diff options
Diffstat (limited to 'src/driver.s')
| -rw-r--r-- | src/driver.s | 42 |
1 files changed, 33 insertions, 9 deletions
diff --git a/src/driver.s b/src/driver.s index 7404b94..8b366b7 100644 --- a/src/driver.s +++ b/src/driver.s @@ -126,6 +126,9 @@ ora #%00001000 sta Player::zp_state + ;; Prepare the items for the scene. + jsr Items::prepare_scene + ;; Mark the state of the game as "game". That is, the player has ;; started. Also set the `ppu` flag and unset the `title over` one. lda #%01000001 @@ -159,6 +162,15 @@ dey bne @bullets_reset_loop + ;; Invalidate all items. + ldx #0 + ldy #Items::POOL_CAPACITY + @items_reset_loop: + sta Items::zp_pool_base, x + NEXT_ITEM_INDEX_X + dey + bne @items_reset_loop + ;; Set that we have done this operation so it's not done in future ;; cycles. lda #1 @@ -208,6 +220,7 @@ jsr Bullets::init jsr Enemies::init jsr Explosions::init + jsr Items::init ;; Initialize pause timer and some boolean values. lda #0 @@ -286,6 +299,7 @@ jsr Enemies::update @do_minimal_update: jsr Explosions::update + jsr Items::update ;; Has the player died? If it is dead, then we need to remove all ;; sprites except for objects and explosions, and whenever @@ -414,11 +428,24 @@ @set_next_enemies_cycle: stx zp_next_enemy_cycle - ;; TODO: ensure 1 item - ;; iny - ;; iny - ;; iny - ;; iny + ;; Allocate all valid items. Items, contrary to other sprites, don't get + ;; the special "you get a fixed first position" like others, mainly + ;; because there are so few of them on screen at any given time. For + ;; this reason as well, it's ok to just dump them all here before the + ;; rest of sprites are churned in. + ldx #0 + @rest_o_items: + cpx #Items::POOL_CAPACITY_BYTES + beq @rest_o_bullets + + lda Items::zp_pool_base, x + cmp #$FF + beq @next_item + jsr Items::allocate_x_y + + @next_item: + NEXT_ITEM_INDEX_X + jmp @rest_o_items ;; Allocate the rest of valid bullets from the pool. ldx #0 @@ -483,7 +510,7 @@ ;; enemies, then jump to items. If the current indexed enemy is the one ;; we allocated as the first fixed one, then skip it. cpx #Enemies::ENEMIES_POOL_CAPACITY_BYTES - beq @rest_o_items + beq @do_explosions cpx zp_first_enemy beq @next_enemy @@ -506,9 +533,6 @@ NEXT_ENEMY_INDEX_X jmp @rest_o_enemies_loop - @rest_o_items: - ;;; TODO - ;; At the very end, we allocate any active explosion. @do_explosions: ldx #0 |