hedgewars/uGearsHandlersRope.pas
author nemo
Fri, 26 Sep 2014 22:20:12 -0400
changeset 10413 afd746a538ef
parent 10108 c68cf030eded
child 10680 4a4a82686e91
child 10681 474d418a34c5
permissions -rw-r--r--
climb home training/multiplayer
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(*
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 * Hedgewars, a free turn based strategy game
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 * Copyright (c) 2004-2014 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  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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    tX:     hwFloat;
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begin
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    HHGear := Gear^.Hedgehog^.Gear;
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    tX:= HHGear^.X;
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    if WorldWrap(HHGear) and (WorldEdge = weWrap) and
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       ((TestCollisionXwithGear(HHGear, 1) <> 0) or (TestCollisionXwithGear(HHGear, -1) <> 0))  then
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        begin
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        HHGear^.X:= tX;
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        HHGear^.dX.isNegative:= hwRound(tX) > LongInt(leftX) + HHGear^.Radius * 2
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        end;
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    if (HHGear^.Hedgehog^.CurAmmoType = amParachute) and (HHGear^.dY > _0_39) then
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        begin
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        DeleteGear(Gear);
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        ApplyAmmoChanges(HHGear^.Hedgehog^);
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        HHGear^.Message:= HHGear^.Message or gmLJump;
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        exit
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        end;
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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)) <> 0 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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    wrongSide: 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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    tX:= HHGear^.X;
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    if WorldWrap(HHGear) and (WorldEdge = weWrap) and
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       ((TestCollisionXwithGear(HHGear, 1) <> 0) or (TestCollisionXwithGear(HHGear, -1) <> 0))  then
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        begin
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        PlaySound(sndRopeRelease);
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        RopeDeleteMe(Gear, HHGear);
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        HHGear^.X:= tX;
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        HHGear^.dX.isNegative:= hwRound(tX) > LongInt(leftX) + HHGear^.Radius * 2;
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        exit
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        end;
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    tX:= HHGear^.X;
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    if ((HHGear^.State and gstHHDriven) = 0) or
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        (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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    HHGear^.dX.QWordValue:= HHGear^.dX.QWordValue shl 2;
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    HHGear^.dY.QWordValue:= HHGear^.dY.QWordValue shl 2;
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    if (Gear^.Message and gmLeft  <> 0) and (TestCollisionXwithGear(HHGear, -1) = 0) then
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        HHGear^.dX := HHGear^.dX - _0_0032;
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    if (Gear^.Message and gmRight <> 0) and (TestCollisionXwithGear(HHGear,  1) = 0) 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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   159
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   160
    if TestCollisionYwithXYShift(HHGear, 0, 1, 1) = 0 then
7660
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   161
        begin
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   162
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   163
        // depending on the rope vector we know which X-side to check for collision
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   164
        // in order to find out if the hog can still be moved by gravity
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   165
        if ropeDx.isNegative = RopeDy.IsNegative then
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   166
            cd:= -1
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   167
        else
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   168
            cd:= 1;
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   169
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   170
        // apply gravity if there is no obstacle
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   171
        if TestCollisionXwithXYShift(HHGear, _2*cd, 0, cd, true) = 0 then
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   172
            HHGear^.dY := HHGear^.dY + cGravity * 16;
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   173
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   174
        if (GameFlags and gfMoreWind) <> 0 then
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   175
            // apply wind if there's no obstacle
