Creative Spell

[flaviiojr]

a spell where it would work as follows:
the creature casting the spell will have an effect of it to the player, as shown in the image below ... regardless of location, the effect will follow a path to the player ...
Any ideas?

Spoiler: Image

I thank you all very much!
TFS 1.3

 

[Madzix]

Spoiler

local combat = Combat()
combat:setParameter(COMBAT_PARAM_TYPE, COMBAT_PHYSICALDAMAGE)
combat:setParameter(COMBAT_PARAM_EFFECT, CONST_ME_MORTAREA)
--combat:setParameter(COMBAT_PARAM_DISTANCEEFFECT, CONST_ANI_DEATH)

function onGetFormulaValues(cid, level, maglevel)
    return -math.max(35, (3 * maglevel + 2 * level) * 0.35), -math.max(55, (3 * maglevel + 2 * level) * 0.55)
end

combat:setCallback(CALLBACK_PARAM_LEVELMAGICVALUE, "onGetFormulaValues")

function onCastSpell(creature, var)
    local target = creature:getTarget()
    if(not target) then
        return false
    end

    local startPos = creature:getPosition()
    local endPos = target:getPosition()
    local path = creature:getPathTo(endPos)
    if(path) then
        for i = 1, #path do
            startPos:getNextPosition(path[i])
            combat:execute(creature, Variant(startPos))
        end

        if(startPos.x < endPos.x) then --some workaround since getPathTo don't give us full path
            if(startPos.y ~= endPos.y) then
                startPos.x = startPos.x + 1
                combat:execute(creature, Variant(startPos))
            end
        elseif(startPos.x > endPos.x) then
            if(startPos.y ~= endPos.y) then
                startPos.x = startPos.x - 1
                combat:execute(creature, Variant(startPos))
            end
        end

        combat:execute(creature, Variant(endPos))
    else
        return false
    end

    return true
end

To use only diagonal pathfinding as in your photo you need to edit "getPathTo" in source.

 

[flaviiojr]

Spoiler

local combat = Combat()
combat:setParameter(COMBAT_PARAM_TYPE, COMBAT_PHYSICALDAMAGE)
combat:setParameter(COMBAT_PARAM_EFFECT, CONST_ME_MORTAREA)
--combat:setParameter(COMBAT_PARAM_DISTANCEEFFECT, CONST_ANI_DEATH)

function onGetFormulaValues(cid, level, maglevel)
    return -math.max(35, (3 * maglevel + 2 * level) * 0.35), -math.max(55, (3 * maglevel + 2 * level) * 0.55)
end

combat:setCallback(CALLBACK_PARAM_LEVELMAGICVALUE, "onGetFormulaValues")

function onCastSpell(creature, var)
    local target = creature:getTarget()
    if(not target) then
        return false
    end

    local startPos = creature:getPosition()
    local endPos = target:getPosition()
    local path = creature:getPathTo(endPos)
    if(path) then
        for i = 1, #path do
            startPos:getNextPosition(path[i])
            combat:execute(creature, Variant(startPos))
        end

        if(startPos.x < endPos.x) then --some workaround since getPathTo don't give us full path
            if(startPos.y ~= endPos.y) then
                startPos.x = startPos.x + 1
                combat:execute(creature, Variant(startPos))
            end
        elseif(startPos.x > endPos.x) then
            if(startPos.y ~= endPos.y) then
                startPos.x = startPos.x - 1
                combat:execute(creature, Variant(startPos))
            end
        end

        combat:execute(creature, Variant(endPos))
    else
        return false
    end

    return true
end

To use only diagonal pathfinding as in your photo you need to edit "getPathTo" in source.

It worked perfectly, dude !! Thank you so much !