Super C Collision viewer.

BizHawk.MultiClient/output/Lua/NES/Super C.lua

@@ -0,0 +1,143 @@
+-- Author Pasky13
+
+--Player
+local px = 0x54C
+local py = 0x532
+
+--Player projectiles
+local projxbase = 0x588
+local projybase = 0x578
+
+--Enemies
+local etype = 0xC6
+local ex = 0x53C
+local ey = 0x522
+
+local xm
+local ym
+
+local function draw_axis(x,y,color)
+	gui.drawLine(x,y-4,x,y+4,color)
+	gui.drawLine(x-4,y,x+4,y,color)
+end
+
+local function sign(val)
+	if val > 0x7F then
+		val = 256 + (val * -1)
+	end
+	return val
+end
+
+memory.usememorydomain("PRG ROM")
+
+local function player()
+	-- Player 1
+	if mainmemory.read_u8(0xC6) ~= 0 then
+		local x = mainmemory.read_u8(px)
+		local y = mainmemory.read_u8(py)
+		draw_axis(x,y,0xFF0000FF)
+	end
+	-- Player 2
+	if mainmemory.read_u8(0xC7) ~= 0 then
+		x = mainmemory.read_u8(px+1)
+		y = mainmemory.read_u8(py+1)
+		draw_axis(x,y,0xFF0000FF)
+	end
+end
+
+local function bullets()
+	-- P1
+	if mainmemory.read_u8(0xC6) ~= 0 then
+		for i = 0,4,1 do
+			local x = mainmemory.read_u8(projxbase + i)
+			local y = mainmemory.read_u8(projybase + i)
+			
+			if mainmemory.read_u8(0x638 + i) > 0 then
+				gui.drawBox(x-2,y-2,x+2,y+2,0xFFFFFFFF,0x40FFFFFF)
+			end
+		end
+	end
+	
+	-- P2
+	if mainmemory.read_u8(0xC7) ~= 0 then
+		for i = 0,9,1 do
+			local x = mainmemory.read_u8(0x592 + i)
+			local y = mainmemory.read_u8(0x582 + i)
+			
+			if mainmemory.read_u8(0x642 + i) > 0 then
+				gui.drawBox(x-2,y-2,x+2,y+2,0xFFFFFFFF,0x40FFFFFF)
+			end
+		end
+	end
+end
+
+
+local function enemies()
+	local active
+	local etype
+	local fill
+	local outl
+	for i = 0,0x0D,1 do
+		active = mainmemory.read_u8(0x508+i)  -- sprite frame
+		etype = mainmemory.read_u8(0x73A + i)
+		if etype == 4 or etype == 0x0C then
+			fill = 0xFF00FF00
+			outl = 0x3500FF00
+		else
+			fill = 0xFFFF0000
+			outl = 0x35FF0000
+		end
+
+		local x = mainmemory.read_u8(ex + i)
+		local y = mainmemory.read_u8(ey + i)
+		
+		-- Player 1 collision detection
+		if mainmemory.read_u8(0xC6) ~= 0 then
+			if active > 0 then
+				local offset = ((mainmemory.read_u8(0xC6) + etype + 1) % 0x100)
+				local xoff = sign(memory.read_u8(0x6000 + offset + 1)) + 1
+				local xrad = memory.read_u8(0x6000 + offset + 3)
+				local yoff = sign(memory.read_u8(0x6000 + offset)) + 1
+				local yrad = memory.read_u8(0x6000 + offset + 2)
+				gui.drawBox(x-xoff,y-yoff,x-xoff+xrad,y-yoff+yrad,fill,outl)
+				
+			end
+		end
+		
+		-- Player 2 collision detection
+		if mainmemory.read_u8(0xC7) ~= 0 then
+			if active > 0 then
+				local offset = ((mainmemory.read_u8(0xC7) + etype + 1) % 0x100)
+				local xoff = sign(memory.read_u8(0x6000 + offset + 1)) + 1
+				local xrad = memory.read_u8(0x6000 + offset + 3)
+				local yoff = sign(memory.read_u8(0x6000 + offset)) + 1
+				local yrad = memory.read_u8(0x6000 + offset + 2)
+				gui.drawBox(x-xoff,y-yoff,x-xoff+xrad,y-yoff+yrad,fill,outl)
+			end
+		end	
+		
+		-- Projectile collision
+		if active > 0 and etype ~= 4 and etype ~= 0x0C then
+			local poffset = etype + 0xA0
+			local pxoff = sign(memory.read_u8(0x6000 + poffset + 1)) + 1
+			local pxrad = memory.read_u8(0x6000 + poffset + 3) - 2
+			local pyoff = sign(memory.read_u8(0x6000 + poffset)) + 1
+			local pyrad = memory.read_u8(0x6000 + poffset + 2) - 2
+			gui.drawBox(x-pxoff,y-pyoff,x-pxoff+pxrad,y-pyoff+pyrad,0xFFFFFF00,0x40FFFF00)
+		end
+		
+	end
+end
+
+local function scaler()
+	xm = client.screenwidth() / 256
+	ym = client.screenheight() / 224
+end
+
+while true do
+	scaler()
+	player()
+	bullets()
+	enemies()
+	emu.frameadvance()
+end