hedgewars/uGears.pas
changeset 4 bcbd7adb4e4b
parent 1 30f2d1037d5d
child 6 9c1f00e7b43e
--- a/hedgewars/uGears.pas	Mon Aug 22 21:38:06 2005 +0000
+++ b/hedgewars/uGears.pas	Tue Aug 23 16:17:53 2005 +0000
@@ -1,508 +1,508 @@
-(*
- * Hedgewars, a worms-like game
- * Copyright (c) 2004, 2005 Andrey Korotaev <unC0Rr@gmail.com>
- *
- * Distributed under the terms of the BSD-modified licence:
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * with the Software without restriction, including without limitation the
- * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
- * sell copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * 1. Redistributions of source code must retain the above copyright notice,
- *    this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote products
- *    derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
- * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
- * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
- * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
- * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *)
-
-unit uGears;
-interface
-uses SDLh, uConsts;
-{$INCLUDE options.inc}
-const AllInactive: boolean = false;
-
-type PGear = ^TGear;
-     TGearStepProcedure = procedure (Gear: PGear);
-     TGear = record
-             NextGear, PrevGear: PGear;
-             Active: Boolean;
-             State : Cardinal;
-             X : Real;
-             Y : Real;
-             dX: Real;
-             dY: Real;
-             Kind  : TGearType;
-             doStep: TGearStepProcedure;
-             HalfWidth, HalfHeight: integer;
-             Angle, Power : Cardinal;
-             DirAngle: real;
-             Timer : LongWord;
-             Elasticity: Real;
-             Friction  : Real;
-             Message : Longword;
-             Hedgehog: pointer;
-             Health, Damage: LongWord;
-             CollIndex: Longword;
-             Tag: Longword;
-             end;
-
-function AddGear(X, Y: integer; Kind: TGearType; State: Cardinal; const dX: real=0.0; dY: real=0.0; Timer: LongWord=0): PGear;
-procedure ProcessGears;
-procedure SetAllToActive;
-procedure SetAllHHToActive;
-procedure DrawGears(Surface: PSDL_Surface);
-procedure FreeGearsList;
-procedure InitGears;
-procedure AssignHHCoords;
-
-var CurAmmoGear: PGear = nil;
-
-implementation
-uses uWorld, uMisc, uStore, uConsole, uSound, uTeams, uRandom, uCollisions, uLand;
-var GearsList: PGear = nil;
-    RopePoints: record
-                Count: Longword;
-                HookAngle: integer;
-                ar: array[0..300] of record
-                                  X, Y: real;
-                                  dLen: real;
-                                  b: boolean;
-                                  end;
-                 end;
-
-procedure DeleteGear(Gear: PGear); forward;
-procedure doMakeExplosion(X, Y, Radius: integer; Mask: LongWord); forward;
-
-{$INCLUDE GSHandlers.inc}
-{$INCLUDE HHHandlers.inc}
-
-const doStepHandlers: array[TGearType] of TGearStepProcedure = (
-                                                               doStepCloud,
-                                                               doStepBomb,
-                                                               doStepHedgehog,
-                                                               doStepGrenade,
-                                                               doStepHealthTag,
-                                                               doStepGrave,
-                                                               doStepUFO,
-                                                               doStepShotgunShot,
-                                                               doStepActionTimer,
-                                                               doStepPickHammer,
-                                                               doStepRope,
-                                                               doStepSmokeTrace
-                                                               );
-
-function AddGear(X, Y: integer; Kind: TGearType; State: Cardinal; const dX: real=0.0; dY: real=0.0; Timer: LongWord=0): PGear;
-begin
