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Aurora.3/code/game/objects/items/weapons/shields.dm
LordFowl cb4a941dc1 Sword Reflection (#1637) 
Energy swords, shields, and ninja blades can now deflect projectiles.

Energy swords have a fairly moderate chance of reflecting energy weapons.
Energy shields have a much higher chance of reflecting energy weapons.
The ninja blade has the highest chance of reflecting energy weapons.

Energy sword and ninja blade can only effectively reflect shots to the groin, chest, and head.
Energy shield has full body coverage.

Energy sword has less "durability" than shield and blade (Can withstand less shots before shutting off.)

Neither sword, shield, nor blade can deflect shots to the back. Only the ablative vest provides full coverage.

Probably some other stuff I'm forgetting.
2017-03-06 00:35:09 +02:00

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//** Shield Helpers
//These are shared by various items that have shield-like behaviour
//bad_arc is the ABSOLUTE arc of directions from which we cannot block. If you want to fix it to e.g. the user's facing you will need to rotate the dirs yourself.
/proc/check_shield_arc(mob/user, var/bad_arc, atom/damage_source = null, mob/attacker = null)
//check attack direction
var/attack_dir = 0 //direction from the user to the source of the attack
if(istype(damage_source, /obj/item/projectile))
var/obj/item/projectile/P = damage_source
attack_dir = get_dir(get_turf(user), P.starting)
else if(attacker)
attack_dir = get_dir(get_turf(user), get_turf(attacker))
else if(damage_source)
attack_dir = get_dir(get_turf(user), get_turf(damage_source))
if(!(attack_dir && (attack_dir & bad_arc)))
return 1
return 0
/proc/default_parry_check(mob/user, mob/attacker, atom/damage_source)
//parry only melee attacks
if(istype(damage_source, /obj/item/projectile) || (attacker && get_dist(user, attacker) > 1) || user.incapacitated())
return 0
//block as long as they are not directly behind us
var/bad_arc = reverse_direction(user.dir) //arc of directions from which we cannot block
if(!check_shield_arc(user, bad_arc, damage_source, attacker))
return 0
return 1
/obj/item/weapon/shield
name = "shield"
var/base_block_chance = 50
/obj/item/weapon/shield/handle_shield(mob/user, var/damage, atom/damage_source = null, mob/attacker = null, var/def_zone = null, var/attack_text = "the attack")
if(user.incapacitated())
return 0
//block as long as they are not directly behind us
var/bad_arc = reverse_direction(user.dir) //arc of directions from which we cannot block
if(check_shield_arc(user, bad_arc, damage_source, attacker))
if(prob(get_block_chance(user, damage, damage_source, attacker)))
user.visible_message("<span class='danger'>\The [user] blocks [attack_text] with \the [src]!</span>")
return 1
return 0
/obj/item/weapon/shield/proc/get_block_chance(mob/user, var/damage, atom/damage_source = null, mob/attacker = null)
return base_block_chance
/obj/item/weapon/shield/riot
name = "riot shield"
desc = "A shield adept at blocking blunt objects from connecting with the torso of the shield wielder."
icon = 'icons/obj/weapons.dmi'
icon_state = "riot"
flags = CONDUCT
slot_flags = SLOT_BACK
force = 5.0
throwforce = 5.0
throw_speed = 1
throw_range = 4
w_class = 4.0
origin_tech = list(TECH_MATERIAL = 2)
matter = list("glass" = 7500, DEFAULT_WALL_MATERIAL = 1000)
attack_verb = list("shoved", "bashed")
var/cooldown = 0 //shield bash cooldown. based on world.time
/obj/item/weapon/shield/riot/handle_shield(mob/user)
. = ..()
if(.) playsound(user.loc, 'sound/weapons/Genhit.ogg', 50, 1)
/obj/item/weapon/shield/riot/get_block_chance(mob/user, var/damage, atom/damage_source = null, mob/attacker = null)
if(istype(damage_source, /obj/item/projectile))
var/obj/item/projectile/P = damage_source
//plastic shields do not stop bullets or lasers, even in space. Will block beanbags, rubber bullets, and stunshots just fine though.
if((is_sharp(P) && damage > 10) || istype(P, /obj/item/projectile/beam))
return 0
return base_block_chance
/obj/item/weapon/shield/riot/attackby(obj/item/weapon/W as obj, mob/user as mob)
if(istype(W, /obj/item/weapon/melee/baton))
if(cooldown < world.time - 25)
user.visible_message("<span class='warning'>[user] bashes [src] with [W]!</span>")
playsound(user.loc, 'sound/effects/shieldbash.ogg', 50, 1)
cooldown = world.time
else
..()
/*
* Energy Shield
*/
/obj/item/weapon/shield/energy
name = "energy combat shield"
desc = "A shield capable of stopping most projectile and melee attacks. It can be retracted, expanded, and stored anywhere."
icon = 'icons/obj/weapons.dmi'
icon_state = "eshield0" // eshield1 for expanded
flags = CONDUCT
force = 3.0
throwforce = 5.0
