// This is an independent project of an individual developer. Dear PVS-Studio, please check it.
// PVS-Studio Static Code Analyzer for C, C++, C#, and Java: http://www.viva64.com
#include "autowall.h"
bool autowall::is_breakable_entity(IClientEntity* e)
{
if (!e || !e->EntIndex())
return false;
static auto is_breakable = util::FindSignature(crypt_str("client.dll"), crypt_str("55 8B EC 51 56 8B F1 85 F6 74 ? 83"));
auto take_damage = *(uintptr_t*)((uintptr_t)is_breakable + 0x26);
auto backup = *(uint8_t*)((uintptr_t)e + take_damage);
auto client_class = e->GetClientClass();
auto network_name = client_class->m_pNetworkName;
if (!strcmp(network_name, "CBreakableSurface"))
*(uint8_t*)((uintptr_t)e + take_damage) = DAMAGE_YES;
else if (!strcmp(network_name, "CBaseDoor") || !strcmp(network_name, "CDynamicProp"))
*(uint8_t*)((uintptr_t)e + take_damage) = DAMAGE_NO;
using Fn = bool(__thiscall*)(IClientEntity*);
auto result = ((Fn)is_breakable)(e);
*(uint8_t*)((uintptr_t)e + take_damage) = backup;
return result;
}
void autowall::scale_damage(player_t* e, CGameTrace& enterTrace, weapon_info_t* weaponData, float& currentDamage)
{
if (!e->is_player())
return;
auto is_armored = [&]()->bool
{
auto has_helmet = e->m_bHasHelmet();
auto armor_value = e->m_ArmorValue();
if (armor_value > 0)
{
switch (enterTrace.hitgroup)
{
case HITGROUP_GENERIC:
case HITGROUP_CHEST:
case HITGROUP_STOMACH:
case HITGROUP_LEFTARM:
case HITGROUP_RIGHTARM:
case HITGROUP_LEFTLEG:
case HITGROUP_RIGHTLEG:
case HITGROUP_GEAR:
return true;
case HITGROUP_HEAD:
return has_helmet || e->m_bHasHeavyArmor();
default:
return e->m_bHasHeavyArmor();
}
}
return false;
};
static auto mp_damage_scale_ct_head = m_cvar()->FindVar(crypt_str("mp_damage_scale_ct_head"));
static auto mp_damage_scale_t_head = m_cvar()->FindVar(crypt_str("mp_damage_scale_t_head"));
static auto mp_damage_scale_ct_body = m_cvar()->FindVar(crypt_str("mp_damage_scale_ct_body"));
static auto mp_damage_scale_t_body = m_cvar()->FindVar(crypt_str("mp_damage_scale_t_body"));
auto head_scale = e->m_iTeamNum() == 3 ? mp_damage_scale_ct_head->GetFloat() : mp_damage_scale_t_head->GetFloat();
auto body_scale = e->m_iTeamNum() == 3 ? mp_damage_scale_ct_body->GetFloat() : mp_damage_scale_t_body->GetFloat();
auto armor_heavy = e->m_bHasHeavyArmor();
auto armor_value = (float)e->m_ArmorValue();
if (armor_heavy)
head_scale *= 0.5f;
switch (enterTrace.hitgroup)
{
case HITGROUP_HEAD:
currentDamage *= 4.0f * head_scale;
break;
case HITGROUP_STOMACH:
currentDamage *= 1.25f * body_scale;
break;
case HITGROUP_CHEST:
case HITGROUP_LEFTARM:
case HITGROUP_RIGHTARM:
case HITGROUP_GEAR:
currentDamage *= body_scale;
break;
case HITGROUP_LEFTLEG:
case HITGROUP_RIGHTLEG:
currentDamage *= 0.75f * body_scale;
break;
}
if (is_armored())
{
auto armor_scale = 1.0f;
auto armor_ratio = weaponData->flArmorRatio * 0.5f;
auto armor_bonus_ratio = 0.5f;
if (armor_heavy)
{
armor_ratio *= 0.2f;
armor_bonus_ratio = 0.33f;
armor_scale = 0.25f;
}
auto new_damage = currentDamage * armor_ratio;
auto estiminated_damage = (currentDamage - currentDamage * armor_ratio) * armor_scale * armor_bonus_ratio;
if (estiminated_damage > armor_value)
new_damage = currentDamage - armor_value / armor_bonus_ratio;
currentDamage = new_damage;
}
}
void TraceLine(Vector& absStart, const Vector& absEnd, unsigned int mask, player_t* ignore, CGameTrace* ptr)
{
Ray_t ray;
ray.Init(absStart, absEnd);
CTraceFilter filter;
filter.pSkip = ignore;
m_trace()->TraceRay(ray, mask, &filter, ptr);
}
bool autowall::trace_to_exit(CGameTrace& enterTrace, CGameTrace& exitTrace, Vector startPosition, const Vector& direction)
{
static ConVar* sv_clip_penetration_traces_to_players = m_cvar()->FindVar(crypt_str("sv_clip_penetration_traces_to_players"));
Vector new_end, out;
float dist = 0.0f;
int iterations = 23;
int first_contents = 0;
int contents;
Ray_t r{};
while (1)
{
iterations--;
if (iterations <= 0 || dist > 90.f)
break;
dist += 4.0f;
out = startPosition + (direction * dist);
