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Merge pull request 'Refactor mcl_throwing API' (#1396) from api-throwing into master

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Reviewed-on: https://git.minetest.land/MineClone2/MineClone2/pulls/1396
This commit is contained in:
AFCMS 2021-03-27 06:00:02 +00:00
commit 826d60e16e
6 changed files with 431 additions and 391 deletions
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50
mods/ITEMS/mcl_fishing/init.lua
View File

@ -173,7 +173,7 @@ local fish = function(itemstack, player, pointed_thing)
if noent == true then if noent == true then
local playerpos = player:get_pos() local playerpos = player:get_pos()
local dir = player:get_look_dir() local dir = player:get_look_dir()
local obj = mcl_throwing.throw("mcl_throwing:flying_bobber", {x=playerpos.x, y=playerpos.y+1.5, z=playerpos.z}, dir, 15, player:get_player_name()) local obj = mcl_throwing.throw("mcl_fishing:flying_bobber", {x=playerpos.x, y=playerpos.y+1.5, z=playerpos.z}, dir, 15, player:get_player_name())
end end
end end
@ -295,6 +295,52 @@ bobber_ENTITY.on_step = bobber_on_step
minetest.register_entity("mcl_fishing:bobber_entity", bobber_ENTITY) minetest.register_entity("mcl_fishing:bobber_entity", bobber_ENTITY)
local flying_bobber_ENTITY={
physical = false,
timer=0,
textures = {"mcl_fishing_bobber.png"}, --FIXME: Replace with correct texture.
visual_size = {x=0.5, y=0.5},
collisionbox = {0,0,0,0,0,0},
pointable = false,
get_staticdata = get_staticdata,
on_activate = on_activate,
_lastpos={},
_thrower = nil,
objtype="fishing",
}
-- Movement function of flying bobber
local flying_bobber_on_step = function(self, dtime)
self.timer=self.timer+dtime
local pos = self.object:get_pos()
local node = minetest.get_node(pos)
local def = minetest.registered_nodes[node.name]
--local player = minetest.get_player_by_name(self._thrower)
-- Destroy when hitting a solid node
if self._lastpos.x~=nil then
if (def and (def.walkable or def.liquidtype == "flowing" or def.liquidtype == "source")) or not def then
local make_child= function(object)
local ent = object:get_luaentity()
ent.player = self._thrower
ent.child = true
end
make_child(minetest.add_entity(self._lastpos, "mcl_fishing:bobber_entity"))
self.object:remove()
return
end
end
self._lastpos={x=pos.x, y=pos.y, z=pos.z} -- Set lastpos-->Node will be added at last pos outside the node
end
flying_bobber_ENTITY.on_step = flying_bobber_on_step
minetest.register_entity("mcl_fishing:flying_bobber_entity", flying_bobber_ENTITY)
mcl_throwing.register_throwable_object("mcl_fishing:flying_bobber", "mcl_fishing:flying_bobber_entity", 5)
-- If player leaves area, remove bobber. -- If player leaves area, remove bobber.
minetest.register_on_leaveplayer(function(player) minetest.register_on_leaveplayer(function(player)
local objs = minetest.get_objects_inside_radius(player:get_pos(), 250) local objs = minetest.get_objects_inside_radius(player:get_pos(), 250)
@ -449,7 +495,7 @@ minetest.register_craftitem("mcl_fishing:clownfish_raw", {
minetest.register_craftitem("mcl_fishing:pufferfish_raw", { minetest.register_craftitem("mcl_fishing:pufferfish_raw", {
description = S("Pufferfish"), description = S("Pufferfish"),
_tt_help = minetest.colorize("#FFFF00", S("Very poisonous")), _tt_help = minetest.colorize(mcl_colors.YELLOW, S("Very poisonous")),
_doc_items_longdesc = S("Pufferfish are a common species of fish and can be obtained by fishing. They can technically be eaten, but they are very bad for humans. Eating a pufferfish only restores 1 hunger point and will poison you very badly (which drains your health non-fatally) and causes serious food poisoning (which increases your hunger)."), _doc_items_longdesc = S("Pufferfish are a common species of fish and can be obtained by fishing. They can technically be eaten, but they are very bad for humans. Eating a pufferfish only restores 1 hunger point and will poison you very badly (which drains your health non-fatally) and causes serious food poisoning (which increases your hunger)."),
inventory_image = "mcl_fishing_pufferfish_raw.png", inventory_image = "mcl_fishing_pufferfish_raw.png",
on_place = minetest.item_eat(1), on_place = minetest.item_eat(1),

2
mods/ITEMS/mcl_fishing/mod.conf
View File

@ -1,3 +1,3 @@
name = mcl_fishing name = mcl_fishing
description = Adds fish and fishing poles to go fishing. description = Adds fish and fishing poles to go fishing.
