hedgewars/uAIAmmoTests.pas
author nemo
Mon, 10 Apr 2017 12:06:43 -0400
changeset 12213 bb5522e88ab2
parent 12193 71c47122fbc0
child 12621 d972b31f8881
permissions -rw-r--r--
bulk copy of latest physfs to our misc/libphysfs since this seems to fix an off-by-1 error reliably hit in readln read of 1 byte probably introduced in the addition of the buffered read. Whether this is excessive or whether libphysfs should even be maintained by us is another matter. But at least we shouldn't crash

(*
 * Hedgewars, a free turn based strategy game
 * Copyright (c) 2004-2015 Andrey Korotaev <unC0Rr@gmail.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *)

{$INCLUDE "options.inc"}

unit uAIAmmoTests;
interface
uses uConsts, uFloat, uTypes, uAIMisc;
const
    amtest_Rare            = $00000001; // check only several positions
    amtest_NoTarget        = $00000002; // each pos, but no targetting
    amtest_MultipleAttacks = $00000004; // test could result in multiple attacks, set AttacksNum

var windSpeed: real;

type TAttackParams = record
        Time, AttacksNum: Longword;
        Angle, Power: LongInt;
        ExplX, ExplY, ExplR: LongInt;
        AttackPutX, AttackPutY: LongInt;
        end;

function TestBazooka(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
function TestBee(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
function TestSnowball(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
function TestGrenade(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
function TestMolotov(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
function TestClusterBomb(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
function TestWatermelon(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
function TestDrillRocket(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
function TestMortar(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
function TestShotgun(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
function TestDesertEagle(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
function TestSniperRifle(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
function TestBaseballBat(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
function TestFirePunch(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
function TestWhip(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
function TestKamikaze(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
function TestAirAttack(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
function TestTeleport(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
function TestHammer(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
function TestCake(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
function TestDynamite(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;

type TAmmoTestProc = function (Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
    TAmmoTest = record
            proc: TAmmoTestProc;
            flags: Longword;
            end;

const AmmoTests: array[TAmmoType] of TAmmoTest =
            (
            (proc: nil;              flags: 0), // amNothing
            (proc: @TestGrenade;     flags: 0), // amGrenade
            (proc: @TestClusterBomb; flags: 0), // amClusterBomb
            (proc: @TestBazooka;     flags: 0), // amBazooka
            (proc: @TestBee;         flags: amtest_Rare), // amBee
            (proc: @TestShotgun;     flags: 0), // amShotgun
            (proc: nil;              flags: 0), // amPickHammer
            (proc: nil;              flags: 0), // amSkip
            (proc: nil;              flags: 0), // amRope
            (proc: nil;              flags: 0), // amMine
            (proc: @TestDesertEagle; flags: amtest_MultipleAttacks), // amDEagle
            (proc: @TestDynamite;    flags: amtest_NoTarget), // amDynamite
            (proc: @TestFirePunch;   flags: amtest_NoTarget), // amFirePunch
            (proc: @TestWhip;        flags: amtest_NoTarget), // amWhip
            (proc: @TestBaseballBat; flags: amtest_NoTarget), // amBaseballBat
            (proc: nil;              flags: 0), // amParachute
            (proc: @TestAirAttack;   flags: amtest_Rare), // amAirAttack
            (proc: nil;              flags: 0), // amMineStrike
            (proc: nil;              flags: 0), // amBlowTorch
            (proc: nil;              flags: 0), // amGirder
            (proc: nil;              flags: 0), // amTeleport
            //(proc: @TestTeleport;    flags: amtest_OnTurn), // amTeleport
            (proc: nil;              flags: 0), // amSwitch
            (proc: @TestMortar;      flags: 0), // amMortar
            (proc: @TestKamikaze;    flags: 0), // amKamikaze
            (proc: @TestCake;        flags: amtest_Rare or amtest_NoTarget), // amCake
            (proc: nil;              flags: 0), // amSeduction
            (proc: @TestWatermelon;  flags: 0), // amWatermelon
            (proc: nil;              flags: 0), // amHellishBomb
            (proc: nil;              flags: 0), // amNapalm
            (proc: @TestDrillRocket; flags: 0), // amDrill
            (proc: nil;              flags: 0), // amBallgun
            (proc: nil;              flags: 0), // amRCPlane
            (proc: nil;              flags: 0), // amLowGravity
            (proc: nil;              flags: 0), // amExtraDamage
            (proc: nil;              flags: 0), // amInvulnerable
            (proc: nil;              flags: 0), // amExtraTime
            (proc: nil;              flags: 0), // amLaserSight
            (proc: nil;              flags: 0), // amVampiric
            (proc: @TestSniperRifle; flags: 0), // amSniperRifle
            (proc: nil;              flags: 0), // amJetpack
            (proc: @TestMolotov;     flags: 0), // amMolotov
            (proc: nil;              flags: 0), // amBirdy
            (proc: nil;              flags: 0), // amPortalGun
            (proc: nil;              flags: 0), // amPiano
            (proc: @TestGrenade;     flags: 0), // amGasBomb
            (proc: @TestShotgun;     flags: 0), // amSineGun
            (proc: nil;              flags: 0), // amFlamethrower
            (proc: @TestGrenade;     flags: 0), // amSMine
            (proc: @TestHammer;      flags: amtest_NoTarget), // amHammer
            (proc: nil;              flags: 0), // amResurrector
            (proc: nil;              flags: 0), // amDrillStrike
            (proc: nil;              flags: 0), // amSnowball
            (proc: nil;              flags: 0), // amTardis
            //(proc: nil;              flags: 0), // amStructure
            (proc: nil;              flags: 0), // amLandGun
            (proc: nil;              flags: 0), // amIceGun
            (proc: nil;              flags: 0), // amKnife
            (proc: nil;              flags: 0), // amRubber
            (proc: nil;              flags: 0), // amAirMine
            (proc: nil;              flags: 0)  // amDuck
            );

implementation
uses uVariables, uUtils, uGearsHandlers;

function Metric(x1, y1, x2, y2: LongInt): LongInt; inline;
begin
Metric:= abs(x1 - x2) + abs(y1 - y2)
end;

