(*
* Hedgewars, a worms-like game
* Copyright (c) 2004, 2005, 2006 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*)
unit uGears;
interface
uses SDLh, uConsts;
{$INCLUDE options.inc}
const AllInactive: boolean = false;
type PGear = ^TGear;
TGearStepProcedure = procedure (Gear: PGear);
TGear = record
NextGear, PrevGear: PGear;
Active: Boolean;
State : Longword;
X : Double;
Y : Double;
dX: Double;
dY: Double;
Kind: TGearType;
Pos: Longword;
doStep: TGearStepProcedure;
Radius: integer;
Angle, Power : Longword;
DirAngle: Double;
Timer : LongWord;
Elasticity: Double;
Friction : Double;
Message : Longword;
Hedgehog: pointer;
Health, Damage: integer;
CollIndex: Longword;
Tag: integer;
Surf: PSDL_Surface;
end;
function AddGear(X, Y: integer; Kind: TGearType; State: Longword; const dX: Double=0.0; dY: Double=0.0; Timer: LongWord=0): PGear;
procedure ProcessGears;
procedure SetAllToActive;
procedure SetAllHHToActive;
procedure DrawGears(Surface: PSDL_Surface);
procedure FreeGearsList;
procedure AddMiscGears;
procedure AssignHHCoords;
var CurAmmoGear: PGear = nil;
GearsList: PGear = nil;
implementation
uses uWorld, uMisc, uStore, uConsole, uSound, uTeams, uRandom, uCollisions,
uLand, uIO, uLandGraphics, uAIMisc, uLocale, uAI;
var RopePoints: record
Count: Longword;
HookAngle: integer;
ar: array[0..300] of record
X, Y: Double;
dLen: Double;
b: boolean;
end;
end;
procedure DeleteGear(Gear: PGear); forward;
procedure doMakeExplosion(X, Y, Radius: integer; Mask: LongWord); forward;
procedure AmmoShove(Ammo: PGear; Damage, Power: integer); forward;
procedure AmmoFlameWork(Ammo: PGear); forward;
function CheckGearNear(Gear: PGear; Kind: TGearType; rX, rY: integer): PGear; forward;
procedure SpawnBoxOfSmth; forward;
procedure AfterAttack; forward;
procedure FindPlace(Gear: PGear; withFall: boolean; Left, Right: integer); forward;
{$INCLUDE GSHandlers.inc}
{$INCLUDE HHHandlers.inc}
const doStepHandlers: array[TGearType] of TGearStepProcedure = (
doStepCloud,
doStepBomb,
doStepHedgehog,
doStepGrenade,
doStepHealthTag,
doStepGrave,
doStepUFO,
doStepShotgunShot,
doStepPickHammer,
doStepRope,
doStepSmokeTrace,
doStepExplosion,
doStepMine,
doStepCase,
doStepDEagleShot,
doStepDynamite,
doStepTeamHealthSorter,
doStepBomb,
doStepCluster,
doStepShover,
doStepFlame,
doStepFirePunch,
doStepActionTimer,
doStepActionTimer,
doStepActionTimer,
doStepParachute,
doStepAirAttack,
doStepAirBomb
);
function AddGear(X, Y: integer; Kind: TGearType; State: Longword; const dX: Double=0.0; dY: Double=0.0; Timer: LongWord=0): PGear;
const Counter: Longword = 0;
begin
inc(Counter);
{$IFDEF DEBUGFILE}AddFileLog('AddGear: ('+inttostr(x)+','+inttostr(y)+'), d('+floattostr(dX)+','+floattostr(dY)+')');{$ENDIF}
