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11 COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
15 * $Source: /cvs/cvsroot/d2x/main/editor/editor.h,v $
18 * $Date: 2001-10-25 02:19:32 $
20 * FIXME: put description here
22 * $Log: not supported by cvs2svn $
40 #define ORTHO_VIEWS 0 // set to 1 to enable 3 orthogonal views
41 #define ED_SCREEN_W 800 //width of editor screen
42 #define ED_SCREEN_H 600 //height of editor screen
46 #define GAMEVIEW_X 1 //where the 320x200 game window goes
47 #define GAMEVIEW_Y 1+MENUBAR_H
48 #define GAMEVIEW_W 320
49 #define GAMEVIEW_H 200
53 #define STATUS_Y (ED_SCREEN_H-STATUS_H)
54 #define STATUS_W ED_SCREEN_W
56 #define LVIEW_X 1 //large view
57 #define LVIEW_Y (GAMEVIEW_Y+GAMEVIEW_H+2)
59 #define LVIEW_H (STATUS_Y-LVIEW_Y-2)
61 #define TMAPBOX_X (LVIEW_X+LVIEW_W+4) //location of first one
62 #define TMAPBOX_Y (LVIEW_Y+2)
66 #define TMAPCURBOX_X (TMAPBOX_X + 4*(TMAPBOX_W + 3))
67 #define TMAPCURBOX_Y (TMAPBOX_Y + TMAPBOX_H)
69 #define OBJCURBOX_X (TMAPCURBOX_X)
70 #define OBJCURBOX_Y (TMAPCURBOX_Y + 3*(TMAPBOX_H + 2) -40)
72 #define PAD_X (GAMEVIEW_X + GAMEVIEW_W + 16)
73 #define PAD_Y (GAMEVIEW_Y + 4)
75 #define SMALLVIEW_W 173 //width of small view windows
76 #define SMALLVIEW_H 148 //height of small view windows
78 #define TVIEW_X (LVIEW_X+LVIEW_W+2) //top view
79 #define TVIEW_Y LVIEW_Y
80 #define TVIEW_W SMALLVIEW_W
81 #define TVIEW_H SMALLVIEW_H
83 #define FVIEW_X TVIEW_X //front view
84 #define FVIEW_Y (TVIEW_Y+SMALLVIEW_H+2)
85 #define FVIEW_W SMALLVIEW_W
86 #define FVIEW_H SMALLVIEW_H
88 #define RVIEW_X (TVIEW_X+SMALLVIEW_W+2) //right view
89 #define RVIEW_Y FVIEW_Y
90 #define RVIEW_W SMALLVIEW_W
91 #define RVIEW_H SMALLVIEW_H
93 #define GVIEW_X RVIEW_X //group view
94 #define GVIEW_Y TVIEW_Y
95 #define GVIEW_W SMALLVIEW_W
96 #define GVIEW_H SMALLVIEW_H
98 //there were color constants here, but I moved them to meddraw.c - Matt
100 #define SEGMOVE_PAD_ID 0
101 #define SEGSIZE_PAD_ID 1
102 #define CURVE_PAD_ID 2
103 #define TEXTURE_PAD_ID 3
104 #define OBJECT_PAD_ID 4
105 #define OBJMOV_PAD_ID 5
106 #define GROUP_PAD_ID 6
107 #define LIGHTING_PAD_ID 7
108 #define TEST_PAD_ID 8
119 // Default size of a segment
120 #define DEFAULT_X_SIZE F1_0*20
121 #define DEFAULT_Y_SIZE F1_0*20
122 #define DEFAULT_Z_SIZE F1_0*20
124 // Scale factor from 3d units (integer portion) to uv coordinates (integer portion)
125 #define VMAG (F1_0 / (DEFAULT_X_SIZE/F1_0))
126 #define UMAG VMAG // unused
128 // Number of segments which can be found (size of Found_segs[])
129 #define MAX_FOUND_SEGS 200
130 #define MAX_SELECTED_SEGS (MAX_SEGMENTS)
131 #define MAX_WARNING_SEGS (MAX_SEGMENTS)
133 #define MAX_GROUPS 10
134 #define ROT_GROUP MAX_GROUPS
136 // Modes for segment sizing
137 #define SEGSIZEMODE_FREE 1
138 #define SEGSIZEMODE_ALL 2
139 #define SEGSIZEMODE_CURSIDE 3
140 #define SEGSIZEMODE_EDGE 4
141 #define SEGSIZEMODE_VERTEX 5
143 #define SEGSIZEMODE_MIN SEGSIZEMODE_FREE
144 #define SEGSIZEMODE_MAX SEGSIZEMODE_VERTEX
146 //defines a view for an editor window
147 typedef struct editor_view {
148 short ev_num; //each view has it's own number
149 short ev_changed; //set to true if view changed
150 grs_canvas *ev_canv; //points to this window's canvas
151 fix ev_dist; //the distance from the view point
152 vms_matrix ev_matrix; //the view matrix
153 fix ev_zoom; //zoom for this window
161 extern editor_view *Views[];
163 extern grs_canvas *canv_offscreen; //for off-screen rendering
164 extern int Large_view_index;
165 extern UI_GADGET_USERBOX * LargeViewBox;
166 extern int Found_seg_index; // Index in Found_segs corresponding to Cursegp
167 extern int gamestate_not_restored;
170 extern segment *Cursegp; // Pointer to current segment in the mine, the one to which things happen.
