Mia's Coin Hunt

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 small third-person 3D collectible game titled “Mia’s Coin Hunt.” The player controls a rigged character named Mia using the provided local asset `assets/Rig_model_mia.glb`. Place Mia at the center of a flat square green grass ground measuring approximately 26 x 26 world units. Use a third-person follow camera positioned about 7.5 units behind the character and 1.6 units high, with mouse-look enabled after clicking the canvas; use a perspective view with a 68-degree field of view. The scene should have a light blue sky/background and blue atmospheric fog beginning around 12 units and fading by about 38 units. Use soft ambient and hemisphere illumination plus a warm directional sun from above/right, with shadows enabled on Mia and all environment objects and received by the ground.

The core goal is to collect all six large gold coin pickups scattered around the arena. Arrange the six coins in a loose circular pattern centered on the origin: for coin index i from 0 to 5, place it at angle i * 60 degrees, with radius 4.5 for even indices and 5.3 for odd indices. Position each coin about 0.65 units above the ground, scale it to 1.1, and make it continuously rotate around its vertical axis while bobbing up and down by about 0.18 units. A coin is collected when Mia comes within roughly 1.9 units; remove it immediately, increment the score, and play a short cheerful pickup sound. The HUD in the upper-left must display `Coins: 0 / 6`, updating as coins are collected. When all six are collected, stop normal play and show a centered dark translucent win overlay with the title `You Win!`, text such as `Mia collected all 6 coins! Great job.`, and a `Play Again` button.

Dress the arena with four stylized low-poly trees, one at each corner-like location (-8,-8), (8,-8), (-8,8), and (8,8), using a tree model with rounded green foliage and a brown trunk. Add five dark, chunky stone/cube obstacles at coordinates (-5,4), (5,4), (0,-7), (-4,-4), and (4,-5), each scaled to 0.75. Scatter 14 small grass patch models at randomized-looking positions across the interior, with varied scale between about 0.7 and 1.3. Keep the visual style simple, colorful, low-poly, and similar to a small stylized park: green ground, dark stone blocks, rounded trees, bright gold coins, and strong long shadows.

Keep Mia’s movement responsive and character-focused. Support WASD and arrow keys for movement, Space for jumping, Shift for running, and mouse look when the canvas is clicked. Use a normal movement speed around 4.5, jump speed around 9, and gravity around -22. Play Mia’s idle animation when standing, a walk/run animation while moving, and a jump animation while jumping or falling; blend/fade between animations. Keep the player inside the square play area with invisible boundary walls around x/z = +/-13, approximately 5 units high. If Mia falls below y=-3, end the run and show a dark overlay titled `Fell Off` with text `Try again - stay on the ground!` and the same `Play Again` button. Restart must reset the score to zero, return Mia to (0,0,0), restore her initial facing direction, respawn all six coins, hide the overlay, and resume play. Include a bottom-left instruction hint reading `WASD / Arrow keys • Space jump • Shift run • Mouse look (click canvas)`.