1 /* $Id: editor.h,v 1.6 2005-01-24 21:11:58 schaffner Exp $ */
3 THE COMPUTER CODE CONTAINED HEREIN IS THE SOLE PROPERTY OF PARALLAX
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5 END-USERS, AND SUBJECT TO ALL OF THE TERMS AND CONDITIONS HEREIN, GRANTS A
6 ROYALTY-FREE, PERPETUAL LICENSE TO SUCH END-USERS FOR USE BY SUCH END-USERS
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8 SUCH USE, DISPLAY OR CREATION IS FOR NON-COMMERCIAL, ROYALTY OR REVENUE
9 FREE PURPOSES. IN NO EVENT SHALL THE END-USER USE THE COMPUTER CODE
10 CONTAINED HEREIN FOR REVENUE-BEARING PURPOSES. THE END-USER UNDERSTANDS
11 AND AGREES TO THE TERMS HEREIN AND ACCEPTS THE SAME BY USE OF THIS FILE.
12 COPYRIGHT 1993-1999 PARALLAX SOFTWARE CORPORATION. ALL RIGHTS RESERVED.
17 * FIXME: put description here
35 #define ORTHO_VIEWS 0 // set to 1 to enable 3 orthogonal views
36 #define ED_SCREEN_W 800 //width of editor screen
37 #define ED_SCREEN_H 600 //height of editor screen
41 #define GAMEVIEW_X 1 //where the 320x200 game window goes
42 #define GAMEVIEW_Y 1+MENUBAR_H
43 #define GAMEVIEW_W 320
44 #define GAMEVIEW_H 200
48 #define STATUS_Y (ED_SCREEN_H-STATUS_H)
49 #define STATUS_W ED_SCREEN_W
51 #define LVIEW_X 1 //large view
52 #define LVIEW_Y (GAMEVIEW_Y+GAMEVIEW_H+2)
54 #define LVIEW_H (STATUS_Y-LVIEW_Y-2)
56 #define TMAPBOX_X (LVIEW_X+LVIEW_W+4) //location of first one
57 #define TMAPBOX_Y (LVIEW_Y+2)
61 #define TMAPCURBOX_X (TMAPBOX_X + 4*(TMAPBOX_W + 3))
62 #define TMAPCURBOX_Y (TMAPBOX_Y + TMAPBOX_H)
64 #define OBJCURBOX_X (TMAPCURBOX_X)
65 #define OBJCURBOX_Y (TMAPCURBOX_Y + 3*(TMAPBOX_H + 2) -40)
67 #define PAD_X (GAMEVIEW_X + GAMEVIEW_W + 16)
68 #define PAD_Y (GAMEVIEW_Y + 4)
70 #define SMALLVIEW_W 173 //width of small view windows
71 #define SMALLVIEW_H 148 //height of small view windows
73 #define TVIEW_X (LVIEW_X+LVIEW_W+2) //top view
74 #define TVIEW_Y LVIEW_Y
75 #define TVIEW_W SMALLVIEW_W
76 #define TVIEW_H SMALLVIEW_H
78 #define FVIEW_X TVIEW_X //front view
79 #define FVIEW_Y (TVIEW_Y+SMALLVIEW_H+2)
80 #define FVIEW_W SMALLVIEW_W
81 #define FVIEW_H SMALLVIEW_H
83 #define RVIEW_X (TVIEW_X+SMALLVIEW_W+2) //right view
84 #define RVIEW_Y FVIEW_Y
85 #define RVIEW_W SMALLVIEW_W
86 #define RVIEW_H SMALLVIEW_H
88 #define GVIEW_X RVIEW_X //group view
89 #define GVIEW_Y TVIEW_Y
90 #define GVIEW_W SMALLVIEW_W
91 #define GVIEW_H SMALLVIEW_H
93 //there were color constants here, but I moved them to meddraw.c - Matt
95 #define SEGMOVE_PAD_ID 0
96 #define SEGSIZE_PAD_ID 1
97 #define CURVE_PAD_ID 2
98 #define TEXTURE_PAD_ID 3
99 #define OBJECT_PAD_ID 4
100 #define OBJMOV_PAD_ID 5
101 #define GROUP_PAD_ID 6
102 #define LIGHTING_PAD_ID 7
103 #define TEST_PAD_ID 8
114 // Default size of a segment
115 #define DEFAULT_X_SIZE F1_0*20
116 #define DEFAULT_Y_SIZE F1_0*20
117 #define DEFAULT_Z_SIZE F1_0*20
119 // Scale factor from 3d units (integer portion) to uv coordinates (integer portion)
120 #define VMAG (F1_0 / (DEFAULT_X_SIZE/F1_0))
121 #define UMAG VMAG // unused
123 // Number of segments which can be found (size of Found_segs[])
124 #define MAX_FOUND_SEGS 200
125 #define MAX_SELECTED_SEGS (MAX_SEGMENTS)
126 #define MAX_WARNING_SEGS (MAX_SEGMENTS)
128 #define MAX_GROUPS 10
129 #define ROT_GROUP MAX_GROUPS
131 // Modes for segment sizing
132 #define SEGSIZEMODE_FREE 1
133 #define SEGSIZEMODE_ALL 2
134 #define SEGSIZEMODE_CURSIDE 3
135 #define SEGSIZEMODE_EDGE 4
136 #define SEGSIZEMODE_VERTEX 5
