105 lines
2.7 KiB
Lua
105 lines
2.7 KiB
Lua
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-- Super Castlevania IV (USA/JP) Collision box viewer
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-- For use with Bizhawk
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-- Author Pasky
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local player = false
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function findbit(p)
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return 2 ^ (p - 1)
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end
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local function ax(x,y)
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gui.drawLine(x,y+4,x,y-4,0xFFFF0000)
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gui.drawLine(x+4,y,x-4,y,0xFFFF0000)
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gui.drawPixel(x,y,0xFFFFFFFF)
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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(0x1280)
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camy = mainmemory.read_u16_le(0x1298)
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end
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local function objects()
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local xreg = emu.getregister("X")
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local areg = emu.getregister("A")
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local c = {0xFFFF0000,0x40FF0000}
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local o = { mainmemory.read_u16_le(0x8) - camx,mainmemory.read_u16_le(0x10), mainmemory.read_u16_le(0xA) - camy, mainmemory.read_u16_le(0x12) }
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if mainmemory.read_u16_le(xreg + 0x10) == 0xE then
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c[1] = 0xFF0000FF
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c[2] = 0x400000FF
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gui.drawBox(o[1]-o[2],o[3]-o[4],o[1]+o[2],o[3]+o[4],c[1],c[2]) -- Draw non-player objects
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else
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if hasbit(areg,findbit(1)) then
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gui.drawBox(o[1]-o[2],o[3]-o[4],o[1]+o[2],o[3]+o[4],c[1],c[2]) -- Draw objects that simon can collide with
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if o[2] == 0 and o[4] == 0 then -- enemy projectile, mark the center with an axis since there is no box
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ax(o[1],o[3])
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end
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end
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end
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if player == false then
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c[1] = 0xFF0000FF
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c[2] = 0x400000FF
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o = { mainmemory.read_u16_le(0x54A) - camx, 0x08, mainmemory.read_u16_le(0x54E), 0x13 }
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gui.drawBox(o[1]-o[2],o[3]-o[4],o[1]+o[2],o[3]+o[4],c[1],c[2]) -- Draw player hurtbox
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player = true -- Used so it isn't drawn every collision check
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end
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end
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local function weapons()
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local x,y,xr,yr,base
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for i = 0,7,1 do
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base = 0x200 + (i * 0x40)
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if mainmemory.read_u16_le(base) ~= 0 then
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x = mainmemory.read_u16_le(base + 0xA) - camx
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y = mainmemory.read_u16_le(base + 0xE) - camy
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xr = mainmemory.read_u16_le(base + 0x28)
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yr = mainmemory.read_u16_le(base + 0x2A)
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if xr == 0 and yr == 0 then -- check if it's the whip
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if base == 0x400 then
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gui.drawBox(x-0x10,y-0x04,x+0x10,y+0x04,0xFFFFFFFF,0x40FFFFFF)
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else
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gui.drawBox(x-0x04,y-0x04,x+0x04,y+0x04,0xFFFFFFFF,0x40FFFFFF)
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end
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else
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gui.drawBox(x-xr,y-yr,x+xr,y-yr)
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end
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end
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end
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end
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local function pproj()
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local yreg = emu.getregister("Y")
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local o = { mainmemory.read_u16_le(yreg + 0xA) - camx, mainmemory.read_u16_le(yreg + 0x28), mainmemory.read_u16_le(yreg + 0xE) - camy, mainmemory.read_u16_le(yreg + 0x2A) }
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gui.drawBox(o[1]-o[2],o[3]-o[4],o[1]+o[2],o[3]+o[4],0xFFFFFFFF,0x40FFFFFF)
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end
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local function reset()
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player = false
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end
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event.onmemoryexecute(objects,0x00DC7A)
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event.onmemoryexecute(pproj,0xDD74)
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while true do
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camera()
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weapons()
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emu.frameadvance()
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reset()
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end
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