-{$IFDEF DEBUGFILE}AddFileLog('AddGear: ('+inttostr(x)+','+inttostr(y)+')');{$ENDIF}
-New(Result);
-{$IFDEF DEBUGFILE}AddFileLog('AddGear: handle = '+inttostr(integer(Result)));{$ENDIF}
-FillChar(Result^, sizeof(TGear), 0);
-Result.X:= X;
-Result.Y:= Y;
-Result.Kind := Kind;
-Result.State:= State;
-Result.Active:= true;
-Result.dX:= dX;
-Result.dY:= dY;
-Result.doStep:= doStepHandlers[Kind];
-Result.CollIndex:= High(Longword);
-if CurrentTeam <> nil then
-   Result.Hedgehog:= @CurrentTeam.Hedgehogs[CurrentTeam.CurrHedgehog];
-case Kind of
-   gtAmmo_Bomb: begin
-                Result.HalfWidth:= 4;
-                Result.HalfHeight:= 4;
-                Result.Elasticity:= 0.6;
-                Result.Friction:= 0.995;
-                Result.Timer:= Timer
-                end;
-    gtHedgehog: begin
-                Result.HalfWidth:= 6;
-                Result.HalfHeight:= cHHHalfHeight;
-                Result.Elasticity:= 0.002;
-                Result.Friction:= 0.999;
-                end;
-gtAmmo_Grenade: begin
-                Result.HalfWidth:= 4;
-                Result.HalfHeight:= 4;
-                end;
-   gtHealthTag: begin
-                Result.Timer:= 1500;
-                end;
-       gtGrave: begin
-                Result.HalfWidth:= 10;
-                Result.HalfHeight:= 10;
-                Result.Elasticity:= 0.6;
-                end;
-         gtUFO: begin
-                Result.HalfWidth:= 5;
-                Result.HalfHeight:= 2;
-                Result.Timer:= 500;
-                Result.Elasticity:= 0.9
-                end;
- gtShotgunShot: begin
-                Result.Timer:= 900;
-                Result.HalfWidth:= 2;
-                Result.HalfHeight:= 2
-                end;
- gtActionTimer: begin
-                Result.Timer:= Timer
-                end;
-  gtPickHammer: begin
-                Result.HalfWidth:= 10;
-                Result.HalfHeight:= 2;
-                Result.Timer:= 4000
-                end;
-  gtSmokeTrace: begin
-                Result.Tag:= 8
-                end;
-        gtRope: begin
-                Result.HalfWidth:= 3;
-                Result.HalfHeight:= 3;
-                Result.Friction:= 500;
-                RopePoints.Count:= 0;
-                end;
-     end;
-if GearsList = nil then GearsList:= Result
-                   else begin
-                   GearsList.PrevGear:= Result;
-                   Result.NextGear:= GearsList;
-                   GearsList:= Result
-                   end
-end;
-
-procedure DeleteGear(Gear: PGear);
-begin
-if Gear.CollIndex < High(Longword) then DeleteCR(Gear);
-if Gear.Kind = gtHedgehog then
-   if CurAmmoGear <> nil then
-      begin
-      {$IFDEF DEBUGFILE}AddFileLog('DeleteGear: Sending gm_Destroy, hh handle = '+inttostr(integer(Gear)));{$ENDIF}
-      Gear.Message:= gm_Destroy;
-      CurAmmoGear.Message:= gm_Destroy;
-      exit
-      end else PHedgehog(Gear.Hedgehog).Gear:= nil;
-if CurAmmoGear = Gear then
-   CurAmmoGear:= nil;
-if FollowGear = Gear then FollowGear:= nil;
-{$IFDEF DEBUGFILE}AddFileLog('DeleteGear: handle = '+inttostr(integer(Gear)));{$ENDIF}
-if Gear.NextGear <> nil then Gear.NextGear.PrevGear:= Gear.PrevGear;
-if Gear.PrevGear <> nil then Gear.PrevGear.NextGear:= Gear.NextGear
-                        else begin
-                        GearsList:= Gear^.NextGear;
-                        if GearsList <> nil then GearsList.PrevGear:= nil
-                        end;
-Dispose(Gear)
-end;
-
-function CheckNoDamage: boolean; // returns TRUE in case of no damaged hhs
-var Gear: PGear;
-begin
-Result:= true;
-Gear:= GearsList;
-while Gear <> nil do
-      begin
-      if Gear.Kind = gtHedgehog then
-         if Gear.Damage <> 0 then
-            begin
-            Result:= false;
-            if Gear.Health < Gear.Damage then Gear.Health:= 0
-                                         else dec(Gear.Health, Gear.Damage);
-            AddGear(Round(Gear.X), Round(Gear.Y) - 32, gtHealthTag, Gear.Damage).Hedgehog:= Gear.Hedgehog;
-            RenderHealth(PHedgehog(Gear.Hedgehog)^);
-            
-            Gear.Damage:= 0
-            end;
-      Gear:= Gear.NextGear
-      end;
-end;
-
