--- a/hedgewars/GSHandlers.inc Mon Aug 22 21:38:06 2005 +0000
+++ b/hedgewars/GSHandlers.inc Tue Aug 23 16:17:53 2005 +0000
@@ -1,550 +1,550 @@
-(*
- * 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.
- *)
-
-procedure doStepDrowningGear(Gear: PGear); forward;
-
-function CheckGearDrowning(Gear: PGear): boolean;
-begin
-Result:= Gear.Y + Gear.HalfHeight >= cWaterLine;
-if Result then
- begin
- Gear.State:= gstDrowning;
- Gear.doStep:= doStepDrowningGear;
- PlaySound(sndSplash)
- end
-end;
-
-procedure CheckCollision(Gear: PGear);
-begin
-if TestCollisionXwithGear(Gear, Sign(Gear.X)) or TestCollisionYwithGear(Gear, Sign(Gear.Y))
- then Gear.State:= Gear.State or gstCollision
- else Gear.State:= Gear.State and not gstCollision
-end;
-
-procedure CheckHHDamage(Gear: PGear);
-begin
-if Gear.dY > 0.35 then Gear.Damage:= Gear.Damage + round(25 * (abs(Gear.dY) - 0.35));
-end;
-
-////////////////////////////////////////////////////////////////////////////////
-////////////////////////////////////////////////////////////////////////////////
-procedure CalcRotationDirAngle(Gear: PGear);
-var dAngle: real;
-begin
-dAngle:= (abs(Gear.dX) + abs(Gear.dY))*0.1;
-if Gear.dX >= 0 then Gear.DirAngle:= Gear.DirAngle + dAngle
- else Gear.DirAngle:= Gear.DirAngle - dAngle;
-if Gear.DirAngle < 0 then Gear.DirAngle:= Gear.DirAngle + 16
-else if Gear.DirAngle >= 16 then Gear.DirAngle:= Gear.DirAngle - 16
-end;
-
-////////////////////////////////////////////////////////////////////////////////
-procedure doStepDrowningGear(Gear: PGear);
-begin
-AllInactive:= false;
-Gear.Y:= Gear.Y + cDrownSpeed;
-if round(Gear.Y) > Gear.HalfHeight + cWaterLine + 48 + cVisibleWater then DeleteGear(Gear)
-end;
-
-////////////////////////////////////////////////////////////////////////////////
-procedure doStepFallingGear(Gear: PGear);
-var b: boolean;
-begin
-if TestCollisionYwithGear(Gear, Sign(Gear.dY)) then
- begin
- Gear.dX:= Gear.dX * Gear.Friction;
- Gear.dY:= - Gear.dY * Gear.Elasticity;
- b:= false
- end else b:= true;
-if TestCollisionXwithGear(Gear, Sign(Gear.dX)) then
- begin
- Gear.dX:= - Gear.dX * Gear.Elasticity;
-// Gear.dY:= Gear.dY;
- b:= false
- end;
-if b then
- begin
- Gear.dY:= Gear.dY + cGravity;
- Gear.State:= Gear.State and not gstCollision
- end else
- begin
- if sqr(Gear.dX) + sqr(Gear.dY) < 0.00001 then
- if (Gear.Timer = 0) then Gear.Active:= false
- else begin
- Gear.dX:= 0;
- Gear.dY:= 0
- end;
- Gear.State:= Gear.State or gstCollision
- end;
-Gear.X:= Gear.X + Gear.dX;
-Gear.Y:= Gear.Y + Gear.dY;
-CheckGearDrowning(Gear);
-if (sqr(Gear.dX) + sqr(Gear.dY) < 0.003) then Gear.State:= Gear.State and not gstMoving
- else Gear.State:= Gear.State or gstMoving
-end;
-
-////////////////////////////////////////////////////////////////////////////////
-procedure doStepCloud(Gear: PGear);
-begin
-Gear.X:= Gear.X + cWindSpeed * 200 + Gear.dX;
-if Gear.X < -cScreenWidth-256 then Gear.X:= cScreenWidth + 2048 else
-if Gear.X > cScreenWidth + 2048 then Gear.X:= -cScreenWidth - 256
-end;
-
-////////////////////////////////////////////////////////////////////////////////
-procedure doStepBomb(Gear: PGear);
-begin
-AllInactive:= false;
-doStepFallingGear(Gear);
-dec(Gear.Timer);
-if Gear.Timer = 0 then
- begin
- doMakeExplosion(round(Gear.X), round(Gear.Y), 50, EXPLAutoSound);
- DeleteGear(Gear);
- SetAllToActive;
- exit
- end;
-CalcRotationDirAngle(Gear);
-if (Gear.State and (gstCollision or gstMoving)) = (gstCollision or gstMoving) then PlaySound(sndGrenadeImpact)
-end;
-
-////////////////////////////////////////////////////////////////////////////////
-procedure doStepGrenade(Gear: PGear);
-begin
-AllInactive:= false;
-Gear.dX:= Gear.dX + cWindSpeed;
-doStepFallingGear(Gear);
-if (Gear.State and gstCollision) <> 0 then