171 extern vms_vector Ed_view_target; // what editor is looking at
173 // -- extern segment New_segment; // The segment which can be added to the mine.
174 #define New_segment (Segments[MAX_SEGMENTS-1])
176 extern int Curside; // Side index in 0..MAX_SIDES_PER_SEGMENT of active side.
177 extern int Curedge; // Current edge on current side, in 0..3
178 extern int Curvert; // Current vertex on current side, in 0..3
179 extern int AttachSide; // Side on segment to attach
180 extern int Draw_all_segments; // Set to 1 means draw_world draws all segments in Segments, else draw only connected segments
181 extern segment *Markedsegp; // Marked segment, used in conjunction with *Cursegp to form joints.
182 extern int Markedside; // Marked side on Markedsegp.
183 extern byte Vertex_active[MAX_VERTICES]; // !0 means vertex is in use, 0 means not in use.
185 extern grs_canvas *Pad_text_canvas; // Keypad text
187 // The extra group in the following arrays is used for group rotation.
188 extern group GroupList[MAX_GROUPS+1];
189 extern segment *Groupsegp[MAX_GROUPS+1];
190 extern int Groupside[MAX_GROUPS+1];
191 extern int current_group;
192 extern int num_groups;
193 extern int Current_group;
195 extern short Found_segs[]; // List of segment numbers "found" under cursor click
196 extern int N_found_segs; // Number of segments found at Found_segs
198 extern int N_selected_segs; // Number of segments found at Selected_segs
199 extern short Selected_segs[]; // List of segment numbers currently selected
201 extern int N_warning_segs; // Number of segments warning-worthy, such as a concave segment
202 extern short Warning_segs[]; // List of warning-worthy segments
204 extern int Show_axes_flag; // 0 = don't show, !0 = do show coordinate axes in *Cursegp orientation
206 extern int Autosave_count; // Current counter for which autosave mine we are "on"
207 extern int Autosave_flag; // Whether or not Autosave is on.
208 extern struct tm Editor_time_of_day;
210 extern int SegSizeMode; // Mode = 0/1 = not/is legal to move bound vertices,
212 void init_editor(void);
214 void close_editor(void);
215 void init_editor_screen(void);
217 // Returns true if vertex vi is contained in exactly one segment, else returns false.
218 extern int is_free_vertex(int vi);
220 // Set existing vertex vnum to value *vp.
221 extern int med_set_vertex(int vnum,vms_vector *vp);
223 extern void med_combine_duplicate_vertices(byte *vlp);
225 // Attach side newside of newseg to side destside of destseg.
226 // Copies *newseg into global array Segments, increments Num_segments.
227 // Forms a weld between the two segments by making the new segment fit to the old segment.
228 // Updates number of faces per side if necessitated by new vertex coordinates.
230 // 0 = successful attach
231 // 1 = No room in Segments[].
232 // 2 = No room in Vertices[].
233 extern int med_attach_segment(segment *destseg, segment *newseg, int destside, int newside);
236 // Deletes a segment from the global array Segments.
237 // Updates Cursegp to be the segment to which the deleted segment was connected. If there is
238 // more than one connected segment, the new Cursegp will be the segment with the highest index
239 // of connection in the deleted segment (highest index = front)
241 // 0 = successful deletion
242 // 1 = unable to delete
243 extern int med_delete_segment(segment *sp);
245 // Rotate the segment *seg by the pitch, bank, heading defined by *rot, destructively
246 // modifying its four free vertices in the global array Vertices.
