TIC-80/demos/bpp.lua

-- title:  Blit segment demo cart
-- author: ddelemeny
-- desc:   Variable BPP rendering
-- script: lua

W=16*4
offset =
{
   0,     1,     2,
   W,   W+1,   W+2,
 2*W, 2*W+1, 2*W+2,
}
omap = {0,1,3,2}

function rFrame(x,y,w,h,segment,style)
  local keep = peek4(2*0x03FFC)
  poke4(2*0x03FFC, segment)
  function bdr(xy,rot)
    local hrz=(rot%2)==0, iend, c
    if hrz then c=x iend=w-3
    else c=y iend=h-3 end
    
    for i=0,iend do
      local ci = c+i*8+8
      local bS = math.random(1,4)
      spr(
        style+offset[bS*2],
        hrz and ci or xy,
        hrz and xy or ci,
        0,1,0,omap[bS]+rot
      )
    end
  end

  math.randomseed(x+y)
  local x2=x+(w-1)*8 y2=y+(h-1)*8

  spr(style,x,y,0)
  spr(style+offset[3],x2,y,0)
  spr(style+offset[7],x ,y2,0)
  spr(style+offset[9],x2,y2,0)
  
  bdr(y,0)
  bdr(y2,2)
  bdr(x,3)
  bdr(x2,1)
  
  rect(x+8,y+8,w*8-16,h*8-16,1)
  poke4(2*0x03FFC, keep)
end

function rFontSheet(x, y, segment, alt)
  spr((segment)*4+alt*128,x,y,0,1,0,0,4,8)
end

function rText(text,x,y,segment,alt)
  local keep = peek4(2*0x03FFC)
  poke4(2*0x03FFC, segment)
  font(text,x,y,0,5,8,false,1,alt)
  poke4(2*0x03FFC, keep)
end

-- segments for 1bpp BG page are:
-- 9, 11, 13, 15

local text="The quick brown\nfox jumps over\nthe lazy dog!"
local sel=0
function TIC()
  cls(15)
  poke4(2*0x03FF0+1,0)
    
  if btnp(0) then sel=(sel-1)%8 end
  if btnp(1) then sel=(sel+1)%8 end

  -- 1bpp total indexing
		-- blit segment = 8
  rFrame(10, 10, 9, 14, 8, 1040)
		
		-- 4bpp total indexing
		-- blit segment = 2 (default)
  rFontSheet(30, 30, sel//2, sel%2)
		
		-- 1bpp local indexing (font)
		-- font inverts BG and FG segments
		-- blit segment = 8+4+page
  rText(text, 100, 60, 8+4+sel//2,sel%2==1)
end

