Add book "Занимательное программирование"
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214
Занимательное программирование/1/8_5_life/unit1.pas
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214
Занимательное программирование/1/8_5_life/unit1.pas
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unit Unit1;
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{$mode objfpc}{$H+}
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interface
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uses
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Classes, SysUtils, Forms, Controls, Graphics, Dialogs, StdCtrls, ExtCtrls,
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Math;
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const FieldWidth = 30; { Ширина и }
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FieldHeight = 25; { высота поля }
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type
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TField = array [0..FieldWidth + 1, 0..FieldHeight + 1] of Integer;
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{ TForm1 }
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TForm1 = class(TForm)
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Screen: TPaintBox;
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StartStopBtn: TButton;
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procedure ScreenPaint(Sender: TObject);
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procedure StartStopBtnClick(Sender: TObject);
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private
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var Rx, Ry: Integer; { Ширина, высота клекти }
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Field: TField;
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x, y: Integer;
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public
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end;
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var
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Form1: TForm1;
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IsRunning: Boolean;
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implementation
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{$R *.lfm}
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{ TForm1 }
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procedure TForm1.StartStopBtnClick(Sender: TObject);
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var i, j: Integer;
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protoplasmCount, infusoria: Integer;
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direction, positionX, positionY, energy: Integer;
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begin
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if IsRunning then
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begin
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IsRunning := false;
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StartStopBtn.Caption := 'Пуск';
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Exit;
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end;
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StartStopBtn.Caption := 'Стоп';
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IsRunning := true;
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Rx := (Screen.Width div FieldWidth) div 2; { Определяем размеры клетки }
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Ry := (Screen.Height div FieldHeight) div 2;
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Randomize;
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for i := 0 to FieldWidth + 1 do { Очистка поля }
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for j := 0 to FieldHeight + 1 do
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Field[i, j] := 0;
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while IsRunning do { Основной цикл }
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begin
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x := RandomRange(1, FieldWidth); { Выбираем случайную клекту }
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y := RandomRange(1, FieldHeight);
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{ Подсчитываем соседей }
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infusoria := 0;
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protoplasmCount := 0;
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for i := -1 to 1 do
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for j := -1 to 1 do
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begin
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if Field[x + i][y + j] = -2 then
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begin
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Inc(protoplasmCount);
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end
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else if Field[x + i][y + j] = -1 then
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begin
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Inc(infusoria);
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end;
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end;
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if Field[x][y] = -1 then
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Dec(infusoria);
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if (Field[x, y] = 0) and (infusoria > 2) then { Создаем новую инфузорию }
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begin
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Field[x, y] := -1;
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end
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{ Удаляем инфузорию }
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else if (Field[x, y] = -1) and ((infusoria < 3) or (infusoria > 4)) then
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begin
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Field[x, y] := 0;
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end
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{ Создаем инфузория, если достаточно протоплазмы }
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else if ((Field[x, y] = 0) or (Field[x, y] = -2)) and
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(protoplasmCount > 6) then
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begin
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for i := -1 to 1 do
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for j := -1 to 1 do
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if Field[x + i, y + j] = -2 then
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Field[x + i, y + j] := 0;
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Field[x, y] := -1;
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end
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{ Создаем протоплазму, если клетка пустая }
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else if Field[x, y] = 0 then
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begin
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Field[x, y] := -2;
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end
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{ Животное двигается }
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else if Field[x, y] > 0 then
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begin
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direction := Random(4);
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energy := Field[x, y];
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case direction of
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0:
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begin
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positionX := x - 1;
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positionY := y;
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end;
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1:
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begin
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positionX := x + 1;
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positionY := y;
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end;
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2:
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begin
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positionX := x;
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positionY := y - 1;
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end;
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3:
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begin
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positionX := x;
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positionY := y + 1;
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end;
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end;
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if Field[positionX, positionY] = 0 then
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Dec(energy)
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else if Field[positionX, positionY] = -1 then
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Inc(energy)
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else if Field[positionX, positionY] > 0 then
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energy := energy + Field[positionX, positionY];
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Field[x, y] := 0;
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if energy > 0 then
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Field[positionX, positionY] := energy
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end;
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{ Создаем животных }
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for i := 1 to FieldWidth do
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begin
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for j := 1 to FieldHeight do
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begin
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if (Field[i - 1, j] = -1) and
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(Field[i, j] = -1) and (Field[i + 1, j] = -1) then
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begin
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Field[i - 1, j] := 0;
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Field[i, j] := 5;
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Field[i + 1, j] := 0;
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end
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else if (Field[i, j - 1] = -1) and
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(Field[i, j] = -1) and (Field[i, j + 1] = -1) then
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begin
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Field[i, j - 1] := 0;
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Field[i, j] := 5;
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Field[i, j + 1] := 0;
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end;
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end;
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end;
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Screen.Invalidate;
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Sleep(5);
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Application.ProcessMessages;
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if Application.Terminated then Exit;
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end
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end;
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procedure TForm1.ScreenPaint(Sender: TObject);
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var i, j: Integer;
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begin
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Screen.Canvas.Pen.Color := clBlue;
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for i := 1 to FieldWidth do
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begin
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for j := 1 to FieldHeight do
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begin
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if Field[i][j] = -1 then
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begin
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Screen.Canvas.Pen.Color := clBlue;
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Screen.Canvas.Ellipse((2 * i - 1) * Rx - Rx, (2 * j - 1) * Ry - Ry,
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(2 * i - 1) * Rx + Rx, (2 * j -1) * Ry + Ry);
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end
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else if Field[i][j] = -2 then
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begin
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Screen.Canvas.Pen.Color := clGreen;
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Screen.Canvas.Ellipse((2 * i - 1) * Rx - Rx, (2 * j - 1) * Ry - Ry,
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(2 * i - 1) * Rx + Rx, (2 * j -1) * Ry + Ry);
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end
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else if Field[i][j] > 0 then
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begin
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Screen.Canvas.Pen.Color := clYellow;
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Screen.Canvas.Ellipse((2 * i - 1) * Rx - Rx, (2 * j - 1) * Ry - Ry,
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(2 * i - 1) * Rx + Rx, (2 * j -1) * Ry + Ry);
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end;
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end;
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end;
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end;
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end.
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