135 TinyFarm
135 : TinyFarm
- Author: Erika Ramirez
- Description: 18644 Final Project
- GitHub repository
- Open in 3D viewer
- Open in VGA Playground
- Clock: 25000000 Hz
How it works
TinyFarm is a small hardware-based farming game implemented in SystemVerilog. The design maintains internal state for four farm fields, each of which can be 1. empty, 2. growing a crop, or 3. ready to harvest. When a crop is planted, a growth timer begins and decreases on each game tick. Once the timer reaches zero, the crop becomes ready to harvest.
The system also includes an inventory and a customer order generator. The player must grow and harvest crops to fulfill orders before their timers expire. A background game clock controls crop growth and order countdown independently of user actions.
The design outputs a VGA signal (RGB222 format) that visually displays the farm grid, crop states, and game status. User inputs control field selection, crop selection, and actions such as planting, watering, harvesting, and fulfilling orders.
How to test
Use the input pins to control the game:
Mode select (ui[1:0])
- 00 = View
- 01 = Plant
- 10 = Water
- 11 = Harvest Field select (ui[3:2])
- Selects one of the four farm fields Crop select (ui[5:4])
- 00 = Wheat
- 01 = Corn
- 10 = Carrot
- 11 = Tomato ui[6] = Action button
- Performs the selected action (plant, water, or harvest) ui[7] = Fulfill button
- Attempts to fulfill the current order using inventory
Gameplay flow:
- Select a field and enter Plant mode
- Choose a crop and press Action to plant it
- Wait for the crop to grow (or use Water mode to speed it up)
- When ready, use Harvest mode and press Action
- Press Fulfill to complete an order when you have enough crops
External hardware
This project uses a Tiny VGA PMOD (RGB222 interface) to display the game output. The VGA signals are mapped to the output pins and can be connected directly to the Tiny VGA PMOD for visualization on a monitor.
IO
| # | Input | Output | Bidirectional |
|---|---|---|---|
| 0 | mode_sel[0] | vga_r[1] | |
| 1 | mode_sel[1] | vga_g[1] | |
| 2 | field_sel[0] | vga_b[1] | |
| 3 | field_sel[1] | vsync | |
| 4 | crop_sel[0] | vga_r[0] | |
| 5 | crop_sel[1] | vga_g[0] | |
| 6 | action_btn | vga_b[0] | |
| 7 | fulfill_btn | hsync |