEAR(projected->y, 360.f, 0.5f);
}
TEST(UnitTestProjection, ScreenToWorldTopLeftCorner)
{
std::mt19937 gen(std::random_device{}()); // Seed with a non-deterministic source

View File

@@ -20,6 +20,13 @@ public:
int m_health{123};
};
// Extract a raw function pointer from an object's vtable
inline const void* get_vtable_entry(const void* obj, const std::size_t index)
{
const auto vtable = *static_cast<void* const* const*>(obj);
return vtable[index];
}
class RevPlayer final : omath::rev_eng::InternalReverseEngineeredObject
{
public:
@@ -51,6 +58,17 @@ public:
{
return call_virtual_method<1, int>();
}
// Wrappers exposing call_method for testing — use vtable entries as known-good function pointers
int call_foo_via_ptr(const void* fn_ptr) const
{
return call_method<int>(fn_ptr);
}
int call_bar_via_ptr(const void* fn_ptr) const
{
return call_method<int>(fn_ptr);
}
};
TEST(unit_test_reverse_enineering, read_test)
@@ -64,4 +82,39 @@ TEST(unit_test_reverse_enineering, read_test)
EXPECT_EQ(player_original.bar(), player_reversed->rev_bar());
EXPECT_EQ(player_original.foo(), player_reversed->rev_foo());
EXPECT_EQ(player_original.bar(), player_reversed->rev_bar_const());
}
TEST(unit_test_reverse_enineering, call_method_with_vtable_ptr)
{
// Extract raw function pointers from Player's vtable, then call them via call_method
Player player;
const auto* rev = reinterpret_cast<const RevPlayer*>(&player);
const auto* foo_ptr = get_vtable_entry(&player, 0);
const auto* bar_ptr = get_vtable_entry(&player, 1);
EXPECT_EQ(player.foo(), rev->call_foo_via_ptr(foo_ptr));
EXPECT_EQ(player.bar(), rev->call_bar_via_ptr(bar_ptr));
EXPECT_EQ(1, rev->call_foo_via_ptr(foo_ptr));
EXPECT_EQ(2, rev->call_bar_via_ptr(bar_ptr));
}
TEST(unit_test_reverse_enineering, call_method_same_result_as_virtual)
{
// call_virtual_method delegates to call_method — both paths must agree
Player player;
const auto* rev = reinterpret_cast<const RevPlayer*>(&player);
EXPECT_EQ(rev->rev_foo(), rev->call_foo_via_ptr(get_vtable_entry(&player, 0)));
EXPECT_EQ(rev->rev_bar(), rev->call_bar_via_ptr(get_vtable_entry(&player, 1)));
}
TEST(unit_test_reverse_enineering, call_virtual_method_delegates_to_call_method)
{
Player player;
auto* rev = reinterpret_cast<RevPlayer*>(&player);
EXPECT_EQ(1, rev->rev_foo());
EXPECT_EQ(2, rev->rev_bar());
EXPECT_EQ(2, rev->rev_bar_const());
}

View File

@@ -0,0 +1,260 @@
//
// Created by claude on 19.03.2026.
