This topic is for the purpose of discussing #7843: Cephla's NES KUBO "warps" in 00:02.50

By looking at Speedrun.com, this seems to beat the RTA record by like a second or so.

src ends on the 'Bravo' screen which takes 56 frames from the final input to appear and that doesn't include the 12 frames between booting up the game and pressing start, initiating the black screen, which the rta run starts from. By rta standards this is a 3.233 too

huh this isn't necessarily related to the submission nor does it help speed-wise but I kinda found a way to play as an enemy correction: enemies lmao correction 2: and the chest correction 3: and a projectile

can confirm this to be perfect. https://share.icloud.com/photos/0d8p4Th8rXqr9AYaTR38rxReA

I'm not quite sure this is a GEG. GEG tends to be quite literal in its name: The run uses a glitch that ends the game, calling it in an unnatural way compared to how the game intended players to reach it. This run still triggers the ending in the intended way by collecting the diamond, it just cuts out a couple dozen seconds of walking. This qualifies more as a major skip to me, and given the published run already uses OoB movement to skip screens, that puts both runs in an interesting spot where they're closer to competing with each other in the major skip branch than being considered separate. Classic case of "I could watch the TAS thousands of times over in the time it takes to figure out what to do with it".

The difference I was able to formulate is that the published run uses screen-warp to get to the other side of the screen, which makes the character appear in the next room, because the previous room's exit has been hit by screen-warping. But it doesn't have teleportation across different rooms like in this movie. I'll check what's happening in the code here...

It's a warp. It's a part of the level layout, and only appears in the first room, as a block with ID of 4. The game explicitly checks if you're touching it, and if you do, it sends you directly to the last room.

