machinegun.qc File Reference

#include "machinegun.qh"
#include <common/items/item/ammo.qh>

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Functions
ERASEABLE float	MachineGun_Heat (float spread_accum)
ERASEABLE void	MachineGun_Update_Spread (entity actor,.entity weaponentity)
void	W_MachineGun_Attack (Weapon thiswep, int deathtype, entity actor,.entity weaponentity)
void	W_MachineGun_Attack_Auto (Weapon thiswep, entity actor,.entity weaponentity, int fire)
void	W_MachineGun_Attack_Burst (Weapon thiswep, entity actor,.entity weaponentity, int fire)
void	W_MachineGun_Attack_Frame (Weapon thiswep, entity actor,.entity weaponentity, int fire)

Variables
float	machinegun_spread_accumulation
float	spreadUpdateTime

Function Documentation

MachineGun_Heat()

ERASEABLE float MachineGun_Heat

(

float

spread_accum

)

Definition at line 34 of file machinegun.qc.

{
    // function for reducing mg's damage with no spread and adding damage with
    // heated up barrel or vice versa depending on the values of exposed cvars
    float heatMultiplierApplicationPercent = 0.5;
    float coldMultiplierApplicationPercent = 0.5;
 
    float spreadSpectrumDistance = fabs(WEP_CVAR(WEP_MACHINEGUN, spread_max) - WEP_CVAR(WEP_MACHINEGUN, spread_min));
 
    if (spreadSpectrumDistance > 0) // avoid division by 0, can never be < 0 either due to how it is set when defined
    {
        heatMultiplierApplicationPercent = spread_accum / spreadSpectrumDistance;
        coldMultiplierApplicationPercent = 1 - heatMultiplierApplicationPercent;
    }
 
    // example where low end has halved damage and high end has tripled damage:
    // with 50% spread accumulation: heat = (0.5 * 0.5) + (0.5 * 3) = 0.25 + 1.5 = 1.75 damage multiplier
    // with 90% spread accumulation: heat = (0.1 * 0.5) + (0.9 * 3) = 0.05 + 2.7 = 2.75 damage multiplier
    // NOTE: multipliers do not apply when unset for compatibility
    float cold_multiplier = WEP_CVAR(WEP_MACHINEGUN, spread_cold_damagemultiplier);
    float heat_multiplier = WEP_CVAR(WEP_MACHINEGUN, spread_heat_damagemultiplier);
    return (cold_multiplier ? coldMultiplierApplicationPercent * cold_multiplier : coldMultiplierApplicationPercent)
         + (heat_multiplier ? heatMultiplierApplicationPercent * heat_multiplier : heatMultiplierApplicationPercent);
}

References fabs(), and WEP_CVAR.

Referenced by W_MachineGun_Attack_Auto(), and W_MachineGun_Attack_Burst().

MachineGun_Update_Spread()

ERASEABLE void MachineGun_Update_Spread	(	entity	actor,
		.entity	weaponentity )

Definition at line 9 of file machinegun.qc.

{
    float spread_accum = actor.(weaponentity).machinegun_spread_accumulation;
 
    // time based spread decay
    if (WEP_CVAR(WEP_MACHINEGUN, spread_decay))
    {
        float spreadSpectrumDistance = fabs(WEP_CVAR(WEP_MACHINEGUN, spread_max) - WEP_CVAR(WEP_MACHINEGUN, spread_min));
        float timediff = time - actor.(weaponentity).spreadUpdateTime;
        spread_accum = bound(0,
            spread_accum - (timediff * WEP_CVAR(WEP_MACHINEGUN, spread_decay)),
            spreadSpectrumDistance);
    }
    else // legacy behavior for Nexuiz weapon balance
    {
        spread_accum = bound(WEP_CVAR(WEP_MACHINEGUN, spread_min),
            (WEP_CVAR(WEP_MACHINEGUN, spread_add) * actor.(weaponentity).misc_bulletcounter),
            WEP_CVAR(WEP_MACHINEGUN, spread_max));
    }
 
    actor.(weaponentity).machinegun_spread_accumulation = spread_accum;
    actor.(weaponentity).spreadUpdateTime = time;
}

References bound(), entity(), fabs(), machinegun_spread_accumulation, spreadUpdateTime, time, and WEP_CVAR.

