main/controls.c

   1 /*
   2 THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
   3 SOFTWARE CORPORATION ("PARALLAX").  PARALLAX, IN DISTRIBUTING THE CODE TO
   4 END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
   5 ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
   6 IN USING, DISPLAYING,  AND CREATING DERIVATIVE WORKS THEREOF, SO LONG AS
   7 SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
   8 FREE PURPOSES.  IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
   9 CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES.  THE END-USER UNDERSTANDS
  10 AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
  11 COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION.  ALL RIGHTS RESERVED.
  12 */
  13
  14
  15 #ifdef RCS
  16 static char rcsid[] = "$Id: controls.c,v 1.1.1.1 2001-01-19 03:30:01 bradleyb Exp $";
  17 #endif
  18
  19 #include <conf.h>
  20 #include <stdio.h>
  21 #include <stdlib.h>
  22
  23 #include "pstypes.h"
  24 #include "mono.h"
  25 #include "key.h"
  26 #include "joy.h"
  27 #include "timer.h"
  28 #include "error.h"
  29
  30 #include "inferno.h"
  31 #include "game.h"
  32 #include "object.h"
  33 #include "player.h"
  34
  35 #include "controls.h"
  36 #include "joydefs.h"
  37 #include "render.h"
  38 #include "args.h"
  39 #include "palette.h"
  40 #include "mouse.h"
  41 #include "kconfig.h"
  42 #include "laser.h"
  43 #include "multi.h"
  44 #include "vclip.h"
  45 #include "fireball.h"
  46
  47 //look at keyboard, mouse, joystick, CyberMan, whatever, and set
  48 //physics vars rotvel, velocity
  49
  50 fix Afterburner_charge=f1_0;
  51
  52 #define AFTERBURNER_USE_SECS    3                               //use up in 3 seconds
  53 #define DROP_DELTA_TIME                 (f1_0/15)       //drop 3 per second
  54
  55 extern int Drop_afterburner_blob_flag;          //ugly hack
  56
  57 extern fix      Seismic_tremor_magnitude;
  58
  59 void read_flying_controls( object * obj )
  60 {
  61         fix     forward_thrust_time;
  62
  63         Assert(FrameTime > 0);          //Get MATT if hit this!
  64
  65         if (Player_is_dead) {
  66                 vm_vec_zero(&obj->mtype.phys_info.rotthrust);
  67                 vm_vec_zero(&obj->mtype.phys_info.thrust);
  68                 return;
  69         }
  70
  71         if ((obj->type!=OBJ_PLAYER) || (obj->id!=Player_num)) return;   //references to player_ship require that this obj be the player
  72
  73         if (Guided_missile[Player_num] && Guided_missile[Player_num]->signature==Guided_missile_sig[Player_num]) {
  74                 vms_angvec rotangs;
  75                 vms_matrix rotmat,tempm;
  76                 fix speed;
  77
  78                 //this is a horrible hack.  guided missile stuff should not be
  79                 //handled in the middle of a routine that is dealing with the player
  80
  81                 vm_vec_zero(&obj->mtype.phys_info.rotthrust);
  82
  83                 rotangs.p = Controls.pitch_time / 2 + Seismic_tremor_magnitude/64;
  84                 rotangs.b = Controls.bank_time / 2 + Seismic_tremor_magnitude/16;
  85                 rotangs.h = Controls.heading_time / 2 + Seismic_tremor_magnitude/64;
  86
  87                 vm_angles_2_matrix(&rotmat,&rotangs);
  88
  89                 vm_matrix_x_matrix(&tempm,&Guided_missile[Player_num]->orient,&rotmat);
  90
  91                 Guided_missile[Player_num]->orient = tempm;
  92
  93                 speed = Weapon_info[Guided_missile[Player_num]->id].speed[Difficulty_level];
  94
  95                 vm_vec_copy_scale(&Guided_missile[Player_num]->mtype.phys_info.velocity,&Guided_missile[Player_num]->orient.fvec,speed);
  96 #ifdef NETWORK
  97                 if (Game_mode & GM_MULTI)
  98                         multi_send_guided_info (Guided_missile[Player_num],0);
  99 #endif
 100
 101         }
 102         else {
 103                 obj->mtype.phys_info.rotthrust.x = Controls.pitch_time;
 104                 obj->mtype.phys_info.rotthrust.y = Controls.heading_time;
 105                 obj->mtype.phys_info.rotthrust.z = Controls.bank_time;
 106         }
 107
 108 //      mprintf( (0, "Rot thrust = %.3f,%.3f,%.3f\n", f2fl(obj->mtype.phys_info.rotthrust.x),f2fl(obj->mtype.phys_info.rotthrust.y), f2fl(obj->mtype.phys_info.rotthrust.z) ));
 109
 110         forward_thrust_time = Controls.forward_thrust_time;
 111
