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/*
===========================================================================
Copyright (C) 2025 the OpenMoHAA team
This file is part of OpenMoHAA source code.
OpenMoHAA source code is free software; you can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
OpenMoHAA source code 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with OpenMoHAA source code; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
===========================================================================
*/
/**
* @brief Extension for recast-based navigation
*
*/
#pragma once
#include "../qcommon/class.h"
#include "../qcommon/vector.h"
#include "../qcommon/container.h"
struct rcPolyMesh;
/**
* @brief An offmesh point that the navigation system will use to find path.
*
*/
struct offMeshNavigationPoint {
Vector start;
Vector end;
float radius;
unsigned short flags;
unsigned char area;
bool bidirectional;
int id;
offMeshNavigationPoint()
: radius(0)
, flags(0)
, area(0)
, bidirectional(true)
, id(0)
{}
bool operator==(const offMeshNavigationPoint& other) const { return start == other.start && end == other.end; }
bool operator!=(const offMeshNavigationPoint& other) const { return !(*this == other); }
};
struct ExtensionArea {
float cost;
unsigned char number;
ExtensionArea(unsigned char number, float cost)
{
this->number = number;
this->cost = cost;
}
};
class INavigationMapExtension : public Class
{
private:
CLASS_PROTOTYPE(INavigationMapExtension);
public:
virtual void Handle(Container<offMeshNavigationPoint>& points, const rcPolyMesh *polyMesh) {}
virtual Container<ExtensionArea> GetSupportedAreas() const { return Container<ExtensionArea>(); }
};
class NavigationMapExtension_Ladders : public INavigationMapExtension
{
private:
CLASS_PROTOTYPE(NavigationMapExtension_Ladders);
public:
void Handle(Container<offMeshNavigationPoint>& points, const rcPolyMesh *polyMesh) override;
Container<ExtensionArea> GetSupportedAreas() const override;
};
class NavigationMapExtension_JumpFall : public INavigationMapExtension
{
private:
CLASS_PROTOTYPE(NavigationMapExtension_JumpFall);
public:
void Handle(Container<offMeshNavigationPoint>& points, const rcPolyMesh *polyMesh) override;
Container<ExtensionArea> GetSupportedAreas() const override;
private:
void FixupPoint(vec3_t pos);
bool AddPoint(Container<offMeshNavigationPoint>& points, const offMeshNavigationPoint& point);
bool AreVertsValid(const vec3_t pos1, const vec3_t pos2) const;
offMeshNavigationPoint CanConnectFallPoint(const rcPolyMesh *polyMesh, const Vector& pos1, const Vector& pos2);
offMeshNavigationPoint CanConnectJumpPoint(const rcPolyMesh *polyMesh, const Vector& pos1, const Vector& pos2);
offMeshNavigationPoint CanConnectJumpOverLedgePoint(const rcPolyMesh *polyMesh, const Vector& pos1, const Vector& pos2);
offMeshNavigationPoint CanConnectStraightPoint(const rcPolyMesh *polyMesh, const Vector& pos1, const Vector& pos2);
};
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