- begin
- doMakeExplosion(round(Gear.X), round(Gear.Y), 50, EXPLAutoSound);
- DeleteGear(Gear);
- SetAllToActive;
- exit
- end;
-if (GameTicks and $3F) = 0 then
- AddGear(round(Gear.X), round(Gear.Y), gtSmokeTrace, 0)
-end;
-
-////////////////////////////////////////////////////////////////////////////////
-procedure doStepHealthTag(Gear: PGear);
-begin
-AllInactive:= false;
-dec(Gear.Timer);
-Gear.Y:= Gear.Y - 0.07;
-if Gear.Timer = 0 then
- begin
- PHedgehog(Gear.Hedgehog).Gear.Active:= true;
- DeleteGear(Gear)
- end
-end;
-
-////////////////////////////////////////////////////////////////////////////////
-procedure doStepGrave(Gear: PGear);
-begin
-AllInactive:= false;
-if Gear.dY < 0 then
- if TestCollisionY(Gear, -1) then Gear.dY:= 0;
-
-if Gear.dY >=0 then
- if TestCollisionY(Gear, 1) then
- begin
- Gear.dY:= - Gear.dY * Gear.Elasticity;
- if Gear.dY > - 0.001 then
- begin
- Gear.Active:= false;
- exit
- end else if Gear.dY < - 0.03 then PlaySound(sndGraveImpact)
- end;
-Gear.Y:= Gear.Y + Gear.dY;
-CheckGearDrowning(Gear);
-Gear.dY:= Gear.dY + cGravity
-end;
-
-////////////////////////////////////////////////////////////////////////////////
-procedure doStepUFOWork(Gear: PGear);
-var t: real;
-begin
-AllInactive:= false;
-t:= sqrt(sqr(Gear.dX) + sqr(Gear.dY));
-Gear.dX:= Gear.Elasticity * (Gear.dX + 0.000004 * (TargetPoint.X - trunc(Gear.X)));
-Gear.dY:= Gear.Elasticity * (Gear.dY + 0.000004 * (TargetPoint.Y - trunc(Gear.Y)));
-t:= t / (sqrt(sqr(Gear.dX) + sqr(Gear.dY)));
-Gear.dX:= Gear.dX * t;
-Gear.dY:= Gear.dY * t;
-Gear.X:= Gear.X + Gear.dX;
-Gear.Y:= Gear.Y + Gear.dY;
-CheckCollision(Gear);
-dec(Gear.Timer);
-if ((Gear.State and gstCollision) <> 0) or (Gear.Timer = 0) then
- begin
- doMakeExplosion(round(Gear.X), round(Gear.Y), 50, EXPLAutoSound);
- DeleteGear(Gear);
- SetAllToActive
- end;
-end;
-
-procedure doStepUFO(Gear: PGear);
-begin
-AllInactive:= false;
-Gear.X:= Gear.X + Gear.dX;
-Gear.Y:= Gear.Y + Gear.dY;
-Gear.dY:= Gear.dY + cGravity;
-CheckCollision(Gear);
-if (Gear.State and gstCollision) <> 0 then
- begin
- doMakeExplosion(round(Gear.X), round(Gear.Y), 50, EXPLAutoSound);
- DeleteGear(Gear);
- SetAllToActive;
- exit
- end;
-dec(Gear.Timer);
-if Gear.Timer = 0 then
- begin
- Gear.Timer:= 5000;
- Gear.doStep:= doStepUFOWork
- end;
-end;
-
-////////////////////////////////////////////////////////////////////////////////
-procedure doStepShotgunShot(Gear: PGear);
-var i: LongWord;
-begin
-AllInactive:= false;
-if Gear.Timer > 0 then
- begin
- dec(Gear.Timer);
- if Gear.Timer = 1 then PlaySound(sndShotgunFire);
- exit
- end;
-i:= 200;
-repeat
-Gear.X:= Gear.X + Gear.dX;
-Gear.Y:= Gear.Y + Gear.dY;
-CheckCollision(Gear);
-if (Gear.State and gstCollision) <> 0 then
- begin
- doMakeExplosion(round(Gear.X), round(Gear.Y), 25, EXPLAllDamageInRadius);
- DeleteGear(Gear);
- SetAllToActive;
- exit
- end;
-dec(i)
-until i = 0;
-if (Gear.X < 0) or (Gear.Y < 0) or (Gear.X > 2048) or (Gear.Y > 1024) then
- DeleteGear(Gear)
-end;
-
-////////////////////////////////////////////////////////////////////////////////
-procedure doStepActionTimer(Gear: PGear);
-begin
-dec(Gear.Timer);
-case Gear.State of
- gtsStartGame: begin
- AllInactive:= false;
- if Gear.Timer > 0 then exit;
- AddCaption('Let''s fight!', $FFFFFF, capgrpStartGame);
- DeleteGear(Gear)
- end;
- end;
-end;
-
-////////////////////////////////////////////////////////////////////////////////
-procedure doStepPickHammerWork(Gear: PGear);
-var i, ei: integer;
- HHGear: PGear;
-begin
-Allinactive:= false;
-dec(Gear.Timer);
-if (Gear.Timer = 0)or((Gear.Message and gm_Destroy) <> 0) then
- begin
- DeleteGear(Gear);
- AfterAttack;
- SetAllToActive;
- exit
- end;
-HHGear:= PHedgehog(Gear.Hedgehog).Gear;
-if (Gear.Timer and $3F) = 0 then
- begin
- i:= round(Gear.X) - Gear.HalfWidth - GetRandom(2);
- ei:= round(Gear.X) + Gear.HalfWidth + GetRandom(2);
- while i <= ei do
- begin
- doMakeExplosion(i, round(Gear.Y) + 3, 3, 0);
- inc(i, 1)
- end;
- SetAllToActive;
- Gear.X:= Gear.X + Gear.dX;
- Gear.Y:= Gear.Y + 1.9
- end;
-if TestCollisionYwithGear(Gear, 1) then
- begin
- Gear.dY:= 0;
- HHGear.dX:= 0.0000001 * Sign(PGear(Gear.Hedgehog).dX);
- HHGear.dY:= 0;
- end else
- begin
- Gear.dY:= Gear.dY + cGravity;
- Gear.Y:= Gear.Y + Gear.dY;
- if Gear.Y > 1024 then Gear.Timer:= 1
- end;
-
-Gear.X:= Gear.X + HHGear.dX;
-HHGear.X:= Gear.X;
-HHGear.Y:= Gear.Y - cHHHalfHeight;
-
-if (Gear.Message and gm_Attack) <> 0 then
- if (Gear.State and gsttmpFlag) <> 0 then Gear.Timer:= 1 else else
- if (Gear.State and gsttmpFlag) = 0 then Gear.State:= Gear.State or gsttmpFlag;
-if ((Gear.Message and gm_Left) <> 0) then Gear.dX:= -0.3 else
- if ((Gear.Message and gm_Right) <> 0) then Gear.dX:= 0.3
- else Gear.dX:= 0;
-end;
-
-procedure doStepPickHammer(Gear: PGear);
-var i, y: integer;
- ar: TRangeArray;
-begin
-i:= 0;
-y:= round(Gear.Y) - cHHHalfHeight*2;
-while y < round(Gear.Y) do
- begin
- ar[i].Left := round(Gear.X) - Gear.HalfWidth - GetRandom(2);
- ar[i].Right:= round(Gear.X) + Gear.HalfWidth + GetRandom(2);
- inc(y, 2);
- inc(i)
- end;
-DrawLineExplosions(@ar, 3, round(Gear.Y) - cHHHalfHeight*2, 2, Pred(i));
-Gear.dY:= PHedgehog(Gear.Hedgehog).Gear.dY;
-doStepPickHammerWork(Gear);
-Gear.doStep:= doStepPickHammerWork
-end;
-
-////////////////////////////////////////////////////////////////////////////////
-procedure doStepRopeWork(Gear: PGear);
-const pidiv2: real = pi/2;
- flCheck: boolean = false;
-var HHGear: PGear;
- len, cs, cc, tx, ty: real;
- lx, ly: integer;
-
- procedure DeleteMe;
- begin
- with HHGear^ do
- begin
- Message:= Message and not gm_Attack;
- State:= State or gstFalling;
- end;
- DeleteGear(Gear);
- OnUsedAmmo(PHedgehog(Gear.Hedgehog)^.Ammo);
- ApplyAmmoChanges(PHedgehog(Gear.Hedgehog))
- end;
-
-begin
-HHGear:= PHedgehog(Gear.Hedgehog).Gear;
-if (HHGear.State and gstHHDriven) = 0 then
- begin
- DeleteMe;
- exit
- end;
-Gear.dX:= HHGear.X - Gear.X;
-Gear.dY:= HHGear.Y - Gear.Y;
-
-if (Gear.Message and gm_Left <> 0) then HHGear.dX:= HHGear.dX - 0.0002 else
-if (Gear.Message and gm_Right <> 0) then HHGear.dX:= HHGear.dX + 0.0002;
-
-if not TestCollisionYwithGear(HHGear, 1) then HHGear.dY:= HHGear.dY + cGravity;
-
-HHGear.DirAngle:= arctan(Gear.dY + HHGear.dY, Gear.dX + HHGear.dX);
-cs:= sin(HHGear.DirAngle);
-cc:= cos(HHGear.DirAngle);
-
-flCheck:= not flCheck;
-if flCheck then // check whether rope needs dividing
- begin
- len:= Gear.Elasticity - 20;
- while len > 5 do
- begin
- tx:= cc*len;
- ty:= cs*len;
-// if TestCollisionXwithXYShift(Gear, round(tx), round(ty), Sign(HHGear.dX))
-/// or TestCollisionYwithXYShift(Gear, round(tx), round(ty), Sign(HHGear.dY)) then
- lx:= round(Gear.X + tx) + sign(HHGear.dX);
- ly:= round(Gear.Y + ty) + sign(HHGear.dY);
- if ((ly and $FFFFFC00) = 0) and ((lx and $FFFFF800) = 0)and (Land[ly, lx] <> 0) then
- begin
- with RopePoints.ar[RopePoints.Count] do
- begin
- X:= Gear.X;
- Y:= Gear.Y;
- if RopePoints.Count = 0 then RopePoints.HookAngle:= DxDy2Angle32(Gear.dY, Gear.dX);
- b:= (cc * HHGear.dY) > (cs * HHGear.dX);
- dLen:= len
- end;
- Gear.X:= Gear.X + tx;
- Gear.Y:= Gear.Y + ty;
- inc(RopePoints.Count);
- Gear.Elasticity:= Gear.Elasticity - len;
- Gear.Friction:= Gear.Friction - len;
- break
- end;
- len:= len - 3
- end;
- end else
- if RopePoints.Count > 0 then // check whether the last dividing point could be removed
- begin
- tx:= RopePoints.ar[Pred(RopePoints.Count)].X;
- ty:= RopePoints.ar[Pred(RopePoints.Count)].Y;