247 // It is illegal to rotate a segment which has MAX_SIDES_PER_SEGMENT != 1.
248 // Pitch, bank, heading are about the point which is the average of the four points
249 // forming the side of connection.
251 // 0 = successful rotation
252 // 1 = MAX_SIDES_PER_SEGMENT makes rotation illegal (connected to 0 or 2+ segments)
253 // 2 = Rotation causes degeneracy, such as self-intersecting segment.
254 extern int med_rotate_segment(segment *seg, vms_matrix *rotmat);
255 extern int med_rotate_segment_ang(segment *seg, vms_angvec *ang);
257 // Scales a segment, destructively modifying vertex coordinates in global Vertices[].
258 // Uses scale factor in sp->scale.
259 // Modifies only free vertices (those which are not part of a segment other than *sp).
260 // The vector *svp contains the x,y,z scale factors. The x,y,z directions are relative
261 // to the segment. x scales in the dimension of the right vector, y of the up vector, z of the forward vector.
262 // The dimension of the vectors is determined by averaging appropriate sets of 4 of the 8 points.
263 extern void med_scale_segment(segment *sp);
265 // Loads mine *name from disk, updating global variables:
266 // Segments, Vertices
267 // Num_segments,Num_vertices
268 // Cursegp = pointer to active segment. Written as an index in med_save_mine, converted to a pointer
271 // 0 = successfully loaded.
272 // 1 = unable to load.
273 extern int med_load_mine(char *name);
275 // Loads game *name from disk.
276 // This function automatically loads mine with name.MIN
277 extern int med_load_game(char *name);
280 // Loads a previous generation mine. Needs to be updated in code.
281 extern int med_load_pmine(char *name);
283 // Saves mine contained in Segments[] and Vertices[].
284 // Num_segments = number of segments in mine.
285 // Num_vertices = number of vertices in mine.
286 // Cursegp = current segment.
287 // Saves Num_segments, and index of current segment (which is Cursegp - Segments), which will be converted to a pointer
288 // and written to Cursegp in med_load_mine.
290 // 0 = successfully saved.
291 // 1 = unable to save.
292 extern int med_save_mine(char *name);
294 // Loads group *filename from disk.
295 // Adds group to global Segments and Vertices array.
297 // 0 = successfully loaded.
298 // 1 = unable to load.
299 extern int med_load_group( char *filename, short *vertex_ids, short *segment_ids, int *num_vertices, int *num_segments);
301 // Saves group *filename from disk.
302 // Saves group defined by vertex_ids and segment_ids to disk.
304 // 0 = successfully saved.
305 // 1 = unable to save.
306 extern int med_save_group( char *filename, short *vertex_ids, short *segment_ids, int num_vertices, int num_segments);
308 // Updates the screen... (I put the prototype here for curves.c)
309 extern int medlisp_update_screen();
311 // Returns 0 if no error, 1 if error, whatever that might be.
315 // Cursegp = pointer to only segment.
316 extern int create_new_mine(void);
318 // extern void med_create_segment(segment *sp, vms_vector *scale);
319 extern void old_med_attach_segment(segment *sp,int main_side,int branch_side,fix cx, fix cy, fix cz, fix length, fix width, fix height, vms_matrix *mp);
321 // Copy a segment from *ssp to *dsp. Do not simply copy the struct. Use *dsp's vertices, copying in
322 // just the values, not the indices.
323 extern void med_copy_segment(segment *dsp,segment *ssp);
325 // Create a default segment.
326 // Useful for when user creates a garbage segment.
327 extern void med_create_default_segment(segment *sp);
329 // Create New_segment with sizes found in *scale.
330 extern void med_create_new_segment(vms_vector *scale);
332 // Create New_segment with sizes found in Cursegp.
333 extern void med_create_new_segment_from_cursegp(void);
335 // Update New_segment using scale factors.
336 extern void med_update_new_segment(void);
338 // Replace *sp with New_segment.
339 extern void med_update_segment(segment *sp);
341 // Create a new segment and use it to form a bridge between two existing segments.
342 // Specify two segment:side pairs. If either segment:side is not open (ie, segment->children[side] != -1)
343 // then it is not legal to form the brider.
