Effect.SetCost

Signature

Effect.SetCost(Effect e, function cost_func) -> void

Description

Sets e's cost callback. For activated effects, the callback checks whether the cost can be paid and then pays it. Cost callbacks should only test legality when chk is 0; irreversible payment belongs in the nonzero chk branch.

How To Use It

Cost callbacks usually have two phases. When chk==0, only answer whether the cost can be paid. When chk is not 0, actually pay the cost.

function s.cost(e,tp,eg,ep,ev,re,r,rp,chk)
    if chk==0 then return Duel.CheckLPCost(tp,1000) end
    Duel.PayLPCost(tp,1000)
end

Do not perform irreversible actions during the chk==0 check. The engine may call that branch just to test activation legality.

Related Functions

• Duel.CheckLPCost
• Duel.PayLPCost
• Effect.IsCostChecked

Parameters

• e Effect - Effect whose cost callback is replaced.
• cost_func function - Callback usually shaped as cost_func(e,tp,eg,ep,ev,re,r,rp,chk).

Source

• D:\Programs\GitHub\ygopro-core\libeffect.cpp:627

Guided Examples

Learn how to use this function in context:

• Cost, Target, And Operation Lifecycle
• Counter Traps
• Conditions, Costs, Activation Procedures, and Resolution

Used By

Generated from the local Scripts/ folder and cards.cdb.

• Detected in 4809 indexed script(s).
• Search this function in the Script Explorer with Effect.SetCost.

Card	ID	Script	Detected Calls
Salamandra with Chain	62091148	Scripts/c62091148.lua	2
Levia-Dragoon - Daedalus	78579058	Scripts/c78579058.lua	1
Azure Ocean Dragon Lord - Neo-Daedalus Rage	41570943	Scripts/c41570943.lua	1
Eternal Favorite	87532344	Scripts/c87532344.lua	1
Surprise Fusion	35167375	Scripts/c35167375.lua	1
Astrograph Sorcerer	76794549	Scripts/c76794549.lua	1
Spellbook of the Grand Circle	11911336	Scripts/c11911336.lua	1
Ultra Polymerization	76647978	Scripts/c76647978.lua	2
Goyo Emperor	59255742	Scripts/c59255742.lua	1
Accel Synchro Stardust Dragon	30983281	Scripts/c30983281.lua	1
Melffy Playtime Surprise	58036097	Scripts/c58036097.lua	1
Ashtraja Susanoo	17020474	Scripts/c17020474.lua	1
Deftero Enneacraft - "alazoneIA"	92171126	Scripts/c92171126.lua	3
Mementotlan Fusion	66518509	Scripts/c66518509.lua	1
Meteoroa Drytron	24166324	Scripts/c24166324.lua	2
Ehther the Heavenly Monarch	96570609	Scripts/c96570609.lua	1
Lubellion the Searing Dragon	70534340	Scripts/c70534340.lua	1
Ghostrick Renovation	61818176	Scripts/c61818176.lua	1
Ursarctic Polari	27693363	Scripts/c27693363.lua	1
Prank-Kids Weather Washer	44509529	Scripts/c44509529.lua	1
Enneacraft - Asta.PIXEA	28454232	Scripts/c28454232.lua	2
Odd-Eyes Revolution Dragon	16306932	Scripts/c16306932.lua	2
Aiwass, Divine Spirit of the Law	84288367	Scripts/c84288367.lua	1
Resurgam Xyz	49082032	Scripts/c49082032.lua	1
...and 4785 more

Script Examples

Salamandra with Chain (62091148)

Source: Scripts/c62091148.lua

	e1:SetProperty(EFFECT_FLAG_CARD_TARGET+EFFECT_FLAG_DAMAGE_STEP)
	e1:SetCondition(aux.dscon)
	e1:SetCost(s.cost)
	e1:SetTarget(s.target)
	e1:SetOperation(s.operation)

Levia-Dragoon - Daedalus (78579058)

Source: Scripts/c78579058.lua

	e2:SetHintTiming(0,TIMINGS_CHECK_MONSTER+TIMING_MAIN_END)
	e2:SetCondition(s.drcon)
	e2:SetCost(s.drcost)
	e2:SetTarget(s.drtg)
	e2:SetOperation(s.drop)

Azure Ocean Dragon Lord - Neo-Daedalus Rage (41570943)

Source: Scripts/c41570943.lua

	e2:SetCountLimit(1)
	e2:SetHintTiming(0,TIMINGS_CHECK_MONSTER+TIMING_END_PHASE)
	e2:SetCost(s.tgcost)
	e2:SetTarget(s.tgtg)
	e2:SetOperation(s.tgop)