depends = mcl_core, mcl_sounds, mcl_loot, mcl_mobs, mcl_enchanting depends = mcl_core, mcl_sounds, mcl_loot, mcl_mobs, mcl_enchanting, mcl_throwing, mcl_colors

35
mods/ITEMS/mcl_throwing/API.md Normal file
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@ -0,0 +1,35 @@
# mcl_throwing
## mcl_throwing.throw(throw_item, pos, dir, velocity, thrower)
Throw a throwable item.
* throw_item: itemstring of the throwable item
* pos: initial position of the entity
* dir: direction where the throwable item will be thrown
* velocity: (optional) will overide the default velocity value (can be nil)
* thrower: (optional) player/entity who throw the object (can be nil)
## mcl_throwing.register_throwable_object(name, entity, velocity)
Register a throwable item.
* name: itemname of the throwable object
* entity: entity thrown
* velocity: initial velocity of the entity
## mcl_throwing.dispense_function(stack, dispenserpos, droppos, dropnode, dropdir)
Throw throwable item from dispencer.
Shouldn't be called directly.
Must be used in item definition:
`_on_dispense = mcl_throwing.dispense_function,`
## mcl_throwing.get_player_throw_function(entity_name, velocity)
Return a function who handle item throwing (to be used in item definition)
Handle creative mode, and throw params.
* entity_name: the name of the entity to throw
* velocity: (optional) velocity overide (can be nil)

398
mods/ITEMS/mcl_throwing/init.lua
View File

@ -2,7 +2,7 @@ mcl_throwing = {}
local S = minetest.get_translator("mcl_throwing") local S = minetest.get_translator("mcl_throwing")
local mod_death_messages = minetest.get_modpath("mcl_death_messages") local mod_death_messages = minetest.get_modpath("mcl_death_messages")
local mod_fishing = minetest.get_modpath("mcl_fishing") local modpath = minetest.get_modpath(minetest.get_current_modname())
-- --
-- Snowballs and other throwable items -- Snowballs and other throwable items
@ -10,21 +10,15 @@ local mod_fishing = minetest.get_modpath("mcl_fishing")
local GRAVITY = tonumber(minetest.settings:get("movement_gravity")) local GRAVITY = tonumber(minetest.settings:get("movement_gravity"))
local entity_mapping = { local entity_mapping = {}
["mcl_throwing:flying_bobber"] = "mcl_throwing:flying_bobber_entity", local velocities = {}
["mcl_throwing:snowball"] = "mcl_throwing:snowball_entity",
["mcl_throwing:egg"] = "mcl_throwing:egg_entity",
["mcl_throwing:ender_pearl"] = "mcl_throwing:ender_pearl_entity",
}
local velocities = { function mcl_throwing.register_throwable_object(name, entity, velocity)
["mcl_throwing:flying_bobber_entity"] = 5, entity_mapping[name] = entity
["mcl_throwing:snowball_entity"] = 22, velocities[name] = velocity
["mcl_throwing:egg_entity"] = 22, end
["mcl_throwing:ender_pearl_entity"] = 22,
}
mcl_throwing.throw = function(throw_item, pos, dir, velocity, thrower) function mcl_throwing.throw(throw_item, pos, dir, velocity, thrower)
if velocity == nil then if velocity == nil then
velocity = velocities[throw_item] velocity = velocities[throw_item]
end end
@ -44,7 +38,7 @@ mcl_throwing.throw = function(throw_item, pos, dir, velocity, thrower)
end end
-- Throw item -- Throw item
local player_throw_function = function(entity_name, velocity) function mcl_throwing.get_player_throw_function(entity_name, velocity)
local func = function(item, player, pointed_thing) local func = function(item, player, pointed_thing)
