MineClonXX/mods/ITEMS/mcl_shields/init.lua

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local minetest, math, vector = minetest, math, vector
local modname = minetest.get_current_modname()
local S = minetest.get_translator(modname)
mcl_shields = {
types = {
mob = true,
player = true,
arrow = true,
generic = true,
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explosion = true,
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dragon_breath = true,
},
enchantments = {"mending", "unbreaking"},
players = {},
}
local interact_priv = minetest.registered_privileges.interact
interact_priv.give_to_singleplayer = false
interact_priv.give_to_admin = false
local overlay = mcl_enchanting.overlay
local hud = "mcl_shield_hud.png"
minetest.register_tool("mcl_shields:shield", {
description = S("Shield"),
_doc_items_longdesc = S("A shield is a tool used for protecting the player against attacks."),
inventory_image = "mcl_shield.png",
stack_max = 1,
groups = {
shield = 1,
weapon = 1,
enchantability = -1,
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offhand_item = 1,
},
sound = {breaks = "default_tool_breaks"},
_repair_material = "group:wood",
wield_scale = vector.new(2, 2, 2),
_mcl_wieldview_item = "",
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})
local function wielded_item(obj, i)
local itemstack = obj:get_wielded_item()
if i == 1 then
itemstack = obj:get_inventory():get_stack("offhand", 1)
end
return itemstack:get_name()
end
function mcl_shields.wielding_shield(obj, i)
return wielded_item(obj, i):find("mcl_shields:shield")
end
local function shield_is_enchanted(obj, i)
return mcl_enchanting.is_enchanted(wielded_item(obj, i))
end
minetest.register_entity("mcl_shields:shield_entity", {
initial_properties = {
visual = "mesh",
mesh = "mcl_shield.obj",
physical = false,
pointable = false,
collide_with_objects = false,
textures = {"mcl_shield_base_nopattern.png"},
visual_size = vector.new(1, 1, 1),
},
_blocking = false,
_shield_number = 2,
_texture_copy = "",
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on_step = function(self, dtime, moveresult)
local player = self.object:get_attach()
if not player then
self.object:remove()
return
end
local shield_texture = "mcl_shield_base_nopattern.png"
local i = self._shield_number
local item = wielded_item(player, i)
if item ~= "mcl_shields:shield" and item ~= "mcl_shields:shield_enchanted" then
local itemstack = player:get_wielded_item()
if i == 1 then
itemstack = player:get_inventory():get_stack("offhand", 1)
end
local meta_texture = itemstack:get_meta():get_string("mcl_shields:shield_custom_pattern_texture")
if meta_texture ~= "" then
shield_texture = meta_texture
else
local color = minetest.registered_items[item]._shield_color
if color then
shield_texture = "mcl_shield_base_nopattern.png^(mcl_shield_pattern_base.png^[colorize:" .. color .. ")"
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end
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end
end
if shield_is_enchanted(player, i) then
shield_texture = shield_texture .. overlay
end
if self._texture_copy ~= shield_texture then
self.object:set_properties({textures = {shield_texture}})
end
self._texture_copy = shield_texture
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end,
})
for _, e in pairs(mcl_shields.enchantments) do
mcl_enchanting.enchantments[e].secondary.shield = true
end
function mcl_shields.is_blocking(obj)
if not obj:is_player() then return end
local blocking = mcl_shields.players[obj].blocking
if blocking <= 0 then
return
end
local shieldstack = obj:get_wielded_item()
if blocking == 1 then
shieldstack = obj:get_inventory():get_stack("offhand", 1)
end
return blocking, shieldstack
end
mcl_damage.register_modifier(function(obj, damage, reason)
local type = reason.type
local damager = reason.direct
local blocking, shieldstack = mcl_shields.is_blocking(obj)
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if not (obj:is_player() and blocking and mcl_shields.types[type] and damager) then
