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#22071035560534321 - NES Krazy Kreatures - FCEUX lua script

KrazyKreatures_FCEUX.lua
695 downloads
Uploaded 4/12/2015 10:58 PM by FatRatKnight (see all 245)
Can't let my work finding out a few memory addresses go to waste.
This script attempts to identify where the objects are going to land, what's currently filling the slots, and the up-to-date player positions. For whatever reason, I've also identified P1 and cooperative scores. Of unusual note, "clear" and nil are used, as nil in FCEUX's gui.box fill just happens to select out a translucent shade that looks perfect for what I need. An accident gone right.
An FCEUX script, which I find its emulation isn't enough for Krazy Kreatures. Nuts, I say. Still, translating a script to BizHawk is probably easier than rediscovering the memory addresses from scratch.
--*****************************************************************************
local Draw= {}
--*****************************************************************************
--Coordinates is the top-left pixel of the 3x5 digit.
--Used for drawing compact, colored numbers.

local Px,Li= gui.pixel, gui.line

Draw[0]= function(x,y,c) -- ###
    Li(x  ,y  ,x  ,y+4,c)-- # #
    Li(x+2,y  ,x+2,y+4,c)-- # #
    Px(x+1,y  ,c)        -- # #
    Px(x+1,y+4,c)        -- ###
end

Draw[1]= function(x,y,c) --  #
    Li(x  ,y+4,x+2,y+4,c)-- ##
    Li(x+1,y  ,x+1,y+3,c)--  #
    Px(x  ,y+1,c)        --  #
end                      -- ###

Draw[2]= function(x,y,c) -- ###
    Li(x  ,y  ,x+2,y  ,c)--   #
    Li(x  ,y+3,x+2,y+1,c)-- ###
    Li(x  ,y+4,x+2,y+4,c)-- #
    Px(x  ,y+2,c)        -- ###
    Px(x+2,y+2,c)
end

Draw[3]= function(x,y,c) -- ###
    Li(x  ,y  ,x+1,y  ,c)--   #
    Li(x  ,y+2,x+1,y+2,c)-- ###
    Li(x  ,y+4,x+1,y+4,c)--   #
    Li(x+2,y  ,x+2,y+4,c)-- ###
end

Draw[4]= function(x,y,c) -- # #
    Li(x  ,y  ,x  ,y+2,c)-- # #
    Li(x+2,y  ,x+2,y+4,c)-- ###
    Px(x+1,y+2,c)        --   #
end                      --   #

Draw[5]= function(x,y,c) -- ###
    Li(x  ,y  ,x+2,y  ,c)-- #
    Li(x  ,y+1,x+2,y+3,c)-- ###
    Li(x  ,y+4,x+2,y+4,c)--   #
    Px(x  ,y+2,c)        -- ###
    Px(x+2,y+2,c)
end

Draw[6]= function(x,y,c) -- ###
    Li(x  ,y  ,x+2,y  ,c)-- #
    Li(x  ,y+1,x  ,y+4,c)-- ###
    Li(x+2,y+2,x+2,y+4,c)-- # #
    Px(x+1,y+2,c)        -- ###
    Px(x+1,y+4,c)
end
                         -- ###
Draw[7]= function(x,y,c) --   #
    Li(x  ,y  ,x+1,y  ,c)--  ##
    Li(x+2,y  ,x+1,y+4,c)--  #
end                      --  #

Draw[8]= function(x,y,c) -- ###
    Li(x  ,y  ,x  ,y+4,c)-- # #
    Li(x+2,y  ,x+2,y+4,c)-- ###
    Px(x+1,y  ,c)        -- # #
    Px(x+1,y+2,c)        -- ###
    Px(x+1,y+4,c)
end

Draw[9]= function(x,y,c) -- ###
    Li(x  ,y  ,x  ,y+2,c)-- # #
    Li(x+2,y  ,x+2,y+3,c)-- ###
    Li(x  ,y+4,x+2,y+4,c)--   #
    Px(x+1,y  ,c)        -- ###
    Px(x+1,y+2,c)
end

Draw[10]=function(x,y,c) --  #
    Li(x  ,y+1,x  ,y+4,c)-- # #
    Li(x+2,y+1,x+2,y+4,c)-- # #
    Px(x+1,y  ,c)        -- ###
    Px(x+1,y+3,c)        -- # #
end

Draw[11]=function(x,y,c) -- ##
    Li(x  ,y  ,x  ,y+4,c)-- # #
    Li(x+1,y  ,x+2,y+1,c)-- ##
    Li(x+1,y+4,x+2,y+3,c)-- # #
    Px(x+1,y+2,c)        -- ##
end

Draw[12]=function(x,y,c) --  #
    Li(x  ,y+1,x  ,y+3,c)-- # #
    Li(x+1,y  ,x+2,y+1,c)-- #
    Li(x+1,y+4,x+2,y+3,c)-- # #
end                      --  #

Draw[13]=function(x,y,c) -- ##
    Li(x  ,y  ,x  ,y+4,c)-- # #
    Li(x+2,y+1,x+2,y+3,c)-- # #
    Px(x+1,y  ,c)        -- # #
    Px(x+1,y+4,c)        -- ##
end

Draw[14]=function(x,y,c) -- ###
    Li(x  ,y  ,x  ,y+4,c)-- #
    Li(x+1,y  ,x+2,y  ,c)-- ##
    Li(x+1,y+4,x+2,y+4,c)-- #
    Px(x+1,y+2,c)        -- ###
end

