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/*
* Copyright (C) Volition, Inc. 1999. All rights reserved.
*
* All source code herein is the property of Volition, Inc. You may not sell
* or otherwise commercially exploit the source or things you created based on the
* source.
*
*/
#include "cmeasure/cmeasure.h"
#include "gamesnd/gamesnd.h"
#include "hud/hud.h"
#include "math/staticrand.h"
#include "mission/missionparse.h"
#include "network/multimsgs.h"
#include "object/object.h"
#include "ship/ship.h"
#include "weapon/weapon.h"
int Cmeasures_homing_check = 0;
int Countermeasures_enabled = 1; // Debug, set to 0 means no one can fire countermeasures.
const float CMEASURE_DETONATE_DISTANCE = 40.0f;
//Used to set a countermeasure velocity after being launched from a ship as a countermeasure
//ie not as a primary or secondary.
void cmeasure_set_ship_launch_vel(object *objp, object *parent_objp, int arand)
{
vec3d vel, rand_vec;
//Get cmeasure rear velocity in world
vm_vec_scale_add(&vel, &parent_objp->phys_info.vel, &parent_objp->orient.vec.fvec, -25.0f);
//Get random velocity vector
static_randvec(arand+1, &rand_vec);
//Add it to the rear velocity
vm_vec_scale_add2(&vel, &rand_vec, 2.0f);
objp->phys_info.vel = vel;
//Zero out this stuff so it isn't moving
vm_vec_zero(&objp->phys_info.rotvel);
vm_vec_zero(&objp->phys_info.max_vel);
vm_vec_zero(&objp->phys_info.max_rotvel);
// blow out his reverse thrusters. Or drag, same thing.
objp->phys_info.rotdamp = 10000.0f;
objp->phys_info.side_slip_time_const = 10000.0f;
objp->phys_info.max_vel.xyz.z = -25.0f;
vm_vec_copy_scale(&objp->phys_info.desired_vel, &objp->orient.vec.fvec, objp->phys_info.max_vel.xyz.z );
// if this cmeasure has a single segment trail, let the trail know since we just changed the velocity
// yeah this is hacky but that's what this function gets for CHANGING the velocity on objects with a ""CONSTANT VELOCITY""
weapon* wp = &Weapons[objp->instance];
if (wp->trail_ptr && wp->trail_ptr->single_segment) {
wp->trail_ptr->vel[0] = objp->phys_info.vel;
wp->trail_ptr->vel[1] = objp->phys_info.vel;
}
}
/**
* @brief If this is a player countermeasure, let the player know they evaded a missile.
* @param objp [description]
*
* During single player games, this function notifies the player that evasion has occurred.
* Multiplayer games ensure that #send_countermeasure_success_packet() is called to notify the other player.
*/
void cmeasure_maybe_alert_success(object *objp)
{
//Is this a countermeasure, and does it have a parent
if ( objp->type != OBJ_WEAPON || objp->parent < 0) {
return;
}
Assert(Weapon_info[Weapons[objp->instance].weapon_info_index].wi_flags[Weapon::Info_Flags::Cmeasure]);
if ( objp->parent == OBJ_INDEX(Player_obj) ) {
hud_start_text_flash(XSTR("Evaded", 1430), 800);
snd_play(gamesnd_get_game_sound(ship_get_sound(Player_obj, GameSounds::MISSILE_EVADED_POPUP)));
} else if ( Objects[objp->parent].flags[Object::Object_Flags::Player_ship] ) {
send_countermeasure_success_packet( objp->parent );
}
}
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