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 #ifdef HAVE_CONFIG_H
15 #include <conf.h>
16 #endif
17
18 #ifdef RCS
19 static char rcsid[] = "$Id: slew.c,v 1.3 2001/01/31 15:17:57 bradleyb Exp $";
20 #endif
21
22 #include <stdlib.h>
23
24 #include "inferno.h"
25 #include "game.h"
26 #include "vecmat.h"
27 #include "key.h"
28 #include "joy.h"
29 #include "object.h"
30 #include "error.h"
31 #include "physics.h"
32 #include "joydefs.h"
33 #include "kconfig.h"
34 #include "args.h"
35
36 //variables for slew system
37
38 object *slew_obj=NULL; //what object is slewing, or NULL if none
39
40 #define JOY_NULL 15
41 #define ROT_SPEED 8 //rate of rotation while key held down
42 #define VEL_SPEED (2*55) //rate of acceleration while key held down
43
44 short old_joy_x,old_joy_y; //position last time around
45
46 // Function Prototypes
47 int slew_stop(void);
48
49
50 // -------------------------------------------------------------------
51 //say start slewing with this object
slew_init(object * obj)52 void slew_init(object *obj)
53 {
54 slew_obj = obj;
55
56 slew_obj->control_type = CT_SLEW;
57 slew_obj->movement_type = MT_NONE;
58
59 slew_stop(); //make sure not moving
60 }
61
62
slew_stop()63 int slew_stop()
64 {
65 if (!slew_obj || slew_obj->control_type!=CT_SLEW) return 0;
66
67 vm_vec_zero(&slew_obj->mtype.phys_info.velocity);
68 return 1;
69 }
70
slew_reset_orient()71 void slew_reset_orient()
72 {
73 if (!slew_obj || slew_obj->control_type!=CT_SLEW) return;
74
75 slew_obj->orient.rvec.x = slew_obj->orient.uvec.y = slew_obj->orient.fvec.z = f1_0;
76
77 slew_obj->orient.rvec.y = slew_obj->orient.rvec.z = slew_obj->orient.uvec.x =
78 slew_obj->orient.uvec.z = slew_obj->orient.fvec.x = slew_obj->orient.fvec.y = 0;
79
80 }
81
do_slew_movement(object * obj,int check_keys,int check_joy)82 int do_slew_movement(object *obj, int check_keys, int check_joy )
83 {
84 int moved = 0;
85 vms_vector svel, movement; //scaled velocity (per this frame)
86 vms_matrix rotmat,new_pm;
87 int joy_x,joy_y,btns;
88 int joyx_moved,joyy_moved;
89 vms_angvec rotang;
90
91 if (!slew_obj || slew_obj->control_type!=CT_SLEW) return 0;
92
93 if (check_keys) {
94 if (Function_mode == FMODE_EDITOR) {
95 if (FindArg("-jasen"))
96 obj->mtype.phys_info.velocity.x += VEL_SPEED * (key_down_time(KEY_PAD3) - key_down_time(KEY_PAD1));
97 else
98 obj->mtype.phys_info.velocity.x += VEL_SPEED * (key_down_time(KEY_PAD9) - key_down_time(KEY_PAD7));
99 obj->mtype.phys_info.velocity.y += VEL_SPEED * (key_down_time(KEY_PADMINUS) - key_down_time(KEY_PADPLUS));
100 obj->mtype.phys_info.velocity.z += VEL_SPEED * (key_down_time(KEY_PAD8) - key_down_time(KEY_PAD2));
101
102 rotang.p = (key_down_time(KEY_LBRACKET) - key_down_time(KEY_RBRACKET))/ROT_SPEED ;
103 if (FindArg("-jasen"))
104 rotang.b = (key_down_time(KEY_PAD7) - key_down_time(KEY_PAD9))/ROT_SPEED;
105 else
106 rotang.b = (key_down_time(KEY_PAD1) - key_down_time(KEY_PAD3))/ROT_SPEED;
107 rotang.h = (key_down_time(KEY_PAD6) - key_down_time(KEY_PAD4))/ROT_SPEED;
108 }
109 else {
110 obj->mtype.phys_info.velocity.x += VEL_SPEED * Controls.sideways_thrust_time;
111 obj->mtype.phys_info.velocity.y += VEL_SPEED * Controls.vertical_thrust_time;
112 obj->mtype.phys_info.velocity.z += VEL_SPEED * Controls.forward_thrust_time;
113
114 rotang.p = Controls.pitch_time/ROT_SPEED ;
115 rotang.b = Controls.bank_time/ROT_SPEED;
116 rotang.h = Controls.heading_time/ROT_SPEED;
117 }
118 }
119 else
120 rotang.p = rotang.b = rotang.h = 0;
121
122 //check for joystick movement
123
124 if (check_joy && joy_present && (Function_mode == FMODE_EDITOR) ) {
125 joy_get_pos(&joy_x,&joy_y);
126 btns=joy_get_btns();
127
128 joyx_moved = (abs(joy_x - old_joy_x)>JOY_NULL);
129 joyy_moved = (abs(joy_y - old_joy_y)>JOY_NULL);
130
131 if (abs(joy_x) < JOY_NULL) joy_x = 0;
132 if (abs(joy_y) < JOY_NULL) joy_y = 0;
133
134 if (btns)
135 if (!rotang.p) rotang.p = fixmul(-joy_y * 512,FrameTime); else;
136 else
137 if (joyy_moved) obj->mtype.phys_info.velocity.z = -joy_y * 8192;
138
139 if (!rotang.h) rotang.h = fixmul(joy_x * 512,FrameTime);
140
141 if (joyx_moved) old_joy_x = joy_x;
142 if (joyy_moved) old_joy_y = joy_y;
143 }
144
145 moved = rotang.p | rotang.b | rotang.h;
146
147 vm_angles_2_matrix(&rotmat,&rotang);
148 vm_matrix_x_matrix(&new_pm,&obj->orient,&rotmat);
149 obj->orient = new_pm;
150 vm_transpose_matrix(&new_pm); //make those columns rows
151
152 moved |= obj->mtype.phys_info.velocity.x | obj->mtype.phys_info.velocity.y | obj->mtype.phys_info.velocity.z;
153
154 svel = obj->mtype.phys_info.velocity;
155 vm_vec_scale(&svel,FrameTime); //movement in this frame
156 vm_vec_rotate(&movement,&svel,&new_pm);
157
158 // obj->last_pos = obj->pos;
159 vm_vec_add2(&obj->pos,&movement);
160
161 moved |= (movement.x || movement.y || movement.z);
162
163 if (moved)
164 update_object_seg(obj); //update segment id
165
166 return moved;
167 }
168
169 //do slew for this frame
slew_frame(int check_keys)170 int slew_frame(int check_keys)
171 {
172 return do_slew_movement( slew_obj, !check_keys, 1 );
173
174 }
175
176