Y's III collision box viewer

BizHawk.MultiClient/output/Lua/SNES/Y's III.lua

@@ -0,0 +1,107 @@
+-- Y's III (SNES) Collision box viewer
+-- Bizhawk
+-- Author: Pasky
+
+local camx
+local camy
+
+function findbit(p) 
+	return 2 ^ (p - 1)
+end
+
+function hasbit(x, p) 
+	return x % (p + p) >= p 
+end
+
+local function hex(val)
+	val = string.format("%X",val)
+	if string.len(val) == 1 then
+		val = "0" .. val
+	end
+	return val
+end
+
+local function camera()
+	camx = mainmemory.read_u16_le(0x12D8)
+	camy = mainmemory.read_u16_le(0x12E0)
+end
+
+memory.usememorydomain("CARTROM")
+
+local function player()
+	local x = mainmemory.read_u8(0x1274)
+	local y = mainmemory.read_u8(0x1276)
+	local x1 = x
+	local y1 = y
+	local x2 = 0
+	local y2 = 0
+	if mainmemory.read_u8(0x1273) == 3 then
+		x1 = x1 - 4
+		x2= x1 + 0x18
+		y1= y1 + 0x12
+		y2= y1 + 0x10
+	else
+		x2 = x1 + 0x10
+		y1 = y1 + 0x08
+		y2 = y1 + 0x18
+	end
+
+	gui.drawBox(x1,y1,x2,y2,0xFF0000FF,0x300000FF)
+	-- cheat
+	-- memory.writebyte(0x1294,0x90) -- infinite hp
+	-- memory.writeword(0x1299,0x400) -- experience
+	
+	-- Attacking
+	if mainmemory.read_u8(0x1283) ~= 0 then
+		local offset1 = bit.band(mainmemory.read_u8(0x1287),0x3)
+		offset1 = offset1 + mainmemory.read_u8(0x1278) + mainmemory.read_u8(0x127A) - 0x10
+		offset1 = bit.lshift(offset1,1)
+		local offset2 = bit.band(mainmemory.read_u8(0x127C),0x40)
+		offset2 = bit.rshift(offset2,6)
+		offset2 = bit.bor(offset2,offset1)
+		offset2 = bit.lshift(offset2,2)
+		local ax1 = bit.band(x + memory.read_u8(0xBA4BE + offset2),0xFF)
+		local ay1 = bit.band(y + memory.read_u8(0xBA4BF + offset2),0xFF)
+		local ax2 = bit.band(x + memory.read_u8(0xBA4BC + offset2),0xFF)
+		local ay2 = bit.band(y + memory.read_u8(0xBA4BD + offset2),0xFF)
+		gui.drawBox(ax1,ay1,ax2,ay2)
+	end
+end
+
+local function enemies()
+	local start = 0x17FB - 0x22
+	for i =0,15,1 do
+		local base = start + (i * 0x22)
+		local x = mainmemory.read_u16_le(base) - camx
+		local y = mainmemory.read_u16_le(base + 2) - camy
+		local facing = mainmemory.read_u8(base + 0xf)
+		local offset = mainmemory.read_u8(base + 0xD) * 2
+		local pointer = memory.read_u16_le(0xB9A25 + offset)
+		local hp = mainmemory.read_u8(base + 0x8)
+		local active = mainmemory.read_u8(base + 0x1D)
+		
+		if active ~= 0 then
+			if bit.band(facing,0x40) ~= 0 then
+				-- left
+				pointer = pointer + 4
+			else
+				-- right
+			end
+			local x1 = x + memory.read_u8(0xB9A26 + pointer)
+			local y1 = y + memory.read_u8(0xB9A27 + pointer)
+			local x2 = x + memory.read_u8(0xB9A28 + pointer)
+			local y2 = y + memory.read_u8(0xB9A29 + pointer)
+			
+			gui.text(x,y,"HP: " .. hp )
+			gui.drawBox(x1,y1,x2,y2,0xFFFF0000,0x30FF0000)
+			end
+	end	
+end
+
+
+while true do
+	camera()
+	player()
+	enemies()
+	emu.frameadvance()
+end