Referenced by W_MachineGun_Attack_Auto(), and W_MachineGun_Attack_Burst().

W_MachineGun_Attack()

void W_MachineGun_Attack	(	Weapon	thiswep,
		int	deathtype,
		entity	actor,
		.entity	weaponentity )

Definition at line 59 of file machinegun.qc.

{
    W_SetupShot(actor, weaponentity, true, 0, SND_MACHINEGUN_FIRE, CH_WEAPON_A, ((actor.(weaponentity).misc_bulletcounter == 1) ? WEP_CVAR(WEP_MACHINEGUN, first_damage) : WEP_CVAR(WEP_MACHINEGUN, sustained_damage)), deathtype);
 
    if(!autocvar_g_norecoil)
    {
        actor.punchangle_x = random() - 0.5;
        actor.punchangle_y = random() - 0.5;
    }
 
    // this attack_finished just enforces a cooldown at the end of a burst
    ATTACK_FINISHED(actor, weaponentity) = time + WEP_CVAR(WEP_MACHINEGUN, first_refire) * W_WeaponRateFactor(actor);
 
    float spread_accuracy = (IS_DUCKED(actor) && IS_ONGROUND(actor))
        ? WEP_CVAR(WEP_MACHINEGUN, spread_crouchmod)
        : 1;
 
    if(actor.(weaponentity).misc_bulletcounter == 1)
        fireBullet_falloff(actor, weaponentity, w_shotorg, w_shotdir,
                           WEP_CVAR(WEP_MACHINEGUN, first_spread) * spread_accuracy,
                           WEP_CVAR(WEP_MACHINEGUN, solidpenetration),
                           WEP_CVAR(WEP_MACHINEGUN, first_damage),
                           WEP_CVAR(WEP_MACHINEGUN, damagefalloff_halflife),
                           WEP_CVAR(WEP_MACHINEGUN, damagefalloff_mindist),
                           WEP_CVAR(WEP_MACHINEGUN, damagefalloff_maxdist),
                           0,
                           WEP_CVAR(WEP_MACHINEGUN, first_force),
                           WEP_CVAR(WEP_MACHINEGUN, damagefalloff_forcehalflife),
                           deathtype, EFFECT_BULLET, true);
    else
        fireBullet_falloff(actor, weaponentity, w_shotorg, w_shotdir,
                           WEP_CVAR(WEP_MACHINEGUN, sustained_spread) * spread_accuracy,
                           WEP_CVAR(WEP_MACHINEGUN, solidpenetration),
                           WEP_CVAR(WEP_MACHINEGUN, sustained_damage),
                           WEP_CVAR(WEP_MACHINEGUN, damagefalloff_halflife),
                           WEP_CVAR(WEP_MACHINEGUN, damagefalloff_mindist),
                           WEP_CVAR(WEP_MACHINEGUN, damagefalloff_maxdist),
                           0,
                           WEP_CVAR(WEP_MACHINEGUN, sustained_force),
                           WEP_CVAR(WEP_MACHINEGUN, damagefalloff_forcehalflife),
                           deathtype, EFFECT_BULLET, true);
 
    W_MuzzleFlash(thiswep, actor, weaponentity, w_shotorg, w_shotdir);
 
    // casing code
    if(autocvar_g_casings >= 2)
    {
        makevectors(actor.v_angle); // for some reason, this is lost
        SpawnCasing(((random() * 50 + 50) * v_right) - (v_forward * (random() * 25 + 25)) - ((random() * 5 - 70) * v_up), vectoangles(v_forward), 3, actor, weaponentity);
    }
 
    if(actor.(weaponentity).misc_bulletcounter == 1)
        W_DecreaseAmmo(thiswep, actor, WEP_CVAR(WEP_MACHINEGUN, first_ammo), weaponentity);
    else
        W_DecreaseAmmo(thiswep, actor, WEP_CVAR(WEP_MACHINEGUN, sustained_ammo), weaponentity);
}

