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fteqw/plugins/bullet/bulletplug.cpp

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/*
Copyright (C) 1996-1997 Id Software, Inc.
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; either version 2
of the License, or (at your option) any later version.
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.
*/
//if we're not building as an fte-specific plugin, we must be being built as part of the fte engine itself.
//(no, we don't want to act as a plugin for ezquake...)
#ifndef FTEPLUGIN
#define FTEENGINE
#define FTEPLUGIN
#define pCvar_Register Cvar_Get
#define pCvar_GetNVFDG Cvar_Get2
#define pCvar_GetFloat(x) Cvar_FindVar(x)->value
#define pSys_Error Sys_Error
#define Plug_Init Plug_Bullet_Init
#pragma comment(lib,"../../plugins/bullet/libs/bullet_dbg.lib")
#endif
#include "quakedef.h"
#include "../plugin.h"
#include "../engine.h"
#include "pr_common.h"
#include "com_mesh.h"
#ifndef FTEENGINE
#define BZ_Malloc malloc
#define BZ_Free free
#define Z_Free BZ_Free
//#define vec3_origin vec3_origin_
//static vec3_t vec3_origin;
#define VectorCompare VectorCompare_
static int VectorCompare (const pvec3_t v1, const pvec3_t v2)
{
int i;
for (i=0 ; i<3 ; i++)
if (v1[i] != v2[i])
return 0;
return 1;
}
#endif
static rbeplugfuncs_t *rbefuncs;
//============================================================================
// physics engine support
//============================================================================
#define DEG2RAD(d) (d * M_PI * (1/180.0f))
#define RAD2DEG(d) ((d*180) / M_PI)
#include "btBulletDynamicsCommon.h"
//not sure where these are going. seems to be an issue only on windows.
#ifndef max
#define max(a,b) ((a) > (b) ? (a) : (b))
#endif
#ifndef min
#define min(a,b) ((a) < (b) ? (a) : (b))
#endif
static void World_Bullet_RunCmd(world_t *world, rbecommandqueue_t *cmd);
static cvar_t *physics_bullet_maxiterationsperframe;
static cvar_t *physics_bullet_framerate;
static cvar_t *pr_meshpitch;
void World_Bullet_Init(void)
{
physics_bullet_maxiterationsperframe = cvarfuncs->GetNVFDG("physics_bullet_maxiterationsperframe", "10", 0, "FIXME: should be 1 when CCD is working properly.", "Bullet");
physics_bullet_framerate = cvarfuncs->GetNVFDG("physics_bullet_framerate", "60", 0, "Bullet physics run at a fixed framerate in order to preserve numerical stability (interpolation is used to smooth out the result). Higher framerates are of course more demanding.", "Bullet");
pr_meshpitch = cvarfuncs->GetNVFDG("r_meshpitch", "-1", 0, "", "Bullet");
}
typedef struct bulletcontext_s
{
rigidbodyengine_t funcs;
bool hasextraobjs;
// void *ode_space;
// void *ode_contactgroup;
// number of constraint solver iterations to use (for dWorldStepFast)
// int ode_iterations;
// actual step (server frametime / ode_iterations)
// vec_t ode_step;
// max velocity for a 1-unit radius object at current step to prevent
// missed collisions
// vec_t ode_movelimit;
rbecommandqueue_t *cmdqueuehead;
rbecommandqueue_t *cmdqueuetail;
world_t *gworld;
btBroadphaseInterface *broadphase;
btDefaultCollisionConfiguration *collisionconfig;
btCollisionDispatcher *collisiondispatcher;
btSequentialImpulseConstraintSolver *solver;
btDiscreteDynamicsWorld *dworld;
btOverlapFilterCallback *ownerfilter;
} bulletcontext_t;
class QCFilterCallback : public btOverlapFilterCallback
{
// return true when pairs need collision
virtual bool needBroadphaseCollision(btBroadphaseProxy* proxy0,btBroadphaseProxy* proxy1) const
{
//dimensions don't collide
bool collides = (proxy0->m_collisionFilterGroup & proxy1->m_collisionFilterMask) != 0;
collides = collides && (proxy1->m_collisionFilterGroup & proxy0->m_collisionFilterMask);
//owners don't collide (unless one is world, obviouslyish)
if (collides)
{
auto b1 = (btRigidBody*)proxy0->m_clientObject;
auto b2 = (btRigidBody*)proxy1->m_clientObject;
//don't let two qc-controlled entities collide in Bullet, that's the job of quake.
if (b1->isStaticOrKinematicObject() && b2->isStaticOrKinematicObject())
return false;
auto e1 = (wedict_t*)b1->getUserPointer();
auto e2 = (wedict_t*)b2->getUserPointer();
if (e1&&e2)
{
if ((e1->v->solid == SOLID_TRIGGER && e2->v->solid != SOLID_BSP) ||
(e2->v->solid == SOLID_TRIGGER && e1->v->solid != SOLID_BSP))
return false; //triggers only collide with bsp objects.
if (e1->entnum && e2->entnum)
collides = e1->v->owner != e2->entnum && e2->v->owner != e1->entnum;
}
}
return collides;
}
};
static void QDECL World_Bullet_End(world_t *world)
{
auto ctx = reinterpret_cast<bulletcontext_t*>(world->rbe);
world->rbe = nullptr;
delete ctx->dworld;
delete ctx->solver;
delete ctx->collisionconfig;
delete ctx->collisiondispatcher;
delete ctx->broadphase;
delete ctx->ownerfilter;
Z_Free(ctx);
}
static void QDECL World_Bullet_RemoveJointFromEntity(world_t *world, wedict_t *ed)
{
ed->rbe.joint_type = 0;
// if(ed->rbe.joint)
// dJointDestroy((dJointID)ed->rbe.joint);
ed->rbe.joint.joint = NULL;
}
static void QDECL World_Bullet_RemoveFromEntity(world_t *world, wedict_t *ed)
{
auto ctx = reinterpret_cast<bulletcontext_t*>(world->rbe);
btRigidBody *body;
btCollisionShape *geom;
if (!ed->rbe.physics)
return;
// entity is not physics controlled, free any physics data
ed->rbe.physics = qfalse;
body = (btRigidBody*)ed->rbe.body.body;
ed->rbe.body.body = NULL;
if (body)
ctx->dworld->removeRigidBody (body);
geom = (btCollisionShape*)ed->rbe.body.geom;
ed->rbe.body.geom = NULL;
if (ed->rbe.body.geom)
delete geom;
//FIXME: joints
rbefuncs->ReleaseCollisionMesh(ed);
if(ed->rbe.massbuf)
BZ_Free(ed->rbe.massbuf);
ed->rbe.massbuf = NULL;
}
static bool NegativeMeshPitch(world_t *world, wedict_t *ent)
{
if (ent->v->modelindex)
{
model_t *model = world->Get_CModel(world, ent->v->modelindex);
if (model && (model->type == mod_alias || model->type == mod_halflife))
return pr_meshpitch->value < 0;
return false;
}
return false;
}
static btTransform transformFromQuake(world_t *world, wedict_t *ent)
{
vec3_t forward, left, up;
if (NegativeMeshPitch(world, ent))
{
pvec3_t iangles = {-ent->v->angles[0], ent->v->angles[1], ent->v->angles[2]};
rbefuncs->AngleVectors(iangles, forward, left, up);
}
else
rbefuncs->AngleVectors(ent->v->angles, forward, left, up);
VectorNegate(left, left);
return btTransform(btMatrix3x3(forward[0], forward[1], forward[2], left[0], left[1], left[2], up[0], up[1], up[2]), btVector3(ent->v->origin[0], ent->v->origin[1], ent->v->origin[2]));
}
static void World_Bullet_Frame_JointFromEntity(world_t *world, wedict_t *ed)
{
auto rbe = reinterpret_cast<bulletcontext_t*>(world->rbe);
btTypedConstraint *j = nullptr;
btRigidBody *b1 = nullptr;
btRigidBody *b2 = nullptr;
int movetype = 0;
int jointtype = 0;
int enemy = 0, aiment = 0;
wedict_t *e1, *e2;
// vec_t CFM, ERP, FMax;
vec_t Stop;
// vec_t Vel;
vec3_t forward;
movetype = ed->v->movetype;
jointtype = ed->xv->jointtype;
enemy = ed->v->enemy;
aiment = ed->v->aiment;
btVector3 origin(ed->v->origin[0], ed->v->origin[1], ed->v->origin[2]);
btVector3 velocity(ed->v->velocity[0], ed->v->velocity[1], ed->v->velocity[2]);
btVector3 movedir(ed->v->movedir[0], ed->v->movedir[1], ed->v->movedir[2]);
if(movetype == MOVETYPE_PHYSICS)
jointtype = 0; // can't have both
e1 = (wedict_t*)PROG_TO_EDICT(world->progs, enemy);
b1 = (btRigidBody*)e1->rbe.body.body;
if(ED_ISFREE(e1) || !b1)
enemy = 0;
e2 = (wedict_t*)PROG_TO_EDICT(world->progs, aiment);
b2 = (btRigidBody*)e2->rbe.body.body;
if(ED_ISFREE(e2) || !b2)
aiment = 0;
// see http://www.ode.org/old_list_archives/2006-January/017614.html
// we want to set ERP? make it fps independent and work like a spring constant
// note: if movedir[2] is 0, it becomes ERP = 1, CFM = 1.0 / (H * K)
if(movedir[0] > 0 && movedir[1] > 0)
{
// float K = movedir[0];
// float D = movedir[1];
// float R = 2.0 * D * sqrt(K); // we assume D is premultiplied by sqrt(sprungMass)
// CFM = 1.0 / (rbe->ode_step * K + R); // always > 0
// ERP = rbe->ode_step * K * CFM;
// Vel = 0;
// FMax = 0;
Stop = movedir[2];
}
else if(movedir[1] < 0)
{
// CFM = 0;
// ERP = 0;
// Vel = movedir[0];
// FMax = -movedir[1]; // TODO do we need to multiply with world.physics.ode_step?