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   176
            if TestCollisionXwithGear(HHGear, hwSign(cWindSpeed)) = 0 then
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   177
                HHGear^.dX := HHGear^.dX + cWindSpeed * 16 / HHGear^.Density;
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   178
        end;
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   179
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   180
    mdX := ropeDx + HHGear^.dX;
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   181
    mdY := ropeDy + HHGear^.dY;
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   182
    len := _1 / Distance(mdX, mdY);
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   183
    // rope vector plus hedgehog direction vector normalized
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   184
    mdX := mdX * len;
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   185
    mdY := mdY * len;
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   186
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   187
    // for visual purposes only
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   188
    Gear^.dX := mdX;
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   189
    Gear^.dY := mdY;
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   190
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   191
    /////
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   192
    tx := HHGear^.X;
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   193
    ty := HHGear^.Y;
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   194
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   195
    if ((Gear^.Message and gmDown) <> 0) and (Gear^.Elasticity < Gear^.Friction) then
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   196
        if not ((TestCollisionXwithXYShift(HHGear, _2*hwSign(ropeDx), 0, hwSign(ropeDx), true) <> 0)
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diff changeset
   197
        or ((ropeDy.QWordValue <> 0) and (TestCollisionYwithXYShift(HHGear, 0, 1*hwSign(ropeDy), hwSign(ropeDy)) <> 0))) then
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   198
            Gear^.Elasticity := Gear^.Elasticity + _1_2;
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   199
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   200
    if ((Gear^.Message and gmUp) <> 0) and (Gear^.Elasticity > _30) then
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diff changeset
   201
        if not ((TestCollisionXwithXYShift(HHGear, -_2*hwSign(ropeDx), 0, -hwSign(ropeDx), true) <> 0)
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diff changeset
   202
        or ((ropeDy.QWordValue <> 0) and (TestCollisionYwithXYShift(HHGear, 0, 1*-hwSign(ropeDy), -hwSign(ropeDy)) <> 0))) then
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   203
            Gear^.Elasticity := Gear^.Elasticity - _1_2;
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   204
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   205
    HHGear^.X := Gear^.X + mdX * Gear^.Elasticity;
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   206
    HHGear^.Y := Gear^.Y + mdY * Gear^.Elasticity;
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   207
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   208
    HHGear^.dX := HHGear^.X - tx;
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   209
    HHGear^.dY := HHGear^.Y - ty;
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   210
    ////
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   211
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   212
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   213
    haveDivided := false;
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   214
    // check whether rope needs dividing
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   215
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   216
    len := Gear^.Elasticity - _5;
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   217
    nx := Gear^.X + mdX * len;
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   218
    ny := Gear^.Y + mdY * len;
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   219
    tx := mdX * _1_2; // should be the same as increase step
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   220
    ty := mdY * _1_2;
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diff changeset
   221
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   222
    while len > _3 do
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   223
        begin
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   224
        lx := hwRound(nx);
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   225
        ly := hwRound(ny);
8751
4609823efc94 More flagging of Land values. Also use less than for tests of non-terrain, instead of "and $FF00 = 0". Saves a couple of ops, which actually matters a small amount in a few places.
nemo
parents: 8744
diff changeset
   226
        if ((ly and LAND_HEIGHT_MASK) = 0) and ((lx and LAND_WIDTH_MASK) = 0) and (Land[ly, lx] > lfAllObjMask) then
7660
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diff changeset
   227
            begin
8397
5b273af3ac95 Don't use same hwFloat variable at both left and right sides of assignment (inlining bug?)
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   228
            tx := _1 / Distance(ropeDx, ropeDy);
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   229
            // old rope pos
8397
5b273af3ac95 Don't use same hwFloat variable at both left and right sides of assignment (inlining bug?)
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   230
            nx := ropeDx * tx;
5b273af3ac95 Don't use same hwFloat variable at both left and right sides of assignment (inlining bug?)
