Soba-Eating Game Prototype — Progress Update

Last Time

In the previous article, I wrote about wanting to make a soba-eating game in the style of “菜織のはいぱぁ う・ドォン”.

This time, continuing from that, I actually built a prototype.

Prototype

Before preparing images, I first made it possible to verify behavior using rectangles only.

I built it for the web, so you can play it right away in your browser.

Soba-Eating Game Prototype

Controls:

• SPACE: Start game
• Arrow keys: Move
• Z: Eat
• X: Discard / Cancel while eating
• R: Restart

Specifications

I’ll summarize the current specs while I’m at it.

Basics

Item	Value
Screen size	640 x 480 px
Time limit	60 s
Clear condition	Eat 5 bowls of soba

Player

• Size: 32 x 48 px
• Move speed: 4 px/frame

Food

Type	Spawn rate	Time to eat	Count	After-eating stun
Soba (Regular)	40%	1 s	1 bowl	1 s (“Gochisousama”)
Soba (Large)	25%	2 s	2 bowls	1 s (“Gochisousama”)
Soba (Extra Large)	15%	3 s	3 bowls	1 s (“Gochisousama”)
Udon	20%	2 s	0	2 s (“That’s the wrong one!”)

• Spawn location: On the counter (3 slots)
• Spawn interval: 3 s
• Despawn: retracts 3 s after appearing
• Discard: Press X in front of the counter to discard immediately

Cancel While Eating

• Press X while eating to attempt a cancel
• Success rate: first half (up to 50%) → 80%; second half → 30%
• On failure, you’re forced to finish eating

Enemies

• Size: 32 x 48 px
• Move speed: 1.5 px/frame
• Max count: 2
• Spawn interval: 2.5 s
• Movement: straight from left edge → right edge or right → left (avoids obstacles by moving up/down)
• Hitbox: toward the center (collision checked 8 px in from left/right, 12 px up/down)
• On contact: player stunned for 0.6 s

Obstacles (Tables)

• 3 placed (left, right, lower center)
• Size: 80 x 60 px
• Neither player nor enemies can pass through

Counter

• Size: 300 x 40 px
• Placed at the top-center of the screen
• Eating detection area: around the counter (+20 px left/right, +80 px downward)

State Transitions

normal → eating（Z押下）→ success/fail → normal
       → stunned（敵接触）→ normal

Not Implemented / Next

• Preview of what’s next (NEXT indicator)
• Clock display (a “until 1 p.m.”-style presentation)
• Remaining amount indicator (stomach gauge)
• Replace images
• Stage system (adjust clear amount, enemy count, time)

I’ll probably start by adding graphics and tidying up the visuals.