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Bullet.es
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Bullet.es
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/* Copyright (c) 2002-2012 Croteam Ltd.
This program is free software; you can redistribute it and/or modify
it under the terms of version 2 of the GNU General Public License as published by
the Free Software Foundation
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 Street, Fifth Floor, Boston, MA 02110-1301 USA. */
502
%{
#include "StdH.h"
%}
uses "Entities/BasicEffects";
uses "Engine/Classes/MovableEntity";
// input parameters for bullet
event EBulletInit {
CEntityPointer penOwner, // who launched it
FLOAT fDamage, // damage
};
%{
void CBullet_OnPrecache(CDLLEntityClass *pdec, INDEX iUser)
{
pdec->PrecacheClass(CLASS_BASIC_EFFECT, BET_BULLETSTAINSTONE);
pdec->PrecacheClass(CLASS_BASIC_EFFECT, BET_BULLETSTAINSAND);
pdec->PrecacheClass(CLASS_BASIC_EFFECT, BET_BULLETSTAINREDSAND);
pdec->PrecacheClass(CLASS_BASIC_EFFECT, BET_BULLETSTAINWATER);
pdec->PrecacheClass(CLASS_BASIC_EFFECT, BET_BULLETSTAINSTONENOSOUND);
pdec->PrecacheClass(CLASS_BASIC_EFFECT, BET_BULLETSTAINSANDNOSOUND);
pdec->PrecacheClass(CLASS_BASIC_EFFECT, BET_BULLETSTAINREDSANDNOSOUND);
pdec->PrecacheClass(CLASS_BASIC_EFFECT, BET_BULLETSTAINWATERNOSOUND);
pdec->PrecacheClass(CLASS_BASIC_EFFECT, BET_BLOODSPILL);
pdec->PrecacheClass(CLASS_BASIC_EFFECT, BET_BULLETTRAIL);
}
%}
class export CBullet : CEntity {
name "Bullet";
thumbnail "";
features "ImplementsOnPrecache";
properties:
1 CEntityPointer m_penOwner, // entity which owns it
2 FLOAT m_fDamage = 0.0f, // damage
3 FLOAT3D m_vTarget = FLOAT3D(0,0,0), // bullet target point in space
4 FLOAT3D m_vTargetCopy = FLOAT3D(0,0,0), // copy of bullet target point in space for jitter
6 FLOAT3D m_vHitPoint = FLOAT3D(0,0,0), // hit point
8 INDEX m_iBullet = 0, // bullet for lerped launch
9 enum DamageType m_EdtDamage = DMT_BULLET, // damage type
10 FLOAT m_fBulletSize = 0.0f, // bullet can have radius, for hitting models only
components:
1 class CLASS_BASIC_EFFECT "Classes\\BasicEffect.ecl"
functions:
/************************************************************
* BULLET LAUNCH *
************************************************************/
// set bullet damage
void SetDamage(FLOAT fDamage) {
m_fDamage = fDamage;
};
// calc jitter target
void CalcTarget(FLOAT fRange) {
// destination in bullet direction
AnglesToDirectionVector(GetPlacement().pl_OrientationAngle, m_vTarget);
m_vTarget *= fRange;
m_vTarget += GetPlacement().pl_PositionVector;
m_vTargetCopy = m_vTarget;
};
void CalcTarget(CEntity *pen, FLOAT fRange) {
FLOAT3D vTarget;
// target body
EntityInfo *peiTarget = (EntityInfo*) (pen->GetEntityInfo());
GetEntityInfoPosition(pen, peiTarget->vTargetCenter, vTarget);
// calculate
m_vTarget = (vTarget - GetPlacement().pl_PositionVector).Normalize();
m_vTarget *= fRange;
m_vTarget += GetPlacement().pl_PositionVector;
m_vTargetCopy = m_vTarget;
};
// calc jitter target - !!! must call CalcTarget first !!!
