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/*
Minetest-c55
Copyright (C) 2010-2011 celeron55, Perttu Ahola <celeron55@gmail.com>
This program 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.
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 General Public License for more details.
You should have received a copy of the GNU 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.
*/
#ifndef CAMERA_HEADER
#define CAMERA_HEADER
#include "common_irrlicht.h"
#include "utility.h"
class LocalPlayer;
class MapDrawControl;
/*
Client camera class, manages the player and camera scene nodes, the viewing distance
and performs view bobbing etc.
*/
class Camera
{
public:
Camera(scene::ISceneManager* smgr, MapDrawControl& draw_control);
~Camera();
// Get player scene node.
// This node is positioned at the player's torso (without any view bobbing),
// as given by Player::m_position, Player::m_pitch and Player::m_yaw.
// Things like wielded tools should be positioned relative to this node.
inline scene::ISceneNode* getPlayerNode() const
{
return m_playernode;
}
// Get camera scene node.
// The camera node is a child of the player node.
// It has the eye transformation and view bobbing applied.
inline scene::ICameraSceneNode* getCameraNode() const
{
return m_cameranode;
}
// Get the camera position (in absolute scene coordinates).
// This has view bobbing applied.
inline v3f getPosition() const
{
return m_camera_position;
}
// Get the camera direction (in absolute camera coordinates).
// This has view bobbing applied.
inline v3f getDirection() const
{
return m_camera_direction;
}
// Horizontal field of view
inline f32 getFovX() const
{
return m_fov_x;
}
// Vertical field of view
inline f32 getFovY() const
{
return m_fov_y;
}
// Get maximum of getFovX() and getFovY()
inline f32 getFovMax() const
{
return MYMAX(m_fov_x, m_fov_y);
}
// Step the camera: updates the viewing range and view bobbing.
void step(f32 dtime);
// Update the camera from the local player's position.
// frametime is used to adjust the viewing range.
void update(LocalPlayer* player, f32 frametime, v2u32 screensize);
// Render distance feedback loop
void updateViewingRange(f32 frametime_in);
// Update settings from g_settings
void updateSettings();
private:
// Scene manager and nodes
scene::ISceneManager* m_smgr;
scene::ISceneNode* m_playernode;
scene::ICameraSceneNode* m_cameranode;
// draw control
MapDrawControl& m_draw_control;
// viewing_range_min_nodes setting
f32 m_viewing_range_min;
// viewing_range_max_nodes setting
f32 m_viewing_range_max;
// Absolute camera position
v3f m_camera_position;
// Absolute camera direction
v3f m_camera_direction;
// Field of view and aspect ratio stuff
f32 m_aspect;
f32 m_fov_x;
f32 m_fov_y;
// Stuff for viewing range calculations
f32 m_wanted_frametime;
f32 m_added_frametime;
s16 m_added_frames;
f32 m_range_old;
f32 m_frametime_old;
f32 m_frametime_counter;
f32 m_time_per_range;
// View bobbing animation frame (0 <= m_view_bobbing < 0x10000)
u32 m_view_bobbing_anim;
// Number of frames to continue the view bobbing animation.
u32 m_view_bobbing_anim_left;
};
#endif
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