-- <TILES>
-- 032:0020505000205070002000500000007000200050000000000000000000000000
-- 033:6010302030403020602070003010500020406000000000000000000000000000
-- 034:4010000020205020202020702020502040100000000000000000000000000000
-- 035:0000000000000040007000200000001020002000100000000000000000000000
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-- 037:e111204050805020e040610041209000f0116100000000000000000000000000
-- 038:80204000404051404040e0e04040514080204000000000000000000000000000
-- 039:000000010000008000e000400000002040004010200000000000000000000000
-- 040:0001664200013342008100f70081006300c000f70000006300c0006300000000
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-- 042:03c0000081816681c003c381c003ffe7c003c3818181668103c0000000000000
-- 043:0000000c000000060000000300e70081000000c08100816081008130c0000000
-- 044:0040a0010040a04100c050e300c0004100c000e30000004100c0004000000000
-- 045:8000e040c7642040a0622120e301f3008680310086463100e726f30080000000
-- 046:c0c00000608180806081a2806081c1e36081a28060818080c0c0000000000000
-- 047:00000000000000020000000100e1008000000040600060204000601020000000
-- 048:6020303050304040502020205020104030707030000000000000000000000000
-- 049:4070607060101040503070207040501040302010000000000000000000000000
-- 050:6020000050502020207000005040202030300010000000000000000000000000
-- 051:4000107020702040100040202070200040001020000000000000000000000000
-- 052:e040e0e001701111514080c030002011e0f1f160000000000000000000000000
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-- 054:c060000011114040a06100001101000060e04040000000200000000000000000
-- 055:800020e040e04001200080c040e0400080002040000000000000000000000000
-- 056:c30183836601440467810607f381810273c0600333c0f3f3e1c0f3f100000000
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-- 082:6161e160d051902040814020a001212090c0f160000000000000000000000000
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-- 084:d0e0d0e111101110d011d0a010801101106111f0000000000000000000000000
-- 085:f111111100111111401121114001214140e041b1000000000000000000000000
-- 086:1111f1c011118040a0e00040110020401140f1c0000000000000000000000000
-- 087:106040002040a0004040110080400000016000e1000000000000000000000000
-- 088:c381c3c346424626662666c0e736e303f337f31630f337f730e736e300060000
-- 089:f744242480442424c0242226c02633b66036f1f360f3f0f360e1703300000000
-- 090:2416c7072213040143a10381c1c0c081e16060c07360f7c03360f7c300000000
-- 091:308381006002c300c00266008103000003030000060300000cc300f300000000
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-- 098:20204020600000a0a0206060a0204060b0d050b0000020000000000000000000
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-- 161:6010302030403020602070003010500020406000000000000000000000000000
-- 162:4010000020205020202020702020502040100000000000000000000000000000
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-- 165:e111204050805020e040610041209000f0116100000000000000000000000000
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-- 167:000000010000008000e000406000602040006010200000000000000000000000
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-- 170:03c0000081816681c001c381c003ffe7c003c3818181668103c0000000000000
-- 171:0000000c000000060000000300e70081000000c08100816081008130c0000000
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-- 176:6020303050304040502020205020104030707030000000000000000000000000
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-- 191:00000000000000c10100806380c301034000028180c301000100808000000000
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-- 194:5070705050204050702040305020505050702050000000000000000000000000
-- 195:1070302010705050105050501050505070505020000000000000000000000000
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-- 198:31e1f13131c081b0f1c0817031c0b1b031e1e031000000000000000000000000
-- 199:30b131e030f1713130f1f1313051b131f11131e0000000000000000000000000
-- 200:c3c3e387666666c0a5666660a5e7e360a7666660606666c0c366e38700000000
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-- 209:7050505020505050205050502050507020602070000000000000000000000000
-- 210:5050706050504020202020205020102050207060000000000000000000000000
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-- 223:00818100200142004001240080010000010100000201000000010000008100c3
-- 224:2000100040303060006050100050501000703060000000000000000000000000
-- 225:4000400060602060505070505030207060602040000000200000000000000000
-- 226:1020401030000050502040305020403050205050000020000000000000000000
-- 227:3000000020703020207050502050505070505020000000000000000000000000
-- 228:2000300040e1f0e1009131700091317000e1f0e1000000000000000000000000
-- 229:8100c100e1e060e091b1f191917060f1e1e06081000000e00000000000000000
-- 230:30c08130f000003131c081f031c0813131c091310000e0000000000000000000
-- 231:6000000060b0f0e060f1313160513131c15131e0000000000000000000000000
-- 232:810060008100600003c3e3c30006666000c766600066666000c7e3c300000000
-- 233:060083000600c000c7c3e3c76666c06666e7c0666660c0c7c7c3c006000000c3
-- 234:6081036060000060e381036666810363668103e166810363660303660000e100
-- 235:81000000810000008173e3c381f7666681b6666681366666033666c300000000
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-- 238:c1c081c06000006063e08162e6c0816166c081e366c1c36366c0a1660000c000
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-- 240:0000000030605060505030305050104030601030104000000000000000000000
-- 241:2000000070505050205050502050507040602070000000000000000000000000
-- 242:0000006050507020205060305060102050407060002000000000000000000000
-- 243:2030000020206000006030002020000020300000000000000000000000000000
-- 244:00000000f0e1f0e131913170319130c1f0e130f0308100000000000000000000
-- 245:60000000f1313111603131516031e0f1c1e040b1000000000000000000000000
-- 246:000000c0b191f140e091c060e0e16040b181f1c000e000000000000000000000
-- 247:406000004040410040c0a0004040000040600000000000000000000000000000
-- 248:0000000000000000e3c7e3c366666660666660c3e3c76006600660e360060000
-- 249:c0000000c0000000e3666636c0666636c06666b6c066c3f783c7816300000000
-- 250:00000003000000813666e781636603c0c166818163c3c0813681e70300c00000
-- 251:81c000008181e6008181b30081030000818100008181000081c0000000000000
-- 252:000000000000000063c663c3e667c6606666c083e1c7c0076006c0e360060000
-- 253:40000000c0000000e3626665c0626265c0626265c067616583c2e0e200000000
-- 254:0000000300000081e666e381816681c08167c081c1c662816706e30300c10000
-- 255:80c00000808100008081000080038200808141008081000080c0000000000000
-- </TILES>

