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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 "freespace.h"
#include "math/curve.h"
#include "network/multi.h"
#include "object/objcollide.h"
#include "object/object.h"
#include "scripting/global_hooks.h"
#include "scripting/scripting.h"
#include "scripting/api/objs/vecmath.h"
#include "ship/ship.h"
#include "stats/scoring.h"
#include "weapon/weapon.h"
/**
* Checks weapon-weapon collisions.
* @param pair obj_pair pointer to the two objects. pair->a and pair->b are weapons.
* @return 1 if all future collisions between these can be ignored
*/
int collide_weapon_weapon( obj_pair * pair )
{
float A_radius, B_radius;
object *A = pair->a;
object *B = pair->b;
Assert( A->type == OBJ_WEAPON );
Assert( B->type == OBJ_WEAPON );
// Don't allow ship to shoot down its own missile.
if (A->parent_sig == B->parent_sig)
return 1;
// Only shoot down teammate's missile if not traveling in nearly same direction.
if (Weapons[A->instance].team == Weapons[B->instance].team)
if (vm_vec_dot(&A->orient.vec.fvec, &B->orient.vec.fvec) > 0.7f)
return 1;
// Ignore collisions involving a bomb if the bomb is not yet armed.
weapon *wpA, *wpB;
weapon_info *wipA, *wipB;
wpA = &Weapons[A->instance];
wpB = &Weapons[B->instance];
wipA = &Weapon_info[wpA->weapon_info_index];
wipB = &Weapon_info[wpB->weapon_info_index];
A_radius = A->radius;
B_radius = B->radius;
float A_time_alive = f2fl(Missiontime - wpA->creation_time);
float B_time_alive = f2fl(Missiontime - wpB->creation_time);
if (wipA->weapon_hitpoints > 0) {
if (!(wipA->wi_flags[Weapon::Info_Flags::No_radius_doubling])) {
A_radius *= 2; // Makes bombs easier to hit
}
// the erroneous extra time a bomb stays invulnerable without the fix
float extra_buggy_time = 0.0f;
if (wipA->is_locked_homing())
extra_buggy_time = (wipA->lifetime * LOCKED_HOMING_EXTENDED_LIFE_FACTOR) - wipA->lifetime;
if ((The_mission.ai_profile->flags[AI::Profile_Flags::Aspect_invulnerability_fix]) && (wipA->is_locked_homing()) && (wpA->homing_object != &obj_used_list)) {
if (A_time_alive < The_mission.ai_profile->delay_bomb_arm_timer[Game_skill_level] )
return 0;
}
else if (A_time_alive - extra_buggy_time < The_mission.ai_profile->delay_bomb_arm_timer[Game_skill_level] )
return 0;
}
if (wipB->weapon_hitpoints > 0) {
if (!(wipB->wi_flags[Weapon::Info_Flags::No_radius_doubling])) {
B_radius *= 2; // Makes bombs easier to hit
}
// the erroneous extra time a bomb stays invulnerable without the fix
float extra_buggy_time = 0.0f;
if (wipB->is_locked_homing())
extra_buggy_time = (wipB->lifetime * LOCKED_HOMING_EXTENDED_LIFE_FACTOR) - wipB->lifetime;
if ((The_mission.ai_profile->flags[AI::Profile_Flags::Aspect_invulnerability_fix]) && (wipB->is_locked_homing()) && (wpB->homing_object != &obj_used_list)) {
if (B_time_alive < The_mission.ai_profile->delay_bomb_arm_timer[Game_skill_level] )
return 0;
}
else if (B_time_alive - extra_buggy_time < The_mission.ai_profile->delay_bomb_arm_timer[Game_skill_level] )
return 0;
}
// Rats, do collision detection.
if (collide_subdivide(&A->last_pos, &A->pos, A_radius, &B->last_pos, &B->pos, B_radius))
{
bool a_override = false, b_override = false;
if (scripting::hooks::OnWeaponCollision->isActive()) {
a_override = scripting::hooks::OnWeaponCollision->isOverride(scripting::hooks::CollisionConditions{ {A, B} },
scripting::hook_param_list(scripting::hook_param("Self", 'o', A),
scripting::hook_param("Object", 'o', B),
scripting::hook_param("Weapon", 'o', A),
scripting::hook_param("WeaponB", 'o', B),
scripting::hook_param("Hitpos", 'o', B->pos)));
//Yes, this should be reversed
b_override = scripting::hooks::OnWeaponCollision->isOverride(scripting::hooks::CollisionConditions{ {A, B} },
scripting::hook_param_list(scripting::hook_param("Self", 'o', B),
scripting::hook_param("Object", 'o', A),
scripting::hook_param("Weapon", 'o', B),
scripting::hook_param("WeaponB", 'o', A),
scripting::hook_param("Hitpos", 'o', A->pos)));
}
// damage calculation should not be done on clients, the server will tell the client version of the bomb when to die
if(!a_override && !b_override && !MULTIPLAYER_CLIENT)
{
float aDamage = wipA->damage;
if (wipA->damage_curve_idx >= 0)
aDamage *= Curves[wipA->damage_curve_idx].GetValue(A_time_alive / wipA->lifetime);
if (wipB->armor_type_idx >= 0)
aDamage = Armor_types[wipB->armor_type_idx].GetDamage(aDamage, wipA->damage_type_idx, 1.0f, false);
float bDamage = wipB->damage;
if (wipB->damage_curve_idx >= 0)
bDamage *= Curves[wipB->damage_curve_idx].GetValue(B_time_alive / wipB->lifetime);
if (wipA->armor_type_idx >= 0)
bDamage = Armor_types[wipA->armor_type_idx].GetDamage(bDamage, wipB->damage_type_idx, 1.0f, false);
if (wipA->weapon_hitpoints > 0) {
if (wipB->weapon_hitpoints > 0) { // Two bombs collide, detonate both.
