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Delete 'mods/gunkit/api.lua'

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thunderdog1138 2020-11-17 21:45:40 +00:00
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mods/gunkit/api.lua
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@ -1,518 +0,0 @@
gunkit = {}
gunkit.firing = {}
gunkit.timer = {}
--Interval for gun-cooldown checks
gunkit.count_interval = 0.1
--
-- Initate some helper functions
--
function get_random_float(lower, upper)
return lower + math.random() * (upper - lower)
end
function get_table_size(tbl)
local count = 0
for k, v in pairs(tbl) do
count = count + 1
end
return count
end
--
-- Lets define some functions to register guns/mags
--
function gunkit.register_firearm(name, def)
--Check if mag_type and bullet textures are specified
if not def.mag_type or not def.fire.bullet_texture or def.alt_fire
and not def.alt_fire.bullet_texture then return end
--Define some default values
local fire = {
range = 60,
speed = 300,
spread = 1,
dmg = 7,
shots = 1,
interval = 0.15,
zoom = 2,
zoom_time = 2,
}
--Use defaults for any value not set if def.fire is present
if def.fire then
for k, value in pairs(def.fire) do
fire[k] = value
end
end
--Get callbacks table
local calls = def.callbacks
--Fancy item descrips
local descrip = {
def.description,
minetest.colorize("#dbc217", "Mag type: " .. def.mag_type),
}
minetest.register_tool(name, {
description = table.concat(descrip, "\n"),
inventory_image = def.inventory_image,
wield_scale = def.wield_scale or nil,
--[[We set range to 0 so that the gun cant interact with
nodes when a user tries to ADS (Aim Down Sights)]]
range = 0,
--Fields defined by the api
fire = fire,
alt_fire = def.alt_fire or nil,
mag_type = def.mag_type,
sounds = def.sounds or nil,
callbacks = calls or nil,
on_use = function(itemstack, user, pointed_thing)
--Get the guns meta
local meta = itemstack:get_meta()
--Get the itemdef of the wielded firearm
local gun = minetest.registered_items[name]
--Set the guns fire mode if not already done
if not meta:contains("mode") then
meta:set_string("mode", "fire")
end
--Check if gun is loaded
if not meta:contains("mag") and (not calls or not calls.on_load_mag
or calls.on_load_mag({user = user, itemstack = itemstack})) then
--[[Search through the players inv looking for the mag with the most ammo,
mag must have > 0 bullets]]
local upper, upper_bullets, index
for idx, stack in ipairs(user:get_inventory():get_list("main")) do
--Get stack meta
local stack_meta = stack:get_meta()
--Check if stack exists and if it 'contains bullets'
if not stack:is_empty() and stack_meta:contains("bullets") then
--Get meta field and itemdef
local bullets = stack_meta:get_int("bullets")
local itemdef = minetest.registered_items[stack:get_name()]
if bullets > 0 and itemdef.mag_type == gun.mag_type
and (not upper or bullets > upper_bullets) then
upper, upper_bullets, index = stack, bullets, idx
end
end
end
--Load the mag
if upper and upper_bullets and index then
if gun.sounds and gun.sounds.mag_load then
minetest.sound_play(gun.sounds.mag_load, {object = user})
end
meta:set_string("mag", upper:get_name() .. "," .. upper_bullets)
itemstack:set_wear(upper:get_wear())
user:get_inventory():set_stack("main", index, nil)
end
return itemstack
--Fire the gun
else
local temp = itemstack:get_meta():get_string("mag"):split(",")
local mag, ammo = temp[1], tonumber(temp[2])
if ammo > 0 then
if not gunkit.firing[user] then
--Add to firing queue
gunkit.firing[user] = {
stack = itemstack,
wield_index = user:get_wield_index(),
mag = {name = mag, ammo = ammo}
}
end
elseif gun.sounds and gun.sounds.fire_empty then
minetest.sound_play(gun.sounds.fire_empty, {object = user})
end
end
end,
on_secondary_use = function(itemstack, user, pointed_thing)
--Get the guns meta
local meta = itemstack:get_meta()
--Set the guns fire mode if not already done
if not meta:contains("mode") then
meta:set_string("mode", "fire")