function TestBazooka(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
var Vx, Vy, r, mX, mY: real;
    rTime: LongInt;
    EX, EY: LongInt;
    valueResult: LongInt;
    x, y, dX, dY: real;
    t: LongInt;
    value: LongInt;
begin
mX:= hwFloat2Float(Me^.X);
mY:= hwFloat2Float(Me^.Y);
ap.Time:= 0;
rTime:= 350;
ap.ExplR:= 0;
valueResult:= BadTurn;
repeat
    rTime:= rTime + 300 + Level * 50 + random(300);
    Vx:= - windSpeed * rTime * 0.5 + (Targ.Point.X + AIrndSign(2) - mX) / rTime;
    Vy:= cGravityf * rTime * 0.5 - (Targ.Point.Y + 1 - mY) / rTime;
    r:= sqr(Vx) + sqr(Vy);
    if not (r > 1) then
        begin
        x:= mX;
        y:= mY;
        dX:= Vx;
        dY:= -Vy;
        t:= rTime;
        repeat
            x:= x + dX;
            y:= y + dY;
            dX:= dX + windSpeed;
            dY:= dY + cGravityf;
            dec(t)
        until (((Me = CurrentHedgehog^.Gear) and TestColl(trunc(x), trunc(y), 5)) or
               ((Me <> CurrentHedgehog^.Gear) and TestCollExcludingMe(Me^.Hedgehog^.Gear, trunc(x), trunc(y), 5))) or (t <= 0);

        EX:= trunc(x);
        EY:= trunc(y);
        if Level = 1 then
            value:= RateExplosion(Me, EX, EY, 101, afTrackFall or afErasesLand)
        else value:= RateExplosion(Me, EX, EY, 101);
        if (value = 0) and (Targ.Kind = gtHedgehog) and (Targ.Score > 0) then
            if GameFlags and gfSolidLand = 0 then
                 value := 1024 - Metric(Targ.Point.X, Targ.Point.Y, EX, EY) div 64
            else value := BadTurn;
        if valueResult <= value then
            begin
            ap.Angle:= DxDy2AttackAnglef(Vx, Vy) + AIrndSign(random((Level - 1) * 9));
            ap.Power:= trunc(sqrt(r) * cMaxPower) - random((Level - 1) * 17 + 1);
            ap.ExplR:= 100;
            ap.ExplX:= EX;
            ap.ExplY:= EY;
            valueResult:= value
            end;
        end
//until (value > 204800) or (rTime > 4250); not so useful since adding score to the drowning
until rTime > 5050 - Level * 800;
TestBazooka:= valueResult
end;

function calcBeeFlight(Me: PGear; x, y, dx, dy, tX, tY: real; var eX, eY: LongInt): LongInt;
var t: Longword;
    f: boolean;
    speed, d: real;
begin
    // parabola flight before activation
    t:= 500;
    repeat
        x:= x + dx;
        y:= y + dy;
        dy:= dy + cGravityf;
        f:= ((Me = CurrentHedgehog^.Gear) and TestColl(trunc(x), trunc(y), 5)) or
           ((Me <> CurrentHedgehog^.Gear) and TestCollExcludingMe(Me^.Hedgehog^.Gear, trunc(x), trunc(y), 5));
        dec(t)
    until (t = 0) or (y >= cWaterLine) or f;

    if f then
    begin
        eX:= trunc(x);
        eY:= trunc(y);
        exit(RateExplosion(Me, eX, eY, 101, afTrackFall or afErasesLand));
    end;


    // activated
    t:= 5000;
    speed:= sqrt(sqr(dx) + sqr(dy));

    repeat
        if (t and $F) = 0 then
        begin
            dx:= dx + 0.000064 * (tX - x);
            dy:= dy + 0.000064 * (tY - y);
            d := speed / sqrt(sqr(dx) + sqr(dy));
            dx:= dx * d;
            dy:= dy * d;
        end;

        x:= x + dx;
        y:= y + dy;
        f:= ((Me = CurrentHedgehog^.Gear) and TestColl(trunc(x), trunc(y), 5)) or
           ((Me <> CurrentHedgehog^.Gear) and TestCollExcludingMe(Me^.Hedgehog^.Gear, trunc(x), trunc(y), 5));
        dec(t)
    until (t = 0) or f;

    if f then
    begin
        eX:= trunc(x);
        eY:= trunc(y);
        exit(RateExplosion(Me, eX, eY, 101, afTrackFall or afErasesLand));
    end
    else
        calcBeeFlight:= BadTurn
end;

function TestBee(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
var i, j: LongInt;
    valueResult, v, a, p: LongInt;
    mX, mY, dX: real;
    eX, eY: LongInt;
begin
    if Level > 1 then
        exit(BadTurn);

    eX:= 0;
    eY:= 0;
    mX:= hwFloat2Float(Me^.X);
    mY:= hwFloat2Float(Me^.Y);
    valueResult:= BadTurn;
    for i:= 0 to 8 do
        for j:= 0 to 1 do
            begin
            a:= i * 120;
            p:= random(cMaxPower - 200) + 180;

            if j = 0 then
                a:= -a;

            v:= calcBeeFlight(Me
                    , mX
                    , mY
                    , sin(a * pi / 2048) * p / cPowerDivisor
                    , -cos(a * pi / 2048) * p / cPowerDivisor
                    , Targ.Point.X
                    , Targ.Point.Y
                    , eX
                    , eY);

            if v > valueResult then
                begin
                ap.ExplR:= 100;
                ap.ExplX:= eX;
                ap.ExplY:= eY;
                ap.Angle:= a;
                ap.Power:= p;
                valueResult:= v
                end
            end;

    ap.AttackPutX:= Targ.Point.X;
    ap.AttackPutY:= Targ.Point.Y;

    if valueResult > 0 then
        TestBee:= valueResult - 5000
    else
        TestBee:= BadTurn // no digging
end;

function TestDrillRocket(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
var Vx, Vy, r, mX, mY: real;
    rTime: LongInt;
    EX, EY: LongInt;
    valueResult: LongInt;
    x, y, dX, dY: real;
    t: LongInt;
    value: LongInt;
    t2: real;
    timer: Longint;
begin
    if (Level > 3) then exit(BadTurn);

