mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-06-09 07:29:32 +00:00
107 lines
1.6 KiB
ArmAsm
107 lines
1.6 KiB
ArmAsm
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do_letters:
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;=========================================
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; SETUP
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;=========================================
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jsr HGR2 ; set/clear HGR page2 to black
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; Hi-res graphics, no text at bottom
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; Y=0, A=$60 after this call
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;==============================
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; print deater
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lda #28 ; y position
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sta YPOS
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; lda #$ff ; start on right hand side
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; sta start_smc+1 ; default
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; lda #$fc ; movement size to add
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; sta add_smc+1 ;
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; lda #<desire_ends+1 ; default
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; sta type_smc+1
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; lda #<deater_offsets ; default
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; sta offsets_smc+1
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jsr slide_in
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;==============================
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; print maze
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lda #28 ; start on left hand side
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sta start_smc+1
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lda #4 ; movement size to add
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sta add_smc+1
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lda #128 ; Y location
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sta YPOS
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lda #<ma2e_ends ; point to the end table
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sta type_smc+1
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lda #<ma2e_offsets ; point to the shape offset
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sta offsets_smc+1
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jsr slide_in ; slide it
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; jsr zoom_in ; just fall through
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; A is $FF here
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;=========================
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; zoom in
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;=========================
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zoom_in:
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lda #0 ; reset rotate and pointer
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sta ROTATE
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sta WHICH
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outer_zoom_loop:
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lda WHICH
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tax ; update offset
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lda desire_offsets,X ; get offsets in place
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sta xdraw_offset_smc+1 ; setup xdraw
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bmi done2 ; if negative, done
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lda #36 ; start big
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sta HGR_SCALE
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lda desire_ends,X ; X Position
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sta XPOS
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lda #76 ; Y position
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sta YPOS
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inner_zoom_loop:
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jsr draw_wait_erase
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dec HGR_SCALE ; zoom in
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dec HGR_SCALE
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lda HGR_SCALE
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cmp #10 ; stop if big enough
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bcs inner_zoom_loop
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jsr xdraw ; leave it on screen
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inc WHICH ; move to next letter
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bpl outer_zoom_loop ; bra
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done2:
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