Draw[15]=function(x,y,c) -- ###
    Li(x  ,y  ,x  ,y+4,c)-- #
    Li(x+1,y  ,x+2,y  ,c)-- ##
    Px(x+1,y+2,c)        -- #
end                      -- #

--*****************************************************************************
local function __DN_AnyBase(right, y, Number, c, bkgnd, div)
--*****************************************************************************
-- Works with any base from 2 to 16. Paints the input number.
-- Returns the x position where it would paint another digit.
-- It only works with integers. Rounds fractions toward zero.

    if div < 2 then return end  -- Prevents the function from never returning.

    local Digit= {}
    local Negative= false
    if Number < 0 then
        Number= -Number
        Negative= true
    end

    Number= math.floor(Number)
    c= c or "white"
    bkgnd= bkgnd or "clear"

    local i= 0
    if Number < 1 then
        Digit[1]= 0
        i= 1
    end

    while (Number >= 1) do
        i= i+1
        Digit[i]= Number % div
        Number= math.floor(Number/div)
    end

    if Negative then  i= i+1  end
    local x= right - i*4
    gui.box(x+1, y-1, right+1, y+5,bkgnd,bkgnd)

    i= 1
    while Draw[Digit[i]] do
        Draw[Digit[i]](right-2,y,c)
        right= right-4
        i=i+1
    end

    if Negative then
        gui.line(right, y+2,right-2,y+2,c)
        right= right-4
    end
    return right
end
--*****************************************************************************
local function DrawNum(right, y, Number, c, bkgnd)
--*****************************************************************************
-- Paints the input number as right-aligned. Decimal version.
    return __DN_AnyBase(right, y, Number, c, bkgnd, 10)
end
--*****************************************************************************
local function DrawNumx(right, y, Number, c, bkgnd)
--*****************************************************************************
-- Paints the input number as right-aligned. Hexadecimal version.
    return __DN_AnyBase(right, y, Number, c, bkgnd, 16)
end

-------------------------------------------------------------------------------
local R1u,R1s= memory.readbyte, memory.readbytesigned
local R2u,R2s= memory.readword, memory.readwordsigned

--*****************************************************************************
local function DisplayLandings()
--*****************************************************************************
    local c= 0
    for i= 0, 13 do
        local addr= 0x0300 + i
        if R1u(addr) == 3 then
            local loc= R1u(addr+0x10)
            local X,Y= (loc%0x10)*16 +11 , math.floor(loc/0x10)*16 +41
            DrawNumx(X,Y,R1u(addr+0x20),"white","black")
        end
        if R1u(addr) ~= 0 then
            c= c+1
        end
    end
    DrawNum(7,9,c,"white","black")
end

--*****************************************************************************
local function DisplayField()
--*****************************************************************************
    for x= 1, 15 do
        local X= x*16 - 5
        for y= 1, 12 do
            local Y= y*16 +19
            local addr= 0x03D0 + x + y*0x10
            local v= R1u(addr)
            local clr= "green"
            if v >= 0x80 then clr= "grey" end
            if v > 1 then
                DrawNumx(X,Y,v,clr,"black")
            end
        end
    end
end

local plclr= {[0]= "orange","cyan"}
--*****************************************************************************
local function DisplayPlayer()  --An up-to-date box would be lovely, eh?
--*****************************************************************************
    for pl= 0, 1 do
        local loc= R1u(0x00D1 + pl)
        local X,Y= (loc%0x10)*16 , math.floor(loc/0x10)*16 +32
        local clr= "clear"
        if R1u(0x00D3 + pl) ~= 0 then clr= nil end
        gui.box(X,Y,X+15,Y+15,clr,plclr[pl])
    end
end

--*****************************************************************************
local function ObjectStats()
--*****************************************************************************
    for i= 0, 11 do
        local X= 10 + 10*i
        local addr= 0x0300 + i
        local clr= "green"
        if R1u(addr) == 0 then clr= "grey" end
        for j= 0,12 do
            local Y= 9 + 6*j
            DrawNumx(X,Y,R1u(addr+0x10*j),clr,"black")
        end
    end
end

--*****************************************************************************
local function Scoring()
--*****************************************************************************
    gui.box(120,8,144,15,"black","black")
    local v= R1u(0x0154)+R1u(0x0155)*0x100+R1u(0x0156)*0x10000
    for i= 0, 5 do
        local digit= v%16
        Draw[digit](141-4*i,9,"white")
        v= math.floor(v/16)
    end

    gui.box( 40,8, 64,15,"black","black")
    local v= R1u(0x00BA)+R1u(0x00BB)*0x100+R1u(0x00BC)*0x10000
    for i= 0, 5 do
        local digit= v%16
        Draw[digit]( 61-4*i,9,"white")
        v= math.floor(v/16)
    end
end

--*****************************************************************************
local function BasicHUD()
--*****************************************************************************
--    ObjectStats()
    DisplayPlayer()
    DisplayLandings()
    DisplayField()
    Scoring()

    DrawNumx(220, 10,R1u(0x00D1),"orange","black") -- Pos P1
    DrawNumx(230, 10,R1u(0x00D2),"cyan"  ,"black") -- Pos P2
    DrawNumx(220, 20,R1u(0x00D3),"orange","black") -- Hold P1
    DrawNumx(230, 20,R1u(0x00D4),"cyan"  ,"black") -- Hold P2

end
gui.register(BasicHUD)