local playerpos = player:get_pos() local playerpos = player:get_pos()
local dir = player:get_look_dir() local dir = player:get_look_dir()
@ -57,7 +51,7 @@ local player_throw_function = function(entity_name, velocity)
return func return func
end end
local dispense_function = function(stack, dispenserpos, droppos, dropnode, dropdir) function mcl_throwing.dispense_function(stack, dispenserpos, droppos, dropnode, dropdir)
-- Launch throwable item -- Launch throwable item
local shootpos = vector.add(dispenserpos, vector.multiply(dropdir, 0.51)) local shootpos = vector.add(dispenserpos, vector.multiply(dropdir, 0.51))
mcl_throwing.throw(stack:get_name(), shootpos, dropdir) mcl_throwing.throw(stack:get_name(), shootpos, dropdir)
@ -85,374 +79,4 @@ local on_activate = function(self, staticdata, dtime_s)
end end
end end
-- The snowball entity dofile(modpath.."/register.lua")
local snowball_ENTITY={
physical = false,
timer=0,
textures = {"mcl_throwing_snowball.png"},
visual_size = {x=0.5, y=0.5},
collisionbox = {0,0,0,0,0,0},
pointable = false,
get_staticdata = get_staticdata,
on_activate = on_activate,
_thrower = nil,
_lastpos={},
}
local egg_ENTITY={
physical = false,
timer=0,
textures = {"mcl_throwing_egg.png"},
visual_size = {x=0.45, y=0.45},
collisionbox = {0,0,0,0,0,0},
pointable = false,
get_staticdata = get_staticdata,
on_activate = on_activate,
_thrower = nil,
_lastpos={},
}
-- Ender pearl entity
local pearl_ENTITY={
physical = false,
timer=0,
textures = {"mcl_throwing_ender_pearl.png"},
visual_size = {x=0.9, y=0.9},
collisionbox = {0,0,0,0,0,0},
pointable = false,
get_staticdata = get_staticdata,
on_activate = on_activate,
_lastpos={},
_thrower = nil, -- Player ObjectRef of the player who threw the ender pearl
}
local flying_bobber_ENTITY={
physical = false,
timer=0,
textures = {"mcl_fishing_bobber.png"}, --FIXME: Replace with correct texture.
visual_size = {x=0.5, y=0.5},
collisionbox = {0,0,0,0,0,0},
pointable = false,
get_staticdata = get_staticdata,
on_activate = on_activate,
_lastpos={},
_thrower = nil,
objtype="fishing",
}
local check_object_hit = function(self, pos, dmg)
for _,object in pairs(minetest.get_objects_inside_radius(pos, 1.5)) do
local entity = object:get_luaentity()
if entity
and entity.name ~= self.object:get_luaentity().name then
if object:is_player() and self._thrower ~= object:get_player_name() then
-- TODO: Deal knockback
self.object:remove()
return true
elseif (entity._cmi_is_mob == true or entity._hittable_by_projectile) and (self._thrower ~= object) then
-- FIXME: Knockback is broken
object:punch(self.object, 1.0, {
full_punch_interval = 1.0,
damage_groups = dmg,
}, nil)
return true
end
end
end
return false
end
local snowball_particles = function(pos, vel)
local vel = vector.normalize(vector.multiply(vel, -1))
minetest.add_particlespawner({
amount = 20,
time = 0.001,
minpos = pos,
maxpos = pos,
minvel = vector.add({x=-2, y=3, z=-2}, vel),
maxvel = vector.add({x=2, y=5, z=2}, vel),
minacc = {x=0, y=-9.81, z=0},
maxacc = {x=0, y=-9.81, z=0},
minexptime = 1,
maxexptime = 3,
minsize = 0.7,
maxsize = 0.7,
collisiondetection = true,
collision_removal = true,
object_collision = false,
texture = "weather_pack_snow_snowflake"..math.random(1,2)..".png",
})
end
-- Snowball on_step()--> called when snowball is moving.