end
--Check if gun is loaded
if meta:contains("mag") then
local temp = meta:get_string("mag"):split(",")
local mag, ammo = temp[1], tonumber(temp[2])
if ammo > 0 and not gunkit.firing[user] then
--Get mode def
local mode_def = minetest.registered_items[itemstack:get_name()][meta:get_string("mode")]
if user:get_fov() == 0 and mode_def.zoom and mode_def.zoom_time then
user:set_fov(1 / mode_def.zoom, true, mode_def.zoom_time)
end
--Add to firing queue
gunkit.firing[user] = {
stack = itemstack,
wield_index = user:get_wield_index(),
mag = {name = mag, ammo = ammo}
}
end
end
end,
on_drop = function(itemstack, dropper, pos)
local meta = itemstack:get_meta()
local wield = dropper:get_wield_index()
local inv = dropper:get_inventory()
local gun = minetest.registered_items[itemstack:get_name()]
--Check if gun is loaded
if meta:contains("mag") then
local temp = meta:get_string("mag"):split(",")
local mag, ammo = temp[1], tonumber(temp[2])
--Check if mag is empty
if ammo == 0 and (not calls or not calls.on_drop_mag
or calls.on_drop_mag({user = dropper, itemstack = itemstack})) then
if gun.sounds and gun.sounds.mag_drop then
minetest.sound_play(gun.sounds.mag_drop, {object = dropper})
end
local stack = ItemStack(mag)
stack:set_wear(65534)
if inv:room_for_item("main", stack) then
inv:add_item("main", stack)
else
minetest.item_drop(stack, dropper, pos)
end
itemstack:set_wear(0)
meta:set_string("mag", "")
--If not then swap fire mode
elseif meta:contains("mode") then
meta:set_string("mode", gunkit.swap_mode(dropper, gun, meta:get_string("mode")))
end
--Otherwise drop gun
else
minetest.item_drop(itemstack, dropper, pos)
end
inv:set_stack("main", wield, itemstack)
end,
})
end
function gunkit.register_mag(name, def)
--Fancy item descrips
local descrip = {
def.description,
minetest.colorize("#dbc217", "Mag type: " .. def.mag_type),
minetest.colorize("#40c3cb", "Ammo: " .. def.ammo),
}
minetest.register_tool(name, {
description = table.concat(descrip, "\n"),
inventory_image = def.inventory_image,
--Fields defined by the api
mag_type = def.mag_type,
ammo = def.ammo,
max_ammo = def.max_ammo,
})
minetest.register_craft({
type = "shapeless",
output = name,
recipe = {name, def.ammo},
})
minetest.register_craft({
type = "shapeless",
output = name .. " 1 65534",
recipe = {name},
})
minetest.register_on_craft(function(itemstack, player, old_craft_grid, craft_inv)
local mag, ammo, meta, count
--Check for corresponding mag and ammo
for idx, stack in pairs(old_craft_grid) do
--Get stack name
local stack_name = stack:get_name()
if mag and ammo then
break
elseif not mag and stack_name == name then
mag = stack
meta = mag:get_meta()
count = meta:get_int("bullets")
elseif not ammo and stack_name == def.ammo then
ammo = stack
end
end
--Empty mag
if mag and not ammo then
meta:set_int("bullets", 0)
craft_inv:add_item("craft", {name = def.ammo, count = count})
--Fill empty mag
elseif mag and ammo then
local bullets = ammo:get_count()
local needs = def.max_ammo - count
if needs == 0 then
craft_inv:add_item("craft", {name = def.ammo})
itemstack:get_meta():set_int("bullets", count)
return
else
local use
if needs > bullets then
use = bullets
else
use = needs
end
craft_inv:remove_item("craft", {name = def.ammo, count = use})
itemstack:get_meta():set_int("bullets", count + use)
itemstack:set_wear(65534 - (65534 / def.max_ammo * (count + use - 1)))
end
end
return itemstack
end)
end
--
-- Create some internal functions that we will call later
--
--This should be pretty obvious
function gunkit.swap_mode(user, def, mode)
local modes = {fire = "alt_fire", alt_fire = "fire"}
--Get alternate mode
local alt_mode = modes[mode]
--Check for alternate mode
if def[alt_mode] then
local sounds = def[mode].sounds
if sounds.fire_toggle then
minetest.sound_play(sounds.fire_toggle, {object = user})
end
return alt_mode
else
return mode
end
end
--[[get the end of a vector calculated from user pos, look dir, and item range.