Stop = movedir[2] > 0 ? movedir[2] : BT_INFINITY;
}
else // movedir[0] > 0, movedir[1] == 0 or movedir[0] < 0, movedir[1] >= 0
{
// CFM = 0;
// ERP = 0;
// Vel = 0;
// FMax = 0;
Stop = BT_INFINITY;
}
if(jointtype == ed->rbe.joint_type && VectorCompare(origin, ed->rbe.joint_origin) && VectorCompare(velocity, ed->rbe.joint_velocity) && VectorCompare(ed->v->angles, ed->rbe.joint_angles) && enemy == ed->rbe.joint_enemy && aiment == ed->rbe.joint_aiment && VectorCompare(movedir, ed->rbe.joint_movedir))
return; // nothing to do
if(ed->rbe.joint.joint)
{
j = (btTypedConstraint*)ed->rbe.joint.joint;
rbe->dworld->removeConstraint(j);
ed->rbe.joint.joint = nullptr;
delete j;
}
if (!jointtype)
return;
btVector3 b1org(0,0,0), b2org(0,0,0);
if(enemy)
b1org.setValue(e1->v->origin[0], e1->v->origin[1], e1->v->origin[2]);
if(aiment)
b2org.setValue(e2->v->origin[0], e2->v->origin[1], e2->v->origin[2]);
ed->rbe.joint_type = jointtype;
ed->rbe.joint_enemy = enemy;
ed->rbe.joint_aiment = aiment;
VectorCopy(origin, ed->rbe.joint_origin);
VectorCopy(velocity, ed->rbe.joint_velocity);
VectorCopy(ed->v->angles, ed->rbe.joint_angles);
VectorCopy(movedir, ed->rbe.joint_movedir);
rbefuncs->AngleVectors(ed->v->angles, forward, nullptr, nullptr);
//Con_Printf("making new joint %i\n", (int) (ed - prog->edicts));
switch(jointtype)
{
case JOINTTYPE_POINT:
j = new btPoint2PointConstraint(*b1, *b2, btVector3(b1org - origin), btVector3(b2org - origin));
break;
/* case JOINTTYPE_HINGE:
btHingeConstraint *h = new btHingeConstraint(*b1, *b2, btVector3(b1org - origin), btVector3(b2org - origin), aa, ab, ref);
j = h;
if (h)
{
h->setLimit(-Stop, Stop, softness, bias, relaxation);
h->setAxis(btVector3(forward[0], forward[1], forward[2]));
// h->dJointSetHingeParam(j, dParamFMax, FMax);
// h->dJointSetHingeParam(j, dParamHiStop, Stop);
// h->dJointSetHingeParam(j, dParamLoStop, -Stop);
// h->dJointSetHingeParam(j, dParamStopCFM, CFM);
// h->dJointSetHingeParam(j, dParamStopERP, ERP);
// h->setMotorTarget(vel);
}
break;*/
case JOINTTYPE_SLIDER:
{
btTransform jointtransform = transformFromQuake(world, ed);
btTransform b1transform = transformFromQuake(world, e1).inverseTimes(jointtransform);
btTransform b2transform = transformFromQuake(world, e2).inverseTimes(jointtransform);
btSliderConstraint *s = new btSliderConstraint(*b1, *b2, b1transform, b2transform, false);
j = s;
if (s)
{
// s->dJointSetSliderAxis(j, forward[0], forward[1], forward[2]);
// s->dJointSetSliderParam(j, dParamFMax, FMax);
s->setLowerLinLimit(-Stop);
s->setUpperLinLimit(Stop);
s->setLowerAngLimit(0);
s->setUpperAngLimit(0);
// s->dJointSetSliderParam(j, dParamHiStop, Stop);
// s->dJointSetSliderParam(j, dParamLoStop, -Stop);
// s->dJointSetSliderParam(j, dParamStopCFM, CFM);
// s->dJointSetSliderParam(j, dParamStopERP, ERP);
// s->setTargetLinMotorVelocity(vel);
// s->setPoweredLinMotor(true);
}
}
break;
/* case JOINTTYPE_UNIVERSAL:
btGeneric6DofConstraint
j = dJointCreateUniversal(rbe->ode_world, 0);
if (j)
{
dJointSetUniversalAnchor(j, origin[0], origin[1], origin[2]);
dJointSetUniversalAxis1(j, forward[0], forward[1], forward[2]);
dJointSetUniversalAxis2(j, up[0], up[1], up[2]);
dJointSetUniversalParam(j, dParamFMax, FMax);
dJointSetUniversalParam(j, dParamHiStop, Stop);
dJointSetUniversalParam(j, dParamLoStop, -Stop);
dJointSetUniversalParam(j, dParamStopCFM, CFM);
dJointSetUniversalParam(j, dParamStopERP, ERP);
dJointSetUniversalParam(j, dParamVel, Vel);
dJointSetUniversalParam(j, dParamFMax2, FMax);
dJointSetUniversalParam(j, dParamHiStop2, Stop);
dJointSetUniversalParam(j, dParamLoStop2, -Stop);
dJointSetUniversalParam(j, dParamStopCFM2, CFM);
dJointSetUniversalParam(j, dParamStopERP2, ERP);
dJointSetUniversalParam(j, dParamVel2, Vel);
}
break;*/
/* case JOINTTYPE_HINGE2:
j = dJointCreateHinge2(rbe->ode_world, 0);
if (j)
{
dJointSetHinge2Anchor(j, origin[0], origin[1], origin[2]);
dJointSetHinge2Axis1(j, forward[0], forward[1], forward[2]);
dJointSetHinge2Axis2(j, velocity[0], velocity[1], velocity[2]);
dJointSetHinge2Param(j, dParamFMax, FMax);
dJointSetHinge2Param(j, dParamHiStop, Stop);
dJointSetHinge2Param(j, dParamLoStop, -Stop);
dJointSetHinge2Param(j, dParamStopCFM, CFM);
dJointSetHinge2Param(j, dParamStopERP, ERP);
dJointSetHinge2Param(j, dParamVel, Vel);
dJointSetHinge2Param(j, dParamFMax2, FMax);
dJointSetHinge2Param(j, dParamHiStop2, Stop);
dJointSetHinge2Param(j, dParamLoStop2, -Stop);
dJointSetHinge2Param(j, dParamStopCFM2, CFM);
dJointSetHinge2Param(j, dParamStopERP2, ERP);
dJointSetHinge2Param(j, dParamVel2, Vel);
}
break;*/
case JOINTTYPE_FIXED:
{
btTransform jointtransform = transformFromQuake(world, ed);
btTransform b1transform = transformFromQuake(world, e1).inverseTimes(jointtransform);
btTransform b2transform = transformFromQuake(world, e2).inverseTimes(jointtransform);
j = new btFixedConstraint(*b1, *b2, b1transform, b2transform);
}
break;
case 0:
default:
j = nullptr;
break;
}
ed->rbe.joint.joint = (void *) j;
if (j)
{
j->setUserConstraintPtr((void *) ed);
rbe->dworld->addConstraint(j, false);
}
}
static void MatToTransform(const float *mat, btTransform &tr)
{
tr.setBasis(btMatrix3x3(
mat[0], mat[1], mat[2],
mat[4], mat[5], mat[6],
mat[8], mat[9], mat[10]));
tr.setOrigin(btVector3(mat[3], mat[7], mat[11]));
}
static void MatFromTransform(float *mat, const btTransform &tr)
{
const btMatrix3x3 &m = tr.getBasis();
const btVector3 &o = tr.getOrigin();
const btVector3 &r0 = m.getRow(0);
const btVector3 &r1 = m.getRow(1);
const btVector3 &r2 = m.getRow(2);
mat[0] = r0[0];
mat[1] = r0[1];
mat[2] = r0[2];
mat[3] =o[0];
mat[4] = r1[0];
mat[5] = r1[1];
mat[6] = r1[2];
mat[7] =o[1];
mat[8] = r2[0];
mat[9] = r2[1];
mat[10]= r2[2];
mat[11]=o[2];
}
static qboolean QDECL World_Bullet_RagMatrixToBody(rbebody_t *bodyptr, float *mat)
{ //mat is a 4*3 matrix
btTransform tr;
auto body = reinterpret_cast<btRigidBody*>(bodyptr->body);
MatToTransform(mat, tr);
body->setWorldTransform(tr);
return qtrue;
}
static qboolean QDECL World_Bullet_RagCreateBody(world_t *world, rbebody_t *bodyptr, rbebodyinfo_t *bodyinfo, float *mat, wedict_t *ent)
{
btRigidBody *body = nullptr;
btCollisionShape *geom = nullptr;
float radius;
float threshold;
// float length;
auto ctx = reinterpret_cast<bulletcontext_t*>(world->rbe);