-procedure ProcessGears;
-const delay: integer = cInactDelay;
-var Gear, t: PGear;
-{$IFDEF COUNTTICKS}
-    tickcntA, tickcntB: LongWord;
-const cntSecTicks: LongWord = 0;
-{$ENDIF}
-begin
-{$IFDEF COUNTTICKS}
-asm
-        push    eax
-        push    edx
-        rdtsc
-        mov     tickcntA, eax
-        mov     tickcntB, edx
-        pop     edx
-        pop     eax
-end;
-{$ENDIF}
-AllInactive:= true;
-t:= GearsList;
-while t<>nil do
-      begin
-      Gear:= t;
-      t:= Gear.NextGear;
-      if Gear.Active then Gear.doStep(Gear);
-      end;
-if AllInactive then
-   if (delay > 0)and not isInMultiShoot then
-      begin
-      if delay = cInactDelay then SetAllToActive;
-      dec(delay)
-      end
-   else begin
-   delay:= cInactDelay;
-   if CheckNoDamage then
-      if isInMultiShoot then isInMultiShoot:= false
-                        else ParseCommand('/nextturn');
-   end;
-if TurnTimeLeft > 0 then
-   if CurrentTeam <> nil then
-      if CurrentTeam.Hedgehogs[CurrentTeam.CurrHedgehog].Gear <> nil then
-         if ((CurrentTeam.Hedgehogs[CurrentTeam.CurrHedgehog].Gear.State and gstAttacking) = 0)
-            and not isInMultiShoot then dec(TurnTimeLeft);
-inc(GameTicks);
-{$IFDEF COUNTTICKS}
-asm
-        push    eax
-        push    edx
-        rdtsc
-        sub     eax, [tickcntA]
-        sbb     edx, [tickcntB]
-        add     [cntSecTicks], eax
-        pop     edx
-        pop     eax
-end;
-if (GameTicks and 1023) = 0 then
-   begin
-   cntTicks:= cntSecTicks shr 10;
-   {$IFDEF DEBUGFILE}
-   AddFileLog('<' + inttostr(cntTicks) + '>x1024 ticks');
-   {$ENDIF}
-   cntSecTicks:= 0
-   end;
-{$ENDIF}
-end;
-
-procedure SetAllToActive;
-var t: PGear;
-begin
-AllInactive:= false;
-t:= GearsList;
-while t<>nil do
-      begin
-      t.Active:= true;
-      t:= t.NextGear
-      end
-end;
-
-procedure SetAllHHToActive;
-var t: PGear;
-begin
-AllInactive:= false;
-t:= GearsList;
-while t<>nil do
-      begin
-      if t.Kind = gtHedgehog then t.Active:= true;
-      t:= t.NextGear
-      end
-end;
-
-procedure DrawGears(Surface: PSDL_Surface);
-var Gear: PGear;
-    i: Longword;
-
-    procedure DrawRopeLine(X1, Y1, X2, Y2: integer);
-    var i: integer;
-        t, k: real;
-        r: TSDL_Rect;
-    begin
-    if abs(X1 - X2) > abs(Y1 - Y2) then
-       begin
-       if X1 > X2 then
-          begin
-          i:= X1;
-          X1:= X2;
-          X2:= i;
-          i:= Y1;
-          Y1:= Y2;
-          Y2:= i
-          end;
-       k:= (Y2 - Y1) / (X2 - X1);
-       if X1 < 0 then
-          begin
-          t:= Y1 - 2 - k * X1;
-          X1:= 0
-          end else t:= Y1 - 2;
-       if X2 > cScreenWidth then X2:= cScreenWidth;
-       r.x:= X1;
-       while r.x <= X2 do
-             begin
-             r.y:= round(t);
-             r.w:= 4;
-             r.h:= 4;
-             SDL_FillRect(Surface, @r, cWhiteColor);
-             t:= t + k*3;
-             inc(r.x, 3)
-             end;
-       end else
-       begin
-       if Y1 > Y2 then
-          begin
-          i:= X1;
-          X1:= X2;
-          X2:= i;
-          i:= Y1;
-          Y1:= Y2;
-          Y2:= i
-          end;
-       k:= (X2 - X1) / (Y2 - Y1);
-       if Y1 < 0 then
-          begin
-          t:= X1 - 2 - k * Y1;
-          Y1:= 0
-          end else t:= X1 - 2;
-       if Y2 > cScreenHeight then Y2:= cScreenHeight;
-       r.y:= Y1;
-       while r.y <= Y2 do
-             begin
-             r.x:= round(t);
-             r.w:= 4;
-             r.h:= 4;
-             SDL_FillRect(Surface, @r, cWhiteColor);
-             t:= t + k*3;
-             inc(r.y, 3)
-             end;
-       end
-    end;
-
-begin
-Gear:= GearsList;
-while Gear<>nil do
-      begin
-      case Gear.Kind of
-           gtCloud: DrawSprite(sprCloud   , Round(Gear.X) + WorldDx, Round(Gear.Y) + WorldDy, Gear.State, Surface);
-       gtAmmo_Bomb: DrawSprite(sprBomb , Round(Gear.X) - 8 + WorldDx, Round(Gear.Y) - 8 + WorldDy, trunc(Gear.DirAngle), Surface);
-        gtHedgehog: DrawHedgehog(Round(Gear.X) - 14 + WorldDx, Round(Gear.Y) - 18 + WorldDy, Sign(Gear.dX),
-                                 0, PHedgehog(Gear.Hedgehog).visStepPos div 2,
