hedgewars/uGearsHandlersRope.pas
author nemo
Mon, 03 Sep 2012 12:35:51 -0400
changeset 7657 347e18494fb9
parent 7656 e7bef1a4fda7
child 7658 70a874a26414
permissions -rw-r--r--
Let's try *4 instead. Not nearly as much of a win, but might be usable.
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(*
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 * Hedgewars, a free turn based strategy game
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 * Copyright (c) 2004-2012 Andrey Korotaev <unC0Rr@gmail.com>
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 *
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 * This program is free software; you can redistribute it and/or modify
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 * it under the terms of the GNU General Public License as published by
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 * the Free Software Foundation; version 2 of the License
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 *
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 * This program is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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 * GNU General Public License for more details.
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 *
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 * You should have received a copy of the GNU General Public License
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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 *)
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{$INCLUDE "options.inc"}
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unit uGearsHandlersRope;
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interface
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uses uTypes;
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procedure doStepRope(Gear: PGear);
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implementation
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uses uConsts, uFloat, uCollisions, uVariables, uGearsList, uSound, uGearsUtils,
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    uAmmos, uDebug, uUtils, uGearsHedgehog, uGearsRender;
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procedure doStepRopeAfterAttack(Gear: PGear);
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var 
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    HHGear: PGear;
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begin
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    HHGear := Gear^.Hedgehog^.Gear;
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    if ((HHGear^.State and gstHHDriven) = 0)
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    or (CheckGearDrowning(HHGear))
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    or (TestCollisionYwithGear(HHGear, 1) <> 0) then
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        begin
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        DeleteGear(Gear);
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        isCursorVisible := false;
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        ApplyAmmoChanges(HHGear^.Hedgehog^);
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        exit
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        end;
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    HedgehogChAngle(HHGear);
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    if TestCollisionXwithGear(HHGear, hwSign(HHGear^.dX)) then
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        SetLittle(HHGear^.dX);
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    if HHGear^.dY.isNegative and (TestCollisionYwithGear(HHGear, -1) <> 0) then
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        HHGear^.dY := _0;
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    HHGear^.X := HHGear^.X + HHGear^.dX;
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    HHGear^.Y := HHGear^.Y + HHGear^.dY;
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    HHGear^.dY := HHGear^.dY + cGravity;
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    if (GameFlags and gfMoreWind) <> 0 then
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        HHGear^.dX := HHGear^.dX + cWindSpeed / HHGear^.Density;
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    if (Gear^.Message and gmAttack) <> 0 then
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        begin
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        Gear^.X := HHGear^.X;
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        Gear^.Y := HHGear^.Y;
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        ApplyAngleBounds(Gear^.Hedgehog^, amRope);
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        Gear^.dX := SignAs(AngleSin(HHGear^.Angle), HHGear^.dX);
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        Gear^.dY := -AngleCos(HHGear^.Angle);
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        Gear^.Friction := _4_5 * cRopePercent;
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        Gear^.Elasticity := _0;
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        Gear^.State := Gear^.State and (not gsttmpflag);
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        Gear^.doStep := @doStepRope;
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        end
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end;
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procedure RopeDeleteMe(Gear, HHGear: PGear);
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begin
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    with HHGear^ do
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        begin
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        Message := Message and (not gmAttack);
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        State := (State or gstMoving) and (not gstWinner);
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        end;
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    DeleteGear(Gear)
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end;
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procedure RopeWaitCollision(Gear, HHGear: PGear);
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begin
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    with HHGear^ do
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        begin
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        Message := Message and (not gmAttack);
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        State := State or gstMoving;
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        end;
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    RopePoints.Count := 0;
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    Gear^.Elasticity := _0;
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    Gear^.doStep := @doStepRopeAfterAttack
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end;