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   231
            ny := ropeDy * tx;
7660
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diff changeset
   232
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   233
            with RopePoints.ar[RopePoints.Count] do
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   234
                begin
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   235
                X := Gear^.X;
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diff changeset
   236
                Y := Gear^.Y;
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diff changeset
   237
                if RopePoints.Count = 0 then
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diff changeset
   238
                    RopePoints.HookAngle := DxDy2Angle(Gear^.dY, Gear^.dX);
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diff changeset
   239
                b := (nx * HHGear^.dY) > (ny * HHGear^.dX);
8733
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unc0rr
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diff changeset
   240
                sx:= Gear^.dX.isNegative;
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unc0rr
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diff changeset
   241
                sy:= Gear^.dY.isNegative;
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   242
                sb:= Gear^.dX.QWordValue < Gear^.dY.QWordValue;
7660
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diff changeset
   243
                dLen := len
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   244
                end;
8397
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diff changeset
   245
7660
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   246
            with RopePoints.rounded[RopePoints.Count] do
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diff changeset
   247
                begin
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   248
                X := hwRound(Gear^.X);
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diff changeset
   249
                Y := hwRound(Gear^.Y);
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diff changeset
   250
                end;
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diff changeset
   251
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diff changeset
   252
            Gear^.X := Gear^.X + nx * len;
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nemo
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diff changeset
   253
            Gear^.Y := Gear^.Y + ny * len;
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diff changeset
   254
            inc(RopePoints.Count);
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diff changeset
   255
            TryDo(RopePoints.Count <= MAXROPEPOINTS, 'Rope points overflow', true);
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diff changeset
   256
            Gear^.Elasticity := Gear^.Elasticity - len;
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diff changeset
   257
            Gear^.Friction := Gear^.Friction - len;
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diff changeset
   258
            haveDivided := true;
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diff changeset
   259
            break
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   260
            end;
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diff changeset
   261
        nx := nx - tx;
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diff changeset
   262
        ny := ny - ty;
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diff changeset
   263
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   264
        // len := len - _1_2 // should be the same as increase step
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diff changeset
   265
        len.QWordValue := len.QWordValue - _1_2.QWordValue;
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diff changeset
   266
        end;
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diff changeset
   267
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   268
    if not haveDivided then
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   269
        if RopePoints.Count > 0 then // check whether the last dividing point could be removed
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   270
            begin
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   271
            tx := RopePoints.ar[Pred(RopePoints.Count)].X;
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   272
            ty := RopePoints.ar[Pred(RopePoints.Count)].Y;
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diff changeset
   273
            mdX := tx - Gear^.X;
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diff changeset
   274
            mdY := ty - Gear^.Y;
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unc0rr
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   275
            ropeDx:= tx - HHGear^.X;
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   276
            ropeDy:= ty - HHGear^.Y;
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diff changeset
   277
            if RopePoints.ar[Pred(RopePoints.Count)].b xor (mdX * ropeDy > ropeDx * mdY) then
7660
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diff changeset
   278
                begin
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   279
                dec(RopePoints.Count);
8733
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diff changeset
   280
                Gear^.X := tx;
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   281
                Gear^.Y := ty;
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diff changeset
   282
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diff changeset
   283
                // oops, opposite quadrant, don't restore hog position in such case, just remove the point
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unc0rr
parents: 8680
diff changeset
   284
                wrongSide:= (ropeDx.isNegative = RopePoints.ar[RopePoints.Count].sx)
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unc0rr
parents: 8680
diff changeset
   285
                    and (ropeDy.isNegative = RopePoints.ar[RopePoints.Count].sy);
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unc0rr
parents: 8680
diff changeset
   286
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unc0rr
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diff changeset
   287
                // previous check could be inaccurate in vertical/horizontal rope positions,
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unc0rr
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diff changeset
   288
                // so perform this check also, even though odds are 1 to 415927 to hit this
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unc0rr
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diff changeset
   289
                if (not wrongSide)
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diff changeset
   290
                    and ((ropeDx.isNegative = RopePoints.ar[RopePoints.Count].sx)
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diff changeset
   291
                      <> (ropeDy.isNegative = RopePoints.ar[RopePoints.Count].sy)) then
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unc0rr
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diff changeset
   292
                    if RopePoints.ar[RopePoints.Count].sb then
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diff changeset
   293
                        wrongSide:= ropeDy.isNegative = RopePoints.ar[RopePoints.Count].sy
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unc0rr
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diff changeset
   294