// int axisindex;
ctx->hasextraobjs = true;
switch(bodyinfo->geomshape)
{
/*
case GEOMTYPE_TRIMESH:
// foo Matrix4x4_Identity(ed->rbe.offsetmatrix);
geom = NULL;
if (!model)
{
Con_Printf("entity %i (classname %s) has no model\n", NUM_FOR_EDICT(world->progs, (edict_t*)ed), PR_GetString(world->progs, ed->v->classname));
if (ed->rbe.physics)
World_Bullet_RemoveFromEntity(world, ed);
return;
}
if (!rbefuncs->GenerateCollisionMesh(world, model, ed, geomcenter))
{
if (ed->rbe.physics)
World_Bullet_RemoveFromEntity(world, ed);
return;
}
// foo Matrix4x4_RM_CreateTranslate(ed->rbe.offsetmatrix, geomcenter[0], geomcenter[1], geomcenter[2]);
{
btTriangleIndexVertexArray *tiva = new btTriangleIndexVertexArray();
btIndexedMesh mesh;
mesh.m_vertexType = PHY_FLOAT;
mesh.m_indexType = PHY_INTEGER;
mesh.m_numTriangles = ed->rbe.numtriangles;
mesh.m_numVertices = ed->rbe.numvertices;
mesh.m_triangleIndexBase = (const unsigned char*)ed->rbe.element3i;
mesh.m_triangleIndexStride = sizeof(*ed->rbe.element3i)*3;
mesh.m_vertexBase = (const unsigned char*)ed->rbe.vertex3f;
mesh.m_vertexStride = sizeof(*ed->rbe.vertex3f)*3;
tiva->addIndexedMesh(mesh);
geom = new btBvhTriangleMeshShape(tiva, true);
}
break;
*/
default:
Con_DPrintf("World_Bullet_RagCreateBody: unsupported geomshape %i\n", bodyinfo->geomshape);
case GEOMTYPE_BOX:
geom = new btBoxShape(btVector3(bodyinfo->dimensions[0], bodyinfo->dimensions[1], bodyinfo->dimensions[2]) * 0.5);
radius = sqrt(DotProduct(bodyinfo->dimensions,bodyinfo->dimensions));
threshold = min(bodyinfo->dimensions[0], min(bodyinfo->dimensions[1], bodyinfo->dimensions[2]));
break;
case GEOMTYPE_SPHERE:
threshold = radius = bodyinfo->dimensions[0] * 0.5f;
geom = new btSphereShape(radius);
break;
case GEOMTYPE_CAPSULE:
// case GEOMTYPE_CAPSULE_X:
// case GEOMTYPE_CAPSULE_Y:
case GEOMTYPE_CAPSULE_Z:
radius = (bodyinfo->dimensions[0]+bodyinfo->dimensions[1]) * 0.5f;
geom = new btCapsuleShapeZ(radius, bodyinfo->dimensions[2]);
threshold = min(radius, bodyinfo->dimensions[2]*0.5);
radius = max(radius, bodyinfo->dimensions[2]*0.5);
break;
case GEOMTYPE_CYLINDER:
// case GEOMTYPE_CYLINDER_X:
// case GEOMTYPE_CYLINDER_Y:
case GEOMTYPE_CYLINDER_Z:
radius = (bodyinfo->dimensions[0] + bodyinfo->dimensions[1]) * 0.5;
geom = new btCylinderShapeZ(btVector3(radius, radius, bodyinfo->dimensions[2])*0.5);
threshold = min(radius, bodyinfo->dimensions[2]*0.5);
radius = max(radius, bodyinfo->dimensions[2]*0.5);
break;
}
bodyptr->geom = geom;
//now create the body too
btVector3 fallInertia(0, 0, 0);
geom->calculateLocalInertia(bodyinfo->mass, fallInertia);
btRigidBody::btRigidBodyConstructionInfo fallRigidBodyCI(bodyinfo->mass, nullptr, geom, fallInertia);
MatToTransform(mat, fallRigidBodyCI.m_startWorldTransform);
body = new btRigidBody(fallRigidBodyCI);
body->setUserPointer(ent);
bodyptr->body = reinterpret_cast<void*>(body);
//motion threshhold should be speed/physicsframerate.
//FIXME: recalculate...
body->setCcdMotionThreshold(threshold/64);
//radius should be the body's radius
body->setCcdSweptSphereRadius(radius);
ctx->dworld->addRigidBody(body, ent?ent->xv->dimension_solid:~0, ent?ent->xv->dimension_hit:~0);
return qtrue;
}
static void QDECL World_Bullet_RagMatrixFromJoint(rbejoint_t *joint, rbejointinfo_t *info, float *mat)
{
/*
dVector3 dr3;
switch(info->type)
{
case JOINTTYPE_POINT:
dJointGetBallAnchor(joint->ode_joint, dr3);
mat[3] = dr3[0];
mat[7] = dr3[1];
mat[11] = dr3[2];
VectorClear(mat+4);
VectorClear(mat+8);
break;
case JOINTTYPE_HINGE:
dJointGetHingeAnchor(joint->ode_joint, dr3);
mat[3] = dr3[0];
mat[7] = dr3[1];
mat[11] = dr3[2];
dJointGetHingeAxis(joint->ode_joint, dr3);
VectorCopy(dr3, mat+4);
VectorClear(mat+8);
CrossProduct(mat+4, mat+8, mat+0);
return;
break;
case JOINTTYPE_HINGE2:
dJointGetHinge2Anchor(joint->ode_joint, dr3);
mat[3] = dr3[0];
mat[7] = dr3[1];
mat[11] = dr3[2];
dJointGetHinge2Axis1(joint->ode_joint, dr3);
VectorCopy(dr3, mat+4);
dJointGetHinge2Axis2(joint->ode_joint, dr3);
VectorCopy(dr3, mat+8);
break;
case JOINTTYPE_SLIDER:
//no anchor point...
//get the two bodies and average their origin for a somewhat usable representation of an anchor.
{
const dReal *p1, *p2;
dReal n[3];
dBodyID b1 = dJointGetBody(joint->ode_joint, 0), b2 = dJointGetBody(joint->ode_joint, 1);
if (b1)
p1 = dBodyGetPosition(b1);
else
{
p1 = n;
VectorClear(n);
}
if (b2)
p2 = dBodyGetPosition(b2);
else
p2 = p1;
dJointGetSliderAxis(joint->ode_joint, dr3 + 0);
VectorInterpolate(p1, 0.5, p2, dr3);
mat[3] = dr3[0];
mat[7] = dr3[1];
mat[11] = dr3[2];
VectorClear(mat+4);
VectorClear(mat+8);
}
break;
case JOINTTYPE_UNIVERSAL:
dJointGetUniversalAnchor(joint->ode_joint, dr3);
mat[3] = dr3[0];
mat[7] = dr3[1];
mat[11] = dr3[2];
dJointGetUniversalAxis1(joint->ode_joint, dr3);
VectorCopy(dr3, mat+4);
dJointGetUniversalAxis2(joint->ode_joint, dr3);
VectorCopy(dr3, mat+8);
CrossProduct(mat+4, mat+8, mat+0);
return;
break;
}
rbefuncs->AngleVectors(vec3_origin, mat+0, mat+4, mat+8);
VectorNegate((mat+4), (mat+4));
*/
}
static void QDECL World_Bullet_RagMatrixFromBody(world_t *world, rbebody_t *bodyptr, float *mat)
{
//auto ctx = reinterpret_cast<bulletcontext_t*>(world->rbe);
auto body = reinterpret_cast<btRigidBody*>(bodyptr->body);
MatFromTransform(mat, body->getCenterOfMassTransform());
}
static void QDECL World_Bullet_RagEnableJoint(rbejoint_t *joint, qboolean enabled)
{
auto j = reinterpret_cast<btTypedConstraint*>(joint->joint);
j->setEnabled(enabled);
}
static void QDECL World_Bullet_RagCreateJoint(world_t *world, rbejoint_t *joint, rbejointinfo_t *info, rbebody_t *body1, rbebody_t *body2, vec3_t aaa2[3])
{
auto ctx = reinterpret_cast<bulletcontext_t*>(world->rbe);
btTypedConstraint *j;
btVector3 org(aaa2[0][0], aaa2[0][1], aaa2[0][2]);
btVector3 axis1(aaa2[1][0], aaa2[1][1], aaa2[1][2]);
btVector3 axis2(aaa2[2][0], aaa2[2][1], aaa2[2][2]);
auto rb1 = reinterpret_cast<btRigidBody*>(body1->body);
auto rb2 = reinterpret_cast<btRigidBody*>(body2->body);
switch(info->type)
{
case JOINTTYPE_POINT:
{
auto point = new btPoint2PointConstraint(*rb1, *rb2, rb1->getWorldTransform().getOrigin()-org, rb2->getWorldTransform().getOrigin()-org);
// point->setParam(BT_P2P_FLAGS_ERP, info->ERP);
// point->setParam(BT_P2P_FLAGS_CFM, info->CFM);
