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Copy pathPlok Hitbox.lua
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Copy pathPlok Hitbox.lua
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303 lines (264 loc) · 10.4 KB
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-- Patch some functions for cross-emu compatibility
emuId_bizhawk = 0
emuId_snes9x = 1
emuId_lsnes = 2
if memory.usememorydomain then
emuId = emuId_bizhawk
elseif memory.readshort then
emuId = emuId_snes9x
else
emuId = emuId_lsnes
end
if emuId == emuId_lsnes then
rshift = bit.lrshift
else
rshift = bit.rshift
end
-- Converts from SNES address model to flat address model (for ROM access)
function snes2pc(p)
return bit.band(rshift(p, 1), 0x3F8000) + bit.band(p, 0x7FFF)
end
-- Define memory access functions
if emuId == emuId_bizhawk then
function makeMemoryReader(f)
return function(p)
if p < 0x800000 then
return f(bit.band(p, 0x1FFFF), "WRAM")
else
return f(snes2pc(p), "CARTROM")
end
end
end
function makeMemoryWriter(f)
return function(p, v)
if p < 0x800000 then
return f(bit.band(p, 0x1FFFF), v, "WRAM")
else
print(string.format('Error: trying to write to ROM address %X', p))
-- Writing to ROM in Bizhawk doesn't actually work, but hoping it might one day...
return f(snes2pc(p), v, "CARTROM")
end
end
end
read_u8 = makeMemoryReader(memory.read_u8)
read_u16_le = makeMemoryReader(memory.read_u16_le)
read_s8 = makeMemoryReader(memory.read_s8)
read_s16_le = makeMemoryReader(memory.read_s16_le)
write_u8 = makeMemoryWriter(memory.write_u8)
write_u16_le = makeMemoryWriter(memory.write_u16_le)
gui.drawBox = gui.drawBox or function(x0, y0, x1, y1, fg, bg) gui.box(x0, y0, x1, y1, bg, fg) end
gui.drawLine = gui.drawLine or gui.line
gui.drawText = gui.pixelText or gui.text
elseif emuId == emuId_snes9x then
read_u8 = memory.readbyte
read_u16_le = memory.readshort
read_s8 = memory.readbytesigned
read_s16_le = memory.readshortsigned
write_u8 = memory.writebyte
write_u16_le = memory.writeshort
gui.drawBox = function(x0, y0, x1, y1, fg, bg) gui.box(x0, y0, x1, y1, bg, fg) end
gui.drawLine = gui.line
gui.drawText = gui.text
else -- emuId == lsnes
function makeMemoryReader(f)
return function(p)
if p < 0x800000 then
return f(p)
else
return f("ROM", snes2pc(p))
end
end
end
function makeMemoryWriter(f)
return function(p, v)
if p < 0x800000 then
return f(p, v)
else
print(string.format('Error: trying to write to ROM address %X', p))
end
end
end
read_u8 = makeMemoryReader(memory.readbyte)
read_u16_le = makeMemoryReader(memory.readword)
read_s8 = makeMemoryReader(memory.readsbyte)
read_s16_le = makeMemoryReader(memory.readsword)
write_u8 = makeMemoryWriter(memory.writebyte)
write_u16_le = makeMemoryWriter(memory.writeword)
function decodeColour(colour)
if colour == "red" then
return 0xFF0000
elseif colour == "orange" then
return 0x808000
elseif colour == "white" then
return 0xFFFFFF
elseif colour == "black" then
return 0x000000
elseif colour == "green" then
return 0x00FF00
elseif colour == "purple" then
return 0xFF00FF
elseif colour == "cyan" then
return 0x00FFFF
elseif colour == "blue" then
return 0x0000FF
elseif colour == "clear" then
return 0xFF000000
else
if type(colour) == "string" then
print(string.format("Colour = %s", colour))
end
return bit.band(colour, 0xFFFFFF)
end
end
gui.drawBox = function(x0, y0, x1, y1, fg, bg)
local n_x, n_y = gui.resolution()
local s_x = n_x / 256
local s_y = n_y / 224
x0, x1 = math.min(x0, x1), math.max(x0, x1)
y0, y1 = math.min(y0, y1), math.max(y0, y1)
x0 = math.floor(x0 * s_x)
y0 = math.floor(y0 * s_y)
x1 = math.floor(x1 * s_x)
y1 = math.floor(y1 * s_y)
gui.rectangle(x0, y0, x1 - x0, y1 - y0, 1, decodeColour(fg), decodeColour(bg))
end
gui.drawLine = function(x0, y0, x1, y1, fg)
local n_x, n_y = gui.resolution()
local s_x = n_x / 256
local s_y = n_y / 224
x0 = math.floor(x0 * s_x)
y0 = math.floor(y0 * s_y)
x1 = math.floor(x1 * s_x)
y1 = math.floor(y1 * s_y)
gui.line(x0, y0, x1, y1, decodeColour(fg))
end
gui.drawText = function(x, y, text, fg, bg)
local n_x, n_y = gui.resolution()
local s_x = n_x / 256
local s_y = n_y / 224
x = math.floor(x * s_x)
y = math.floor(y * s_y)
gui.text(x, y, text, decodeColour(fg), decodeColour(bg))
end
end
-- Globals
debugFlag = 1 -- Enables displaying block data inside block hitboxes
