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-- Core functions for corruptions
__corruptions = {}
__corruptions_max = 0
__corruptions_callbacks_max = 0
-- Get the corruption
function player.corruption(c, set)
if set then
player.corruptions_aux[c + 1] = set
player.redraw = bor(player.redraw, PR_BASIC)
player.update = bor(player.update, PU_BONUS, PU_TORCH, PU_BODY, PU_POWERS)
if (set == TRUE) and (__corruptions[c].gain) then
__corruptions[c].gain()
end
if (set == FALSE) and (__corruptions[c].lose) then
__corruptions[c].lose()
end
else
return player.corruptions_aux[c + 1]
end
end
-- Test if we have that corruption
-- We must:
-- 1) have it or be willing to get it
-- 2) have all its dependancies
-- 3) have none of its opposing corruptions
-- 4) pass the possible tests
function test_depend_corrupt(corrupt, can_gain)
local i, c
if not can_gain then can_gain = FALSE end
if can_gain == TRUE then
if (player.corruption(corrupt) ~= FALSE) then
return FALSE
end
else
if (player.corruption(corrupt) ~= TRUE) then
return FALSE
end
end
for c, i in __corruptions[corrupt].depends do
if test_depend_corrupt(c) ~= TRUE then
return FALSE
end
end
for c, i in __corruptions[corrupt].oppose do
if test_depend_corrupt(c) ~= FALSE then
return FALSE
end
end
-- are we even allowed to get it?
if __corruptions[corrupt].can_gain and (not __corruptions[corrupt].can_gain()) then
return FALSE
end
return TRUE
end
-- Gain a new corruption
function gain_corruption(group)
local i, max
local pos = {}
-- Get the list of all possible ones
max = 0
for i = 0, __corruptions_max - 1 do
if __corruptions[i].group == group and test_depend_corrupt(i, TRUE) == TRUE and __corruptions[i].random == TRUE and __corruptions[i].allow() then
pos[max] = i
max = max + 1
end
end
-- Ok now get one of them
if (max > 0) then
local ret = rand_int(max)
player.corruption(pos[ret], TRUE)
cmsg_print(TERM_L_RED, __corruptions[pos[ret]].get_text)
return pos[ret]
else
return -1
end
end
-- Lose an existing corruption
function lose_corruption()
local i, max
local pos = {}
-- Get the list of all possible ones
max = 0
for i = 0, __corruptions_max - 1 do
if test_depend_corrupt(i) == TRUE and __corruptions[i].removable == TRUE then
pos[max] = i
max = max + 1
end
end
-- Ok now get one of them
if (max > 0) then
local ret = rand_int(max)
player.corruption(pos[ret], FALSE)
cmsg_print(TERM_L_RED, __corruptions[pos[ret]].lose_text)
-- Ok now lets see if it broke some dependancies
for i = 0, max - 1 do
if player.corruption(pos[i]) ~= test_depend_corrupt(pos[i]) then
player.corruption(pos[i], FALSE)
cmsg_print(TERM_L_RED, __corruptions[pos[i]].lose_text)
end
end
return pos[ret]
else
return -1
end
end
-- Lose all corruptions (for e.g. Potion of New Life)
function lose_all_corruptions()
local i;
for i = 0, __corruptions_max - 1 do
lose_corruption()
end
return -1
end
-- Creates a new corruption
function add_corruption(c)
assert(c.color, "No corruption color")
assert(c.name, "No corruption name")
assert(c.get_text, "No corruption get_text")
assert(c.lose_text, "No corruption lose_text")
assert(c.desc, "No corruption desc")
assert(c.hooks, "Nothing to do for corruption")
if not c.random then c.random = TRUE end
if not c.removable then c.removable = TRUE end
if not c.allow then c.allow = function() return not nil end end
if c.depends == nil then c.depends = {} end
if c.oppose == nil then c.oppose = {} end
-- We must make sure the other ones opposes too
local o, i
for o, i in c.oppose do
__corruptions[o].oppose[__corruptions_max] = TRUE
end
local index, h
for index, h in c.hooks do
add_hook_script(index, "__lua__corrupt_callback"..__corruptions_callbacks_max, "__lua__corrupt_callback"..__corruptions_callbacks_max)
setglobal("__lua__corrupt_callback"..__corruptions_callbacks_max,
function (...)
if test_depend_corrupt(%__corruptions_max) == TRUE then
return call(%h, arg)
end
end
)
__corruptions_callbacks_max = __corruptions_callbacks_max + 1
end
if type(c.desc) == "table" then
local new_desc = ""
for index, h in c.desc do
new_desc = new_desc..h.."\n"
end
c.desc = new_desc
end
__corruptions[__corruptions_max] = c
__corruptions_max = __corruptions_max + 1
return (__corruptions_max - 1)
end
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