New(Result);
{$IFDEF DEBUGFILE}AddFileLog('AddGear: handle = '+inttostr(integer(Result)));{$ENDIF}
FillChar(Result^, sizeof(TGear), 0);
Result.X:= X;
Result.Y:= Y;
Result.Kind := Kind;
Result.State:= State;
Result.Active:= true;
Result.dX:= dX;
Result.dY:= dY;
Result.doStep:= doStepHandlers[Kind];
Result.CollIndex:= High(Longword);
Result.Timer:= Timer;
if CurrentTeam <> nil then
Result.Hedgehog:= @CurrentTeam.Hedgehogs[CurrentTeam.CurrHedgehog];
case Kind of
gtAmmo_Bomb: begin
Result.Radius:= 4;
Result.Elasticity:= 0.6;
Result.Friction:= 0.995;
end;
gtHedgehog: begin
Result.Radius:= cHHRadius;
Result.Elasticity:= 0.35;
Result.Friction:= 0.999;
Result.Angle:= cMaxAngle div 2;
end;
gtAmmo_Grenade: begin
Result.Radius:= 4;
end;
gtHealthTag: begin
Result.Timer:= 1500;
end;
gtGrave: begin
Result.Radius:= 10;
Result.Elasticity:= 0.6;
end;
gtUFO: begin
Result.Radius:= 5;
Result.Timer:= 500;
Result.Elasticity:= 0.9
end;
gtShotgunShot: begin
Result.Timer:= 900;
Result.Radius:= 2
end;
gtPickHammer: begin
Result.Radius:= 10;
Result.Timer:= 4000
end;
gtSmokeTrace: begin
Result.X:= Result.X - 16;
Result.Y:= Result.Y - 16;
Result.State:= 8
end;
gtRope: begin
Result.Radius:= 3;
Result.Friction:= 500;
RopePoints.Count:= 0;
end;
gtExplosion: begin
Result.X:= Result.X - 25;
Result.Y:= Result.Y - 25;
end;
gtMine: begin
Result.Radius:= 3;
Result.Elasticity:= 0.55;
Result.Friction:= 0.995;
Result.Timer:= 3000;
end;
gtCase: begin
Result.Radius:= 16;
Result.Elasticity:= 0.4
end;
gtDEagleShot: begin
Result.Radius:= 1;
Result.Radius:= 1;
Result.Health:= 50
end;
gtDynamite: begin
Result.Radius:= 3;
Result.Elasticity:= 0.55;
Result.Friction:= 0.03;
Result.Timer:= 5000;
end;
gtClusterBomb: begin
Result.Radius:= 4;
Result.Elasticity:= 0.6;
Result.Friction:= 0.995;
end;
gtFlame: begin
Result.Angle:= Counter mod 64;
Result.Radius:= 1;
Result.Health:= 2;
Result.dY:= (getrandom - 0.8) * 0.03;
Result.dX:= (getrandom - 0.5) * 0.4
end;
gtFirePunch: begin
Result.Radius:= 15;
Result.Tag:= Y
end;
gtAirBomb: begin
Result.Radius:= 3;
end;
end;
if GearsList = nil then GearsList:= Result
else begin
GearsList.PrevGear:= Result;
Result.NextGear:= GearsList;
GearsList:= Result
end
end;
procedure DeleteGear(Gear: PGear);
var team: PTeam;
begin
if Gear.CollIndex < High(Longword) then DeleteCI(Gear);
if Gear.Surf <> nil then SDL_FreeSurface(Gear.Surf);
if Gear.Kind = gtHedgehog then
if CurAmmoGear <> nil then
begin
{$IFDEF DEBUGFILE}AddFileLog('DeleteGear: Sending gm_Destroy, hh handle = '+inttostr(integer(Gear)));{$ENDIF}
Gear.Message:= gm_Destroy;
CurAmmoGear.Message:= gm_Destroy;
exit
end else
begin
if Gear.Y >= cWaterLine then
