MineClone2/mods/ITEMS/mcl_throwing/bow.lua

266 lines
8.7 KiB
Lua

mcl_throwing = {}
local arrows = {
["mcl_throwing:arrow"] = "mcl_throwing:arrow_entity",
}
local GRAVITY = 9.81
local BOW_DURABILITY = 385
-- Charging time in microseconds
local BOW_CHARGE_TIME_HALF = 500000 -- bow level 1
local BOW_CHARGE_TIME_FULL = 1000000 -- bow level 2 (full charge)
-- TODO: Use Minecraft speed (ca. 53 m/s)
-- Currently nerfed because at full speed the arrow would easily get out of the range of the loaded map.
local BOW_MAX_SPEED = 26
--[[ Store the charging state of each player.
keys: player name
value:
false or nil = not charging or player not existing
number: currently charging, the number is the time from minetest.get_us_time
in which the charging has started
]]
local bow_load = {}
mcl_throwing.shoot_arrow = function(arrow_item, pos, dir, yaw, shooter, power, damage)
local obj = minetest.add_entity({x=pos.x,y=pos.y,z=pos.z}, arrows[arrow_item])
if power == nil then
power = 19
end
if damage == nil then
damage = 3
end
obj:setvelocity({x=dir.x*power, y=dir.y*power, z=dir.z*power})
obj:setacceleration({x=dir.x*-3, y=-GRAVITY, z=dir.z*-3})
obj:setyaw(yaw-math.pi/2)
local le = obj:get_luaentity()
le._shooter = shooter
le._damage = damage
le._startpos = pos
minetest.sound_play("mcl_throwing_bow_shoot", {pos=pos})
if shooter ~= nil then
if obj:get_luaentity().player == "" then
obj:get_luaentity().player = shooter
end
obj:get_luaentity().node = shooter:get_inventory():get_stack("main", 1):get_name()
end
return obj
end
local get_arrow = function(player)
local inv = player:get_inventory()
local arrow_stack, arrow_stack_id
for i=1, inv:get_size("main") do
local it = inv:get_stack("main", i)
if not it:is_empty() and minetest.get_item_group(it:get_name(), "ammo_bow") ~= 0 then
arrow_stack = it
arrow_stack_id = i
break
end
end
return arrow_stack, arrow_stack_id
end
local player_shoot_arrow = function(itemstack, player, power, damage)
local arrow_stack, arrow_stack_id = get_arrow(player)
local arrow_itemstring
if not minetest.settings:get_bool("creative_mode") then
if not arrow_stack then
return false
end
arrow_itemstring = arrow_stack:get_name()
arrow_stack:take_item()
local inv = player:get_inventory()
inv:set_stack("main", arrow_stack_id, arrow_stack)
end
local playerpos = player:getpos()
local dir = player:get_look_dir()
local yaw = player:get_look_horizontal()
if not arrow_itemstring then
arrow_itemstring = "mcl_throwing:arrow"
end
mcl_throwing.shoot_arrow(arrow_itemstring, {x=playerpos.x,y=playerpos.y+1.5,z=playerpos.z}, dir, yaw, player, power, damage)
return true
end
minetest.register_tool("mcl_throwing:bow", {
description = "Bow",
_doc_items_longdesc = [[Bows are ranged weapons to shoot arrows at your foes.
The speed and damage of the arrow increases the longer you charge. The regular damage of the arrow is between 1 and 9. At full charge, there's also a 20% of a critical hit, dealing 10 damage instead.]],
_doc_items_usagehelp = [[To use the bow, you first need to have at least one arrow anywhere in your inventory (unless in Creative Mode). Hold down the right mouse button to charge, release to shoot.]],
_doc_items_durability = BOW_DURABILITY,
inventory_image = "mcl_throwing_bow.png",
stack_max = 1,
-- Trick to disable melee damage to entities.
-- Range not set to 0 (unlike the others) so it can be placed into item frames
range = 1,
-- Trick to disable digging as well
on_use = function() end,
groups = {weapon=1,weapon_ranged=1},
})
minetest.register_tool("mcl_throwing:bow_0", {
description = "Bow",
_doc_items_create_entry = false,
inventory_image = "mcl_throwing_bow_0.png",
stack_max = 1,
range = 0, -- Pointing range to 0 to prevent punching with bow :D
groups = {not_in_creative_inventory=1, not_in_craft_guide=1},
})
minetest.register_tool("mcl_throwing:bow_1", {
description = "Bow",
_doc_items_create_entry = false,
inventory_image = "mcl_throwing_bow_1.png",
stack_max = 1,
range = 0,
groups = {not_in_creative_inventory=1, not_in_craft_guide=1},
})
minetest.register_tool("mcl_throwing:bow_2", {
description = "Bow",
_doc_items_create_entry = false,
inventory_image = "mcl_throwing_bow_2.png",
stack_max = 1,
range = 0,
groups = {not_in_creative_inventory=1, not_in_craft_guide=1},
})
controls.register_on_release(function(player, key, time)
if key~="RMB" then return end
local inv = minetest.get_inventory({type="player", name=player:get_player_name()})
local wielditem = player:get_wielded_item()
if (wielditem:get_name()=="mcl_throwing:bow_0" or wielditem:get_name()=="mcl_throwing:bow_1" or wielditem:get_name()=="mcl_throwing:bow_2") then
local has_shot = false
local speed, damage
local p_load = bow_load[player:get_player_name()]
local charge
-- Type sanity check
if type(p_load) == "number" then
charge = minetest.get_us_time() - p_load
else
-- In case something goes wrong ...