                        else
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diff changeset
   295
                        wrongSide:= ropeDx.isNegative = RopePoints.ar[RopePoints.Count].sx;
7660
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diff changeset
   296
8733
b6002f1956d5 Hard math to fix issue 571. Well, not really hard math,
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   297
                if wrongSide then
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diff changeset
   298
                    begin
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diff changeset
   299
                    Gear^.Elasticity := Gear^.Elasticity - RopePoints.ar[RopePoints.Count].dLen;
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parents: 8680
diff changeset
   300
                    Gear^.Friction := Gear^.Friction - RopePoints.ar[RopePoints.Count].dLen;
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unc0rr
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diff changeset
   301
                    end else
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diff changeset
   302
                    begin
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diff changeset
   303
                    Gear^.Elasticity := Gear^.Elasticity + RopePoints.ar[RopePoints.Count].dLen;
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unc0rr
parents: 8680
diff changeset
   304
                    Gear^.Friction := Gear^.Friction + RopePoints.ar[RopePoints.Count].dLen;
7660
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diff changeset
   305
8733
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unc0rr
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diff changeset
   306
                    // restore hog position
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unc0rr
parents: 8680
diff changeset
   307
                    len := _1 / Distance(mdX, mdY);
b6002f1956d5 Hard math to fix issue 571. Well, not really hard math,
unc0rr
parents: 8680
diff changeset
   308
                    mdX := mdX * len;
b6002f1956d5 Hard math to fix issue 571. Well, not really hard math,
unc0rr
parents: 8680
diff changeset
   309
                    mdY := mdY * len;
b6002f1956d5 Hard math to fix issue 571. Well, not really hard math,
unc0rr
parents: 8680
diff changeset
   310
b6002f1956d5 Hard math to fix issue 571. Well, not really hard math,
unc0rr
parents: 8680
diff changeset
   311
                    HHGear^.X := Gear^.X - mdX * Gear^.Elasticity;
b6002f1956d5 Hard math to fix issue 571. Well, not really hard math,
unc0rr
parents: 8680
diff changeset
   312
                    HHGear^.Y := Gear^.Y - mdY * Gear^.Elasticity;
b6002f1956d5 Hard math to fix issue 571. Well, not really hard math,
unc0rr
parents: 8680
diff changeset
   313
                    end;
7660
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   314
                end
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   315
            end;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   316
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   317
    haveCollision := false;
9706
5178d2263521 return land word from uCollisions to make decisions based on it. Should be handy for trampoline.
nemo
parents: 9683
diff changeset
   318
    if TestCollisionXwithXYShift(HHGear, _2*hwSign(HHGear^.dX), 0, hwSign(HHGear^.dX), true) <> 0 then
7660
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   319
        begin
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   320
        HHGear^.dX := -_0_6 * HHGear^.dX;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   321
        haveCollision := true
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   322
        end;
9706
5178d2263521 return land word from uCollisions to make decisions based on it. Should be handy for trampoline.
nemo
parents: 9683
diff changeset
   323
    if TestCollisionYwithXYShift(HHGear, 0, 1*hwSign(HHGear^.dY), hwSign(HHGear^.dY)) <> 0 then
7660
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   324
        begin
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   325
        HHGear^.dY := -_0_6 * HHGear^.dY;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   326
        haveCollision := true
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   327
        end;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   328
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   329
    if haveCollision and (Gear^.Message and (gmLeft or gmRight) <> 0) and (Gear^.Message and (gmUp or gmDown) <> 0) then
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   330
        begin
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   331
        HHGear^.dX := SignAs(hwAbs(HHGear^.dX) + _0_8, HHGear^.dX);
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   332
        HHGear^.dY := SignAs(hwAbs(HHGear^.dY) + _0_8, HHGear^.dY)
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   333
        end;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   334
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   335
    len := hwSqr(HHGear^.dX) + hwSqr(HHGear^.dY);
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   336
    if len > _10 then
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   337
        begin
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   338
        len := _3_2 / hwSqrt(len);
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   339
        HHGear^.dX := HHGear^.dX * len;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   340
        HHGear^.dY := HHGear^.dY * len;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   341
        end;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   342
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   343
    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);
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   344
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   345
    if not haveCollision then
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   346
        begin
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   347
        // backup gear location
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   348
        tx:= Gear^.X;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   349
        ty:= Gear^.Y;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   350
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   351
        if RopePoints.Count > 0 then
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   352
            begin
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   353
            // set gear location to the remote end of the rope, the attachment point
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   354
            Gear^.X:= RopePoints.ar[0].X;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   355
            Gear^.Y:= RopePoints.ar[0].Y;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   356
            end;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   357
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   358
        CheckCollision(Gear);
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   359
        // if we haven't found any collision yet then check the other side too
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   360
        if (Gear^.State and gstCollision) = 0 then
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   361
            begin
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   362
            Gear^.dX.isNegative:= not Gear^.dX.isNegative;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   363
            Gear^.dY.isNegative:= not Gear^.dY.isNegative;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   364
            CheckCollision(Gear);
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   365