AddGear(Round(Gear.X), Round(Gear.Y), gtHealthTag, max(Gear.Damage, Gear.Health)).Hedgehog:= Gear.Hedgehog;
team:= PHedgehog(Gear.Hedgehog).Team;
if CurrentTeam.Hedgehogs[CurrentTeam.CurrHedgehog].Gear = Gear then
FreeActionsList; // to avoid ThinkThread on drawned gear
PHedgehog(Gear.Hedgehog).Gear:= nil;
RecountTeamHealth(team);
end;
{$IFDEF DEBUGFILE}AddFileLog('DeleteGear: handle = '+inttostr(integer(Gear)));{$ENDIF}
if CurAmmoGear = Gear then CurAmmoGear:= nil;
if FollowGear = Gear then FollowGear:= nil;
if Gear.NextGear <> nil then Gear.NextGear.PrevGear:= Gear.PrevGear;
if Gear.PrevGear <> nil then Gear.PrevGear.NextGear:= Gear.NextGear
else begin
GearsList:= Gear^.NextGear;
if GearsList <> nil then GearsList.PrevGear:= nil
end;
Dispose(Gear)
end;
function CheckNoDamage: boolean; // returns TRUE in case of no damaged hhs
var Gear: PGear;
begin
Result:= true;
Gear:= GearsList;
while Gear <> nil do
begin
if Gear.Kind = gtHedgehog then
if Gear.Damage <> 0 then
begin
Result:= false;
if Gear.Health < Gear.Damage then Gear.Health:= 0
else dec(Gear.Health, Gear.Damage);
AddGear(Round(Gear.X), Round(Gear.Y) - 32, gtHealthTag, Gear.Damage).Hedgehog:= Gear.Hedgehog;
RenderHealth(PHedgehog(Gear.Hedgehog)^);
RecountTeamHealth(PHedgehog(Gear.Hedgehog)^.Team);
Gear.Damage:= 0
end;
Gear:= Gear.NextGear
end;
end;
procedure ProcessGears;
const delay: integer = cInactDelay;
step: (stDelay, stChDmg, stChWin, stSpawn, stNTurn) = stDelay;
var Gear, t: PGear;
{$IFDEF COUNTTICKS}
tickcntA, tickcntB: LongWord;
const cntSecTicks: LongWord = 0;
{$ENDIF}
begin
{$IFDEF COUNTTICKS}
asm
push eax
push edx
rdtsc
mov tickcntA, eax
mov tickcntB, edx
pop edx
pop eax
end;
{$ENDIF}
AllInactive:= true;
t:= GearsList;
while t<>nil do
begin
Gear:= t;
t:= Gear.NextGear;
if Gear.Active then Gear.doStep(Gear);
end;
if AllInactive then
case step of
stDelay: begin
dec(delay);
if delay = 0 then
begin
inc(step);
delay:= cInactDelay
end
end;
stChDmg: if CheckNoDamage then inc(step) else step:= stDelay;
stChWin: if not CheckForWin then inc(step) else step:= stDelay;
stSpawn: begin
if not isInMultiShoot then SpawnBoxOfSmth;
inc(step)
end;
stNTurn: begin
AwareOfExplosion(0, 0, 0);
if isInMultiShoot then isInMultiShoot:= false
else ParseCommand('/nextturn');
step:= Low(step)
end;
end;
if TurnTimeLeft > 0 then
if CurrentTeam <> nil then
if CurrentTeam.Hedgehogs[CurrentTeam.CurrHedgehog].Gear <> nil then
if ((CurrentTeam.Hedgehogs[CurrentTeam.CurrHedgehog].Gear.State and gstAttacking) = 0)
and not isInMultiShoot then dec(TurnTimeLeft);
inc(GameTicks);
{$IFDEF COUNTTICKS}
asm
push eax
push edx
rdtsc
sub eax, [tickcntA]
sbb edx, [tickcntB]
add [cntSecTicks], eax
pop edx
pop eax
end;
if (GameTicks and 1023) = 0 then