References ATTACK_FINISHED, autocvar_g_casings, autocvar_g_norecoil, CH_WEAPON_A, entity(), fireBullet_falloff(), IS_DUCKED, IS_ONGROUND, makevectors, random(), SpawnCasing(), time, v_forward, v_right, v_up, vectoangles(), W_DecreaseAmmo(), W_MuzzleFlash(), W_SetupShot, w_shotdir, w_shotorg, W_WeaponRateFactor(), and WEP_CVAR.

Referenced by W_MachineGun_Attack_Frame().

W_MachineGun_Attack_Auto()

void W_MachineGun_Attack_Auto	(	Weapon	thiswep,
		entity	actor,
		.entity	weaponentity,
		int	fire )

Definition at line 142 of file machinegun.qc.

{
    if(!(fire & 1) || !weapon_prepareattack_check(thiswep, actor, weaponentity, false, -1))
    {
        w_ready(thiswep, actor, weaponentity, fire);
        return;
    }
 
    if(!thiswep.wr_checkammo1(thiswep, actor, weaponentity))
    if(!(actor.items & IT_UNLIMITED_AMMO))
    {
        W_SwitchWeapon_Force(actor, w_getbestweapon(actor, weaponentity), weaponentity);
        w_ready(thiswep, actor, weaponentity, fire);
        return;
    }
 
    W_DecreaseAmmo(thiswep, actor, WEP_CVAR(WEP_MACHINEGUN, sustained_ammo), weaponentity);
 
    W_SetupShot(actor, weaponentity, true, 0, SND_MACHINEGUN_FIRE, CH_WEAPON_A, WEP_CVAR(WEP_MACHINEGUN, sustained_damage), thiswep.m_id);
    if(!autocvar_g_norecoil)
    {
        actor.punchangle_x = random() - 0.5;
        actor.punchangle_y = random() - 0.5;
    }
 
    MachineGun_Update_Spread(actor, weaponentity);
 
    float spread_accum = actor.(weaponentity).machinegun_spread_accumulation;
 
    float heat = MachineGun_Heat(spread_accum);
 
    float spread_accuracy;
    if (WEP_CVAR(WEP_MACHINEGUN, spread_min) < WEP_CVAR(WEP_MACHINEGUN, spread_max))
        spread_accuracy = WEP_CVAR(WEP_MACHINEGUN, spread_min) + spread_accum;
    else // inverted
        spread_accuracy = WEP_CVAR(WEP_MACHINEGUN, spread_min) - spread_accum;
 
    if (IS_DUCKED(actor) && IS_ONGROUND(actor))
        spread_accuracy *= WEP_CVAR(WEP_MACHINEGUN, spread_crouchmod);
 
    fireBullet_falloff(actor, weaponentity, w_shotorg, w_shotdir,
                       spread_accuracy,
                       WEP_CVAR(WEP_MACHINEGUN, solidpenetration),
                       WEP_CVAR(WEP_MACHINEGUN, sustained_damage) * heat,
                       WEP_CVAR(WEP_MACHINEGUN, damagefalloff_halflife),
                       WEP_CVAR(WEP_MACHINEGUN, damagefalloff_mindist),
                       WEP_CVAR(WEP_MACHINEGUN, damagefalloff_maxdist),
                       0,
                       WEP_CVAR(WEP_MACHINEGUN, sustained_force),
                       WEP_CVAR(WEP_MACHINEGUN, damagefalloff_forcehalflife),
                       thiswep.m_id, EFFECT_BULLET, true);
 
    ++actor.(weaponentity).misc_bulletcounter;
 
    spread_accum += WEP_CVAR(WEP_MACHINEGUN, spread_add);
 
    actor.(weaponentity).machinegun_spread_accumulation = spread_accum;
 