345 // 0 bridge segment formed
346 // 1 unable to form bridge because one (or both) of the sides is not open.
347 // Note that no new vertices are created by this process.
348 extern int med_form_bridge_segment(segment *seg1, int side1, segment *seg2, int side2);
350 // Compress mine at Segments and Vertices by squeezing out all holes.
351 // If no holes (ie, an unused segment followed by a used segment), then no action.
352 // If Cursegp or Markedsegp is a segment which gets moved to fill in a hole, then
353 // they are properly updated.
354 extern void med_compress_mine(void);
356 // Extract the forward vector from segment *sp, return in *vp.
357 // The forward vector is defined to be the vector from the the center of the front face of the segment
358 // to the center of the back face of the segment.
359 extern void med_extract_forward_vector_from_segment(segment *sp,vms_vector *vp);
361 // Extract the right vector from segment *sp, return in *vp.
362 // The forward vector is defined to be the vector from the the center of the left face of the segment
363 // to the center of the right face of the segment.
364 extern void med_extract_right_vector_from_segment(segment *sp,vms_vector *vp);
366 // Extract the up vector from segment *sp, return in *vp.
367 // The forward vector is defined to be the vector from the the center of the bottom face of the segment
368 // to the center of the top face of the segment.
369 extern void med_extract_up_vector_from_segment(segment *sp,vms_vector *vp);
371 // Compute the center point of a side of a segment.
372 // The center point is defined to be the average of the 4 points defining the side.
373 extern void med_compute_center_point_on_side(vms_vector *vp,segment *sp,int side);
375 extern void set_matrix_based_on_side(vms_matrix *rotmat,int destside);
377 // Given a forward vector, compute and return an angvec triple.
378 // [ THIS SHOULD BE MOVED TO THE VECTOR MATRIX LIBRARY ]
379 extern vms_angvec *vm_vec_to_angles(vms_angvec *result, vms_vector *forvec);
384 #define ACCURACY 0.1*F1_0
386 typedef struct vms_equation {
388 struct {fix x3, x2, x1, x0, y3, y2, y1, y0, z3, z2, z1, z0;};
393 extern void create_curve(vms_vector *p1, vms_vector *p4, vms_vector *r1, vms_vector *r4, vms_equation *coeffs);
394 // Q(t) = (2t^3 - 3t^2 + 1) p1 + (-2t^3 + 3t^2) p4 + (t^3 - 2t^2 + t) r1 + (t^3 - t^2 ) r4
396 extern vms_vector evaluate_curve(vms_equation *coeffs, int degree, fix t);
398 extern fix curve_dist(vms_equation *coeffs, int degree, fix t0, vms_vector *p0, fix dist);
400 extern void curve_dir(vms_equation *coeffs, int degree, fix t0, vms_vector *dir);
402 extern void plot_parametric(vms_equation *coeffs, fix min_t, fix max_t, fix del_t);
404 // Curve generation routine.
405 // Returns 1 if curve is generated.
406 // Returns 0 if no curve.
407 extern int generate_curve( fix r1scale, fix r4scale );
409 // Deletes existing curve generated in generate_curve().
410 extern void delete_curve();
412 // --- // -- Temporary function, identical to med_rotate_segment, but it takes a vector instead of an angvec
413 // --- extern int med_rotate_segment_vec(segment *seg, vms_vector *vec);
415 extern void med_extract_matrix_from_segment(segment *sp,vms_matrix *rotmat);
417 // Assign default u,v coordinates to all sides of a segment.
418 // This routine should only be used for segments which are not connected to anything else,
419 // ie the segment created at mine creation.
420 extern void assign_default_uvs_to_segment(segment *segp);
421 extern void assign_default_uvs_to_side(segment *segp, int side);
423 extern void assign_default_uvs_to_side(segment *segp,int side);
425 // Assign u,v coordinates to con_seg, con_common_side from base_seg, base_common_side
426 // They are connected at the edge defined by the vertices abs_id1, abs_id2.
427 extern void med_assign_uvs_to_side(segment *con_seg, int con_common_side, segment *base_seg, int base_common_side, int abs_id1, int abs_id2);
429 // Debug -- show a matrix.
430 // type: 0 --> mprintf, 1 --> printf
431 // *s = string to display
432 // *mp = matrix to display
433 extern void show_matrix(char *s,vms_matrix *mp,int type);
435 // Create coordinate axes in orientation of specified segment, stores vertices at *vp.
