MineClone2/mods/ITEMS/mcl_bows/rocket.lua

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local S = minetest.get_translator(minetest.get_current_modname())
local math = math
local vector = vector
-- Time in seconds after which a stuck arrow is deleted
local ARROW_TIMEOUT = 1
-- Time after which stuck arrow is rechecked for being stuck
local STUCK_RECHECK_TIME = 0.1
--local GRAVITY = 9.81
local YAW_OFFSET = -math.pi/2
local function dir_to_pitch(dir)
--local dir2 = vector.normalize(dir)
local xz = math.abs(dir.x) + math.abs(dir.z)
return -math.atan2(-dir.y, xz)
end
local function damage_explosion(self, damagemulitplier)
if self._harmless then return end
local p = self.object:get_pos()
if not p then return end
mcl_explosions.explode(p, 3, {})
local objects = minetest.get_objects_inside_radius(p, 8)
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for _,obj in pairs(objects) do
if obj:is_player() then
mcl_util.deal_damage(obj, damagemulitplier - vector.distance(p, obj:get_pos()), {type = "explosion"})
elseif obj:get_luaentity() and obj:get_luaentity().is_mob then
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obj:punch(self.object, 1.0, {
full_punch_interval=1.0,
damage_groups={fleshy=damagemulitplier - vector.distance(p, obj:get_pos())},
}, self.object:get_velocity()) -- TODO possibly change the punch dir to be outwards instead of rocket velocity
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end
end
end
local function particle_explosion(self)
local particle_pattern = math.random(1, 3)
local fpitch
--local true_type
local type = math.random(1, 2)
local size = math.random(1, 3)
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local colors = {"red", "yellow", "blue", "green", "white"}
local this_colors = {colors[math.random(#colors)], colors[math.random(#colors)], colors[math.random(#colors)]}
if size == 1 then
fpitch = math.random(200, 300)
elseif size == 2 then
fpitch = math.random(100, 130)
else
fpitch = math.random(60, 70)
end
--[[if type == 1 then
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true_type = "Popper"
else
true_type = "Floof"
end]]
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if type == 1 then
minetest.sound_play("mcl_bows_firework", {
pos = self.object:get_pos(),
max_hear_distance = 100,
gain = 3.0,
pitch = fpitch/100
}, true)
else
minetest.sound_play("mcl_bows_firework_soft", {
pos = self.object:get_pos(),
max_hear_distance = 100,
gain = 4.0,
pitch = fpitch/100
}, true)
end
if particle_pattern == 1 then
minetest.add_particlespawner({
amount = 400 * size,
time = 0.0001,
minpos = self.object:get_pos(),
maxpos = self.object:get_pos(),
minvel = vector.new(-7 * size,-7 * size,-7 * size),
maxvel = vector.new(7 * size,7 * size,7 * size),
minexptime = .6 * size / 2,
maxexptime = .9 * size / 2,
minsize = 2 * size,
maxsize = 3 * size,
collisiondetection = false,
vertical = false,
texture = "mcl_bows_firework_"..this_colors[1]..".png",
glow = 14,
})
minetest.add_particlespawner({
amount = 400 * size,
time = 0.0001,
minpos = self.object:get_pos(),
maxpos = self.object:get_pos(),
minvel = vector.new(-2 * size,-2 * size,-2 * size),
maxvel = vector.new(2 * size,2 * size,2 * size),
minexptime = .6 * size / 2,
maxexptime = .9 * size / 2,
minsize = 2 * size,
maxsize = 3 * size,
collisiondetection = false,
vertical = false,
texture = "mcl_bows_firework_"..this_colors[2]..".png",
glow = 14,
})
minetest.add_particlespawner({
amount = 100 * size,
time = 0.0001,
minpos = self.object:get_pos(),
maxpos = self.object:get_pos(),
minvel = vector.new(-14 * size,-14 * size,-14 * size),
