Ore Cart

Cinevva's analyzer read this game's design doc and its source, then wrote the brief below. "Make your own" hands it to the game creator as your opening message, so you start from a real spec rather than a one-line idea.

Create a playable 3D third-person mining game titled “Ore Cart.” Use an elevated, slightly angled perspective camera that follows the player smoothly from behind and above (camera roughly 10.6 units high and 9.7 units behind the player), looking toward the player and the ground ahead. The world is a small circular mining yard about 18 units in radius, with a dark slate-blue ground, foggy dark blue background, soft shadows, and scattered low-poly boundary rocks around the perimeter. A brown dirt path, about 3.2 units wide and 15.8 units long, runs through the center toward the selling cart.

The player is a simple low-poly miner made from procedural geometry: a yellow capsule-like body, a blue partial-sphere helmet, a small glowing yellow helmet lamp, and a visible brown-handled silver pickaxe. Start the player near the front/southern end of the path at approximately (0, 0, 5.5). Allow movement with WASD and arrow keys, plus a mobile virtual joystick in the lower-left. Normalize diagonal movement, rotate the miner in the direction of travel, and constrain the player to a circular radius of about 16.2 units.

Place a wooden mine cart/sell station at approximately (0, 0, -8.4), using a low-poly fantasy-town cart model when available or a fallback wooden box cart with four dark wheels. Surround the cart with a thin glowing pale-green circular interaction ring. The player can sell only when within 2.2 units of the cart. Place nine crystal ore deposits around the yard at these approximate x,z coordinates: (-6.8,-4.5), (-3.9,-6.3), (4.6,-5.7), (7.1,-2.6), (-7.2,1.6), (-4.3,3.8), (3.1,4.6), (7.0,3.1), and (0.2,-1.4). Use low-poly rocky crystal models with visible colored crystals (prefer the Kenney Space Kit rock-crystals model, or a similar low-poly rock/crystal fallback). Deposits should rotate subtly while active and cast shadows.

The core loop is: walk near a crystal, mine it into the backpack, walk back to the cart, sell the load for cash, and buy upgrades. A crystal is mineable when the player is within 2 units of the nearest active deposit. Press Space or tap the large yellow MINE button to mine. Each mining action takes a cooldown of 0.72 seconds at pickaxe level 1 and grants 2 ore units at level 1; each action subtracts that amount from the deposit and the backpack. Pickaxe level increases mining power by 1 ore per action and reduces mining time by 0.11 seconds per level, down to a minimum of 0.22 seconds. Do not mine if the backpack is full or no active deposit is nearby. Each deposit starts with 16, 23, or 30 units depending on its index (16 + index modulo 3 times 7), has a maximum equal to that amount, and disappears visually when empty. Empty deposits respawn at full capacity after 7.5 seconds. Make the pickaxe visibly swing during mining and play a subtle click/interface sound if possible.

The backpack starts at capacity 12. Backpack upgrades increase capacity by 10 per level. Every ore unit sells for $8; when close to the cart, pressing E or tapping the green SELL button converts all carried ore to money and empties the backpack. Start with $0, pickaxe level 1, backpack level 1, and speed/boots level 1. Base movement speed is 5.0 and each boots upgrade adds 0.9 movement speed.

Include a persistent responsive HUD over the 3D scene. At the top show the gold script-like title “Ore Cart,” then dark translucent rounded status pills for “Money: $0,” “Bag: 0/12,” “Power Lv 1,” and “Speed Lv 1.” In the upper-right on desktop, and repositioned above the controls on narrow mobile screens, show a dark translucent rounded “Upgrade Stand” panel with three rows and Buy buttons: Pickaxe (“Mine faster + bigger chunks,” starting cost $60), Backpack (“Carry more ore,” starting cost $80), and Boots (“Move faster,” starting cost $55). Pickaxe upgrade cost increases by $70 each level, backpack cost by $85 each level, and boots cost by $60 each level. Disable Buy buttons when money is insufficient, and deduct the current cost upon purchase. Upgrades can be bought from the visible upgrade panel without requiring a separate interaction zone.

At the bottom-right show large rounded action buttons: yellow MINE and green SELL. Disable MINE when no ore is nearby, the backpack is full, or mining is cooling down; disable SELL unless near the cart with ore carried. On mobile, show a large translucent circular joystick at bottom-left with a white draggable knob. Display contextual guidance such as “WASD / arrows or joystick to move. Mine crystals, sell at the cart, then buy upgrades,” “Crystal nearby: press MINE or Space,” and “At the cart: press SELL or E to cash out [amount] ore for $[value].” Show short-lived gold notification banners for actions such as mining ore, mining out a deposit, selling ore, backpack full, and successful upgrades. Use a clean, polished low-poly arcade style with dark navy UI panels, white bold Inter-like text, gold/yellow highlights, cyan/blue upgrade accents, and soft shadows. Make the layout responsive for portrait mobile play without hiding the 3D gameplay.