            Gear^.dX.isNegative:= not Gear^.dX.isNegative;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   366
            Gear^.dY.isNegative:= not Gear^.dY.isNegative;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   367
            end;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   368
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   369
        haveCollision:= (Gear^.State and gstCollision) <> 0;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   370
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   371
        // restore gear location
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   372
        Gear^.X:= tx;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   373
        Gear^.Y:= ty;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   374
        end;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   375
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   376
    // if the attack key is pressed, lose rope contact as well
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   377
    if (Gear^.Message and gmAttack) <> 0 then
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   378
        haveCollision:= false;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   379
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   380
    HHGear^.dX.QWordValue:= HHGear^.dX.QWordValue shr 2;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   381
    HHGear^.dY.QWordValue:= HHGear^.dY.QWordValue shr 2;
7674
aead327f1e1a fix for issue 293 : "rope stuck after picking crate"
sheepluva
parents: 7662
diff changeset
   382
    if (not haveCollision) and ((Gear^.State and gsttmpFlag) <> 0) then
7660
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   383
        begin
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   384
            begin
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   385
            PlaySound(sndRopeRelease);
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   386
            if Gear^.Hedgehog^.CurAmmoType <> amParachute then
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   387
                RopeWaitCollision(Gear, HHGear)
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   388
            else
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   389
                RopeDeleteMe(Gear, HHGear)
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   390
            end
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   391
        end
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   392
    else
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   393
        if (Gear^.State and gsttmpFlag) = 0 then
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   394
            Gear^.State := Gear^.State or gsttmpFlag;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   395
end;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   396
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   397
procedure RopeRemoveFromAmmo(Gear, HHGear: PGear);
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   398
begin
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   399
    if (Gear^.State and gstAttacked) = 0 then
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   400
        begin
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   401
        OnUsedAmmo(HHGear^.Hedgehog^);
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   402
        Gear^.State := Gear^.State or gstAttacked
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   403
        end;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   404
    ApplyAmmoChanges(HHGear^.Hedgehog^)
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   405
end;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   406
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   407
procedure doStepRopeAttach(Gear: PGear);
10017
de822cd3df3a fixwhitespace and dos2unix
koda
parents: 9998
diff changeset
   408
var
7660
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   409
    HHGear: PGear;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   410
    tx, ty, tt: hwFloat;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   411
begin
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   412
    Gear^.X := Gear^.X - Gear^.dX;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   413
    Gear^.Y := Gear^.Y - Gear^.dY;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   414
    Gear^.Elasticity := Gear^.Elasticity + _1;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   415
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   416
    HHGear := Gear^.Hedgehog^.Gear;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   417
    DeleteCI(HHGear);
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   418
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   419
    if (HHGear^.State and gstMoving) <> 0 then
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   420
        begin
9706
5178d2263521 return land word from uCollisions to make decisions based on it. Should be handy for trampoline.
nemo
parents: 9683
diff changeset
   421
        if TestCollisionXwithGear(HHGear, hwSign(HHGear^.dX)) <> 0 then
7660
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   422
            SetLittle(HHGear^.dX);
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   423
        if HHGear^.dY.isNegative and (TestCollisionYwithGear(HHGear, -1) <> 0) then
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   424
            HHGear^.dY := _0;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   425
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   426
        HHGear^.X := HHGear^.X + HHGear^.dX;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   427
        Gear^.X := Gear^.X + HHGear^.dX;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   428
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   429
        if TestCollisionYwithGear(HHGear, 1) <> 0 then
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   430
            begin
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   431
            CheckHHDamage(HHGear);
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   432
            HHGear^.dY := _0
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   433
            //HHGear^.State:= HHGear^.State and (not (gstHHJumping or gstHHHJump));
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   434
            end
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   435
        else
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   436
            begin
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   437
            HHGear^.Y := HHGear^.Y + HHGear^.dY;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   438
            Gear^.Y := Gear^.Y + HHGear^.dY;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   439
            HHGear^.dY := HHGear^.dY + cGravity;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   440
            if (GameFlags and gfMoreWind) <> 0 then
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   441
                HHGear^.dX := HHGear^.dX + cWindSpeed / HHGear^.Density
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   442
            end;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   443
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   444
        tt := Gear^.Elasticity;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   445
        tx := _0;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   446
        ty := _0;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   447
        while tt > _20 do
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   448
            begin
8751
4609823efc94 More flagging of Land values. Also use less than for tests of non-terrain, instead of "and $FF00 = 0". Saves a couple of ops, which actually matters a small amount in a few places.