    mX:= hwFloat2Float(Me^.X);
    mY:= hwFloat2Float(Me^.Y);
    ap.Time:= 0;
    rTime:= 350;
    ap.ExplR:= 0;
    valueResult:= BadTurn;
    timer:= 0;
    repeat
        rTime:= rTime + 300 + Level * 50 + random(300);
        Vx:= - windSpeed * rTime * 0.5 + (Targ.Point.X + AIrndSign(2) - mX) / rTime;
        Vy:= cGravityf * rTime * 0.5 - (Targ.Point.Y - 35 - mY) / rTime;
        r:= sqr(Vx) + sqr(Vy);
        if not (r > 1) then
            begin
            x:= mX;
            y:= mY;
            dX:= Vx;
            dY:= -Vy;
            t:= rTime;
            repeat
                x:= x + dX;
                y:= y + dY;
                dX:= dX + windSpeed;
                dY:= dY + cGravityf;
                dec(t)
            until (((Me = CurrentHedgehog^.Gear) and TestColl(trunc(x), trunc(y), 5)) or
                   ((Me <> CurrentHedgehog^.Gear) and TestCollExcludingMe(Me^.Hedgehog^.Gear, trunc(x), trunc(y), 5))) or (y > cWaterLine);

            if TestCollExcludingObjects(trunc(x), trunc(y), 5) and (Abs(Targ.Point.X - trunc(x)) + Abs(Targ.Point.Y - trunc(y)) > 21) then
                begin
                timer := 500;
                t2 := 0.5 / sqrt(sqr(dX) + sqr(dY));
                dX := dX * t2;
                dY := dY * t2;
                repeat
                    x:= x + dX;
                    y:= y + dY;
                    dec(timer);
                until (Abs(Targ.Point.X - trunc(x)) + Abs(Targ.Point.Y - trunc(y)) < 22)
                    or (x < 0)
                    or (y < 0)
                    or (trunc(x) > LAND_WIDTH)
                    or (trunc(y) > LAND_HEIGHT)
                    or (not TestCollExcludingObjects(trunc(x), trunc(y), 5))
                    or (timer = 0)
                end;
            EX:= trunc(x);
            EY:= trunc(y);
            // Try to prevent AI from thinking firing into water will cause a drowning
            if (EY < cWaterLine-5) and (timer > 0) and (Abs(Targ.Point.X - trunc(x)) + Abs(Targ.Point.Y - trunc(y)) > 21) then exit(BadTurn);
            if Level = 1 then
                value:= RateExplosion(Me, EX, EY, 101, afTrackFall or afErasesLand)
            else value:= RateExplosion(Me, EX, EY, 101);
            if valueResult <= value then
                begin
                ap.Angle:= DxDy2AttackAnglef(Vx, Vy) + AIrndSign(random((Level - 1) * 9));
                ap.Power:= trunc(sqrt(r) * cMaxPower) - random((Level - 1) * 17 + 1);
                ap.ExplR:= 100;
                ap.ExplX:= EX;
                ap.ExplY:= EY;
                valueResult:= value-2500 // trying to make it slightly less attractive than a bazooka, to prevent waste.  AI could use awareness of weapon count
                end;
            end
    until rTime > 5050 - Level * 800;
    TestDrillRocket:= valueResult
end;


function TestSnowball(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
var Vx, Vy, r: real;
    rTime: LongInt;
    EX, EY: LongInt;
    valueResult: LongInt;
    x, y, dX, dY, meX, meY: real;
    t: LongInt;
    value: LongInt;

begin
meX:= hwFloat2Float(Me^.X);
meY:= hwFloat2Float(Me^.Y);
ap.Time:= 0;
rTime:= 350;
ap.ExplR:= 0;
valueResult:= BadTurn;
repeat
    rTime:= rTime + 300 + Level * 50 + random(1000);
    Vx:= - windSpeed * rTime * 0.5 + ((Targ.Point.X + AIrndSign(2)) - meX) / rTime;
    Vy:= cGravityf * rTime * 0.5 - (Targ.Point.Y - meY) / rTime;
    r:= sqr(Vx) + sqr(Vy);
    if not (r > 1) then
        begin
        x:= meX;
        y:= meY;
        dX:= Vx;
        dY:= -Vy;
        t:= rTime;
        repeat
            x:= x + dX;
            y:= y + dY;
            dX:= dX + windSpeed;
            dY:= dY + cGravityf;
            dec(t)
        until (((Me = CurrentHedgehog^.Gear) and TestColl(trunc(x), trunc(y), 5)) or
               ((Me <> CurrentHedgehog^.Gear) and TestCollExcludingMe(Me^.Hedgehog^.Gear, trunc(x), trunc(y), 5))) or (t <= 0);
        EX:= trunc(x);
        EY:= trunc(y);

        value:= RateShove(Me, trunc(x), trunc(y), 5, 1, trunc((abs(dX)+abs(dY))*20), -dX, -dY, afTrackFall);
        // LOL copypasta: this is score for digging with... snowball
        //if value = 0 then
        //    value:= - Metric(Targ.Point.X, Targ.Point.Y, EX, EY) div 64;

        if valueResult <= value then
            begin
            ap.Angle:= DxDy2AttackAnglef(Vx, Vy) + AIrndSign(random((Level - 1) * 9));
            ap.Power:= trunc(sqrt(r) * cMaxPower) - random((Level - 1) * 17 + 1);
            ap.ExplR:= 0;
            ap.ExplX:= EX;
            ap.ExplY:= EY;
            valueResult:= value
            end;
     end
until (rTime > 5050 - Level * 800);
TestSnowball:= valueResult
end;

function TestMolotov(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
var Vx, Vy, r: real;
    Score, EX, EY, valueResult: LongInt;
    TestTime: LongInt;
    x, y, dY, meX, meY: real;
    t: LongInt;
begin
meX:= hwFloat2Float(Me^.X);
meY:= hwFloat2Float(Me^.Y);
valueResult:= BadTurn;
TestTime:= 0;
ap.ExplR:= 0;
repeat
    inc(TestTime, 300);
    Vx:= (Targ.Point.X - meX) / TestTime;
    Vy:= cGravityf * (TestTime div 2) - Targ.Point.Y - meY / TestTime;
    r:= sqr(Vx) + sqr(Vy);
    if not (r > 1) then
        begin
        x:= meX;
        y:= meY;
        dY:= -Vy;
        t:= TestTime;
        repeat
            x:= x + Vx;
            y:= y + dY;
            dY:= dY + cGravityf;
            dec(t)
        until (((Me = CurrentHedgehog^.Gear) and TestColl(trunc(x), trunc(y), 6)) or
               ((Me <> CurrentHedgehog^.Gear) and TestCollExcludingMe(Me^.Hedgehog^.Gear, trunc(x), trunc(y), 6))) or (t = 0);
        EX:= trunc(x);
        EY:= trunc(y);
        if t < 50 then
            Score:= RateExplosion(Me, EX, EY, 97)  // average of 17 attempts, most good, but some failing spectacularly
        else
            Score:= BadTurn;