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procedure doStepRopeWork(Gear: PGear);
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var 
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    HHGear: PGear;
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    len, tx, ty, nx, ny, ropeDx, ropeDy, mdX, mdY: hwFloat;
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    lx, ly, cd: LongInt;
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    haveCollision,
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    haveDivided: boolean;
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begin
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    if GameTicks mod 4 <> 0 then exit;
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    HHGear := Gear^.Hedgehog^.Gear;
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    if ((HHGear^.State and gstHHDriven) = 0)
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       or (CheckGearDrowning(HHGear)) or (Gear^.PortalCounter <> 0) then
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        begin
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        HHGear^.dX.QWordValue:= HHGear^.dX.QWordValue shr 2;
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        HHGear^.dY.QWordValue:= HHGear^.dY.QWordValue shr 2;
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        PlaySound(sndRopeRelease);
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        RopeDeleteMe(Gear, HHGear);
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        exit
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        end;
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    if (Gear^.Message and gmLeft  <> 0) and (not TestCollisionXwithGear(HHGear, -1)) then
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        HHGear^.dX := HHGear^.dX - _0_0032;
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    if (Gear^.Message and gmRight <> 0) and (not TestCollisionXwithGear(HHGear,  1)) then
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        HHGear^.dX := HHGear^.dX + _0_0032;
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    // vector between hedgehog and rope attaching point
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    ropeDx := HHGear^.X - Gear^.X;
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    ropeDy := HHGear^.Y - Gear^.Y;
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    if TestCollisionYwithGear(HHGear, 1) = 0 then
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        begin
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        // depending on the rope vector we know which X-side to check for collision
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        // in order to find out if the hog can still be moved by gravity
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        if ropeDx.isNegative = RopeDy.IsNegative then
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            cd:= -1
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        else
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            cd:= 1;
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        // apply gravity if there is no obstacle
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        if not TestCollisionXwithGear(HHGear, cd) then
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            HHGear^.dY := HHGear^.dY + cGravity * 16;
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        if (GameFlags and gfMoreWind) <> 0 then
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            // apply wind if there's no obstacle
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            if not TestCollisionXwithGear(HHGear, hwSign(cWindSpeed)) then
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                HHGear^.dX := HHGear^.dX + cWindSpeed * 16 / HHGear^.Density;
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        end;
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    mdX := ropeDx + HHGear^.dX;
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    mdY := ropeDy + HHGear^.dY;
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    len := _1 / Distance(mdX, mdY);
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    // rope vector plus hedgehog direction vector normalized
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    mdX := mdX * len;
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    mdY := mdY * len;
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    // for visual purposes only
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    Gear^.dX := mdX;
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    Gear^.dY := mdY;
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    /////
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    tx := HHGear^.X;
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    ty := HHGear^.Y;
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parents: 7612
diff changeset
   166
    if ((Gear^.Message and gmDown) <> 0) and (Gear^.Elasticity < Gear^.Friction) then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   167
        if not (TestCollisionXwithGear(HHGear, hwSign(ropeDx))
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   168
        or (TestCollisionYwithGear(HHGear, hwSign(ropeDy)) <> 0)) then
7657
347e18494fb9 Let's try *4 instead. Not nearly as much of a win, but might be usable.
nemo
parents: 7656
diff changeset
   169
            Gear^.Elasticity := Gear^.Elasticity + _1_2;
7647
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   170
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   171
    if ((Gear^.Message and gmUp) <> 0) and (Gear^.Elasticity > _30) then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   172
        if not (TestCollisionXwithGear(HHGear, -hwSign(ropeDx))
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   173
        or (TestCollisionYwithGear(HHGear, -hwSign(ropeDy)) <> 0)) then
7657
347e18494fb9 Let's try *4 instead. Not nearly as much of a win, but might be usable.
nemo
parents: 7656
diff changeset
   174
            Gear^.Elasticity := Gear^.Elasticity - _1_2;
7647
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   175
e496587db93e Rope fix without hacks.
unc0rr
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diff changeset
   176
    HHGear^.X := Gear^.X + mdX * Gear^.Elasticity;
e496587db93e Rope fix without hacks.
unc0rr
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diff changeset
   177
    HHGear^.Y := Gear^.Y + mdY * Gear^.Elasticity;
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unc0rr
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diff changeset
   178
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347e18494fb9 Let's try *4 instead. Not nearly as much of a win, but might be usable.
nemo
parents: 7656
diff changeset
   179
    HHGear^.dX := HHGear^.X - tx;
347e18494fb9 Let's try *4 instead. Not nearly as much of a win, but might be usable.
