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alexbevi
GitHub Repository: alexbevi/BizHawk
 Path: blob/master/Assets/Lua/SNES/Y's III.lua
2 views
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-- Y's III (SNES) Collision box viewer

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-- Bizhawk

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-- Author: Pasky

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local camx

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local camy

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function findbit(p) 

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	return 2 ^ (p - 1)

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end

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function hasbit(x, p) 

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	return x % (p + p) >= p 

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end

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local function hex(val)

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	val = string.format("%X",val)

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	if string.len(val) == 1 then

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		val = "0" .. val

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	end

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	return val

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end

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local function camera()

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	camx = mainmemory.read_u16_le(0x12D8)

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	camy = mainmemory.read_u16_le(0x12E0)

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end

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memory.usememorydomain("CARTROM")

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local function player()

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	local x = mainmemory.read_u8(0x1274)

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	local y = mainmemory.read_u8(0x1276)

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	local x1 = x

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	local y1 = y

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	local x2 = 0

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	local y2 = 0

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	if mainmemory.read_u8(0x1273) == 3 then

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		x1 = x1 - 4

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		x2= x1 + 0x18

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		y1= y1 + 0x12

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		y2= y1 + 0x10

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	else

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		x2 = x1 + 0x10

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		y1 = y1 + 0x08

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		y2 = y1 + 0x18

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	end

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	gui.drawBox(x1,y1,x2,y2,0xFF0000FF,0x300000FF)

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	-- cheat

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	-- memory.writebyte(0x1294,0x90) -- infinite hp

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	-- memory.writeword(0x1299,0x400) -- experience

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	-- Attacking

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	if mainmemory.read_u8(0x1283) ~= 0 then

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		local offset1 = bit.band(mainmemory.read_u8(0x1287),0x3)

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		offset1 = offset1 + mainmemory.read_u8(0x1278) + mainmemory.read_u8(0x127A) - 0x10

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		offset1 = bit.lshift(offset1,1)

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		local offset2 = bit.band(mainmemory.read_u8(0x127C),0x40)

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		offset2 = bit.rshift(offset2,6)

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		offset2 = bit.bor(offset2,offset1)

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		offset2 = bit.lshift(offset2,2)

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		local ax1 = bit.band(x + memory.read_u8(0xBA4BE + offset2),0xFF)

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		local ay1 = bit.band(y + memory.read_u8(0xBA4BF + offset2),0xFF)

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		local ax2 = bit.band(x + memory.read_u8(0xBA4BC + offset2),0xFF)

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		local ay2 = bit.band(y + memory.read_u8(0xBA4BD + offset2),0xFF)

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		gui.drawBox(ax1,ay1,ax2,ay2)

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	end

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end

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local function enemies()

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	local start = 0x17FB - 0x22

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	for i =0,15,1 do

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		local base = start + (i * 0x22)

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		local x = mainmemory.read_u16_le(base) - camx

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		local y = mainmemory.read_u16_le(base + 2) - camy

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		local facing = mainmemory.read_u8(base + 0xf)

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		local offset = mainmemory.read_u8(base + 0xD) * 2

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		local pointer = memory.read_u16_le(0xB9A25 + offset)

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		local hp = mainmemory.read_u8(base + 0x8)

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		local active = mainmemory.read_u8(base + 0x1D)

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		if active ~= 0 then

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			if bit.band(facing,0x40) ~= 0 then

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				-- left

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				pointer = pointer + 4

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			else

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				-- right

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			end

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			local x1 = x + memory.read_u8(0xB9A26 + pointer)

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			local y1 = y + memory.read_u8(0xB9A27 + pointer)

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			local x2 = x + memory.read_u8(0xB9A28 + pointer)

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			local y2 = y + memory.read_u8(0xB9A29 + pointer)

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			gui.text(x,y,"HP: " .. hp )

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			gui.drawBox(x1,y1,x2,y2,0xFFFF0000,0x30FF0000)

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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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	camera()

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	player()

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	enemies()

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	emu.frameadvance()

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end

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