2 THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
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5 ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
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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.
19 static char rcsid[] = "$Id: slew.c,v 1.3 2001-01-31 15:17:57 bradleyb Exp $";
36 //variables for slew system
38 object *slew_obj=NULL; //what object is slewing, or NULL if none
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
44 short old_joy_x,old_joy_y; //position last time around
46 // Function Prototypes
50 // -------------------------------------------------------------------
51 //say start slewing with this object
52 void slew_init(object *obj)
56 slew_obj->control_type = CT_SLEW;
57 slew_obj->movement_type = MT_NONE;
59 slew_stop(); //make sure not moving
65 if (!slew_obj || slew_obj->control_type!=CT_SLEW) return 0;
67 vm_vec_zero(&slew_obj->mtype.phys_info.velocity);
71 void slew_reset_orient()
73 if (!slew_obj || slew_obj->control_type!=CT_SLEW) return;
75 slew_obj->orient.rvec.x = slew_obj->orient.uvec.y = slew_obj->orient.fvec.z = f1_0;
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;
82 int do_slew_movement(object *obj, int check_keys, int check_joy )
85 vms_vector svel, movement; //scaled velocity (per this frame)
86 vms_matrix rotmat,new_pm;
88 int joyx_moved,joyy_moved;
91 if (!slew_obj || slew_obj->control_type!=CT_SLEW) return 0;
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));
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));
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;
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;
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;
114 rotang.p = Controls.pitch_time/ROT_SPEED ;
115 rotang.b = Controls.bank_time/ROT_SPEED;
116 rotang.h = Controls.heading_time/ROT_SPEED;
120 rotang.p = rotang.b = rotang.h = 0;
122 //check for joystick movement
124 if (check_joy && joy_present && (Function_mode == FMODE_EDITOR) ) {
125 joy_get_pos(&joy_x,&joy_y);
128 joyx_moved = (abs(joy_x - old_joy_x)>JOY_NULL);
129 joyy_moved = (abs(joy_y - old_joy_y)>JOY_NULL);
131 if (abs(joy_x) < JOY_NULL) joy_x = 0;
132 if (abs(joy_y) < JOY_NULL) joy_y = 0;
135 if (!rotang.p) rotang.p = fixmul(-joy_y * 512,FrameTime); else;
137 if (joyy_moved) obj->mtype.phys_info.velocity.z = -joy_y * 8192;
139 if (!rotang.h) rotang.h = fixmul(joy_x * 512,FrameTime);
141 if (joyx_moved) old_joy_x = joy_x;
142 if (joyy_moved) old_joy_y = joy_y;
145 moved = rotang.p | rotang.b | rotang.h;
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
152 moved |= obj->mtype.phys_info.velocity.x | obj->mtype.phys_info.velocity.y | obj->mtype.phys_info.velocity.z;
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);
158 // obj->last_pos = obj->pos;
159 vm_vec_add2(&obj->pos,&movement);
161 moved |= (movement.x || movement.y || movement.z);
164 update_object_seg(obj); //update segment id
169 //do slew for this frame
170 int slew_frame(int check_keys)
172 return do_slew_movement( slew_obj, !check_keys, 1 );