transparency = 0xFF -- 0xFF is opaque, 0 is invisible
-- Add padding borders in BizHawk (highly resource intensive)
xExtra = 0
yExtra = 0
if emuId == emuId_bizhawk then
--xExtra = 256
--yExtra = 224
client.SetGameExtraPadding(xExtra, yExtra, xExtra, yExtra)
end
xExtraBlocks = rshift(xExtra, 4)
yExtraBlocks = rshift(yExtra, 4)
-- Adjust drawing to account for the borders
function drawText(x, y, text, fg, bg)
gui.drawText(x + xExtra, y + yExtra, text, fg, bg or "clear")
end
function drawBox(x0, y0, x1, y1, fg, bg)
gui.drawBox(x0 + xExtra, y0 + yExtra, x1 + xExtra, y1 + yExtra, fg + transparency, bg or "clear")
end
function drawLine(x0, y0, x1, y1, fg)
gui.drawLine(x0 + xExtra, y0 + yExtra, x1 + xExtra, y1 + yExtra, fg + transparency)
end
function isValidLevelData()
return true
end
function displayScrollBoundaries(cameraX, cameraY)
for i=0,1 + xExtra * 2 / 256 do
local x = 256 + xExtra - i * 256 - bit.band(cameraX, 0xFF)
drawLine(x, -yExtra, x, 223 + yExtra, 0xFFFFFF00)
end
for i=0,1 + yExtra * 2 / 256 do
local y = 256 + yExtra - i * 256 - bit.band(cameraY, 0xFF)
drawLine(-xExtra, y, 255 + xExtra, y, 0xFFFFFF00)
end
end
function displayBlocks(cameraX, cameraY, roomWidth)
for y = -yExtraBlocks,14 + yExtraBlocks do
for x = -xExtraBlocks,16 + xExtraBlocks do
-- Align block outlines graphically
local blockX = x * 16 - bit.band(cameraX, 0xF)
local blockY = y * 16 - bit.band(cameraY, 0xF)
-- Blocks are 16x16 px², using a right shift to avoid dealing with floats
local blockIndex = rshift(bit.band(cameraY + y * 16, 0xFFFF), 4) * roomWidth
+ rshift(bit.band(cameraX + x * 16, 0xFFFF), 4)
-- Get tilemap entry and translate into block data via $7E:2000 table
local tilemapEntry = read_u16_le(0x7E3000 + blockIndex * 2)
local blockData = bit.band(tilemapEntry, 0xC000) + read_u16_le(0x7E2000 + rshift(bit.band(tilemapEntry, 0x3F0), 1) + bit.band(tilemapEntry, 0xF))
-- 0x4000 is X flip flag, 0x8000 is Y flip flag
local blockType = bit.band(blockData, 0xFFF)
if debugFlag ~= 0 then
-- Show the block type of every block. LSB then MSB. Don't bother for air (or flipped air)
if bit.band(blockData, 0xBFFF) ~= 0 then
drawText(blockX + 4, blockY, string.format("%02X", bit.band(blockData, 0xFF)), "white")
drawText(blockX + 4, blockY+8, string.format("%02X", rshift(blockData, 8)), "white")
end
end
-- Draw the block outline depending on its block type
if blockType == 1 then
-- Solid block
drawBox(blockX, blockY, blockX + 15, blockY + 15, 0xFF000000)
elseif blockType == 2 then
-- Jump through block
drawBox(blockX, blockY, blockX + 15, blockY + 15, 0xFF800000)
elseif blockType >= 3 then
-- Slope
local flipX = 1
if bit.band(tilemapEntry, 0x4000) ~= 0 then
flipX = -1
blockX = blockX + 15
end
local flipY = 1
if bit.band(tilemapEntry, 0x8000) ~= 0 then
flipY = -1
blockY = blockY + 15
end
local slopeType = blockType - 3
local p_slopeDefinition = 0x83E964 + slopeType * 16 * 2
for xx = 0,14 do
local yy_from = read_s16_le(p_slopeDefinition + xx * 2)
local yy_to = read_s16_le(p_slopeDefinition + xx * 2 + 2)
if yy_from ~= -1 and yy_from ~= 0x11 and yy_to ~= -1 and yy_to ~= 0x11 then
drawLine(blockX + xx * flipX, blockY + yy_from * flipY, blockX + (xx + 1) * flipX, blockY + yy_to * flipY, 0x00FF0000)
end
end
end
end
end
end
function displayPlokHitbox(cameraX, cameraY, plokXPosition, plokYPosition)
plokXRadius = 0x0
plokYRadius = 0x10
left = plokXPosition - plokXRadius - cameraX
top = plokYPosition - plokYRadius - cameraY
right = plokXPosition + plokXRadius - cameraX
bottom = plokYPosition + plokYRadius - cameraY
-- Draw plok's hitbox
drawBox(left, top, right, bottom, 0x00FFFF00)
end
-- Finally, the main loop
function on_paint()
if not isValidLevelData() then
return
end
local plokXPosition = read_u16_le(0x7E0426)
local plokYPosition = read_u16_le(0x7E0428) + 0x10
-- Co-ordinates of the top-left of the screen
local cameraX = read_u16_le(0x7E006A)
local cameraY = read_u16_le(0x7E006C)
-- Width of the room in blocks
local roomWidth = read_u16_le(0x7E008A)
--displayScrollBoundaries(cameraX, cameraY)
displayBlocks(cameraX + 0x20, cameraY + 0x20, roomWidth)
displayPlokHitbox(cameraX, cameraY, plokXPosition, plokYPosition)
end
if emuId ~= emuId_lsnes then
while true do
on_paint();
emu.frameadvance()
end
end