diff options
Diffstat (limited to 'src/baseq2/g_combat.c')
| -rw-r--r-- | src/baseq2/g_combat.c | 576 |
1 files changed, 576 insertions, 0 deletions
diff --git a/src/baseq2/g_combat.c b/src/baseq2/g_combat.c new file mode 100644 index 0000000..4675356 --- /dev/null +++ b/src/baseq2/g_combat.c @@ -0,0 +1,576 @@ +/* +Copyright (C) 1997-2001 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. + +*/ +// g_combat.c + +#include "g_local.h" + +/* +============ +CanDamage + +Returns qtrue if the inflictor can directly damage the target. Used for +explosions and melee attacks. +============ +*/ +qboolean CanDamage (edict_t *targ, edict_t *inflictor) +{ + vec3_t dest; + trace_t trace; + +// bmodels need special checking because their origin is 0,0,0 + if (targ->movetype == MOVETYPE_PUSH) + { + VectorAdd (targ->absmin, targ->absmax, dest); + VectorScale (dest, 0.5, dest); + trace = gi.trace (inflictor->s.origin, vec3_origin, vec3_origin, dest, inflictor, MASK_SOLID); + if (trace.fraction == 1.0) + return qtrue; + if (trace.ent == targ) + return qtrue; + return qfalse; + } + + trace = gi.trace (inflictor->s.origin, vec3_origin, vec3_origin, targ->s.origin, inflictor, MASK_SOLID); + if (trace.fraction == 1.0) + return qtrue; + + VectorCopy (targ->s.origin, dest); + dest[0] += 15.0; + dest[1] += 15.0; + trace = gi.trace (inflictor->s.origin, vec3_origin, vec3_origin, dest, inflictor, MASK_SOLID); + if (trace.fraction == 1.0) + return qtrue; + + VectorCopy (targ->s.origin, dest); + dest[0] += 15.0; + dest[1] -= 15.0; + trace = gi.trace (inflictor->s.origin, vec3_origin, vec3_origin, dest, inflictor, MASK_SOLID); + if (trace.fraction == 1.0) + return qtrue; + + VectorCopy (targ->s.origin, dest); + dest[0] -= 15.0; + dest[1] += 15.0; + trace = gi.trace (inflictor->s.origin, vec3_origin, vec3_origin, dest, inflictor, MASK_SOLID); + if (trace.fraction == 1.0) + return qtrue; + + VectorCopy (targ->s.origin, dest); + dest[0] -= 15.0; + dest[1] -= 15.0; + trace = gi.trace (inflictor->s.origin, vec3_origin, vec3_origin, dest, inflictor, MASK_SOLID); + if (trace.fraction == 1.0) + return qtrue; + + + return qfalse; +} + + +/* +============ +Killed +============ +*/ +void Killed (edict_t *targ, edict_t *inflictor, edict_t *attacker, int damage, vec3_t point) +{ + if (targ->health < -999) + targ->health = -999; + + targ->enemy = attacker; + + if ((targ->svflags & SVF_MONSTER) && (targ->deadflag != DEAD_DEAD)) + { +// targ->svflags |= SVF_DEADMONSTER; // now treat as a different content type + if (!(targ->monsterinfo.aiflags & AI_GOOD_GUY)) + { + level.killed_monsters++; + if (coop->value && attacker->client) + attacker->client->resp.score++; + // medics won't heal monsters that they kill themselves + if (strcmp(attacker->classname, "monster_medic") == 0) + targ->owner = attacker; + } + } + + if (targ->movetype == MOVETYPE_PUSH || targ->movetype == MOVETYPE_STOP || targ->movetype == MOVETYPE_NONE) + { // doors, triggers, etc + targ->die (targ, inflictor, attacker, damage, point); + return; + } + + if ((targ->svflags & SVF_MONSTER) && (targ->deadflag != DEAD_DEAD)) + { + targ->touch = NULL; + monster_death_use (targ); + } + + targ->die (targ, inflictor, attacker, damage, point); +} + + +/* +================ +SpawnDamage +================ +*/ +void SpawnDamage (int type, vec3_t origin, vec3_t normal, int damage) +{ + if (damage > 255) + damage = 255; + gi.WriteByte (svc_temp_entity); + gi.WriteByte (type); +// gi.WriteByte (damage); + gi.WritePosition (origin); + gi.WriteDir (normal); + gi.multicast (origin, MULTICAST_PVS); +} + + +/* +============ +T_Damage + +targ entity