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fox32rom: Add routines for drawing decimal values

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This commit is contained in:
ry755 2022-02-21 22:07:02 -08:00 committed by Ry
parent a7ccb2167e
commit f17a15b14a
5 changed files with 126 additions and 9 deletions
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30
background.asm
View File

@ -96,3 +96,33 @@ draw_str_to_background_loop:
pop r5
pop r0
ret
; draw a decimal value to the background
; inputs:
; r0: value
; r1: X coordinate
; r2: Y coordinate
; r3: foreground color
; r4: background color
; outputs:
; r1: X coordinate of end of text
draw_decimal_to_background:
push r5
push r6
push r7
push r8
push r9
mov r5, standard_font_data
movz.16 r6, [standard_font_width]
movz.16 r7, [standard_font_height]
mov r8, BACKGROUND_FRAMEBUFFER
mov r9, 640
call draw_decimal_generic
pop r9
pop r8
pop r7
pop r6
pop r5
ret

46
draw_text.asm
View File

@ -109,3 +109,49 @@ draw_str_generic_loop:
pop r10
pop r0
ret
; draw a decimal value to a framebuffer
; inputs:
; r0: value
; r1: X coordinate
; r2: Y coordinate
; r3: foreground color
; r4: background color
; r5: pointer to font graphics
; r6: font width
; r7: font height
; r8: pointer to framebuffer
; r9: framebuffer width
; outputs:
; r1: X coordinate of end of text
draw_decimal_generic:
push r0
push r10 ; r10: original stack pointer
push r11 ; temp 1
push r12 ; temp 2
push r13 ; temp 3
mov r10, rsp
mov r12, r0
push.8 0x00 ; end the string with a terminator
draw_decimal_generic_find_loop:
push r12
div r12, 10 ; quotient goes into r12
pop r13
rem r13, 10 ; remainder goes into r13
mov r11, r13
add r11, '0'
push.8 r11
cmp r12, 0
ifnz jmp draw_decimal_generic_find_loop
draw_decimal_generic_print:
mov r0, rsp ; point to start of string in the stack
call draw_str_generic
mov rsp, r10
pop r13
pop r12
pop r11
pop r10
pop r0
ret

21
fox32rom.def
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@ -10,23 +10,26 @@ get_next_event: jmp [0xF0040014]
; generic drawing jump table
draw_str_generic: jmp [0xF0041000]
draw_font_tile_generic: jmp [0xF0041004]
draw_filled_rectangle_generic: jmp [0xF0041008]
draw_decimal_generic: jmp [0xF0041004]
draw_font_tile_generic: jmp [0xF0041008]
draw_filled_rectangle_generic: jmp [0xF004100C]
; background jump table entries
fill_background: jmp [0xF0042000]
draw_str_to_background: jmp [0xF0042004]
draw_font_tile_to_background: jmp [0xF0042008]
draw_filled_rectangle_to_background: jmp [0xF004200C]
draw_decimal_to_background: jmp [0xF0042008]
draw_font_tile_to_background: jmp [0xF004200C]
draw_filled_rectangle_to_background: jmp [0xF0042010]
; overlay jump table entries
fill_overlay: jmp [0xF0043000]
draw_str_to_overlay: jmp [0xF0043004]
draw_font_tile_to_overlay: jmp [0xF0043008]
draw_filled_rectangle_to_overlay: jmp [0xF004300C]
find_overlay_covering_position: jmp [0xF0043010]
check_if_overlay_covers_position: jmp [0xF0043014]
check_if_enabled_overlay_covers_position: jmp [0xF0043018]
draw_decimal_to_overlay: jmp [0xF0043008]
draw_font_tile_to_overlay: jmp [0xF004300C]
draw_filled_rectangle_to_overlay: jmp [0xF0043010]
find_overlay_covering_position: jmp [0xF0043014]
check_if_overlay_covers_position: jmp [0xF0043018]
check_if_enabled_overlay_covers_position: jmp [0xF004301C]
; menu bar jump table entries
menu_bar_click_event: jmp [0xF0044000]

3
main.asm
View File

@ -201,6 +201,7 @@ get_rom_version:
; generic drawing jump table
org.pad 0xF0041000
data.32 draw_str_generic
data.32 draw_decimal_generic
data.32 draw_font_tile_generic
data.32 draw_filled_rectangle_generic
@ -208,6 +209,7 @@ get_rom_version:
org.pad 0xF0042000
data.32 fill_background
data.32 draw_str_to_background
data.32 draw_decimal_to_background
data.32 draw_font_tile_to_background
data.32 draw_filled_rectangle_to_background
@ -215,6 +217,7 @@ get_rom_version:
org.pad 0xF0043000
data.32 fill_overlay
data.32 draw_str_to_overlay
data.32 draw_decimal_to_overlay
data.32 draw_font_tile_to_overlay
data.32 draw_filled_rectangle_to_overlay
data.32 find_overlay_covering_position

35
overlay.asm
View File

@ -121,6 +121,41 @@ draw_str_to_overlay_loop:
pop r0
ret
; draw a decimal value to an overlay
; inputs:
; r0: value
; r1: X coordinate
; r2: Y coordinate
; r3: foreground color
; r4: background color
; outputs:
; r1: X coordinate of end of text
draw_decimal_to_overlay:
push r5
push r6
push r7
push r8
push r9
mov r6, r5
or r6, 0x80000100 ; bitwise or the overlay number with the command to get the overlay size
or r5, 0x80000200 ; bitwise or the overlay number with the command to get the framebuffer pointer
in r8, r5 ; r8: overlay framebuffer poiner
in r9, r6
and r9, 0x0000FFFF ; r9: overlay width
mov r5, standard_font_data
movz.16 r6, [standard_font_width]
movz.16 r7, [standard_font_height]
call draw_decimal_generic
pop r9
pop r8
pop r7
pop r6
pop r5
ret
; finds the overlay with the highest priority covering the specified position
; does not check overlay 31, which is always the mouse pointer
; inputs: