336 lines
4.6 KiB
ArmAsm
336 lines
4.6 KiB
ArmAsm
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;======================================
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; do_flames
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;======================================
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; copy background from $6000, left
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; then do the following pattern
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; s=short, 1=tall_1 2=tall_2, b=both short
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; flames: left: ss1122
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; flames: bb
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; flames: right 22112211ss
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; flames: left ss11221122ss
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; FLAME_L = X of left flame
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; FLAME_R = X of right flame
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; FLAME_BG = type of background
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; 0 = blank white
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; 1 = blank_white + left_copy
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; 2 = blank_white + right_copy
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do_flames:
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; this gets set to 1 if bg being copied
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lda #2
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sta FLAME_DELAY
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;======================================
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; left flame short 2 frames
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jsr draw_flame_bg
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ldx FLAME_L
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jsr draw_flame_small_1
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jsr hgr_page_flip
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lda FLAME_DELAY
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jsr wait_ticks
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;=================================================
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; left tall 1212 roughly 10 frames (1/2 s)
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lda #2
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sta ANIMATE_COUNT
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left_flame_animate1:
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; 1
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jsr draw_flame_bg
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ldx FLAME_L
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jsr draw_flame_tall_1
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jsr hgr_page_flip
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lda FLAME_DELAY
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jsr wait_ticks
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; 2
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jsr draw_flame_bg
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ldx FLAME_L
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jsr draw_flame_tall_2
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jsr hgr_page_flip
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lda FLAME_DELAY
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jsr wait_ticks
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dec ANIMATE_COUNT
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bne left_flame_animate1
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;==============================
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; both short 2 frames
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jsr draw_flame_bg
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ldx FLAME_L
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jsr draw_flame_small_1
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ldx FLAME_R
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jsr draw_flame_small_1
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jsr hgr_page_flip
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lda FLAME_DELAY
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jsr wait_ticks
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;===========================================
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; right tall 1212 roughly 10 frames
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lda #2
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sta ANIMATE_COUNT
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right_flame_animate1:
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; 2
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jsr draw_flame_bg
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ldx FLAME_R
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jsr draw_flame_tall_2
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jsr hgr_page_flip
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lda FLAME_DELAY
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jsr wait_ticks
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; 1
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jsr draw_flame_bg
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ldx FLAME_R
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jsr draw_flame_tall_1
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jsr hgr_page_flip
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lda FLAME_DELAY
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jsr wait_ticks
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dec ANIMATE_COUNT
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bne right_flame_animate1
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;=============================
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; right short 2 frames
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jsr draw_flame_bg
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ldx FLAME_R
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jsr draw_flame_small_2
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jsr hgr_page_flip
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lda FLAME_DELAY
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jsr wait_ticks
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;=============================
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; left short 2 frames
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jsr draw_flame_bg
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ldx FLAME_L
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jsr draw_flame_small_1
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jsr hgr_page_flip
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lda FLAME_DELAY
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jsr wait_ticks
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;================================================
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; left tall 1212 roughly 10 frames (1/2 s)
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lda #2
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sta ANIMATE_COUNT
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left_flame_animate2:
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; 1
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jsr draw_flame_bg
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ldx FLAME_L
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jsr draw_flame_tall_1
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jsr hgr_page_flip
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lda FLAME_DELAY
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jsr wait_ticks
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; 2
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jsr draw_flame_bg
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ldx FLAME_L
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jsr draw_flame_tall_2
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jsr hgr_page_flip
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lda FLAME_DELAY
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jsr wait_ticks
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dec ANIMATE_COUNT
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bne left_flame_animate2
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;=============================
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; left short 2 frames
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jsr draw_flame_bg
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ldx FLAME_L
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jsr draw_flame_small_1
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jsr hgr_page_flip
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lda FLAME_DELAY
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jmp wait_ticks ; tail call
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;===============================
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; draw_flame_bg
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;===============================
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draw_flame_bg:
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; clear no matter what
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ldy #$7f
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jsr hgr_clear_screen
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lda FLAME_BG
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beq flame_bg_clear
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cmp #2
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bne flame_bg_left
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flame_bg_right:
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lda #1
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sta FLAME_DELAY
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jmp hgr_copy_right ; tail call
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flame_bg_left:
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lda #1
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sta FLAME_DELAY
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jmp hgr_copy_left ; tail call
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flame_bg_clear:
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rts
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;===============================
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; draw_flame_small
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;===============================
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; x location in X
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draw_flame_small_1:
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lda #<left_flame_small
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sta INL
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lda #>left_flame_small
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sta INH
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lda #<left_flame_small_mask
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sta MASKL
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lda #>left_flame_small_mask
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bne draw_flame_small_common ; bra
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draw_flame_small_2:
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lda #<left_flame_small
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sta INL
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lda #>left_flame_small
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sta INH
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lda #<left_flame_small_mask
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sta MASKL
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lda #>left_flame_small_mask
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draw_flame_small_common:
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sta MASKH
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txa
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sta SPRITE_X
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lda #152
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sta SPRITE_Y
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jmp hgr_draw_sprite_big_mask ; tail call
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;===============================
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; draw_flame_tall
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;===============================
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; X location in X
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draw_flame_tall_1:
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lda #<left_flame_big
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sta INL
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lda #>left_flame_big
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sta INH
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lda #<left_flame_big_mask
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sta MASKL
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lda #>left_flame_big_mask
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sta MASKH
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bne draw_left_flame_common ; bra
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draw_flame_tall_2:
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; draw right flame
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lda #<right_flame_big
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sta INL
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lda #>right_flame_big
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sta INH
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lda #<right_flame_big_mask
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sta MASKL
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lda #>right_flame_big_mask
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sta MASKH
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draw_left_flame_common:
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txa
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sta SPRITE_X
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lda #54
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sta SPRITE_Y
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jmp hgr_draw_sprite_big_mask ; tail call
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;===================================
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; twin flames tall
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draw_twin_flames_tall_1:
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ldx #4
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jsr draw_flame_tall_1
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ldx #28
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jmp draw_flame_tall_2 ; tail call
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draw_twin_flames_tall_2:
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ldx #4
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jsr draw_flame_tall_2
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ldx #28
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jmp draw_flame_tall_1 ; tail call
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;===================================
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; twin flames low
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draw_twin_flames_low:
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ldx #4
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jsr draw_flame_small_1
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ldx #28
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jmp draw_flame_small_2 ; tail call
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