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ootw: slug falling sorta works
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Vince Weaver
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80fd7c3565
commit
fd070d412d
@ -76,6 +76,7 @@ BEHAVIOR DIFFERENCES:
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- small things like birds flying are not implemented
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* caverns:
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- slugs possibly can fall due to earthquake?
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- beast on hill and 2nd screen -- complex, only appears if
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you happen to leave same time beast does? then movement
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depends on xposition?
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@ -14,6 +14,8 @@
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; Attacks: only attack if on ground and physicist is on ground
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; will attempt to attack if you jump over
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; Off edge of screen: will disappear but will respawn if leave/re-enter
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; Fall from ceiling when get too close, also earthquakes?
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; algorithm unclear
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;==================================
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; draw slugs
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@ -116,11 +118,14 @@ init_slug_loop:
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regular_slug:
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sta slugg_out,X
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; Mark slug as not attacking or dying
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; Put 1st slug on floor, rest on ceiling
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; Mark slug as not attacking, dying, or falling
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lda #0
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sta slugg_attack,X
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sta slugg_dying,X
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sta slugg_falling,X
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; Point the slug in the correct direction (left in this case)
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@ -159,9 +164,26 @@ slugx_not_too_high:
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rts
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;========================
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; Refresh slugs
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;========================
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; call when re-enter room
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; any falling slugs put on ground
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; any off-screen slugs, respawn
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refresh_slugs:
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rts
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;========================
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;========================
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; Draw the slug creatures
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;========================
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;========================
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draw_slugs:
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@ -214,13 +236,18 @@ check_attack:
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; see if attack
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lda slugg_out,X ; only attack if out
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cmp #1
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bne no_attack
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beq no_attack
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lda slugg_y,X ; only attack if on ground
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cmp #30
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bne no_attack
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lda slugg_dying,X ; only attack if not exploding
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bne no_attack
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lda slugg_falling,X ; only attack if not falling
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bne no_attack
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; lda PHYSICIST_Y ; only attack if physicist on ground
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; cmp #22
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; bne no_attack
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@ -260,6 +287,33 @@ attack:
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ldx WHICH_SLUG
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no_attack:
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;====================
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; see if should fall
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lda slugg_y,X ; first see if on ceiling
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cmp #30
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beq no_falling
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lda slugg_falling,X
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bne no_falling
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lda slugg_x,X ; see if near physicist
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sec
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sbc PHYSICIST_X
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clc
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adc #5
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cmp #10
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bcs no_falling ; bge
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lda #1
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sta slugg_falling,X
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lda #0
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sta slugg_gait,X
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no_falling:
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inc slugg_gait,X ; increment slug gait counter
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lda slugg_gait,X ; only move every 64 frames
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@ -267,6 +321,9 @@ no_attack:
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cmp #$00
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bne slug_no_move
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lda slugg_falling,X ; don't move X if falling
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bne slug_no_move ; move Y instead in some cases
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slug_move:
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lda slugg_x,X
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clc
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@ -274,7 +331,7 @@ slug_move:
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sta slugg_x,X
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slug_check_right:
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cmp #37
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cmp #39
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bne slug_check_left
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jmp remove_slug
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@ -297,7 +354,7 @@ slug_no_move:
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;==============
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lda slugg_dying,X
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beq check_draw_attacking
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beq check_draw_falling
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slug_exploding:
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stx WHICH_SLUG
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tax ; urgh can't forget tax
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@ -325,6 +382,65 @@ no_progress:
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jmp slug_selected
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;===============
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; if falling
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;===============
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check_draw_falling:
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lda slugg_falling,X
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beq check_draw_attacking
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tay
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dey
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; actually fall
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cpy #7
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beq falling_slugs
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falling_slug_inc:
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inc slugg_falling,X
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lda slugg_falling,X
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cmp #13
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bne done_falling_slugs
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; transition to ground slug
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lda #0
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sta slugg_falling,X
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; set direction
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lda slugg_x,X
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cmp PHYSICIST_X
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bpl slug_transition_left
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lda #1
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bne slug_transition_store
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slug_transition_left:
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lda #$ff
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slug_transition_store:
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sta slugg_dir,X
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jmp done_falling_slugs
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falling_slugs:
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lda slugg_y,X
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cmp #30
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beq falling_slug_inc
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clc
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adc #2
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sta slugg_y,X
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done_falling_slugs:
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lda slug_falling_progression_lo,Y
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sta INL
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lda slug_falling_progression_hi,Y
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sta INH
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jmp slug_selected
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;==============
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; if attacking
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;==============
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@ -358,6 +474,11 @@ check_slug_ceiling:
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lda slugg_y,X
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cmp #30
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beq slug_normal
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;=====================
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; ceiling slug
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;=====================
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slug_ceiling:
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lda slugg_gait,X
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@ -379,6 +500,9 @@ slug_ceiling_squinched:
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jmp slug_selected
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;==============
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; if normal
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;==============
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@ -419,11 +543,11 @@ slug_selected:
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bmi slug_right
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slug_left:
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jsr put_sprite
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jsr put_sprite_crop
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jmp slug_done
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slug_right:
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jsr put_sprite_flipped
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jsr put_sprite_flipped_crop
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slug_done:
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ldx WHICH_SLUG
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@ -439,6 +563,7 @@ ds_smc2:
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slug_exit:
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rts
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remove_slug:
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lda #0
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sta slugg_out,X
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@ -447,8 +572,11 @@ remove_slug:
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;===========================
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;===========================
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; slug cutscene
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;===========================
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;===========================
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slug_cutscene:
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@ -34,6 +34,124 @@ slug_ceiling2:
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; slug on roof
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; swings a bit, then falls
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slug_falling_progression_hi:
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.byte >slug_falling1 ; 0
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.byte >slug_falling2 ; 1
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.byte >slug_falling3 ; 2
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.byte >slug_falling4 ; 3
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.byte >slug_falling5 ; 4
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.byte >slug_falling4 ; 5
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.byte >slug_falling6 ; 6
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.byte >slug_falling12 ; 7
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; falls
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.byte >slug_falling7 ; 8
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.byte >slug_falling8 ; 9
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.byte >slug_falling9 ; 10
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.byte >slug_falling10 ; 11
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.byte >slug_falling11 ; 12
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slug_falling_progression_lo:
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.byte <slug_falling1
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.byte <slug_falling2
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.byte <slug_falling3
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.byte <slug_falling4
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.byte <slug_falling5
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.byte <slug_falling4
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.byte <slug_falling6
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.byte <slug_falling12
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; falls
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.byte <slug_falling7
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.byte <slug_falling8
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.byte <slug_falling9
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.byte <slug_falling10
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.byte <slug_falling11
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slug_falling1:
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.byte 4,1
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.byte $AA,$A0,$A0,$A0
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slug_falling2:
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.byte 4,2
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.byte $AA,$A0,$0A,$AA
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.byte $AA,$AA,$AA,$A0
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slug_falling3:
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.byte 3,2
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.byte $AA,$00,$AA
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.byte $AA,$AA,$00
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slug_falling4:
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.byte 2,2
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.byte $AA,$00,$AA
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.byte $AA,$00,$AA
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slug_falling5:
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.byte 2,2
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.byte $AA,$00,$AA
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.byte $0A,$A0,$AA
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slug_falling6:
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.byte 2,2
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.byte $AA,$00,$AA
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.byte $AA,$A0,$0A
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slug_falling7:
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.byte 4,4
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.byte $AA,$AA,$AA,$AA
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.byte $AA,$AA,$AA,$AA
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.byte $AA,$AA,$AA,$AA
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.byte $AA,$0A,$00,$0A
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slug_falling8:
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.byte 4,4
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.byte $AA,$AA,$AA,$AA
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.byte $AA,$AA,$AA,$AA
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.byte $AA,$0A,$AA,$AA
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.byte $AA,$aA,$A0,$0A
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slug_falling9:
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.byte 4,4
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.byte $AA,$AA,$AA,$AA
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.byte $AA,$AA,$AA,$AA
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.byte $0A,$AA,$AA,$AA
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.byte $AA,$a0,$0A,$AA
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slug_falling10:
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.byte 4,4
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.byte $AA,$AA,$AA,$AA
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.byte $AA,$AA,$AA,$AA
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.byte $0A,$AA,$AA,$AA
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.byte $00,$0A,$0A,$AA
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slug_falling11:
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.byte 4,4
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.byte $AA,$AA,$AA,$AA
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.byte $AA,$AA,$AA,$AA
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.byte $AA,$AA,$AA,$AA
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.byte $0A,$00,$00,$0A
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slug_falling12:
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.byte 4,4
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.byte $AA,$00,$AA,$AA
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.byte $AA,$00,$AA,$AA
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.byte $AA,$00,$AA,$AA
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.byte $AA,$00,$AA,$AA
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slug_dropping:
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.byte 3,4
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.byte $AA,$AA,$AA
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.byte $AA,$AA,$AA
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.byte $AA,$AA,$AA
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.byte $AA,$AA,$AA
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;=======================
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