-- Just assume minimum charge.
charge = 0
minetest.log("warning", "[mcl_throwing] Player "..player:get_player_name().." fires arrow with non-numeric bow_load!")
end
charge = math.max(math.min(charge, BOW_CHARGE_TIME_FULL), 0)
local charge_ratio = charge / BOW_CHARGE_TIME_FULL
charge_ratio = math.max(math.min(charge_ratio, 1), 0)
-- Calculate damage and speed
-- Fully charged
if charge >= BOW_CHARGE_TIME_FULL then
speed = BOW_MAX_SPEED
local r = math.random(1,5)
if r == 1 then
-- 20% chance for critical hit
damage = 10
else
damage = 9
end
-- Partially charged
else
-- Linear speed and damage increase
speed = math.max(4, BOW_MAX_SPEED * charge_ratio)
damage = math.max(1, math.floor(9 * charge_ratio))
end
has_shot = player_shoot_arrow(wielditem, player, speed, damage)
wielditem:set_name("mcl_throwing:bow")
if has_shot and minetest.settings:get_bool("creative_mode") == false then
wielditem:add_wear(65535/BOW_DURABILITY)
end
player:set_wielded_item(wielditem)
bow_load[player:get_player_name()] = false
end
end)
controls.register_on_hold(function(player, key, time)
if key ~= "RMB" then
return
end
local name = player:get_player_name()
local inv = minetest.get_inventory({type="player", name=name})
local wielditem = player:get_wielded_item()
if wielditem:get_name()=="mcl_throwing:bow" and (minetest.settings:get_bool("creative_mode") or inv:contains_item("main", "mcl_throwing:arrow")) then
wielditem:set_name("mcl_throwing:bow_0")
bow_load[name] = minetest.get_us_time()
else
if type(bow_load[name]) == "number" then
if wielditem:get_name() == "mcl_throwing:bow_0" and minetest.get_us_time() - bow_load[name] >= BOW_CHARGE_TIME_HALF then
wielditem:set_name("mcl_throwing:bow_1")
elseif wielditem:get_name() == "mcl_throwing:bow_1" and minetest.get_us_time() - bow_load[name] >= BOW_CHARGE_TIME_FULL then
wielditem:set_name("mcl_throwing:bow_2")
end
else
wielditem:set_name("mcl_throwing:bow")
end
end
player:set_wielded_item(wielditem)
end)
minetest.register_globalstep(function(dtime)
for _, player in pairs(minetest.get_connected_players()) do
local wielditem = player:get_wielded_item()
local controls = player:get_player_control()
local inv = minetest.get_inventory({type="player", name = player:get_player_name()})
if bow_load[player:get_player_name()] and (wielditem:get_name()~="mcl_throwing:bow_0" and wielditem:get_name()~="mcl_throwing:bow_1" and wielditem:get_name()~="mcl_throwing:bow_2") then
local list = inv:get_list("main")
for place, stack in pairs(list) do
if stack:get_name()=="mcl_throwing:bow_0" or stack:get_name()=="mcl_throwing:bow_1" or stack:get_name()=="mcl_throwing:bow_2" then
stack:set_name("mcl_throwing:bow")
list[place] = stack
break
end
end
inv:set_list("main", list)
bow_load[player:get_player_name()] = false
end
end
end)
minetest.register_on_leaveplayer(function(player)
bow_load[player:get_player_name()] = nil
end)
if minetest.get_modpath("mcl_core") and minetest.get_modpath("mcl_mobitems") then
minetest.register_craft({
output = 'mcl_throwing:bow',
recipe = {
{'', 'mcl_core:stick', 'mcl_mobitems:string'},
{'mcl_core:stick', '', 'mcl_mobitems:string'},
{'', 'mcl_core:stick', 'mcl_mobitems:string'},
}
})
minetest.register_craft({
output = 'mcl_throwing:bow',
recipe = {
{'mcl_mobitems:string', 'mcl_core:stick', ''},
{'mcl_mobitems:string', '', 'mcl_core:stick'},
{'mcl_mobitems:string', 'mcl_core:stick', ''},
}
})
end
minetest.register_craft({
type = "fuel",
recipe = "mcl_throwing:bow",
burntime = 15,
})
-- Add entry aliases for the Help
if minetest.get_modpath("doc") then
doc.add_entry_alias("tools", "mcl_throwing:bow", "tools", "mcl_throwing:bow_0")
doc.add_entry_alias("tools", "mcl_throwing:bow", "tools", "mcl_throwing:bow_1")
doc.add_entry_alias("tools", "mcl_throwing:bow", "tools", "mcl_throwing:bow_2")
end