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-rw-r--r--src/enemies.s6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/enemies.s b/src/enemies.s
index aa2e0aa..0c0873f 100644
--- a/src/enemies.s
+++ b/src/enemies.s
@@ -147,6 +147,12 @@
;; The 'y' register will be updated by increasing its value by 16,
;; indicating the amount of bytes allocated in OAM space.
;;
+ ;; The 'x' register will be changed, so make sure to back it up if you care
+ ;; about its value before calling this function.
+ ;;
+ ;; The 'Globals::zp_tmp0', 'Globals::zp_tmp1' and 'Globals::zp_tmp2' memory
+ ;; regions are also tampered by this function.
+ ;;
;; NOTE: this function assumes that the enemy is in a valid state. That's up
;; to the caller to check on this before calling this function.
.proc allocate_x_y