local snowball_on_step = function(self, dtime)
self.timer=self.timer+dtime
local pos = self.object:get_pos()
local vel = self.object:get_velocity()
local node = minetest.get_node(pos)
local def = minetest.registered_nodes[node.name]
-- Destroy when hitting a solid node
if self._lastpos.x~=nil then
if (def and def.walkable) or not def then
minetest.sound_play("mcl_throwing_snowball_impact_hard", { pos = pos, max_hear_distance=16, gain=0.7 }, true)
snowball_particles(self._lastpos, vel)
self.object:remove()
return
end
end
if check_object_hit(self, pos, {snowball_vulnerable = 3}) then
minetest.sound_play("mcl_throwing_snowball_impact_soft", { pos = pos, max_hear_distance=16, gain=0.7 }, true)
snowball_particles(pos, vel)
self.object:remove()
return
end
self._lastpos={x=pos.x, y=pos.y, z=pos.z} -- Set _lastpos-->Node will be added at last pos outside the node
end
-- Movement function of egg
local egg_on_step = function(self, dtime)
self.timer=self.timer+dtime
local pos = self.object:get_pos()
local node = minetest.get_node(pos)
local def = minetest.registered_nodes[node.name]
-- Destroy when hitting a solid node with chance to spawn chicks
if self._lastpos.x~=nil then
if (def and def.walkable) or not def then
-- 1/8 chance to spawn a chick
-- FIXME: Chicks have a quite good chance to spawn in walls
local r = math.random(1,8)
-- Turn given object into a child
local make_child= function(object)
local ent = object:get_luaentity()
object:set_properties({
visual_size = { x = ent.base_size.x/2, y = ent.base_size.y/2 },
collisionbox = {
ent.base_colbox[1]/2,
ent.base_colbox[2]/2,
ent.base_colbox[3]/2,
ent.base_colbox[4]/2,
ent.base_colbox[5]/2,
ent.base_colbox[6]/2,
}
})
ent.child = true
end
if r == 1 then
make_child(minetest.add_entity(self._lastpos, "mobs_mc:chicken"))
-- BONUS ROUND: 1/32 chance to spawn 3 additional chicks
local r = math.random(1,32)
if r == 1 then
local offsets = {
{ x=0.7, y=0, z=0 },
{ x=-0.7, y=0, z=-0.7 },
{ x=-0.7, y=0, z=0.7 },
}
for o=1, 3 do
local pos = vector.add(self._lastpos, offsets[o])
make_child(minetest.add_entity(pos, "mobs_mc:chicken"))
end
end
end
minetest.sound_play("mcl_throwing_egg_impact", { pos = self.object:get_pos(), max_hear_distance=10, gain=0.5 }, true)
self.object:remove()
return
end
end
-- Destroy when hitting a mob or player (no chick spawning)
if check_object_hit(self, pos) then
minetest.sound_play("mcl_throwing_egg_impact", { pos = self.object:get_pos(), max_hear_distance=10, gain=0.5 }, true)
self.object:remove()
return
end
self._lastpos={x=pos.x, y=pos.y, z=pos.z} -- Set lastpos-->Node will be added at last pos outside the node
end
-- Movement function of ender pearl
local pearl_on_step = function(self, dtime)
self.timer=self.timer+dtime
local pos = self.object:get_pos()
pos.y = math.floor(pos.y)
local node = minetest.get_node(pos)
local nn = node.name
local def = minetest.registered_nodes[node.name]
-- Destroy when hitting a solid node
if self._lastpos.x~=nil then
local walkable = (def and def.walkable)
-- No teleport for hitting ignore for now. Otherwise the player could get stuck.
-- FIXME: This also means the player loses an ender pearl for throwing into unloaded areas
if node.name == "ignore" then
self.object:remove()
-- Activate when hitting a solid node or a plant
elseif walkable or nn == "mcl_core:vine" or nn == "mcl_core:deadbush" or minetest.get_item_group(nn, "flower") ~= 0 or minetest.get_item_group(nn, "sapling") ~= 0 or minetest.get_item_group(nn, "plant") ~= 0 or minetest.get_item_group(nn, "mushroom") ~= 0 or not def then
local player = minetest.get_player_by_name(self._thrower)
if player then
-- Teleport and hurt player
-- First determine good teleport position
local dir = {x=0, y=0, z=0}
local v = self.object:get_velocity()
if walkable then
local vc = table.copy(v) -- vector for calculating
-- Node is walkable, we have to find a place somewhere outside of that node
vc = vector.normalize(vc)
-- Zero-out the two axes with a lower absolute value than
-- the axis with the strongest force
local lv, ld
lv, ld = math.abs(vc.y), "y"
if math.abs(vc.x) > lv then
lv, ld = math.abs(vc.x), "x"
end
if math.abs(vc.z) > lv then
lv, ld = math.abs(vc.z), "z"
end
if ld ~= "x" then vc.x = 0 end
if ld ~= "y" then vc.y = 0 end
if ld ~= "z" then vc.z = 0 end
-- Final tweaks to the teleporting pos, based on direction
-- Impact from the side
dir.x = vc.x * -1
dir.z = vc.z * -1
-- Special case: top or bottom of node
if vc.y > 0 then
-- We need more space when impact is from below
dir.y = -2.3
elseif vc.y < 0 then
-- Standing on top
dir.y = 0.5
end
end
-- If node was not walkable, no modification to pos is made.
