hedgewars/uGearsHandlersRope.pas
author unc0rr
Sat, 01 Sep 2012 17:11:39 -0400
changeset 7647 e496587db93e
parent 7612 047c6692a2e7
child 7648 796ff8debbbc
permissions -rw-r--r--
Rope fix without hacks.
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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, sDx, sDy: hwFloat;
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    i, 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 8 <> 0 then exit;
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    HHGear := Gear^.Hedgehog^.Gear;
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    HHGear^.dX.QWordValue:= HHGear^.dX.QWordValue shl 3;
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    HHGear^.dY.QWordValue:= HHGear^.dY.QWordValue shl 3;
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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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        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_0128;
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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_0128;
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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 * 64;
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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 * 64 / 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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    if ((Gear^.Message and gmDown) <> 0) and (Gear^.Elasticity < Gear^.Friction) then
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        if not (TestCollisionXwithGear(HHGear, hwSign(ropeDx))
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        or (TestCollisionYwithGear(HHGear, hwSign(ropeDy)) <> 0)) then
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diff changeset
   170
            Gear^.Elasticity := Gear^.Elasticity + _2_4;
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unc0rr
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diff changeset
   171
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unc0rr
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diff changeset
   172
    if ((Gear^.Message and gmUp) <> 0) and (Gear^.Elasticity > _30) then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   173
        if not (TestCollisionXwithGear(HHGear, -hwSign(ropeDx))
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   174
        or (TestCollisionYwithGear(HHGear, -hwSign(ropeDy)) <> 0)) then
e496587db93e Rope fix without hacks.
unc0rr
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diff changeset
   175
            Gear^.Elasticity := Gear^.Elasticity - _2_4;
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unc0rr
parents: 7612
diff changeset
   176
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unc0rr
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diff changeset
   177
    HHGear^.X := Gear^.X + mdX * Gear^.Elasticity;
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unc0rr
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diff changeset
   178
    HHGear^.Y := Gear^.Y + mdY * Gear^.Elasticity;
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unc0rr
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diff changeset
   179
e496587db93e Rope fix without hacks.
unc0rr
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diff changeset
   180
    HHGear^.dX := Gear^.X + mdX * Gear^.Elasticity - tx;
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unc0rr
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diff changeset
   181
    HHGear^.dY := Gear^.Y + mdY * Gear^.Elasticity - ty;
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unc0rr
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diff changeset
   182
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unc0rr
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diff changeset
   183
    sDx:= HHGear^.dX / 8;
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unc0rr
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diff changeset
   184
    sDy:= HHGear^.dY / 8;
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unc0rr
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diff changeset
   185
e496587db93e Rope fix without hacks.
unc0rr
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diff changeset
   186
    HHGear^.X:= tx;
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unc0rr
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diff changeset
   187
    HHGear^.Y:= ty;
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unc0rr
parents: 7612
diff changeset
   188
e496587db93e Rope fix without hacks.
unc0rr
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diff changeset
   189
    i:= 0;
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unc0rr
parents: 7612
diff changeset
   190
    while not ((i = 8)
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   191
        or TestCollisionXwithGear(HHGear, hwSign(HHGear^.dX))
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   192
        or (TestCollisionYwithGear(HHGear, hwSign(HHGear^.dY)) <> 0)) do
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unc0rr
parents: 7612
diff changeset
   193
        begin
e496587db93e Rope fix without hacks.
unc0rr
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diff changeset
   194
        inc(i);
e496587db93e Rope fix without hacks.
unc0rr
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diff changeset
   195
        HHGear^.X:= HHGear^.X + sDx;
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unc0rr
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diff changeset
   196
        HHGear^.Y:= HHGear^.Y + sDy;
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unc0rr
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diff changeset
   197
        end;
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unc0rr
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diff changeset
   198
    ////
e496587db93e Rope fix without hacks.
unc0rr
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diff changeset
   199
e496587db93e Rope fix without hacks.
unc0rr
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diff changeset
   200
e496587db93e Rope fix without hacks.
unc0rr
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diff changeset
   201
    haveDivided := false;
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unc0rr
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diff changeset
   202
    // check whether rope needs dividing
e496587db93e Rope fix without hacks.
unc0rr
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diff changeset
   203
e496587db93e Rope fix without hacks.
