Add book "Занимательное программирование"

1 files changed, 148 insertions, 0 deletions

diff --git a/Занимательное программирование/1/9_conway/unit1.pas b/Занимательное программирование/1/9_conway/unit1.pas
new file mode 100644
index 0000000..c96515d
--- /dev/null
+++ b/Занимательное программирование/1/9_conway/unit1.pas
@@ -0,0 +1,148 @@
+unit Unit1;
+
+{$mode objfpc}{$H+}
+
+interface
+
+uses
+  Classes, SysUtils, Forms, Controls, Graphics, Dialogs, ExtCtrls, StdCtrls;
+
+type
+
+  { TForm1 }
+
+  TForm1 = class(TForm)
+    StartStopBtn: TButton;
+    Screen: TPaintBox;
+    procedure ScreenPaint(Sender: TObject);
+    procedure StartStopBtnClick(Sender: TObject);
+  private
+    const FieldWidth = 30;
+      FieldHeight = 25;
+
+    var Field: array [0 .. FieldWidth + 1, 0 .. FieldHeight + 1] of Boolean;
+      Changes: array [0 .. FieldWidth + 1, 0 .. FieldHeight + 1] of Boolean;
+      Rx, Ry: Integer;
+  public
+
+  end;
+
+var
+  Form1: TForm1;
+  IsRunning: Boolean;
+
+implementation
+
+{$R *.lfm}
+
+{ TForm1 }
+
+procedure TForm1.StartStopBtnClick(Sender: TObject);
+  var x, y, offset: Integer;
+    s, i, j: Integer;
+    u, v: Integer;
+begin
+  if IsRunning then
+  begin
+    IsRunning := false;
+    StartStopBtn.Caption := 'Пуск';
+    Exit;
+  end;
+
+  StartStopBtn.Caption := 'Стоп';
+  IsRunning := true;
+
+  Rx := (Screen.Width div FieldWidth) div 2;
+  Ry := (Screen.Height div FieldHeight) div 2;
+
+  { Очистка поля }
+  for i := 0 to FieldWidth + 1 do
+    for j := 0 to FieldHeight + 1 do
+    begin
+      Field[i, j] := false;
+      Changes[i, j] := false;
+    end;
+
+  { Здесь внести строки, задающие конфигурацию инфузорий }
+  offset := 1;
+  Field[offset + 0, 10] := true;
+  Field[offset + 1, 10] := true;
+  Field[offset + 2, 9] := true;
+  Field[offset + 2, 11] := true;
+  Field[offset + 3, 10] := true;
+  Field[offset + 4, 10] := true;
+  Field[offset + 5, 10] := true;
+  Field[offset + 6, 10] := true;
+  Field[offset + 7, 9] := true;
+  Field[offset + 7, 11] := true;
+  Field[offset + 8, 10] := true;
+  Field[offset + 9, 10] := true;
+
+  while IsRunning do
+  begin
+      Screen.Invalidate;
+
+      for x := 1 to FieldWidth do
+        for y := 1 to FieldHeight do
+        begin
+          s := 0;
+          for i := -1 to 1 do
+            for j := -1 to 1 do
+            begin
+              if (x = 1) and (i = -1) then
+                u := FieldWidth - 1
+              else if (x = FieldWidth - 1) and (i = 1) then
+                u := 1
+              else
+                u := x;
+              if (y = 1) and (j = -1) then
+                v := FieldHeight - 1
+              else if (y = FieldHeight - 1) and (y = 1) then
+                v := 1
+              else
+                v := y;
+              s := s + Ord(Field[u + i][v + j]);
+            end;
+          s := s - Ord(Field[x][y]);
+
+          { Если произошло рождение или смерть }
+          if ((Field[x, y] = false) and (s = 3)) or
+            ((Field[x, y] = true) and ((s < 2) or (s > 3))) then
+            Changes[x, y] := true;
+        end;
+
+      { Внесение изменений }
+      for x := 1 to FieldWidth do
+        for y := 1 to FieldHeight do
+        begin
+          if Changes[x, y] then
+          begin
+            Field[x, y] := not Field[x, y]; { Меняем состояние на }
+            Changes[x, y] := false; { противоположное }
+          end;
+        end;
+
+      Sleep(100);
+      Application.ProcessMessages;
+      if Application.Terminated then
+        IsRunning := false;
+  end;
+end;
+
+procedure TForm1.ScreenPaint(Sender: TObject);
+  var i, j: Integer;
+begin
+  for i := 1 to FieldWidth do
+    for j := 1 to FieldHeight do
+    begin
+      if Field[i, j] then
+        Screen.Canvas.Pen.Color := clBlue
+      else
+        Screen.Canvas.Pen.Color := clBtnFace;
+      Screen.Canvas.Ellipse((2 * i - 1) * Rx - Rx, (2 * j - 1) * Ry - Ry,
+        (2 * i - 1) * Rx + Rx, (2 * j - 1) * Ry + Ry);
+    end;
+end;
+
+end.
+