//
#include <gtest/gtest.h>
#include <omath/algorithm/targeting.hpp>
#include <omath/engines/source_engine/camera.hpp>
#include <vector>
namespace
{
using Camera = omath::source_engine::Camera;
using ViewAngles = omath::source_engine::ViewAngles;
using Targets = std::vector<omath::Vector3<float>>;
using Iter = Targets::const_iterator;
using FilterSig = bool(const omath::Vector3<float>&);
constexpr auto k_fov = omath::Angle<float, 0.f, 180.f, omath::AngleFlags::Clamped>::from_degrees(90.f);
Camera make_camera(const omath::Vector3<float>& origin, float pitch_deg, float yaw_deg)
{
ViewAngles angles{
omath::source_engine::PitchAngle::from_degrees(pitch_deg),
omath::source_engine::YawAngle::from_degrees(yaw_deg),
omath::source_engine::RollAngle::from_degrees(0.f),
};
return Camera{origin, angles, {1920.f, 1080.f}, k_fov, 0.01f, 1000.f};
}
auto get_pos = [](const omath::Vector3<float>& v) -> const omath::Vector3<float>& { return v; };
Iter find_closest(const Iter begin, const Iter end, const Camera& camera)
{
return omath::algorithm::get_closest_target_by_fov<Camera, Iter, FilterSig>(
begin, end, camera, get_pos);
}
Iter find_nearest(const Iter begin, const Iter end, const omath::Vector3<float>& origin)
{
return omath::algorithm::get_closest_target_by_distance<Iter, FilterSig>(
begin, end, origin, get_pos);
}
}
TEST(unit_test_targeting, returns_end_for_empty_range)
{
const auto camera = make_camera({0, 0, 0}, 0.f, 0.f);
Targets targets;
EXPECT_EQ(find_closest(targets.cbegin(), targets.cend(), camera), targets.cend());
}
TEST(unit_test_targeting, single_target_returns_that_target)
{
const auto camera = make_camera({0, 0, 0}, 0.f, 0.f);
Targets targets = {{100.f, 0.f, 0.f}};
EXPECT_EQ(find_closest(targets.cbegin(), targets.cend(), camera), targets.cbegin());
}
TEST(unit_test_targeting, picks_closest_to_crosshair)
{
// Camera looking forward along +X (yaw=0, pitch=0 in source engine)
const auto camera = make_camera({0, 0, 0}, 0.f, 0.f);
Targets targets = {
{100.f, 50.f, 0.f}, // off to the side
{100.f, 1.f, 0.f}, // nearly on crosshair
{100.f, -30.f, 0.f}, // off to the other side
};
const auto result = find_closest(targets.cbegin(), targets.cend(), camera);
ASSERT_NE(result, targets.cend());
EXPECT_EQ(result, targets.cbegin() + 1);
}
TEST(unit_test_targeting, picks_closest_with_vertical_offset)
{
const auto camera = make_camera({0, 0, 0}, 0.f, 0.f);
Targets targets = {
{100.f, 0.f, 50.f}, // high above
{100.f, 0.f, 2.f}, // slightly above
{100.f, 0.f, 30.f}, // moderately above
};
const auto result = find_closest(targets.cbegin(), targets.cend(), camera);
ASSERT_NE(result, targets.cend());
EXPECT_EQ(result, targets.cbegin() + 1);
}
TEST(unit_test_targeting, respects_camera_direction)
{
// Camera looking along +Y (yaw=90)
const auto camera = make_camera({0, 0, 0}, 0.f, 90.f);
Targets targets = {
{100.f, 0.f, 0.f}, // to the side relative to camera facing +Y
{0.f, 100.f, 0.f}, // directly in front
};
const auto result = find_closest(targets.cbegin(), targets.cend(), camera);
ASSERT_NE(result, targets.cend());
EXPECT_EQ(result, targets.cbegin() + 1);
}
TEST(unit_test_targeting, equidistant_targets_returns_first)
{
const auto camera = make_camera({0, 0, 0}, 0.f, 0.f);
// Two targets symmetric about the forward axis — same angular distance
Targets targets = {
{100.f, 10.f, 0.f},
{100.f, -10.f, 0.f},
};
const auto result = find_closest(targets.cbegin(), targets.cend(), camera);
ASSERT_NE(result, targets.cend());