void CalcJitterTarget(FLOAT fR) {
FLOAT3D vJitter;
/* My Sphere
FLOAT fXZ = FRnd()*360.0f;
FLOAT fXY = FRnd()*360.0f;
// sphere
fR *= FRnd();
vJitter(1) = CosFast(fXZ)*CosFast(fXY)*fR;
vJitter(2) = CosFast(fXZ)*SinFast(fXY)*fR;
vJitter(3) = SinFast(fXZ)*fR;*/
// comp graphics algorithms sphere
FLOAT fZ = FRnd()*2.0f - 1.0f;
FLOAT fA = FRnd()*360.0f;
FLOAT fT = Sqrt(1-(fZ*fZ));
vJitter(1) = fT * CosFast(fA);
vJitter(2) = fT * SinFast(fA);
vJitter(3) = fZ;
vJitter = vJitter*fR*FRnd();
// target
m_vTarget = m_vTargetCopy + vJitter;
};
// calc jitter target asymetric - !!! must call CalcTarget first !!!
void CalcJitterTargetFixed(FLOAT fX, FLOAT fY, FLOAT fJitter) {
FLOAT fRndX = FRnd()*2.0f - 1.0f;
FLOAT fRndY = FRnd()*2.0f - 1.0f;
FLOAT3D vX, vY;
const FLOATmatrix3D &m=GetRotationMatrix();
vX(1) = m(1,1); vX(2) = m(2,1); vX(3) = m(3,1);
vY(1) = m(1,2); vY(2) = m(2,2); vY(3) = m(3,2);
// target
m_vTarget = m_vTargetCopy + (vX*(fX+fRndX*fJitter)) + (vY*(fY+fRndY*fJitter));
};
// launch one bullet
void LaunchBullet(BOOL bSound, BOOL bTrail, BOOL bHitFX)
{
// cast a ray to find bullet target
CCastRay crRay( m_penOwner, GetPlacement().pl_PositionVector, m_vTarget);
crRay.cr_bHitPortals = TRUE;
crRay.cr_bHitTranslucentPortals = TRUE;
crRay.cr_ttHitModels = CCastRay::TT_COLLISIONBOX;
crRay.cr_bPhysical = FALSE;
crRay.cr_fTestR = m_fBulletSize;
FLOAT3D vHitDirection;
AnglesToDirectionVector(GetPlacement().pl_OrientationAngle, vHitDirection);
INDEX ctCasts = 0;
while( ctCasts<10)
{
if(ctCasts == 0)
{
// perform first cast
GetWorld()->CastRay(crRay);
}
else
{
// next casts
GetWorld()->ContinueCast(crRay);
}
ctCasts++;
// stop casting if nothing hit
if (crRay.cr_penHit==NULL)
{
break;
}
// apply damage
const FLOAT fDamageMul = GetSeriousDamageMultiplier(m_penOwner);
InflictDirectDamage(crRay.cr_penHit, m_penOwner, m_EdtDamage, m_fDamage*fDamageMul,
crRay.cr_vHit, vHitDirection);
m_vHitPoint = crRay.cr_vHit;
// if brush hitted
if (crRay.cr_penHit->GetRenderType()==RT_BRUSH && crRay.cr_pbpoBrushPolygon!=NULL)
{
CBrushPolygon *pbpo = crRay.cr_pbpoBrushPolygon;
FLOAT3D vHitNormal = FLOAT3D(pbpo->bpo_pbplPlane->bpl_plAbsolute);
// obtain surface type
INDEX iSurfaceType = pbpo->bpo_bppProperties.bpp_ubSurfaceType;
BulletHitType bhtType = BHT_BRUSH_STONE;
// get content type
INDEX iContent = pbpo->bpo_pbscSector->GetContentType();
CContentType &ct = GetWorld()->wo_actContentTypes[iContent];
bhtType=(BulletHitType) GetBulletHitTypeForSurface(iSurfaceType);
// if this is under water polygon
if( ct.ct_ulFlags&CTF_BREATHABLE_GILLS)
{
// if we hit water surface
if( iSurfaceType==SURFACE_WATER)
{
vHitNormal = -vHitNormal;
bhtType=BHT_BRUSH_WATER;
}
// if we hit stone under water
else
{
bhtType=BHT_BRUSH_UNDER_WATER;
}
}
// spawn hit effect
BOOL bPassable = pbpo->bpo_ulFlags & (BPOF_PASSABLE|BPOF_SHOOTTHRU);
if (!bPassable || iSurfaceType==SURFACE_WATER) {
