can compile engine as library on linux but not run the executable (automatically), most likely breaking other platforms (wrt engine-as-library)
(*
* Hedgewars, a free turn based strategy game
* Copyright (c) 2004-2012 Andrey Korotaev <unC0Rr@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*)
{$INCLUDE "options.inc"}
unit uGearsHandlers;
interface
uses uTypes;
procedure cakeStep(Gear: PGear);
implementation
uses SDLh, uFloat, uCollisions;
const dirs: array[0..3] of TPoint = ((X: 0; Y: -1), (X: 1; Y: 0),(X: 0; Y: 1),(X: -1; Y: 0));
procedure PrevAngle(Gear: PGear; dA: LongInt); inline;
begin
Gear^.Angle := (LongInt(Gear^.Angle) - dA) and 3
end;
procedure NextAngle(Gear: PGear; dA: LongInt); inline;
begin
Gear^.Angle := (LongInt(Gear^.Angle) + dA) and 3
end;
procedure cakeStep(Gear: PGear);
var
xx, yy, xxn, yyn: LongInt;
dA: LongInt;
begin
dA := hwSign(Gear^.dX);
xx := dirs[Gear^.Angle].x;
yy := dirs[Gear^.Angle].y;
xxn := dirs[(LongInt(Gear^.Angle) + dA) and 3].x;
yyn := dirs[(LongInt(Gear^.Angle) + dA) and 3].y;
if (xx = 0) then
if TestCollisionYwithGear(Gear, yy) <> 0 then
PrevAngle(Gear, dA)
else
begin
Gear^.Tag := 0;
Gear^.Y := Gear^.Y + int2hwFloat(yy);
if not TestCollisionXwithGear(Gear, xxn) then
begin
Gear^.X := Gear^.X + int2hwFloat(xxn);
NextAngle(Gear, dA)
end;
end;
if (yy = 0) then
if TestCollisionXwithGear(Gear, xx) then
PrevAngle(Gear, dA)
else
begin
Gear^.Tag := 0;
Gear^.X := Gear^.X + int2hwFloat(xx);
if TestCollisionYwithGear(Gear, yyn) = 0 then
begin
Gear^.Y := Gear^.Y + int2hwFloat(yyn);
NextAngle(Gear, dA)
end;
end;
end;
end.