maxvel = vector.new(14 * size,14 * size,14 * size),
minexptime = .6 * size / 2,
maxexptime = .9 * size / 2,
minsize = 2 * size,
maxsize = 3 * size,
collisiondetection = false,
vertical = false,
texture = "mcl_bows_firework_"..this_colors[3]..".png",
glow = 14,
})
elseif particle_pattern == 2 then
minetest.add_particlespawner({
amount = 240 * size,
time = 0.0001,
minpos = self.object:get_pos(),
maxpos = self.object:get_pos(),
minvel = vector.new(-5 * size,-5 * size,-5 * size),
maxvel = vector.new(5 * size,5 * size,5 * size),
minexptime = .6 * size / 2,
maxexptime = .9 * size / 2,
minsize = 2 * size,
maxsize = 3 * size,
collisiondetection = false,
vertical = false,
texture = "mcl_bows_firework_"..this_colors[1]..".png",
glow = 14,
})
minetest.add_particlespawner({
amount = 500 * size,
time = 0.0001,
minpos = self.object:get_pos(),
maxpos = self.object:get_pos(),
minvel = vector.new(-2 * size,-2 * size,-2 * size),
maxvel = vector.new(2 * size,2 * size,2 * size),
minexptime = .6 * size / 2,
maxexptime = .9 * size / 2,
minsize = 2 * size,
maxsize = 3 * size,
collisiondetection = false,
vertical = false,
texture = "mcl_bows_firework_"..this_colors[2]..".png",
glow = 14,
})
minetest.add_particlespawner({
amount = 350 * size,
time = 0.0001,
minpos = self.object:get_pos(),
maxpos = self.object:get_pos(),
minvel = vector.new(-3 * size,-3 * size,-3 * size),
maxvel = vector.new(3 * size,3 * size,3 * size),
minexptime = .6 * size / 2,
maxexptime = .9 * size / 2,
minsize = 2 * size,
maxsize = 3 * size,
collisiondetection = false,
vertical = false,
texture = "mcl_bows_firework_"..this_colors[3]..".png",
glow = 14,
})
elseif particle_pattern == 3 then
minetest.add_particlespawner({
amount = 400 * size,
time = 0.0001,
minpos = self.object:get_pos(),
maxpos = self.object:get_pos(),
minvel = vector.new(-6 * size,-4 * size,-6 * size),
maxvel = vector.new(6 * size,4 * size,6 * size),
minexptime = .6 * size,
maxexptime = .9 * size,
minsize = 2 * size,
maxsize = 3 * size,
collisiondetection = false,
vertical = false,
texture = "mcl_bows_firework_"..this_colors[1]..".png",
glow = 14,
})
minetest.add_particlespawner({
amount = 120 * size,
time = 0.0001,
minpos = self.object:get_pos(),
maxpos = self.object:get_pos(),
minvel = vector.new(-8 * size,6 * size,-8 * size),
maxvel = vector.new(8 * size,6 * size,8 * size),
minexptime = .6 * size,
maxexptime = .9 * size,
minsize = 2 * size,
maxsize = 3 * size,
collisiondetection = false,
vertical = false,
texture = "mcl_bows_firework_"..this_colors[2]..".png",
glow = 14,
})
minetest.add_particlespawner({
amount = 130 * size,
time = 0.0001,
minpos = self.object:get_pos(),
maxpos = self.object:get_pos(),
minvel = vector.new(-3 * size,3 * size,-3 * size),
maxvel = vector.new(3 * size,3 * size,3 * size),
minexptime = .6 * size,
maxexptime = .9 * size,
minsize = 2 * size,
maxsize = 3 * size,
collisiondetection = false,
vertical = false,
texture = "mcl_bows_firework_"..this_colors[3]..".png",
glow = 14,
})
end
return size
end
local mod_awards = minetest.get_modpath("awards") and minetest.get_modpath("mcl_achievements")
local mod_button = minetest.get_modpath("mesecons_button")
local mod_target = minetest.get_modpath("mcl_target")
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local enable_pvp = minetest.settings:get_bool("enable_pvp")
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minetest.register_craftitem("mcl_bows:rocket", {
description = S("Arrow"),
_tt_help = S("Ammunition").."\n"..S("Damage from bow: 1-10").."\n"..S("Damage from dispenser: 3"),
_doc_items_longdesc = S("Arrows are ammunition for bows and dispensers.").."\n"..
S("An arrow fired from a bow has a regular damage of 1-9. At full charge, there's a 20% chance of a critical hit dealing 10 damage instead. An arrow fired from a dispenser always deals 3 damage.").."\n"..
S("Arrows might get stuck on solid blocks and can be retrieved again. They are also capable of pushing wooden buttons."),
_doc_items_usagehelp = S("To use arrows as ammunition for a bow, just put them anywhere in your inventory, they will be used up automatically. To use arrows as ammunition for a dispenser, place them in the dispenser's inventory. To retrieve an arrow that sticks in a block, simply walk close to it."),
inventory_image = "mcl_bows_rocket.png",
groups = { ammo=1, ammo_crossbow=1, ammo_bow_regular=1 },
_on_dispense = function(itemstack, dispenserpos, droppos, dropnode, dropdir)
-- Shoot arrow
local shootpos = vector.add(dispenserpos, vector.multiply(dropdir, 0.51))
local yaw = math.atan2(dropdir.z, dropdir.x) + YAW_OFFSET
mcl_bows.shoot_arrow(itemstack:get_name(), shootpos, dropdir, yaw, nil, 19, 3)
end,
})
local ARROW_ENTITY={
physical = true,
pointable = false,
visual = "mesh",
mesh = "mcl_bows_rocket.obj",
visual_size = {x=2.5, y=2.5},
textures = {"mcl_bows_rocket.png"},
collisionbox = {-0.19, -0.125, -0.19, 0.19, 0.125, 0.19},
collide_with_objects = false,
_fire_damage_resistant = true,
_lastpos={},
_startpos=nil,
_damage=1, -- Damage on impact
_is_critical=false, -- Whether this arrow would deal critical damage
_stuck=false, -- Whether arrow is stuck
_fuse=nil,-- Amount of time (in seconds) the arrow has been stuck so far
_fuserechecktimer=nil,-- An additional timer for periodically re-checking the stuck status of an arrow
_stuckin=nil, --Position of node in which arow is stuck.
_shooter=nil, -- ObjectRef of player or mob who shot it
_is_arrow = true,
_viscosity=0, -- Viscosity of node the arrow is currently in
_deflection_cooloff=0, -- Cooloff timer after an arrow deflection, to prevent many deflections in quick succession
}
-- Destroy arrow entity self at pos and drops it as an item
local function spawn_item(self, pos)
if not minetest.is_creative_enabled("") then
local item = minetest.add_item(pos, "mcl_bows:rocket")
item:set_velocity({x=0, y=0, z=0})
item:set_yaw(self.object:get_yaw())
end
mcl_burning.extinguish(self.object)
self.object:remove()
end
local function damage_particles(pos, is_critical)
if is_critical then
minetest.add_particlespawner({
amount = 15,
time = 0.1,
minpos = {x=pos.x-0.5, y=pos.y-0.5, z=pos.z-0.5},
maxpos = {x=pos.x+0.5, y=pos.y+0.5, z=pos.z+0.5},
minvel = {x=-0.1, y=-0.1, z=-0.1},
maxvel = {x=0.1, y=0.1, z=0.1},
minacc = {x=0, y=0, z=0},
maxacc = {x=0, y=0, z=0},
minexptime = 1,
maxexptime = 2,
minsize = 1.5,
maxsize = 1.5,
collisiondetection = false,
vertical = false,
texture = "mcl_particles_crit.png^[colorize:#bc7a57:127",
})
end
end
function ARROW_ENTITY.on_step(self, dtime)
mcl_burning.tick(self.object, dtime, self)
-- mcl_burning.tick may remove object immediately
if not self.object:get_pos() then return end
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self._time_in_air = self._time_in_air + .001
local pos = self.object:get_pos()
local dpos = table.copy(pos) -- digital pos
dpos = vector.round(dpos)
local node = minetest.get_node(dpos)
if not self._fuse then
self._fuse = 0
end
if not self._fuserechecktimer then
self._fuserechecktimer = 0
end
self._fuse = self._fuse + dtime
self._fuserechecktimer = self._fuserechecktimer + dtime
if self._fuse > ARROW_TIMEOUT then
self._stuck = true
end
if self._stuck then
if self._fuse > ARROW_TIMEOUT then
local eploded_particle = particle_explosion(self)
damage_explosion(self, eploded_particle * 17)
mcl_burning.extinguish(self.object)
self.object:remove()
return
end
-- Drop arrow as item when it is no longer stuck
-- FIXME: Arrows are a bit slow to react and continue to float in mid air for a few seconds.