begin
cntTicks:= cntSecTicks shr 10;
{$IFDEF DEBUGFILE}
AddFileLog('<' + inttostr(cntTicks) + '>x1024 ticks');
{$ENDIF}
cntSecTicks:= 0
end;
{$ENDIF}
end;
procedure SetAllToActive;
var t: PGear;
begin
AllInactive:= false;
t:= GearsList;
while t<>nil do
begin
t.Active:= true;
t:= t.NextGear
end
end;
procedure SetAllHHToActive;
var t: PGear;
begin
AllInactive:= false;
t:= GearsList;
while t<>nil do
begin
if t.Kind = gtHedgehog then t.Active:= true;
t:= t.NextGear
end
end;
procedure DrawGears(Surface: PSDL_Surface);
var Gear: PGear;
i: Longword;
roplen: Double;
procedure DrawRopeLine(X1, Y1, X2, Y2: integer);
const nodlen = 5;
var i, x, y: integer;
t, k, ladd: Double;
begin
if (X1 = X2) and (Y1 = Y2) then
begin
OutError('WARNING: zero length rope line!');
exit
end;
if abs(X1 - X2) > abs(Y1 - Y2) then
begin
if X1 > X2 then
begin
i:= X1;
X1:= X2;
X2:= i;
i:= Y1;
Y1:= Y2;
Y2:= i
end;
k:= (Y2 - Y1) / (X2 - X1);
ladd:= sqrt(1 + sqr(k));
if X1 < 0 then
begin
t:= Y1 - 2 - k * X1;
X1:= 0
end else t:= Y1 - 2;
if X2 > cScreenWidth then X2:= cScreenWidth;
for x:= X1 to X2 do
begin
roplen:= roplen + ladd;
if roplen > nodlen then
begin
DrawGear(sRopeNode, x - 2, round(t) - 2, Surface);
roplen:= roplen - nodlen;
end;
t:= t + k;
end;
end else
begin
if Y1 > Y2 then
begin
i:= X1;
X1:= X2;
X2:= i;
i:= Y1;
Y1:= Y2;
Y2:= i
end;
k:= (X2 - X1) / (Y2 - Y1);
ladd:= sqrt(1 + sqr(k));
if Y1 < 0 then
begin
t:= X1 - 2 - k * Y1;
Y1:= 0
end else t:= X1 - 2;
if Y2 > cScreenHeight then Y2:= cScreenHeight;
for y:= Y1 to Y2 do
begin
roplen:= roplen + ladd;
if roplen > nodlen then
begin
DrawGear(sRopeNode, round(t) - 2, y - 2, Surface);
roplen:= roplen - nodlen;
end;
t:= t + k;
end;
end
end;
begin
Gear:= GearsList;
while Gear<>nil do
begin
case Gear.Kind of
gtCloud: DrawSprite(sprCloud , Round(Gear.X) + WorldDx, Round(Gear.Y) + WorldDy, Gear.State, Surface);
gtAmmo_Bomb: DrawSprite(sprBomb , Round(Gear.X) - 8 + WorldDx, Round(Gear.Y) - 8 + WorldDy, trunc(Gear.DirAngle), Surface);
gtHedgehog: DrawHedgehog(Round(Gear.X) - 14 + WorldDx, Round(Gear.Y) - 18 + WorldDy, hwSign(Gear.dX),
0, PHedgehog(Gear.Hedgehog).visStepPos div 2,
Surface);
gtAmmo_Grenade: DrawSprite(sprGrenade , Round(Gear.X) - 16 + WorldDx, Round(Gear.Y) - 16 + WorldDy, DxDy2Angle32(Gear.dY, Gear.dX), Surface);
gtHealthTag: if Gear.Surf <> nil then DrawCentered(Round(Gear.X) + WorldDx, Round(Gear.Y) + WorldDy, Gear.Surf, Surface);
gtGrave: DrawSpriteFromRect(PHedgehog(Gear.Hedgehog).Team.GraveRect, Round(Gear.X) + WorldDx - 16, Round(Gear.Y) + WorldDy - 16, 32, (GameTicks shr 7) and 7, Surface);
gtUFO: DrawSprite(sprUFO, Round(Gear.X) - 16 + WorldDx, Round(Gear.Y) - 16 + WorldDy, (GameTicks shr 7) mod 4, Surface);