j = point;
}
break;
case JOINTTYPE_HINGE:
{
auto hinge = new btHingeConstraint(*rb1, *rb2, org, org, axis1, axis2);
hinge->setLimit(info->LoStop, info->HiStop /*other stuff!*/);
// hinge->setParam(BT_HINGE_FLAGS_CFM_NORM, info->CFM);
// hinge->setParam(BT_HINGE_FLAGS_CFM_STOP, info->CFM2);
// hinge->setParam(BT_HINGE_FLAGS_ERP_NORM, info->ERP);
// hinge->setParam(BT_HINGE_FLAGS_ERP_STOP, info->ERP2);
j = hinge;
}
break;
// case JOINTTYPE_SLIDER:
// j = btSliderConstraint(rb1, rb2, tr1, tr2, false);
// break;
case JOINTTYPE_UNIVERSAL:
{
auto uni = new btUniversalConstraint(*rb1, *rb2, org, axis1, axis2);
// uni->setParam(BT_6DOF_FLAGS_CFM_NORM, info->CFM);
// uni->setParam(BT_6DOF_FLAGS_CFM_STOP, info->CFM2);
// uni->setParam(BT_6DOF_FLAGS_ERP_STOP, info->ERP);
uni->setUpperLimit(info->HiStop, info->HiStop2);
uni->setLowerLimit(info->LoStop, info->LoStop2);
j = uni;
}
break;
case JOINTTYPE_HINGE2:
{
auto hinge2 = new btHinge2Constraint(*rb1, *rb2, org, axis1, axis2);
hinge2->setUpperLimit(info->HiStop);
hinge2->setLowerLimit(info->LoStop);
j = hinge2;
}
break;
// case JOINTTYPE_FIXED:
// j = btFixedConstraint(rb1, rb2, tr1, tr2);
// break;
default:
Con_Printf("Bullet: joint type %i not supported\n", info->type);
j = nullptr;
break;
}
/* if (joint->ode_joint)
{
//Con_Printf("made new joint %i\n", (int) (ed - prog->edicts));
// dJointSetData(joint->ode_joint, NULL);
dJointAttach(joint->ode_joint, body1?body1->ode_body:NULL, body2?body2->ode_body:NULL);
switch(info->type)
{
case JOINTTYPE_POINT:
dJointSetBallAnchor(joint->ode_joint, aaa2[0][0], aaa2[0][1], aaa2[0][2]);
break;
case JOINTTYPE_HINGE:
dJointSetHingeAnchor(joint->ode_joint, aaa2[0][0], aaa2[0][1], aaa2[0][2]);
dJointSetHingeAxis(joint->ode_joint, aaa2[1][0], aaa2[1][1], aaa2[1][2]);
dJointSetHingeParam(joint->ode_joint, dParamFMax, info->FMax);
dJointSetHingeParam(joint->ode_joint, dParamHiStop, info->HiStop);
dJointSetHingeParam(joint->ode_joint, dParamLoStop, info->LoStop);
dJointSetHingeParam(joint->ode_joint, dParamStopCFM, info->CFM);
dJointSetHingeParam(joint->ode_joint, dParamStopERP, info->ERP);
dJointSetHingeParam(joint->ode_joint, dParamVel, info->Vel);
break;
case JOINTTYPE_SLIDER:
dJointSetSliderAxis(joint->ode_joint, aaa2[1][0], aaa2[1][1], aaa2[1][2]);
dJointSetSliderParam(joint->ode_joint, dParamFMax, info->FMax);
dJointSetSliderParam(joint->ode_joint, dParamHiStop, info->HiStop);
dJointSetSliderParam(joint->ode_joint, dParamLoStop, info->LoStop);
dJointSetSliderParam(joint->ode_joint, dParamStopCFM, info->CFM);
dJointSetSliderParam(joint->ode_joint, dParamStopERP, info->ERP);
dJointSetSliderParam(joint->ode_joint, dParamVel, info->Vel);
break;
case JOINTTYPE_UNIVERSAL:
dJointSetUniversalAnchor(joint->ode_joint, aaa2[0][0], aaa2[0][1], aaa2[0][2]);
dJointSetUniversalAxis1(joint->ode_joint, aaa2[1][0], aaa2[1][1], aaa2[1][2]);
dJointSetUniversalAxis2(joint->ode_joint, aaa2[2][0], aaa2[2][1], aaa2[2][2]);
dJointSetUniversalParam(joint->ode_joint, dParamFMax, info->FMax);
dJointSetUniversalParam(joint->ode_joint, dParamHiStop, info->HiStop);
dJointSetUniversalParam(joint->ode_joint, dParamLoStop, info->LoStop);
dJointSetUniversalParam(joint->ode_joint, dParamStopCFM, info->CFM);
dJointSetUniversalParam(joint->ode_joint, dParamStopERP, info->ERP);
dJointSetUniversalParam(joint->ode_joint, dParamVel, info->Vel);
dJointSetUniversalParam(joint->ode_joint, dParamFMax2, info->FMax2);
dJointSetUniversalParam(joint->ode_joint, dParamHiStop2, info->HiStop2);
dJointSetUniversalParam(joint->ode_joint, dParamLoStop2, info->LoStop2);
dJointSetUniversalParam(joint->ode_joint, dParamStopCFM2, info->CFM2);
dJointSetUniversalParam(joint->ode_joint, dParamStopERP2, info->ERP2);
dJointSetUniversalParam(joint->ode_joint, dParamVel2, info->Vel2);
break;
case JOINTTYPE_HINGE2:
dJointSetHinge2Anchor(joint->ode_joint, aaa2[0][0], aaa2[0][1], aaa2[0][2]);
dJointSetHinge2Axis1(joint->ode_joint, aaa2[1][0], aaa2[1][1], aaa2[1][2]);
dJointSetHinge2Axis2(joint->ode_joint, aaa2[2][0], aaa2[2][1], aaa2[2][2]);
dJointSetHinge2Param(joint->ode_joint, dParamFMax, info->FMax);
dJointSetHinge2Param(joint->ode_joint, dParamHiStop, info->HiStop);
dJointSetHinge2Param(joint->ode_joint, dParamLoStop, info->LoStop);
dJointSetHinge2Param(joint->ode_joint, dParamStopCFM, info->CFM);
dJointSetHinge2Param(joint->ode_joint, dParamStopERP, info->ERP);
dJointSetHinge2Param(joint->ode_joint, dParamVel, info->Vel);
dJointSetHinge2Param(joint->ode_joint, dParamFMax2, info->FMax2);
dJointSetHinge2Param(joint->ode_joint, dParamHiStop2, info->HiStop2);
dJointSetHinge2Param(joint->ode_joint, dParamLoStop2, info->LoStop2);
dJointSetHinge2Param(joint->ode_joint, dParamStopCFM2, info->CFM2);
dJointSetHinge2Param(joint->ode_joint, dParamStopERP2, info->ERP2);
dJointSetHinge2Param(joint->ode_joint, dParamVel2, info->Vel2);
break;
case JOINTTYPE_FIXED:
dJointSetFixed(joint->ode_joint);
break;
}
}
*/
if (j)
ctx->dworld->addConstraint(j, true);
joint->joint = reinterpret_cast<void*>(j);
}
static void QDECL World_Bullet_RagDestroyBody(world_t *world, rbebody_t *bodyptr)
{
auto ctx = reinterpret_cast<bulletcontext_t*>(world->rbe);
auto body = reinterpret_cast<btRigidBody*>(bodyptr->body);
auto geom = reinterpret_cast<btCollisionShape*>(bodyptr->geom);
bodyptr->body = nullptr;
bodyptr->geom = nullptr;
if (body)
{
ctx->dworld->removeRigidBody(body);
delete body;
}
if (geom)
delete geom;
}
static void QDECL World_Bullet_RagDestroyJoint(world_t *world, rbejoint_t *joint)
{
auto ctx = reinterpret_cast<bulletcontext_t*>(world->rbe);
auto j = reinterpret_cast<btTypedConstraint*>(joint->joint);
if (j)
{
ctx->dworld->removeConstraint(j);
delete j;
}
joint->joint = nullptr;
}
//bullet gives us a handy way to get/set motion states. we can cheesily update entity fields this way.
class QCMotionState : public btMotionState
{
wedict_t *edict;
qboolean dirty;
btTransform trans;
world_t *world;
public:
void ReloadMotionState(void)
{
vec3_t offset;
vec3_t axis[3];
btVector3 org;
rbefuncs->AngleVectors(edict->v->angles, axis[0], axis[1], axis[2]);
VectorNegate(axis[1], axis[1]);
VectorAvg(edict->rbe.mins, edict->rbe.maxs, offset);
VectorMA(edict->v->origin, offset[0]*1, axis[0], org);
org[3] = 0;//for sse.