138 #define SEGSIZEMODE_MIN SEGSIZEMODE_FREE
139 #define SEGSIZEMODE_MAX SEGSIZEMODE_VERTEX
141 //defines a view for an editor window
142 typedef struct editor_view {
143 short ev_num; //each view has it's own number
144 short ev_changed; //set to true if view changed
145 grs_canvas *ev_canv; //points to this window's canvas
146 fix ev_dist; //the distance from the view point
147 vms_matrix ev_matrix; //the view matrix
148 fix ev_zoom; //zoom for this window
156 extern editor_view *Views[];
158 extern grs_canvas *canv_offscreen; //for off-screen rendering
159 extern int Large_view_index;
160 extern UI_GADGET_USERBOX * LargeViewBox;
161 extern int Found_seg_index; // Index in Found_segs corresponding to Cursegp
162 extern int gamestate_not_restored;
165 extern segment *Cursegp; // Pointer to current segment in the mine, the one to which things happen.
166 #define Curseg2p s2s2(Cursegp) // Pointer to segment2 for Cursegp
168 extern vms_vector Ed_view_target; // what editor is looking at
170 // -- extern segment New_segment; // The segment which can be added to the mine.
171 #define New_segment (Segments[MAX_SEGMENTS-1])
173 extern int Curside; // Side index in 0..MAX_SIDES_PER_SEGMENT of active side.
174 extern int Curedge; // Current edge on current side, in 0..3
175 extern int Curvert; // Current vertex on current side, in 0..3
176 extern int AttachSide; // Side on segment to attach
177 extern int Draw_all_segments; // Set to 1 means draw_world draws all segments in Segments, else draw only connected segments
178 extern segment *Markedsegp; // Marked segment, used in conjunction with *Cursegp to form joints.
179 extern int Markedside; // Marked side on Markedsegp.
180 extern sbyte Vertex_active[MAX_VERTICES]; // !0 means vertex is in use, 0 means not in use.
182 extern grs_canvas *Pad_text_canvas; // Keypad text
184 // The extra group in the following arrays is used for group rotation.
185 extern group GroupList[MAX_GROUPS+1];
186 extern segment *Groupsegp[MAX_GROUPS+1];
187 extern int Groupside[MAX_GROUPS+1];
188 extern int current_group;
189 extern int num_groups;
190 extern int Current_group;
192 extern short Found_segs[]; // List of segment numbers "found" under cursor click
193 extern int N_found_segs; // Number of segments found at Found_segs
195 extern int N_selected_segs; // Number of segments found at Selected_segs
196 extern short Selected_segs[]; // List of segment numbers currently selected
198 extern int N_warning_segs; // Number of segments warning-worthy, such as a concave segment
199 extern short Warning_segs[]; // List of warning-worthy segments
201 extern int Show_axes_flag; // 0 = don't show, !0 = do show coordinate axes in *Cursegp orientation
203 extern int Autosave_count; // Current counter for which autosave mine we are "on"
204 extern int Autosave_flag; // Whether or not Autosave is on.
205 extern struct tm Editor_time_of_day;
207 extern int SegSizeMode; // Mode = 0/1 = not/is legal to move bound vertices,
209 void init_editor(void);
211 void close_editor(void);
212 void init_editor_screen(void);
214 // Returns true if vertex vi is contained in exactly one segment, else returns false.
215 extern int is_free_vertex(int vi);
217 // Set existing vertex vnum to value *vp.
218 extern int med_set_vertex(int vnum,vms_vector *vp);
220 extern void med_combine_duplicate_vertices(sbyte *vlp);
222 // Attach side newside of newseg to side destside of destseg.