gtSmokeTrace: if Gear.State < 8 then DrawSprite(sprSmokeTrace, Round(Gear.X) + WorldDx, Round(Gear.Y) + WorldDy, Gear.State, Surface);
gtRope: begin
roplen:= 0;
if RopePoints.Count > 0 then
begin
i:= 0;
while i < Pred(RopePoints.Count) do
begin
DrawRopeLine(Round(RopePoints.ar[i].X) + WorldDx, Round(RopePoints.ar[i].Y) + WorldDy,
Round(RopePoints.ar[Succ(i)].X) + WorldDx, Round(RopePoints.ar[Succ(i)].Y) + WorldDy);
inc(i)
end;
DrawRopeLine(Round(RopePoints.ar[i].X) + WorldDx, Round(RopePoints.ar[i].Y) + WorldDy,
Round(Gear.X) + WorldDx, Round(Gear.Y) + WorldDy);
DrawRopeLine(Round(Gear.X) + WorldDx, Round(Gear.Y) + WorldDy,
Round(PHedgehog(Gear.Hedgehog).Gear.X) + WorldDx, Round(PHedgehog(Gear.Hedgehog).Gear.Y) + WorldDy);
DrawSprite(sprRopeHook, Round(RopePoints.ar[0].X) + WorldDx - 16, Round(RopePoints.ar[0].Y) + WorldDy - 16, RopePoints.HookAngle, Surface);
end else
begin
DrawRopeLine(Round(Gear.X) + WorldDx, Round(Gear.Y) + WorldDy,
Round(PHedgehog(Gear.Hedgehog).Gear.X) + WorldDx, Round(PHedgehog(Gear.Hedgehog).Gear.Y) + WorldDy);
DrawSprite(sprRopeHook, Round(Gear.X) - 16 + WorldDx, Round(Gear.Y) - 16 + WorldDy, DxDy2Angle32(Gear.dY, Gear.dX), Surface);
end;
end;
gtExplosion: DrawSprite(sprExplosion50, Round(Gear.X) + WorldDx, Round(Gear.Y) + WorldDy, Gear.State, Surface);
gtMine: if ((Gear.State and gstAttacking) = 0)or((Gear.Timer and $3FF) < 420)
then DrawSprite(sprMineOff , Round(Gear.X) - 8 + WorldDx, Round(Gear.Y) - 8 + WorldDy, trunc(Gear.DirAngle), Surface)
else DrawSprite(sprMineOn , Round(Gear.X) - 8 + WorldDx, Round(Gear.Y) - 8 + WorldDy, trunc(Gear.DirAngle), Surface);
gtDynamite: DrawSprite2(sprDynamite, Round(Gear.X) - 16 + WorldDx, Round(Gear.Y) - 25 + WorldDy, Gear.Tag and 1, Gear.Tag shr 1, Surface);
gtCase: case Gear.Pos of
posCaseAmmo : DrawSprite(sprCase, Round(Gear.X) - 16 + WorldDx, Round(Gear.Y) - 16 + WorldDy, 0, Surface);
posCaseHealth: DrawSprite(sprFAid, Round(Gear.X) - 24 + WorldDx, Round(Gear.Y) - 24 + WorldDy, (GameTicks shr 6) mod 13, Surface);
end;
gtClusterBomb: DrawSprite(sprClusterBomb, Round(Gear.X) - 8 + WorldDx, Round(Gear.Y) - 8 + WorldDy, trunc(Gear.DirAngle), Surface);
gtCluster: DrawSprite(sprClusterParticle, Round(Gear.X) - 8 + WorldDx, Round(Gear.Y) - 8 + WorldDy, 0, Surface);
gtFlame: DrawSprite(sprFlame, Round(Gear.X) - 8 + WorldDx, Round(Gear.Y) - 8 + WorldDy,(GameTicks div 128 + Gear.Angle) mod 8, Surface);
gtAirBomb: DrawSprite(sprAirBomb , Round(Gear.X) - 16 + WorldDx, Round(Gear.Y) - 16 + WorldDy, DxDy2Angle32(Gear.dY, Gear.dX), Surface);
gtAirAttack: DrawSprite(sprAirplane, Round(Gear.X) - 60 + WorldDx, Round(Gear.Y) - 25 + WorldDy, 0, Surface);
end;
Gear:= Gear.NextGear
