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  *
  16  * Code for controlling player movement
  17  *
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #include <conf.h>
  22 #endif
  23
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26
  27 #include "pstypes.h"
  28 #include "mono.h"
  29 #include "key.h"
  30 #include "joy.h"
  31 #include "timer.h"
  32 #include "error.h"
  33
  34 #include "inferno.h"
  35 #include "game.h"
  36 #include "object.h"
  37 #include "player.h"
  38
  39 #include "controls.h"
  40 #include "joydefs.h"
  41 #include "render.h"
  42 #include "args.h"
  43 #include "palette.h"
  44 #include "mouse.h"
  45 #include "kconfig.h"
  46 #include "laser.h"
  47 #ifdef NETWORK
  48 #include "multi.h"
  49 #endif
  50 #include "vclip.h"
  51 #include "fireball.h"
  52
  53 //look at keyboard, mouse, joystick, CyberMan, whatever, and set
  54 //physics vars rotvel, velocity
  55
  56 fix Afterburner_charge=f1_0;
  57
  58 #define AFTERBURNER_USE_SECS    3                               //use up in 3 seconds
  59 #define DROP_DELTA_TIME                 (f1_0/15)       //drop 3 per second
  60
  61 extern int Drop_afterburner_blob_flag;          //ugly hack
  62
  63 extern fix      Seismic_tremor_magnitude;
  64
  65 void read_flying_controls( object * obj )
  66 {
  67         fix     forward_thrust_time;
  68
  69         Assert(FrameTime > 0);          //Get MATT if hit this!
  70
  71 // this section commented and moved to the bottom by WraithX
  72 //      if (Player_is_dead) {
  73 //              vm_vec_zero(&obj->mtype.phys_info.rotthrust);
  74 //              vm_vec_zero(&obj->mtype.phys_info.thrust);
  75 //              return;
  76 //      }
  77 // end of section to be moved.
  78
  79         if ((obj->type!=OBJ_PLAYER) || (obj->id!=Player_num)) return;   //references to player_ship require that this obj be the player
  80
  81         if (Guided_missile[Player_num] && Guided_missile[Player_num]->signature==Guided_missile_sig[Player_num]) {
  82                 vms_angvec rotangs;
  83                 vms_matrix rotmat,tempm;
  84                 fix speed;
  85
  86                 //this is a horrible hack.  guided missile stuff should not be
  87                 //handled in the middle of a routine that is dealing with the player
  88
  89                 vm_vec_zero(&obj->mtype.phys_info.rotthrust);
  90
  91                 rotangs.p = Controls.pitch_time / 2 + Seismic_tremor_magnitude/64;
  92                 rotangs.b = Controls.bank_time / 2 + Seismic_tremor_magnitude/16;
  93                 rotangs.h = Controls.heading_time / 2 + Seismic_tremor_magnitude/64;
  94
  95                 vm_angles_2_matrix(&rotmat,&rotangs);
  96
  97                 vm_matrix_x_matrix(&tempm,&Guided_missile[Player_num]->orient,&rotmat);
  98
  99                 Guided_missile[Player_num]->orient = tempm;
 100
 101                 speed = Weapon_info[Guided_missile[Player_num]->id].speed[Difficulty_level];
 102
 103                 vm_vec_copy_scale(&Guided_missile[Player_num]->mtype.phys_info.velocity,&Guided_missile[Player_num]->orient.fvec,speed);
 104 #ifdef NETWORK
 105                 if (Game_mode & GM_MULTI)
 106                         multi_send_guided_info (Guided_missile[Player_num],0);
 107 #endif
 108
 109         }
 110         else {
 111                 obj->mtype.phys_info.rotthrust.x = Controls.pitch_time;
 112                 obj->mtype.phys_info.rotthrust.y = Controls.heading_time;
 113                 obj->mtype.phys_info.rotthrust.z = Controls.bank_time;
 114         }
 115
 116 //      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) ));
 117
 118         forward_thrust_time = Controls.forward_thrust_time;
 119
 120         if (Players[Player_num].flags & PLAYER_FLAGS_AFTERBURNER)
 121         {
 122                 if (Controls.afterburner_state) {                       //player has key down
 123                         //if (forward_thrust_time >= 0) {               //..and isn't moving backward
 124                         {
 125                                 fix afterburner_scale;
 126                                 int old_count,new_count;
 127
 128                                 //add in value from 0..1
 129                                 afterburner_scale = f1_0 + min(f1_0/2,Afterburner_charge) * 2;
 130
 131                                 forward_thrust_time = fixmul(FrameTime,afterburner_scale);      //based on full thrust