that is being damaged +inflictor entity that is causing the damage +attacker entity that caused the inflictor to damage targ + example: targ=monster, inflictor=rocket, attacker=player + +dir direction of the attack +point point at which the damage is being inflicted +normal normal vector from that point +damage amount of damage being inflicted +knockback force to be applied against targ as a result of the damage + +dflags these flags are used to control how T_Damage works + DAMAGE_RADIUS damage was indirect (from a nearby explosion) + DAMAGE_NO_ARMOR armor does not protect from this damage + DAMAGE_ENERGY damage is from an energy based weapon + DAMAGE_NO_KNOCKBACK do not affect velocity, just view angles + DAMAGE_BULLET damage is from a bullet (used for ricochets) + DAMAGE_NO_PROTECTION kills godmode, armor, everything +============ +*/ +static int CheckPowerArmor (edict_t *ent, vec3_t point, vec3_t normal, int damage, int dflags) +{ + gclient_t *client; + int save; + int power_armor_type; + int index; + int damagePerCell; + int pa_te_type; + int power; + int power_used; + + if (!damage) + return 0; + + client = ent->client; + + if (dflags & DAMAGE_NO_ARMOR) + return 0; + + if (client) + { + power_armor_type = PowerArmorType (ent); + if (power_armor_type != POWER_ARMOR_NONE) + { + index = ITEM_INDEX(FindItem("Cells")); + power = client->pers.inventory[index]; + } + } + else if (ent->svflags & SVF_MONSTER) + { + power_armor_type = ent->monsterinfo.power_armor_type; + power = ent->monsterinfo.power_armor_power; + } + else + return 0; + + if (power_armor_type == POWER_ARMOR_NONE) + return 0; + if (!power) + return 0; + + if (power_armor_type == POWER_ARMOR_SCREEN) + { + vec3_t vec; + float dot; + vec3_t forward; + + // only works if damage point is in front + AngleVectors (ent->s.angles, forward, NULL, NULL); + VectorSubtract (point, ent->s.origin, vec); + VectorNormalize (vec); + dot = DotProduct (vec, forward); + if (dot <= 0.3) + return 0; + + damagePerCell = 1; + pa_te_type = TE_SCREEN_SPARKS; + damage = damage / 3; + } + else + { + damagePerCell = 2; + pa_te_type = TE_SHIELD_SPARKS; + damage = (2 * damage) / 3; + } + + save = power * damagePerCell; + if (!save) + return 0; + if (save > damage) + save = damage; + + SpawnDamage (pa_te_type, point, normal, save); + ent->powerarmor_time = level.time + 0.2; + + power_used = save / damagePerCell; + + if (client) + client->pers.inventory[index] -= power_used; + else + ent->monsterinfo.power_armor_power -= power_used; + return save; +} + +static int CheckArmor (edict_t *ent, vec3_t point, vec3_t normal, int damage, int te_sparks, int dflags) +{ + gclient_t *client; + int save; + int index; + gitem_t *armor; + + if (!damage) + return 0; + + client = ent->client; + + if (!client) + return 0; + + if (dflags & DAMAGE_NO_ARMOR) + return 0; + + index = ArmorIndex (ent); + if (!index) + return 0; + + armor = GetItemByIndex (index); + + if (dflags & DAMAGE_ENERGY) + save = ceil(((gitem_armor_t *)armor->info)->energy_protection*damage); + else + save = ceil(((gitem_armor_t *)armor->info)->normal_protection*damage); + if (save >= client->pers.inventory[index]) + save = client->pers.inventory[index]; + + if (!save) + return 0; + + client->pers.inventory[index] -= save; + SpawnDamage (te_sparks, point, normal, save); + + return save; +} + +void M_ReactToDamage (edict_t *targ, edict_t *attacker) +{ + if (!(attacker->client) && !