VectorMA(org, offset[1]*1, axis[1], org);
VectorMA(org, offset[2]*1, axis[2], org);
trans.setBasis(btMatrix3x3(axis[0][0], axis[1][0], axis[2][0],
axis[0][1], axis[1][1], axis[2][1],
axis[0][2], axis[1][2], axis[2][2]));
trans.setOrigin(org);
}
QCMotionState(wedict_t *ed, world_t *w)
{
dirty = qtrue;
edict = ed;
world = w;
ReloadMotionState();
}
virtual ~QCMotionState()
{
}
virtual void getWorldTransform(btTransform &worldTrans) const
{
worldTrans = trans;
}
virtual void setWorldTransform(const btTransform &worldTrans)
{
vec3_t fwd, left, up, offset;
trans = worldTrans;
btVector3 pos = worldTrans.getOrigin();
VectorCopy(worldTrans.getBasis().getColumn(0), fwd);
VectorCopy(worldTrans.getBasis().getColumn(1), left);
VectorCopy(worldTrans.getBasis().getColumn(2), up);
VectorAvg(edict->rbe.mins, edict->rbe.maxs, offset);
VectorMA(pos, offset[0]*-1, fwd, pos);
VectorMA(pos, offset[1]*-1, left, pos);
VectorMA(pos, offset[2]*-1, up, edict->v->origin);
rbefuncs->VectorAngles(fwd, up, edict->v->angles, (qboolean)NegativeMeshPitch(world, edict));
const btVector3 &vel = ((btRigidBody*)edict->rbe.body.body)->getLinearVelocity();
VectorCopy(vel.m_floats, edict->v->velocity);
//so it doesn't get rebuilt
VectorCopy(edict->v->origin, edict->rbe.origin);
VectorCopy(edict->v->angles, edict->rbe.angles);
VectorCopy(edict->v->velocity, edict->rbe.velocity);
//FIXME: relink the ent into the areagrid
}
};
static void World_Bullet_Frame_BodyFromEntity(world_t *world, wedict_t *ed)
{
auto ctx = reinterpret_cast<bulletcontext_t*>(world->rbe);
btRigidBody *body = nullptr;
// btScalar mass;
float test;
// void *dataID;
model_t *model;
int axisindex;
int modelindex = 0;
int movetype = MOVETYPE_NONE;
int solid = SOLID_NOT;
int geomtype = GEOMTYPE_SOLID;
qboolean modified = qfalse;
vec3_t angles;
vec3_t avelocity;
vec3_t entmaxs;
vec3_t entmins;
vec3_t forward;
vec3_t geomcenter;
vec3_t geomsize;
vec3_t left;
vec3_t origin;
vec3_t spinvelocity;
vec3_t up;
vec3_t velocity;
// vec_t f;
vec_t length;
vec_t massval = 1.0f;
// vec_t movelimit;
vec_t radius;
vec_t scale;
// vec_t spinlimit;
qboolean gravity;
geomtype = ed->xv->geomtype;
solid = ed->v->solid;
movetype = ed->v->movetype;
scale = ed->xv->scale?ed->xv->scale:1;
modelindex = 0;
model = nullptr;
if (!geomtype)
{
switch(solid)
{
case SOLID_NOT: geomtype = GEOMTYPE_NONE; break;
case SOLID_TRIGGER: geomtype = GEOMTYPE_NONE; break;
case SOLID_BSP: geomtype = GEOMTYPE_TRIMESH; break;
case SOLID_PHYSICS_TRIMESH: geomtype = GEOMTYPE_TRIMESH; break;
case SOLID_PHYSICS_BOX: geomtype = GEOMTYPE_BOX; break;
case SOLID_PHYSICS_SPHERE: geomtype = GEOMTYPE_SPHERE; break;
case SOLID_PHYSICS_CAPSULE: geomtype = GEOMTYPE_CAPSULE; break;
case SOLID_PHYSICS_CYLINDER:geomtype = GEOMTYPE_CYLINDER; break;
default: geomtype = GEOMTYPE_BOX; break;
}
}
switch(geomtype)
{
case GEOMTYPE_TRIMESH:
modelindex = ed->v->modelindex;
model = world->Get_CModel(world, modelindex);
if (!model || model->loadstate != MLS_LOADED)
{
model = nullptr;
modelindex = 0;
}
if (model)
{
VectorScale(model->mins, scale, entmins);
VectorScale(model->maxs, scale, entmaxs);
if (ed->xv->mass)
massval = ed->xv->mass;
}
else
{
modelindex = 0;
massval = 1.0f;
}
massval = 0; //bullet does not support trisoup moving through the world.
break;
case GEOMTYPE_BOX:
case GEOMTYPE_SPHERE:
case GEOMTYPE_CAPSULE:
case GEOMTYPE_CAPSULE_X:
case GEOMTYPE_CAPSULE_Y:
case GEOMTYPE_CAPSULE_Z:
case GEOMTYPE_CYLINDER:
case GEOMTYPE_CYLINDER_X:
case GEOMTYPE_CYLINDER_Y:
case GEOMTYPE_CYLINDER_Z:
VectorCopy(ed->v->mins, entmins);
VectorCopy(ed->v->maxs, entmaxs);
if (ed->xv->mass)
massval = ed->xv->mass;
break;
default:
// case GEOMTYPE_NONE:
if (ed->rbe.physics)
World_Bullet_RemoveFromEntity(world, ed);
return;
}
VectorSubtract(entmaxs, entmins, geomsize);
if (DotProduct(geomsize,geomsize) == 0)
{
// we don't allow point-size physics objects...
if (ed->rbe.physics)
World_Bullet_RemoveFromEntity(world, ed);
return;
}
// check if we need to create or replace the geom
if (!ed->rbe.physics
|| !VectorCompare(ed->rbe.mins, entmins)
|| !VectorCompare(ed->rbe.maxs, entmaxs)
|| ed->rbe.modelindex != modelindex)
{
btCollisionShape *geom;
modified = qtrue;
World_Bullet_RemoveFromEntity(world, ed);
ed->rbe.physics = qtrue;
VectorCopy(entmins, ed->rbe.mins);
VectorCopy(entmaxs, ed->rbe.maxs);
ed->rbe.modelindex = modelindex;
VectorAvg(entmins, entmaxs, geomcenter);
ed->rbe.movelimit = min(geomsize[0], min(geomsize[1], geomsize[2]));
/* memset(ed->rbe.offsetmatrix, 0, sizeof(ed->rbe.offsetmatrix));
ed->rbe.offsetmatrix[0] = 1;
ed->rbe.offsetmatrix[5] = 1;
ed->rbe.offsetmatrix[10] = 1;
ed->rbe.offsetmatrix[3] = -geomcenter[0];
ed->rbe.offsetmatrix[7] = -geomcenter[1];
ed->rbe.offsetmatrix[11] = -geomcenter[2];
*/
ed->rbe.mass = massval;
switch(geomtype)
{
case GEOMTYPE_TRIMESH:
// foo Matrix4x4_Identity(ed->rbe.offsetmatrix);
geom = nullptr;
if (!model)
{
Con_Printf("entity %i (classname %s) has no model\n", NUM_FOR_EDICT(world->progs, (edict_t*)ed), PR_GetString(world->progs, ed->v->classname));
if (ed->rbe.physics)
World_Bullet_RemoveFromEntity(world, ed);
return;
}
if (!rbefuncs->GenerateCollisionMesh(world, model, ed, geomcenter))
{
if (ed->rbe.physics)
World_Bullet_RemoveFromEntity(world, ed);
return;
}
// foo Matrix4x4_RM_CreateTranslate(ed->rbe.offsetmatrix, geomcenter[0], geomcenter[1], geomcenter[2]);
{
btTriangleIndexVertexArray *tiva = new btTriangleIndexVertexArray();
btIndexedMesh mesh;
mesh.m_vertexType = PHY_FLOAT;
mesh.m_indexType = PHY_INTEGER;
mesh.m_numTriangles = ed->rbe.numtriangles;
mesh.m_numVertices = ed->rbe.numvertices;
mesh.m_triangleIndexBase = (const unsigned char*)ed->rbe.element3i;
mesh.m_triangleIndexStride = sizeof(*ed->rbe.element3i)*3;
mesh.m_vertexBase = (const unsigned char*)ed->rbe.vertex3f;
mesh.m_vertexStride = sizeof(*ed->rbe.vertex3f)*3;
tiva->addIndexedMesh(mesh);
geom = new btBvhTriangleMeshShape(tiva, true);
}
break;
case GEOMTYPE_BOX:
geom = new btBoxShape(btVector3(geomsize[0], geomsize[1], geomsize[2]) * 0.5);
break;
case GEOMTYPE_SPHERE:
geom = new btSphereShape(geomsize[0] * 0.5f);
break;
case GEOMTYPE_CAPSULE:
case GEOMTYPE_CAPSULE_X:
case GEOMTYPE_CAPSULE_Y:
case GEOMTYPE_CAPSULE_Z:
if (geomtype == GEOMTYPE_CAPSULE)
{
// the qc gives us 3 axis radius, the longest axis is the capsule axis
axisindex = 0;
if (geomsize[axisindex] < geomsize[1])
axisindex = 1;
if (geomsize[axisindex] < geomsize[2])
axisindex = 2;
}
else
axisindex = geomtype-GEOMTYPE_CAPSULE_X;
if (axisindex == 0)
radius = min(geomsize[1], geomsize[2]) * 0.5f;
else if (axisindex == 1)
radius = min(geomsize[0], geomsize[2]) * 0.5f;
else
radius = min(geomsize[0], geomsize[1]) * 0.5f;
length = geomsize[axisindex] - radius*2;
if (length <= 0)
{
radius -= (1 - length)*0.5;
length = 1;
}
if (axisindex == 0)
geom = new btCapsuleShapeX(radius, length);
else if (axisindex == 1)
geom = new btCapsuleShape(radius, length);
else
geom = new btCapsuleShapeZ(radius, length);
break;
case GEOMTYPE_CYLINDER:
case GEOMTYPE_CYLINDER_X:
case GEOMTYPE_CYLINDER_Y:
case GEOMTYPE_CYLINDER_Z:
if (geomtype == GEOMTYPE_CYLINDER)
{
// the qc gives us 3 axis radius, the longest axis is the capsule axis
axisindex = 0;
if (geomsize[axisindex] < geomsize[1])
axisindex = 1;
if (geomsize[axisindex] < geomsize[2])
axisindex = 2;
}
else
axisindex = geomtype-GEOMTYPE_CYLINDER_X;
if (axisindex == 0)
geom = new btCylinderShapeX(btVector3(geomsize[0], geomsize[1], geomsize[2])*0.5);
else if (axisindex == 1)
geom = new btCylinderShape(btVector3(geomsize[0], geomsize[1], geomsize[2])*0.5);
else
geom = new btCylinderShapeZ(btVector3(geomsize[0], geomsize[1], geomsize[2])*0.5);
break;
default:
// Con_Printf("World_Bullet_BodyFromEntity: unrecognized solid value %i was accepted by filter\n", solid);
if (ed->rbe.physics)
World_Bullet_RemoveFromEntity(world, ed);
return;
}
// Matrix3x4_InvertTo4x4_Simple(ed->rbe.offsetmatrix, ed->rbe.offsetimatrix);
// ed->rbe.massbuf = BZ_Malloc(sizeof(dMass));
// memcpy(ed->rbe.massbuf, &mass, sizeof(dMass));
ed->rbe.body.geom = (void *)geom;
}
//non-moving objects need to be static objects (and thus need 0 mass)
if (movetype != MOVETYPE_PHYSICS && movetype != MOVETYPE_WALK) //enabling kinematic objects for everything else destroys framerates (!movetype || movetype == MOVETYPE_PUSH)
massval = 0;
//if the mass changes, we'll need to create a new body (but not the shape, so invalidate the current one)
if (ed->rbe.mass != massval)
{
ed->rbe.mass = massval;
body = (btRigidBody*)ed->rbe.body.body;
if (body)
ctx->dworld->removeRigidBody(body);
ed->rbe.body.body = NULL;
}
// if(ed->rbe.body.geom)
// dGeomSetData(ed->rbe.body.geom, (void*)ed);
if (movetype == MOVETYPE_PHYSICS && ed->rbe.mass)
{
if (ed->rbe.body.body == NULL)
{
// ed->rbe.body.body = (void *)(body = dBodyCreate(world->rbe.world));
// dGeomSetBody(ed->rbe.body.geom, body);
// dBodySetData(body, (void*)ed);
// dBodySetMass(body, (dMass *) ed->rbe.massbuf);
btVector3 fallInertia(0, 0, 0);
((btCollisionShape*)ed->rbe.body.geom)->calculateLocalInertia(ed->rbe.mass, fallInertia);
btRigidBody::btRigidBodyConstructionInfo fallRigidBodyCI(ed->rbe.mass, new QCMotionState(ed,world), (btCollisionShape*)ed->rbe.body.geom, fallInertia);
body = new btRigidBody(fallRigidBodyCI);
body->setUserPointer(ed);
// btTransform trans;
// trans.setFromOpenGLMatrix(ed->rbe.offsetmatrix);
// body->setCenterOfMassTransform(trans);
ed->rbe.body.body = (void*)body;
//motion threshhold should be speed/physicsframerate.
