diff options
Diffstat (limited to 'src/enemies.s')
| -rw-r--r-- | src/enemies.s | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/src/enemies.s b/src/enemies.s index 7aa8df1..53f6685 100644 --- a/src/enemies.s +++ b/src/enemies.s @@ -116,6 +116,21 @@ sty zp_enemies_pool_size @enemies_init_loop: + jsr init_enemy_x + + ;; Next enemy! + dey + bne @enemies_init_loop + + rts + .endproc + + ;; Initialize the enemy from the pool as indexed by the 'x' register. + ;; + ;; NOTE: the 'x' register will be advanced by the amount of bytes it takes + ;; to store an enemy on the poll (i.e. 4 bytes). + ;; NOTE: the 'y' register is not touched. + .proc init_enemy_x ;; The state is set at random. stx Globals::zp_tmp0 jsr Prng::random_valid_y_coordinate @@ -148,10 +163,8 @@ inx sta zp_enemies_pool_base, x - ;; Next enemy! + ;; And point to the next enemy. inx - dey - bne @enemies_init_loop rts .endproc |