    W_MuzzleFlash(thiswep, actor, weaponentity, w_shotorg, w_shotdir);
 
    if(autocvar_g_casings >= 2) // casing code
    {
        makevectors(actor.v_angle); // for some reason, this is lost
        SpawnCasing(((random() * 50 + 50) * v_right) - (v_forward * (random() * 25 + 25)) - ((random() * 5 - 70) * v_up), vectoangles(v_forward), 3, actor, weaponentity);
    }
 
    ATTACK_FINISHED(actor, weaponentity) = time + WEP_CVAR(WEP_MACHINEGUN, first_refire) * W_WeaponRateFactor(actor);
    weapon_thinkf(actor, weaponentity, WFRAME_FIRE1, WEP_CVAR(WEP_MACHINEGUN, sustained_refire), W_MachineGun_Attack_Auto);
}

References ATTACK_FINISHED, autocvar_g_casings, autocvar_g_norecoil, CH_WEAPON_A, entity(), fireBullet_falloff(), IS_DUCKED, IS_ONGROUND, IT_UNLIMITED_AMMO, Weapon::m_id, MachineGun_Heat(), machinegun_spread_accumulation, MachineGun_Update_Spread(), makevectors, misc_bulletcounter, random(), SpawnCasing(), time, v_forward, v_right, v_up, vectoangles(), W_DecreaseAmmo(), w_getbestweapon, W_MachineGun_Attack_Auto(), W_MuzzleFlash(), w_ready(), W_SetupShot, w_shotdir, w_shotorg, W_SwitchWeapon_Force(), W_WeaponRateFactor(), weapon_prepareattack_check(), weapon_thinkf(), WEP_CVAR, and Weapon::wr_checkammo1().

Referenced by W_MachineGun_Attack_Auto().

W_MachineGun_Attack_Burst()

void W_MachineGun_Attack_Burst	(	Weapon	thiswep,
		entity	actor,
		.entity	weaponentity,
		int	fire )

Definition at line 212 of file machinegun.qc.

{
    W_SetupShot(actor, weaponentity, true, 0, SND_MACHINEGUN_FIRE, CH_WEAPON_A, WEP_CVAR(WEP_MACHINEGUN, sustained_damage), thiswep.m_id);
    if(!autocvar_g_norecoil)
    {
        actor.punchangle_x = random() - 0.5;
        actor.punchangle_y = random() - 0.5;
    }
 
    MachineGun_Update_Spread(actor, weaponentity);
 
    float spread_accum = actor.(weaponentity).machinegun_spread_accumulation;
 
    float heat = MachineGun_Heat(spread_accum);
 
    float spread_accuracy = WEP_CVAR(WEP_MACHINEGUN, burst_spread);
    if (IS_DUCKED(actor) && IS_ONGROUND(actor))
        spread_accuracy *= WEP_CVAR(WEP_MACHINEGUN, spread_crouchmod);
 
    fireBullet_falloff(actor, weaponentity, w_shotorg, w_shotdir,
                       spread_accuracy,
                       WEP_CVAR(WEP_MACHINEGUN, solidpenetration),
                       WEP_CVAR(WEP_MACHINEGUN, sustained_damage) * heat,
                       WEP_CVAR(WEP_MACHINEGUN, damagefalloff_halflife),
                       WEP_CVAR(WEP_MACHINEGUN, damagefalloff_mindist),
                       WEP_CVAR(WEP_MACHINEGUN, damagefalloff_maxdist),
                       0,
                       WEP_CVAR(WEP_MACHINEGUN, sustained_force),
                       WEP_CVAR(WEP_MACHINEGUN, damagefalloff_forcehalflife),
                       thiswep.m_id, EFFECT_BULLET, true);
 
    W_MuzzleFlash(thiswep, actor, weaponentity, w_shotorg, w_shotdir);
 
    if(autocvar_g_casings >= 2) // casing code
    {
        makevectors(actor.v_angle); // for some reason, this is lost
        SpawnCasing(((random() * 50 + 50) * v_right) - (v_forward * (random() * 25 + 25)) - ((random() * 5 - 70) * v_up), vectoangles(v_forward), 3, actor, weaponentity);
    }
 
    spread_accum += WEP_CVAR(WEP_MACHINEGUN, spread_add);
 
    actor.(weaponentity).machinegun_spread_accumulation = spread_accum;
 