-                                 Surface);
-    gtAmmo_Grenade: DrawSprite(sprGrenade , Round(Gear.X) - 16 + WorldDx, Round(Gear.Y) - 16 + WorldDy, DxDy2Angle32(Gear.dY, Gear.dX), Surface);
-       gtHealthTag: DrawCaption(Round(Gear.X) + WorldDx, Round(Gear.Y) + WorldDy, PHedgehog(Gear.Hedgehog).HealthTagRect, Surface, true);
-           gtGrave: DrawSpriteFromRect(PHedgehog(Gear.Hedgehog).Team.GraveRect, Round(Gear.X) + WorldDx - 16, Round(Gear.Y) + WorldDy - 16, 32, (GameTicks shr 7) and 7, Surface);
-             gtUFO: DrawSprite(sprUFO, Round(Gear.X) - 16 + WorldDx, Round(Gear.Y) - 16 + WorldDy, (GameTicks shr 7) mod 4, Surface);
-      gtSmokeTrace: if Gear.Tag < 8 then DrawSprite(sprSmokeTrace, Round(Gear.X) - 16 + WorldDx, Round(Gear.Y) - 16 + WorldDy, Gear.Tag, Surface);
-            gtRope: begin
-                    DrawRopeLine(Round(Gear.X) + WorldDx, Round(Gear.Y) + WorldDy,
-                                 Round(PHedgehog(Gear.Hedgehog).Gear.X) + WorldDx, Round(PHedgehog(Gear.Hedgehog).Gear.Y) + WorldDy);
-                    if RopePoints.Count > 0 then
-                       begin
-                       i:= 0;
-                       while i < Pred(RopePoints.Count) do
-                             begin
-                             DrawRopeLine(Round(RopePoints.ar[i].X) + WorldDx, Round(RopePoints.ar[i].Y) + WorldDy,
-                                          Round(RopePoints.ar[Succ(i)].X) + WorldDx, Round(RopePoints.ar[Succ(i)].Y) + WorldDy);
-                             inc(i)
-                             end;
-                       DrawRopeLine(Round(RopePoints.ar[i].X) + WorldDx, Round(RopePoints.ar[i].Y) + WorldDy,
-                                    Round(Gear.X) + WorldDx, Round(Gear.Y) + WorldDy);
-                       DrawSprite(sprRopeHook, Round(RopePoints.ar[0].X) + WorldDx - 16, Round(RopePoints.ar[0].Y) + WorldDy - 16, RopePoints.HookAngle, Surface);
-                       end else
-                       DrawSprite(sprRopeHook, Round(Gear.X) - 16 + WorldDx, Round(Gear.Y) - 16 + WorldDy, DxDy2Angle32(Gear.dY, Gear.dX), Surface);
-                    end;
-              end;
-      Gear:= Gear.NextGear
-      end;
-end;
-
-procedure FreeGearsList;
-var t, tt: PGear;
-begin
-tt:= GearsList;
-GearsList:= nil;
-while tt<>nil do
-      begin
-      t:= tt;
-      tt:= tt.NextGear;
-      try
-      Dispose(t)
-      except OutError(errmsgDynamicVar) end;
-      end;
-end;
-
-procedure InitGears;
-var i: integer;
-begin
-for i:= 0 to cCloudsNumber do AddGear( - cScreenWidth + i * ((cScreenWidth * 2 + 2304) div cCloudsNumber), -128, gtCloud, random(4), (0.5-random)*0.01);
-AddGear(0, 0, gtActionTimer, gtsStartGame, 0, 0, 2000).Health:= 3;
-end;
-
-procedure doMakeExplosion(X, Y, Radius: integer; Mask: LongWord);
-var Gear: PGear;
-    dmg: integer;
-begin
-TargetPoint.X:= NoPointX;
-{$IFDEF DEBUGFILE}if Radius > 3 then AddFileLog('Explosion: at (' + inttostr(x) + ',' + inttostr(y) + ')');{$ENDIF}
-DrawExplosion(X, Y, Radius);
-if (Mask and EXPLAutoSound)<>0 then PlaySound(sndExplosion);
-if (Mask and EXPLNoDamage)<>0 then exit;
-if (Mask and EXPLAllDamageInRadius)=0 then Radius:= Radius shl 1;
-Gear:= GearsList;
-while Gear <> nil do
-      begin
-      dmg:= Radius - Round(sqrt(sqr(Gear.X - X) + sqr(Gear.Y - Y)));
-      if dmg > 0 then
-         begin
-         dmg:= dmg shr 1;
-         case Gear.Kind of
-              gtHedgehog: begin
-                          inc(Gear.Damage, dmg);
-                          Gear.dX:= Gear.dX + dmg / 200 * sign(Gear.X - X);
-                          Gear.dY:= Gear.dY + dmg / 200 * sign(Gear.Y - Y);
-                          FollowGear:= Gear
-                          end;
-                 gtGrave: Gear.dY:= - dmg / 250;
-              end;
-         end;
-      Gear:= Gear.NextGear
-      end
-end;
-
-procedure AssignHHCoords;
-var Gear: PGear;
-    pX, pY: integer;
-begin
-Gear:= GearsList;
-while Gear <> nil do
-      begin
-      if Gear.Kind = gtHedgehog then
-         begin
-         GetHHPoint(pX, pY);
-         Gear.X:= pX;
-         Gear.Y:= pY
-         end;
-      Gear:= Gear.NextGear
-      end
-end;
-
-initialization
-
-finalization
-FreeGearsList
-
-end.