nemo
parents: 7656
diff changeset
   180
    HHGear^.dY := HHGear^.Y - ty;
7647
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   181
    ////
e496587db93e Rope fix without hacks.
unc0rr
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diff changeset
   182
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   183
e496587db93e Rope fix without hacks.
unc0rr
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diff changeset
   184
    haveDivided := false;
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unc0rr
parents: 7612
diff changeset
   185
    // check whether rope needs dividing
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   186
e496587db93e Rope fix without hacks.
unc0rr
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diff changeset
   187
    len := Gear^.Elasticity - _5;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   188
    nx := Gear^.X + mdX * len;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   189
    ny := Gear^.Y + mdY * len;
7657
347e18494fb9 Let's try *4 instead. Not nearly as much of a win, but might be usable.
nemo
parents: 7656
diff changeset
   190
    tx := mdX * _1_2; // should be the same as increase step
347e18494fb9 Let's try *4 instead. Not nearly as much of a win, but might be usable.
nemo
parents: 7656
diff changeset
   191
    ty := mdY * _1_2;
7647
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   192
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   193
    while len > _3 do
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   194
        begin
e496587db93e Rope fix without hacks.
unc0rr
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diff changeset
   195
        lx := hwRound(nx);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   196
        ly := hwRound(ny);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   197
        if ((ly and LAND_HEIGHT_MASK) = 0) and ((lx and LAND_WIDTH_MASK) = 0) and ((Land[ly, lx] and $FF00) <> 0) then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   198
            begin
e496587db93e Rope fix without hacks.
unc0rr
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diff changeset
   199
            ny := _1 / Distance(ropeDx, ropeDy);
e496587db93e Rope fix without hacks.
unc0rr
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diff changeset
   200
            // old rope pos
e496587db93e Rope fix without hacks.
unc0rr
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diff changeset
   201
            nx := ropeDx * ny;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   202
            ny := ropeDy * ny;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   203
e496587db93e Rope fix without hacks.
unc0rr
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diff changeset
   204
            with RopePoints.ar[RopePoints.Count] do
e496587db93e Rope fix without hacks.
unc0rr
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diff changeset
   205
                begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   206
                X := Gear^.X;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   207
                Y := Gear^.Y;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   208
                if RopePoints.Count = 0 then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   209
                    RopePoints.HookAngle := DxDy2Angle(Gear^.dY, Gear^.dX);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   210
                b := (nx * HHGear^.dY) > (ny * HHGear^.dX);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   211
                dLen := len
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   212
                end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   213
                
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   214
            with RopePoints.rounded[RopePoints.Count] do
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   215
                begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   216
                X := hwRound(Gear^.X);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   217
                Y := hwRound(Gear^.Y);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   218
                end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   219
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   220
            Gear^.X := Gear^.X + nx * len;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   221
            Gear^.Y := Gear^.Y + ny * len;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   222
            inc(RopePoints.Count);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   223
            TryDo(RopePoints.Count <= MAXROPEPOINTS, 'Rope points overflow', true);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   224
            Gear^.Elasticity := Gear^.Elasticity - len;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   225
            Gear^.Friction := Gear^.Friction - len;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   226
            haveDivided := true;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   227
            break
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   228
            end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   229
        nx := nx - tx;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   230
        ny := ny - ty;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   231
7657
347e18494fb9 Let's try *4 instead. Not nearly as much of a win, but might be usable.
nemo
parents: 7656
diff changeset
   232
        // len := len - _1_2 // should be the same as increase step
347e18494fb9 Let's try *4 instead. Not nearly as much of a win, but might be usable.