-- Final teleportation position
local telepos = vector.add(pos, dir)
local telenode = minetest.get_node(telepos)
--[[ It may be possible that telepos is walkable due to the algorithm.
Especially when the ender pearl is faster horizontally than vertical.
This applies final fixing, just to be sure we're not in a walkable node ]]
if not minetest.registered_nodes[telenode.name] or minetest.registered_nodes[telenode.name].walkable then
if v.y < 0 then
telepos.y = telepos.y + 0.5
else
telepos.y = telepos.y - 2.3
end
end
local oldpos = player:get_pos()
-- Teleport and hurt player
player:set_pos(telepos)
player:set_hp(player:get_hp() - 5, { type = "fall", from = "mod" })
-- 5% chance to spawn endermite at the player's origin
local r = math.random(1,20)
if r == 1 then
minetest.add_entity(oldpos, "mobs_mc:endermite")
end
end
self.object:remove()
return
end
end
self._lastpos={x=pos.x, y=pos.y, z=pos.z} -- Set lastpos-->Node will be added at last pos outside the node
end
-- Movement function of flying bobber
local flying_bobber_on_step = function(self, dtime)
self.timer=self.timer+dtime
local pos = self.object:get_pos()
local node = minetest.get_node(pos)
local def = minetest.registered_nodes[node.name]
--local player = minetest.get_player_by_name(self._thrower)
-- Destroy when hitting a solid node
if self._lastpos.x~=nil then
if (def and (def.walkable or def.liquidtype == "flowing" or def.liquidtype == "source")) or not def then
local make_child= function(object)
local ent = object:get_luaentity()
ent.player = self._thrower
ent.child = true
end
make_child(minetest.add_entity(self._lastpos, "mcl_fishing:bobber_entity"))
self.object:remove()
return
end
end
self._lastpos={x=pos.x, y=pos.y, z=pos.z} -- Set lastpos-->Node will be added at last pos outside the node
end
snowball_ENTITY.on_step = snowball_on_step
egg_ENTITY.on_step = egg_on_step
pearl_ENTITY.on_step = pearl_on_step
flying_bobber_ENTITY.on_step = flying_bobber_on_step
minetest.register_entity("mcl_throwing:snowball_entity", snowball_ENTITY)
minetest.register_entity("mcl_throwing:egg_entity", egg_ENTITY)
minetest.register_entity("mcl_throwing:ender_pearl_entity", pearl_ENTITY)
minetest.register_entity("mcl_throwing:flying_bobber_entity", flying_bobber_ENTITY)
local how_to_throw = S("Use the punch key to throw.")
-- Snowball
minetest.register_craftitem("mcl_throwing:snowball", {
description = S("Snowball"),
_tt_help = S("Throwable"),
_doc_items_longdesc = S("Snowballs can be thrown or launched from a dispenser for fun. Hitting something with a snowball does nothing."),
_doc_items_usagehelp = how_to_throw,
inventory_image = "mcl_throwing_snowball.png",
stack_max = 16,
groups = { weapon_ranged = 1 },
on_use = player_throw_function("mcl_throwing:snowball_entity"),
_on_dispense = dispense_function,
})
-- Egg
minetest.register_craftitem("mcl_throwing:egg", {
description = S("Egg"),
_tt_help = S("Throwable").."\n"..S("Chance to hatch chicks when broken"),
_doc_items_longdesc = S("Eggs can be thrown or launched from a dispenser and breaks on impact. There is a small chance that 1 or even 4 chicks will pop out of the egg."),
_doc_items_usagehelp = how_to_throw,
inventory_image = "mcl_throwing_egg.png",
stack_max = 16,
on_use = player_throw_function("mcl_throwing:egg_entity"),
_on_dispense = dispense_function,
