trogdor: sprites
This commit is contained in:
Vince Weaver
parent
68306e1533
commit
d4219e75e3
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@ -136,7 +136,8 @@ TROGDOR: trogdor.o
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trogdor.o: trogdor.s \
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zp.inc hardware.inc qload.inc \
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graphics/trog00_trogdor.hgr.zx02
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graphics/trog00_trogdor.hgr.zx02 \
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hgr_sprite_big_mask.s
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ca65 -o trogdor.o trogdor.s -l trogdor.lst
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@ -18,7 +18,21 @@ all: \
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trog10_peasants.hgr.zx02 \
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trog11_cottage.hgr.zx02 \
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a2_strongbad.hgr.zx02 \
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trogdor.hgr.zx02
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trogdor.hgr.zx02 \
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flame_sprites.inc
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####
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flame_sprites.inc: compact_flames.png
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$(HGR_SPRITE) -s -l left_flame_small ./compact_flames.png 0 8 55 48 > flame_sprites.inc
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$(HGR_SPRITE) -s -l right_flame_small ./compact_flames.png 56 8 111 48 >> flame_sprites.inc
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$(HGR_SPRITE) -s -l left_flame_big ./compact_flames.png 0 54 55 192 >> flame_sprites.inc
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$(HGR_SPRITE) -s -l right_flame_big ./compact_flames.png 56 54 111 192 >> flame_sprites.inc
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$(HGR_SPRITE) -s -l left_flame_small_mask ./compact_flames.png 112 8 167 48 >> flame_sprites.inc
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$(HGR_SPRITE) -s -l right_flame_small_mask ./compact_flames.png 168 8 223 48 >> flame_sprites.inc
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$(HGR_SPRITE) -s -l left_flame_big_mask ./compact_flames.png 112 54 167 192 >> flame_sprites.inc
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$(HGR_SPRITE) -s -l right_flame_big_mask ./compact_flames.png 168 54 223 192 >> flame_sprites.inc
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####
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Binary file not shown.
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After Width: | Height: | Size: 18 KiB |
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@ -1,205 +0,0 @@
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;===========================================
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; hgr draw sprite (only at 7-bit boundaries)
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;===========================================
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; can handle sprites bigger than a 256 byte page
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; Note this is optimized for blue/orange sprites
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; it treats black0 as transparent
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; SPRITE in INL/INH
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; Location at SPRITE_X SPRITE_Y
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; xsize, ysize in first two bytes
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; sprite AT INL/INH
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; orange = color5 1 101 0101 1 010 1010
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hgr_draw_sprite_big:
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lda SPRITE_X
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ror
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bcs hgr_draw_sprite_big_odd
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hgr_draw_sprite_big_even:
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ldy #0
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lda (INL),Y ; load xsize
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clc
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adc SPRITE_X
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sta big_sprite_width_end_smc+1 ; self modify for end of line
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iny ; load ysize
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lda (INL),Y
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sta big_sprite_ysize_smc+1 ; self modify
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; point smc to sprite
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lda INL ; 16-bit add
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sta big_sprite_smc1+1
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lda INH
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sta big_sprite_smc1+2
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ldx #0 ; X is pointer offset
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stx CURRENT_ROW ; actual row
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ldx #2
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hgr_big_sprite_yloop:
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lda CURRENT_ROW ; row
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clc
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adc SPRITE_Y ; add in cursor_y
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; calc GBASL/GBASH
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tay ; get output ROW into GBASL/H
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lda hposn_low,Y
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sta GBASL
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lda hposn_high,Y
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clc
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adc DRAW_PAGE
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sta GBASH
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ldy SPRITE_X
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big_sprite_inner_loop:
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big_sprite_smc1:
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lda $f000,X ; load sprite data
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beq big_sprite_transparent
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sta (GBASL),Y ; store to screen
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big_sprite_transparent:
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inx ; increment sprite offset
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; if > 1 page
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bne big_sprite_no_page_cross
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inc big_sprite_smc1+2
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big_sprite_no_page_cross:
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iny ; increment output position
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big_sprite_width_end_smc:
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cpy #6 ; see if reached end of row
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bne big_sprite_inner_loop ; if not, loop
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inc CURRENT_ROW ; row
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lda CURRENT_ROW ; row
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big_sprite_ysize_smc:
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cmp #31 ; see if at end
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bne hgr_big_sprite_yloop ; if not, loop
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rts
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hgr_draw_sprite_big_odd:
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ldy #0
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lda (INL),Y ; load xsize
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clc
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adc SPRITE_X
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sta osprite_width_end_smc+1 ; self modify for end of line
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iny ; load ysize
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lda (INL),Y
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sta osprite_ysize_smc+1 ; self modify
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; point smc to sprite
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lda INL ; 16-bit add
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sta osprite_smc1+1
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lda INH