if self._fuserechecktimer > STUCK_RECHECK_TIME then
local stuckin_def
if self._stuckin then
stuckin_def = minetest.registered_nodes[minetest.get_node(self._stuckin).name]
end
-- TODO: In MC, arrow just falls down without turning into an item
if stuckin_def and stuckin_def.walkable == false then
spawn_item(self, pos)
return
end
self._fuserechecktimer = 0
end
-- Pickup arrow if player is nearby (not in Creative Mode)
local objects = minetest.get_objects_inside_radius(pos, 1)
for _,obj in ipairs(objects) do
if obj:is_player() then
if self._collectable and not minetest.is_creative_enabled(obj:get_player_name()) then
if obj:get_inventory():room_for_item("main", "mcl_bows:rocket") then
obj:get_inventory():add_item("main", "mcl_bows:rocket")
minetest.sound_play("item_drop_pickup", {
pos = pos,
max_hear_distance = 16,
gain = 1.0,
}, true)
end
end
mcl_burning.extinguish(self.object)
self.object:remove()
return
end
end
-- Check for object "collision". Done every tick (hopefully this is not too stressing)
else
if self._in_player == false then
minetest.add_particlespawner({
amount = 1,
time = .0001,
minpos = pos,
maxpos = pos,
minvel = vector.new(-0.1,-0.1,-0.1),
maxvel = vector.new(0.1,0.1,0.1),
minexptime = 0.5,
maxexptime = 0.5,
minsize = 2,
maxsize = 2,
collisiondetection = false,
vertical = false,
texture = "mcl_bows_rocket_particle.png",
glow = 1,
})
end
-- We just check for any hurtable objects nearby.
-- The radius of 3 is fairly liberal, but anything lower than than will cause
-- arrow to hilariously go through mobs often.
-- TODO: Implement an ACTUAL collision detection (engine support needed).
local objs = minetest.get_objects_inside_radius(pos, 1.5)
local closest_object
local closest_distance
if self._deflection_cooloff > 0 then
self._deflection_cooloff = self._deflection_cooloff - dtime
end
-- Iterate through all objects and remember the closest attackable object
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local arrow_dir = self.object:get_velocity()
--create a raycast from the arrow based on the velocity of the arrow to deal with lag
local raycast = minetest.raycast(pos, vector.add(pos, vector.multiply(arrow_dir, 0.1)), true, false)
for hitpoint in raycast do
if hitpoint.type == "object" then
-- find the closest object that is in the way of the arrow
local ok = false
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if hitpoint.ref:is_player() and enable_pvp then
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ok = true
elseif not hitpoint.ref:is_player() and hitpoint.ref:get_luaentity() then
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if (hitpoint.ref:get_luaentity().is_mob or hitpoint.ref:get_luaentity()._hittable_by_projectile) then
ok = true
end
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end
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if ok then
local dist = vector.distance(hitpoint.ref:get_pos(), pos)
if not closest_object or not closest_distance then
closest_object = hitpoint.ref
closest_distance = dist
elseif dist < closest_distance then
closest_object = hitpoint.ref
closest_distance = dist
end
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end
end
end
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-- If an attackable object was found, we will damage the closest one only
if closest_object then
local obj = closest_object
local is_player = obj:is_player()
local lua = obj:get_luaentity()
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if obj == self._shooter and self._time_in_air > 1.02 or obj ~= self._shooter and (is_player or (lua and (lua.is_mob or lua._hittable_by_projectile))) then
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if obj:get_hp() > 0 then
-- Check if there is no solid node between arrow and object
local ray = minetest.raycast(self.object:get_pos(), obj:get_pos(), true)
for pointed_thing in ray do
if pointed_thing.type == "object" and pointed_thing.ref == closest_object then
-- Target reached! We can proceed now.