return
end
local entity = damager:get_luaentity()
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if entity and entity._shooter then
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damager = entity._shooter
end
local dpos = damager:get_pos()
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-- Used for removed / killed entities before the projectile hits the player
if entity and not entity._shooter and entity._saved_shooter_pos then
dpos = entity._saved_shooter_pos
end
if not dpos or vector.dot(obj:get_look_dir(), vector.subtract(dpos, obj:get_pos())) < 0 then
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return
end
local durability = 336
local unbreaking = mcl_enchanting.get_enchantment(shieldstack, mcl_shields.enchantments[2])
if unbreaking > 0 then
durability = durability * (unbreaking + 1)
end
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if not minetest.is_creative_enabled(obj:get_player_name()) and damage >= 3 then
shieldstack:add_wear(65535 / durability)
if blocking == 2 then
obj:set_wielded_item(shieldstack)
else
obj:get_inventory():set_stack("offhand", 1, shieldstack)
mcl_inventory.update_inventory_formspec(obj)
end
end
minetest.sound_play({name = "mcl_block"})
return 0
end)
local function modify_shield(player, vpos, vrot, i)
local arm = "Right"
if i == 1 then
arm = "Left"
end
local shield = mcl_shields.players[player].shields[i]
if shield then
shield:set_attach(player, "Arm_" .. arm, vpos, vrot, false)
end
end
local function set_shield(player, block, i)
if block then
if i == 1 then
modify_shield(player, vector.new(-9, 4, 0.5), vector.new(80, 100, 0), i) -- TODO
else
modify_shield(player, vector.new(-8, 4, -2.5), vector.new(80, 80, 0), i)
end
else
if i == 1 then
modify_shield(player, vector.new(-3, -5, 0), vector.new(0, 180, 0), i)
else
modify_shield(player, vector.new(3, -5, 0), vector.new(0, 0, 0), i)
end
end
local shield = mcl_shields.players[player].shields[i]
if not shield then return end
local luaentity = shield:get_luaentity()
if not luaentity then return end
luaentity._blocking = block
end
local function set_interact(player, interact)
local player_name = player:get_player_name()
local privs = minetest.get_player_privs(player_name)
if privs.interact == interact then
return
end
local meta = player:get_meta()
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if meta:get_int("mcl_privs:interact_revoked") ~= 1 then
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privs.interact = interact
minetest.set_player_privs(player_name, privs)
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meta:set_int("mcl_privs:interact_revoked",0)
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end
end
local shield_hud = {}
local function remove_shield_hud(player)
if not shield_hud[player] then return end --this function takes a long time. only run it when necessary
player:hud_remove(shield_hud[player])
shield_hud[player] = nil
set_shield(player, false, 1)
set_shield(player, false, 2)
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local hf = player:hud_get_flags()
if not hf.wielditem then
player:hud_set_flags({wielditem = true})
end
playerphysics.remove_physics_factor(player, "speed", "shield_speed")
set_interact(player, true)
end
local function add_shield_entity(player, i)
local shield = minetest.add_entity(player:get_pos(), "mcl_shields:shield_entity")
shield:get_luaentity()._shield_number = i
mcl_shields.players[player].shields[i] = shield
set_shield(player, false, i)
end
local function remove_shield_entity(player, i)
local shields = mcl_shields.players[player].shields
if shields[i] then
shields[i]:remove()
shields[i] = nil
end
end
local function handle_blocking(player)
local player_shield = mcl_shields.players[player]
local rmb = player:get_player_control().RMB
if not rmb then
player_shield.blocking = 0
return
end
local shield_in_offhand = mcl_shields.wielding_shield(player, 1)
local shield_in_hand = mcl_shields.wielding_shield(player)
local not_blocking = player_shield.blocking == 0