436 extern void create_coordinate_axes_from_segment(segment *sp,short *vertnums);
438 // Scale a segment. Then, if it is connected to something, rotate it.
439 extern int med_scale_and_rotate_segment(segment *seg, vms_angvec *rot);
441 // Set Vertex_active to number of occurrences of each vertex.
443 extern void set_vertex_counts(void);
445 // Modify seg2 to share side2 with seg1:side1. This forms a connection between
446 // two segments without creating a new segment. It modifies seg2 by sharing
447 // vertices from seg1. seg1 is not modified. Four vertices from seg2 are
449 // If the four vertices forming side2 in seg2 are not free, the joint is not formed.
452 // 1 unable to form joint because one or more vertices of side2 is not free
453 // 2 unable to form joint because side1 is already used
454 extern int med_form_joint(segment *seg1, int side1, segment *seg2, int side2);
456 // The current texture... use by saying something=bm_lock_bitmap(CurrentTexture)
457 extern int CurrentTexture;
459 extern void compute_segment_center(vms_vector *vp,segment *sp);
461 extern void med_propagate_tmaps_to_segments(segment *base_seg,segment *con_seg, int uv_only_flag);
463 extern void med_propagate_tmaps_to_back_side(segment *base_seg, int back_side, int uv_only_flag);
465 extern void med_propagate_tmaps_to_any_side(segment *base_seg, int back_side, int tmap_num, int uv_only_flag);
467 // Find segment adjacent to sp:side.
468 // Adjacent means a segment which shares all four vertices.
469 // Return true if segment found and fill in segment in adj_sp and side in adj_side.
470 // Return false if unable to find, in which case adj_sp and adj_side are undefined.
471 extern int med_find_adjacent_segment_side(segment *sp, int side, segment **adj_sp, int *adj_side);
473 // Finds the closest segment and side to sp:side.
474 extern int med_find_closest_threshold_segment_side(segment *sp, int side, segment **adj_sp, int *adj_side, fix threshold);
476 // Given two segments, return the side index in the connecting segment which connects to the base segment
477 extern int find_connect_side(segment *base_seg, segment *con_seg);
479 // Select previous segment.
480 // If there is a connection on the side opposite to the current side, then choose that segment.
481 // If there is no connecting segment on the opposite face, try any segment.
482 extern void get_previous_segment(int curseg_num, int curside,int *newseg_num, int *newside);
484 // Select next segment.
485 // If there is a connection on the current side, then choose that segment.
486 // If there is no connecting segment on the current side, try any segment.
487 extern void get_next_segment(int curseg_num, int curside, int *newseg_num, int *newside);
489 // Copy texture maps in newseg to nsp.
490 extern void copy_uvs_seg_to_seg(segment *nsp,segment *newseg);
492 // Return true if segment is concave.
493 extern int check_seg_concavity(segment *s);
495 // Return N_found_segs = number of concave segments in mine.
496 // Segment ids stored at Found_segs
497 extern void find_concave_segs(void);
499 // High level call. Check for concave segments, print warning message (using editor_status)
500 // if any concave segments.
501 // Calls find_concave_segs, therefore N_found_segs gets set, and Found_segs filled in.
502 extern void warn_if_concave_segments(void);
504 // Warn if segment s is concave.
505 extern void warn_if_concave_segment(segment *s);
507 // Add a vertex to the vertex list.
508 extern int med_add_vertex(vms_vector *vp);
510 // Add a vertex to the vertex list which may be identical to another vertex (in terms of coordinates).
511 // Don't scan list, looking for presence of a vertex with same coords, add this one.
512 extern int med_create_duplicate_vertex(vms_vector *vp);
514 // Create a new segment, duplicating exactly, including vertex ids and children, the passed segment.
515 extern int med_create_duplicate_segment(segment *sp);
517 // Returns the index of a free segment.
518 // Scans the Segments array.
519 extern int get_free_segment_number(void);
521 // Diagnostic message.
522 extern void diagnostic_message(const char *format, ... );
525 extern void print_status_icon( char icon[1], int position );
526 extern void clear_status_icon( char icon[1], int position );
528 // Editor status message.