//Threshhold enables CCD when the object moves faster than X
//FIXME: recalculate...
body->setCcdMotionThreshold((geomsize[0]+geomsize[1]+geomsize[2])*(4/3));
//radius should be the body's radius, or smaller.
body->setCcdSweptSphereRadius((geomsize[0]+geomsize[1]+geomsize[2])*(0.5/3));
ctx->dworld->addRigidBody(body, ed->xv->dimension_solid, ed->xv->dimension_hit);
modified = qtrue;
}
}
else
{
if (ed->rbe.body.body == nullptr)
{
btRigidBody::btRigidBodyConstructionInfo rbci(ed->rbe.mass, new QCMotionState(ed,world), (btCollisionShape*)ed->rbe.body.geom, btVector3(0, 0, 0));
body = new btRigidBody(rbci);
body->setUserPointer(ed);
// btTransform trans;
// trans.setFromOpenGLMatrix(ed->rbe.offsetmatrix);
// body->setCenterOfMassTransform(trans);
ed->rbe.body.body = (void*)body;
if (ed->rbe.mass)
body->setCollisionFlags(body->getCollisionFlags() | btCollisionObject::CF_KINEMATIC_OBJECT);
else
body->setCollisionFlags(body->getCollisionFlags() | btCollisionObject::CF_STATIC_OBJECT);
ctx->dworld->addRigidBody(body, ed->xv->dimension_solid, ed->xv->dimension_hit);
modified = qtrue;
}
}
body = (btRigidBody*)ed->rbe.body.body;
// get current data from entity
gravity = qtrue;
VectorCopy(ed->v->origin, origin);
VectorCopy(ed->v->velocity, velocity);
VectorCopy(ed->v->angles, angles);
VectorCopy(ed->v->avelocity, avelocity);
if (ed == world->edicts || (ed->xv->gravity && ed->xv->gravity <= 0.01))
gravity = qfalse;
// compatibility for legacy entities
// if (!DotProduct(forward,forward) || solid == SOLID_BSP)
{
vec3_t qangles, qavelocity;
VectorCopy(angles, qangles);
VectorCopy(avelocity, qavelocity);
if (ed->v->modelindex)
{
model = world->Get_CModel(world, ed->v->modelindex);
if (!model || model->type == mod_alias)
{
qangles[PITCH] *= -1;
qavelocity[PITCH] *= -1;
}
}
rbefuncs->AngleVectors(qangles, forward, left, up);
VectorNegate(left,left);
// convert single-axis rotations in avelocity to spinvelocity
// FIXME: untested math - check signs
VectorSet(spinvelocity, DEG2RAD(qavelocity[PITCH]), DEG2RAD(qavelocity[ROLL]), DEG2RAD(qavelocity[YAW]));
}
// compatibility for legacy entities
switch (solid)
{
case SOLID_BBOX:
case SOLID_SLIDEBOX:
case SOLID_CORPSE:
VectorSet(forward, 1, 0, 0);
VectorSet(left, 0, 1, 0);
VectorSet(up, 0, 0, 1);
VectorSet(spinvelocity, 0, 0, 0);
break;
}
// we must prevent NANs...
test = DotProduct(origin,origin) + DotProduct(forward,forward) + DotProduct(left,left) + DotProduct(up,up) + DotProduct(velocity,velocity) + DotProduct(spinvelocity,spinvelocity);
if (IS_NAN(test))
{
modified = qtrue;
//Con_Printf("Fixing NAN values on entity %i : .classname = \"%s\" .origin = '%f %f %f' .velocity = '%f %f %f' .axis_forward = '%f %f %f' .axis_left = '%f %f %f' .axis_up = %f %f %f' .spinvelocity = '%f %f %f'\n", PRVM_NUM_FOR_EDICT(ed), PRVM_GetString(PRVM_EDICTFIELDVALUE(ed, prog->fieldoffsets.classname)->string), origin[0], origin[1], origin[2], velocity[0], velocity[1], velocity[2], forward[0], forward[1], forward[2], left[0], left[1], left[2], up[0], up[1], up[2], spinvelocity[0], spinvelocity[1], spinvelocity[2]);
Con_Printf("Fixing NAN values on entity %i : .classname = \"%s\" .origin = '%f %f %f' .velocity = '%f %f %f' .angles = '%f %f %f' .avelocity = '%f %f %f'\n", NUM_FOR_EDICT(world->progs, (edict_t*)ed), PR_GetString(world->progs, ed->v->classname), origin[0], origin[1], origin[2], velocity[0], velocity[1], velocity[2], angles[0], angles[1], angles[2], avelocity[0], avelocity[1], avelocity[2]);
test = DotProduct(origin,origin);
if (IS_NAN(test))
VectorClear(origin);
test = DotProduct(forward,forward) * DotProduct(left,left) * DotProduct(up,up);
if (IS_NAN(test))
{
VectorSet(angles, 0, 0, 0);
VectorSet(forward, 1, 0, 0);
VectorSet(left, 0, 1, 0);
VectorSet(up, 0, 0, 1);
}
test = DotProduct(velocity,velocity);
if (IS_NAN(test))
VectorClear(velocity);
test = DotProduct(spinvelocity,spinvelocity);
if (IS_NAN(test))
{
VectorClear(avelocity);
VectorClear(spinvelocity);
}
}
// check if the qc edited any position data
if (
0//!VectorCompare(origin, ed->rbe.origin)
|| !VectorCompare(velocity, ed->rbe.velocity)
//|| !VectorCompare(angles, ed->rbe.angles)
|| !VectorCompare(avelocity, ed->rbe.avelocity)
|| gravity != ed->rbe.gravity)
modified = qtrue;
// store the qc values into the physics engine
body = (btRigidBody*)ed->rbe.body.body;
if (modified && body)
{
// dVector3 r[3];
// float entitymatrix[16];
// float bodymatrix[16];
#if 0
Con_Printf("entity %i got changed by QC\n", (int) (ed - prog->edicts));
if(!VectorCompare(origin, ed->rbe.origin))
Con_Printf(" origin: %f %f %f -> %f %f %f\n", ed->rbe.origin[0], ed->rbe.origin[1], ed->rbe.origin[2], origin[0], origin[1], origin[2]);
if(!VectorCompare(velocity, ed->rbe.velocity))
Con_Printf(" velocity: %f %f %f -> %f %f %f\n", ed->rbe.velocity[0], ed->rbe.velocity[1], ed->rbe.velocity[2], velocity[0], velocity[1], velocity[2]);
if(!VectorCompare(angles, ed->rbe.angles))
Con_Printf(" angles: %f %f %f -> %f %f %f\n", ed->rbe.angles[0], ed->rbe.angles[1], ed->rbe.angles[2], angles[0], angles[1], angles[2]);
if(!VectorCompare(avelocity, ed->rbe.avelocity))
Con_Printf(" avelocity: %f %f %f -> %f %f %f\n", ed->rbe.avelocity[0], ed->rbe.avelocity[1], ed->rbe.avelocity[2], avelocity[0], avelocity[1], avelocity[2]);
if(gravity != ed->rbe.gravity)
Con_Printf(" gravity: %i -> %i\n", ed->ide.ode_gravity, gravity);
#endif
// values for BodyFromEntity to check if the qc modified anything later
VectorCopy(origin, ed->rbe.origin);
VectorCopy(velocity, ed->rbe.velocity);
VectorCopy(angles, ed->rbe.angles);
VectorCopy(avelocity, ed->rbe.avelocity);
ed->rbe.gravity = gravity;
// foo Matrix4x4_RM_FromVectors(entitymatrix, forward, left, up, origin);
// foo Matrix4_Multiply(ed->rbe.offsetmatrix, entitymatrix, bodymatrix);
// foo Matrix3x4_RM_ToVectors(bodymatrix, forward, left, up, origin);
// r[0][0] = forward[0];
// r[1][0] = forward[1];
// r[2][0] = forward[2];
// r[0][1] = left[0];
// r[1][1] = left[1];
// r[2][1] = left[2];
// r[0][2] = up[0];
// r[1][2] = up[1];
// r[2][2] = up[2];
auto ms = (QCMotionState*)body->getMotionState();
ms->ReloadMotionState();
body->setMotionState(ms);
body->setLinearVelocity(btVector3(velocity[0], velocity[1], velocity[2]));
body->setAngularVelocity(btVector3(spinvelocity[0], spinvelocity[1], spinvelocity[2]));
// body->setGravity(btVector3(ed->xv->gravitydir[0], ed->xv->gravitydir[1], ed->xv->gravitydir[2]) * ed->xv->gravity);
//something changed. make sure it still falls over appropriately
body->setActivationState(1);
}
/* FIXME: check if we actually need this insanity with bullet (ode sucks).