    ++actor.(weaponentity).misc_bulletcounter;
    if(actor.(weaponentity).misc_bulletcounter == 0)
    {
        ATTACK_FINISHED(actor, weaponentity) = time + WEP_CVAR(WEP_MACHINEGUN, burst_refire2) * W_WeaponRateFactor(actor);
        weapon_thinkf(actor, weaponentity, WFRAME_FIRE2, WEP_CVAR(WEP_MACHINEGUN, burst_animtime), w_ready);
    }
    else
    {
        weapon_thinkf(actor, weaponentity, WFRAME_FIRE2, WEP_CVAR(WEP_MACHINEGUN, burst_refire), W_MachineGun_Attack_Burst);
    }
 
}

References ATTACK_FINISHED, autocvar_g_casings, autocvar_g_norecoil, CH_WEAPON_A, entity(), fireBullet_falloff(), IS_DUCKED, IS_ONGROUND, Weapon::m_id, MachineGun_Heat(), machinegun_spread_accumulation, MachineGun_Update_Spread(), makevectors, misc_bulletcounter, random(), SpawnCasing(), time, v_forward, v_right, v_up, vectoangles(), W_MachineGun_Attack_Burst(), W_MuzzleFlash(), w_ready(), W_SetupShot, w_shotdir, w_shotorg, W_WeaponRateFactor(), weapon_thinkf(), and WEP_CVAR.

Referenced by W_MachineGun_Attack_Burst().

W_MachineGun_Attack_Frame()

void W_MachineGun_Attack_Frame	(	Weapon	thiswep,
		entity	actor,
		.entity	weaponentity,
		int	fire )

Definition at line 117 of file machinegun.qc.

{
    if(actor.(weaponentity).m_weapon != actor.(weaponentity).m_switchweapon || !weapon_prepareattack_check(thiswep, actor, weaponentity, (fire & 2), -1)) // abort immediately if switching
    {
        w_ready(thiswep, actor, weaponentity, fire);
        return;
    }
    if(PHYS_INPUT_BUTTON_ATCK(actor))
    {
        if(!thiswep.wr_checkammo2(thiswep, actor, weaponentity))
        if(!(actor.items & IT_UNLIMITED_AMMO))
        {
            W_SwitchWeapon_Force(actor, w_getbestweapon(actor, weaponentity), weaponentity);
            w_ready(thiswep, actor, weaponentity, fire);
            return;
        }
        ++actor.(weaponentity).misc_bulletcounter;
        W_MachineGun_Attack(thiswep, thiswep.m_id, actor, weaponentity);
        weapon_thinkf(actor, weaponentity, WFRAME_FIRE1, WEP_CVAR(WEP_MACHINEGUN, sustained_refire), W_MachineGun_Attack_Frame);
    }
    else
        weapon_thinkf(actor, weaponentity, WFRAME_FIRE1, WEP_CVAR(WEP_MACHINEGUN, sustained_refire), w_ready);
}

References entity(), IT_UNLIMITED_AMMO, Weapon::m_id, misc_bulletcounter, PHYS_INPUT_BUTTON_ATCK, w_getbestweapon, W_MachineGun_Attack(), W_MachineGun_Attack_Frame(), w_ready(), W_SwitchWeapon_Force(), weapon_prepareattack_check(), weapon_thinkf(), WEP_CVAR, and Weapon::wr_checkammo2().

Referenced by W_MachineGun_Attack_Frame().

Variable Documentation

machinegun_spread_accumulation

float machinegun_spread_accumulation

Definition at line 5 of file machinegun.qc.

Referenced by MachineGun_Update_Spread(), W_MachineGun_Attack_Auto(), and W_MachineGun_Attack_Burst().

spreadUpdateTime

float spreadUpdateTime

Definition at line 6 of file machinegun.qc.

Referenced by MachineGun_Update_Spread().