--[[Author: Pizzalol
Date: 24.03.2015.
Creates the land mine and keeps track of it]]
function LandMinesPlant( keys )
local caster = keys.caster
local target_point = keys.target_points[1]
local ability = keys.ability
local ability_level = ability:GetLevel() - 1
-- Initialize the count and table
caster.land_mine_count = caster.land_mine_count or 0
caster.land_mine_table = caster.land_mine_table or {}
-- Modifiers
local modifier_land_mine = keys.modifier_land_mine
local modifier_tracker = keys.modifier_tracker
local modifier_caster = keys.modifier_caster
local modifier_land_mine_invisibility = keys.modifier_land_mine_invisibility
-- Ability variables
local activation_time = ability:GetLevelSpecialValueFor("activation_time", ability_level)
local max_mines = ability:GetLevelSpecialValueFor("max_mines", ability_level)
local fade_time = ability:GetLevelSpecialValueFor("fade_time", ability_level)
-- Create the land mine and apply the land mine modifier
local land_mine = CreateUnitByName("npc_dota_techies_land_mine", target_point, false, nil, nil, caster:GetTeamNumber())
ability:ApplyDataDrivenModifier(caster, land_mine, modifier_land_mine, {})
-- Update the count and table
caster.land_mine_count = caster.land_mine_count + 1
table.insert(caster.land_mine_table, land_mine)
-- If we exceeded the maximum number of mines then kill the oldest one
if caster.land_mine_count > max_mines then
caster.land_mine_table[1]:ForceKill(true)
end
-- Increase caster stack count of the caster modifier and add it to the caster if it doesnt exist
if not caster:HasModifier(modifier_caster) then
ability:ApplyDataDrivenModifier(caster, caster, modifier_caster, {})
end
caster:SetModifierStackCount(modifier_caster, ability, caster.land_mine_count)
-- Apply the tracker after the activation time
Timers:CreateTimer(activation_time, function()
ability:ApplyDataDrivenModifier(caster, land_mine, modifier_tracker, {})
end)
-- Apply the invisibility after the fade time
Timers:CreateTimer(fade_time, function()
ability:ApplyDataDrivenModifier(caster, land_mine, modifier_land_mine_invisibility, {})
end)
end
--[[Author: Pizzalol
Date: 24.03.2015.
Stop tracking the mine and create vision on the mine area]]
function LandMinesDeath( keys )
local caster = keys.caster
local unit = keys.unit
local ability = keys.ability
local ability_level = ability:GetLevel() - 1
-- Ability variables
local modifier_caster = keys.modifier_caster
local vision_radius = ability:GetLevelSpecialValueFor("vision_radius", ability_level)
local vision_duration = ability:GetLevelSpecialValueFor("vision_duration", ability_level)
-- Find the mine and remove it from the table
for i = 1, #caster.land_mine_table do
if caster.land_mine_table == unit then
table.remove(caster.land_mine_table, i)
caster.land_mine_count = caster.land_mine_count - 1
break
end
end
-- Create vision on the mine position
ability:CreateVisibilityNode(unit:GetAbsOrigin(), vision_radius, vision_duration)
-- Update the stack count
caster:SetModifierStackCount(modifier_caster, ability, caster.land_mine_count)
if caster.land_mine_count < 1 then
caster:RemoveModifierByNameAndCaster(modifier_caster, caster)
end
end
--[[Author: Pizzalol
Date: 24.03.2015.
Tracks if any enemy units are within the mine radius]]
function LandMinesTracker( keys )
local target = keys.target
local ability = keys.ability
local ability_level = ability:GetLevel() - 1
-- Ability variables
local trigger_radius = ability:GetLevelSpecialValueFor("small_radius", ability_level)
local explode_delay = ability:GetLevelSpecialValueFor("explode_delay", ability_level)
-- Target variables
local target_team = DOTA_UNIT_TARGET_TEAM_ENEMY
local target_types = DOTA_UNIT_TARGET_HERO + DOTA_UNIT_TARGET_BASIC + DOTA_UNIT_TARGET_BUILDING
local target_flags = DOTA_UNIT_TARGET_FLAG_MAGIC_IMMUNE_ENEMIES
-- Find the valid units in the trigger radius
local units = FindUnitsInRadius(target:GetTeamNumber(), target:GetAbsOrigin(), nil, trigger_radius, target_team, target_types, target_flags, FIND_CLOSEST, false)
-- If there is a valid unit in range then explode the mine
if #units > 0 then
Timers:CreateTimer(explode_delay, function()
if target:IsAlive() then
target:ForceKill(true)
end
end)
end
end
