program gen;
uses graphabc;
var x,y,d,k,k1,ch:integer;
    camX,camY,koef:integer;
    dx:array[1..100,1..100] of string;
    pX,pY:integer;
    R,G,B,rad:integer;
    dk:real;
    
procedure MouseDown(x,y,mb: integer);begin;
  if mb=1 then begin 
   // camX:=round(camX/2);camY:=round(camY/2);
    koef:=round(koef/2);
    dk:=dk*2;
  end;
  if mb=2 then begin 
   // camX:=camX*2;camY:=camY*2;
    koef:=koef*2;
    dk:=dk/2;
  end;
end;

procedure gener;begin;
  ch:=0;
  x:=50;
  y:=50;
  while ch<500 do begin
    k:=1+random(4);
    if k1=k then k:=1+random(4);
    if k1=3 then k:=2;
    if k1=4 then k:=1;
    d:=1+random(7);
    for var i:=0 to d-1 do begin
      if k=1 then x:=x+1;
      if k=2 then y:=y-1;
      if k=3 then x:=x-1;
      if k=4 then y:=y+1;
      if x>1 then begin
        if x<100 then begin 
          if y>1 then begin
            if y<100 then begin
              dx[x,y]:='floor';
      end;end;end;end;
    end;
    if ch=0 then begin 
      pX:=x;pY:=y;
    end;
    ch:=ch+1;k1:=k;
  end;
      writeln('info:gen is ok');
end;

procedure init;begin;
  Window.Title:='amazing rougelike';
  Window.Height:=800;
  Window.Width:=800;
  Window.IsFixedSize:=true;
  Window.CenterOnScreen;
  for var i:=1 to 100 do begin
    for var j:=1 to 100 do begin
      dx[i,j]:='wall';
    end;
  end;
  koef:=32;dk:=12.5;
  writeln('info:init is ok');
end;

procedure keydown(key:integer);begin;
  case key of
    VK_Left: begin;
      if dx[Px-1,Py]<>'wall' then pX:=pX-1;
    end;
    VK_Right: begin;
      if dx[Px+1,Py]<>'wall' then pX:=pX+1;
    end;
    VK_Up: begin;
      if dx[Px,Py-1]<>'wall' then pY:=pY-1;
    end;
    VK_Down: begin;
      if dx[Px,Py+1]<>'wall' then pY:=pY+1;
    end;
    VK_Enter: begin; init; gener; end;
  end;
end;

procedure mapping;begin;
  camX:=round((pX-dk)*koef);camY:=round((pY-dk)*koef);
  Window.Clear(clBlack);
  var dr:boolean;
  var ss:integer;
  ss:=0;
      var a:real;
      var gx,gy,n:integer;
      var dnd:boolean;
      dnd:=false;n:=6;
          r:=0;g:=0;b:=0;
          //rad:=round(sqrt(((i-px)*(i-px))+((j-py)*(j-py))));
          //if rad<6 then begin
          for var l:=1 to 359 do begin
           for var rg:=1 to n do begin
            a:=l*(pi/180);
            gx:=round((cos(a)*rg)+px);gy:=round((sin(a)*rg)+py);
            if dx[gx,gy]='wall' then begin dnd:=true;n:=rg;end;
            if dx[gx,gy]='floor' then begin
             if dnd=false then begin
              r:=254-rg*35;
              g:=254-rg*35;
              b:=254-rg*35;
              setbrushcolor(rgb(r,g,b));setpencolor(rgb(r-20,g-20,b-20));
              rectangle(((gx-1)*koef)-camX,((gy-1)*koef)-camY,((gx)*koef)-camX,((gy)*koef)-camY);
              ss:=ss+1;
             end;
            end;
           end;
           dnd:=false;n:=6;
           end;
          
       
        
        setbrushcolor(clRandom);setpencolor(clRandom);
        rectangle(((pX-1)*koef)-camX,((pY-1)*koef)-camY,((pX)*koef)-camX,((pY)*koef)-camY);
        


  Window.Title:=inttostr(ss);
end;

begin
  init;
  gener;
  writeln('info:wait for...');
  for var i:=5 downto 1 do begin
    writeln('              for ',i); sleep(999);
  end;
  writeln('info:drawing');writeln('info:simulating');sleep(150);
  while 0=0 do begin
    OnKeyDown := KeyDown;
    OnMouseDown := MouseDown;
    LockDrawing;
    mapping;
    Redraw;sleep(1);
  end;
end.

//1-right/2-up/3-left/4-down