if ((wipA->wi_flags[Weapon::Info_Flags::Bomb]) && (wipB->wi_flags[Weapon::Info_Flags::Bomb])) {
wpA->weapon_flags.set(Weapon::Weapon_Flags::Destroyed_by_weapon);
weapon_hit(A, B, &A->pos, -1, nullptr);
wpB->weapon_flags.set(Weapon::Weapon_Flags::Destroyed_by_weapon);
weapon_hit(B, A, &B->pos, -1, nullptr);
} else {
A->hull_strength -= bDamage;
B->hull_strength -= aDamage;
// safety to make sure either of the weapons die - allow 'bulkier' to keep going
if ((A->hull_strength > 0.0f) && (B->hull_strength > 0.0f)) {
if (wipA->weapon_hitpoints > wipB->weapon_hitpoints) {
B->hull_strength = -1.0f;
} else {
A->hull_strength = -1.0f;
}
}
if (A->hull_strength < 0.0f) {
wpA->weapon_flags.set(Weapon::Weapon_Flags::Destroyed_by_weapon);
weapon_hit(A, B, &A->pos, -1, nullptr);
}
if (B->hull_strength < 0.0f) {
wpB->weapon_flags.set(Weapon::Weapon_Flags::Destroyed_by_weapon);
weapon_hit(B, A, &B->pos, -1, nullptr);
}
}
} else {
A->hull_strength -= bDamage;
wpB->weapon_flags.set(Weapon::Weapon_Flags::Destroyed_by_weapon);
weapon_hit(B, A, &B->pos, -1, nullptr);
if (A->hull_strength < 0.0f) {
wpA->weapon_flags.set(Weapon::Weapon_Flags::Destroyed_by_weapon);
weapon_hit(A, B, &A->pos, -1, nullptr);
}
}
} else if (wipB->weapon_hitpoints > 0) {
B->hull_strength -= aDamage;
wpA->weapon_flags.set(Weapon::Weapon_Flags::Destroyed_by_weapon);
weapon_hit(A, B, &A->pos, -1, nullptr);
if (B->hull_strength < 0.0f) {
wpB->weapon_flags.set(Weapon::Weapon_Flags::Destroyed_by_weapon);
weapon_hit(B, A, &B->pos, -1, nullptr);
}
}
// single player and multiplayer masters evaluate the scoring and kill stuff
if (!MULTIPLAYER_CLIENT) {
// If bomb was destroyed, do scoring
if (wipA->wi_flags[Weapon::Info_Flags::Bomb]) {
//Update stats. -Halleck
scoring_eval_hit(A, B, 0);
if (wpA->weapon_flags[Weapon::Weapon_Flags::Destroyed_by_weapon]) {
scoring_eval_kill_on_weapon(A, B);
}
}
if (wipB->wi_flags[Weapon::Info_Flags::Bomb]) {
//Update stats. -Halleck
scoring_eval_hit(B, A, 0);
if (wpB->weapon_flags[Weapon::Weapon_Flags::Destroyed_by_weapon]) {
scoring_eval_kill_on_weapon(B, A);
}
}
}
}
if (!scripting::hooks::OnWeaponCollision->isActive()) {
return 1;
}
if(!(b_override && !a_override))
{
scripting::hooks::OnWeaponCollision->run(scripting::hooks::CollisionConditions{ {A, B} },
scripting::hook_param_list(scripting::hook_param("Self", 'o', A),
scripting::hook_param("Object", 'o', B),
scripting::hook_param("Weapon", 'o', A),
scripting::hook_param("WeaponB", 'o', B),
scripting::hook_param("Hitpos", 'o', B->pos)));
}
else
{
// Yes, this should be reversed.
scripting::hooks::OnWeaponCollision->run(scripting::hooks::CollisionConditions{ {A, B} },
scripting::hook_param_list(scripting::hook_param("Self", 'o', B),
scripting::hook_param("Object", 'o', A),
scripting::hook_param("Weapon", 'o', B),
scripting::hook_param("WeaponB", 'o', A),
scripting::hook_param("Hitpos", 'o', A->pos)));
}
return 1;
}
return 0;
}
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