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alexbevi
GitHub Repository: alexbevi/BizHawk
 Path: blob/master/Assets/Lua/NES/NinjaGaiden_Hitbox.lua
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--Author Pasky13

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--Player

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local px = 0x0086

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local py = 0x008A

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local projxbase = 0x4BB  -- Object X speed base is 0x4C1

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local projybase = 0x4BE  -- Object Y speed base ix 0x4C4

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--Enemies

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local ex = 0x0460

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local ey = 0x0480

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local efacing = 0x440

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local etype = 0x0438

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--Objects

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local ox = 0x4D9

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local oy = 0x4E1

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memory.usememorydomain("PRG ROM")

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local function Ryu()

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		local x = mainmemory.read_u8(px)

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		local y = mainmemory.read_u8(py)

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		local yrad = mainmemory.read_u8(0x90)

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		local act = mainmemory.read_u8(0x83)

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		local subwep = mainmemory.read_u8(0xC9)

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		local flip = 0

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		local swdactive = mainmemory.read_u8(0x83)

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		if bit.band(mainmemory.read_u8(0x84),0x40) == 0x40 then

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			flip = 1

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		end	

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		--Spin slash check

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		if subwep == 0x85 then

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			if mainmemory.read_u8(0x83) >= 0x0C and mainmemory.read_u8(0x83) <= 0x0F then 

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				gui.drawBox(x+9,y-8,x-9,y-yrad,0xFFFFFF00,0x60FFFF00)

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			end

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		end

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		--Check if Ryu is attacking with sword 7 = stand/jump, A = crouching

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		if swdactive == 7 or swdactive == 0x0A then

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			if flip == 0 then

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				gui.drawBox(x,y-yrad,x+0x20,y-yrad+0x10,0xFFFFFFFF,0x60FFFFFF)

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			else

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				gui.drawBox(x,y-yrad,x-0x20,y-yrad+0x10,0xFFFFFFFF,0x60FFFFFF)

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			end

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		end

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		-- Check spinning flame subweapon

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		if subwep == 0x84 then

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			if mainmemory.read_u8(0x4C8) > 0 then

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				gui.drawBox(x+9,y-8,x-9,y-yrad,0xFFFFFF00,0x60FFFF00)

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			end

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		end

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		gui.drawLine(x,y,x,y-yrad,0xFF0000FF)

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end

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local function weapons()

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	for i = 0,2,1 do

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		active = bit.band(mainmemory.read_u8(0xC8),memory.read_u8(0x1E66F + i))

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		if active > 0 then

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			local wtype = bit.band(mainmemory.read_u8(0xC9),0x7F)

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			local x = mainmemory.read_u8(projxbase + i)

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			local y = mainmemory.read_u8(projybase + i)

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			local xrad = memory.read_u8(0x1E605 + wtype)

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			gui.drawBox(x+xrad,y,x-xrad,y-xrad,0xFFFF00FF,0x60FF00FF)

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		end

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	end

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end

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local function enemies()

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	for i = 0,8,1 do

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		local active = bit.band(mainmemory.read_u8(0x73),memory.read_u8(0x1E66F + i))

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		if active > 0 then

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			local offset = mainmemory.read_u8(etype + i)

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			local x = mainmemory.read_u8(ex + i)

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			local y = mainmemory.read_u8(ey + i)

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			local xrad = memory.readbyte(0x3300 + offset)

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			local yrad = memory.readbyte(0x3400 + offset)

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			gui.drawBox(x+xrad,y,x-xrad,y-yrad,0xFFFF0000,0x60FF0000)

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			gui.drawLine(x,y,x,y-yrad,0xFFFFFF00)

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		end

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	end

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end

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local function objects()

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	for i = 0,3,1 do

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		local active = bit.band(mainmemory.read_u8(0xC0),memory.read_u8(0x1E66F + i))

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		if active > 0 then

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			active = bit.band(mainmemory.read_u8(0x4D1 + i),8)

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			if active == 0 then

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				x = mainmemory.read_u8(ox + i)

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				y = mainmemory.read_u8(oy + i)

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				gui.drawLine(x,y,x,y-0x10,0xFF00FFF0)

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				gui.drawBox(x-0x0C,y,x+0x0C,y-0x10,0xFF00FFF0,0x6000FFF0)

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			end

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		end

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	end

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end

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while true do

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	Ryu()

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	weapons()

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	enemies()

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	objects()

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	emu.frameadvance()

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end

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