local pos = player:get_pos()
if shield_in_hand then
if not_blocking then
minetest.after(0.25, function()
if (not_blocking or not shield_in_offhand) and shield_in_hand and rmb then
player_shield.blocking = 2
set_shield(player, true, 2)
end
end)
elseif not shield_in_offhand then
player_shield.blocking = 2
end
elseif shield_in_offhand then
local pointed_thing = mcl_util.get_pointed_thing(player, true)
local offhand_can_block = (wielded_item(player) == "" or not pointed_thing)
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and (minetest.get_item_group(wielded_item(player), "bow") ~= 1 and minetest.get_item_group(wielded_item(player), "crossbow") ~= 1)
if pointed_thing and pointed_thing.type == "node" then
if minetest.get_item_group(minetest.get_node(pointed_thing.under).name, "container") > 1 then
return
end
end
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if not offhand_can_block then
return
end
if not_blocking then
minetest.after(0.25, function()
if (not_blocking or not shield_in_hand) and shield_in_offhand and rmb and offhand_can_block then
player_shield.blocking = 1
set_shield(player, true, 1)
end
end)
elseif not shield_in_hand then
player_shield.blocking = 1
end
else
player_shield.blocking = 0
end
end
local function update_shield_entity(player, blocking, i)
local shield = mcl_shields.players[player].shields[i]
if mcl_shields.wielding_shield(player, i) then
if not shield then
add_shield_entity(player, i)
else
if blocking == i then
if shield:get_luaentity() and not shield:get_luaentity()._blocking then
set_shield(player, true, i)
end
else
set_shield(player, false, i)
end
end
elseif shield then
remove_shield_entity(player, i)
end
end
local function add_shield_hud(shieldstack, player, blocking)
local texture = hud
if mcl_enchanting.is_enchanted(shieldstack:get_name()) then
texture = texture .. overlay
end
local offset = 100
if blocking == 1 then
texture = texture .. "^[transform4"
offset = -100
else
player:hud_set_flags({wielditem = false})
end
shield_hud[player] = player:hud_add({
hud_elem_type = "image",
position = {x = 0.5, y = 0.5},
scale = {x = -101, y = -101},
offset = {x = offset, y = 0},
text = texture,
z_index = -200,
})
playerphysics.add_physics_factor(player, "speed", "shield_speed", 0.5)
set_interact(player, nil)
end
local function update_shield_hud(player, blocking, shieldstack)
local shieldhud = shield_hud[player]
if not shieldhud then
add_shield_hud(shieldstack, player, blocking)
return
end
local wielditem = player:hud_get_flags().wielditem
if blocking == 1 then
if not wielditem then
player:hud_change(shieldhud, "text", hud .. "^[transform4")
player:hud_change(shieldhud, "offset", {x = -100, y = 0})
player:hud_set_flags({wielditem = true})
end
elseif wielditem then
player:hud_change(shieldhud, "text", hud)
player:hud_change(shieldhud, "offset", {x = 100, y = 0})
player:hud_set_flags({wielditem = false})
end
local image = player:hud_get(shieldhud).text
local enchanted = hud .. overlay
local enchanted1 = image == enchanted
local enchanted2 = image == enchanted .. "^[transform4"
if mcl_enchanting.is_enchanted(shieldstack:get_name()) then
if not enchanted1 and not enchanted2 then
if blocking == 1 then
player:hud_change(shieldhud, "text", hud .. overlay .. "^[transform4")
else
player:hud_change(shieldhud, "text", hud .. overlay)
end
end
elseif enchanted1 or enchanted2 then
if blocking == 1 then
player:hud_change(shieldhud, "text", hud .. "^[transform4")
else
player:hud_change(shieldhud, "text", hud)
end
end
end
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minetest.register_globalstep(function(dtime)
for _, player in pairs(minetest.get_connected_players()) do
handle_blocking(player)
local blocking, shieldstack = mcl_shields.is_blocking(player)
if blocking then
update_shield_hud(player, blocking, shieldstack)
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else
remove_shield_hud(player)
end
for i = 1, 2 do
update_shield_entity(player, blocking, i)
end
end
end)
minetest.register_on_dieplayer(function(player)