        if valueResult < Score then
            begin
            ap.Angle:= DxDy2AttackAnglef(Vx, Vy) + AIrndSign(random(Level));
            ap.Power:= trunc(sqrt(r) * cMaxPower) + AIrndSign(random(Level) * 15);
            ap.ExplR:= 100;
            ap.ExplX:= EX;
            ap.ExplY:= EY;
            valueResult:= Score
            end;
        end
until (TestTime > 5050 - Level * 800);
TestMolotov:= valueResult
end;

function TestGrenade(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
const tDelta = 24;
var Vx, Vy, r: real;
    Score, EX, EY, valueResult: LongInt;
    TestTime: LongInt;
    x, y, meX, meY, dY: real;
    t: LongInt;
begin
valueResult:= BadTurn;
TestTime:= 0;
ap.ExplR:= 0;
meX:= hwFloat2Float(Me^.X);
meY:= hwFloat2Float(Me^.Y);
repeat
    inc(TestTime, 1000);
    Vx:= (Targ.Point.X - meX) / (TestTime + tDelta);
    Vy:= cGravityf * ((TestTime + tDelta) div 2) - (Targ.Point.Y - meY) / (TestTime + tDelta);
    r:= sqr(Vx) + sqr(Vy);
    if not (r > 1) then
        begin
        x:= meX;
        y:= meY;
        dY:= -Vy;
        t:= TestTime;
        repeat
            x:= x + Vx;
            y:= y + dY;
            dY:= dY + cGravityf;
            dec(t)
        until (((Me = CurrentHedgehog^.Gear) and TestColl(trunc(x), trunc(y), 5)) or
               ((Me <> CurrentHedgehog^.Gear) and TestCollExcludingMe(Me^.Hedgehog^.Gear, trunc(x), trunc(y), 5))) or (t = 0);
    EX:= trunc(x);
    EY:= trunc(y);
    if t < 50 then
        if Level = 1 then
            Score:= RateExplosion(Me, EX, EY, 101, afTrackFall or afErasesLand)
        else Score:= RateExplosion(Me, EX, EY, 101)
    else
        Score:= BadTurn;

    if (valueResult < Score) and (Score > 0) then
        begin
        ap.Angle:= DxDy2AttackAnglef(Vx, Vy) + AIrndSign(random(Level * 3));
        ap.Power:= trunc(sqrt(r) * cMaxPower) + AIrndSign(random(Level) * 20);
        ap.Time:= TestTime;
        ap.ExplR:= 100;
        ap.ExplX:= EX;
        ap.ExplY:= EY;
        valueResult:= Score
        end;
    end
//until (Score > 204800) or (TestTime > 4000);
until TestTime > 4500 - Level * 512;
TestGrenade:= valueResult
end;

function TestClusterBomb(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
const tDelta = 24;
var Vx, Vy, r: real;
    Score, EX, EY, valueResult: LongInt;
    TestTime: Longword;
    x, y, dY, meX, meY: real;
    t: LongInt;
begin
valueResult:= BadTurn;
TestTime:= 500;
ap.ExplR:= 0;
meX:= hwFloat2Float(Me^.X);
meY:= hwFloat2Float(Me^.Y);
repeat
    inc(TestTime, 900);
    // Try to overshoot slightly, seems to pay slightly better dividends in terms of hitting cluster
    if meX<Targ.Point.X then
        Vx:= ((Targ.Point.X+10) - meX) / (TestTime + tDelta)
    else
        Vx:= ((Targ.Point.X-10) - meX) / (TestTime + tDelta);
    Vy:= cGravityf * ((TestTime + tDelta) div 2) - ((Targ.Point.Y-50) - meY) / (TestTime + tDelta);
    r:= sqr(Vx)+sqr(Vy);
    if not (r > 1) then
        begin
        x:= meX;
        y:= meY;
        dY:= -Vy;
        t:= TestTime;
    repeat
        x:= x + Vx;
        y:= y + dY;
        dY:= dY + cGravityf;
        dec(t)
    until (((Me = CurrentHedgehog^.Gear) and TestColl(trunc(x), trunc(y), 5)) or
           ((Me <> CurrentHedgehog^.Gear) and TestCollExcludingMe(Me^.Hedgehog^.Gear, trunc(x), trunc(y), 5))) or (t = 0);
    EX:= trunc(x);
    EY:= trunc(y);
    if t < 50 then
        Score:= RateExplosion(Me, EX, EY, 41)
    else
        Score:= BadTurn;

     if Score > 0 then
        begin
        ap.Angle:= DxDy2AttackAnglef(Vx, Vy) + AIrndSign(random(Level * 2));
        ap.Power:= trunc(sqrt(r) * cMaxPower) + AIrndSign(random(Level) * 15);
        ap.Time:= TestTime div 1000 * 1000;
        ap.ExplR:= 90;
        ap.ExplX:= EX;
        ap.ExplY:= EY;
        valueResult:= Score
        end;
     end
until (TestTime = 4100);
TestClusterBomb:= valueResult
end;

function TestWatermelon(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
const tDelta = 24;
var Vx, Vy, r: real;
    Score, EX, EY, valueResult: LongInt;
    TestTime: Longword;
    x, y, dY, meX, meY: real;
    t: LongInt;
begin
valueResult:= BadTurn;
TestTime:= 500;
ap.ExplR:= 0;
meX:= hwFloat2Float(Me^.X);
meY:= hwFloat2Float(Me^.Y);
repeat
    inc(TestTime, 900);
    Vx:= (Targ.Point.X - meX) / (TestTime + tDelta);
    Vy:= cGravityf * ((TestTime + tDelta) div 2) - ((Targ.Point.Y-50) - meY) / (TestTime + tDelta);
    r:= sqr(Vx)+sqr(Vy);
    if not (r > 1) then
        begin
        x:= meX;
        y:= meY;
        dY:= -Vy;
        t:= TestTime;
        repeat
            x:= x + Vx;
            y:= y + dY;
            dY:= dY + cGravityf;
            dec(t)
       until (((Me = CurrentHedgehog^.Gear) and TestColl(trunc(x), trunc(y), 6)) or
               ((Me <> CurrentHedgehog^.Gear) and TestCollExcludingMe(Me^.Hedgehog^.Gear, trunc(x), trunc(y), 6))) or (t = 0);