 112         if (Players[Player_num].flags & PLAYER_FLAGS_AFTERBURNER)
 113         {
 114                 if (Controls.afterburner_state) {                       //player has key down
 115                         //if (forward_thrust_time >= 0) {               //..and isn't moving backward
 116                         {
 117                                 fix afterburner_scale;
 118                                 int old_count,new_count;
 119
 120                                 //add in value from 0..1
 121                                 afterburner_scale = f1_0 + min(f1_0/2,Afterburner_charge) * 2;
 122
 123                                 forward_thrust_time = fixmul(FrameTime,afterburner_scale);      //based on full thrust
 124
 125                                 old_count = (Afterburner_charge / (DROP_DELTA_TIME/AFTERBURNER_USE_SECS));
 126
 127                                 Afterburner_charge -= FrameTime/AFTERBURNER_USE_SECS;
 128
 129                                 if (Afterburner_charge < 0)
 130                                         Afterburner_charge = 0;
 131
 132                                 new_count = (Afterburner_charge / (DROP_DELTA_TIME/AFTERBURNER_USE_SECS));
 133
 134                                 if (old_count != new_count)
 135                                         Drop_afterburner_blob_flag = 1; //drop blob (after physics called)
 136                         }
 137                 }
 138                 else {
 139                         fix cur_energy,charge_up;
 140
 141                         //charge up to full
 142                         charge_up = min(FrameTime/8,f1_0 - Afterburner_charge); //recharge over 8 seconds
 143
 144                         cur_energy = max(Players[Player_num].energy-i2f(10),0); //don't drop below 10
 145
 146                         //maybe limit charge up by energy
 147                         charge_up = min(charge_up,cur_energy/10);
 148
 149                         Afterburner_charge += charge_up;
 150
 151                         Players[Player_num].energy -= charge_up * 100 / 10;     //full charge uses 10% of energy
 152                 }
 153         }
 154
 155         // Set object's thrust vector for forward/backward
 156         vm_vec_copy_scale(&obj->mtype.phys_info.thrust,&obj->orient.fvec, forward_thrust_time );
 157
 158         // slide left/right
 159         vm_vec_scale_add2(&obj->mtype.phys_info.thrust,&obj->orient.rvec, Controls.sideways_thrust_time );
 160
 161         // slide up/down
 162         vm_vec_scale_add2(&obj->mtype.phys_info.thrust,&obj->orient.uvec, Controls.vertical_thrust_time );
 163
 164         if (obj->mtype.phys_info.flags & PF_WIGGLE) {
 165                 fix swiggle;
 166                 fix_fastsincos(GameTime, &swiggle, NULL);
 167                 vm_vec_scale_add2(&obj->mtype.phys_info.velocity,&obj->orient.uvec,fixmul(swiggle,Player_ship->wiggle));
 168         }
 169
 170         // As of now, obj->mtype.phys_info.thrust & obj->mtype.phys_info.rotthrust are
 171         // in units of time... In other words, if thrust==FrameTime, that
 172         // means that the user was holding down the Max_thrust key for the
 173         // whole frame.  So we just scale them up by the max, and divide by
 174         // FrameTime to make them independant of framerate
 175
 176         //      Prevent divide overflows on high frame rates.
 177         //      In a signed divide, you get an overflow if num >= div<<15
 178         {
 179                 fix     ft = FrameTime;
 180
 181                 //      Note, you must check for ft < F1_0/2, else you can get an overflow  on the << 15.
 182                 if ((ft < F1_0/2) && (ft << 15 <= Player_ship->max_thrust)) {
 183                         mprintf((0, "Preventing divide overflow in controls.c for Max_thrust!\n"));
 184                         ft = (Player_ship->max_thrust >> 15) + 1;
 185                 }
 186
 187                 vm_vec_scale( &obj->mtype.phys_info.thrust, fixdiv(Player_ship->max_thrust,ft) );
 188
 189                 if ((ft < F1_0/2) && (ft << 15 <= Player_ship->max_rotthrust)) {
 190                         mprintf((0, "Preventing divide overflow in controls.c for max_rotthrust!\n"));
 191                         ft = (Player_ship->max_thrust >> 15) + 1;
 192                 }
 193
 194                 vm_vec_scale( &obj->mtype.phys_info.rotthrust, fixdiv(Player_ship->max_rotthrust,ft) );
 195         }
 196
 197 }