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.
15 static char rcsid[] = "$Id: slew.c,v 1.1.1.1 2001-01-19 03:30:01 bradleyb Exp $";
33 //variables for slew system
35 object *slew_obj=NULL; //what object is slewing, or NULL if none
38 #define ROT_SPEED 8 //rate of rotation while key held down
39 #define VEL_SPEED (2*55) //rate of acceleration while key held down
41 short old_joy_x,old_joy_y; //position last time around
43 // Function Prototypes
47 // -------------------------------------------------------------------
48 //say start slewing with this object
49 void slew_init(object *obj)
53 slew_obj->control_type = CT_SLEW;
54 slew_obj->movement_type = MT_NONE;
56 slew_stop(); //make sure not moving
62 if (!slew_obj || slew_obj->control_type!=CT_SLEW) return 0;
64 vm_vec_zero(&slew_obj->mtype.phys_info.velocity);
68 void slew_reset_orient()
70 if (!slew_obj || slew_obj->control_type!=CT_SLEW) return;
72 slew_obj->orient.rvec.x = slew_obj->orient.uvec.y = slew_obj->orient.fvec.z = f1_0;
74 slew_obj->orient.rvec.y = slew_obj->orient.rvec.z = slew_obj->orient.uvec.x =
75 slew_obj->orient.uvec.z = slew_obj->orient.fvec.x = slew_obj->orient.fvec.y = 0;
79 int do_slew_movement(object *obj, int check_keys, int check_joy )
82 vms_vector svel, movement; //scaled velocity (per this frame)
83 vms_matrix rotmat,new_pm;
85 int joyx_moved,joyy_moved;
88 if (!slew_obj || slew_obj->control_type!=CT_SLEW) return 0;
91 if (Function_mode == FMODE_EDITOR) {
92 if (args_find("-jasen"))
93 obj->mtype.phys_info.velocity.x += VEL_SPEED * (key_down_time(KEY_PAD3) - key_down_time(KEY_PAD1));
95 obj->mtype.phys_info.velocity.x += VEL_SPEED * (key_down_time(KEY_PAD9) - key_down_time(KEY_PAD7));
96 obj->mtype.phys_info.velocity.y += VEL_SPEED * (key_down_time(KEY_PADMINUS) - key_down_time(KEY_PADPLUS));
97 obj->mtype.phys_info.velocity.z += VEL_SPEED * (key_down_time(KEY_PAD8) - key_down_time(KEY_PAD2));
99 rotang.p = (key_down_time(KEY_LBRACKET) - key_down_time(KEY_RBRACKET))/ROT_SPEED ;
100 if (args_find("-jasen"))
101 rotang.b = (key_down_time(KEY_PAD7) - key_down_time(KEY_PAD9))/ROT_SPEED;
103 rotang.b = (key_down_time(KEY_PAD1) - key_down_time(KEY_PAD3))/ROT_SPEED;
104 rotang.h = (key_down_time(KEY_PAD6) - key_down_time(KEY_PAD4))/ROT_SPEED;
107 obj->mtype.phys_info.velocity.x += VEL_SPEED * Controls.sideways_thrust_time;
108 obj->mtype.phys_info.velocity.y += VEL_SPEED * Controls.vertical_thrust_time;
109 obj->mtype.phys_info.velocity.z += VEL_SPEED * Controls.forward_thrust_time;
111 rotang.p = Controls.pitch_time/ROT_SPEED ;
112 rotang.b = Controls.bank_time/ROT_SPEED;
113 rotang.h = Controls.heading_time/ROT_SPEED;
117 rotang.p = rotang.b = rotang.h = 0;
119 //check for joystick movement
121 if (check_joy && joy_present && (Function_mode == FMODE_EDITOR) ) {
122 joy_get_pos(&joy_x,&joy_y);
125 joyx_moved = (abs(joy_x - old_joy_x)>JOY_NULL);
126 joyy_moved = (abs(joy_y - old_joy_y)>JOY_NULL);
128 if (abs(joy_x) < JOY_NULL) joy_x = 0;
129 if (abs(joy_y) < JOY_NULL) joy_y = 0;
132 if (!rotang.p) rotang.p = fixmul(-joy_y * 512,FrameTime); else;
134 if (joyy_moved) obj->mtype.phys_info.velocity.z = -joy_y * 8192;
136 if (!rotang.h) rotang.h = fixmul(joy_x * 512,FrameTime);
138 if (joyx_moved) old_joy_x = joy_x;
139 if (joyy_moved) old_joy_y = joy_y;
142 moved = rotang.p | rotang.b | rotang.h;
144 vm_angles_2_matrix(&rotmat,&rotang);
145 vm_matrix_x_matrix(&new_pm,&obj->orient,&rotmat);
146 obj->orient = new_pm;
147 vm_transpose_matrix(&new_pm); //make those columns rows
149 moved |= obj->mtype.phys_info.velocity.x | obj->mtype.phys_info.velocity.y | obj->mtype.phys_info.velocity.z;
151 svel = obj->mtype.phys_info.velocity;
152 vm_vec_scale(&svel,FrameTime); //movement in this frame
153 vm_vec_rotate(&movement,&svel,&new_pm);
155 // obj->last_pos = obj->pos;
156 vm_vec_add2(&obj->pos,&movement);
158 moved |= (movement.x || movement.y || movement.z);
161 update_object_seg(obj); //update segment id
166 //do slew for this frame
167 int slew_frame(int check_keys)
169 return do_slew_movement( slew_obj, !check_keys, 1 );