+(*
+ * Hedgewars, a worms-like game
+ * Copyright (c) 2004, 2005 Andrey Korotaev <unC0Rr@gmail.com>
+ *
+ * Distributed under the terms of the BSD-modified licence:
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * with the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ *    this list of conditions and the following disclaimer in the documentation
+ *    and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *)
+
+unit uGears;
+interface
+uses SDLh, uConsts;
+{$INCLUDE options.inc}
+const AllInactive: boolean = false;
+
+type PGear = ^TGear;
+     TGearStepProcedure = procedure (Gear: PGear);
+     TGear = record
+             NextGear, PrevGear: PGear;
+             Active: Boolean;
+             State : Cardinal;
+             X : Real;
+             Y : Real;
+             dX: Real;
+             dY: Real;
+             Kind  : TGearType;
+             doStep: TGearStepProcedure;
+             HalfWidth, HalfHeight: integer;
+             Angle, Power : Cardinal;
+             DirAngle: real;
+             Timer : LongWord;
+             Elasticity: Real;
+             Friction  : Real;
+             Message : Longword;
+             Hedgehog: pointer;
+             Health, Damage: LongWord;
+             CollIndex: Longword;
+             Tag: Longword;
+             end;
+
+function AddGear(X, Y: integer; Kind: TGearType; State: Cardinal; const dX: real=0.0; dY: real=0.0; Timer: LongWord=0): PGear;
+procedure ProcessGears;
+procedure SetAllToActive;
+procedure SetAllHHToActive;
+procedure DrawGears(Surface: PSDL_Surface);
+procedure FreeGearsList;
+procedure InitGears;
+procedure AssignHHCoords;
+
+var CurAmmoGear: PGear = nil;
+
+implementation
+uses uWorld, uMisc, uStore, uConsole, uSound, uTeams, uRandom, uCollisions, uLand;
+var GearsList: PGear = nil;
+    RopePoints: record
+                Count: Longword;
+                HookAngle: integer;
+                ar: array[0..300] of record
+                                  X, Y: real;
+                                  dLen: real;
+                                  b: boolean;
+                                  end;
+                 end;
+
+procedure DeleteGear(Gear: PGear); forward;
+procedure doMakeExplosion(X, Y, Radius: integer; Mask: LongWord); forward;
+
+{$INCLUDE GSHandlers.inc}
+{$INCLUDE HHHandlers.inc}
+
+const doStepHandlers: array[TGearType] of TGearStepProcedure = (
+                                                               doStepCloud,
+                                                               doStepBomb,
+                                                               doStepHedgehog,
+                                                               doStepGrenade,
+                                                               doStepHealthTag,
+                                                               doStepGrave,
+                                                               doStepUFO,
+                                                               doStepShotgunShot,
+                                                               doStepActionTimer,
+                                                               doStepPickHammer,
+                                                               doStepRope,
+                                                               doStepSmokeTrace
+                                                               );
+
+function AddGear(X, Y: integer; Kind: TGearType; State: Cardinal; const dX: real=0.0; dY: real=0.0; Timer: LongWord=0): PGear;
+begin
+{$IFDEF DEBUGFILE}AddFileLog('AddGear: ('+inttostr(x)+','+inttostr(y)+')');{$ENDIF}
+New(Result);
+{$IFDEF DEBUGFILE}AddFileLog('AddGear: handle = '+inttostr(integer(Result)));{$ENDIF}
+FillChar(Result^, sizeof(TGear), 0);
+Result.X:= X;
+Result.Y:= Y;
+Result.Kind := Kind;
+Result.State:= State;
+Result.Active:= true;
+Result.dX:= dX;
+Result.dY:= dY;
+Result.doStep:= doStepHandlers[Kind];
+Result.CollIndex:= High(Longword);
+if CurrentTeam <> nil then
+   Result.Hedgehog:= @CurrentTeam.Hedgehogs[CurrentTeam.CurrHedgehog];
