158 lines
3.7 KiB
C++
158 lines
3.7 KiB
C++
/* --------------------------------------------------------------------
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EXTREME TUXRACER
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Copyright (C) 1999-2001 Jasmin F. Patry (Tuxracer)
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Copyright (C) 2010 Extreme Tuxracer Team
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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---------------------------------------------------------------------*/
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#ifndef PHYSICS_H
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#define PHYSICS_H
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#include "bh.h"
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#include "mathlib.h"
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#define MAX_PADDLING_SPEED (60.0 / 3.6)
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#define PADDLE_FACT 1.0
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#define EARTH_GRAV 9.81
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#define JUMP_FORCE_DURATION 0.20
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#define TUX_MASS 20
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#define MIN_TUX_SPEED 1.4
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#define INIT_TUX_SPEED 3.0
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#define COLL_TOLERANCE 0.1
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#define MAX_SURF_PEN 0.2
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#define TUX_Y_CORR 0.36
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#define IDEAL_ROLL_SPEED 6.0
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#define IDEAL_ROLL_FRIC 0.35
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#define WIND_FACTOR 1.5
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#define MIN_FRICT_SPEED 2.8
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#define MAX_FRICT_FORCE 800.0
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#define MAX_TURN_ANGLE 45
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#define MAX_TURN_PERP 400
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#define MAX_TURN_PEN 0.15
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#define PADDLING_DURATION 0.40
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#define IDEAL_PADD_FRIC 0.35
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#define MAX_PADD_FORCE 122.5
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#define BRAKE_FORCE 200
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#define MIN_TIME_STEP 0.01
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#define MAX_TIME_STEP 0.10
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#define MAX_STEP_DIST 0.20
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#define MAX_POS_ERR 0.005
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#define MAX_VEL_ERR 0.05
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#define MAX_ROLL_ANGLE 30
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#define BRAKING_ROLL_ANGLE 55
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// constants for finish stage
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#define FIN_AIR_GRAV 500
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#define FIN_GRAV 500
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#define FIN_AIR_BRAKE 20
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#define FIN_BRAKE 12
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struct TForce {
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TVector3d surfnml;
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TVector3d rollnml;
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TVector3d pos;
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TVector3d vel;
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TVector3d frictdir;
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double frict_coeff;
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double comp_depth;
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double surfdistance;
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double compression;
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};
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class CControl {
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private:
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TForce ff;
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double ode_time_step;
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double finish_speed;
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bool CheckTreeCollisions(const TVector3d& pos, TVector3d *tree_loc) const;
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void AdjustTreeCollision(const TVector3d& pos, TVector3d *vel) const;
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static void CheckItemCollection(const TVector3d& pos);
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TVector3d CalcRollNormal(double speed);
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TVector3d CalcAirForce();
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TVector3d CalcSpringForce();
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TVector3d CalcNormalForce();
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TVector3d CalcJumpForce();
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TVector3d CalcFrictionForce(double speed, const TVector3d& nmlforce);
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TVector3d CalcPaddleForce(double speed);
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TVector3d CalcBrakeForce(double speed);
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TVector3d CalcGravitationForce();
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TVector3d CalcNetForce(const TVector3d& pos, const TVector3d& vel);
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void AdjustVelocity();
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void AdjustPosition(const TPlane& surf_plane, double dist_from_surface);
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void SetTuxPosition(double speed);
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double AdjustTimeStep(double h, const TVector3d& vel);
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void SolveOdeSystem(double timestep);
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public:
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CControl();
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// view:
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TVector3d viewpos;
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TVector3d plyr_pos;
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TVector3d viewdir;
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TVector3d viewup;
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TMatrix<4, 4> view_mat;
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TViewMode viewmode;
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bool view_init;
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// main:
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TVector3d cpos;
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TVector3d cvel;
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TVector3d last_pos;
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TVector3d cnet_force;
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TVector3d cdirection;
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TQuaternion corientation;
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double way;
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TVector3d plane_nml;
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// steering:
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double turn_fact;
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double turn_animation;
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double paddle_time;
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double jump_amt;
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double jump_start_time;
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bool is_paddling;
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bool is_braking;
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bool begin_jump;
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bool jumping;
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bool jump_charging;
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bool orientation_initialized;
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// trick:
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bool front_flip;
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bool back_flip;
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bool cairborne;
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bool roll_left;
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bool roll_right;
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double roll_factor;
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double flip_factor;
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// pseudo constants:
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double minSpeed;
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double minFrictspeed;
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void Init();
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void UpdatePlayerPos(float timestep);
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};
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#endif
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