Add cloud with disturbance tiles for invisible monsters in cloud.

This fix Mantis 2573.

I didn't do ink, forest fire, holy flames and gloom because even though they are
supposed to be opaque clouds, it seemed unnecessary.

To make the tiles, I used the unseen monster tile, filed it with 50% gray,
blurred it and used it as a layer mask to add transparency to the clouds.
I saved the shape as UNUSED/other/cloud_disturbance_shape.png
This is my first tiles, so someone more skilled should be able to do better.

4 files changed, 0 insertions, 0 deletions

diff --git a/crawl-ref/source/rltiles/effect/cloud_black_smoke_disturbance.png b/crawl-ref/source/rltiles/effect/cloud_black_smoke_disturbance.png
new file mode 100644
index 0000000000..4be2f54438
--- /dev/null
+++ b/crawl-ref/source/rltiles/effect/cloud_black_smoke_disturbance.png
diff --git a/crawl-ref/source/rltiles/effect/cloud_blue_smoke_disturbance.png b/crawl-ref/source/rltiles/effect/cloud_blue_smoke_disturbance.png
new file mode 100644
index 0000000000..6ad5d74503
--- /dev/null
+++ b/crawl-ref/source/rltiles/effect/cloud_blue_smoke_disturbance.png
diff --git a/crawl-ref/source/rltiles/effect/cloud_grey_smoke_disturbance.png b/crawl-ref/source/rltiles/effect/cloud_grey_smoke_disturbance.png
new file mode 100644
index 0000000000..efe6e6afc2
--- /dev/null
+++ b/crawl-ref/source/rltiles/effect/cloud_grey_smoke_disturbance.png
diff --git a/crawl-ref/source/rltiles/effect/cloud_tloc_energy_disturbance.png b/crawl-ref/source/rltiles/effect/cloud_tloc_energy_disturbance.png
new file mode 100644
index 0000000000..b1bc5bf9ff
--- /dev/null
+++ b/crawl-ref/source/rltiles/effect/cloud_tloc_energy_disturbance.png