nemo
parents: 7656
diff changeset
   233
        len.QWordValue := len.QWordValue - _1_2.QWordValue;
7647
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   234
        end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   235
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   236
    if not haveDivided then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   237
        if RopePoints.Count > 0 then // check whether the last dividing point could be removed
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   238
            begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   239
            tx := RopePoints.ar[Pred(RopePoints.Count)].X;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   240
            ty := RopePoints.ar[Pred(RopePoints.Count)].Y;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   241
            mdX := tx - Gear^.X;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   242
            mdY := ty - Gear^.Y;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   243
            if RopePoints.ar[Pred(RopePoints.Count)].b xor (mdX * (ty - HHGear^.Y) > (tx - HHGear^.X) * mdY) then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   244
                begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   245
                dec(RopePoints.Count);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   246
                Gear^.X := RopePoints.ar[RopePoints.Count].X;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   247
                Gear^.Y := RopePoints.ar[RopePoints.Count].Y;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   248
                Gear^.Elasticity := Gear^.Elasticity + RopePoints.ar[RopePoints.Count].dLen;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   249
                Gear^.Friction := Gear^.Friction + RopePoints.ar[RopePoints.Count].dLen;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   250
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   251
                // restore hog position
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   252
                len := _1 / Distance(mdX, mdY);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   253
                mdX := mdX * len;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   254
                mdY := mdY * len;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   255
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   256
                HHGear^.X := Gear^.X - mdX * Gear^.Elasticity;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   257
                HHGear^.Y := Gear^.Y - mdY * Gear^.Elasticity;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   258
                end
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   259
            end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   260
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   261
    haveCollision := false;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   262
    if TestCollisionXwithGear(HHGear, hwSign(HHGear^.dX)) then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   263
        begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   264
        HHGear^.dX := -_0_6 * HHGear^.dX;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   265
        haveCollision := true
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   266
        end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   267
    if TestCollisionYwithGear(HHGear, hwSign(HHGear^.dY)) <> 0 then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   268
        begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   269
        HHGear^.dY := -_0_6 * HHGear^.dY;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   270
        haveCollision := true
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   271
        end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   272
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   273
    if haveCollision and (Gear^.Message and (gmLeft or gmRight) <> 0) and (Gear^.Message and (gmUp or gmDown) <> 0) then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   274
        begin
7657
347e18494fb9 Let's try *4 instead. Not nearly as much of a win, but might be usable.
nemo
parents: 7656
diff changeset
   275
        HHGear^.dX := SignAs(hwAbs(HHGear^.dX) + _0_8, HHGear^.dX);
347e18494fb9 Let's try *4 instead. Not nearly as much of a win, but might be usable.
nemo
parents: 7656
diff changeset
   276
        HHGear^.dY := SignAs(hwAbs(HHGear^.dY) + _0_8, HHGear^.dY)
7647
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   277
        end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   278
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   279
    len := hwSqr(HHGear^.dX) + hwSqr(HHGear^.dY);
7657
347e18494fb9 Let's try *4 instead. Not nearly as much of a win, but might be usable.
nemo
parents: 7656
diff changeset
   280
    if len > _10 then
7647
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   281
        begin
7657
347e18494fb9 Let's try *4 instead. Not nearly as much of a win, but might be usable.
nemo
parents: 7656
diff changeset
   282
        len := _3_2 / hwSqrt(len);
7647
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   283
        HHGear^.dX := HHGear^.dX * len;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   284
        HHGear^.dY := HHGear^.dY * len;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   285
        end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   286
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   287
    haveCollision:= ((hwRound(Gear^.Y) and LAND_HEIGHT_MASK) = 0) and ((hwRound(Gear^.X) and LAND_WIDTH_MASK) = 0) and ((Land[hwRound(Gear^.Y), hwRound(Gear^.X)]) <> 0);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   288
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   289
    if not haveCollision then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   290
        begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   291
        // backup gear location
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   292
        tx:= Gear^.X;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   293
        ty:= Gear^.Y;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   294
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   295
        if RopePoints.Count > 0 then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   296
            begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   297
            // set gear location to the remote end of the rope, the attachment point
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   298
            Gear^.X:= RopePoints.ar[0].X;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   299
            Gear^.Y:= RopePoints.ar[0].Y;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   300
            end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   301
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   302
        CheckCollision(Gear);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   303
        // if we haven't found any collision yet then check the other side too
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   304
        if (Gear^.State and gstCollision) = 0 then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   305
            begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   306
            Gear^.dX.isNegative:= not Gear^.dX.isNegative;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   307
            Gear^.dY.isNegative:= not Gear^.dY.isNegative;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   308
            CheckCollision(Gear);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   309
            Gear^.dX.isNegative:= not Gear^.dX.isNegative;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   310
            Gear^.dY.isNegative:= not Gear^.dY.isNegative;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   311
            end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   312
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   313
        haveCollision:= (Gear^.State and gstCollision) <> 0;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   314
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   315
        // restore gear location
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   316
        Gear^.X:= tx;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   317
        Gear^.Y:= ty;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   318
        end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   319
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   320
    // if the attack key is pressed, lose rope contact as well
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   321
    if (Gear^.Message and gmAttack) <> 0 then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   322
        haveCollision:= false;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   323
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   324
    if not haveCollision then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   325
        begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   326
        if (Gear^.State and gsttmpFlag) <> 0 then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   327
            begin
7657
347e18494fb9 Let's try *4 instead. Not nearly as much of a win, but might be usable.