529 extern void editor_status(const char *format, ... );
531 // Variables in editor.c that the k*.c files need
533 #define UF_NONE 0x000 //nothing has changed
534 #define UF_WORLD_CHANGED 0x001 //something added or deleted
535 #define UF_VIEWPOINT_MOVED 0x002 //what we're watching has moved
537 #define UF_GAME_VIEW_CHANGED 0x004 //the game window changed
538 #define UF_ED_STATE_CHANGED 0x008 //something like curside,curseg changed
540 #define UF_ALL 0xffffffff //all flags
542 extern uint Update_flags;
543 extern int Funky_chase_mode;
544 extern vms_angvec Seg_orientation;
545 extern vms_vector Seg_scale;
546 extern int mine_changed;
548 extern editor_view *current_view;
550 //the view for the different windows
551 extern editor_view LargeView;
552 extern editor_view TopView;
553 extern editor_view FrontView;
554 extern editor_view RightView;
556 extern void set_view_target_from_segment(segment *sp);
557 extern int SafetyCheck();
559 extern void editor_status( const char *format, ...);
561 extern int MacroNumEvents;
562 extern int MacroStatus;
564 //extern int Highest_vertex_index; // Highest index in Vertices and Vertex_active, an efficiency hack
565 //extern int Highest_segment_index; // Highest index in Segments, an efficiency hack
566 extern int Lock_view_to_cursegp; // !0 means whenever cursegp changes, view it
569 extern int Num_tilings; // number of tilings/wall
570 extern int Degenerate_segment_found;
572 extern byte Been_visited[]; // List of segments visited in a recursive search, if element n set, segment n done been visited
574 // Initializes autosave system.
575 // Sets global Autosave_count to 0.
576 extern void init_autosave(void);
578 // Closes autosave system.
579 // Deletes all autosaved files.
580 extern void close_autosave(void);
582 // Saves current mine to name.miX where name = suffix of mine name and X = Autosave_count.
583 // For example, if name = "cookie.min", and Autosave_count = 3, then writes "cookie.mi3".
584 // Increments Autosave_count, wrapping from 9 to 0.
585 // (If there is no current mine name, assume "temp.min")
586 // Call med_save_mine to save the mine.
587 extern void autosave_mine(char *name);
590 extern void TimedAutosave(char *name);
591 extern void set_editor_time_of_day();
594 extern int undo(void);
595 extern char mine_filename[128];
596 extern char undo_status[10][100];
599 int AttachSegmentNewAng(vms_angvec *pbh);
600 int RotateSegmentNew(vms_angvec *pbh);
601 int rotate_segment_new(vms_angvec *pbh);
603 //get & free vertices
605 void free_vert(int vert_num);
607 // The current robot type declared in eglobal.c
608 extern int Cur_robot_type;
611 extern int DisplayCurrentRobotType(void);
612 extern short Cur_object_index;
614 extern int render_3d_in_big_window;
615 extern void move_object_to_mouse_click(void);
617 //these are instances of canvases, pointed to by variables below
618 extern grs_canvas _canv_editor_game; //the game on the editor screen
620 //these are pointers to our canvases
621 extern grs_canvas *Canv_editor; //the editor screen
622 extern grs_canvas *Canv_editor_game; //the game on the editor screen
624 extern grs_canvas *canv_offscreen; //for off-screen rendering
625 extern grs_canvas *Pad_text_canvas; // Keypad text
627 //where the editor is looking
628 extern vms_vector Ed_view_target;
630 extern int gamestate_not_restored;
632 extern UI_WINDOW * EditorWindow;
634 extern int Large_view_index;
636 extern UI_GADGET_USERBOX * GameViewBox;
637 extern UI_GADGET_USERBOX * LargeViewBox;
638 extern UI_GADGET_USERBOX * GroupViewBox;
640 extern void med_point_2_vec(grs_canvas *canv,vms_vector *v,short sx,short sy);
642 //shutdown ui on the editor screen
643 void close_editor_screen(void);
646 extern int place_object(segment *segp, vms_vector *object_pos, int object_type);
649 extern void med_extract_up_vector_from_segment_side(segment *sp, int sidenum, vms_vector *vp);
650 extern void med_extract_right_vector_from_segment_side(segment *sp, int sidenum, vms_vector *vp);
651 extern void med_extract_forward_vector_from_segment_side(segment *sp, int sidenum, vms_vector *vp);
654 extern void draw_world_from_game(void);
657 extern void close_all_windows(void);
661 // Amount to stretch a texture map by.
662 // The two different ones are for the two dimensions of a texture map.
663 extern fix Stretch_scale_x, Stretch_scale_y;