- if RopePoints.ar[Pred(RopePoints.Count)].b xor ((tx - Gear.X) * (ty - HHGear.Y) > (tx - HHGear.X) * (ty - Gear.Y)) then
- begin
- dec(RopePoints.Count);
- Gear.X:=RopePoints.ar[RopePoints.Count].X;
- Gear.Y:=RopePoints.ar[RopePoints.Count].Y;
- Gear.Elasticity:= Gear.Elasticity + RopePoints.ar[RopePoints.Count].dLen;
- Gear.Friction:= Gear.Friction + RopePoints.ar[RopePoints.Count].dLen
- end
- end;
-
-Gear.dX:= HHGear.X - Gear.X;
-Gear.dY:= HHGear.Y - Gear.Y;
-HHGear.DirAngle:= arctan(Gear.dY + HHGear.dY, Gear.dX + HHGear.dX);
-cs:= sin(HHGear.DirAngle);
-cc:= cos(HHGear.DirAngle);
-
-HHGear.dX:= HHGear.X;
-HHGear.dY:= HHGear.Y;
-
-if ((Gear.Message and gm_Down) <> 0) and (Gear.Elasticity < Gear.Friction) then
- if not (TestCollisionXwithGear(HHGear, Sign(Gear.dX))
- or TestCollisionYwithGear(HHGear, Sign(Gear.dY))) then Gear.Elasticity:= Gear.Elasticity + 0.3;
-
-if ((Gear.Message and gm_Up) <> 0) and (Gear.Elasticity > 30) then
- if not (TestCollisionXwithGear(HHGear, -Sign(Gear.dX))
- or TestCollisionYwithGear(HHGear, -Sign(Gear.dY))) then Gear.Elasticity:= Gear.Elasticity - 0.3;
-
-HHGear.X:= Gear.X + cc*Gear.Elasticity;
-HHGear.Y:= Gear.Y + cs*Gear.Elasticity;
-
-HHGear.dX:= HHGear.X - HHGear.dX;
-HHGear.dY:= HHGear.Y - HHGear.dY;
-
-if TestCollisionXwithGear(HHGear, Sign(HHGear.dX)) then
- HHGear.dX:= -0.9 * HHGear.dX;
-if TestCollisionYwithGear(HHGear, Sign(HHGear.dY)) then
- HHGear.dY:= -0.9 * HHGear.dY;
-
-if (Gear.Message and gm_Attack) <> 0 then
- if (Gear.State and gsttmpFlag) <> 0 then DeleteMe else
-else if (Gear.State and gsttmpFlag) = 0 then Gear.State:= Gear.State or gsttmpFlag;
-end;
-
-
-procedure doStepRopeAttach(Gear: PGear);
-var HHGear: PGear;
- tx, ty, tt: real;
-begin
-Gear.X:= Gear.X + Gear.dX;
-Gear.Y:= Gear.Y + Gear.dY;
-Gear.Elasticity:= Gear.Elasticity + 1.0;
-HHGear:= PHedgehog(Gear.Hedgehog)^.Gear;
-if (HHGear.State and gstFalling) <> 0 then
- if HHTestCollisionYwithGear(HHGear, 1) then
- begin
- HHGear.dY:= 0;
- CheckHHDamage(HHGear);
- HHGear.State:= HHGear.State and not (gstFalling or gstHHJumping);
- end else
- begin
- if TestCollisionXwithGear(HHGear, Sign(HHGear.dX)) then HHGear.dX:= 0.0000001 * Sign(HHGear.dX);
- HHGear.X:= HHGear.X + HHGear.dX;
- HHGear.Y:= HHGear.Y + HHGear.dY;
- Gear.X:= Gear.X + HHGear.dX;
- Gear.Y:= Gear.Y + HHGear.dY;
- HHGear.dY:= HHGear.dY + cGravity;
- tt:= Gear.Elasticity;
- tx:= 0;
- ty:= 0;
- while tt > 20 do
- begin
- if TestCollisionXwithXYShift(Gear, round(tx), round(ty), Sign(Gear.dX))
- or TestCollisionYwithXYShift(Gear, round(tx), round(ty), Sign(Gear.dY)) then
- begin
- Gear.X:= Gear.X + tx;
- Gear.Y:= Gear.Y + ty;
- Gear.Elasticity:= tt;
- Gear.doStep:= doStepRopeWork;
- with HHGear^ do State:= State and not gstAttacking;
- tt:= 0
- end;
- tx:= tx - Gear.dX - Gear.dX;
- ty:= ty - Gear.dY - Gear.dY;
- tt:= tt - 2.0;
- end;
- end;
-CheckCollision(Gear);
-if (Gear.State and gstCollision) <> 0 then
- begin
- Gear.doStep:= doStepRopeWork;
- with HHGear^ do State:= State and not gstAttacking;
- if Gear.Elasticity < 10 then
- Gear.Elasticity:= 10000;
- end;
-
-if (Gear.Elasticity >= Gear.Friction) or ((Gear.Message and gm_Attack) = 0) then
- begin
- with PHedgehog(Gear.Hedgehog).Gear^ do
- begin
- State:= State and not gstAttacking;
- Message:= Message and not gm_Attack
- end;
- DeleteGear(Gear)
- end
-end;
-
-procedure doStepRope(Gear: PGear);
-begin
-Gear.doStep:= doStepRopeAttach
-end;
-
-////////////////////////////////////////////////////////////////////////////////
-procedure doStepSmokeTrace(Gear: PGear);
-begin
-inc(Gear.Timer);
-if Gear.Timer > 64 then
- begin
- Gear.Timer:= 0;
- dec(Gear.Tag)
- end;
-Gear.dX:= Gear.dX + cWindSpeed;
-Gear.X:= Gear.X + Gear.dX;
-if Gear.Tag = 0 then DeleteGear(Gear)
-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.
