hedgewars/uAILandMarks.pas
author nemo
Thu, 18 Oct 2012 14:04:24 -0400
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child 7787 67c96b9c179c
permissions -rw-r--r--
damn nots
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unit uAILandMarks;
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interface
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const markWasHere = $01;
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procedure addMark(X, Y: LongInt; mark: byte);
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function  checkMark(X, Y: LongInt; mark: byte) : boolean;
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procedure clearAllMarks;
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procedure clearMarks(mark: byte);
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procedure initModule;
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procedure freeModule;
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implementation
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uses uVariables;
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const gr = 2;
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var marks: array of array of byte;
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    WIDTH, HEIGHT: Longword;
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procedure addMark(X, Y: LongInt; mark: byte);
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begin
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    if((X and LAND_WIDTH_MASK) = 0) and ((Y and LAND_HEIGHT_MASK) = 0) then
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        begin
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        X:= X shr gr;
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        Y:= Y shr gr;
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        marks[Y, X]:= marks[Y, X] or mark
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        end
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end;
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function  checkMark(X, Y: LongInt; mark: byte) : boolean;
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begin
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    checkMark:= ((X and LAND_WIDTH_MASK) = 0) 
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        and ((Y and LAND_HEIGHT_MASK) = 0) 
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        and ((marks[Y shr gr, X shr gr] and mark) <> 0)
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end;
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procedure clearAllMarks;
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var 
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    Y, X: Longword;
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begin
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    for Y:= 0 to Pred(HEIGHT) do
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        for X:= 0 to Pred(WIDTH) do
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            marks[Y, X]:= 0
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end;
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procedure clearMarks(mark: byte);
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var 
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    Y, X: Longword;
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begin
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    for Y:= 0 to Pred(HEIGHT) do
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        for X:= 0 to Pred(WIDTH) do
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            marks[Y, X]:= marks[Y, X] and (not mark)
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end;
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procedure initModule;
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begin
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    WIDTH:= LAND_WIDTH shr gr;
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    HEIGHT:= LAND_HEIGHT shr gr;
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    SetLength(marks, HEIGHT, WIDTH);
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end;
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procedure freeModule;
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begin
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    SetLength(marks, 0, 0);
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end;
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end.