+case Kind of
+   gtAmmo_Bomb: begin
+                Result.HalfWidth:= 4;
+                Result.HalfHeight:= 4;
+                Result.Elasticity:= 0.6;
+                Result.Friction:= 0.995;
+                Result.Timer:= Timer
+                end;
+    gtHedgehog: begin
+                Result.HalfWidth:= 6;
+                Result.HalfHeight:= cHHHalfHeight;
+                Result.Elasticity:= 0.002;
+                Result.Friction:= 0.999;
+                end;
+gtAmmo_Grenade: begin
+                Result.HalfWidth:= 4;
+                Result.HalfHeight:= 4;
+                end;
+   gtHealthTag: begin
+                Result.Timer:= 1500;
+                end;
+       gtGrave: begin
+                Result.HalfWidth:= 10;
+                Result.HalfHeight:= 10;
+                Result.Elasticity:= 0.6;
+                end;
+         gtUFO: begin
+                Result.HalfWidth:= 5;
+                Result.HalfHeight:= 2;
+                Result.Timer:= 500;
+                Result.Elasticity:= 0.9
+                end;
+ gtShotgunShot: begin
+                Result.Timer:= 900;
+                Result.HalfWidth:= 2;
+                Result.HalfHeight:= 2
+                end;
+ gtActionTimer: begin
+                Result.Timer:= Timer
+                end;
+  gtPickHammer: begin
+                Result.HalfWidth:= 10;
+                Result.HalfHeight:= 2;
+                Result.Timer:= 4000
+                end;
+  gtSmokeTrace: begin
+                Result.Tag:= 8
+                end;
+        gtRope: begin
+                Result.HalfWidth:= 3;
+                Result.HalfHeight:= 3;
+                Result.Friction:= 500;
+                RopePoints.Count:= 0;
+                end;
+     end;
+if GearsList = nil then GearsList:= Result
+                   else begin
+                   GearsList.PrevGear:= Result;
+                   Result.NextGear:= GearsList;
+                   GearsList:= Result
+                   end
+end;
+
+procedure DeleteGear(Gear: PGear);
+begin
+if Gear.CollIndex < High(Longword) then DeleteCR(Gear);
+if Gear.Kind = gtHedgehog then
+   if CurAmmoGear <> nil then
+      begin
+      {$IFDEF DEBUGFILE}AddFileLog('DeleteGear: Sending gm_Destroy, hh handle = '+inttostr(integer(Gear)));{$ENDIF}
+      Gear.Message:= gm_Destroy;
+      CurAmmoGear.Message:= gm_Destroy;
+      exit
+      end else PHedgehog(Gear.Hedgehog).Gear:= nil;
+if CurAmmoGear = Gear then
+   CurAmmoGear:= nil;
+if FollowGear = Gear then FollowGear:= nil;
+{$IFDEF DEBUGFILE}AddFileLog('DeleteGear: handle = '+inttostr(integer(Gear)));{$ENDIF}
+if Gear.NextGear <> nil then Gear.NextGear.PrevGear:= Gear.PrevGear;
+if Gear.PrevGear <> nil then Gear.PrevGear.NextGear:= Gear.NextGear
+                        else begin
+                        GearsList:= Gear^.NextGear;
+                        if GearsList <> nil then GearsList.PrevGear:= nil
+                        end;
+Dispose(Gear)
+end;
+
+function CheckNoDamage: boolean; // returns TRUE in case of no damaged hhs
+var Gear: PGear;
+begin
+Result:= true;
+Gear:= GearsList;
+while Gear <> nil do
+      begin
+      if Gear.Kind = gtHedgehog then
+         if Gear.Damage <> 0 then
+            begin
+            Result:= false;
+            if Gear.Health < Gear.Damage then Gear.Health:= 0
+                                         else dec(Gear.Health, Gear.Damage);
+            AddGear(Round(Gear.X), Round(Gear.Y) - 32, gtHealthTag, Gear.Damage).Hedgehog:= Gear.Hedgehog;
+            RenderHealth(PHedgehog(Gear.Hedgehog)^);
+            
+            Gear.Damage:= 0
+            end;
+      Gear:= Gear.NextGear
+      end;
+end;
+
+procedure ProcessGears;
+const delay: integer = cInactDelay;
+var Gear, t: PGear;
+{$IFDEF COUNTTICKS}
+    tickcntA, tickcntB: LongWord;
+const cntSecTicks: LongWord = 0;
+{$ENDIF}
+begin
+{$IFDEF COUNTTICKS}
+asm
+        push    eax
+        push    edx
+        rdtsc
+        mov     tickcntA, eax
+        mov     tickcntB, edx