break
elseif pointed_thing.type == "node" then
local nn = minetest.get_node(minetest.get_pointed_thing_position(pointed_thing)).name
local def = minetest.registered_nodes[nn]
if (not def) or def.walkable then
-- There's a node in the way. Delete arrow without damage
mcl_burning.extinguish(self.object)
self.object:remove()
return
end
end
end
-- Punch target object but avoid hurting enderman.
if not lua or lua.name ~= "mobs_mc:rover" then
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if self._in_player == false then
damage_particles(self.object:get_pos(), self._is_critical)
end
if mcl_burning.is_burning(self.object) then
mcl_burning.set_on_fire(obj, 5)
end
if self._in_player == false then
obj:punch(self.object, 1.0, {
full_punch_interval=1.0,
damage_groups={fleshy=self._damage},
}, self.object:get_velocity())
if obj:is_player() then
local eploded_particle = particle_explosion(self)
damage_explosion(self, eploded_particle * 17)
mcl_burning.extinguish(self.object)
self.object:remove()
end
end
end
if is_player then
if self._shooter and self._shooter:is_player() and self._in_player == false then
-- “Ding” sound for hitting another player
minetest.sound_play({name="mcl_bows_hit_player", gain=0.1}, {to_player=self._shooter:get_player_name()}, true)
end
end
if lua then
local entity_name = lua.name
-- Achievement for hitting skeleton, wither skeleton or stray (TODO) with an arrow at least 50 meters away
-- NOTE: Range has been reduced because mobs unload much earlier than that ... >_>
-- TODO: This achievement should be given for the kill, not just a hit
if self._shooter and self._shooter:is_player() and vector.distance(pos, self._startpos) >= 20 then
if mod_awards and (entity_name == "mobs_mc:skeleton" or entity_name == "mobs_mc:stray" or entity_name == "mobs_mc:witherskeleton") then
awards.unlock(self._shooter:get_player_name(), "mcl:snipeSkeleton")
end
end
end
if self._in_player == false then
minetest.sound_play({name="mcl_bows_hit_other", gain=0.3}, {pos=self.object:get_pos(), max_hear_distance=16}, true)
end
end
if not obj:is_player() then
mcl_burning.extinguish(self.object)
if self._piercing == 0 then
local eploded_particle = particle_explosion(self)
damage_explosion(self, eploded_particle * 17)
self.object:remove()
end
end
return
end
end
end
-- Check for node collision
if self._lastpos.x~=nil and not self._stuck then
local def = minetest.registered_nodes[node.name]
local vel = self.object:get_velocity()
-- Arrow has stopped in one axis, so it probably hit something.
-- This detection is a bit clunky, but sadly, MT does not offer a direct collision detection for us. :-(
if (math.abs(vel.x) < 0.0001) or (math.abs(vel.z) < 0.0001) or (math.abs(vel.y) < 0.00001) then
-- Check for the node to which the arrow is pointing
local dir
if math.abs(vel.y) < 0.00001 then
if self._lastpos.y < pos.y then
dir = {x=0, y=1, z=0}
else
dir = {x=0, y=-1, z=0}
end
else
dir = minetest.facedir_to_dir(minetest.dir_to_facedir(minetest.yaw_to_dir(self.object:get_yaw()-YAW_OFFSET)))
end
self._stuckin = vector.add(dpos, dir)
local snode = minetest.get_node(self._stuckin)
local sdef = minetest.registered_nodes[snode.name]
-- If node is non-walkable, unknown or ignore, don't make arrow stuck.
-- This causes a deflection in the engine.
if not sdef or sdef.walkable == false or snode.name == "ignore" then
self._stuckin = nil
if self._deflection_cooloff <= 0 then
-- Lose 1/3 of velocity on deflection
local newvel = vector.multiply(vel, 0.6667)
self.object:set_velocity(newvel)
-- Reset deflection cooloff timer to prevent many deflections happening in quick succession
self._deflection_cooloff = 1.0
end
else
-- Node was walkable, make arrow stuck
self._stuck = true
self._fuserechecktimer = 0
self.object:set_velocity({x=0, y=0, z=0})
self.object:set_acceleration({x=0, y=0, z=0})
minetest.sound_play({name="mcl_bows_hit_other", gain=0.3}, {pos=self.object:get_pos(), max_hear_distance=16}, true)
if mcl_burning.is_burning(self.object) and snode.name == "mcl_tnt:tnt" then
tnt.ignite(self._stuckin)
end
-- Activate target
if mod_target and snode.name == "mcl_target:target_off" then
mcl_target.hit(self._stuckin, 1) --10 redstone ticks
end
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-- Push the button! Push, push, push the button!
