1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
|
unit tetree;
interface
uses figure;
const
MaxLine = CupHeight div 2;
MaxSquares = 10;
type
NodePtr = ^Node;
Node = record
square: SquareItemPtr;
left, right: NodePtr;
end;
LineInfo = record
NodeCount: byte;
root: NodePtr;
end;
WayFinding = array [1..MaxLine] of LineInfo;
function SearchFillViaShape(arr: WayFinding; shape: ShapeList): integer;
function SearchOtherFill(arr: WayFinding; pos: integer): integer;
procedure InitMassive(var arr: WayFinding);
procedure LineInspection(var shape, ChangedShape: ShapeList;
var arr: WayFinding; var IsObstacle: boolean);
procedure AddInTree(var shape: ShapeList; var arr: WayFinding);
procedure DropLine(var arr: WayFinding; pos: integer; CurBorders: borders);
procedure ClearSquaresAndTree(var root: NodePtr);
procedure ClearLines(pos: integer);
implementation
uses crt;
type
TreeNodePos = ^NodePtr;
action = (print, ChValue);
function SearchOtherFill(arr: WayFinding; pos: integer): integer;
var
i, LowerLineIdx: integer;
begin
LowerLineIdx := 0;
for i := 1 to pos do
if (arr[i].NodeCount = MaxSquares) and (i > LowerLineIdx) then
LowerLineIdx := i;
SearchOtherFill := LowerLineIdx
end;
function SearchFillViaShape(arr: WayFinding; shape: ShapeList): integer;
type
BottomFillLineType = record
Idx, value: integer;
end;
var
square: SquareItemPtr;
BottomFillLine: BottomFillLineType;
IdxArr: integer;
begin
BottomFillLine.Idx := 0;
BottomFillLine.value := 0;
square := shape.first;
while square <> nil do
begin
IdxArr := (square^.y - 1) div 2 + 1;
if (IdxArr >= 1) and (IdxArr <= MaxLine) then
begin
if (arr[IdxArr].NodeCount = MaxSquares) and
(square^.y > BottomFillLine.value) then
begin
BottomFillLine.Idx := IdxArr;
BottomFillLine.value := square^.y
end
end;
square := square^.next
end;
SearchFillViaShape := BottomFillLine.Idx
end;
procedure ClearSquaresAndTree(var root: NodePtr);
begin
if root <> nil then
begin
ClearSquaresAndTree(root^.left);
ClearSquaresAndTree(root^.right);
{delete squares}
if root^.square <> nil then
begin
dispose(root^.square);
root^.square := nil
end;
{delete tree}
dispose(root);
root := nil
end
end;
procedure Traversal(var root: NodePtr; select: action; CurBorders: borders);
var
i, j: integer;
begin
if root = nil then
exit;
Traversal(root^.left, select, CurBorders);
case select of
print: begin
for i := 0 to HeightSquare-1 do
begin
for j := 0 to WidthSquare-1 do
begin
if not IsAboveTop(root^.square, CurBorders) then
begin
GotoXY(root^.square^.x+j, root^.square^.y+i);
TextColor(root^.square^.color);
write('*')
end
end;
writeln
end
end;
ChValue: root^.square^.y := root^.square^.y + HeightSquare
end;
Traversal(root^.right, select, CurBorders)
end;
procedure ClearLines(pos: integer);
const
LeftBegin = 2;
var
i, j: integer;
begin
for i := 1 to pos * HeightSquare do
begin
GotoXY(LeftBegin, i);
for j := 1 to CupWidth-1 do
write(' ')
end
end;
procedure LineShifting(var arr: WayFinding; BeginPos, EndPos: integer;
CurBorders: borders);
begin
if BeginPos = EndPos then
begin
ClearSquaresAndTree(arr[EndPos].root);
arr[EndPos] := arr[EndPos-1];
Traversal(arr[EndPos].root, ChValue, CurBorders);
exit
end;
LineShifting(arr, BeginPos+1, EndPos, CurBorders);
if BeginPos-1 < BeginCup then
exit;
arr[BeginPos] := arr[BeginPos-1];
Traversal(arr[BeginPos].root, ChValue, CurBorders)
end;
procedure DropLine(var arr: WayFinding; pos: integer; CurBorders: borders);
var
i: integer;
begin
ClearLines(pos);
i := 1;
while arr[i].NodeCount = 0 do
i := i + 1;
if (i + 1 <> pos) and (i <= MaxLine) then
LineShifting(arr, i + 1, pos, CurBorders)
else if i + 1 = pos then
LineShifting(arr, pos, pos, CurBorders);
{if i > pos, clear only last line}
