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Level selection menu: entry transition events (#12) (#35) [commit 4/4]

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xCrystal
2024-02-04 14:23:58 +01:00
parent d3b397fd37
commit 5005ca7bd0
7 changed files with 185 additions and 12 deletions
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8
macros/gfx.asm
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@@ -41,14 +41,14 @@ MACRO rgbpals_fade_apply
DEF fade_from EQUS \1
DEF fade_to EQUS \2
assert {fade_from}_len == {fade_to}_len, "fade_from pals and fade_to pals must be same length"
for i, \3
for i, 0, \3
for j, 0, {fade_from}_len, 3
DEF rgbch_red = {j} + 0
DEF rgbch_green = {j} + 1
DEF rgbch_blue = {j} + 2
DEF palred_value = {fade_from}_{d:rgbch_red} + ({fade_to}_{d:rgbch_red} - {fade_from}_{d:rgbch_red}) * i / \3
DEF palgreen_value = {fade_from}_{d:rgbch_green} + ({fade_to}_{d:rgbch_green} - {fade_from}_{d:rgbch_green}) * i / \3
DEF palblue_value = {fade_from}_{d:rgbch_blue} + ({fade_to}_{d:rgbch_blue} - {fade_from}_{d:rgbch_blue}) * i / \3
DEF palred_value = {fade_from}_{d:rgbch_red} + ({fade_to}_{d:rgbch_red} - {fade_from}_{d:rgbch_red}) * (i + 1) / (\3 + 1)
DEF palgreen_value = {fade_from}_{d:rgbch_green} + ({fade_to}_{d:rgbch_green} - {fade_from}_{d:rgbch_green}) * (i + 1) / (\3 + 1)
DEF palblue_value = {fade_from}_{d:rgbch_blue} + ({fade_to}_{d:rgbch_blue} - {fade_from}_{d:rgbch_blue}) * (i + 1) / (\3 + 1)
dw palred (palred_value) + palgreen (palgreen_value) + palblue (palblue_value)
endr
endr