+ *)
+
+procedure doStepDrowningGear(Gear: PGear); forward;
+
+function CheckGearDrowning(Gear: PGear): boolean;
+begin
+Result:= Gear.Y + Gear.HalfHeight >= cWaterLine;
+if Result then
+ begin
+ Gear.State:= gstDrowning;
+ Gear.doStep:= doStepDrowningGear;
+ PlaySound(sndSplash)
+ end
+end;
+
+procedure CheckCollision(Gear: PGear);
+begin
+if TestCollisionXwithGear(Gear, Sign(Gear.X)) or TestCollisionYwithGear(Gear, Sign(Gear.Y))
+ then Gear.State:= Gear.State or gstCollision
+ else Gear.State:= Gear.State and not gstCollision
+end;
+
+procedure CheckHHDamage(Gear: PGear);
+begin
+if Gear.dY > 0.35 then Gear.Damage:= Gear.Damage + round(25 * (abs(Gear.dY) - 0.35));
+end;
+
+////////////////////////////////////////////////////////////////////////////////
+////////////////////////////////////////////////////////////////////////////////
+procedure CalcRotationDirAngle(Gear: PGear);
+var dAngle: real;
+begin
+dAngle:= (abs(Gear.dX) + abs(Gear.dY))*0.1;
+if Gear.dX >= 0 then Gear.DirAngle:= Gear.DirAngle + dAngle
+ else Gear.DirAngle:= Gear.DirAngle - dAngle;
+if Gear.DirAngle < 0 then Gear.DirAngle:= Gear.DirAngle + 16
+else if Gear.DirAngle >= 16 then Gear.DirAngle:= Gear.DirAngle - 16
+end;
+
+////////////////////////////////////////////////////////////////////////////////
+procedure doStepDrowningGear(Gear: PGear);
+begin
+AllInactive:= false;
+Gear.Y:= Gear.Y + cDrownSpeed;
+if round(Gear.Y) > Gear.HalfHeight + cWaterLine + 48 + cVisibleWater then DeleteGear(Gear)
+end;
+
+////////////////////////////////////////////////////////////////////////////////
+procedure doStepFallingGear(Gear: PGear);
+var b: boolean;
+begin
+if TestCollisionYwithGear(Gear, Sign(Gear.dY)) then
+ begin
+ Gear.dX:= Gear.dX * Gear.Friction;
+ Gear.dY:= - Gear.dY * Gear.Elasticity;
+ b:= false
+ end else b:= true;
+if TestCollisionXwithGear(Gear, Sign(Gear.dX)) then
+ begin
+ Gear.dX:= - Gear.dX * Gear.Elasticity;
+// Gear.dY:= Gear.dY;
+ b:= false
+ end;
+if b then
+ begin
+ Gear.dY:= Gear.dY + cGravity;
+ Gear.State:= Gear.State and not gstCollision
+ end else
+ begin
+ if sqr(Gear.dX) + sqr(Gear.dY) < 0.00001 then
+ if (Gear.Timer = 0) then Gear.Active:= false
+ else begin
+ Gear.dX:= 0;
+ Gear.dY:= 0
+ end;
+ Gear.State:= Gear.State or gstCollision
+ end;
+Gear.X:= Gear.X + Gear.dX;
+Gear.Y:= Gear.Y + Gear.dY;
+CheckGearDrowning(Gear);
+if (sqr(Gear.dX) + sqr(Gear.dY) < 0.003) then Gear.State:= Gear.State and not gstMoving
+ else Gear.State:= Gear.State or gstMoving
+end;
+
+////////////////////////////////////////////////////////////////////////////////
+procedure doStepCloud(Gear: PGear);
+begin
+Gear.X:= Gear.X + cWindSpeed * 200 + Gear.dX;
+if Gear.X < -cScreenWidth-256 then Gear.X:= cScreenWidth + 2048 else
+if Gear.X > cScreenWidth + 2048 then Gear.X:= -cScreenWidth - 256
+end;
+
+////////////////////////////////////////////////////////////////////////////////
+procedure doStepBomb(Gear: PGear);
+begin
+AllInactive:= false;
+doStepFallingGear(Gear);
+dec(Gear.Timer);
+if Gear.Timer = 0 then
+ begin
+ doMakeExplosion(round(Gear.X), round(Gear.Y), 50, EXPLAutoSound);
+ DeleteGear(Gear);
+ SetAllToActive;
+ exit
+ end;
+CalcRotationDirAngle(Gear);
+if (Gear.State and (gstCollision or gstMoving)) = (gstCollision or gstMoving) then PlaySound(sndGrenadeImpact)
+end;
+
+////////////////////////////////////////////////////////////////////////////////
+procedure doStepGrenade(Gear: PGear);
+begin
+AllInactive:= false;
+Gear.dX:= Gear.dX + cWindSpeed;
+doStepFallingGear(Gear);
+if (Gear.State and gstCollision) <> 0 then
+ begin
+ doMakeExplosion(round(Gear.X), round(Gear.Y), 50, EXPLAutoSound);
+ DeleteGear(Gear);
+ SetAllToActive;
+ exit
+ end;