end;
end;
procedure FreeGearsList;
var t, tt: PGear;
begin
tt:= GearsList;
GearsList:= nil;
while tt<>nil do
begin
t:= tt;
tt:= tt.NextGear;
Dispose(t)
end;
end;
procedure AddMiscGears;
var i: integer;
begin
for i:= 0 to cCloudsNumber do
AddGear( - cScreenWidth + i * ((cScreenWidth * 2 + 2304) div cCloudsNumber), -140, gtCloud, random(4),
(0.5-random)*0.1, ((i mod 2) * 2 - 1) * (0.005 + 0.015*random));
AddGear(0, 0, gtATStartGame, 0, 0, 0, 2000);
if (GameFlags and gfForts) = 0 then
for i:= 0 to 3 do
FindPlace(AddGear(0, 0, gtMine, 0), false, 0, 2048);
end;
procedure doMakeExplosion(X, Y, Radius: integer; Mask: LongWord);
var Gear: PGear;
dmg: integer;
begin
TargetPoint.X:= NoPointX;
{$IFDEF DEBUGFILE}if Radius > 3 then AddFileLog('Explosion: at (' + inttostr(x) + ',' + inttostr(y) + ')');{$ENDIF}
DrawExplosion(X, Y, Radius);
if Radius = 50 then AddGear(X, Y, gtExplosion, 0);
if (Mask and EXPLAutoSound)<>0 then PlaySound(sndExplosion);
if (Mask and EXPLAllDamageInRadius)=0 then Radius:= Radius shl 1;
Gear:= GearsList;
while Gear <> nil do
begin
dmg:= Radius - Round(sqrt(sqr(Gear.X - X) + sqr(Gear.Y - Y)));
if dmg > 0 then
begin
dmg:= dmg shr 1;
case Gear.Kind of
gtHedgehog,
gtMine,
gtCase,
gtFlame: begin
if (Mask and EXPLNoDamage) = 0 then inc(Gear.Damage, dmg);
if ((Mask and EXPLDoNotTouchHH) = 0) or (Gear.Kind <> gtHedgehog) then
begin
Gear.dX:= Gear.dX + dmg / 200 * hwSign(Gear.X - X);
Gear.dY:= Gear.dY + dmg / 200 * hwSign(Gear.Y - Y);
Gear.Active:= true;
FollowGear:= Gear
end;
end;
gtGrave: begin
Gear.dY:= - dmg / 250;
Gear.Active:= true;
end;
end;
end;
Gear:= Gear.NextGear
end;
uAIMisc.AwareOfExplosion(0, 0, 0)
end;
procedure AmmoShove(Ammo: PGear; Damage, Power: integer);
var t: PGearArray;
i: integer;
begin
t:= CheckGearsCollision(Ammo);
i:= t.Count;
while i > 0 do
begin
dec(i);
if (t.ar[i].State and gstNoDamage) = 0 then
case t.ar[i].Kind of
gtHedgehog,
gtMine,
gtCase: begin
inc(t.ar[i].Damage, Damage);
t.ar[i].dX:= Ammo.dX * Power * 0.01;
t.ar[i].dY:= Ammo.dY * Power * 0.01;
t.ar[i].Active:= true;
DeleteCI(t.ar[i]);
FollowGear:= t.ar[i]
end;
end
end;
SetAllToActive
end;
procedure AssignHHCoords;
var Team: PTeam;
i, t: integer;
begin
Team:= TeamsList;
t:= 0;
while Team <> nil do
begin
for i:= 0 to cMaxHHIndex do
with Team.Hedgehogs[i] do
if Gear <> nil then
if (GameFlags and gfForts) = 0 then FindPlace(Gear, false, 0, 2048)
else FindPlace(Gear, false, t, t + 1024);
inc(t, 1024);
Team:= Team.Next
end
end;
function CheckGearNear(Gear: PGear; Kind: TGearType; rX, rY: integer): PGear;
var t: PGear;
begin
t:= GearsList;
rX:= sqr(rX);
rY:= sqr(rY);
while t <> nil do
begin
if (t <> Gear) and (t.Kind = Kind) then