223 // Copies *newseg into global array Segments, increments Num_segments.
224 // Forms a weld between the two segments by making the new segment fit to the old segment.
225 // Updates number of faces per side if necessitated by new vertex coordinates.
227 // 0 = successful attach
228 // 1 = No room in Segments[].
229 // 2 = No room in Vertices[].
230 extern int med_attach_segment(segment *destseg, segment *newseg, int destside, int newside);
233 // Deletes a segment from the global array Segments.
234 // Updates Cursegp to be the segment to which the deleted segment was connected. If there is
235 // more than one connected segment, the new Cursegp will be the segment with the highest index
236 // of connection in the deleted segment (highest index = front)
238 // 0 = successful deletion
239 // 1 = unable to delete
240 extern int med_delete_segment(segment *sp);
242 // Rotate the segment *seg by the pitch, bank, heading defined by *rot, destructively
243 // modifying its four free vertices in the global array Vertices.
244 // It is illegal to rotate a segment which has MAX_SIDES_PER_SEGMENT != 1.
245 // Pitch, bank, heading are about the point which is the average of the four points
246 // forming the side of connection.
248 // 0 = successful rotation
249 // 1 = MAX_SIDES_PER_SEGMENT makes rotation illegal (connected to 0 or 2+ segments)
250 // 2 = Rotation causes degeneracy, such as self-intersecting segment.
251 extern int med_rotate_segment(segment *seg, vms_matrix *rotmat);
252 extern int med_rotate_segment_ang(segment *seg, vms_angvec *ang);
254 // Scales a segment, destructively modifying vertex coordinates in global Vertices[].
255 // Uses scale factor in sp->scale.
256 // Modifies only free vertices (those which are not part of a segment other than *sp).
257 // The vector *svp contains the x,y,z scale factors. The x,y,z directions are relative
258 // to the segment. x scales in the dimension of the right vector, y of the up vector, z of the forward vector.
259 // The dimension of the vectors is determined by averaging appropriate sets of 4 of the 8 points.
260 extern void med_scale_segment(segment *sp);
262 // Loads mine *name from disk, updating global variables:
263 // Segments, Vertices
264 // Num_segments,Num_vertices
265 // Cursegp = pointer to active segment. Written as an index in med_save_mine, converted to a pointer
268 // 0 = successfully loaded.
269 // 1 = unable to load.
270 extern int med_load_mine(char *name);
272 // Loads game *name from disk.
273 // This function automatically loads mine with name.MIN
274 extern int med_load_game(char *name);
277 // Loads a previous generation mine. Needs to be updated in code.
278 extern int med_load_pmine(char *name);
280 // Saves mine contained in Segments[] and Vertices[].
281 // Num_segments = number of segments in mine.
282 // Num_vertices = number of vertices in mine.
283 // Cursegp = current segment.
284 // Saves Num_segments, and index of current segment (which is Cursegp - Segments), which will be converted to a pointer
285 // and written to Cursegp in med_load_mine.
287 // 0 = successfully saved.
288 // 1 = unable to save.
289 extern int med_save_mine(char *name);
291 // Loads group *filename from disk.
292 // Adds group to global Segments and Vertices array.
294 // 0 = successfully loaded.
295 // 1 = unable to load.
296 extern int med_load_group( char *filename, short *vertex_ids, short *segment_ids, int *num_vertices, int *num_segments);
298 // Saves group *filename from disk.
299 // Saves group defined by vertex_ids and segment_ids to disk.
301 // 0 = successfully saved.
302 // 1 = unable to save.
303 extern int med_save_group( char *filename, short *vertex_ids, short *segment_ids, int num_vertices, int num_segments);
305 // Updates the screen... (I put the prototype here for curves.c)
306 extern int medlisp_update_screen();
308 // Returns 0 if no error, 1 if error, whatever that might be.
312 // Cursegp = pointer to only segment.
313 extern int create_new_mine(void);
315 // extern void med_create_segment(segment *sp, vms_vector *scale);
316 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);
318 // Copy a segment from *ssp to *dsp. Do not simply copy the struct. Use *dsp's vertices, copying in
319 // just the values, not the indices.
320 extern void med_copy_segment(segment *dsp,segment *ssp);
322 // Create a default segment.
323 // Useful for when user creates a garbage segment.
324 extern void med_create_default_segment(segment *sp);
326 // Create New_segment with sizes found in *scale.
327 extern void med_create_new_segment(vms_vector *scale);
329 // Create New_segment with sizes found in Cursegp.