+if (GameTicks and $3F) = 0 then
+ AddGear(round(Gear.X), round(Gear.Y), gtSmokeTrace, 0)
+end;
+
+////////////////////////////////////////////////////////////////////////////////
+procedure doStepHealthTag(Gear: PGear);
+begin
+AllInactive:= false;
+dec(Gear.Timer);
+Gear.Y:= Gear.Y - 0.07;
+if Gear.Timer = 0 then
+ begin
+ PHedgehog(Gear.Hedgehog).Gear.Active:= true;
+ DeleteGear(Gear)
+ end
+end;
+
+////////////////////////////////////////////////////////////////////////////////
+procedure doStepGrave(Gear: PGear);
+begin
+AllInactive:= false;
+if Gear.dY < 0 then
+ if TestCollisionY(Gear, -1) then Gear.dY:= 0;
+
+if Gear.dY >=0 then
+ if TestCollisionY(Gear, 1) then
+ begin
+ Gear.dY:= - Gear.dY * Gear.Elasticity;
+ if Gear.dY > - 0.001 then
+ begin
+ Gear.Active:= false;
+ exit
+ end else if Gear.dY < - 0.03 then PlaySound(sndGraveImpact)
+ end;
+Gear.Y:= Gear.Y + Gear.dY;
+CheckGearDrowning(Gear);
+Gear.dY:= Gear.dY + cGravity
+end;
+
+////////////////////////////////////////////////////////////////////////////////
+procedure doStepUFOWork(Gear: PGear);
+var t: real;
+begin
+AllInactive:= false;
+t:= sqrt(sqr(Gear.dX) + sqr(Gear.dY));
+Gear.dX:= Gear.Elasticity * (Gear.dX + 0.000004 * (TargetPoint.X - trunc(Gear.X)));
+Gear.dY:= Gear.Elasticity * (Gear.dY + 0.000004 * (TargetPoint.Y - trunc(Gear.Y)));
+t:= t / (sqrt(sqr(Gear.dX) + sqr(Gear.dY)));
+Gear.dX:= Gear.dX * t;
+Gear.dY:= Gear.dY * t;
+Gear.X:= Gear.X + Gear.dX;
+Gear.Y:= Gear.Y + Gear.dY;
+CheckCollision(Gear);
+dec(Gear.Timer);
+if ((Gear.State and gstCollision) <> 0) or (Gear.Timer = 0) then
+ begin
+ doMakeExplosion(round(Gear.X), round(Gear.Y), 50, EXPLAutoSound);
+ DeleteGear(Gear);
+ SetAllToActive
+ end;
+end;
+
+procedure doStepUFO(Gear: PGear);
+begin
+AllInactive:= false;
+Gear.X:= Gear.X + Gear.dX;
+Gear.Y:= Gear.Y + Gear.dY;
+Gear.dY:= Gear.dY + cGravity;
+CheckCollision(Gear);
+if (Gear.State and gstCollision) <> 0 then
+ begin
+ doMakeExplosion(round(Gear.X), round(Gear.Y), 50, EXPLAutoSound);
+ DeleteGear(Gear);
+ SetAllToActive;
+ exit
+ end;
+dec(Gear.Timer);
+if Gear.Timer = 0 then
+ begin
+ Gear.Timer:= 5000;
+ Gear.doStep:= doStepUFOWork
+ end;
+end;
+
+////////////////////////////////////////////////////////////////////////////////
+procedure doStepShotgunShot(Gear: PGear);
+var i: LongWord;
+begin
+AllInactive:= false;
+if Gear.Timer > 0 then
+ begin
+ dec(Gear.Timer);
+ if Gear.Timer = 1 then PlaySound(sndShotgunFire);
+ exit
+ end;
+i:= 200;
+repeat
+Gear.X:= Gear.X + Gear.dX;
+Gear.Y:= Gear.Y + Gear.dY;
+CheckCollision(Gear);
+if (Gear.State and gstCollision) <> 0 then
+ begin
+ doMakeExplosion(round(Gear.X), round(Gear.Y), 25, EXPLAllDamageInRadius);
+ DeleteGear(Gear);
+ SetAllToActive;
+ exit
+ end;
+dec(i)
+until i = 0;
+if (Gear.X < 0) or (Gear.Y < 0) or (Gear.X > 2048) or (Gear.Y > 1024) then
+ DeleteGear(Gear)
+end;
+
+////////////////////////////////////////////////////////////////////////////////
+procedure doStepActionTimer(Gear: PGear);
+begin
+dec(Gear.Timer);
+case Gear.State of
+ gtsStartGame: begin
+ AllInactive:= false;
+ if Gear.Timer > 0 then exit;
+ AddCaption('Let''s fight!', $FFFFFF, capgrpStartGame);
+ DeleteGear(Gear)
+ end;
+ end;
+end;
+
+////////////////////////////////////////////////////////////////////////////////
+procedure doStepPickHammerWork(Gear: PGear);
+var i, ei: integer;
+ HHGear: PGear;
+begin
+Allinactive:= false;
+dec(Gear.Timer);
+if (Gear.Timer = 0)or((Gear.Message and gm_Destroy) <> 0) then
+ begin
+ DeleteGear(Gear);
+ AfterAttack;
+ SetAllToActive;
+ exit
+ end;
+HHGear:= PHedgehog(Gear.Hedgehog).Gear;
+if (Gear.Timer and $3F) = 0 then
+ begin
+ i:= round(Gear.X) - Gear.HalfWidth - GetRandom(2);