-- <SPRITES>
-- 000:b1e0b1c01151b16111f1007111f1b161b151b1c0000000000000000000000000
-- 001:e1f1f1e0211100112111f1e0b1f10040b1f0f140000000000000000000000000
-- 002:01c1550183c10002c7e31404e34100efd14114d7904100937080551100000000
-- 003:77c1e360b622f7f7779aa2607717a2007712a203b620a2f777c1e30300000000
-- 004:0000000000000000c1000000c900c0008fbbc0008feff0008ffff3000fff7200
-- 016:a0f0e0c0a090116040d1f1f1b171b160b1c1f1c0000000000000000000000000
-- 017:8051c0804100c101a011d1e35000e1d13051c090000000000000000000000000
-- 020:0f0070000f0070008f00f000cd00f0008d00f0000f00f0000f00f0008f007000
-- 032:f1f140400000c080d151f1d1d151c080d1514040000000000000000000000000
-- 033:f12050f0f160d001f1e0d111f160d010f12050e1000000000000000000000000
-- 036:0ffff1000ffff1000ffff1000f7cc3000c30f3000e0081000000000000000000
-- 192:eff1f100fff3f300fff3f3effff3f320fffff320fffff320fffff720ffffff20
-- 193:0000000000000000f00000008000000080000000802214008022220080222200
-- 194:000000000000e70000007e000000bd000000bd0000003c000000bd000000e700
-- 195:0e0000008fe30000cf000000ef000000ef001000ff003000ff003010ff002020
-- 208:ffffff20fff7ffeffff3ffeffff3ffeffff3f3effff3f300fff1f100ebf0f000
-- 209:80000000f0000000f022c100f0c12200f0000000000000000000000000000000
-- 210:000000000000e7e700003eff0000bdff00003eff0000bdff00003eff0000e7e7
-- 211:0000000000cf000000200000cf2000002020cfff202060002020200020202000
-- 224:00000000000000cf00010100000101cf00010100000501000005010000050300
-- 225:00000000f0000000000000007000000000000000005500000077770000220000
-- 226:000000000000e7e70000bdfe0000bd7e00007e3e0000bd7e0000bdfe0000e7e7
-- 227:202060002020efff2020efff2060cfff20ef000020ef000020cf000020000000
-- 240:0003050000010500000105000001010000010100000000efc170700000000000
-- 241:000000000000000000e3550000c1a20000000000f00000000000000000000000
-- 242:000000000000e7e70000bdff0000bd7e00007c3c0000fd1800007eff0000e7e7
-- 243:200000c02000c0e12000e1f32000f3c02000f3c0600000c0cfff000000000000
-- </SPRITES>

-- <MAP>
-- 000:203040500000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
-- 001:213141510000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
-- </MAP>

-- <WAVES>
-- 000:00000000ffffffff00000000ffffffff
-- 001:0123456789abcdeffedcba9876543210
-- 002:0123456789abcdef0123456789abcdef
-- </WAVES>

-- <SFX>
-- 000:000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000304000000000
-- </SFX>

-- <PALETTE>
-- 000:1a1c2c5d275db13e53ef7d57ffcd75a7f07038b76425717929366f3b5dc941a6f673eff7f4f4f494b0c2566c86333c57
-- </PALETTE>