nemo
parents: 7656
diff changeset
   328
            HHGear^.dX.QWordValue:= HHGear^.dX.QWordValue shr 2;
347e18494fb9 Let's try *4 instead. Not nearly as much of a win, but might be usable.
nemo
parents: 7656
diff changeset
   329
            HHGear^.dY.QWordValue:= HHGear^.dY.QWordValue shr 2;
347e18494fb9 Let's try *4 instead. Not nearly as much of a win, but might be usable.
nemo
parents: 7656
diff changeset
   330
            
7647
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   331
            PlaySound(sndRopeRelease);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   332
            if Gear^.Hedgehog^.CurAmmoType <> amParachute then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   333
                RopeWaitCollision(Gear, HHGear)
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   334
            else
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   335
                RopeDeleteMe(Gear, HHGear)
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   336
            end
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   337
        end
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   338
    else
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   339
        if (Gear^.State and gsttmpFlag) = 0 then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   340
            Gear^.State := Gear^.State or gsttmpFlag;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   341
end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   342
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   343
procedure RopeRemoveFromAmmo(Gear, HHGear: PGear);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   344
begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   345
    if (Gear^.State and gstAttacked) = 0 then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   346
        begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   347
        OnUsedAmmo(HHGear^.Hedgehog^);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   348
        Gear^.State := Gear^.State or gstAttacked
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   349
        end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   350
    ApplyAmmoChanges(HHGear^.Hedgehog^)
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   351
end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   352
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   353
procedure doStepRopeAttach(Gear: PGear);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   354
var 
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   355
    HHGear: PGear;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   356
    tx, ty, tt: hwFloat;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   357
begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   358
    Gear^.X := Gear^.X - Gear^.dX;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   359
    Gear^.Y := Gear^.Y - Gear^.dY;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   360
    Gear^.Elasticity := Gear^.Elasticity + _1;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   361
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   362
    HHGear := Gear^.Hedgehog^.Gear;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   363
    DeleteCI(HHGear);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   364
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   365
    if (HHGear^.State and gstMoving) <> 0 then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   366
        begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   367
        if TestCollisionXwithGear(HHGear, hwSign(HHGear^.dX)) then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   368
            SetLittle(HHGear^.dX);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   369
        if HHGear^.dY.isNegative and (TestCollisionYwithGear(HHGear, -1) <> 0) then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   370
            HHGear^.dY := _0;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   371
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   372
        HHGear^.X := HHGear^.X + HHGear^.dX;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   373
        Gear^.X := Gear^.X + HHGear^.dX;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   374
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   375
        if TestCollisionYwithGear(HHGear, 1) <> 0 then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   376
            begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   377
            CheckHHDamage(HHGear);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   378
            HHGear^.dY := _0
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   379
            //HHGear^.State:= HHGear^.State and (not (gstHHJumping or gstHHHJump));
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   380
            end
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   381
        else
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   382
            begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   383
            HHGear^.Y := HHGear^.Y + HHGear^.dY;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   384
            Gear^.Y := Gear^.Y + HHGear^.dY;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   385
            HHGear^.dY := HHGear^.dY + cGravity;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   386
            if (GameFlags and gfMoreWind) <> 0 then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   387
                HHGear^.dX := HHGear^.dX + cWindSpeed / HHGear^.Density
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   388
            end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   389
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   390
        tt := Gear^.Elasticity;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   391
        tx := _0;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   392
        ty := _0;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   393
        while tt > _20 do
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   394
            begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   395
            if ((hwRound(Gear^.Y+ty) and LAND_HEIGHT_MASK) = 0) and ((hwRound(Gear^.X+tx) and LAND_WIDTH_MASK) = 0) and ((Land[hwRound(Gear^.Y+ty), hwRound(Gear^.X+tx)] and $FF00) <> 0) then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   396
                begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   397
                Gear^.X := Gear^.X + tx;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   398
                Gear^.Y := Gear^.Y + ty;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   399
                Gear^.Elasticity := tt;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   400
                Gear^.doStep := @doStepRopeWork;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   401
                PlaySound(sndRopeAttach);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   402
                with HHGear^ do
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   403
                    begin
7657
347e18494fb9 Let's try *4 instead. Not nearly as much of a win, but might be usable.
