FNA 2.5D Isometric Factory

This is a small FNA prototype of a 2.5D isometric automation factory game. It includes miners, conveyors, smelters, storage, power, research, and a guided tutorial overlay.

Gameplay

• Miners periodically produce Ore
• Conveyors move items along their direction
• Smelters consume Ore and output Plates
• Storage absorbs items and counts them

Controls

• Arrow keys / WASD: pan camera
• Mouse wheel / +/-: zoom
• Left click: place current tool
• Right click: rotate tile direction
• 1: conveyor
• 2: miner
• 3: smelter
• 4: storage
• 5: splitter
• 6: merger
• 7: assembler
• 8: lab
• 9: generator
• 0: erase
• R: rotate current placement direction
• Space: pause / resume
• Esc / F1: open settings
• F2: toggle tutorial overlay

You can also use the top toolbar to pick tools and rotate the placement direction.

Gameplay / Goals

• Each placed building costs credits. Start with 50 credits.
• Ore delivered to storage gives +1 credit, Plate gives +5 credits.
• Goals are based on total Plates stored (20/50/100/200). Completing a goal grants +25 credits.
• The game auto-pauses when the window loses focus and resumes when it regains focus.

UI / Audio

• Bottom taskbar shows credits, plates, science, power %, goal target, research target, and event timer.
• Simple synthesized sound effects for place, rotate, error, and goal completion.
• Isometric tiles now draw elevation/shadows for a more 2.5D look.
• Hover over toolbar/taskbar icons for tooltips explaining each button and rule.

Settings / Tutorial

• Settings: toggle grid, ore highlight, tooltips, auto-pause, SFX volume, language, tutorial
• Tutorial: step-by-step onboarding overlay with automatic progress

Expanded Factory Systems

• Multi-stage production: Ore -> Plate (Smelter) -> Gear (Assembler) -> Science (Lab).
• Splitter/Merger for routing and combining belts (unlock via research).
• Power system: Generators produce power; machines consume power. Low power slows production.
• Research points earned by delivering Science. Research unlocks Splitter, Merger, Assembler, Generator, Fast Conveyor.
• Random events: Demand Surge increases plate value; Power Outage reduces power output.
• Resource deposits: Miners only work on ore nodes (highlighted on empty tiles).

The window title shows total stored items, current tool, direction, and pause status.

Run

1. Install .NET 8 SDK
2. Build and run:
   • dotnet build
   • dotnet run

FNA requires native dependencies (SDL3 / FNA3D, etc.). If you hit native library errors, place the required libraries next to the output or follow the FNA documentation for setup.

Files

• Program.cs: entry point
• Game1.cs: main loop, render, input, simulation
• GameTypes.cs: enums and data structures
• InputState.cs: input edge detection
• Camera2D.cs: simple camera data