if (i >= 1) and (i <= MaxLine) then
begin
arr[i].root := nil;
arr[i].NodeCount := 0
end;
for i := i + 1 to pos do
Traversal(arr[i].root, print, CurBorders)
end;
procedure InitMassive(var arr: WayFinding);
var
i: integer;
begin
for i := 1 to MaxLine do
begin
arr[i].NodeCount := 0;
arr[i].root := nil
end
end;
function SearchTree(var p: NodePtr; val: integer): TreeNodePos;
begin
if (p = nil) or (p^.square^.x= val) then
begin
{$IFDEF DEBUG}
GotoXY(50, 1);
if (p <> nil) and (p^.square^.x = val) then
write('DEBUG: value is found');
{$ENDIF}
SearchTree := @p
end
else if val < p^.square^.x then
SearchTree := SearchTree(p^.left, val)
else
SearchTree := SearchTree(p^.right, val)
end;
procedure AddInTree(var shape: ShapeList; var arr: WayFinding);
var
square: SquareItemPtr;
PosNode: TreeNodePos;
IdxArr: integer;
begin
square := shape.first;
while square <> nil do
begin
IdxArr := (square^.y-1) div 2+1;
PosNode := SearchTree(arr[IdxArr].root, square^.x);
if PosNode^ = nil then
begin
new(PosNode^);
PosNode^^.square := square;
PosNode^^.left := nil;
PosNode^^.right := nil;
arr[IdxArr].NodeCount := arr[IdxArr].NodeCount + 1
end;
square := square^.next
end
end;
procedure CheckTurnThroughSquare(var shape: ShapeList; arr: WayFinding);
const
MaxLength = 15;
var
IdxArr, i, j, distance: integer;
LeftEdge, RightEdge, UpEdge, DownEdge: EdgeType;
begin
InitEdges(LeftEdge, RightEdge, UpEdge, DownEdge, shape);
{left}
if (LeftEdge.x <> 0) and (LeftEdge.y <> 0) then
begin
distance := (shape.cx - LeftEdge.x) div 3;
if distance >= 1 then
begin
for i := 0 to distance-1 do
begin
for j := 1 to distance do
begin
IdxArr := ((LeftEdge.y - j * HeightSquare) - 1) div 2 + 1;
if (IdxArr >= 1) and (IdxArr <= MaxLength) then
begin
if SearchTree(arr[IdxArr].root,
LeftEdge.x + i * WidthSquare)^ <> nil then
begin
shape.CanTurn := false;
exit
end
end
end
end
end
end;
{right}
if (RightEdge.x <> 0) and (RightEdge.y <> 0) then
begin
distance := (RightEdge.x - shape.cx) div 3;
if distance >= 1 then
begin
for i := 0 to distance-1 do
begin
for j := 1 to distance do
begin
IdxArr := ((RightEdge.y + j * HeightSquare) - 1) div 2 + 1;
if (IdxArr >= 1) and (IdxArr <= MaxLength) then
begin
if SearchTree(arr[IdxArr].root,
RightEdge.x - i*WidthSquare)^ <> nil then
begin
shape.CanTurn := false;
exit
end
end
end
end
end
end;
{up}
if (UpEdge.x <> 0) and (UpEdge.y <> 0) then
begin
distance := (shape.cy - UpEdge.y) div 2;
if distance >= 1 then
begin
for i := 0 to distance-1 do
begin
for j := 1 to distance do
begin
IdxArr := ((UpEdge.y + i * HeightSquare) - 1) div 2 + 1;
if (IdxArr >= 1) and (IdxArr <= MaxLength) then
begin
if SearchTree(arr[IdxArr].root,
UpEdge.x + j * WidthSquare)^ <> nil then
begin
shape.CanTurn := false;
exit
end
end
end
end
end
end;
{down}
if (DownEdge.x <> 0) and (DownEdge.y <> 0) then
begin
distance := (DownEdge.y - shape.cy) div 2;
if distance >= 1 then
begin
for i := 0 to distance-1 do
begin
for j := 1 to distance do
begin
IdxArr := ((DownEdge.y - i * HeightSquare) - 1) div 2 + 1;
if (IdxArr >= 1) and (IdxArr <= MaxLength) then
begin
if SearchTree(arr[IdxArr].root,
DownEdge.x - j * WidthSquare)^ <> nil then
begin
shape.CanTurn := false;
exit
end
end
end
end
end
end;
end;
procedure LineInspection(var shape, ChangedShape: ShapeList;
var arr: WayFinding; var IsObstacle: boolean);
var
square: SquareItemPtr;
IdxArr: integer;
begin
IsObstacle := false;
square := ChangedShape.first;
while square <> nil do
begin
if square^.y > 0 then
begin
IdxArr := (square^.y-1) div 2+1;
if SearchTree(arr[IdxArr].root, square^.x)^ <> nil then
begin
IsObstacle := true;
break
end
end;
square := square^.next
end;
if not shape.IsSquare then
CheckTurnThroughSquare(shape, arr)
end;
end.
|