+        pop     edx
+        pop     eax
+end;
+{$ENDIF}
+AllInactive:= true;
+t:= GearsList;
+while t<>nil do
+      begin
+      Gear:= t;
+      t:= Gear.NextGear;
+      if Gear.Active then Gear.doStep(Gear);
+      end;
+if AllInactive then
+   if (delay > 0)and not isInMultiShoot then
+      begin
+      if delay = cInactDelay then SetAllToActive;
+      dec(delay)
+      end
+   else begin
+   delay:= cInactDelay;
+   if CheckNoDamage then
+      if isInMultiShoot then isInMultiShoot:= false
+                        else ParseCommand('/nextturn');
+   end;
+if TurnTimeLeft > 0 then
+   if CurrentTeam <> nil then
+      if CurrentTeam.Hedgehogs[CurrentTeam.CurrHedgehog].Gear <> nil then
+         if ((CurrentTeam.Hedgehogs[CurrentTeam.CurrHedgehog].Gear.State and gstAttacking) = 0)
+            and not isInMultiShoot then dec(TurnTimeLeft);
+inc(GameTicks);
+{$IFDEF COUNTTICKS}
+asm
+        push    eax
+        push    edx
+        rdtsc
+        sub     eax, [tickcntA]
+        sbb     edx, [tickcntB]
+        add     [cntSecTicks], eax
+        pop     edx
+        pop     eax
+end;
+if (GameTicks and 1023) = 0 then
+   begin
+   cntTicks:= cntSecTicks shr 10;
+   {$IFDEF DEBUGFILE}
+   AddFileLog('<' + inttostr(cntTicks) + '>x1024 ticks');
+   {$ENDIF}
+   cntSecTicks:= 0
+   end;
+{$ENDIF}
+end;
+
+procedure SetAllToActive;
+var t: PGear;
+begin
+AllInactive:= false;
+t:= GearsList;
+while t<>nil do
+      begin
+      t.Active:= true;
+      t:= t.NextGear
+      end
+end;
+
+procedure SetAllHHToActive;
+var t: PGear;
+begin
+AllInactive:= false;
+t:= GearsList;
+while t<>nil do
+      begin
+      if t.Kind = gtHedgehog then t.Active:= true;
+      t:= t.NextGear
+      end
+end;
+
+procedure DrawGears(Surface: PSDL_Surface);
+var Gear: PGear;
+    i: Longword;
+
+    procedure DrawRopeLine(X1, Y1, X2, Y2: integer);
+    var i: integer;
+        t, k: real;
+        r: TSDL_Rect;
+    begin
+    if abs(X1 - X2) > abs(Y1 - Y2) then
+       begin
+       if X1 > X2 then
+          begin
+          i:= X1;
+          X1:= X2;
+          X2:= i;
+          i:= Y1;
+          Y1:= Y2;
+          Y2:= i
+          end;
+       k:= (Y2 - Y1) / (X2 - X1);
+       if X1 < 0 then
+          begin
+          t:= Y1 - 2 - k * X1;
+          X1:= 0
+          end else t:= Y1 - 2;
+       if X2 > cScreenWidth then X2:= cScreenWidth;
+       r.x:= X1;
+       while r.x <= X2 do
+             begin
+             r.y:= round(t);
+             r.w:= 4;
+             r.h:= 4;
+             SDL_FillRect(Surface, @r, cWhiteColor);
+             t:= t + k*3;
+             inc(r.x, 3)
+             end;
+       end else
+       begin
+       if Y1 > Y2 then
+          begin
+          i:= X1;
+          X1:= X2;
+          X2:= i;
+          i:= Y1;
+          Y1:= Y2;
+          Y2:= i
+          end;
+       k:= (X2 - X1) / (Y2 - Y1);
+       if Y1 < 0 then
+          begin
+          t:= X1 - 2 - k * Y1;
+          Y1:= 0
+          end else t:= X1 - 2;
+       if Y2 > cScreenHeight then Y2:= cScreenHeight;
+       r.y:= Y1;
+       while r.y <= Y2 do
+             begin
+             r.x:= round(t);
+             r.w:= 4;
+             r.h:= 4;
+             SDL_FillRect(Surface, @r, cWhiteColor);
+             t:= t + k*3;
+             inc(r.y, 3)
+             end;
+       end
+    end;
+
+begin
+Gear:= GearsList;
+while Gear<>nil do
+      begin
+      case Gear.Kind of
+           gtCloud: DrawSprite(sprCloud   , Round(Gear.X) + WorldDx, Round(Gear.Y) + WorldDy, Gear.State, Surface);
+       gtAmmo_Bomb: DrawSprite(sprBomb , Round(Gear.X) - 8 + WorldDx, Round(Gear.Y) - 8 + WorldDy, trunc(Gear.DirAngle), Surface);
+        gtHedgehog: DrawHedgehog(Round(Gear.X) - 14 + WorldDx, Round(Gear.Y) - 18 + WorldDy, Sign(Gear.dX),
+                                 0, PHedgehog(Gear.Hedgehog).visStepPos div 2,
+                                 Surface);
+    gtAmmo_Grenade: DrawSprite(sprGrenade , Round(Gear.X) - 16 + WorldDx, Round(Gear.Y) - 16 + WorldDy, DxDy2Angle32(Gear.dY, Gear.dX), Surface);
