DKC3 collision script.

BizHawk.MultiClient/output/Lua/SNES/Donkey Kong Country 3.lua

@@ -0,0 +1,101 @@
+--Author pasky13
+
+local cx 
+local cy
+local data = 0x3C0000
+
+local function camera()
+	cx = mainmemory.read_u16_le(0x493)
+	cy = mainmemory.read_u16_le(0x497)
+end
+
+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)
+	return val
+end
+
+memory.usememorydomain("CARTROM")
+
+local function player()
+	local pbase = 0x878
+	for i = 0,1,1 do
+		pbase = pbase + (i * 0x6E)
+		if mainmemory.read_u8(pbase + 0x24) > 0 then
+			local point = memory.read_u16_le(mainmemory.read_u16_le(pbase + 0x24) + 0x3C8003)
+			local properties = mainmemory.read_u16_le(pbase + 0x1E)
+			local x = mainmemory.read_u16_le(pbase + 0x12) - cx 
+			local y = mainmemory.read_u16_le(pbase + 0x16) - cy
+			local xoff = memory.read_s8(point + data) 
+			local yoff = memory.read_s8(point + 2 + data)
+			local xrad = memory.read_u8(point + 4 + data)
+			local yrad = memory.read_u8(point + 6 + data)
+			
+			if hasbit(properties,findbit(15)) then  -- If facing right
+				xoff = xoff * -1
+				xrad = xrad * -1
+			elseif hasbit(properties,findbit(16)) then -- Upside down?
+				yoff = yoff * -1
+				yrad = yrad * -1
+			end
+			
+
+			gui.drawBox(x+xoff,y+yoff,x+xoff+xrad,y+yoff+yrad,0xFF0000FF,0x400000FF)
+		end
+	end
+end
+
+local function enemy()
+	local start = 0x954
+	local base
+	local x
+	local y
+	local xoff
+	local yoff
+	local xrad
+	local yrad
+	local properties
+	local point
+	local active
+	for i = 0,15,1 do
+		base = start + (i * 0x6E)
+		active = mainmemory.read_u8(base + 0x30)
+		properties = mainmemory.read_u16_le(base + 0x1E)
+		
+		if mainmemory.read_u8(base + 0x24) > 0 then
+			point = memory.read_u16_le(mainmemory.read_u16_le(base + 0x24) + 0x3C8003)
+			properties = mainmemory.read_u16_le(base + 0x1E)
+			x = mainmemory.read_u16_le(base + 0x12) - cx
+			y = mainmemory.read_u16_le(base + 0x16) - cy
+			xoff = memory.read_s8(point + data)
+			yoff = memory.read_s8(point + 2 + data)
+			xrad = memory.read_u8(point + 4 + data)
+			yrad = memory.read_u8(point + 6 + data)
+
+			
+			if hasbit(properties,findbit(15)) then	-- If facing right
+				xoff = xoff * -1
+				xrad = xrad * -1
+			elseif hasbit(properties,findbit(16)) then -- Upside down?
+				yoff = yoff * -1
+				yrad = yrad * -1
+			end
+			
+			gui.drawBox(x+xoff,y+yoff,x+xoff+xrad,y+yoff+yrad,0xFFFF0000,0x40FF0000)
+		end
+	end
+end
+
+while true do
+	camera()
+	player()
+	enemy()
+	emu.frameadvance()
+end