// First target should be selected (strict < means first wins on tie)
EXPECT_EQ(result, targets.cbegin());
}
TEST(unit_test_targeting, camera_pitch_affects_selection)
{
// Camera looking upward (pitch < 0)
const auto camera = make_camera({0, 0, 0}, -40.f, 0.f);
Targets targets = {
{100.f, 0.f, 0.f}, // on the horizon
{100.f, 0.f, 40.f}, // above, closer to where camera is looking
};
const auto result = find_closest(targets.cbegin(), targets.cend(), camera);
ASSERT_NE(result, targets.cend());
EXPECT_EQ(result, targets.cbegin() + 1);
}
TEST(unit_test_targeting, many_targets_picks_best)
{
const auto camera = make_camera({0, 0, 0}, 0.f, 0.f);
Targets targets = {
{100.f, 80.f, 80.f},
{100.f, 60.f, 60.f},
{100.f, 40.f, 40.f},
{100.f, 20.f, 20.f},
{100.f, 0.5f, 0.5f}, // closest to crosshair
{100.f, 10.f, 10.f},
{100.f, 30.f, 30.f},
};
const auto result = find_closest(targets.cbegin(), targets.cend(), camera);
ASSERT_NE(result, targets.cend());
EXPECT_EQ(result, targets.cbegin() + 4);
}
// ── get_closest_target_by_distance tests ────────────────────────────────────
TEST(unit_test_targeting, distance_returns_end_for_empty_range)
{
Targets targets;
EXPECT_EQ(find_nearest(targets.cbegin(), targets.cend(), {0, 0, 0}), targets.cend());
}
TEST(unit_test_targeting, distance_single_target)
{
Targets targets = {{50.f, 0.f, 0.f}};
EXPECT_EQ(find_nearest(targets.cbegin(), targets.cend(), {0, 0, 0}), targets.cbegin());
}
TEST(unit_test_targeting, distance_picks_nearest)
{
const omath::Vector3<float> origin{0.f, 0.f, 0.f};
Targets targets = {
{100.f, 0.f, 0.f}, // distance = 100
{10.f, 0.f, 0.f}, // distance = 10 (closest)
{50.f, 0.f, 0.f}, // distance = 50
};
const auto result = find_nearest(targets.cbegin(), targets.cend(), origin);
ASSERT_NE(result, targets.cend());
EXPECT_EQ(result, targets.cbegin() + 1);
}
TEST(unit_test_targeting, distance_considers_all_axes)
{
const omath::Vector3<float> origin{0.f, 0.f, 0.f};
Targets targets = {
{30.f, 30.f, 30.f}, // distance = sqrt(2700) ~ 51.96
{50.f, 0.f, 0.f}, // distance = 50
{0.f, 0.f, 10.f}, // distance = 10 (closest)
};
const auto result = find_nearest(targets.cbegin(), targets.cend(), origin);
ASSERT_NE(result, targets.cend());
EXPECT_EQ(result, targets.cbegin() + 2);
}
TEST(unit_test_targeting, distance_from_nonzero_origin)
{
const omath::Vector3<float> origin{100.f, 100.f, 100.f};
Targets targets = {
{0.f, 0.f, 0.f}, // distance = sqrt(30000) ~ 173
{105.f, 100.f, 100.f}, // distance = 5 (closest)
{200.f, 200.f, 200.f}, // distance = sqrt(30000) ~ 173
};
const auto result = find_nearest(targets.cbegin(), targets.cend(), origin);
ASSERT_NE(result, targets.cend());
EXPECT_EQ(result, targets.cbegin() + 1);
}
TEST(unit_test_targeting, distance_equidistant_returns_first)
{
const omath::Vector3<float> origin{0.f, 0.f, 0.f};
// Both targets at distance 100, symmetric
Targets targets = {
{100.f, 0.f, 0.f},
{-100.f, 0.f, 0.f},
};
const auto result = find_nearest(targets.cbegin(), targets.cend(), origin);
ASSERT_NE(result, targets.cend());
EXPECT_EQ(result, targets.cbegin());
}
TEST(unit_test_targeting, distance_many_targets)
{
const omath::Vector3<float> origin{0.f, 0.f, 0.f};
Targets targets = {
{500.f, 0.f, 0.f},
{200.f, 200.f, 0.f},
{100.f, 100.f, 100.f},
{50.f, 50.f, 50.f},
{1.f, 1.f, 1.f}, // distance = sqrt(3) ~ 1.73 (closest)
{10.f, 10.f, 10.f},
{80.f, 0.f, 0.f},
};
const auto result = find_nearest(targets.cbegin(), targets.cend(), origin);
ASSERT_NE(result, targets.cend());
EXPECT_EQ(result, targets.cbegin() + 4);
}