330 extern void med_create_new_segment_from_cursegp(void);
332 // Update New_segment using scale factors.
333 extern void med_update_new_segment(void);
335 // Replace *sp with New_segment.
336 extern void med_update_segment(segment *sp);
338 // Create a new segment and use it to form a bridge between two existing segments.
339 // Specify two segment:side pairs. If either segment:side is not open (ie, segment->children[side] != -1)
340 // then it is not legal to form the brider.
342 // 0 bridge segment formed
343 // 1 unable to form bridge because one (or both) of the sides is not open.
344 // Note that no new vertices are created by this process.
345 extern int med_form_bridge_segment(segment *seg1, int side1, segment *seg2, int side2);
347 // Compress mine at Segments and Vertices by squeezing out all holes.
348 // If no holes (ie, an unused segment followed by a used segment), then no action.
349 // If Cursegp or Markedsegp is a segment which gets moved to fill in a hole, then
350 // they are properly updated.
351 extern void med_compress_mine(void);
353 // Extract the forward vector from segment *sp, return in *vp.
354 // The forward vector is defined to be the vector from the the center of the front face of the segment
355 // to the center of the back face of the segment.
356 extern void med_extract_forward_vector_from_segment(segment *sp,vms_vector *vp);
358 // Extract the right vector from segment *sp, return in *vp.
359 // The forward vector is defined to be the vector from the the center of the left face of the segment
360 // to the center of the right face of the segment.
361 extern void med_extract_right_vector_from_segment(segment *sp,vms_vector *vp);
363 // Extract the up vector from segment *sp, return in *vp.
364 // The forward vector is defined to be the vector from the the center of the bottom face of the segment
365 // to the center of the top face of the segment.
366 extern void med_extract_up_vector_from_segment(segment *sp,vms_vector *vp);
368 // Compute the center point of a side of a segment.
369 // The center point is defined to be the average of the 4 points defining the side.
370 extern void med_compute_center_point_on_side(vms_vector *vp,segment *sp,int side);
372 extern void set_matrix_based_on_side(vms_matrix *rotmat,int destside);
374 // Given a forward vector, compute and return an angvec triple.
375 // [ THIS SHOULD BE MOVED TO THE VECTOR MATRIX LIBRARY ]
376 extern vms_angvec *vm_vec_to_angles(vms_angvec *result, vms_vector *forvec);
381 #define ACCURACY 0.1*F1_0
383 typedef struct vms_equation {
385 struct {fix x3, x2, x1, x0, y3, y2, y1, y0, z3, z2, z1, z0;} n;
390 extern void create_curve(vms_vector *p1, vms_vector *p4, vms_vector *r1, vms_vector *r4, vms_equation *coeffs);
391 // Q(t) = (2t^3 - 3t^2 + 1) p1 + (-2t^3 + 3t^2) p4 + (t^3 - 2t^2 + t) r1 + (t^3 - t^2 ) r4
393 extern vms_vector evaluate_curve(vms_equation *coeffs, int degree, fix t);
395 extern fix curve_dist(vms_equation *coeffs, int degree, fix t0, vms_vector *p0, fix dist);
397 extern void curve_dir(vms_equation *coeffs, int degree, fix t0, vms_vector *dir);
399 extern void plot_parametric(vms_equation *coeffs, fix min_t, fix max_t, fix del_t);
401 // Curve generation routine.
402 // Returns 1 if curve is generated.
403 // Returns 0 if no curve.
404 extern int generate_curve( fix r1scale, fix r4scale );
406 // Deletes existing curve generated in generate_curve().
407 extern void delete_curve();
409 // --- // -- Temporary function, identical to med_rotate_segment, but it takes a vector instead of an angvec
410 // --- extern int med_rotate_segment_vec(segment *seg, vms_vector *vec);
412 extern void med_extract_matrix_from_segment(segment *sp,vms_matrix *rotmat);
414 // Assign default u,v coordinates to all sides of a segment.
415 // This routine should only be used for segments which are not connected to anything else,
416 // ie the segment created at mine creation.
417 extern void assign_default_uvs_to_segment(segment *segp);
418 extern void assign_default_uvs_to_side(segment *segp, int side);
420 extern void assign_default_uvs_to_side(segment *segp,int side);
422 // Assign u,v coordinates to con_seg, con_common_side from base_seg, base_common_side
423 // They are connected at the edge defined by the vertices abs_id1, abs_id2.
424 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);
426 // Debug -- show a matrix.