+       gtHealthTag: DrawCaption(Round(Gear.X) + WorldDx, Round(Gear.Y) + WorldDy, PHedgehog(Gear.Hedgehog).HealthTagRect, Surface, true);
+           gtGrave: DrawSpriteFromRect(PHedgehog(Gear.Hedgehog).Team.GraveRect, Round(Gear.X) + WorldDx - 16, Round(Gear.Y) + WorldDy - 16, 32, (GameTicks shr 7) and 7, Surface);
+             gtUFO: DrawSprite(sprUFO, Round(Gear.X) - 16 + WorldDx, Round(Gear.Y) - 16 + WorldDy, (GameTicks shr 7) mod 4, Surface);
+      gtSmokeTrace: if Gear.Tag < 8 then DrawSprite(sprSmokeTrace, Round(Gear.X) - 16 + WorldDx, Round(Gear.Y) - 16 + WorldDy, Gear.Tag, Surface);
+            gtRope: begin
+                    DrawRopeLine(Round(Gear.X) + WorldDx, Round(Gear.Y) + WorldDy,
+                                 Round(PHedgehog(Gear.Hedgehog).Gear.X) + WorldDx, Round(PHedgehog(Gear.Hedgehog).Gear.Y) + WorldDy);
+                    if RopePoints.Count > 0 then
+                       begin
+                       i:= 0;
+                       while i < Pred(RopePoints.Count) do
+                             begin
+                             DrawRopeLine(Round(RopePoints.ar[i].X) + WorldDx, Round(RopePoints.ar[i].Y) + WorldDy,
+                                          Round(RopePoints.ar[Succ(i)].X) + WorldDx, Round(RopePoints.ar[Succ(i)].Y) + WorldDy);
+                             inc(i)
+                             end;
+                       DrawRopeLine(Round(RopePoints.ar[i].X) + WorldDx, Round(RopePoints.ar[i].Y) + WorldDy,
+                                    Round(Gear.X) + WorldDx, Round(Gear.Y) + WorldDy);
+                       DrawSprite(sprRopeHook, Round(RopePoints.ar[0].X) + WorldDx - 16, Round(RopePoints.ar[0].Y) + WorldDy - 16, RopePoints.HookAngle, Surface);
+                       end else
+                       DrawSprite(sprRopeHook, Round(Gear.X) - 16 + WorldDx, Round(Gear.Y) - 16 + WorldDy, DxDy2Angle32(Gear.dY, Gear.dX), Surface);
+                    end;
+              end;
+      Gear:= Gear.NextGear
+      end;
+end;
+
+procedure FreeGearsList;
+var t, tt: PGear;
+begin
+tt:= GearsList;
+GearsList:= nil;
+while tt<>nil do
+      begin
+      t:= tt;
+      tt:= tt.NextGear;
+      try
+      Dispose(t)
+      except OutError(errmsgDynamicVar) end;
+      end;
+end;
+
+procedure InitGears;
+var i: integer;
+begin
+for i:= 0 to cCloudsNumber do AddGear( - cScreenWidth + i * ((cScreenWidth * 2 + 2304) div cCloudsNumber), -128, gtCloud, random(4), (0.5-random)*0.01);
+AddGear(0, 0, gtActionTimer, gtsStartGame, 0, 0, 2000).Health:= 3;
+end;
+
+procedure doMakeExplosion(X, Y, Radius: integer; Mask: LongWord);
+var Gear: PGear;
+    dmg: integer;
+begin
+TargetPoint.X:= NoPointX;
+{$IFDEF DEBUGFILE}if Radius > 3 then AddFileLog('Explosion: at (' + inttostr(x) + ',' + inttostr(y) + ')');{$ENDIF}
+DrawExplosion(X, Y, Radius);
+if (Mask and EXPLAutoSound)<>0 then PlaySound(sndExplosion);
+if (Mask and EXPLNoDamage)<>0 then exit;
+if (Mask and EXPLAllDamageInRadius)=0 then Radius:= Radius shl 1;
+Gear:= GearsList;
+while Gear <> nil do
+      begin
+      dmg:= Radius - Round(sqrt(sqr(Gear.X - X) + sqr(Gear.Y - Y)));
+      if dmg > 0 then
+         begin
+         dmg:= dmg shr 1;
+         case Gear.Kind of
+              gtHedgehog: begin
+                          inc(Gear.Damage, dmg);
+                          Gear.dX:= Gear.dX + dmg / 200 * sign(Gear.X - X);
+                          Gear.dY:= Gear.dY + dmg / 200 * sign(Gear.Y - Y);
+                          FollowGear:= Gear
+                          end;
+                 gtGrave: Gear.dY:= - dmg / 250;
+              end;
+         end;
+      Gear:= Gear.NextGear
+      end
+end;
+
+procedure AssignHHCoords;
+var Gear: PGear;
+    pX, pY: integer;
+begin
+Gear:= GearsList;
+while Gear <> nil do
+      begin
+      if Gear.Kind = gtHedgehog then
+         begin
+         GetHHPoint(pX, pY);
+         Gear.X:= pX;
+         Gear.Y:= pY
+         end;
+      Gear:= Gear.NextGear
+      end
+end;
+
+initialization
+
+finalization
+FreeGearsList
+
+end.