groups = { craftitem = 1 },
})
-- Ender Pearl
minetest.register_craftitem("mcl_throwing:ender_pearl", {
description = S("Ender Pearl"),
_tt_help = S("Throwable").."\n"..minetest.colorize("#FFFF00", S("Teleports you on impact for cost of 5 HP")),
_doc_items_longdesc = S("An ender pearl is an item which can be used for teleportation at the cost of health. It can be thrown and teleport the thrower to its impact location when it hits a solid block or a plant. Each teleportation hurts the user by 5 hit points."),
_doc_items_usagehelp = how_to_throw,
wield_image = "mcl_throwing_ender_pearl.png",
inventory_image = "mcl_throwing_ender_pearl.png",
stack_max = 16,
on_use = player_throw_function("mcl_throwing:ender_pearl_entity"),
groups = { transport = 1 },
})

2
mods/ITEMS/mcl_throwing/mod.conf
View File

@ -1,3 +1,3 @@
name = mcl_throwing name = mcl_throwing
depends = mcl_fishing depends = mcl_colors
optional_depends = mcl_core, mcl_mobitems, doc optional_depends = mcl_core, mcl_mobitems, doc

335
mods/ITEMS/mcl_throwing/register.lua Normal file
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@ -0,0 +1,335 @@
local S = minetest.get_translator(minetest.get_current_modname())
-- The snowball entity
local snowball_ENTITY={
physical = false,
timer=0,
textures = {"mcl_throwing_snowball.png"},
visual_size = {x=0.5, y=0.5},
collisionbox = {0,0,0,0,0,0},
pointable = false,
get_staticdata = get_staticdata,
on_activate = on_activate,
_thrower = nil,
_lastpos={},
}
local egg_ENTITY={
physical = false,
timer=0,
textures = {"mcl_throwing_egg.png"},
visual_size = {x=0.45, y=0.45},
collisionbox = {0,0,0,0,0,0},
pointable = false,
get_staticdata = get_staticdata,
on_activate = on_activate,
_thrower = nil,
_lastpos={},
}
-- Ender pearl entity
local pearl_ENTITY={
physical = false,
timer=0,
textures = {"mcl_throwing_ender_pearl.png"},
visual_size = {x=0.9, y=0.9},
collisionbox = {0,0,0,0,0,0},
pointable = false,
get_staticdata = get_staticdata,
on_activate = on_activate,
_lastpos={},
_thrower = nil, -- Player ObjectRef of the player who threw the ender pearl
}
local check_object_hit = function(self, pos, dmg)
for _,object in pairs(minetest.get_objects_inside_radius(pos, 1.5)) do
local entity = object:get_luaentity()
if entity
and entity.name ~= self.object:get_luaentity().name then
if object:is_player() and self._thrower ~= object:get_player_name() then
-- TODO: Deal knockback
self.object:remove()
return true
elseif (entity._cmi_is_mob == true or entity._hittable_by_projectile) and (self._thrower ~= object) then
-- FIXME: Knockback is broken
object:punch(self.object, 1.0, {
full_punch_interval = 1.0,
damage_groups = dmg,
}, nil)
return true
end
end
end
return false
end
local snowball_particles = function(pos, vel)
local vel = vector.normalize(vector.multiply(vel, -1))
minetest.add_particlespawner({
amount = 20,
time = 0.001,
minpos = pos,
maxpos = pos,
minvel = vector.add({x=-2, y=3, z=-2}, vel),
maxvel = vector.add({x=2, y=5, z=2}, vel),
minacc = {x=0, y=-9.81, z=0},
maxacc = {x=0, y=-9.81, z=0},
minexptime = 1,
maxexptime = 3,
minsize = 0.7,
maxsize = 0.7,
collisiondetection = true,
collision_removal = true,
object_collision = false,
texture = "weather_pack_snow_snowflake"..math.random(1,2)..".png",
})
end
-- Snowball on_step()--> called when snowball is moving.