if sqr(Gear.X - t.X) / rX + sqr(Gear.Y - t.Y) / rY <= 1 then
begin
Result:= t;
exit
end;
t:= t.NextGear
end;
Result:= nil
end;
procedure AmmoFlameWork(Ammo: PGear);
var t: PGear;
begin
t:= GearsList;
while t <> nil do
begin
if (t.Kind = gtHedgehog) and (t.Y < Ammo.Y) then
if sqr(Ammo.X - t.X) + sqr(Ammo.Y - t.Y - cHHRadius) * 2 <= sqr(4) then
begin
inc(t.Damage, 5);
t.dX:= t.dX + (t.X - Ammo.X) * 0.02;
t.dY:= - 0.25;
t.Active:= true;
DeleteCI(t);
FollowGear:= t
end;
t:= t.NextGear
end;
end;
function CheckGearsNear(mX, mY: integer; Kind: TGearsType; rX, rY: integer): PGear;
var t: PGear;
begin
t:= GearsList;
rX:= sqr(rX);
rY:= sqr(rY);
while t <> nil do
begin
if t.Kind in Kind then
if sqr(mX - t.X) / rX + sqr(mY - t.Y) / rY <= 1 then
begin
Result:= t;
exit
end;
t:= t.NextGear
end;
Result:= nil
end;
function CountGears(Kind: TGearType): Longword;
var t: PGear;
begin
Result:= 0;
t:= GearsList;
while t <> nil do
begin
if t.Kind = Kind then inc(Result);
t:= t.NextGear
end;
end;
procedure SpawnBoxOfSmth;
begin
if (CountGears(gtCase) > 2) or (getrandom(3) <> 0) then exit;
FollowGear:= AddGear(0, 0, gtCase, 0);
FollowGear.Health:= 25;
FollowGear.Pos:= posCaseHealth;
FindPlace(FollowGear, true, 0, 2048)
end;
procedure FindPlace(Gear: PGear; withFall: boolean; Left, Right: integer);
function CountNonZeroz(x, y, r: integer): integer;
var i: integer;
begin
Result:= 0;
if (y and $FFFFFC00) <> 0 then exit;
for i:= max(x - r, 0) to min(x + r, 2043) do
if Land[y, i] <> 0 then inc(Result)
end;
var fx, x: integer;
y, sy: integer;
ar: array[0..512] of TPoint;
cnt, delta: Longword;
begin
fx:= Left + integer(GetRandom(Right - Left));
x:= fx;
delta:= 130;
repeat
repeat
inc(x, Gear.Radius);
if x > Right then x:= Left + (x mod (Right - left));
cnt:= 0;
y:= -Gear.Radius * 2;
while y < 1023 do
begin
repeat
inc(y, 2);
until (y > 1023) or (CountNonZeroz(x, y, Gear.Radius - 1) = 0);
sy:= y;
repeat
inc(y);
until (y > 1023) or (CountNonZeroz(x, y, Gear.Radius - 1) <> 0);
if (y - sy > Gear.Radius * 2)
and (y < 1023)
and (CheckGearsNear(x, y - Gear.Radius, [gtHedgehog, gtMine, gtCase], 110, 110) = nil) then
begin
ar[cnt].X:= x;
if withFall then ar[cnt].Y:= sy + Gear.Radius
else ar[cnt].Y:= y - Gear.Radius;
inc(cnt)
end;
inc(y, 80)
end;
if cnt > 0 then
with ar[GetRandom(cnt)] do
begin
Gear.X:= x;
Gear.Y:= y;
{$IFDEF DEBUGFILE}
AddFileLog('Assigned Gear ' + inttostr(integer(Gear)) +
' coordinates (' + inttostr(x) +
',' + inttostr(y) + ')');
{$ENDIF}
exit
end
until (x - Gear.Radius < fx) and (x + Gear.Radius > fx);
dec(Delta, 20)
until (Delta < 70);
OutError('Couldn''t find place for Gear ' + inttostr(integer(Gear)), false);
DeleteGear(Gear)
end;
initialization
finalization
FreeGearsList;
end.