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/*
base/projectile.cc
This file is part of the Osirion project and is distributed under
the terms and conditions of the GNU General Public License version 2
*/
#include "base/projectile.h"
#include "base/game.h"
#include "core/gameserver.h"
#include "math/functions.h"
#include "sys/sys.h"
namespace game
{
EntityProjectile::EntityProjectile(unsigned long lifespan) : EntityDynamic()
{
entity_moduletypeid = projectile_enttype;
//set_name("");
set_label("projectile");
//set_serverside(true);
set_flag(core::Entity::KeepAlive);
set_shape(core::Entity::Sphere);
set_radius(0.01f);
set_mass(radius());
//reset();
//const float damp = Game::g_damping->value();
//body()->setDamping(0.0f, 0.0f);
projectile_damage = 0.0f;
projectile_lifespan = lifespan;
projectile_timestamp = core::server()->timestamp();
projectile_ownerid = 0;
}
EntityProjectile::~EntityProjectile()
{
}
void EntityProjectile::upkeep(const unsigned long timestamp)
{
die();
}
void EntityProjectile::collision(core::Entity *other)
{
if (state() == core::Entity::Destroyed) {
return;
}
set_state(core::Entity::Destroyed);
// this method is a bullet callback, we can not reset() here
}
void EntityProjectile::frame(const unsigned long elapsed)
{
EntityDynamic::frame(elapsed);
if (projectile_timestamp + projectile_lifespan < core::server()->timestamp()) {
set_state(core::Entity::Destroyed);
}
if (state() == core::Entity::Destroyed) {
die();
}
}
void EntityProjectile::reset()
{
// no bullet physics on NonSolid entities
if (!radius() || has_flag(NonSolid)) {
return;
}
// remove Docked and Destroyed entities from the physics simulation
if (destroyed() || (state() == core::Entity::Docked) || (state() == core::Entity::Destroyed)) {
if (entity_body) {
if (entity_motionstate) {
delete entity_motionstate;
entity_motionstate = 0;
}
if (zone() && zone()->physics()) {
entity_zone->physics()->removeRigidBody(body());
}
if (entity_collision_shape) {
delete entity_collision_shape;
entity_collision_shape = 0;
}
for (CollisionShapes::iterator sit = entity_collision_child_shapes.begin(); sit != entity_collision_child_shapes.end(); sit++) {
delete (*sit);
(*sit) = 0;
}
entity_collision_child_shapes.clear();
if (entity_body) {
delete entity_body;
entity_body = 0;
}
if (entity_body_info) {
delete entity_body_info;
entity_body_info = 0;
}
}
return;
}
// location and orientation
btTransform t;
t.setIdentity();
t.setOrigin(to_btVector3(location()));
t.setBasis(to_btMatrix3x3(axis()));
// construct physics body if necessary
if (!entity_body) {
// use a sphere with a radius matching the entity
btSphereShape *sphereshape = new btSphereShape(radius());
entity_collision_shape = sphereshape;
// set margin
//entity_collision_shape->setMargin(core::Cvar::sv_collisionmargin->value());
// calculate inertia
btVector3 inertia(0, 0, 0);
if (entity_mass)
entity_collision_shape->calculateLocalInertia(entity_mass, inertia);
// create motion state
entity_motionstate = new btDefaultMotionState(t);
// create physics body
entity_body_info = new btRigidBody::btRigidBodyConstructionInfo(entity_mass, entity_motionstate, entity_collision_shape, inertia);
entity_body = new btRigidBody(*entity_body_info);
// point the bullet user pointer to the entity
entity_body->setUserPointer((void *) this);
// enable custom collision callback
entity_body->setCollisionFlags(entity_body->getCollisionFlags() | btCollisionObject::CF_CUSTOM_MATERIAL_CALLBACK);
//entity_body->setCollisionFlags(entity_body->getCollisionFlags() | btCollisionObject::CF_NO_CONTACT_RESPONSE);
if (entity_mass) {
entity_body->setActivationState(DISABLE_DEACTIVATION);
} else {
entity_body->setActivationState(ISLAND_SLEEPING);
}
if (zone())
zone()->physics()->addRigidBody(entity_body);
}
// transfer entity location to motion state
body()->setLinearVelocity(btVector3(0.0f, 0.0f, 0.0f));
body()->setAngularVelocity(btVector3(0.0f, 0.0f, 0.0f));
body()->setWorldTransform(t);
body()->clearForces();
if (motionstate()) {
motionstate()->setWorldTransform(t);
}
set_dirty();
}
} // namespace game
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