Language: asm6502
collision:
A:04 X:00 Y:00 S:F9 P:nvUbdIzc       $1F:E5AF: 48        PHA
A:04 X:00 Y:00 S:F8 P:nvUbdIzc        $1F:E5B0: A5 D6     LDA $D6 = #$1C
A:1C X:00 Y:00 S:F8 P:nvUbdIzc        $1F:E5B2: 85 D7     STA $D7 = #$1C
A:1C X:00 Y:00 S:F8 P:nvUbdIzc        $1F:E5B4: A0 14     LDY #$14
A:1C X:00 Y:14 S:F8 P:nvUbdIzc        $1F:E5B6: 20 19 C6  JSR $C619
A:1C X:00 Y:14 S:F6 P:nvUbdIzc          $1F:C619: 84 D6     STY $D6 = #$1C
A:1C X:00 Y:14 S:F6 P:nvUbdIzc          $1F:C61B: A5 D6     LDA $D6 = #$14
A:14 X:00 Y:14 S:F6 P:nvUbdIzc          $1F:C61D: 29 1F     AND #$1F
A:14 X:00 Y:14 S:F6 P:nvUbdIzc          $1F:C61F: 05 DE     ORA $DE = #$00
A:14 X:00 Y:14 S:F6 P:nvUbdIzc          $1F:C621: 8D 00 C0  STA $C000 = #$78
A:14 X:00 Y:14 S:F6 P:nvUbdIzc          $1F:C624: 60        RTS (from $C619) ----------------------------
A:14 X:00 Y:14 S:F8 P:nvUbdIzc        $1F:E5B9: 8A        TXA
A:00 X:00 Y:14 S:F8 P:nvUbdIZc        $1F:E5BA: 8D 8F 06  STA $068F = #$00
A:00 X:00 Y:14 S:F8 P:nvUbdIZc        $1F:E5BD: 68        PLA
A:04 X:00 Y:14 S:F9 P:nvUbdIzc       $1F:E5BE: A8        TAY
A:04 X:00 Y:04 S:F9 P:nvUbdIzc       $1F:E5BF: B9 64 82  LDA $8264 colPtrTableHigh,Y @ $8268 = #$D0
A:D0 X:00 Y:04 S:F9 P:NvUbdIzc       $1F:E5C2: 85 4A     STA $4A collision routine = #$B0
A:D0 X:00 Y:04 S:F9 P:NvUbdIzc       $1F:E5C4: B9 74 82  LDA $8274 colPtrTableLow,Y @ $8278 = #$81
A:81 X:00 Y:04 S:F9 P:NvUbdIzc       $1F:E5C7: 85 4B     STA $4B = #$8B
A:81 X:00 Y:04 S:F9 P:NvUbdIzc       $1F:E5C9: 20 CF E5  JSR $E5CF
Breakpoint 2 Hit at $E5CF: $E5CF:EC--X- Condition:K==#1F
A:81 X:00 Y:04 S:F7 P:NvUbdIzc         $1F:E5CF: 6C 4A 00  JMP ($004A collision routine) = $81D0 warp
warp:
A:81 X:00 Y:04 S:F7 P:NvUbdIzc         $14:81D0: E4 6A     CPX $6A = #$00
A:81 X:00 Y:04 S:F7 P:nvUbdIZC         $14:81D2: D0 2C     BNE $8200 rts
A:81 X:00 Y:04 S:F7 P:nvUbdIZC         $14:81D4: A9 C0     LDA #$C0
A:C0 X:00 Y:04 S:F7 P:NvUbdIzC         $14:81D6: 09 01     ORA #$01
A:C1 X:00 Y:04 S:F7 P:NvUbdIzC         $14:81D8: 09 40     ORA #$40
A:C1 X:00 Y:04 S:F7 P:NvUbdIzC         $14:81DA: 8D 07 06  STA $0607 = #$00
A:C1 X:00 Y:04 S:F7 P:NvUbdIzC         $14:81DD: A9 01     LDA #$01
A:01 X:00 Y:04 S:F7 P:nvUbdIzC         $14:81DF: 8D 08 06  STA $0608 = #$01
A:01 X:00 Y:04 S:F7 P:nvUbdIzC         $14:81E2: AD 95 06  LDA $0695 warp? = #$25
A:25 X:00 Y:04 S:F7 P:nvUbdIzC         $14:81E5: 8D B9 06  STA $06B9 room1 = #$32
A:25 X:00 Y:04 S:F7 P:nvUbdIzC         $14:81E8: 8D BA 06  STA $06BA room2 = #$32

Download KuboBG.lua

Language: lua
while true do
--	local x = memory.readbyte(0x0420)
--	local y = memory.readbyte(0x0440)
--	gui.text(x,y,"O")	
	local base = 0x0320
	for x=0,15 do
		for y=0,12 do
			local typ = memory.readbyte(base+y*16+x)
			if typ ~= 0 then
				local color
				if typ == 1 then color = 0xffffffff end -- wall
				if typ == 3 then color = 0xffff00ff end -- end trigger
				if typ == 4 then color = 0xffff0000 end -- warp
				if typ == 5 then color = 0xffff8800 end -- chest
				gui.drawBox(x*16,y*16+24,x*16+15,y*16+24+15,color)
				gui.pixelText(x*16+2,y*16+24+2,typ,color)
			end
		end
	end
	emu.frameadvance()
end

That does just make it look even more like it was intentionally placed there and it wasn't just mistakenly turned into a warp block that coincidentally warped Kubo to the gem room, unfortunately, and I'm becoming more certain it is just a debug feature after all (and an odd one at that). I don't know, I'll see what others have to say.

More like an easter egg. I guess we just have to change the label to "warps" and give to the published movie "warpless".

I guess we just have to change the label to "warps" and give to the published movie "warpless".

Looking back at the published run and re-understanding what it does, this option makes sense. This is a clear warp, and the published run's screen transitions are all "in order" despite some of them being triggered from the opposite side of the screen.

This movie has been published. The posts before this message apply to the submission, and posts after this message apply to the published movie. ---- [5001] NES KUBO "warps" by Cephla in 00:02.50