nemo
parents: 7656
diff changeset
   404
                    dX.QWordValue:= dX.QWordValue shl 2;
347e18494fb9 Let's try *4 instead. Not nearly as much of a win, but might be usable.
nemo
parents: 7656
diff changeset
   405
                    dY.QWordValue:= dY.QWordValue shl 2;
7647
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   406
                    State := State and (not (gstAttacking or gstHHJumping or gstHHHJump));
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   407
                    Message := Message and (not gmAttack)
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   408
                    end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   409
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   410
                RopeRemoveFromAmmo(Gear, HHGear);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   411
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   412
                tt := _0;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   413
                exit
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   414
                end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   415
            tx := tx + Gear^.dX + Gear^.dX;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   416
            ty := ty + Gear^.dY + Gear^.dY;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   417
            tt := tt - _2;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   418
            end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   419
        end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   420
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   421
    CheckCollision(Gear);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   422
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   423
    if (Gear^.State and gstCollision) <> 0 then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   424
        if Gear^.Elasticity < _10 then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   425
            Gear^.Elasticity := _10000
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   426
    else
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   427
        begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   428
        Gear^.doStep := @doStepRopeWork;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   429
        PlaySound(sndRopeAttach);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   430
        with HHGear^ do
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   431
            begin
7657
347e18494fb9 Let's try *4 instead. Not nearly as much of a win, but might be usable.
nemo
parents: 7656
diff changeset
   432
            dX.QWordValue:= dX.QWordValue shl 2;
347e18494fb9 Let's try *4 instead. Not nearly as much of a win, but might be usable.
nemo
parents: 7656
diff changeset
   433
            dY.QWordValue:= dY.QWordValue shl 2;
7647
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   434
            State := State and (not (gstAttacking or gstHHJumping or gstHHHJump));
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   435
            Message := Message and (not gmAttack)
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   436
            end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   437
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   438
        RopeRemoveFromAmmo(Gear, HHGear);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   439
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   440
        exit
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   441
        end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   442
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   443
    if (Gear^.Elasticity > Gear^.Friction)
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   444
        or ((Gear^.Message and gmAttack) = 0)
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   445
        or ((HHGear^.State and gstHHDriven) = 0)
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   446
        or (HHGear^.Damage > 0) then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   447
            begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   448
            with Gear^.Hedgehog^.Gear^ do
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   449
                begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   450
                State := State and (not gstAttacking);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   451
                Message := Message and (not gmAttack)
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   452
                end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   453
        DeleteGear(Gear);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   454
        exit;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   455
        end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   456
    if CheckGearDrowning(HHGear) then DeleteGear(Gear)
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   457
end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   458
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   459
procedure doStepRope(Gear: PGear);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   460
begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   461
    Gear^.dX := - Gear^.dX;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   462
    Gear^.dY := - Gear^.dY;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   463
    Gear^.doStep := @doStepRopeAttach;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   464
    PlaySound(sndRopeShot)
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   465
end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   466
7657
347e18494fb9 Let's try *4 instead. Not nearly as much of a win, but might be usable.
nemo
parents: 7656
diff changeset
   467
end.