best not to touch the math here, im not completely sure how it works either]]
function gunkit.get_vector(user, p_pos, def)
--Add eyeheight offset
p_pos.y = p_pos.y + user:get_properties().eye_height or 1.625
local cam = {
x = minetest.yaw_to_dir(user:get_look_horizontal()),
z = user:get_look_dir()
}
local dir = vector.multiply(minetest.yaw_to_dir(math.rad(1)), def.range)
local e_pos = vector.add(p_pos, vector.multiply(cam.z, dir.z))
e_pos = vector.add(e_pos, vector.multiply(cam.x, dir.x))
return p_pos, e_pos
end
--Handle weapon firing
function gunkit.fire(user, stack, mag, p_pos, e_pos)
local mode = stack:get_meta():get_string("mode")
local def = minetest.registered_items[stack:get_name()]
local mode_def = def[mode]
local shots = mode_def.shots
if shots > mag.ammo then
shots = mag.ammo
end
mag.ammo = math.max(0, mag.ammo - shots)
stack:set_wear(65534 - (65534 / minetest.registered_items[mag.name].max_ammo * mag.ammo))
--Get mode_def sounds table
local sounds = mode_def.sounds
--Check if table exists
if sounds then
if sounds.fire then
minetest.sound_play(sounds.fire, {pos = p_pos})
end
if sounds.shell_drop then
minetest.sound_play(sounds.shell_drop, {pos = p_pos})
end
end
for i = 1, shots do
--3d bullet spread (in degrees)
e_pos = vector.apply(e_pos, function(n)
return n + math.rad(get_random_float(-mode_def.spread, mode_def.spread)) * mode_def.range
end)
minetest.add_particle({
pos = p_pos,
velocity = vector.multiply(vector.direction(p_pos, e_pos), 80),
expirationtime = 3,
collisiondetection = true,
collision_removal = true,
size = 2,
texture = mode_def.bullet_texture,
})
for pointed_thing in minetest.raycast(p_pos, e_pos, true, false) do
if pointed_thing.type == "node" then
break
elseif pointed_thing.type == "object" and pointed_thing.ref ~= user then
local luaent = pointed_thing.ref:get_luaentity()
if not luaent or not luaent.name:find("builtin") then
local calls = def.callbacks
if not calls or not calls[mode] or not calls[mode].on_hit
or calls[mode].on_hit({itemstack = stack, user = user, obj = pointed_thing.ref}) then
pointed_thing.ref:punch(user, 1.0, {full_punch_interval = 1.0, damage_groups = {fleshy = mode_def.dmg}})
break
end
end
end
end
end
return mag
end
--
-- Globalstep to keep track of firing players and weapon cooldowns
--
local counter = 0
minetest.register_globalstep(
function(dtime)
local current = minetest.get_us_time() / 1000000
counter = counter + dtime
if counter > gunkit.count_interval then
--Check users gun cooldowns
for user, items in pairs(gunkit.timer) do
for item, modes in pairs(items) do
for mode, time in pairs(modes) do
if current - time > minetest.registered_items[item][mode].interval then
gunkit.timer[user][item][mode] = nil
end
end
if get_table_size(modes) == 0 then
gunkit.timer[user][item] = nil
end
end
if get_table_size(items) == 0 then
gunkit.timer[user] = nil
end
end
counter = 0
end
--Loop through currently firing users
for user, tbl in pairs(gunkit.firing) do
local def = minetest.registered_items[user:get_wielded_item():get_name()]
if def.name == tbl.stack:get_name() and user:get_wield_index() == tbl.wield_index then
local name = def.name
local meta = tbl.stack:get_meta()
local mode = meta:get_string("mode")
local mode_def = def[mode]
local keys = user:get_player_control()
if keys.LMB then
local timer = gunkit.timer[user]
local calls = def.callbacks
if (not timer or not timer[name] or not timer[name][mode] or current - timer[name][mode] > mode_def.interval)
and (not calls or not calls[mode] or not calls[mode].on_fire or calls[mode].on_fire({itemstack = tbl.stack, user = user})) then
if meta:contains("mag") and tbl.mag.ammo > 0 then
local p_pos, e_pos = gunkit.get_vector(user, user:get_pos(), mode_def)
minetest.after(mode_def.range / mode_def.speed, gunkit.fire, user, tbl.stack, tbl.mag, p_pos, e_pos)
gunkit.timer[user] = gunkit.timer[user] or {}
gunkit.timer[user][name] = gunkit.timer[user][name] or {}
gunkit.timer[user][name][mode] = current
end
end
end
local fov = user:get_fov()
local zoom = mode_def.zoom
local zoom_time = mode_def.zoom_time
if zoom and zoom_time then
if not keys.RMB and fov ~= 0 then
user:set_fov(0, true, zoom_time)
elseif keys.RMB and fov == 0 then
user:set_fov(1 / zoom, true, zoom_time)
end
end
if not keys.LMB and not keys.RMB then
gunkit.firing[user] = nil
meta:set_string("mag", tbl.mag.name .. "," .. tbl.mag.ammo)
user:set_wielded_item(tbl.stack)
end
else
gunkit.firing[user] = nil
tbl.stack:get_meta():set_string("mag", tbl.mag.name .. "," .. tbl.mag.ammo)
user:get_inventory():set_stack("main", tbl.wield_index, tbl.stack)
user:set_fov(0)
end
end
end
)