427 // type: 0 --> mprintf, 1 --> printf
428 // *s = string to display
429 // *mp = matrix to display
430 extern void show_matrix(char *s,vms_matrix *mp,int type);
432 // Create coordinate axes in orientation of specified segment, stores vertices at *vp.
433 extern void create_coordinate_axes_from_segment(segment *sp,short *vertnums);
435 // Scale a segment. Then, if it is connected to something, rotate it.
436 extern int med_scale_and_rotate_segment(segment *seg, vms_angvec *rot);
438 // Set Vertex_active to number of occurrences of each vertex.
440 extern void set_vertex_counts(void);
442 // Modify seg2 to share side2 with seg1:side1. This forms a connection between
443 // two segments without creating a new segment. It modifies seg2 by sharing
444 // vertices from seg1. seg1 is not modified. Four vertices from seg2 are
446 // If the four vertices forming side2 in seg2 are not free, the joint is not formed.
449 // 1 unable to form joint because one or more vertices of side2 is not free
450 // 2 unable to form joint because side1 is already used
451 extern int med_form_joint(segment *seg1, int side1, segment *seg2, int side2);
453 // The current texture... use by saying something=bm_lock_bitmap(CurrentTexture)
454 extern int CurrentTexture;
456 extern void compute_segment_center(vms_vector *vp,segment *sp);
458 extern void med_propagate_tmaps_to_segments(segment *base_seg,segment *con_seg, int uv_only_flag);
460 extern void med_propagate_tmaps_to_back_side(segment *base_seg, int back_side, int uv_only_flag);
462 extern void med_propagate_tmaps_to_any_side(segment *base_seg, int back_side, int tmap_num, int uv_only_flag);
464 // Find segment adjacent to sp:side.
465 // Adjacent means a segment which shares all four vertices.
466 // Return true if segment found and fill in segment in adj_sp and side in adj_side.
467 // Return false if unable to find, in which case adj_sp and adj_side are undefined.
468 extern int med_find_adjacent_segment_side(segment *sp, int side, segment **adj_sp, int *adj_side);
470 // Finds the closest segment and side to sp:side.
471 extern int med_find_closest_threshold_segment_side(segment *sp, int side, segment **adj_sp, int *adj_side, fix threshold);
473 // Given two segments, return the side index in the connecting segment which connects to the base segment
474 extern int find_connect_side(segment *base_seg, segment *con_seg);
476 // Select previous segment.
477 // If there is a connection on the side opposite to the current side, then choose that segment.
478 // If there is no connecting segment on the opposite face, try any segment.
479 extern void get_previous_segment(int curseg_num, int curside,int *newseg_num, int *newside);
481 // Select next segment.
482 // If there is a connection on the current side, then choose that segment.
483 // If there is no connecting segment on the current side, try any segment.
484 extern void get_next_segment(int curseg_num, int curside, int *newseg_num, int *newside);
486 // Copy texture maps in newseg to nsp.
487 extern void copy_uvs_seg_to_seg(segment *nsp,segment *newseg);
489 // Return true if segment is concave.
490 extern int check_seg_concavity(segment *s);
492 // Return N_found_segs = number of concave segments in mine.
493 // Segment ids stored at Found_segs
494 extern void find_concave_segs(void);
496 // High level call. Check for concave segments, print warning message (using editor_status)
497 // if any concave segments.
498 // Calls find_concave_segs, therefore N_found_segs gets set, and Found_segs filled in.
499 extern void warn_if_concave_segments(void);
501 // Warn if segment s is concave.
502 extern void warn_if_concave_segment(segment *s);
504 // Add a vertex to the vertex list.
505 extern int med_add_vertex(vms_vector *vp);
507 // Add a vertex to the vertex list which may be identical to another vertex (in terms of coordinates).
508 // Don't scan list, looking for presence of a vertex with same coords, add this one.
509 extern int med_create_duplicate_vertex(vms_vector *vp);
511 // Create a new segment, duplicating exactly, including vertex ids and children, the passed segment.
512 extern int med_create_duplicate_segment(segment *sp);
514 // Returns the index of a free segment.
515 // Scans the Segments array.
516 extern int get_free_segment_number(void);
518 // Diagnostic message.
519 extern void diagnostic_message(const char *format, ... );
522 extern void print_status_icon( char icon[1], int position );
523 extern void clear_status_icon( char icon[1], int position );
525 // Editor status message.