if(body)
{
// limit movement speed to prevent missed collisions at high speed
btVector3 ovelocity = body->getLinearVelocity();
btVector3 ospinvelocity = body->getAngularVelocity();
movelimit = ed->rbe.movelimit * world->rbe.movelimit;
test = DotProduct(ovelocity,ovelocity);
if (test > movelimit*movelimit)
{
// scale down linear velocity to the movelimit
// scale down angular velocity the same amount for consistency
f = movelimit / sqrt(test);
VectorScale(ovelocity, f, velocity);
VectorScale(ospinvelocity, f, spinvelocity);
body->setLinearVelocity(btVector3(velocity[0], velocity[1], velocity[2]));
body->setAngularVelocity(btVector3(spinvelocity[0], spinvelocity[1], spinvelocity[2]));
}
// make sure the angular velocity is not exploding
spinlimit = physics_bullet_spinlimit.value;
test = DotProduct(ospinvelocity,ospinvelocity);
if (test > spinlimit)
{
body->setAngularVelocity(btVector3(0, 0, 0));
}
}
*/
}
/*
#define MAX_CONTACTS 16
static void VARGS nearCallback (void *data, dGeomID o1, dGeomID o2)
{
world_t *world = (world_t *)data;
dContact contact[MAX_CONTACTS]; // max contacts per collision pair
dBodyID b1;
dBodyID b2;
dJointID c;
int i;
int numcontacts;
float bouncefactor1 = 0.0f;
float bouncestop1 = 60.0f / 800.0f;
float bouncefactor2 = 0.0f;
float bouncestop2 = 60.0f / 800.0f;
float erp;
dVector3 grav;
wedict_t *ed1, *ed2;
if (dGeomIsSpace(o1) || dGeomIsSpace(o2))
{
// colliding a space with something
dSpaceCollide2(o1, o2, data, &nearCallback);
// Note we do not want to test intersections within a space,
// only between spaces.
//if (dGeomIsSpace(o1)) dSpaceCollide(o1, data, &nearCallback);
//if (dGeomIsSpace(o2)) dSpaceCollide(o2, data, &nearCallback);
return;
}
b1 = dGeomGetBody(o1);
b2 = dGeomGetBody(o2);
// at least one object has to be using MOVETYPE_PHYSICS or we just don't care
if (!b1 && !b2)
return;
// exit without doing anything if the two bodies are connected by a joint
if (b1 && b2 && dAreConnectedExcluding(b1, b2, dJointTypeContact))
return;
ed1 = (wedict_t *) dGeomGetData(o1);
ed2 = (wedict_t *) dGeomGetData(o2);
if (ed1 == ed2 && ed1)
{
//ragdolls don't make contact with the bbox of the doll entity
//the origional entity should probably not be solid anyway.
//these bodies should probably not collide against bboxes of other entities with ragdolls either, but meh.
if (ed1->rbe.body.body == b1 || ed2->rbe.body == b2)
return;
}
if(!ed1 || ed1->isfree)
ed1 = world->edicts;
if(!ed2 || ed2->isfree)
ed2 = world->edicts;
// generate contact points between the two non-space geoms
numcontacts = dCollide(o1, o2, MAX_CONTACTS, &(contact[0].geom), sizeof(contact[0]));
if (numcontacts)
{
if(ed1 && ed1->v->touch)
{
world->Event_Touch(world, ed1, ed2);
}
if(ed2 && ed2->v->touch)
{
world->Event_Touch(world, ed2, ed1);
}
// if either ent killed itself, don't collide
if ((ed1&&ed1->isfree) || (ed2&&ed2->isfree))
return;
}
if(ed1)
{
if (ed1->xv->bouncefactor)
bouncefactor1 = ed1->xv->bouncefactor;
if (ed1->xv->bouncestop)
bouncestop1 = ed1->xv->bouncestop;
}
if(ed2)
{
if (ed2->xv->bouncefactor)
bouncefactor2 = ed2->xv->bouncefactor;
if (ed2->xv->bouncestop)
bouncestop2 = ed2->xv->bouncestop;
}
if ((ed2->entnum&&ed1->v->owner == ed2->entnum) || (ed1->entnum&&ed2->v->owner == ed1->entnum))
return;
// merge bounce factors and bounce stop
if(bouncefactor2 > 0)
{
if(bouncefactor1 > 0)
{
// TODO possibly better logic to merge bounce factor data?
if(bouncestop2 < bouncestop1)
bouncestop1 = bouncestop2;
if(bouncefactor2 > bouncefactor1)
bouncefactor1 = bouncefactor2;
}
else
{
bouncestop1 = bouncestop2;
bouncefactor1 = bouncefactor2;
}
}
dWorldGetGravity(world->rbe.world, grav);
bouncestop1 *= fabs(grav[2]);
erp = (DotProduct(ed1->v->velocity, ed1->v->velocity) > DotProduct(ed2->v->velocity, ed2->v->velocity)) ? ed1->xv->erp : ed2->xv->erp;
// add these contact points to the simulation
for (i = 0;i < numcontacts;i++)
{
contact[i].surface.mode = (physics_bullet_contact_mu.value != -1 ? dContactApprox1 : 0) |
(physics_bullet_contact_erp.value != -1 ? dContactSoftERP : 0) |
(physics_bullet_contact_cfm.value != -1 ? dContactSoftCFM : 0) |
(bouncefactor1 > 0 ? dContactBounce : 0);
contact[i].surface.mu = physics_bullet_contact_mu.value;
if (ed1->xv->friction)
contact[i].surface.mu *= ed1->xv->friction;
if (ed2->xv->friction)
contact[i].surface.mu *= ed2->xv->friction;
contact[i].surface.mu2 = 0;
contact[i].surface.soft_erp = physics_bullet_contact_erp.value + erp;
contact[i].surface.soft_cfm = physics_bullet_contact_cfm.value;
contact[i].surface.bounce = bouncefactor1;
contact[i].surface.bounce_vel = bouncestop1;
c = dJointCreateContact(world->rbe.world, world->rbe.contactgroup, contact + i);
dJointAttach(c, b1, b2);
}
}
*/
static void QDECL World_Bullet_Frame(world_t *world, double frametime, double gravity)
{
auto ctx = reinterpret_cast<bulletcontext_t*>(world->rbe);
if (world->rbe_hasphysicsents || ctx->hasextraobjs)
{
int iters;
unsigned int i;
wedict_t *ed;
// world->rbe.iterations = bound(1, physics_bullet_iterationsperframe.ival, 1000);
// world->rbe.step = frametime / world->rbe.iterations;
// world->rbe.movelimit = physics_bullet_movelimit.value / world->rbe.step;
// copy physics properties from entities to physics engine
for (i = 0;i < world->num_edicts;i++)
{
ed = WEDICT_NUM_PB(world->progs, i);
if (!ED_ISFREE(ed))
World_Bullet_Frame_BodyFromEntity(world, ed);
}
// oh, and it must be called after all bodies were created
for (i = 0;i < world->num_edicts;i++)
{
ed = WEDICT_NUM_PB(world->progs, i);
if (!ED_ISFREE(ed))
World_Bullet_Frame_JointFromEntity(world, ed);
}
while(ctx->cmdqueuehead)
{
auto cmd = ctx->cmdqueuehead;
ctx->cmdqueuehead = cmd->next;
if (!cmd->next)
ctx->cmdqueuetail = nullptr;
World_Bullet_RunCmd(world, cmd);
Z_Free(cmd);
}
ctx->dworld->setGravity(btVector3(0, 0, -gravity));
iters=physics_bullet_maxiterationsperframe->value;
if (iters < 0)
iters = 0;
ctx->dworld->stepSimulation(frametime, iters, 1/bound(1, physics_bullet_framerate->value, 500));
// set the tolerance for closeness of objects
// dWorldSetContactSurfaceLayer(world->rbe.world, max(0, physics_bullet_contactsurfacelayer.value));
// run collisions for the current world state, creating JointGroup
// dSpaceCollide(world->rbe.space, (void *)world, nearCallback);
// run physics (move objects, calculate new velocities)
// if (physics_bullet_worldquickstep.ival)
// {
// dWorldSetQuickStepNumIterations(world->rbe.world, bound(1, physics_bullet_worldquickstep_iterations.ival, 200));
// dWorldQuickStep(world->rbe.world, world->rbe.step);
// }
// else
// dWorldStep(world->rbe.world, world->rbe.step);
// clear the JointGroup now that we're done with it
// dJointGroupEmpty(world->rbe.contactgroup);
}
}
static void World_Bullet_RunCmd(world_t *world, rbecommandqueue_t *cmd)
{
auto body = (btRigidBody*)(cmd->edict->rbe.body.body);
switch(cmd->command)
{
case RBECMD_ENABLE:
if (body)
body->setActivationState(1);
break;
case RBECMD_DISABLE:
if (body)
body->setActivationState(0);
break;
case RBECMD_FORCE:
if (body)
{
btVector3 relativepos;
const btVector3 &center = body->getCenterOfMassPosition();
VectorSubtract(cmd->v2, center, relativepos);
body->setActivationState(1);
body->applyImpulse(btVector3(cmd->v1[0], cmd->v1[1], cmd->v1[2]), relativepos);
}
break;
case RBECMD_TORQUE:
if (cmd->edict->rbe.body.body)
{
body->setActivationState(1);
body->applyTorque(btVector3(cmd->v1[0], cmd->v1[1], cmd->v1[2]));
}
break;
}
}
static void QDECL World_Bullet_PushCommand(world_t *world, rbecommandqueue_t *val)
{
auto ctx = reinterpret_cast<bulletcontext_t*>(world->rbe);
auto cmd = (rbecommandqueue_t*)BZ_Malloc(sizeof(rbecommandqueue_t));
world->rbe_hasphysicsents = qtrue; //just in case.
