Added Ninja Gaiden II collision viewer (LUA).

output/Lua/NES/Ninja Gaiden II.lua

@@ -0,0 +1,100 @@
+-- Ninja Gaiden II (USA) Collision Box Viewer
+-- Author Pasky
+-- For use with Bizhawk
+
+local drawn = false -- Used to draw ryu's vulnaribility box only once per frame
+memory.usememorydomain("System Bus")
+
+function axis(x,y,color,xsize,ysize)
+	if xsize == nil then
+		xsize = 2
+	end
+	if ysize == nil then
+		ysize = 2
+	end
+	gui.drawLine(x+xsize,y,x-xsize,y,color)
+	gui.drawLine(x,y+ysize,x,y-ysize,color)
+	gui.drawLine(x,y,x,y,0xFF000000)
+end
+
+-- Player attacks
+
+local function pattack()
+	if memory.read_u8(0xCA55) == 0xB9 and memory.read_u8(0xCA56) == 0xF0 and memory.read_u8(0xCA57) == 0x04 then -- Bank check
+		local xreg = emu.getregister("X")
+		local yreg = emu.getregister("Y")
+		-- Sword
+		local x = memory.read_u8(0x550 + yreg)
+		local y = memory.read_u8(0x580 + yreg) - 0x03
+		local xrad = 0x20
+		if bit.band(memory.read_u8(0x4F0 + yreg),0x40) == 0x40 then -- check ryu facing direction
+			xrad = -0x20
+		end
+		--  NOTE:  The sword has no yradius, using drawBox() with a duplicate y coordinate does not draw a box, drawLine() is used in its place
+		gui.drawLine(x,y,x+xrad,y,0xFFFFFFFF) -- Draw sword hitbox (line)
+		
+		-- Enemy vuln boxes (green)
+		x = memory.read_u8(0x550 + xreg)
+		y = memory.read_u8(0x580 + xreg)
+		xrad = memory.read_u8(0x610 + xreg)
+		local yrad = memory.read_u8(0x628 + xreg)
+		gui.drawBox(x-xrad,y-yrad,x+xrad,y+yrad,0xFF00FF00,0x4000FF00)
+	end
+end
+
+-- Touch collision
+local function collision()
+	if memory.read_u8(0xCC33) == 0xB9 and memory.read_u8(0xCC34) == 0x50 and memory.read_u8(0xCC35) == 0x05 then -- Bank check
+		local xreg = emu.getregister("X")
+		local yreg = emu.getregister("Y")
+		local x = memory.read_u8(0x550 + yreg)
+		local y = memory.read_u8(0x580 + yreg)
+		local xrad = memory.read_u8(0x610 + yreg)
+		local yrad = memory.read_u8(0x628 + yreg)
+		gui.drawBox(x-xrad,y-yrad,x+xrad,y+yrad,0xFFFF0000,0x40FF0000)
+		
+		-- Player
+		if drawn == false then
+			local x = memory.read_u8(0x550)
+			local y = memory.read_u8(0x580)
+			local hp = memory.read_u8(0x80)
+			local xrad = 0x06
+			local yrad = 0x10
+			if bit.band(memory.read_u8(0x520),0x02) == 0x02 then -- Check if ryu is crouching
+				yrad = 0x0C
+			end
+			gui.drawBox(x-xrad,y-yrad,x+xrad,y+yrad,0xFF0000FF,0x400000FF)
+			drawn = true
+		end
+	end
+end
+
+-- Subweapons
+local function subweapon()
+	if memory.read_u8(0xCB2F) == 0xBD and memory.read_u8(0xCB30) == 0x50 and memory.read_u8(0xCB31) == 0x05 then -- Bank check
+		-- sub weapon
+		local xreg = emu.getregister("X")
+		local yreg = emu.getregister("Y")
+		local x = memory.read_u8(0x550 + yreg)
+		local y = memory.read_u8(0x580 + yreg)
+		local xrad = memory.read_u8(0xC0)
+		local yrad = memory.read_u8(0xC0)
+		gui.drawBox(x-xrad,y-yrad,x+xrad,y+yrad,0xFFFFFFFF,0x40FFFFFF)
+		
+		-- Enemy vuln (green)
+		x = memory.read_u8(0x550 + xreg)
+		y = memory.read_u8(0x580 + xreg)
+		xrad = memory.read_u8(0x610 + xreg)
+		yrad = memory.read_u8(0x628 + xreg)
+		gui.drawBox(x-xrad,y-yrad,x+xrad,y+yrad,0xFF00FF00,0x4000FF00)
+	end
+end
+
+event.onmemoryexecute(collision,0xCC33)
+event.onmemoryexecute(pattack,0xCA55)
+event.onmemoryexecute(subweapon,0xCB2F)
+
+while true do
+	emu.frameadvance()
+	drawn = false
+end

output/Lua/NES/Ninja Gaiden III.lua

@@ -17,19 +17,6 @@ function axis(x,y,color,xsize,ysize)
 	gui.drawLine(x,y,x,y,"#000000FF")
 end
 
-local function player()
-	if drawn == false then
-		local x = memory.read_u8(0x516)
-		local y = memory.read_u8(0x58E)
-		local xrad = 0x06
-		local yrad = memory.read_u8(0x8C)
-		local hp = memory.read_u8(0xA7)
-		gui.drawBox(x-xrad,y-yrad,x+xrad,y+yrad,"#0000FF40","#0000FFFF")
-		axis(x,y)
-		drawn = true
-	end
-end
-
 local function collision()  -- Collision between enemies
 	if memory.read_u8(0xA2CA) == 0xBD and memory.read_u8(0xA2CB) == 0x16 and memory.read_u8(0xA2CC) == 0x05 then -- Bank check
 		local xreg = emu.getregister("X")
@@ -45,6 +32,16 @@ local function collision()  -- Collision between enemies
 		if bit.band(invuln,0x02) == 0x02 then
 			axis(x,y,0xFFFFFFFF,xrad,yrad)
 		end	
+		-- Player
+		if drawn == false then
+			x = memory.read_u8(0x516)
+			y = memory.read_u8(0x58E)
+			xrad = 0x06
+			yrad = memory.read_u8(0x8C)
+			gui.drawBox(x-xrad,y-yrad,x+xrad,y+yrad,0xFF0000FF,0x400000FF)
+			axis(x,y)
+			drawn = true
+		end
 	end
 end
 
@@ -103,7 +100,6 @@ event.onmemoryexecute(pattack,0xA050)
 event.onmemoryexecute(subweapon,0xA1DB)
 
 while true do
-	player()
 	emu.frameadvance()
 	drawn = false
 end