unc0rr
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diff changeset
   204
    len := Gear^.Elasticity - _5;
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unc0rr
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diff changeset
   205
    nx := Gear^.X + mdX * len;
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unc0rr
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diff changeset
   206
    ny := Gear^.Y + mdY * len;
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unc0rr
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diff changeset
   207
    tx := mdX * _2_4; // should be the same as increase step
e496587db93e Rope fix without hacks.
unc0rr
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diff changeset
   208
    ty := mdY * _2_4;
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unc0rr
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diff changeset
   209
e496587db93e Rope fix without hacks.
unc0rr
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diff changeset
   210
    while len > _3 do
e496587db93e Rope fix without hacks.
unc0rr
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diff changeset
   211
        begin
e496587db93e Rope fix without hacks.
unc0rr
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diff changeset
   212
        lx := hwRound(nx);
e496587db93e Rope fix without hacks.
unc0rr
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diff changeset
   213
        ly := hwRound(ny);
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unc0rr
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diff changeset
   214
        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
   215
            begin
e496587db93e Rope fix without hacks.
unc0rr
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diff changeset
   216
            ny := _1 / Distance(ropeDx, ropeDy);
e496587db93e Rope fix without hacks.
unc0rr
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diff changeset
   217
            // old rope pos
e496587db93e Rope fix without hacks.
unc0rr
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diff changeset
   218
            nx := ropeDx * ny;
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unc0rr
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diff changeset
   219
            ny := ropeDy * ny;
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unc0rr
parents: 7612
diff changeset
   220
e496587db93e Rope fix without hacks.
unc0rr
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diff changeset
   221
            with RopePoints.ar[RopePoints.Count] do
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   222
                begin
e496587db93e Rope fix without hacks.
unc0rr
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diff changeset
   223
                X := Gear^.X;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   224
                Y := Gear^.Y;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   225
                if RopePoints.Count = 0 then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   226
                    RopePoints.HookAngle := DxDy2Angle(Gear^.dY, Gear^.dX);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   227
                b := (nx * HHGear^.dY) > (ny * HHGear^.dX);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   228
                dLen := len
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   229
                end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   230
                
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   231
            with RopePoints.rounded[RopePoints.Count] do
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   232
                begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   233
                X := hwRound(Gear^.X);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   234
                Y := hwRound(Gear^.Y);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   235
                end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   236
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   237
            Gear^.X := Gear^.X + nx * len;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   238
            Gear^.Y := Gear^.Y + ny * len;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   239
            inc(RopePoints.Count);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   240
            TryDo(RopePoints.Count <= MAXROPEPOINTS, 'Rope points overflow', true);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   241
            Gear^.Elasticity := Gear^.Elasticity - len;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   242
            Gear^.Friction := Gear^.Friction - len;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   243
            haveDivided := true;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   244
            break
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   245
            end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   246
        nx := nx - tx;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   247
        ny := ny - ty;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   248
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   249
        // len := len - _2_4 // should be the same as increase step
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   250
        len.QWordValue := len.QWordValue - _2_4.QWordValue;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   251
        end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   252
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   253
    if not haveDivided then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   254
        if RopePoints.Count > 0 then // check whether the last dividing point could be removed
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   255
            begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   256
            tx := RopePoints.ar[Pred(RopePoints.Count)].X;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   257
            ty := RopePoints.ar[Pred(RopePoints.Count)].Y;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   258
            mdX := tx - Gear^.X;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   259
            mdY := ty - Gear^.Y;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   260
            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
   261
                begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   262
                dec(RopePoints.Count);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   263
                Gear^.X := RopePoints.ar[RopePoints.Count].X;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   264
                Gear^.Y := RopePoints.ar[RopePoints.Count].Y;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   265
                Gear^.Elasticity := Gear^.Elasticity + RopePoints.ar[RopePoints.Count].dLen;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   266
                Gear^.Friction := Gear^.Friction + RopePoints.ar[RopePoints.Count].dLen;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   267
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   268
                // restore hog position
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   269
                len := _1 / Distance(mdX, mdY);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   270
                mdX := mdX * len;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   271
                mdY := mdY * len;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   272
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   273
                HHGear^.X := Gear^.X - mdX * Gear^.Elasticity;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   274
                HHGear^.Y := Gear^.Y - mdY * Gear^.Elasticity;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   275
                end
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   276
            end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   277
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   278
    haveCollision := false;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   279
    if TestCollisionXwithGear(HHGear, hwSign(HHGear^.dX)) then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   280
        begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   281
        HHGear^.dX := -_0_6 * HHGear^.dX;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   282
        haveCollision := true
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   283
        end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   284