if mod_button and minetest.get_item_group(node.name, "button") > 0 and minetest.get_item_group(node.name, "button_push_by_arrow") == 1 then
local bdir = minetest.wallmounted_to_dir(node.param2)
-- Check the button orientation
if vector.equals(vector.add(dpos, bdir), self._stuckin) then
mesecon.push_button(dpos, node)
end
end
end
elseif (def and def.liquidtype ~= "none") then
-- Slow down arrow in liquids
local v = def.liquid_viscosity
if not v then
v = 0
end
--local old_v = self._viscosity
self._viscosity = v
local vpenalty = math.max(0.1, 0.98 - 0.1 * v)
if math.abs(vel.x) > 0.001 then
vel.x = vel.x * vpenalty
end
if math.abs(vel.z) > 0.001 then
vel.z = vel.z * vpenalty
end
self.object:set_velocity(vel)
end
end
-- Update yaw
if not self._stuck then
local vel = self.object:get_velocity()
local yaw = minetest.dir_to_yaw(vel)+YAW_OFFSET
local pitch = dir_to_pitch(vel)
self.object:set_rotation({ x = 0, y = yaw, z = pitch })
end
-- Update internal variable
self._lastpos={x=pos.x, y=pos.y, z=pos.z}
end
-- Force recheck of stuck arrows when punched.
-- Otherwise, punching has no effect.
function ARROW_ENTITY.on_punch(self)
if self._stuck then
self._fuserechecktimer = STUCK_RECHECK_TIME
end
end
function ARROW_ENTITY.get_staticdata(self)
local out = {
lastpos = self._lastpos,
startpos = self._startpos,
damage = self._damage,
is_critical = self._is_critical,
stuck = self._stuck,
stuckin = self._stuckin,
}
if self._stuck then
-- If _fuse is missing for some reason, assume the maximum
if not self._fuse then
self._fuse = ARROW_TIMEOUT
end
out.stuckstarttime = minetest.get_gametime() - self._fuse
end
if self._shooter and self._shooter:is_player() then
out.shootername = self._shooter:get_player_name()
end
return minetest.serialize(out)
end
function ARROW_ENTITY.on_activate(self, staticdata, dtime_s)
self._time_in_air = 1.0
self._in_player = false
local data = minetest.deserialize(staticdata)
if data then
self._stuck = data.stuck
if data.stuck then
if data.stuckstarttime then
-- First, check if the stuck arrow is aleady past its life timer.
-- If yes, delete it.
self._fuse = minetest.get_gametime() - data.stuckstarttime
if self._fuse > ARROW_TIMEOUT then
mcl_burning.extinguish(self.object)
self.object:remove()
return
end
end
self._fuse = 2
-- Perform a stuck recheck on the next step.
self._fuserechecktimer = STUCK_RECHECK_TIME
self._stuckin = data.stuckin
end
-- Get the remaining arrow state
self._lastpos = data.lastpos
self._startpos = data.startpos
self._damage = data.damage
self._is_critical = data.is_critical
if data.shootername then
local shooter = minetest.get_player_by_name(data.shootername)
if shooter and shooter:is_player() then
self._shooter = shooter
end
end
end
self.object:set_armor_groups({ immortal = 1 })
end
minetest.register_entity("mcl_bows:rocket_entity", ARROW_ENTITY)
if minetest.get_modpath("mcl_core") and minetest.get_modpath("mcl_mobitems") then
minetest.register_craft({
output = "mcl_bows:rocket 1",
recipe = {
{"mcl_core:paper"},
{"mcl_fireworks:rocket_2"},
{"mcl_bows:arrow"},
}
})
end
if minetest.get_modpath("doc_identifier") then
doc.sub.identifier.register_object("mcl_bows:rocket_entity", "craftitems", "mcl_bows:rocket")
end