local snowball_on_step = function(self, dtime)
self.timer=self.timer+dtime
local pos = self.object:get_pos()
local vel = self.object:get_velocity()
local node = minetest.get_node(pos)
local def = minetest.registered_nodes[node.name]
-- Destroy when hitting a solid node
if self._lastpos.x~=nil then
if (def and def.walkable) or not def then
minetest.sound_play("mcl_throwing_snowball_impact_hard", { pos = pos, max_hear_distance=16, gain=0.7 }, true)
snowball_particles(self._lastpos, vel)
self.object:remove()
return
end
end
if check_object_hit(self, pos, {snowball_vulnerable = 3}) then
minetest.sound_play("mcl_throwing_snowball_impact_soft", { pos = pos, max_hear_distance=16, gain=0.7 }, true)
snowball_particles(pos, vel)
self.object:remove()
return
end
self._lastpos={x=pos.x, y=pos.y, z=pos.z} -- Set _lastpos-->Node will be added at last pos outside the node
end
-- Movement function of egg
local egg_on_step = function(self, dtime)
self.timer=self.timer+dtime
local pos = self.object:get_pos()
local node = minetest.get_node(pos)
local def = minetest.registered_nodes[node.name]
-- Destroy when hitting a solid node with chance to spawn chicks
if self._lastpos.x~=nil then
if (def and def.walkable) or not def then
-- 1/8 chance to spawn a chick
-- FIXME: Chicks have a quite good chance to spawn in walls
local r = math.random(1,8)
-- Turn given object into a child
local make_child= function(object)
local ent = object:get_luaentity()
object:set_properties({
visual_size = { x = ent.base_size.x/2, y = ent.base_size.y/2 },
collisionbox = {
ent.base_colbox[1]/2,
ent.base_colbox[2]/2,
ent.base_colbox[3]/2,
ent.base_colbox[4]/2,
ent.base_colbox[5]/2,
ent.base_colbox[6]/2,
}
})
ent.child = true
end
if r == 1 then
make_child(minetest.add_entity(self._lastpos, "mobs_mc:chicken"))
-- BONUS ROUND: 1/32 chance to spawn 3 additional chicks
local r = math.random(1,32)
if r == 1 then
local offsets = {
{ x=0.7, y=0, z=0 },
{ x=-0.7, y=0, z=-0.7 },
{ x=-0.7, y=0, z=0.7 },
}
for o=1, 3 do
local pos = vector.add(self._lastpos, offsets[o])
make_child(minetest.add_entity(pos, "mobs_mc:chicken"))
end
end
end
minetest.sound_play("mcl_throwing_egg_impact", { pos = self.object:get_pos(), max_hear_distance=10, gain=0.5 }, true)
self.object:remove()
return
end
end
-- Destroy when hitting a mob or player (no chick spawning)
if check_object_hit(self, pos) then
minetest.sound_play("mcl_throwing_egg_impact", { pos = self.object:get_pos(), max_hear_distance=10, gain=0.5 }, true)
self.object:remove()
return
end
self._lastpos={x=pos.x, y=pos.y, z=pos.z} -- Set lastpos-->Node will be added at last pos outside the node
end
-- Movement function of ender pearl
local pearl_on_step = function(self, dtime)
self.timer=self.timer+dtime
local pos = self.object:get_pos()
pos.y = math.floor(pos.y)
local node = minetest.get_node(pos)
local nn = node.name
local def = minetest.registered_nodes[node.name]
-- Destroy when hitting a solid node
if self._lastpos.x~=nil then
local walkable = (def and def.walkable)
-- No teleport for hitting ignore for now. Otherwise the player could get stuck.
-- FIXME: This also means the player loses an ender pearl for throwing into unloaded areas
if node.name == "ignore" then
self.object:remove()
-- Activate when hitting a solid node or a plant
elseif walkable or nn == "mcl_core:vine" or nn == "mcl_core:deadbush" or minetest.get_item_group(nn, "flower") ~= 0 or minetest.get_item_group(nn, "sapling") ~= 0 or minetest.get_item_group(nn, "plant") ~= 0 or minetest.get_item_group(nn, "mushroom") ~= 0 or not def then
local player = minetest.get_player_by_name(self._thrower)
if player then
-- Teleport and hurt player
-- First determine good teleport position
local dir = {x=0, y=0, z=0}
local v = self.object:get_velocity()
if walkable then
local vc = table.copy(v) -- vector for calculating
-- Node is walkable, we have to find a place somewhere outside of that node
vc = vector.normalize(vc)
-- Zero-out the two axes with a lower absolute value than
-- the axis with the strongest force
local lv, ld
lv, ld = math.abs(vc.y), "y"
if math.abs(vc.x) > lv then
lv, ld = math.abs(vc.x), "x"
end
if math.abs(vc.z) > lv then
lv, ld = math.abs(vc.z), "z"
end
if ld ~= "x" then vc.x = 0 end
if ld ~= "y" then vc.y = 0 end
if ld ~= "z" then vc.z = 0 end
-- Final tweaks to the teleporting pos, based on direction
-- Impact from the side
dir.x = vc.x * -1
dir.z = vc.z * -1
-- Special case: top or bottom of node
if vc.y > 0 then
-- We need more space when impact is from below
dir.y = -2.3
elseif vc.y < 0 then
-- Standing on top
dir.y = 0.5
end
end
-- If node was not walkable, no modification to pos is made.
