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Diffstat (limited to 'src/camera.h')
-rw-r--r-- | src/camera.h | 142 |
1 files changed, 142 insertions, 0 deletions
diff --git a/src/camera.h b/src/camera.h new file mode 100644 index 000000000..500168f3d --- /dev/null +++ b/src/camera.h @@ -0,0 +1,142 @@ +/* +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. Yaw is applied but not pitch. + // Things like wielded tools should be positioned relative to this node. + inline scene::ISceneNode* getPlayerNode() const + { + return m_playernode; + } + + // Get camera scene 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 < 0x1000000) + s32 m_view_bobbing_anim; + // If 0, view bobbing is off (e.g. player is standing). + // If 1, view bobbing is on (player is walking). + // If 2, view bobbing is getting switched off. + s32 m_view_bobbing_state; +}; + +#endif + |