65 lines
1.7 KiB
C++
65 lines
1.7 KiB
C++
//
|
|
// YaPB, based on PODBot by Markus Klinge ("CountFloyd").
|
|
// Copyright © YaPB Project Developers <yapb@jeefo.net>.
|
|
//
|
|
// SPDX-License-Identifier: MIT
|
|
//
|
|
|
|
#pragma once
|
|
|
|
// view frustum for bots
|
|
class Frustum : public Singleton <Frustum> {
|
|
public:
|
|
struct Plane {
|
|
Vector normal {};
|
|
Vector point {};
|
|
float result {};
|
|
};
|
|
|
|
enum class PlaneSide : int {
|
|
Top = 0,
|
|
Bottom,
|
|
Left,
|
|
Right,
|
|
Near,
|
|
Far,
|
|
Num
|
|
};
|
|
|
|
public:
|
|
using Planes = Plane[static_cast <int> (PlaneSide::Num)];
|
|
|
|
public:
|
|
static constexpr float kFov = 75.0f;
|
|
static constexpr float kAspectRatio = 16.0f / 9.0f;
|
|
static constexpr float kMaxViewDistance = 4096.0f;
|
|
static constexpr float kMinViewDistance = 2.0f;
|
|
|
|
private:
|
|
float m_farHeight {}; // height of the far frustum
|
|
float m_farWidth {}; // width of the far frustum
|
|
float m_nearHeight {}; // height of the near frustum
|
|
float m_nearWidth {}; // width of the near frustum
|
|
|
|
public:
|
|
explicit Frustum () {
|
|
m_nearHeight = 2.0f * cr::tanf (kFov * deg2rad (1.0f) * 0.5f) * kMinViewDistance;
|
|
m_nearWidth = m_nearHeight * kAspectRatio;
|
|
|
|
m_farHeight = 2.0f * cr::tanf (kFov * deg2rad (1.0f) * 0.5f) * kMaxViewDistance;
|
|
m_farWidth = m_farHeight * kAspectRatio;
|
|
}
|
|
|
|
public:
|
|
// updates bot view frustum
|
|
void calculate (Planes &planes, const Vector &viewAngle, const Vector &viewOffset);
|
|
|
|
// check if object inside frustum plane
|
|
bool isObjectInsidePlane (const Plane &plane, const Vector ¢er, float height, float radius) const;
|
|
|
|
// check if entity origin inside view plane
|
|
bool check (const Planes &planes, edict_t *ent) const;
|
|
};
|
|
|
|
// declare global frustum data
|
|
CR_EXPOSE_GLOBAL_SINGLETON (Frustum, frustum);
|