BizHawk/Assets/Lua/SNES/Megaman X3.lua

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--Author Pasky13
-- Some bogus boxes may appear
-- because background objects are
-- sometimes used where enemy structures
-- are present in memory.
---------------
----GLOBALS----
---------------
local pbase = 0x9D8
local px = pbase +0x5
local py = pbase +0x8
local cx = 0x1E5D
local cy = 0x1E60
local xm
local ym
---------------
----TOGGLES----
---------------
local draw_megaman = true
local draw_enemies = true
local draw_hpvalues = true
local draw_projectiles = true
memory.usememorydomain("CARTROM")
local function megaman()
local camx = mainmemory.read_u16_le(cx)
local camy = mainmemory.read_u16_le(cy)
local x = mainmemory.read_u16_le(px) - camx
local y = mainmemory.read_u16_le(py) - camy
local facing = mainmemory.read_u8(pbase + 0x11)
local boxpointer = mainmemory.read_u16_le(pbase + 0x20) + 0x28000
local xoff = memory.read_s8(boxpointer + 0)
local yoff = memory.read_s8(boxpointer + 1)
local xrad = memory.read_u8(boxpointer + 2)
local yrad = memory.read_u8(boxpointer + 3)
if facing > 0x45 then
xoff = xoff * -1
end
gui.drawBox(x + xoff +xrad,y + yoff + yrad, x + xoff - xrad, y + yoff - yrad,0xFF0000FF,0x400000FF)
end
local function enemies()
local x
local xoff
local xrad
local y
local yoff
local yrad
local camx = mainmemory.read_u16_le(cx)
local camy = mainmemory.read_u16_le(cy)
local base
local boxpointer
local facing
local fill
local outl
local start = 0xD18
local oend = 31
for i = 0, oend,1 do
base = start + (i * 0x40)
if i == 0 then
base = start
end
if mainmemory.read_u8(base) ~= 0 and mainmemory.read_u8(base + 0x27) ~= 128 then
if i > 14 and i < 25 then
if draw_projectiles == true then
fill = 0x40FFFFFF
outl = 0xFFFFFFFF
else
fill = 0x00000000
outl = 0x00000000
end
else
fill = 0x40FF0000
outl = 0xFFFF0000
end
if i > 23 then
fill = 0x40FFFF00
outl = 0xFFFFFF00
end
facing = mainmemory.read_u8(base + 0x11)
x = mainmemory.read_u16_le(base + 5) - camx
y = mainmemory.read_u16_le(base + 8) - camy
boxpointer = mainmemory.read_u16_le(base +0x20) + 0x28000
xoff = memory.read_s8(boxpointer + 0)
yoff = memory.read_s8(boxpointer + 1)
xrad = memory.read_u8(boxpointer + 2)
yrad = memory.read_u8(boxpointer + 3)
if facing > 0x45 then
xoff = xoff * -1
end
--gui.text(x,y,string.format("%X",base)) -- Debug
gui.drawBox(x + xoff +xrad,y + yoff + yrad, x + xoff - xrad, y + yoff - yrad,outl, fill)
if draw_hpvalues == true and mainmemory.read_u8(base+0x27) > 0 and mainmemory.read_u8(base+0x27) ~= 128 then
if i < 15 or i > 20 then
gui.text((x-5) * xm,(y-5) * ym,"HP: " .. mainmemory.read_u8(base+0x27))
end
end
end
end
end
local function scaler()
xm = client.screenwidth() / 256
ym = client.screenheight() / 224
end
while true do
scaler()
if draw_megaman == true then
megaman()
end
if draw_enemies == true then
enemies()
end
emu.frameadvance()
end