(attacker->svflags & SVF_MONSTER)) + return; + + if (attacker == targ || attacker == targ->enemy) + return; + + // if we are a good guy monster and our attacker is a player + // or another good guy, do not get mad at them + if (targ->monsterinfo.aiflags & AI_GOOD_GUY) + { + if (attacker->client || (attacker->monsterinfo.aiflags & AI_GOOD_GUY)) + return; + } + + // we now know that we are not both good guys + + // if attacker is a client, get mad at them because he's good and we're not + if (attacker->client) + { + targ->monsterinfo.aiflags &= ~AI_SOUND_TARGET; + + // this can only happen in coop (both new and old enemies are clients) + // only switch if can't see the current enemy + if (targ->enemy && targ->enemy->client) + { + if (visible(targ, targ->enemy)) + { + targ->oldenemy = attacker; + return; + } + targ->oldenemy = targ->enemy; + } + targ->enemy = attacker; + if (!(targ->monsterinfo.aiflags & AI_DUCKED)) + FoundTarget (targ); + return; + } + + // it's the same base (walk/swim/fly) type and a different classname and it's not a tank + // (they spray too much), get mad at them + if (((targ->flags & (FL_FLY|FL_SWIM)) == (attacker->flags & (FL_FLY|FL_SWIM))) && + (strcmp (targ->classname, attacker->classname) != 0) && + (strcmp(attacker->classname, "monster_tank") != 0) && + (strcmp(attacker->classname, "monster_supertank") != 0) && + (strcmp(attacker->classname, "monster_makron") != 0) && + (strcmp(attacker->classname, "monster_jorg") != 0) ) + { + if (targ->enemy && targ->enemy->client) + targ->oldenemy = targ->enemy; + targ->enemy = attacker; + if (!(targ->monsterinfo.aiflags & AI_DUCKED)) + FoundTarget (targ); + } + // if they *meant* to shoot us, then shoot back + else if (attacker->enemy == targ) + { + if (targ->enemy && targ->enemy->client) + targ->oldenemy = targ->enemy; + targ->enemy = attacker; + if (!(targ->monsterinfo.aiflags & AI_DUCKED)) + FoundTarget (targ); + } + // otherwise get mad at whoever they are mad at (help our buddy) unless it is us! + else if (attacker->enemy && attacker->enemy != targ) + { + if (targ->enemy && targ->enemy->client) + targ->oldenemy = targ->enemy; + targ->enemy = attacker->enemy; + if (!(targ->monsterinfo.aiflags & AI_DUCKED)) + FoundTarget (targ); + } +} + +qboolean CheckTeamDamage (edict_t *targ, edict_t *attacker) +{ + //FIXME make the next line real and uncomment this block + // if ((ability to damage a teammate == OFF) && (targ's team == attacker's team)) + return qfalse; +} + +void T_Damage (edict_t *targ, edict_t *inflictor, edict_t *attacker, vec3_t dir, vec3_t point, vec3_t normal, int damage, int knockback, int dflags, int mod) +{ + gclient_t *client; + int take; + int save; + int asave; + int psave; + int te_sparks; + + if (!targ->takedamage) + return; + + // friendly fire avoidance + // if enabled you can't hurt teammates (but you can hurt yourself) + // knockback still occurs + if ((targ != attacker) && ((deathmatch->value && ((int)(dmflags->value) & (DF_MODELTEAMS | DF_SKINTEAMS))) || coop->value)) + { + if (OnSameTeam (targ, attacker)) + { + if ((int)(dmflags->value) & DF_NO_FRIENDLY_FIRE) + damage = 0; + else + mod |= MOD_FRIENDLY_FIRE; + } + } + meansOfDeath = mod; + + // easy mode takes half damage + if (skill->value == 0 && deathmatch->value == 0 && targ->client) + { + damage *= 0.5; + if (!damage) + damage = 1; + } + + client = targ->client; + + if (dflags & DAMAGE_BULLET) + te_sparks = TE_BULLET_SPARKS; + else + te_sparks = TE_SPARKS; + + VectorNormalize(dir); + +// bonus damage for suprising a monster + if (!(dflags & DAMAGE_RADIUS) && (targ->svflags & SVF_MONSTER) && (attacker->client) && (!targ->enemy) && (targ->health > 0)) + damage *= 2; + + if (targ->flags & FL_NO_KNOCKBACK) + knockback = 0; + +// figure momentum add + if (!