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Alright so in this video we're
going to talk about the new
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exercise that we're going to
do. So this is a more advanced
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exercise because we'll have to
use abstract classes, regular
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classes, enumerations, getters,
access modifiers, well a lot
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things, okay? So don't worry if
it's a little bit more
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complicated. Okay? So here is
the exercise. So summary let me
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zoom a little bit. Okay. So
here a wizard has a spell book
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containing multiple spells of
the same type. For example, for
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example, a wizard can have two
fire spells in his book or
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three frost spells in his book
but never a mix of fire and
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frost spells, okay? So there is
probably something generic
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around here. So first let's
talk about the wizard class. So
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a wizard is a class associated
to a spell. Either fire spell
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or frost spell. Okay? A wizard
can cast a spell by its name
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only if it's present in its
spell book. A wizard can cast
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all the spell of its spell book
at once. So there is a function
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to cast all the spell at once.
One after each other obviously.
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And a wizard is initialised
with an array of fire spell or
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frost spell. Then a spell. So a
spell is an abstract class. And
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a spell as a name that is
exposed. So I should be able to
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get the spell name from
outside. And any class that is
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going to extend a spell will
have to implement a cast
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function that is going to be
different for each spell so
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let's talk about the fire spell
a fire spell inherite from the
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abstract class spell a fire
spell has something very
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specific to it it has a burning
damage and it's equal to 20 all
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the time and that value cannot
be modified okay When a fire
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spell is cast, it displays the
name of the spell and then
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display boom, you are burning
the enemy, it took 20 damages,
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okay? And 20 here is obviously
the burning damage that you
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have in the fire spell class.
Also a fire spell has a name
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and it can only be Firebolt,
Firewall or Big Bang. Okay? And
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when you're going to create a
fire spell you're going to send
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it a name. Okay I'm going to
add that right here
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So a fire spell is initialized
with a name only.
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And a fire spell name can only
be firbolt, firewall or big
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bang. So we may have to work
with enums around here. Okay?
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And finally we're going to talk
about the frost spell. So a
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frost spell inherite from a
spell like a fire spell. And it
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has something very specific to
it. It has a slowing rate
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equal to zero. five. And that
value cannot be modified. Okay?
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And when a frost spell is cast
it displays the name of the
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spell and then display you're
freezing the eanymy it's slowed
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by zero. five. Okay? Where the
five is the slowing rate. Okay?
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And exactly I like a fire
spell. I'm going to add that. A
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frost spell is initialised with
the name only. Okay? And
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finally Frostpell as a name and
its name can only be Frostbolt
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or Blizzard okay so again this
has probably something to do
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with enemies okay so once all
of this will be done obviously
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I'm going to share that
document with you so once all
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of this will be done we will be
able to work on the story So we
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have several things to do.
We're going to create a fire
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spell array containing a fire
bolt and a firewall. And we're
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going to create a frost spell
array containing a frostbolt
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and a blizzard. We're going to
create a fire wizard and
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initialize it with fire spell
array. We're going to create a
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frost wizard and initialize it
with the frost spell array that
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we have created here. We're
going to cast all the fire
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wizard spell at once. We're
going to cast a big bank from
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the fire wizard spell book. And
if it throws an error, catch
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it. Then we're going to cast
all the frost wizard spell at
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once. And finally we cast a
blizzard spell from the frost
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wizard spell book. Okay? So
technically this should be easy
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to do if all of that has been
done correctly. Okay? So I'm
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going to share all of that with
you and don't worry if you
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cannot do it to the end, okay?
It's alright. Uh it's a more
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advanced exercise. Okay? But
try your best and try to go as
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far as you can. Good luck and
see you on the next one for the
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correction.