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sta osprite_smc1+2
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ldx #0 ; X is pointer offset
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stx CURRENT_ROW ; actual row
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ldx #2
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ohgr_sprite_yloop:
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lda CURRENT_ROW ; row
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clc
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adc SPRITE_Y ; add in cursor_y
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; calc GBASL/GBASH
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tay ; get output ROW into GBASL/H
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lda hposn_low,Y
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sta GBASL
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lda hposn_high,Y
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clc
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adc DRAW_PAGE
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sta GBASH
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ldy SPRITE_X
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clc
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php ; store 0 carry on stack
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osprite_inner_loop:
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osprite_smc1:
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lda $f000,X ; load sprite data
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bne osprite_not_transparent
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; we can't just skip if 0 because we might shift a bit in
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; from previous byte
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plp
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bcs osprite_oops
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clc
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php
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bcc osprite_transparent_done
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osprite_not_transparent:
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plp ; restore carry from last
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osprite_oops:
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rol ; rotate in carry
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asl ; one more time, bit6 in carry
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php ; save on stack
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sec ; assume blur/orange
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ror ; rotate it back down
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sta (GBASL),Y ; store to screen
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osprite_transparent_done:
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inx ; increment sprite offset
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; if > 1 page
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bne osprite_no_page_cross
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inc osprite_smc1+2
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osprite_no_page_cross:
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iny ; increment output position
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osprite_width_end_smc:
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cpy #6 ; see if reached end of row
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bne osprite_inner_loop ; if not, loop
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plp ; restore stack
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inc CURRENT_ROW ; row
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lda CURRENT_ROW ; row
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osprite_ysize_smc:
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cmp #31 ; see if at end
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bne ohgr_sprite_yloop ; if not, loop
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rts
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@ -0,0 +1,102 @@
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;===========================================
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; hgr draw sprite (only at 14-bit boundaries)
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;===========================================
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; can handle sprites bigger than a 256 byte page
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; flames are 8x142 or so
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; SPRITE in INL/INH
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; MASK in MASKL/MASKH
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; Location at SPRITE_X SPRITE_Y
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; xsize, ysize in first two bytes
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hgr_draw_sprite_big_mask:
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; lda SPRITE_X
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ldy #0
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lda (INL),Y ; load xsize
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clc
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adc SPRITE_X
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sta big_sprite_width_end_smc+1 ; self modify for end of line
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iny ; load ysize
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lda (INL),Y
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sta big_sprite_ysize_smc+1 ; self modify
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; point smc to sprite
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lda INL ; 16-bit add
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sta big_sprite_smc1+1
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lda INH
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sta big_sprite_smc1+2
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; point to mask
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lda MASKL
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sta big_sprite_mask_smc1+1
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lda MASKH
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sta big_sprite_mask_smc1+2
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ldx #0 ; X is pointer offset
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stx CURRENT_ROW ; actual row
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ldx #2
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hgr_big_sprite_yloop:
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lda CURRENT_ROW ; row
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clc
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adc SPRITE_Y ; add in cursor_y
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; calc GBASL/GBASH
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tay ; get output ROW into GBASL/H
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lda hposn_low,Y
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sta GBASL
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lda hposn_high,Y
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clc
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adc DRAW_PAGE
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sta GBASH
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ldy SPRITE_X
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big_sprite_inner_loop:
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lda (GBASL),Y
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big_sprite_mask_smc1:
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and $f000,X
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big_sprite_smc1:
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ora $f000,X ; load sprite data
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sta (GBASL),Y ; store to screen
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inx ; increment sprite offset
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; if > 1 page
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bne big_sprite_no_page_cross
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inc big_sprite_smc1+2
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inc big_sprite_mask_smc1+2
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big_sprite_no_page_cross:
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iny ; increment output position
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big_sprite_width_end_smc:
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cpy #6 ; see if reached end of row