        EX:= trunc(x);
        EY:= trunc(y);
        if t < 50 then
            Score:= RateExplosion(Me, EX, EY, 200) + RateExplosion(Me, EX, EY + 120, 200)
        else
            Score:= BadTurn;

        if valueResult < Score then
            begin
            ap.Angle:= DxDy2AttackAnglef(Vx, Vy) + AIrndSign(random(Level));
            ap.Power:= trunc(sqrt(r) * cMaxPower) + AIrndSign(random(Level) * 15);
            ap.Time:= TestTime div 1000 * 1000;
            ap.ExplR:= 300;
            ap.ExplX:= EX;
            ap.ExplY:= EY;
            valueResult:= Score
            end;
        end
until (TestTime = 4100);
TestWatermelon:= valueResult
end;


    function Solve(TX, TY, MX, MY: LongInt): LongWord;
    var A, B, D, T: real;
        C: LongInt;
    begin
        A:= sqr(cGravityf);
        B:= - cGravityf * (TY - MY) - 1;
        C:= sqr(TY - MY) + sqr(TX - MX);
        D:= sqr(B) - A * C;
        if D >= 0 then
            begin
            D:= sqrt(D) - B;
            if D >= 0 then
                T:= sqrt(D * 2 / A)
            else
                T:= 0;
            Solve:= trunc(T)
            end
            else
                Solve:= 0
    end;

function TestMortar(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
//const tDelta = 24;
var Vx, Vy: real;
    Score, EX, EY: LongInt;
    TestTime: Longword;
    x, y, dY, meX, meY: real;
begin
    TestMortar:= BadTurn;
    ap.ExplR:= 0;

    meX:= hwFloat2Float(Me^.X);
    meY:= hwFloat2Float(Me^.Y);

    if (Level > 2) then
        exit(BadTurn);

    TestTime:= Solve(Targ.Point.X, Targ.Point.Y, trunc(meX), trunc(meY));

    if TestTime = 0 then
        exit(BadTurn);

    Vx:= (Targ.Point.X - meX) / TestTime;
    Vy:= cGravityf * (TestTime div 2) - (Targ.Point.Y - meY) / TestTime;

    x:= meX;
    y:= meY;
    dY:= -Vy;

    repeat
        x:= x + Vx;
        y:= y + dY;
        dY:= dY + cGravityf;
        EX:= trunc(x);
        EY:= trunc(y);
    until (((Me = CurrentHedgehog^.Gear) and TestColl(EX, EY, 4)) or
           ((Me <> CurrentHedgehog^.Gear) and TestCollExcludingMe(Me^.Hedgehog^.Gear, EX, EY, 4))) or (EY > cWaterLine);

    if (EY < cWaterLine) and (dY >= 0) then
        begin
        Score:= RateExplosion(Me, EX, EY, 91);
        if (Score = 0) then
            if (dY > 0.15) and (Targ.Kind = gtHedgehog) and (Targ.Score > 0) then
                Score:= - abs(Targ.Point.Y - EY) div 32
            else
                Score:= BadTurn
        else if (Score < 0) then
            Score:= BadTurn
        end
    else
        Score:= BadTurn;

    if Score > 0 then
        begin
        ap.Angle:= DxDy2AttackAnglef(Vx, Vy) + AIrndSign(random(Level));
        ap.Power:= 1;
        ap.ExplR:= 100;
        ap.ExplX:= EX;
        ap.ExplY:= EY;
        TestMortar:= Score
        end;
end;

function TestShotgun(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
const
    MIN_RANGE =  80;
    MAX_RANGE = 400;
var Vx, Vy, x, y: real;
    rx, ry, valueResult: LongInt;
    range: integer;
begin
TestShotgun:= BadTurn;
ap.ExplR:= 0;
ap.Time:= 0;
ap.Power:= 1;
x:= hwFloat2Float(Me^.X);
y:= hwFloat2Float(Me^.Y);
range:= Metric(trunc(x), trunc(y), Targ.Point.X, Targ.Point.Y);
if ( range < MIN_RANGE ) or ( range > MAX_RANGE ) then
    exit(BadTurn);

Vx:= (Targ.Point.X - x) * 1 / 1024;
Vy:= (Targ.Point.Y - y) * 1 / 1024;
ap.Angle:= DxDy2AttackAnglef(Vx, -Vy);
repeat
    x:= x + vX;
    y:= y + vY;
    rx:= trunc(x);
    ry:= trunc(y);
    if ((Me = CurrentHedgehog^.Gear) and TestColl(rx, ry, 2)) or
        ((Me <> CurrentHedgehog^.Gear) and TestCollExcludingMe(Me^.Hedgehog^.Gear, rx, ry, 2)) then
    begin
        x:= x + vX * 8;
        y:= y + vY * 8;
        valueResult:= RateShotgun(Me, vX, vY, rx, ry);

        if (valueResult = 0) and (Targ.Kind = gtHedgehog) and (Targ.Score > 0) then
            begin
            if GameFlags and gfSolidLand = 0 then
                 valueResult:= 1024 - Metric(Targ.Point.X, Targ.Point.Y, rx, ry) div 64
            else valueResult := BadTurn
            end
        else
            dec(valueResult, Level * 4000);
        // 27/20 is reuse bonus
        exit(valueResult * 27 div 20)
    end
until (Abs(Targ.Point.X - trunc(x)) + Abs(Targ.Point.Y - trunc(y)) < 4)
    or (x < 0)
    or (y < 0)
    or (trunc(x) > LAND_WIDTH)
    or (trunc(y) > LAND_HEIGHT);