memcpy(cmd, val, sizeof(*cmd));
cmd->next = nullptr;
//add on the end of the queue, so that order is preserved.
if (ctx->cmdqueuehead)
{
auto ot = ctx->cmdqueuetail;
ot->next = ctx->cmdqueuetail = cmd;
}
else
ctx->cmdqueuetail = ctx->cmdqueuehead = cmd;
}
static void QDECL World_Bullet_TraceEntity(world_t *world, wedict_t *ed, vec3_t start, vec3_t end, trace_t *trace)
{
auto ctx = reinterpret_cast<bulletcontext_t*>(world->rbe);
auto shape = (btCollisionShape*)ed->rbe.body.geom;
//btCollisionAlgorithm
class myConvexResultCallback : public btCollisionWorld::ConvexResultCallback
{
public:
void *m_impactent;
btVector3 m_impactpos;
btVector3 m_impactnorm;
virtual btScalar addSingleResult(btCollisionWorld::LocalConvexResult& convexResult,bool normalInWorldSpace)
{
if (m_closestHitFraction > convexResult.m_hitFraction)
{
m_closestHitFraction = convexResult.m_hitFraction;
m_impactpos = convexResult.m_hitPointLocal;
m_impactnorm = convexResult.m_hitNormalLocal;
m_impactent = convexResult.m_hitCollisionObject->getUserPointer();
}
return 0;
}
} result;
result.m_impactent = nullptr;
result.m_closestHitFraction = trace->fraction;
btTransform from(btMatrix3x3(1, 0, 0, 0, 1, 0, 0, 0, 1), btVector3(start[0], start[1], start[2]));
btTransform to(btMatrix3x3(1, 0, 0, 0, 1, 0, 0, 0, 1), btVector3(end[0], end[1], end[2]));
ctx->dworld->convexSweepTest((btConvexShape*)shape, from, to, result, 1);
if (result.m_impactent)
{
memset(trace, 0, sizeof(*trace));
trace->fraction = trace->truefraction = result.m_closestHitFraction;
VectorInterpolate(start, result.m_closestHitFraction, end, trace->endpos);
// VectorCopy(result.m_impactpos, trace->endpos);
VectorCopy(result.m_impactnorm, trace->plane.normal);
trace->ent = result.m_impactent;
trace->startsolid = qfalse; //FIXME: we don't really know
}
}
static void QDECL World_Bullet_Start(world_t *world)
{
bulletcontext_t *ctx;
if (world->rbe)
return; //no thanks, we already have one. somehow.
ctx = reinterpret_cast<bulletcontext_t*>(BZ_Malloc(sizeof(*ctx)));
memset(ctx, 0, sizeof(*ctx));
ctx->gworld = world;
ctx->funcs.End = World_Bullet_End;
ctx->funcs.RemoveJointFromEntity = World_Bullet_RemoveJointFromEntity;
ctx->funcs.RemoveFromEntity = World_Bullet_RemoveFromEntity;
ctx->funcs.RagMatrixToBody = World_Bullet_RagMatrixToBody;
ctx->funcs.RagCreateBody = World_Bullet_RagCreateBody;
ctx->funcs.RagMatrixFromJoint = World_Bullet_RagMatrixFromJoint;
ctx->funcs.RagMatrixFromBody = World_Bullet_RagMatrixFromBody;
ctx->funcs.RagEnableJoint = World_Bullet_RagEnableJoint;
ctx->funcs.RagCreateJoint = World_Bullet_RagCreateJoint;
ctx->funcs.RagDestroyBody = World_Bullet_RagDestroyBody;
ctx->funcs.RagDestroyJoint = World_Bullet_RagDestroyJoint;
ctx->funcs.RunFrame = World_Bullet_Frame;
ctx->funcs.PushCommand = World_Bullet_PushCommand;
ctx->funcs.Trace = World_Bullet_TraceEntity;
world->rbe = &ctx->funcs;
ctx->broadphase = new btDbvtBroadphase();
ctx->collisionconfig = new btDefaultCollisionConfiguration();
ctx->collisiondispatcher = new btCollisionDispatcher(ctx->collisionconfig);
ctx->solver = new btSequentialImpulseConstraintSolver;
ctx->dworld = new btDiscreteDynamicsWorld(ctx->collisiondispatcher, ctx->broadphase, ctx->solver, ctx->collisionconfig);
ctx->ownerfilter = new QCFilterCallback();
ctx->dworld->getPairCache()->setOverlapFilterCallback(ctx->ownerfilter);
ctx->dworld->setGravity(btVector3(0, -10, 0));
/*
if(physics_bullet_world_erp.value >= 0)
dWorldSetERP(world->rbe.world, physics_bullet_world_erp.value);
if(physics_bullet_world_cfm.value >= 0)
dWorldSetCFM(world->rbe.world, physics_bullet_world_cfm.value);
if (physics_bullet_world_damping.ival)
{
dWorldSetLinearDamping(world->rbe.world, (physics_bullet_world_damping_linear.value >= 0) ? (physics_bullet_world_damping_linear.value * physics_bullet_world_damping.value) : 0);
dWorldSetLinearDampingThreshold(world->rbe.world, (physics_bullet_world_damping_linear_threshold.value >= 0) ? (physics_bullet_world_damping_linear_threshold.value * physics_bullet_world_damping.value) : 0);
dWorldSetAngularDamping(world->rbe.world, (physics_bullet_world_damping_angular.value >= 0) ? (physics_bullet_world_damping_angular.value * physics_bullet_world_damping.value) : 0);
dWorldSetAngularDampingThreshold(world->rbe.world, (physics_bullet_world_damping_angular_threshold.value >= 0) ? (physics_bullet_world_damping_angular_threshold.value * physics_bullet_world_damping.value) : 0);
}
else
{
dWorldSetLinearDamping(world->rbe.world, 0);
dWorldSetLinearDampingThreshold(world->rbe.world, 0);
dWorldSetAngularDamping(world->rbe.world, 0);
dWorldSetAngularDampingThreshold(world->rbe.world, 0);
}
if (physics_bullet_autodisable.ival)
{
dWorldSetAutoDisableSteps(world->rbe.world, bound(1, physics_bullet_autodisable_steps.ival, 100));
dWorldSetAutoDisableTime(world->rbe.world, physics_bullet_autodisable_time.value);
dWorldSetAutoDisableAverageSamplesCount(world->rbe.world, bound(1, physics_bullet_autodisable_threshold_samples.ival, 100));
dWorldSetAutoDisableLinearThreshold(world->rbe.world, physics_bullet_autodisable_threshold_linear.value);
dWorldSetAutoDisableAngularThreshold(world->rbe.world, physics_bullet_autodisable_threshold_angular.value);
dWorldSetAutoDisableFlag (world->rbe.world, true);
}
else
dWorldSetAutoDisableFlag (world->rbe.world, false);
*/
}
static void QDECL World_Bullet_Shutdown(void)
{
if (rbefuncs)
rbefuncs->UnregisterPhysicsEngine("Bullet");
}
static bool World_Bullet_DoInit(void)
{
if (!rbefuncs || !rbefuncs->RegisterPhysicsEngine)
{
rbefuncs = nullptr;
Con_Printf("Bullet plugin failed: Engine is incompatible.\n");
}
else if (!rbefuncs->RegisterPhysicsEngine("Bullet", World_Bullet_Start))
Con_Printf("Bullet plugin failed: Engine already has a physics plugin active.\n");
else
{
World_Bullet_Init();
return true;
}
return false;
}
extern "C" qboolean Plug_Init(void)
{
rbefuncs = (rbeplugfuncs_t*)plugfuncs->GetEngineInterface("RBE", sizeof(*rbefuncs));
if (rbefuncs && ( rbefuncs->version < RBEPLUGFUNCS_VERSION ||
rbefuncs->wedictsize != sizeof(wedict_t)))
rbefuncs = nullptr;
plugfuncs->ExportFunction("Shutdown", (funcptr_t)World_Bullet_Shutdown);
return World_Bullet_DoInit()?qtrue:qfalse;
}
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