 132
 133                                 old_count = (Afterburner_charge / (DROP_DELTA_TIME/AFTERBURNER_USE_SECS));
 134
 135                                 Afterburner_charge -= FrameTime/AFTERBURNER_USE_SECS;
 136
 137                                 if (Afterburner_charge < 0)
 138                                         Afterburner_charge = 0;
 139
 140                                 new_count = (Afterburner_charge / (DROP_DELTA_TIME/AFTERBURNER_USE_SECS));
 141
 142                                 if (old_count != new_count)
 143                                         Drop_afterburner_blob_flag = 1; //drop blob (after physics called)
 144                         }
 145                 }
 146                 else {
 147                         fix cur_energy,charge_up;
 148
 149                         //charge up to full
 150                         charge_up = min(FrameTime/8,f1_0 - Afterburner_charge); //recharge over 8 seconds
 151
 152                         cur_energy = max(Players[Player_num].energy-i2f(10),0); //don't drop below 10
 153
 154                         //maybe limit charge up by energy
 155                         charge_up = min(charge_up,cur_energy/10);
 156
 157                         Afterburner_charge += charge_up;
 158
 159                         Players[Player_num].energy -= charge_up * 100 / 10;     //full charge uses 10% of energy
 160                 }
 161         }
 162
 163         // Set object's thrust vector for forward/backward
 164         vm_vec_copy_scale(&obj->mtype.phys_info.thrust,&obj->orient.fvec, forward_thrust_time );
 165
 166         // slide left/right
 167         vm_vec_scale_add2(&obj->mtype.phys_info.thrust,&obj->orient.rvec, Controls.sideways_thrust_time );
 168
 169         // slide up/down
 170         vm_vec_scale_add2(&obj->mtype.phys_info.thrust,&obj->orient.uvec, Controls.vertical_thrust_time );
 171
 172         if (obj->mtype.phys_info.flags & PF_WIGGLE)
 173         {
 174                 fix swiggle;
 175                 fix_fastsincos(GameTime, &swiggle, NULL);
 176                 if (FrameTime < F1_0) // Only scale wiggle if getting at least 1 FPS, to avoid causing the opposite problem.
 177                         swiggle = fixmul(swiggle*20, FrameTime); //make wiggle fps-independent (based on pre-scaled amount of wiggle at 20 FPS)
 178                 vm_vec_scale_add2(&obj->mtype.phys_info.velocity,&obj->orient.uvec,fixmul(swiggle,Player_ship->wiggle));
 179         }
 180
 181         // As of now, obj->mtype.phys_info.thrust & obj->mtype.phys_info.rotthrust are
 182         // in units of time... In other words, if thrust==FrameTime, that
 183         // means that the user was holding down the Max_thrust key for the
 184         // whole frame.  So we just scale them up by the max, and divide by
 185         // FrameTime to make them independant of framerate
 186
 187         //      Prevent divide overflows on high frame rates.
 188         //      In a signed divide, you get an overflow if num >= div<<15
 189         {
 190                 fix     ft = FrameTime;
 191
 192                 //      Note, you must check for ft < F1_0/2, else you can get an overflow  on the << 15.
 193                 if ((ft < F1_0/2) && (ft << 15 <= Player_ship->max_thrust)) {
 194                         mprintf((0, "Preventing divide overflow in controls.c for Max_thrust!\n"));
 195                         ft = (Player_ship->max_thrust >> 15) + 1;
 196                 }
 197
 198                 vm_vec_scale( &obj->mtype.phys_info.thrust, fixdiv(Player_ship->max_thrust,ft) );
 199
 200                 if ((ft < F1_0/2) && (ft << 15 <= Player_ship->max_rotthrust)) {
 201                         mprintf((0, "Preventing divide overflow in controls.c for max_rotthrust!\n"));
 202                         ft = (Player_ship->max_thrust >> 15) + 1;
 203                 }
 204
 205                 vm_vec_scale( &obj->mtype.phys_info.rotthrust, fixdiv(Player_ship->max_rotthrust,ft) );
 206         }
 207
 208         // moved here by WraithX
 209         if (Player_is_dead)
 210         {
 211                 //vm_vec_zero(&obj->mtype.phys_info.rotthrust); // let dead players rotate, changed by WraithX
 212                 vm_vec_zero(&obj->mtype.phys_info.thrust);  // don't let dead players move, changed by WraithX
 213                 return;
 214         }// end if
 215
 216 }