(dflags & DAMAGE_NO_KNOCKBACK)) + { + if ((knockback) && (targ->movetype != MOVETYPE_NONE) && (targ->movetype != MOVETYPE_BOUNCE) && (targ->movetype != MOVETYPE_PUSH) && (targ->movetype != MOVETYPE_STOP)) + { + vec3_t kvel; + float mass; + + if (targ->mass < 50) + mass = 50; + else + mass = targ->mass; + + if (targ->client && attacker == targ) + VectorScale (dir, 1600.0 * (float)knockback / mass, kvel); // the rocket jump hack... + else + VectorScale (dir, 500.0 * (float)knockback / mass, kvel); + + VectorAdd (targ->velocity, kvel, targ->velocity); + } + } + + take = damage; + save = 0; + + // check for godmode + if ( (targ->flags & FL_GODMODE) && !(dflags & DAMAGE_NO_PROTECTION) ) + { + take = 0; + save = damage; + SpawnDamage (te_sparks, point, normal, save); + } + + // check for invincibility + if ((client && client->invincible_framenum > level.framenum ) && !(dflags & DAMAGE_NO_PROTECTION)) + { + if (targ->pain_debounce_time < level.time) + { + gi.sound(targ, CHAN_ITEM, gi.soundindex("items/protect4.wav"), 1, ATTN_NORM, 0); + targ->pain_debounce_time = level.time + 2; + } + take = 0; + save = damage; + } + + psave = CheckPowerArmor (targ, point, normal, take, dflags); + take -= psave; + + asave = CheckArmor (targ, point, normal, take, te_sparks, dflags); + take -= asave; + + //treat cheat/powerup savings the same as armor + asave += save; + + // team damage avoidance + if (!(dflags & DAMAGE_NO_PROTECTION) && CheckTeamDamage (targ, attacker)) + return; + +// do the damage + if (take) + { + if ((targ->svflags & SVF_MONSTER) || (client)) + SpawnDamage (TE_BLOOD, point, normal, take); + else + SpawnDamage (te_sparks, point, normal, take); + + + targ->health = targ->health - take; + + if (targ->health <= 0) + { + if ((targ->svflags & SVF_MONSTER) || (client)) + targ->flags |= FL_NO_KNOCKBACK; + Killed (targ, inflictor, attacker, take, point); + return; + } + } + + if (targ->svflags & SVF_MONSTER) + { + M_ReactToDamage (targ, attacker); + if (!(targ->monsterinfo.aiflags & AI_DUCKED) && (take)) + { + targ->pain (targ, attacker, knockback, take); + // nightmare mode monsters don't go into pain frames often + if (skill->value == 3) + targ->pain_debounce_time = level.time + 5; + } + } + else if (client) + { + if (!(targ->flags & FL_GODMODE) && (take)) + targ->pain (targ, attacker, knockback, take); + } + else if (take) + { + if (targ->pain) + targ->pain (targ, attacker, knockback, take); + } + + // add to the damage inflicted on a player this frame + // the total will be turned into screen blends and view angle kicks + // at the end of the frame + if (client) + { + client->damage_parmor += psave; + client->damage_armor += asave; + client->damage_blood += take; + client->damage_knockback += knockback; + VectorCopy (point, client->damage_from); + } +} + + +/* +============ +T_RadiusDamage +============ +*/ +void T_RadiusDamage (edict_t *inflictor, edict_t *attacker, float damage, edict_t *ignore, float radius, int mod) +{ + float points; + edict_t *ent = NULL; + vec3_t v; + vec3_t dir; + + while ((ent = findradius(ent, inflictor->s.origin, radius)) != NULL) + { + if (ent == ignore) + continue; + if (!ent->takedamage) + continue; + + VectorAdd (ent->mins, ent->maxs, v); + VectorMA (ent->s.origin, 0.5, v, v); + VectorSubtract (inflictor->s.origin, v, v); + points = damage - 0.5 * VectorLength (v); + if (ent == attacker) + points = points * 0.5; + if (points > 0) + { + if (CanDamage (ent, inflictor)) + { + VectorSubtract (ent->s.origin, inflictor->s.origin, dir); + T_Damage (ent, inflictor, attacker, dir, inflictor->s.origin, vec3_origin, (int)points, (int)points, DAMAGE_RADIUS, mod); + } + } + } +} |