contents = m_trace()->GetPointContents(out, 0x4600400B, nullptr);
if (first_contents == -1)
first_contents = contents;
if (contents & 0x600400B && (!(contents & CONTENTS_HITBOX) || first_contents == contents))
continue;
new_end = out - (direction * 4.f);
TraceLine(out, new_end, 0x4600400B, nullptr, &exitTrace);
if (exitTrace.startsolid && (exitTrace.surface.flags & SURF_HITBOX) != 0)
{
TraceLine(out, startPosition, MASK_SHOT_HULL, (player_t*)exitTrace.hit_entity, &exitTrace);
if (exitTrace.DidHit() && !exitTrace.startsolid)
{
out = exitTrace.endpos;
return true;
}
continue;
}
if (!exitTrace.DidHit() || exitTrace.startsolid)
{
if (enterTrace.hit_entity != m_entitylist()->GetClientEntity(0))
{
if (exitTrace.hit_entity && is_breakable_entity(exitTrace.hit_entity))
{
exitTrace.surface.surfaceProps = enterTrace.surface.surfaceProps;
exitTrace.endpos = startPosition + direction;
return true;
}
}
continue;
}
if ((exitTrace.surface.flags & 0x80u) != 0)
{
if (enterTrace.hit_entity && is_breakable_entity(enterTrace.hit_entity) && exitTrace.hit_entity && is_breakable_entity(exitTrace.hit_entity))
{
out = exitTrace.endpos;
return true;
}
if (!(enterTrace.surface.flags & 0x80u))
continue;
}
if (exitTrace.plane.normal.Dot(direction) <= 1.f)
{
out -= direction * (exitTrace.fraction * 4.0f);
return true;
}
}
return false;
}
void clip_ray_to_player(const Vector& src, const Vector& end, const uint32_t mask, IClientEntity* player, ITraceFilter* filter, trace_t* t)
{
if (!player || player->IsDormant())
return;
if (filter && !filter->ShouldHitEntity(player, mask))
return;
trace_t t_new{};
Ray_t r{};
r.Init(src, end);
m_trace()->ClipRayToEntity(r, mask, player, &t_new);
if (t_new.fraction < t->fraction)
*t = t_new;
}
bool autowall::handle_bullet_penetration(weapon_info_t* weaponData, CGameTrace& enterTrace, Vector& eyePosition, const Vector& direction, int& possibleHitsRemaining, float& currentDamage, float penetrationPower, float ff_damage_reduction_bullets, float ff_damage_bullet_penetration, bool draw_impact)
{
if (weaponData->flPenetration <= 0.0f)
return false;
if (possibleHitsRemaining <= 0)
return false;
auto contents_grate = enterTrace.contents & CONTENTS_GRATE;
auto surf_nodraw = enterTrace.surface.flags & SURF_NODRAW;
auto enterSurfaceData = m_physsurface()->GetSurfaceData(enterTrace.surface.surfaceProps);
auto enter_material = enterSurfaceData->game.material;
auto is_solid_surf = enterTrace.contents >> 3 & CONTENTS_SOLID;
auto is_light_surf = enterTrace.surface.flags >> 7 & SURF_LIGHT;
if ((possibleHitsRemaining <= 0 && !surf_nodraw && !contents_grate && enter_material != CHAR_TEX_GRATE && enter_material != CHAR_TEX_GLASS)
|| penetrationPower <= 0)
return false;
trace_t exit_trace;
if (!trace_to_exit(enterTrace, exit_trace, enterTrace.endpos, direction) && !(m_trace()->GetPointContents(enterTrace.endpos, MASK_SHOT_HULL) & MASK_SHOT_HULL))
return false;
auto enter_penetration_modifier = enterSurfaceData->game.flPenetrationModifier;
auto exit_surface_data = m_physsurface()->GetSurfaceData(exit_trace.surface.surfaceProps);
if (!exit_surface_data)
return false;
auto exit_material = exit_surface_data->game.material;
auto exit_penetration_modifier = exit_surface_data->game.flPenetrationModifier;
auto combined_damage_modifier = 0.16f;
auto combined_penetration_modifier = (enter_penetration_modifier + exit_penetration_modifier) * 0.5f;
if (enter_material == CHAR_TEX_GLASS || enter_material == CHAR_TEX_GRATE)
{
combined_penetration_modifier <= 3;
combined_damage_modifier <= 0.05f;
}
else if (contents_grate || surf_nodraw) {
combined_damage_modifier = 0.16f;
combined_penetration_modifier = 1.0f;
}
else if (enter_material == CHAR_TEX_FLESH && ((player_t*)enterTrace.hit_entity)->m_iTeamNum() == g_ctx.local()->m_iTeamNum() && !ff_damage_reduction_bullets)
{
if (!ff_damage_bullet_penetration) //-V550
return false;
combined_penetration_modifier = ff_damage_bullet_penetration;
combined_damage_modifier = 0.16f;
}
if (enter_material == exit_material)