TestShotgun:= BadTurn
end;

function TestDesertEagle(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
var Vx, Vy, x, y, t: real;
    d: Longword;
    ix, iy, valueResult: LongInt;
begin
if (Level > 4) or (Targ.Score < 0) or (Targ.Kind <> gtHedgehog) then exit(BadTurn);
Level:= Level; // avoid compiler hint
ap.ExplR:= 1;
ap.Time:= 0;
ap.Power:= 1;

x:= hwFloat2Float(Me^.X);
y:= hwFloat2Float(Me^.Y);

if Abs(trunc(x) - Targ.Point.X) + Abs(trunc(y) - Targ.Point.Y) < 20 then
    exit(BadTurn);

t:= 2 / sqrt(sqr(Targ.Point.X - x)+sqr(Targ.Point.Y-y));
Vx:= (Targ.Point.X - x) * t;
Vy:= (Targ.Point.Y - y) * t;
ap.Angle:= DxDy2AttackAnglef(Vx, -Vy);
d:= 0;

ix:= trunc(x);
iy:= trunc(y);

if ((ix and LAND_WIDTH_MASK) = 0) and ((iy and LAND_HEIGHT_MASK) = 0) then
    repeat
        if Land[iy, ix] <> 0 then
            inc(d);
        x:= x + vX;
        y:= y + vY;
        ix:= trunc(x);
        iy:= trunc(y);
    until (Abs(Targ.Point.X - ix) + Abs(Targ.Point.Y - iy) < 5)
        or (x < 0)
        or (y < 0)
        or (ix >= LAND_WIDTH)
        or (iy >= LAND_HEIGHT)
        or (d > 48);

if Abs(Targ.Point.X - ix) + Abs(Targ.Point.Y - iy) < 5 then
    begin
    ap.AttacksNum:= 1 + (d + 8) div 12;
    valueResult:= RateShove(Me, Targ.Point.X, Targ.Point.Y, 1, 7, 20, vX*0.125, vY*0.125, afTrackFall) - ap.AttacksNum
    end
else
    valueResult:= BadTurn;

TestDesertEagle:= valueResult
end;


function TestSniperRifle(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
var Vx, Vy, x, y, t, dmg: real;
    d: Longword;
    //fallDmg: LongInt;
begin
if (Level > 3) or (Targ.Score < 0) or (Targ.Kind <> gtHedgehog) then exit(BadTurn);
Level:= Level; // avoid compiler hint
ap.ExplR:= 0;
ap.Time:= 0;
ap.Power:= 1;
x:= hwFloat2Float(Me^.X);
y:= hwFloat2Float(Me^.Y);
if Abs(trunc(x) - Targ.Point.X) + Abs(trunc(y) - Targ.Point.Y) < 40 then
    exit(BadTurn);

dmg:= sqrt(sqr(Targ.Point.X - x)+sqr(Targ.Point.Y-y));
t:= 1.5 / dmg;
dmg:= dmg * 0.025; // div 40
Vx:= (Targ.Point.X - x) * t;
Vy:= (Targ.Point.Y - y) * t;
ap.Angle:= DxDy2AttackAnglef(Vx, -Vy);
d:= 0;

repeat
    x:= x + vX;
    y:= y + vY;
    if ((trunc(x) and LAND_WIDTH_MASK) = 0)and((trunc(y) and LAND_HEIGHT_MASK) = 0)
    and (Land[trunc(y), trunc(x)] <> 0) then
        inc(d);
until (Abs(Targ.Point.X - trunc(x)) + Abs(Targ.Point.Y - trunc(y)) < 4)
    or (x < 0)
    or (y < 0)
    or (trunc(x) > LAND_WIDTH)
    or (trunc(y) > LAND_HEIGHT)
    or (d > 22);

if Abs(Targ.Point.X - trunc(x)) + Abs(Targ.Point.Y - trunc(y)) < 4 then
     TestSniperRifle:= RateShove(Me, Targ.Point.X, Targ.Point.Y, 1, trunc(dmg), 20, vX*0.166, vY*0.166, afTrackFall)
else TestSniperRifle:= BadTurn;
end;


function TestBaseballBat(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
var valueResult, a, v1, v2: LongInt;
    x, y, trackFall: LongInt;
    dx, dy: real;
begin
    Targ:= Targ; // avoid compiler hint

    if Level < 3 then trackFall:= afTrackFall
        else trackFall:= 0;

    ap.ExplR:= 0;
    ap.Time:= 0;
    ap.Power:= 1;
    x:= hwRound(Me^.X);
    y:= hwRound(Me^.Y);

    a:= cMaxAngle div 2;
    valueResult:= 0;

    while a >= 0 do
        begin
        dx:= sin(a / cMaxAngle * pi) * 0.5;
        dy:= cos(a / cMaxAngle * pi) * 0.5;

        v1:= RateShove(Me, x - 10, y + 2
                , 32, 30, 115
                , -dx, -dy, trackFall);
        v2:= RateShove(Me, x + 10, y + 2
                , 32, 30, 115
                , dx, -dy, trackFall);
        if (v1 > valueResult) or (v2 > valueResult) then
            if (v2 > v1)
                or {don't encourage turning for no gain}((v2 = v1) and (not Me^.dX.isNegative)) then
                begin
                ap.Angle:= a;
                valueResult:= v2
                end
            else
                begin
                ap.Angle:= -a;
                valueResult:= v1
                end;

        a:= a - 15 - random(cMaxAngle div 16)
        end;

    if valueResult <= 0 then
        valueResult:= BadTurn;

    TestBaseballBat:= valueResult;
end;

function TestFirePunch(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
var valueResult, v1, v2, i: LongInt;
    x, y, trackFall: LongInt;
begin
    Targ:= Targ; // avoid compiler hint

    if Level = 1 then trackFall:= afTrackFall
    else trackFall:= 0;

    ap.ExplR:= 0;
    ap.Time:= 0;
    ap.Power:= 1;
    x:= hwRound(Me^.X);
    y:= hwRound(Me^.Y) + 4;

    v1:= 0;
    for i:= 0 to 8 do
        begin
        v1:= v1 + RateShove(Me, x - 5, y - 10 * i
                , 19, 30, 40
                , -0.45, -0.9, trackFall or afSetSkip);
        end;
    v1:= v1 + RateShove(Me, x - 5, y - 90
            , 19, 30, 40
            , -0.45, -0.9, trackFall);


