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projectile-trigger.lua
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103 lines (88 loc) · 2.52 KB
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-- trigger commands when projectiles hit targets
--author expwnent
--based on Putnam's projectileExpansion
--TODO: trigger based on contaminants
local usage = [====[
modtools/projectile-trigger
===========================
This triggers dfhack commands when projectiles hit their targets. Usage::
-clear
unregister all triggers
-material
specify a material for projectiles that will trigger the command
examples:
INORGANIC:IRON
CREATURE_MAT:DWARF:BRAIN
PLANT_MAT:MUSHROOM_HELMET_PLUMP:DRINK
-command [ commandList ]
\\LOCATION
\\PROJECTILE_ID
\\FIRER_ID
\\anything -> \anything
anything -> anything
]====]
local eventful = require 'plugins.eventful'
local utils = require 'utils'
materialTriggers = materialTriggers or {} --as:{_type:table,command:__arg,material:__arg}[][]
eventful.enableEvent(eventful.eventType.UNLOAD,1)
eventful.onUnload.projectileTrigger = function()
materialTriggers = {}
end
function processTrigger(args)
local command2 = {} --as:string[]
for _,arg in ipairs(args.command) do
if arg == '\\LOCATION' then
table.insert(command2,tostring(args.pos.x))
table.insert(command2,tostring(args.pos.y))
table.insert(command2,tostring(args.pos.z))
elseif arg == '\\PROJECTILE_ID' then
table.insert(command2,tostring(args.projectile.id))
elseif arg == '\\FIRER_ID' then
table.insert(command2,tostring(args.projectile.firer.id))
elseif string.sub(arg,1,1) == '\\' then
table.insert(command2,string.sub(arg,2))
else
table.insert(command2,arg)
end
end
dfhack.run_command(table.unpack(command2))
end
eventful.onProjItemCheckImpact.expansion = function(projectile)
local matStr = dfhack.matinfo.decode(projectile.item):getToken()
for _,args in ipairs(materialTriggers[matStr] or {}) do
processTrigger({
pos = projectile.cur_pos,
projectile = projectile,
item = projectile.item,
command = args.command,
material = args.material
})
end
end
local validArgs = utils.invert({
'help',
'clear',
'command',
'material',
})
local args = utils.processArgs({...}, validArgs)
if args.help then
print(usage)
return
end
if args.clear then
materialTriggers = {}
end
if not args.command then
return
end
if not args.material then
error 'specify a material'
end
if not dfhack.matinfo.find(args.material) then
error ('invalid material: ' .. args.material)
end
if not materialTriggers[args.material] then
materialTriggers[args.material] = {}
end
table.insert(materialTriggers[args.material], args)