526 extern void editor_status(const char *format, ... );
528 // Variables in editor.c that the k*.c files need
530 #define UF_NONE 0x000 //nothing has changed
531 #define UF_WORLD_CHANGED 0x001 //something added or deleted
532 #define UF_VIEWPOINT_MOVED 0x002 //what we're watching has moved
534 #define UF_GAME_VIEW_CHANGED 0x004 //the game window changed
535 #define UF_ED_STATE_CHANGED 0x008 //something like curside,curseg changed
537 #define UF_ALL 0xffffffff //all flags
539 extern uint Update_flags;
540 extern int Funky_chase_mode;
541 extern vms_angvec Seg_orientation;
542 extern vms_vector Seg_scale;
543 extern int mine_changed;
545 extern editor_view *current_view;
547 //the view for the different windows
548 extern editor_view LargeView;
549 extern editor_view TopView;
550 extern editor_view FrontView;
551 extern editor_view RightView;
553 extern void set_view_target_from_segment(segment *sp);
554 extern int SafetyCheck();
556 extern void editor_status( const char *format, ...);
558 extern int MacroNumEvents;
559 extern int MacroStatus;
561 //extern int Highest_vertex_index; // Highest index in Vertices and Vertex_active, an efficiency hack
562 //extern int Highest_segment_index; // Highest index in Segments, an efficiency hack
563 extern int Lock_view_to_cursegp; // !0 means whenever cursegp changes, view it
566 extern int Num_tilings; // number of tilings/wall
567 extern int Degenerate_segment_found;
569 extern sbyte Been_visited[]; // List of segments visited in a recursive search, if element n set, segment n done been visited
571 // Initializes autosave system.
572 // Sets global Autosave_count to 0.
573 extern void init_autosave(void);
575 // Closes autosave system.
576 // Deletes all autosaved files.
577 extern void close_autosave(void);
579 // Saves current mine to name.miX where name = suffix of mine name and X = Autosave_count.
580 // For example, if name = "cookie.min", and Autosave_count = 3, then writes "cookie.mi3".
581 // Increments Autosave_count, wrapping from 9 to 0.
582 // (If there is no current mine name, assume "temp.min")
583 // Call med_save_mine to save the mine.
584 extern void autosave_mine(char *name);
587 extern void TimedAutosave(char *name);
588 extern void set_editor_time_of_day();
591 extern int undo(void);
592 extern char mine_filename[128];
593 extern char undo_status[10][100];
596 int AttachSegmentNewAng(vms_angvec *pbh);
597 int RotateSegmentNew(vms_angvec *pbh);
598 int rotate_segment_new(vms_angvec *pbh);
600 //get & free vertices
602 void free_vert(int vert_num);
604 // The current robot type declared in eglobal.c
605 extern int Cur_robot_type;
608 extern int DisplayCurrentRobotType(void);
609 extern short Cur_object_index;
611 extern int render_3d_in_big_window;
612 extern void move_object_to_mouse_click(void);
614 //these are instances of canvases, pointed to by variables below
615 extern grs_canvas _canv_editor_game; //the game on the editor screen
617 //these are pointers to our canvases
618 extern grs_canvas *Canv_editor; //the editor screen
619 extern grs_canvas *Canv_editor_game; //the game on the editor screen
621 extern grs_canvas *canv_offscreen; //for off-screen rendering
622 extern grs_canvas *Pad_text_canvas; // Keypad text
624 //where the editor is looking
625 extern vms_vector Ed_view_target;
627 extern int gamestate_not_restored;
629 extern UI_WINDOW * EditorWindow;
631 extern int Large_view_index;
633 extern UI_GADGET_USERBOX * GameViewBox;
634 extern UI_GADGET_USERBOX * LargeViewBox;
635 extern UI_GADGET_USERBOX * GroupViewBox;
637 extern void med_point_2_vec(grs_canvas *canv,vms_vector *v,short sx,short sy);
639 //shutdown ui on the editor screen
640 void close_editor_screen(void);
643 extern int place_object(segment *segp, vms_vector *object_pos, int object_type);
646 extern void med_extract_up_vector_from_segment_side(segment *sp, int sidenum, vms_vector *vp);
647 extern void med_extract_right_vector_from_segment_side(segment *sp, int sidenum, vms_vector *vp);
648 extern void med_extract_forward_vector_from_segment_side(segment *sp, int sidenum, vms_vector *vp);
651 extern void draw_world_from_game(void);
654 extern void close_all_windows(void);
658 // Amount to stretch a texture map by.
659 // The two different ones are for the two dimensions of a texture map.
660 extern fix Stretch_scale_x, Stretch_scale_y;