throw_speed = 1
throw_range = 4
w_class = 2
origin_tech = list(TECH_MATERIAL = 4, TECH_MAGNET = 3, TECH_ILLEGAL = 4)
attack_verb = list("shoved", "bashed")
var/shield_power = 150
var/active = 0
/obj/item/weapon/shield/energy/handle_shield(mob/user, var/damage, atom/damage_source = null, mob/attacker = null, var/def_zone = null, var/attack_text = "the attack")
if(!active)
return 0 //turn it on first!
if(user.incapacitated())
return 0
if(.)
spark(user.loc, 5)
playsound(user.loc, 'sound/weapons/blade1.ogg', 50, 1)
//block as long as they are not directly behind us
var/bad_arc = reverse_direction(user.dir) //arc of directions from which we cannot block
if(check_shield_arc(user, bad_arc, damage_source, attacker))
if(prob(get_block_chance(user, damage, damage_source, attacker)))
spark(user.loc, 5)
playsound(user.loc, 'sound/weapons/blade1.ogg', 50, 1)
shield_power -= round(damage/4)
if(shield_power <= 0)
visible_message("<span class='danger'>\The [user]'s [src.name] overloads!</span>")
active = 0
force = 3
update_icon()
w_class = 1
playsound(user, 'sound/weapons/saberoff.ogg', 50, 1)
shield_power = initial(shield_power)
return 0
if(istype(damage_source, /obj/item/projectile/energy) || istype(damage_source, /obj/item/projectile/beam))
var/obj/item/projectile/P = damage_source
var/reflectchance = 80 - round(damage/3)
if(P.starting && prob(reflectchance))
visible_message("<span class='danger'>\The [user]'s [src.name] reflects [attack_text]!</span>")
// Find a turf near or on the original location to bounce to
var/new_x = P.starting.x + pick(0, 0, 0, 0, 0, -1, 1, -2, 2)
var/new_y = P.starting.y + pick(0, 0, 0, 0, 0, -1, 1, -2, 2)
var/turf/curloc = get_turf(user)
// redirect the projectile
P.redirect(new_x, new_y, curloc, user)
return PROJECTILE_CONTINUE // complete projectile permutation
else
user.visible_message("<span class='danger'>\The [user] blocks [attack_text] with \the [src]!</span>")
return 1
else
user.visible_message("<span class='danger'>\The [user] blocks [attack_text] with \the [src]!</span>")
return 1
/obj/item/weapon/shield/energy/get_block_chance(mob/user, var/damage, atom/damage_source = null, mob/attacker = null)
if(istype(damage_source, /obj/item/projectile))
var/obj/item/projectile/P = damage_source
if((is_sharp(P) && damage > 10) || istype(P, /obj/item/projectile/beam))
return (base_block_chance - round(damage / 3)) //block bullets and beams using the old block chance
return base_block_chance
/obj/item/weapon/shield/energy/attack_self(mob/living/user as mob)
if ((CLUMSY in user.mutations) && prob(50))
user << "<span class='warning'>You beat yourself in the head with [src].</span>"
user.take_organ_damage(5)
active = !active
if (active)
force = 10
update_icon()
w_class = 4
playsound(user, 'sound/weapons/saberon.ogg', 50, 1)
user << "<span class='notice'>\The [src] is now active.</span>"
else
force = 3
update_icon()
w_class = 1
playsound(user, 'sound/weapons/saberoff.ogg', 50, 1)
user << "<span class='notice'>\The [src] can now be concealed.</span>"
if(istype(user,/mob/living/carbon/human))
var/mob/living/carbon/human/H = user
H.update_inv_l_hand()
H.update_inv_r_hand()
add_fingerprint(user)
return
/obj/item/weapon/shield/energy/update_icon()
icon_state = "eshield[active]"
if(active)
set_light(1.5, 1.5, "#006AFF")
else
set_light(0)
// tact
/obj/item/weapon/shield/riot/tact
name = "tactical shield"
desc = "A highly advanced ballistic shield crafted from durable materials and plated ablative panels. Can be collapsed for mobility."
icon = 'icons/obj/tactshield.dmi'
icon_state = "tactshield0"
item_state = "tactshield0"
contained_sprite = 1
force = 3.0
throwforce = 3.0
throw_speed = 3
throw_range = 4
w_class = 3
attack_verb = list("shoved", "bashed")
var/active = 0
/obj/item/weapon/shield/riot/tact/handle_shield(mob/user)
if(!active)
return 0 //turn it on first!
. = ..()
if(.)
if(.) playsound(user.loc, 'sound/weapons/Genhit.ogg', 50, 1)
/obj/item/weapon/shield/riot/tact/attack_self(mob/living/user)
active = !active
icon_state = "tactshield[active]"
item_state = "tactshield[active]"
playsound(src.loc, 'sound/weapons/empty.ogg', 50, 1)
if(active)
force = 5
throwforce = 5
throw_speed = 2
w_class = 4
slot_flags = SLOT_BACK
user << "<span class='notice'>You extend \the [src] downward with a sharp snap of your wrist.</span>"
else
force = 3
throwforce = 3
throw_speed = 3
w_class = 2
slot_flags = 0
user << "<span class='notice'>The [src] folds inwards neatly as you snap your wrist upwards and push it back into the frame.</span>"
if(istype(user,/mob/living/carbon/human))
var/mob/living/carbon/human/H = user
H.update_inv_l_hand()
H.update_inv_r_hand()
add_fingerprint(user)
return
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