+ ei:= round(Gear.X) + Gear.HalfWidth + GetRandom(2);
+ while i <= ei do
+ begin
+ doMakeExplosion(i, round(Gear.Y) + 3, 3, 0);
+ inc(i, 1)
+ end;
+ SetAllToActive;
+ Gear.X:= Gear.X + Gear.dX;
+ Gear.Y:= Gear.Y + 1.9
+ end;
+if TestCollisionYwithGear(Gear, 1) then
+ begin
+ Gear.dY:= 0;
+ HHGear.dX:= 0.0000001 * Sign(PGear(Gear.Hedgehog).dX);
+ HHGear.dY:= 0;
+ end else
+ begin
+ Gear.dY:= Gear.dY + cGravity;
+ Gear.Y:= Gear.Y + Gear.dY;
+ if Gear.Y > 1024 then Gear.Timer:= 1
+ end;
+
+Gear.X:= Gear.X + HHGear.dX;
+HHGear.X:= Gear.X;
+HHGear.Y:= Gear.Y - cHHHalfHeight;
+
+if (Gear.Message and gm_Attack) <> 0 then
+ if (Gear.State and gsttmpFlag) <> 0 then Gear.Timer:= 1 else else
+ if (Gear.State and gsttmpFlag) = 0 then Gear.State:= Gear.State or gsttmpFlag;
+if ((Gear.Message and gm_Left) <> 0) then Gear.dX:= -0.3 else
+ if ((Gear.Message and gm_Right) <> 0) then Gear.dX:= 0.3
+ else Gear.dX:= 0;
+end;
+
+procedure doStepPickHammer(Gear: PGear);
+var i, y: integer;
+ ar: TRangeArray;
+begin
+i:= 0;
+y:= round(Gear.Y) - cHHHalfHeight*2;
+while y < round(Gear.Y) do
+ begin
+ ar[i].Left := round(Gear.X) - Gear.HalfWidth - GetRandom(2);
+ ar[i].Right:= round(Gear.X) + Gear.HalfWidth + GetRandom(2);
+ inc(y, 2);
+ inc(i)
+ end;
+DrawLineExplosions(@ar, 3, round(Gear.Y) - cHHHalfHeight*2, 2, Pred(i));
+Gear.dY:= PHedgehog(Gear.Hedgehog).Gear.dY;
+doStepPickHammerWork(Gear);
+Gear.doStep:= doStepPickHammerWork
+end;
+
+////////////////////////////////////////////////////////////////////////////////
+procedure doStepRopeWork(Gear: PGear);
+const pidiv2: real = pi/2;
+ flCheck: boolean = false;
+var HHGear: PGear;
+ len, cs, cc, tx, ty: real;
+ lx, ly: integer;
+
+ procedure DeleteMe;
+ begin
+ with HHGear^ do
+ begin
+ Message:= Message and not gm_Attack;
+ State:= State or gstFalling;
+ end;
+ DeleteGear(Gear);
+ OnUsedAmmo(PHedgehog(Gear.Hedgehog)^.Ammo);
+ ApplyAmmoChanges(PHedgehog(Gear.Hedgehog))
+ end;
+
+begin
+HHGear:= PHedgehog(Gear.Hedgehog).Gear;
+if (HHGear.State and gstHHDriven) = 0 then
+ begin
+ DeleteMe;
+ exit
+ end;
+Gear.dX:= HHGear.X - Gear.X;
+Gear.dY:= HHGear.Y - Gear.Y;
+
+if (Gear.Message and gm_Left <> 0) then HHGear.dX:= HHGear.dX - 0.0002 else
+if (Gear.Message and gm_Right <> 0) then HHGear.dX:= HHGear.dX + 0.0002;
+
+if not TestCollisionYwithGear(HHGear, 1) then HHGear.dY:= HHGear.dY + cGravity;
+
+HHGear.DirAngle:= arctan(Gear.dY + HHGear.dY, Gear.dX + HHGear.dX);
+cs:= sin(HHGear.DirAngle);
+cc:= cos(HHGear.DirAngle);
+
+flCheck:= not flCheck;
+if flCheck then // check whether rope needs dividing
+ begin
+ len:= Gear.Elasticity - 20;
+ while len > 5 do
+ begin
+ tx:= cc*len;
+ ty:= cs*len;
+// if TestCollisionXwithXYShift(Gear, round(tx), round(ty), Sign(HHGear.dX))
+/// or TestCollisionYwithXYShift(Gear, round(tx), round(ty), Sign(HHGear.dY)) then
+ lx:= round(Gear.X + tx) + sign(HHGear.dX);
+ ly:= round(Gear.Y + ty) + sign(HHGear.dY);
+ if ((ly and $FFFFFC00) = 0) and ((lx and $FFFFF800) = 0)and (Land[ly, lx] <> 0) then
+ begin
+ with RopePoints.ar[RopePoints.Count] do
+ begin
+ X:= Gear.X;
+ Y:= Gear.Y;
+ if RopePoints.Count = 0 then RopePoints.HookAngle:= DxDy2Angle32(Gear.dY, Gear.dX);
+ b:= (cc * HHGear.dY) > (cs * HHGear.dX);
+ dLen:= len
+ end;
+ Gear.X:= Gear.X + tx;
+ Gear.Y:= Gear.Y + ty;
+ inc(RopePoints.Count);
+ Gear.Elasticity:= Gear.Elasticity - len;
+ Gear.Friction:= Gear.Friction - len;
+ break
+ end;
+ len:= len - 3
+ end;
+ end else
+ if RopePoints.Count > 0 then // check whether the last dividing point could be removed
+ begin
+ tx:= RopePoints.ar[Pred(RopePoints.Count)].X;
+ ty:= RopePoints.ar[Pred(RopePoints.Count)].Y;