{
if (exit_material == CHAR_TEX_WOOD || exit_material == CHAR_TEX_CARDBOARD)
combined_penetration_modifier = 3.0f;
else if (exit_material == CHAR_TEX_PLASTIC)
combined_penetration_modifier = 2.0f;
}
auto penetration_modifier = std::fmaxf(0.0f, 1.0f / combined_penetration_modifier);
auto penetration_distance = (exit_trace.endpos - enterTrace.endpos).Length();
penetration_distance = penetration_distance * penetration_distance * penetration_modifier * 0.041666668f;
auto damage_modifier = max(0.0f, 3.0f / weaponData->flPenetration * 1.25f) * penetration_modifier * 3.0f + currentDamage * combined_damage_modifier + penetration_distance;
auto damage_lost = max(0.0f, damage_modifier);
if (damage_lost > currentDamage)
return false;
currentDamage -= damage_lost;
if (currentDamage < 1.0f)
return false;
eyePosition = exit_trace.endpos;
--possibleHitsRemaining;
return true;
}
bool autowall::fire_bullet(weapon_t* pWeapon, Vector& direction, bool& visible, float& currentDamage, int& hitbox, IClientEntity* e, float length, const Vector& pos)
{
if (!pWeapon)
return false;
auto weaponData = pWeapon->get_csweapon_info();
if (!weaponData)
return false;
CGameTrace enterTrace;
CTraceFilter filter;
filter.pSkip = g_ctx.local();
currentDamage = weaponData->iDamage;
auto eyePosition = pos;
auto currentDistance = 0.0f;
auto maxRange = weaponData->flRange;
auto penetrationDistance = 3000.0f;
auto penetrationPower = weaponData->flPenetration;
auto possibleHitsRemaining = 4;
while (currentDamage >= 1.0f)
{
maxRange -= currentDistance;
auto end = eyePosition + direction * maxRange;
CTraceFilter filter;
filter.pSkip = g_ctx.local();
util::trace_line(eyePosition, end, MASK_SHOT_HULL | CONTENTS_HITBOX, &filter, &enterTrace);
util::clip_trace_to_players(e, eyePosition, end + direction * 40.0f, MASK_SHOT_HULL | CONTENTS_HITBOX, &filter, &enterTrace);
auto enterSurfaceData = m_physsurface()->GetSurfaceData(enterTrace.surface.surfaceProps);
auto enterSurfPenetrationModifier = enterSurfaceData->game.flPenetrationModifier;
auto enterMaterial = enterSurfaceData->game.material;
if (enterTrace.fraction == 1.0f) //-V550
break;
currentDistance += enterTrace.fraction * maxRange;
currentDamage *= pow(weaponData->flRangeModifier, currentDistance / 500.0f);
if (currentDistance > penetrationDistance && weaponData->flPenetration || enterSurfPenetrationModifier < 0.1f) //-V1051
break;
auto canDoDamage = enterTrace.hitgroup != HITGROUP_GEAR && enterTrace.hitgroup != HITGROUP_GENERIC;
auto isPlayer = ((player_t*)enterTrace.hit_entity)->is_player();
auto isEnemy = ((player_t*)enterTrace.hit_entity)->m_iTeamNum() != g_ctx.local()->m_iTeamNum();
if (canDoDamage && isPlayer && isEnemy)
{
scale_damage((player_t*)enterTrace.hit_entity, enterTrace, weaponData, currentDamage);
hitbox = enterTrace.hitbox;
return true;
}
if (!possibleHitsRemaining)
break;
static auto damageReductionBullets = m_cvar()->FindVar(crypt_str("ff_damage_reduction_bullets"));
static auto damageBulletPenetration = m_cvar()->FindVar(crypt_str("ff_damage_bullet_penetration"));
if (!handle_bullet_penetration(weaponData, enterTrace, eyePosition, direction, possibleHitsRemaining, currentDamage, penetrationPower, damageReductionBullets->GetFloat(), damageBulletPenetration->GetFloat(), !e))
break;
visible = false;
}
return false;
}
autowall::returninfo_t autowall::wall_penetration(const Vector& eye_pos, Vector& point, IClientEntity* e)
{
g_ctx.globals.autowalling = true;
auto tmp = point - eye_pos;
auto angles = ZERO;
math::vector_angles(tmp, angles);
auto direction = ZERO;
math::angle_vectors(angles, direction);
direction.NormalizeInPlace();
auto visible = true;
auto damage = -1.0f;
auto hitbox = -1;
auto weapon = g_ctx.local()->m_hActiveWeapon().Get();
if (fire_bullet(weapon, direction, visible, damage, hitbox, e, 0.0f, eye_pos))
{
g_ctx.globals.autowalling = false;
return returninfo_t(visible, (int)damage, hitbox); //-V2003
}
else
{
g_ctx.globals.autowalling = false;
return returninfo_t(false, -1, -1);
}
}