SpawnHitTypeEffect(this, bhtType, bSound, vHitNormal, crRay.cr_vHit, vHitDirection, FLOAT3D(0.0f, 0.0f, 0.0f));
}
if(!bPassable) {
break;
}
// if not brush
} else {
// if flesh entity
if (crRay.cr_penHit->GetEntityInfo()!=NULL) {
if( ((EntityInfo*)crRay.cr_penHit->GetEntityInfo())->Eeibt == EIBT_FLESH)
{
CEntity *penOfFlesh = crRay.cr_penHit;
FLOAT3D vHitNormal = (GetPlacement().pl_PositionVector-m_vTarget).Normalize();
FLOAT3D vOldHitPos = crRay.cr_vHit;
FLOAT3D vDistance;
// look behind the entity (for back-stains)
GetWorld()->ContinueCast(crRay);
if( crRay.cr_penHit!=NULL && crRay.cr_pbpoBrushPolygon!=NULL &&
crRay.cr_penHit->GetRenderType()==RT_BRUSH)
{
vDistance = crRay.cr_vHit-vOldHitPos;
vHitNormal = FLOAT3D(crRay.cr_pbpoBrushPolygon->bpo_pbplPlane->bpl_plAbsolute);
}
else
{
vDistance = FLOAT3D(0.0f, 0.0f, 0.0f);
vHitNormal = FLOAT3D(0,0,0);
}
if(IsOfClass(penOfFlesh, "Gizmo") ||
IsOfClass(penOfFlesh, "Beast"))
{
// spawn green blood hit spill effect
SpawnHitTypeEffect(this, BHT_ACID, bSound, vHitNormal, crRay.cr_vHit, vHitDirection, vDistance);
}
else
{
// spawn red blood hit spill effect
SpawnHitTypeEffect(this, BHT_FLESH, bSound, vHitNormal, crRay.cr_vHit, vHitDirection, vDistance);
}
break;
}
}
// stop casting ray if not brush
break;
}
}
if( bTrail)
{
SpawnTrail();
}
};
// destroy yourself
void DestroyBullet(void) {
Destroy();
};
/************************************************************
* EFFECTS *
************************************************************/
// spawn trail of this bullet
void SpawnTrail(void)
{
// get bullet path positions
const FLOAT3D &v0 = GetPlacement().pl_PositionVector;
const FLOAT3D &v1 = m_vHitPoint;
// calculate distance
FLOAT3D vD = v1-v0;
FLOAT fD = vD.Length();
// if too short
if (fD<1.0f) {
// no trail
return;
}
// length must be such that it doesn't get out of path
FLOAT fLen = Min(20.0f, fD);
// position is random, but it must not make trail go out of path
FLOAT3D vPos;
if (fLen<fD) {
vPos = Lerp(v0, v1, FRnd()*(fD-fLen)/fD);
} else {
vPos = v0;
}
ESpawnEffect ese;
UBYTE ubRndH = UBYTE( 8+FRnd()*32);
UBYTE ubRndS = UBYTE( 8+FRnd()*32);
UBYTE ubRndV = UBYTE( 224+FRnd()*32);
UBYTE ubRndA = UBYTE( 32+FRnd()*128);
ese.colMuliplier = HSVToColor(ubRndH, ubRndS, ubRndV)|ubRndA;
ese.betType = BET_BULLETTRAIL;
ese.vNormal = vD/fD;
ese.vStretch = FLOAT3D(0.1f, fLen, 1.0f);
// spawn effect
FLOAT3D vBulletIncommingDirection;
vBulletIncommingDirection = (m_vTarget-GetPlacement().pl_PositionVector).Normalize();
CPlacement3D plHit = CPlacement3D(vPos-vBulletIncommingDirection*0.1f, GetPlacement().pl_OrientationAngle);
CEntityPointer penHit = CreateEntity(plHit , CLASS_BASIC_EFFECT);
penHit->Initialize(ese);
}
procedures:
Main(EBulletInit eInit)
{
// remember the initial parameters
ASSERT(eInit.penOwner!=NULL);
m_penOwner = eInit.penOwner;
m_fDamage = eInit.fDamage;
InitAsVoid();
SetPhysicsFlags(EPF_MODEL_IMMATERIAL);
SetCollisionFlags(ECF_IMMATERIAL);
// for lerped launch
m_iBullet = 0;
return;
};
};