VoxeLibre/mods/ITEMS/mcl_throwing/register.lua

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local S = minetest.get_translator(minetest.get_current_modname())
local math = math
local vector = vector
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local mod_target = minetest.get_modpath("mcl_target")
-- The snowball entity
local function snowball_particles(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
minetest.register_entity("mcl_throwing: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,
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get_staticdata = mcl_throwing.get_staticdata,
on_activate = mcl_throwing.on_activate,
_thrower = nil,
_lastpos = nil,
_vl_projectile = {
behaviors = {
vl_projectile.collides_with_solids,
vl_projectile.collides_with_entities,
},
on_collide_with_solid = function(self, pos, node)
if mod_target and node.name == "mcl_target:target_off" then
mcl_target.hit(vector.round(pos), 0.4) --4 redstone ticks
end
snowball_particles(self._last_pos or pos, self.object:get_velocity())
end,
on_collide_with_entity = function(self, pos, entity)
snowball_particles(self._last_pos or pos, self.object:get_velocity())
end,
sounds = {
on_solid_collision = {"mcl_throwing_snowball_impact_hard", { max_hear_distance=16, gain=0.7 }, true},
on_entity_collision = {"mcl_throwing_snowball_impact_soft", { max_hear_distance=16, gain=0.7 }, true}
},
damage_groups = { snowball_vulnerable = 3 },
},
on_step = vl_projectile.update_projectile,
})
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,
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get_staticdata = mcl_throwing.get_staticdata,
on_activate = mcl_throwing.on_activate,
_thrower = nil,
_lastpos={},
}
-- Ender pearl entity
minetest.register_entity("mcl_throwing:ender_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,
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get_staticdata = mcl_throwing.get_staticdata,
on_activate = mcl_throwing.on_activate,
_lastpos={},
_thrower = nil, -- Player ObjectRef of the player who threw the ender pearl
_vl_projectile = {
behaviors = {
vl_projectile.collides_with_solids,
},
collides_with = {
"mcl_core:vine", "mcl_core:deadbush",
"group:flower", "group:sapling",
"group:plant", "group:mushroom",
},
on_collide_with_solid = function(self, pos, node)
if mod_target and node.name == "mcl_target:target_off" then
mcl_target.hit(vector.round(pos), 0.4) --4 redstone ticks
end
if node.name == "ignore" then
-- FIXME: This also means the player loses an ender pearl for throwing into unloaded areas
return
end
-- Make sure we have a reference to the player
local player = self._thrower and minetest.get_player_by_name(self._thrower)
if not player then return end
-- Teleport and hurt player
-- First determine good teleport position
local dir = {x=0, y=0, z=0}
local v = self.object:get_velocity()
if node_def and node_def.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
ld = "z" --math.abs(vc.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
},
on_step = vl_projectile.update_projectile,
})
local function check_object_hit(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
self.object:remove()
return true
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elseif (entity.is_mob == true or entity._hittable_by_projectile) and (self._thrower ~= object) then
object:punch(self.object, 1.0, {
full_punch_interval = 1.0,
damage_groups = dmg,
}, nil)
return true
end
end
end
return false
end
-- Movement function of egg
local function egg_on_step(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 or entity, with chance to spawn chicks
if (def and def.walkable) or not def or check_object_hit(self, pos, 0) then
-- If egg has just been thrown, use current position
if not self._lastpos.x then
self._lastpos = pos
end
-- 1/8 chance to spawn a chick
-- FIXME: Chicks have a quite good chance to spawn in walls
if math.random(1,8) == 1 then
mcl_mobs.spawn_child(self._lastpos, "mobs_mc:chicken")
-- BONUS ROUND: 1/32 chance to spawn 3 additional chicks
if math.random(1,32) == 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])
mcl_mobs.spawn_child(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()
if mod_target and node.name == "mcl_target:target_off" then
mcl_target.hit(vector.round(pos), 0.4) --4 redstone ticks
end
return
end
self._lastpos = pos -- Set lastpos-->Node will be added at last pos outside the node
end
egg_ENTITY.on_step = egg_on_step
minetest.register_entity("mcl_throwing:egg_entity", egg_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 = 64,
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 = 64,
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"),
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_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)