    // now try opposite direction
    v2:= 0;
    for i:= 0 to 8 do
        begin
        v2:= v2 + RateShove(Me, x + 5, y - 10 * i
                , 19, 30, 40
                , 0.45, -0.9, trackFall or afSetSkip);
        end;
    v2:= v2 + RateShove(Me, x + 5, y - 90
            , 19, 30, 40
            , 0.45, -0.9, trackFall);

    if (v2 > v1)
        or {don't encourage turning for no gain}((v2 = v1) and (not Me^.dX.isNegative)) then
        begin
        ap.Angle:= 1;
        valueResult:= v2
        end
    else
        begin
        ap.Angle:= -1;
        valueResult:= v1
        end;

    if valueResult <= 0 then
        valueResult:= BadTurn;

    TestFirePunch:= valueResult;
end;


function TestWhip(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
var valueResult, v1, v2: LongInt;
    x, y, trackFall: LongInt;
begin
    Targ:= Targ; // avoid compiler hint

    if Level = 1 then trackFall:= afTrackFall
    else trackFall:= 0;

    ap.ExplR:= 0;
    ap.Time:= 0;
    ap.Power:= 1;
    x:= hwRound(Me^.X);
    y:= hwRound(Me^.Y);

    // check left direction
    {first RateShove checks farthermost of two whip's AmmoShove attacks
    to encourage distant attacks (damaged hog is excluded from view of second
    RateShove call)}
    v1:= RateShove(Me, x - 13, y
            , 30, 30, 25
            , -1, -0.8, trackFall or afSetSkip);
    v1:= v1 +
        RateShove(Me, x - 2, y
            , 30, 30, 25
            , -1, -0.8, trackFall);
    // now try opposite direction
    v2:= RateShove(Me, x + 13, y
            , 30, 30, 25
            , 1, -0.8, trackFall or afSetSkip);
    v2:= v2 +
        RateShove(Me, x + 2, y
            , 30, 30, 25
            , 1, -0.8, trackFall);

    if (v2 > v1)
        or {don't encourage turning for no gain}((v2 = v1) and (not Me^.dX.isNegative)) then
        begin
        ap.Angle:= 1;
        valueResult:= v2
        end
    else
        begin
        ap.Angle:= -1;
        valueResult:= v1
        end;

    if valueResult <= 0 then
        valueResult:= BadTurn
    else
        inc(valueResult);

    TestWhip:= valueResult;
end;

function TestKamikaze(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
const step = 8;
var valueResult, i, v, tx: LongInt;
    trackFall: LongInt;
    t, d, x, y, dx, dy, cx: real;
begin
    ap.ExplR:= 0;
    ap.Time:= 0;
    ap.Power:= 1;

    if Level = 1 then
        trackFall:= afTrackFall
    else if Level = 2 then
        trackFall:= 0
    else
        exit(BadTurn);

    valueResult:= 0;
    v:= 0;

    x:= hwFloat2Float(Me^.X);
    y:= hwFloat2Float(Me^.Y);
    d:= sqrt(sqr(Targ.Point.X - x) + sqr(Targ.Point.Y - y));
    if d < 10 then
        begin
        dx:= 0;
        dy:= 8;
        ap.Angle:= 2048
        end
    else
        begin
        t:= step / d;
        dx:= (Targ.Point.X - x) * t;
        dy:= (Targ.Point.Y - y) * t;

        ap.Angle:= DxDy2AttackAnglef(dx, -dy)
        end;

    if dx >= 0 then cx:= 0.45 else cx:= -0.45;

    for i:= 0 to 512 div step - 2 do
        begin
        valueResult:= valueResult +
            RateShove(Me, trunc(x), trunc(y)
                , 30, 30, 25
                , cx, -0.9, trackFall or afSetSkip);

        x:= x + dx;
        y:= y + dy;
        end;
    if dx = 0 then
        begin
        x:= hwFloat2Float(Me^.X);
        y:= hwFloat2Float(Me^.Y);
        tx:= trunc(x);
        v:= RateShove(Me, tx, trunc(y)
                , 30, 30, 25
                , -cx, -0.9, trackFall);
        for i:= 1 to 512 div step - 2 do
            begin
            y:= y + dy;
            v:= v +
                RateShove(Me, tx, trunc(y)
                    , 30, 30, 25
                    , -cx, -0.9, trackFall or afSetSkip);
            end
        end;
    if v > valueResult then
        begin
        ap.Angle:= -2048;
        valueResult:= v
        end;

    v:= RateShove(Me, trunc(x), trunc(y)
            , 30, 30, 25
            , cx, -0.9, trackFall);
    valueResult:= valueResult + v - KillScore * friendlyfactor div 100 * 1024;

    if v < 65536 then
        inc(valueResult, RateExplosion(Me, trunc(x), trunc(y), 30));

    TestKamikaze:= valueResult;
end;

function TestHammer(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
var rate: LongInt;
begin
Level:= Level; // avoid compiler hint
Targ:= Targ;

ap.ExplR:= 0;
ap.Time:= 0;
ap.Power:= 1;
ap.Angle:= 0;

rate:= RateHammer(Me);
if rate = 0 then
    rate:= BadTurn;
TestHammer:= rate;
end;

function TestAirAttack(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
const cShift = 4;
var bombsSpeed, X, Y, dY: real;
    b: array[0..9] of boolean;
    dmg: array[0..9] of LongInt;
    fexit: boolean;
    i, t, valueResult: LongInt;
begin
ap.ExplR:= 0;
ap.Time:= 0;
if (Level > 3) or (cGravityf = 0) then
    exit(BadTurn);

ap.Angle:= 0;
ap.AttackPutX:= Targ.Point.X;
ap.AttackPutY:= Targ.Point.Y;

bombsSpeed:= hwFloat2Float(cBombsSpeed);
X:= Targ.Point.X - 135 - cShift; // hh center - cShift
X:= X - bombsSpeed * sqrt(((Targ.Point.Y + 128) * 2) / cGravityf);
Y:= -128;
dY:= 0;