remove_shield_hud(player)
if not minetest.settings:get_bool("mcl_keepInventory") then
remove_shield_entity(player, 1)
remove_shield_entity(player, 2)
end
end)
minetest.register_on_leaveplayer(function(player)
shield_hud[player] = nil
mcl_shields.players[player] = nil
end)
minetest.register_craft({
output = "mcl_shields:shield",
recipe = {
{"group:wood", "mcl_core:iron_ingot", "group:wood"},
{"group:wood", "group:wood", "group:wood"},
{"", "group:wood", ""},
}
})
for _, colortab in pairs(mcl_banners.colors) do
local color = colortab[1]
minetest.register_tool("mcl_shields:shield_" .. color, {
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description = S(colortab[6] .. " Shield"),
_doc_items_longdesc = S("A shield is a tool used for protecting the player against attacks."),
inventory_image = "mcl_shield.png^(mcl_shield_item_overlay.png^[colorize:" .. colortab[4] ..")",
stack_max = 1,
groups = {
shield = 1,
weapon = 1,
enchantability = -1,
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not_in_creative_inventory = 1,
offhand_item = 1,
},
sound = {breaks = "default_tool_breaks"},
_repair_material = "group:wood",
wield_scale = vector.new(2, 2, 2),
_shield_color = colortab[4],
_mcl_wieldview_item = "",
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})
local banner = "mcl_banners:banner_item_" .. color
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minetest.register_craft({
type = "shapeless",
output = "mcl_shields:shield_" .. color,
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recipe = {"mcl_shields:shield", banner},
})
minetest.register_craft({
type = "shapeless",
output = "mcl_shields:shield_" .. color .. "_enchanted",
recipe = {"mcl_shields:shield_enchanted", banner},
})
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end
local function to_shield_texture(banner_texture)
return banner_texture
:gsub("mcl_banners_base_inverted.png", "mcl_shield_base_nopattern.png^mcl_shield_pattern_base.png")
:gsub("mcl_banners_banner_base.png", "mcl_shield_base_nopattern.png^mcl_shield_pattern_base.png")
:gsub("mcl_banners_base", "mcl_shield_pattern_base")
:gsub("mcl_banners", "mcl_shield_pattern")
end
local function craft_banner_on_shield(itemstack, player, old_craft_grid, craft_inv)
if not string.find(itemstack:get_name(), "mcl_shields:shield_") then
return itemstack
end
local shield_stack
for i = 1, player:get_inventory():get_size("craft") do
local stack = old_craft_grid[i]
local name = stack:get_name()
if minetest.get_item_group(name, "shield") then
shield_stack = stack
break
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end
end
for i = 1, player:get_inventory():get_size("craft") do
local banner_stack = old_craft_grid[i]
local banner_name = banner_stack:get_name()
if string.find(banner_name, "mcl_banners:banner") and shield_stack then
local banner_meta = banner_stack:get_meta()
local layers_meta = banner_meta:get_string("layers")
local new_shield_meta = itemstack:get_meta()
if layers_meta ~= "" then
local color = mcl_banners.color_reverse(banner_name)
local layers = minetest.deserialize(layers_meta)
local texture = mcl_banners.make_banner_texture(color, layers)
new_shield_meta:set_string("description", mcl_banners.make_advanced_banner_description(itemstack:get_description(), layers))
new_shield_meta:set_string("mcl_shields:shield_custom_pattern_texture", to_shield_texture(texture))
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end
itemstack:set_wear(shield_stack:get_wear())
break
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end
end
end
minetest.register_craft_predict(function(itemstack, player, old_craft_grid, craft_inv)
return craft_banner_on_shield(itemstack, player, old_craft_grid, craft_inv)
end)
minetest.register_on_craft(function(itemstack, player, old_craft_grid, craft_inv)
return craft_banner_on_shield(itemstack, player, old_craft_grid, craft_inv)
end)
minetest.register_on_joinplayer(function(player)
mcl_shields.players[player] = {
shields = {},
blocking = 0,
}
remove_shield_hud(player)
end)