-- Final teleportation position
local telepos = vector.add(pos, dir)
local telenode = minetest.get_node(telepos)
--[[ It may be possible that telepos is walkable due to the algorithm.
Especially when the ender pearl is faster horizontally than vertical.
This applies final fixing, just to be sure we're not in a walkable node ]]
if not minetest.registered_nodes[telenode.name] or minetest.registered_nodes[telenode.name].walkable then
if v.y < 0 then
telepos.y = telepos.y + 0.5
else
telepos.y = telepos.y - 2.3
end
end
local oldpos = player:get_pos()
-- Teleport and hurt player
player:set_pos(telepos)
player:set_hp(player:get_hp() - 5, { type = "fall", from = "mod" })
-- 5% chance to spawn endermite at the player's origin
local r = math.random(1,20)
if r == 1 then
minetest.add_entity(oldpos, "mobs_mc:endermite")
end
end
self.object:remove()
return
end
end
self._lastpos={x=pos.x, y=pos.y, z=pos.z} -- Set lastpos-->Node will be added at last pos outside the node
end
snowball_ENTITY.on_step = snowball_on_step
egg_ENTITY.on_step = egg_on_step
pearl_ENTITY.on_step = pearl_on_step
minetest.register_entity("mcl_throwing:snowball_entity", snowball_ENTITY)
minetest.register_entity("mcl_throwing:egg_entity", egg_ENTITY)
minetest.register_entity("mcl_throwing:ender_pearl_entity", pearl_ENTITY)
local how_to_throw = S("Use the punch key to throw.")
-- Snowball
minetest.register_craftitem("mcl_throwing:snowball", {
description = S("Snowball"),
_tt_help = S("Throwable"),
_doc_items_longdesc = S("Snowballs can be thrown or launched from a dispenser for fun. Hitting something with a snowball does nothing."),
_doc_items_usagehelp = how_to_throw,
inventory_image = "mcl_throwing_snowball.png",
stack_max = 16,
groups = { weapon_ranged = 1 },
on_use = mcl_throwing.get_player_throw_function("mcl_throwing:snowball_entity"),
_on_dispense = mcl_throwing.dispense_function,
})
-- Egg
minetest.register_craftitem("mcl_throwing:egg", {
description = S("Egg"),
_tt_help = S("Throwable").."\n"..S("Chance to hatch chicks when broken"),
_doc_items_longdesc = S("Eggs can be thrown or launched from a dispenser and breaks on impact. There is a small chance that 1 or even 4 chicks will pop out of the egg."),
_doc_items_usagehelp = how_to_throw,
inventory_image = "mcl_throwing_egg.png",
stack_max = 16,
on_use = mcl_throwing.get_player_throw_function("mcl_throwing:egg_entity"),
_on_dispense = mcl_throwing.dispense_function,
groups = { craftitem = 1 },
})
-- Ender Pearl
minetest.register_craftitem("mcl_throwing:ender_pearl", {
description = S("Ender Pearl"),
_tt_help = S("Throwable").."\n"..minetest.colorize(mcl_colors.YELLOW, S("Teleports you on impact for cost of 5 HP")),
_doc_items_longdesc = S("An ender pearl is an item which can be used for teleportation at the cost of health. It can be thrown and teleport the thrower to its impact location when it hits a solid block or a plant. Each teleportation hurts the user by 5 hit points."),
_doc_items_usagehelp = how_to_throw,
wield_image = "mcl_throwing_ender_pearl.png",
inventory_image = "mcl_throwing_ender_pearl.png",
stack_max = 16,
on_use = mcl_throwing.get_player_throw_function("mcl_throwing:ender_pearl_entity"),
groups = { transport = 1 },
})
mcl_throwing.register_throwable_object("mcl_throwing:snowball", "mcl_throwing:snowball_entity", 22)
mcl_throwing.register_throwable_object("mcl_throwing:egg", "mcl_throwing:egg_entity", 22)
mcl_throwing.register_throwable_object("mcl_throwing:ender_pearl", "mcl_throwing:ender_pearl_entity", 22)