for i:= 0 to 9 do
    begin
    b[i]:= true;
    dmg[i]:= 0
    end;
valueResult:= 0;

repeat
    X:= X + bombsSpeed;
    Y:= Y + dY;
    dY:= dY + cGravityf;
    fexit:= true;

    for i:= 0 to 9 do
        if b[i] then
            begin
            fexit:= false;
            if TestColl(trunc(X) + LongWord(i * 30), trunc(Y), 4) then
                begin
                b[i]:= false;
                dmg[i]:= RateExplosion(Me, trunc(X) + LongWord(i * 30), trunc(Y), 58)
                // 58 (instead of 60) for better prediction (hh moves after explosion of one of the rockets)
                end
            end;
until fexit or (Y > cWaterLine);

for i:= 0 to 5 do inc(valueResult, dmg[i]);
t:= valueResult;
ap.AttackPutX:= Targ.Point.X - 60;

for i:= 0 to 3 do
    begin
    dec(t, dmg[i]);
    inc(t, dmg[i + 6]);
    if t > valueResult then
        begin
        valueResult:= t;
        ap.AttackPutX:= Targ.Point.X - 30 - cShift + i * 30
        end
    end;

if valueResult <= 0 then
    valueResult:= BadTurn;
TestAirAttack:= valueResult;
end;


function TestTeleport(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
var
    i, failNum: longword;
    maxTop: longword;
begin
    TestTeleport := BadTurn;
    exit(BadTurn);
    Level:= Level; // avoid compiler hint
    //FillBonuses(true, [gtCase]);
    if bonuses.Count = 0 then
        begin
        if Me^.Health <= 100  then
            begin
            maxTop := Targ.Point.Y - cHHRadius * 2;

            while not TestColl(Targ.Point.X, maxTop, cHHRadius) and (maxTop > topY + cHHRadius * 2 + 1) do
                dec(maxTop, cHHRadius*2);
            if not TestColl(Targ.Point.X, maxTop + cHHRadius, cHHRadius) then
                begin
                ap.AttackPutX := Targ.Point.X;
                ap.AttackPutY := maxTop + cHHRadius;
                TestTeleport := Targ.Point.Y - maxTop;
                end;
            end;
        end
    else
        begin
        failNum := 0;
        repeat
            i := random(bonuses.Count);
            inc(failNum);
        until not TestColl(bonuses.ar[i].X, bonuses.ar[i].Y - cHHRadius - bonuses.ar[i].Radius, cHHRadius)
        or (failNum = bonuses.Count*2);

        if failNum < bonuses.Count*2 then
            begin
            ap.AttackPutX := bonuses.ar[i].X;
            ap.AttackPutY := bonuses.ar[i].Y - cHHRadius - bonuses.ar[i].Radius;
            TestTeleport := 0;
            end;
        end;
end;


procedure checkCakeWalk(Me, Gear: PGear; var ap: TAttackParams);
var i: Longword;
    v: LongInt;
begin
while (not TestColl(hwRound(Gear^.X), hwRound(Gear^.Y), 6)) and (Gear^.Y.Round < LongWord(LAND_HEIGHT)) do
    Gear^.Y:= Gear^.Y + _1;

for i:= 0 to 2040 do
    begin
    cakeStep(Gear);
    v:= RateExplosion(Me, hwRound(Gear^.X), hwRound(Gear^.Y), cakeDmg * 2, afTrackFall);
    if v > ap.Power then
        begin
        ap.ExplX:= hwRound(Gear^.X);
        ap.ExplY:= hwRound(Gear^.Y);
        ap.Power:= v
        end
    end;
end;

function TestCake(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
var valueResult, v1, v2: LongInt;
    cake: TGear;
begin
    Targ:= Targ; // avoid compiler hint

    if (Level > 2) then
        exit(BadTurn);

    ap.ExplR:= 0;
    ap.Time:= 0;
    ap.Power:= BadTurn; // use it as max score value in checkCakeWalk

    //FillChar(cake, sizeof(cake), 0);
    cake.Radius:= 7;
    cake.CollisionMask:= lfNotCurrentMask;
    cake.Hedgehog:= Me^.Hedgehog;

    // check left direction
    cake.Angle:= 3;
    cake.dX.isNegative:= true;
    cake.X:= Me^.X - _3;
    cake.Y:= Me^.Y;
    checkCakeWalk(Me, @cake, ap);
    v1:= ap.Power;

    // now try opposite direction
    cake.Angle:= 1;
    cake.dX.isNegative:= false;
    cake.X:= Me^.X + _3;
    cake.Y:= Me^.Y;
    checkCakeWalk(Me, @cake, ap);
    v2:= ap.Power;

    ap.Power:= 1;

    if (v2 > v1) then
        begin
        ap.Angle:= 1;
        valueResult:= v2
        end
    else
        begin
        ap.Angle:= -1;
        valueResult:= v1
        end;

    if valueResult <= 0 then
        valueResult:= BadTurn;

    TestCake:= valueResult;
end;

function TestDynamite(Me: PGear; Targ: TTarget; Level: LongInt; var ap: TAttackParams): LongInt;
var valueResult: LongInt;
    x, y, dx, dy: real;
    EX, EY, t: LongInt;
begin
Targ:= Targ; // avoid compiler hint

x:= hwFloat2Float(Me^.X) + hwSign(Me^.dX) * 7;
y:= hwFloat2Float(Me^.Y);
dx:= hwSign(Me^.dX) * 0.03;
dy:= 0;
t:= 5000;
repeat
    dec(t);
    x:= x + dx;
    dy:= dy + cGravityf;
    y:= y + dy;

    if TestColl(trunc(x), trunc(y), 3) then
        t:= 0;
until t = 0;

EX:= trunc(x);
EY:= trunc(y);

if Level = 1 then
    valueResult:= RateExplosion(Me, EX, EY, 76, afTrackFall or afErasesLand)
else
    valueResult:= RateExplosion(Me, EX, EY, 76);

if (valueResult > 0) then
    begin
    ap.Angle:= 0;
    ap.Power:= 1;
    ap.Time:= 0;
    ap.ExplR:= 150;
    ap.ExplX:= EX;
    ap.ExplY:= EY
    end else
    valueResult:= BadTurn;

TestDynamite:= valueResult
end;

end.