nemo
parents: 8744
diff changeset
   449
            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)] > lfAllObjMask) then
7660
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   450
                begin
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   451
                Gear^.X := Gear^.X + tx;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   452
                Gear^.Y := Gear^.Y + ty;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   453
                Gear^.Elasticity := tt;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   454
                Gear^.doStep := @doStepRopeWork;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   455
                PlaySound(sndRopeAttach);
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   456
                with HHGear^ do
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   457
                    begin
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   458
                    State := State and (not (gstAttacking or gstHHJumping or gstHHHJump));
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   459
                    Message := Message and (not gmAttack)
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   460
                    end;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   461
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   462
                RopeRemoveFromAmmo(Gear, HHGear);
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   463
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   464
                tt := _0;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   465
                exit
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   466
                end;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   467
            tx := tx + Gear^.dX + Gear^.dX;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   468
            ty := ty + Gear^.dY + Gear^.dY;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   469
            tt := tt - _2;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   470
            end;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   471
        end;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   472
8751
4609823efc94 More flagging of Land values. Also use less than for tests of non-terrain, instead of "and $FF00 = 0". Saves a couple of ops, which actually matters a small amount in a few places.
nemo
parents: 8744
diff changeset
   473
    if Gear^.Elasticity < _20 then Gear^.CollisionMask:= lfLandMask
4609823efc94 More flagging of Land values. Also use less than for tests of non-terrain, instead of "and $FF00 = 0". Saves a couple of ops, which actually matters a small amount in a few places.
nemo
parents: 8744
diff changeset
   474
    else Gear^.CollisionMask:= lfNotCurrentMask;
7660
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   475
    CheckCollision(Gear);
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   476
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   477
    if (Gear^.State and gstCollision) <> 0 then
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   478
        if Gear^.Elasticity < _10 then
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   479
            Gear^.Elasticity := _10000
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   480
    else
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   481
        begin
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   482
        Gear^.doStep := @doStepRopeWork;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   483
        PlaySound(sndRopeAttach);
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   484
        with HHGear^ do
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   485
            begin
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   486
            State := State and (not (gstAttacking or gstHHJumping or gstHHHJump));
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   487
            Message := Message and (not gmAttack)
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   488
            end;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   489
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   490
        RopeRemoveFromAmmo(Gear, HHGear);
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   491
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   492
        exit
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   493
        end;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   494
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   495
    if (Gear^.Elasticity > Gear^.Friction)
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   496
        or ((Gear^.Message and gmAttack) = 0)
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   497
        or ((HHGear^.State and gstHHDriven) = 0)
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   498
        or (HHGear^.Damage > 0) then
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   499
            begin
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   500
            with Gear^.Hedgehog^.Gear^ do
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   501
                begin
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   502
                State := State and (not gstAttacking);
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   503
                Message := Message and (not gmAttack)
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   504
                end;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   505
        DeleteGear(Gear);
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   506
        exit;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   507
        end;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   508
    if CheckGearDrowning(HHGear) then DeleteGear(Gear)
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   509
end;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   510
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   511
procedure doStepRope(Gear: PGear);
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   512
begin
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   513
    Gear^.dX := - Gear^.dX;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   514
    Gear^.dY := - Gear^.dY;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   515
    Gear^.doStep := @doStepRopeAttach;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   516
    PlaySound(sndRopeShot)
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   517
end;
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   518
8398faa1e628 Fix line endings, add missing amMine entry
nemo
parents: 7658
diff changeset
   519
end.