    if TestCollisionYwithGear(HHGear, hwSign(HHGear^.dY)) <> 0 then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   285
        begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   286
        HHGear^.dY := -_0_6 * HHGear^.dY;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   287
        haveCollision := true
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   288
        end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   289
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   290
    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
   291
        begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   292
        HHGear^.dX := SignAs(hwAbs(HHGear^.dX) + _1_6, HHGear^.dX);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   293
        HHGear^.dY := SignAs(hwAbs(HHGear^.dY) + _1_6, HHGear^.dY)
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   294
        end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   295
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   296
    len := hwSqr(HHGear^.dX) + hwSqr(HHGear^.dY);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   297
    if len > _49 then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   298
        begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   299
        len := _7 / hwSqrt(len);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   300
        HHGear^.dX := HHGear^.dX * len;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   301
        HHGear^.dY := HHGear^.dY * len;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   302
        end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   303
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   304
    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
   305
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   306
    if not haveCollision then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   307
        begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   308
        // backup gear location
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   309
        tx:= Gear^.X;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   310
        ty:= Gear^.Y;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   311
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   312
        if RopePoints.Count > 0 then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   313
            begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   314
            // set gear location to the remote end of the rope, the attachment point
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   315
            Gear^.X:= RopePoints.ar[0].X;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   316
            Gear^.Y:= RopePoints.ar[0].Y;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   317
            end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   318
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   319
        CheckCollision(Gear);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   320
        // if we haven't found any collision yet then check the other side too
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   321
        if (Gear^.State and gstCollision) = 0 then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   322
            begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   323
            Gear^.dX.isNegative:= not Gear^.dX.isNegative;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   324
            Gear^.dY.isNegative:= not Gear^.dY.isNegative;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   325
            CheckCollision(Gear);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   326
            Gear^.dX.isNegative:= not Gear^.dX.isNegative;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   327
            Gear^.dY.isNegative:= not Gear^.dY.isNegative;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   328
            end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   329
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   330
        haveCollision:= (Gear^.State and gstCollision) <> 0;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   331
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   332
        // restore gear location
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   333
        Gear^.X:= tx;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   334
        Gear^.Y:= ty;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   335
        end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   336
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   337
    // if the attack key is pressed, lose rope contact as well
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   338
    if (Gear^.Message and gmAttack) <> 0 then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   339
        haveCollision:= false;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   340
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   341
    if not haveCollision then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   342
        begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   343
        if (Gear^.State and gsttmpFlag) <> 0 then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   344
            begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   345
            PlaySound(sndRopeRelease);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   346
            if Gear^.Hedgehog^.CurAmmoType <> amParachute then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   347
                RopeWaitCollision(Gear, HHGear)
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   348
            else
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   349
                RopeDeleteMe(Gear, HHGear)
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   350
            end
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   351
        end
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   352
    else
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   353
        if (Gear^.State and gsttmpFlag) = 0 then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   354
            Gear^.State := Gear^.State or gsttmpFlag;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   355
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   356
    HHGear^.dX.QWordValue:= HHGear^.dX.QWordValue shr 3;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   357
    HHGear^.dY.QWordValue:= HHGear^.dY.QWordValue shr 3;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   358
end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   359
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   360
procedure RopeRemoveFromAmmo(Gear, HHGear: PGear);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   361
begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   362
    if (Gear^.State and gstAttacked) = 0 then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   363
        begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   364
        OnUsedAmmo(HHGear^.Hedgehog^);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   365
        Gear^.State := Gear^.State or gstAttacked
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   366
        end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   367
    ApplyAmmoChanges(HHGear^.Hedgehog^)
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   368
end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   369
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   370
procedure doStepRopeAttach(Gear: PGear);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   371
var 
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   372
    HHGear: PGear;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   373
    tx, ty, tt: hwFloat;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   374
begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   375
    Gear^.X := Gear^.X - Gear^.dX;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   376
    Gear^.Y := Gear^.Y - Gear^.dY;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   377
    Gear^.Elasticity := Gear^.Elasticity + _1;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   378
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   379
    HHGear := Gear^.Hedgehog^.Gear;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   380
    DeleteCI(HHGear);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   381
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   382
    if (HHGear^.State and gstMoving) <> 0 then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   383
        begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   384
        if TestCollisionXwithGear(HHGear, hwSign(HHGear^.dX)) then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   385
            SetLittle(HHGear^.dX);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   386
        if HHGear^.dY.isNegative and (TestCollisionYwithGear(HHGear, -1) <> 0) then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   387
            HHGear^.dY := _0;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   388
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   389
        HHGear^.X := HHGear^.X + HHGear^.dX;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   390
        Gear^.X := Gear^.X + HHGear^.dX;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   391
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   392
        if TestCollisionYwithGear(HHGear, 1) <> 0 then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   393
            begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   394
            CheckHHDamage(HHGear);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   395
            HHGear^.dY := _0
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   396
            //HHGear^.State:= HHGear^.State and (not (gstHHJumping or gstHHHJump));
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   397
            end
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   398
        else
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   399
            begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   400
            HHGear^.Y := HHGear^.Y + HHGear^.dY;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   401
            Gear^.Y := Gear^.Y + HHGear^.dY;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   402
            HHGear^.dY := HHGear^.dY + cGravity;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   403
            if (GameFlags and gfMoreWind) <> 0 then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   404
                HHGear^.dX := HHGear^.dX + cWindSpeed / HHGear^.Density
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   405
            end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   406
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   407
        tt := Gear^.Elasticity;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   408
        tx := _0;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   409
        ty := _0;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   410
        while tt > _20 do
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   411
            begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   412
            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
   413
                begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   414
                Gear^.X := Gear^.X + tx;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   415
                Gear^.Y := Gear^.Y + ty;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   416
                Gear^.Elasticity := tt;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   417
                Gear^.doStep := @doStepRopeWork;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   418
                PlaySound(sndRopeAttach);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   419
                with HHGear^ do
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   420
                    begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   421
                    State := State and (not (gstAttacking or gstHHJumping or gstHHHJump));
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   422
                    Message := Message and (not gmAttack)
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   423
                    end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   424
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   425
                RopeRemoveFromAmmo(Gear, HHGear);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   426
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   427
                tt := _0;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   428
                exit
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   429
                end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   430
            tx := tx + Gear^.dX + Gear^.dX;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   431
            ty := ty + Gear^.dY + Gear^.dY;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   432
            tt := tt - _2;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   433
            end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   434
        end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   435
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   436
    CheckCollision(Gear);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   437
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   438
    if (Gear^.State and gstCollision) <> 0 then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   439
        if Gear^.Elasticity < _10 then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   440
            Gear^.Elasticity := _10000
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   441
    else
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   442
        begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   443
        Gear^.doStep := @doStepRopeWork;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   444
        PlaySound(sndRopeAttach);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   445
        with HHGear^ do
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   446
            begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   447
            State := State and (not (gstAttacking or gstHHJumping or gstHHHJump));
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   448
            Message := Message and (not gmAttack)
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   449
            end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   450
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   451
        RopeRemoveFromAmmo(Gear, HHGear);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   452
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   453
        exit
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   454
        end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   455
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   456
    if (Gear^.Elasticity > Gear^.Friction)
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   457
        or ((Gear^.Message and gmAttack) = 0)
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   458
        or ((HHGear^.State and gstHHDriven) = 0)
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   459
        or (HHGear^.Damage > 0) then
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   460
            begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   461
            with Gear^.Hedgehog^.Gear^ do
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   462
                begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   463
                State := State and (not gstAttacking);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   464
                Message := Message and (not gmAttack)
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   465
                end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   466
        DeleteGear(Gear);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   467
        exit;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   468
        end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   469
    if CheckGearDrowning(HHGear) then DeleteGear(Gear)
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   470
end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   471
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   472
procedure doStepRope(Gear: PGear);
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   473
begin
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   474
    Gear^.dX := - Gear^.dX;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   475
    Gear^.dY := - Gear^.dY;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   476
    Gear^.doStep := @doStepRopeAttach;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   477
    PlaySound(sndRopeShot)
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   478
end;
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   479
e496587db93e Rope fix without hacks.
unc0rr
parents: 7612
diff changeset
   480
end.