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bne big_sprite_inner_loop ; if not, loop
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inc CURRENT_ROW ; row
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lda CURRENT_ROW ; row
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big_sprite_ysize_smc:
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cmp #31 ; see if at end
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bne hgr_big_sprite_yloop ; if not, loop
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rts
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@ -178,7 +178,7 @@ sector_array:
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.byte 0,0,0 ; MUSIC, TROGDOR, TITLE
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length_array:
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.byte 32,32 ; MUSIC, TROGDOR, TITLE
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.byte 32,64,32 ; MUSIC, TROGDOR, TITLE
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PT3_ENABLE_APPLE_IIC = 1
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@ -24,6 +24,9 @@ trogdor_main:
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; draw opening scene
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;======================================
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lda #$0
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sta DRAW_PAGE
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lda #<trog00_graphics
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sta zx_src_l+1
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lda #>trog00_graphics
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@ -36,6 +39,48 @@ trogdor_main:
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bit FULLGR
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bit PAGE1
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jsr wait_until_keypress
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; draw left flame
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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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sta MASKH
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lda #8
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sta SPRITE_X
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lda #152
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sta SPRITE_Y
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jsr hgr_draw_sprite_big_mask
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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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lda #24
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sta SPRITE_X
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lda #54
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sta SPRITE_Y
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jsr hgr_draw_sprite_big_mask
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jsr wait_until_keypress
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; second
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@ -83,3 +128,9 @@ trog03_graphics:
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.include "irq_wait.s"
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hposn_low = $1e00
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hposn_high = $1f00
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.include "hgr_sprite_big_mask.s"
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.include "graphics/flame_sprites.inc"
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@ -127,94 +127,12 @@ MASKL = $EC ; gr_putsprite_mask
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MASKH = $ED
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FRAME = $EE
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;==============================================
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; $F0-$FB can re-use in each file
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;==============================================
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; tunnel
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XX = $F2
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MINUSXX = $F3
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YY = $F4
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MINUSYY = $F5
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D = $F6
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R = $F7
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CX = $F8
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CY = $F9
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RR = $FA
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; Credits
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BACKUP_OUTL = $F2
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BACKUP_OUTH = $F3
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; Nuts/ opener
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; local
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SPRITE_Y = $F2
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SPRITE_X = $F3
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CURRENT_ROW = $F4
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; PLASMACUBE
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OUT1 = $F0
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OUT1H = $F1
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OUT2 = $F2
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OUT2H = $F3
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COMPT1 = $F4
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COMPT2 = $F5
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PARAM1 = $F6
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PARAM2 = $F7
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PARAM3 = $F8
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PARAM4 = $F9
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GRLINE = $FA
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GRLINEH = $FB
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; PLASMA
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; CUBE
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SAVEX = $F3
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SAVEY = $F4
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SUM = $F5
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; CIRCLES/DRAW_BOXES
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COLOR2 = $F3
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X1 = $F4
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X2 = $F5
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Y1 = $F6
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Y2 = $F7
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SCENE_COUNT = $F8
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LAST_TYPE = $F9
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; lens
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LENS_X = $F0
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LENS_Y = $F1
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XADD = $F2
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YADD = $F3
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; rotozoom
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NUM1L = $F0
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NUM1H = $F1
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NUM2L = $F2
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NUM2H = $F3
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RESULT = $F4 ; F5,F6,F7
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SCALE_I = $F8
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SCALE_F = $F9
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ANGLE = $FA
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; credits
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SCROLL_X = $F0
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; polar
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SCROLL_START = $F0
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YDEST = $F1
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; hgr_copy
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HGR_COPY_Y1 = $F1
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HGR_COPY_Y2 = $F2
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FIRE_COLOR = $F3
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SCROLL_LENGTH = $F4
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OFFSET = $F5
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TREE_COUNT = $F6
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;==============================================
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; $FC-$FF we use for in/out pointers
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