+ if RopePoints.ar[Pred(RopePoints.Count)].b xor ((tx - Gear.X) * (ty - HHGear.Y) > (tx - HHGear.X) * (ty - Gear.Y)) then
+ begin
+ dec(RopePoints.Count);
+ Gear.X:=RopePoints.ar[RopePoints.Count].X;
+ Gear.Y:=RopePoints.ar[RopePoints.Count].Y;
+ Gear.Elasticity:= Gear.Elasticity + RopePoints.ar[RopePoints.Count].dLen;
+ Gear.Friction:= Gear.Friction + RopePoints.ar[RopePoints.Count].dLen
+ end
+ end;
+
+Gear.dX:= HHGear.X - Gear.X;
+Gear.dY:= HHGear.Y - Gear.Y;
+HHGear.DirAngle:= arctan(Gear.dY + HHGear.dY, Gear.dX + HHGear.dX);
+cs:= sin(HHGear.DirAngle);
+cc:= cos(HHGear.DirAngle);
+
+HHGear.dX:= HHGear.X;
+HHGear.dY:= HHGear.Y;
+
+if ((Gear.Message and gm_Down) <> 0) and (Gear.Elasticity < Gear.Friction) then
+ if not (TestCollisionXwithGear(HHGear, Sign(Gear.dX))
+ or TestCollisionYwithGear(HHGear, Sign(Gear.dY))) then Gear.Elasticity:= Gear.Elasticity + 0.3;
+
+if ((Gear.Message and gm_Up) <> 0) and (Gear.Elasticity > 30) then
+ if not (TestCollisionXwithGear(HHGear, -Sign(Gear.dX))
+ or TestCollisionYwithGear(HHGear, -Sign(Gear.dY))) then Gear.Elasticity:= Gear.Elasticity - 0.3;
+
+HHGear.X:= Gear.X + cc*Gear.Elasticity;
+HHGear.Y:= Gear.Y + cs*Gear.Elasticity;
+
+HHGear.dX:= HHGear.X - HHGear.dX;
+HHGear.dY:= HHGear.Y - HHGear.dY;
+
+if TestCollisionXwithGear(HHGear, Sign(HHGear.dX)) then
+ HHGear.dX:= -0.9 * HHGear.dX;
+if TestCollisionYwithGear(HHGear, Sign(HHGear.dY)) then
+ HHGear.dY:= -0.9 * HHGear.dY;
+
+if (Gear.Message and gm_Attack) <> 0 then
+ if (Gear.State and gsttmpFlag) <> 0 then DeleteMe else
+else if (Gear.State and gsttmpFlag) = 0 then Gear.State:= Gear.State or gsttmpFlag;
+end;
+
+
+procedure doStepRopeAttach(Gear: PGear);
+var HHGear: PGear;
+ tx, ty, tt: real;
+begin
+Gear.X:= Gear.X + Gear.dX;
+Gear.Y:= Gear.Y + Gear.dY;
+Gear.Elasticity:= Gear.Elasticity + 1.0;
+HHGear:= PHedgehog(Gear.Hedgehog)^.Gear;
+if (HHGear.State and gstFalling) <> 0 then
+ if HHTestCollisionYwithGear(HHGear, 1) then
+ begin
+ HHGear.dY:= 0;
+ CheckHHDamage(HHGear);
+ HHGear.State:= HHGear.State and not (gstFalling or gstHHJumping);
+ end else
+ begin
+ if TestCollisionXwithGear(HHGear, Sign(HHGear.dX)) then HHGear.dX:= 0.0000001 * Sign(HHGear.dX);
+ HHGear.X:= HHGear.X + HHGear.dX;
+ HHGear.Y:= HHGear.Y + HHGear.dY;
+ Gear.X:= Gear.X + HHGear.dX;
+ Gear.Y:= Gear.Y + HHGear.dY;
+ HHGear.dY:= HHGear.dY + cGravity;
+ tt:= Gear.Elasticity;
+ tx:= 0;
+ ty:= 0;
+ while tt > 20 do
+ begin
+ if TestCollisionXwithXYShift(Gear, round(tx), round(ty), Sign(Gear.dX))
+ or TestCollisionYwithXYShift(Gear, round(tx), round(ty), Sign(Gear.dY)) then
+ begin
+ Gear.X:= Gear.X + tx;
+ Gear.Y:= Gear.Y + ty;
+ Gear.Elasticity:= tt;
+ Gear.doStep:= doStepRopeWork;
+ with HHGear^ do State:= State and not gstAttacking;
+ tt:= 0
+ end;
+ tx:= tx - Gear.dX - Gear.dX;
+ ty:= ty - Gear.dY - Gear.dY;
+ tt:= tt - 2.0;
+ end;
+ end;
+CheckCollision(Gear);
+if (Gear.State and gstCollision) <> 0 then
+ begin
+ Gear.doStep:= doStepRopeWork;
+ with HHGear^ do State:= State and not gstAttacking;
+ if Gear.Elasticity < 10 then
+ Gear.Elasticity:= 10000;
+ end;
+
+if (Gear.Elasticity >= Gear.Friction) or ((Gear.Message and gm_Attack) = 0) then
+ begin
+ with PHedgehog(Gear.Hedgehog).Gear^ do
+ begin
+ State:= State and not gstAttacking;
+ Message:= Message and not gm_Attack
+ end;
+ DeleteGear(Gear)
+ end
+end;
+
+procedure doStepRope(Gear: PGear);
+begin
+Gear.doStep:= doStepRopeAttach
+end;
+
+////////////////////////////////////////////////////////////////////////////////
+procedure doStepSmokeTrace(Gear: PGear);
+begin
+inc(Gear.Timer);
+if Gear.Timer > 64 then
+ begin
+ Gear.Timer:= 0;
+ dec(Gear.Tag)
+ end;
+Gear.dX:= Gear.dX + cWindSpeed;
+Gear.X:= Gear.X + Gear.dX;
+if Gear.Tag = 0 then DeleteGear(Gear)
+end;