Explosion

Damage with no source: no turret, no bullet — something simply exploded at a point on the map

mediumYou need: What a world processor is, Everything a team has

steptick 0

Jump -> 30

if not

Explosion1

teamxyradiusdamageairgroundpierceeffect

Set2

=

Fetch3

typeunit countresultteamindexextra

Stop4

@counter0number

blownnullnull

enemiesnullnull

explosion @sharded 10 5 3 200 1 1 0 0

Once — and the enemy dagger on tile 10 5 is gone: enemies drops from two to one. The second, standing aside, is intact — the radius did not reach it.

Field	What is in it
first	whose explosion it is: it will not touch its own
second and third	the point in tiles
fourth	the radius in tiles
fifth	the damage
sixth and seventh	whether to hit air and ground
eighth	whether to pierce: hit everybody through, or only the first
ninth	whether to show a flash

The team decides who gets hurt

The first field is not “who to hit” but whose explosion this is. Everybody not on that team suffers.

explosion @sharded 10 5 3 200 1 1 0 0   # your explosion, hits enemies
explosion @crux 10 5 3 200 1 1 0 0      # the enemy's, hits you

It is easy to mix up, and the mistake is a quiet one: the program dutifully explodes and the target stands there untouched — the explosion simply turned out to be “its own”.

Note

The sixth and seventh fields separate air from ground. An explosion told to hit the ground only will not touch a flare or a poly — that is how ground mines are made in scripts.

Silent failure

Damage falls off towards the edge of the radius. At the point of the explosion it is full, and at the boundary about 40% remains — only with piercing on (the eighth field) does the circle cover everybody equally.

So “set a bigger radius” is not the same as “hit harder”: a distant enemy gets its share and survives.

What it is used for

An explosion is a scripting tool, needed where damage has to happen for no reason:

• traps and mines on a map: the player stepped into a forbidden zone — explosion;
• events: a meteorite, a collapse, sabotage;
• punishment for breaking a script’s rule — for building in a forbidden area, for instance;
• finishing off: the script wants the wave to end right now.

query circle unit @crux 10 5 3 0
sensor amount @queries @size
jump 0 equal amount 0
explosion @sharded 10 5 3 200 1 1 0 0

Silent failure

An explosion hits buildings too. A three-tile radius in the middle of a base will not just remove an enemy: everything not on your team takes damage — derelict structures and walls included.

The program has to check who is in the radius itself: query over the same area and the same team.

Remember

• explosion team x y radius damage air ground pierce flash deals area damage.
• The first field is whose explosion it is; it does not touch its own.
• The radius and coordinates are in tiles, the damage an ordinary number.
• Air and ground are separated from each other.
• Buildings in the radius take damage too.

Task

Change the team in the example from @sharded to @crux: the explosion becomes the enemy’s and the daggers survive it — enemies stays at two.

Then put @sharded back and set the radius to 10: the second dagger is covered too, but it survives the hit — it is six tiles away, and less than a quarter of two hundred damage reaches it.