mirror of
https://github.com/bryanthaboi/gen1recomp
synced 2026-09-26 13:33:27 -04:00
bryanthaboi
84 lines
2.6 KiB
Lua
84 lines
2.6 KiB
Lua
-- engine/battle_anims/bg_effects.asm:1108 (#1921)
|
|
|
|
package.path = "./?.lua;./?/init.lua;" .. package.path
|
|
|
|
love = require("tests.love_stub")
|
|
|
|
local T = require("tests.harness")
|
|
local BgEffects = require("src.battle.gen2.BgEffects")
|
|
local BattleAnimView = require("src.ui.gen2.BattleAnimView")
|
|
|
|
local SCREEN_H = BattleAnimView.SCREEN_H
|
|
|
|
-- data/moves/animations.asm:2618 BattleAnim_NightShade:
|
|
local bg = BgEffects.new({}, { battleTurn = 0 })
|
|
bg:queue("BATTLE_BG_EFFECT_NIGHT_SHADE", 0, 0, 0x8)
|
|
bg:playFrame()
|
|
T.eq(bg.lcdc, "SCY", "Night Shade wobbles the target vertically")
|
|
T.eq(bg.lyStart, 0x00, "and the enemy window starts at scanline 0")
|
|
T.eq(bg.lyEnd, 0x36, "running to $36")
|
|
|
|
local negatives, gaps, duplicates = 0, 0, 0
|
|
for _ = 1, 16 do
|
|
bg:playFrame()
|
|
for row = bg.lyStart, bg.lyEnd - 1 do
|
|
local byte = bg.lyBackup[row] or 0
|
|
if byte >= 0x80 and row + (byte - 0x100) < 0 then
|
|
negatives = negatives + 1
|
|
end
|
|
end
|
|
local seen = {}
|
|
for _, line in ipairs(BattleAnimView.scanlines(bg)) do
|
|
if seen[line.dest] then duplicates = duplicates + 1 end
|
|
seen[line.dest] = true
|
|
end
|
|
for row = bg.lyStart + 1, bg.lyEnd do
|
|
if not seen[row] then gaps = gaps + 1 end
|
|
end
|
|
end
|
|
T.check(negatives > 0, "the wave really does push the top rows off the panel")
|
|
T.eq(gaps, 0, "but no window scanline is ever left blank")
|
|
T.eq(duplicates, 0, "and none is drawn twice")
|
|
|
|
local function panel(fields)
|
|
local out = { scx = 0, scy = 0, lyStart = 0, lyEnd = 0x36, lyBackup = {},
|
|
lcdc = "SCY" }
|
|
for k, v in pairs(fields) do out[k] = v end
|
|
return out
|
|
end
|
|
|
|
local function byRow(lines)
|
|
local map = {}
|
|
for _, line in ipairs(lines) do map[line.dest] = line end
|
|
return map
|
|
end
|
|
|
|
do
|
|
local lines = byRow(BattleAnimView.scanlines(panel({
|
|
lyBackup = { [0] = 0xfe, [1] = 0xfd } })))
|
|
T.eq(lines[1] and lines[1].src, 0, "an rSCY of -2 stored on LY 0 holds row 0")
|
|
T.eq(lines[2] and lines[2].src, 0, "and -3 stored on LY 1 holds it too")
|
|
end
|
|
|
|
do
|
|
local lines = byRow(BattleAnimView.scanlines(panel({
|
|
lyEnd = SCREEN_H, lyBackup = { [SCREEN_H - 2] = 4 } })))
|
|
T.eq(lines[SCREEN_H - 1] and lines[SCREEN_H - 1].src, SCREEN_H - 1,
|
|
"a wobble past the bottom of the panel holds the last row")
|
|
end
|
|
|
|
do
|
|
local lines = byRow(BattleAnimView.scanlines(panel({
|
|
lyBackup = { [0] = 0x90 } })))
|
|
T.eq(lines[1], nil, "the $90 displacement still sinks its row into blank")
|
|
end
|
|
|
|
do
|
|
local lines = byRow(BattleAnimView.scanlines(panel({
|
|
scy = 4, lcdc = nil, lyEnd = 0 })))
|
|
T.eq(lines[SCREEN_H - 1], nil,
|
|
"and a whole-screen hSCY shake still leaves the bottom rows blank")
|
|
end
|
|
|
|
T.finish("gen2 night shade top row bug 1921")
|