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https://github.com/deater/dos33fsprogs.git
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ootw: more work on guard issues
this code will actually crash
This commit is contained in:
Vince Weaver
parent
78cd78f27e
commit
db650f467d
61
ootw/alien.s
61
ootw/alien.s
@ -32,6 +32,8 @@ A_WALKING = 1
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A_RUNNING = 2
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A_CROUCHING = 3
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A_TURNING = 4
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A_YELLING = 5
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A_SHOOTING_UP = 6
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;=======================================
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; Move alien based on current state
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@ -46,13 +48,21 @@ move_alien:
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lda alien_state+ALIEN_STATE,X
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cmp #P_WALKING
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cmp #A_WALKING
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beq move_alien_walking
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cmp #P_RUNNING
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cmp #A_RUNNING
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beq move_alien_running
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cmp #A_YELLING
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beq move_alien_yelling
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done_move_alien:
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rts
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;======================
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; yelling
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move_alien_yelling:
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inc alien_state+ALIEN_GAIT,X ; cycle through animation
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rts
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;======================
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; walking
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@ -109,6 +119,7 @@ astate_table_lo:
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.byte <alien_running ; 02
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.byte <alien_crouching ; 03
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.byte <alien_turning ; 04
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.byte <alien_yelling ; 05
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astate_table_hi:
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.byte >alien_standing ; 00
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@ -116,6 +127,7 @@ astate_table_hi:
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.byte >alien_running ; 02
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.byte >alien_crouching ; 03
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.byte >alien_turning ; 04
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.byte >alien_yelling ; 05
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; Urgh, make sure this doesn't end up at $FF or you hit the
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; NMOS 6502 bug
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@ -279,6 +291,51 @@ alien_draw_turning:
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;===============================
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; Yelling
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;================================
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alien_yelling:
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lda alien_state+ALIEN_GAIT,X
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and #$10
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lsr
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lsr
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and #2
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tay
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lda alien_yell_progression,Y
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sta INL
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lda alien_yell_progression+1,Y
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sta INH
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jmp finally_draw_alien
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;===============================
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; Shooting Upward
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;================================
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alien_shooting_up:
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lda alien_state+ALIEN_GAIT,X
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and #$10
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lsr
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lsr
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and #2
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tay
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lda alien_shoot_up_progression,Y
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sta INL
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lda alien_shoot_up_progression+1,Y
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sta INH
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jmp finally_draw_alien
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;=============================
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; Actually Draw Alien
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;=============================
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@ -69,6 +69,8 @@ cage_loop:
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sta YPOS
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lda CAGE_AMPLITUDE
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cmp #3
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beq cage_amp_2
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cmp #2
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beq cage_amp_2
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cmp #1
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@ -171,15 +173,44 @@ patrolling_right:
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sta alien0_state
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patrolling_move:
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jsr move_alien
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jsr draw_alien
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lda CAGE_AMPLITUDE
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cmp #2
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beq guard_yelling
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cmp #3
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beq guard_shooting
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jmp guard_move_and_draw
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guard_yelling:
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lda alien0_x
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cmp #21
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bne guard_move_and_draw
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lda #A_YELLING
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sta alien0_state
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jmp guard_move_and_draw
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guard_shooting:
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; guard shooting
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lda alien0_x
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cmp #21
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bne guard_move_and_draw
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lda #A_SHOOTING_UP
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sta alien0_state
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jmp guard_move_and_draw
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guard_move_and_draw:
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jsr move_alien
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jsr draw_alien
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jmp done_cage_guard
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done_cage_guard:
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@ -204,10 +235,15 @@ check_amp1:
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check_amp2:
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cmp #2
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bne check_amp3
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; if amp=2, guard shouts
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jmp cage_continue
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check_amp3:
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cmp #3
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bne check_amp4 ; if amp=3, guard shoots
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check_amp4:
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cmp #4 ; if amp=4, cage falls
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bne cage_continue
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@ -395,3 +395,60 @@ alien_turning_sprite:
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.byte $aa,$77,$55,$aa,$aa
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.byte $07,$aa,$05,$aa,$aa
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.byte $00,$aa,$00,$aa,$aa
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;=====================
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;=====================
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; YELLING
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;=====================
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;=====================
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alien_yell_progression:
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.word alien_yelling_1
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.word alien_yelling_2
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alien_yelling_1:
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.byte $5,$8
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.byte $aa,$7a,$57,$75,$aa
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.byte $0a,$a7,$07,$00,$aa
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.byte $00,$aa,$00,$77,$aa
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.byte $aa,$55,$10,$77,$7a
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.byte $aa,$aa,$00,$00,$a7
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.byte $aa,$aa,$55,$77,$aa
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.byte $aa,$aa,$a5,$07,$aa
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.byte $aa,$0a,$00,$00,$aa
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alien_yelling_2:
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.byte $5,$8
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.byte $aa,$7a,$57,$75,$aa
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.byte $00,$77,$07,$00,$aa
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.byte $0a,$5a,$00,$77,$aa
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.byte $aa,$a5,$10,$77,$7a
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.byte $aa,$aa,$00,$00,$a7
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.byte $aa,$aa,$55,$77,$aa
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.byte $aa,$aa,$a5,$07,$aa
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.byte $aa,$0a,$00,$00,$aa
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;=====================
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;=====================
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; SHOOTING UPWARD
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;=====================
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;=====================
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alien_shoot_up_progression:
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.word alien_shooting_up_sprite
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.word alien_shooting_up_sprite
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.word alien_yelling_1
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.word alien_yelling_2
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alien_shooting_up_sprite:
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.byte $5,$8
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.byte $00,$7a,$57,$75,$aa
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.byte $00,$77,$07,$00,$aa
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.byte $55,$aa,$00,$77,$aa
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.byte $aa,$55,$10,$77,$7a
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.byte $aa,$aa,$00,$00,$a7
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.byte $aa,$aa,$55,$77,$aa
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.byte $aa,$aa,$a5,$07,$aa
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.byte $aa,$0a,$00,$00,$aa
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