hedgewars/uAILandMarks.pas
author nemo
Tue, 21 Aug 2018 15:11:28 -0400
branch0.9.24
changeset 13687 f60b3998ba56
parent 10017 de822cd3df3a
permissions -rw-r--r--
only-stats should never create visual gears. and lua should never rely on visual gears being created. critical is just to help ensure ones important to gameplay don't get lost in fast-forward

unit uAILandMarks;

interface
const
    markWalkedHere = $01;
    markHJumped    = $02;
    markLJumped    = $04;

procedure addMark(X, Y: LongInt; mark: byte);
function  checkMark(X, Y: LongInt; mark: byte) : boolean;
procedure clearAllMarks;
procedure clearMarks(mark: byte);
procedure setAILandMarks;

procedure initModule;
procedure freeModule;

implementation
uses uVariables;

const gr = 2;

var marks: array of array of byte;
    WIDTH, HEIGHT: Longword;

procedure addMark(X, Y: LongInt; mark: byte);
begin
    if((X and LAND_WIDTH_MASK) = 0) and ((Y and LAND_HEIGHT_MASK) = 0) then
        begin
        X:= X shr gr;
        Y:= Y shr gr;
        marks[Y, X]:= marks[Y, X] or mark
        end
end;

function  checkMark(X, Y: LongInt; mark: byte) : boolean;
begin
    checkMark:= ((X and LAND_WIDTH_MASK) = 0)
        and ((Y and LAND_HEIGHT_MASK) = 0)
        and ((marks[Y shr gr, X shr gr] and mark) <> 0)
end;

procedure clearAllMarks;
var
    Y, X: Longword;
begin
    for Y:= 0 to Pred(HEIGHT) do
        for X:= 0 to Pred(WIDTH) do
            marks[Y, X]:= 0
end;

procedure clearMarks(mark: byte);
var
    Y, X: Longword;
begin
    for Y:= 0 to Pred(HEIGHT) do
        for X:= 0 to Pred(WIDTH) do
            marks[Y, X]:= marks[Y, X] and (not mark)
end;

procedure setAILandMarks;
begin
    WIDTH:= LAND_WIDTH shr gr;
    HEIGHT:= LAND_HEIGHT shr gr;

    SetLength(marks, HEIGHT, WIDTH);
end;

procedure initModule;
begin
end;

procedure freeModule;
begin
    SetLength(marks, 0, 0);
end;

end.