Castle Defense Game / Work in progress

A tile-based defense RTS built with Odin and Raylib.

Requirements

Odin Compiler
Raylib (included with Odin's vendor collection)

Building

# Navigate to the project directory
cd "castle defense"

# Build the game
odin build src -out:rightward_hold.exe

# Or build and run
odin run src -out:rightward_hold.exe

How to Play

Objective

Defend your Town Core (right side) from waves of enemies spawning from the left. Survive 20 waves to win!

Controls

Key	Action
B	Open/Close Build Menu
1-4	Train Units (Infantry/Archer/Cavalry/Siege)
H/J/K	Hire Heroes (Tank/DPS/Support)
SPACE	Start Wave Early
ESC	Cancel/Pause
R	Rally units to mouse position
Left Click	Place building (when selected)
Right Click	Cancel building selection
Shift + Click	Place multiple buildings

Resources

Gold - Used for units, heroes, and some buildings
Wood - Used for buildings and defenses
Food - Required to sustain your army (upkeep every 10 seconds)
Supply - Limits your army size (increased by building Houses)

Buildings

Building	Cost	Function
House	50W	+10 Supply capacity
Gold Mine	100G 50W	Produces gold (must be adjacent to mountains)
Lumber Mill	50G 25W	Produces wood
Farm	50G 30W	Produces food
Barracks	150G 100W	Trains Infantry and Siege
Archery Range	175G 125W	Trains Archers
Stable	250G 150W	Trains Cavalry
Basic Tower	100G 75W	Single-target defense
Advanced Tower	250G 150W	AoE defense
Wall	40W	Blocks enemy paths
Research Hall	300G 200W	Unlocks upgrades

Units

Unit	Cost	Supply	Role
Infantry	50G	2	Melee frontline
Archer	75G	3	Ranged support
Cavalry	150G	5	Fast, powerful
Siege	300G	8	Long-range, slow

Heroes (No Supply Cost!)

Hero	Cost	Role
Tank	500G	High HP, holds chokepoints
DPS	600G	High damage, wave clear
Support	550G	Heals nearby allies

Heroes:

Level up by killing enemies
Gain stats on level up
Respawn 30 seconds after death

Enemy Types

Enemy	Appearance	Behavior
Basic	Red circle	Marches to core
Armored	Dark red	High HP, armor
Assassin	Purple	Targets economy buildings
Siege	Large brown	Targets walls and towers
Flyer	Yellow triangle	Ignores walls

Project Structure

castle defense/
├── src/
│   ├── main.odin      # Entry point and game loop
│   ├── types.odin     # All data structures and constants
│   ├── game.odin      # Core game systems
│   └── render.odin    # Rendering and UI
├── gamespecs.md       # Original game specification
└── README.md          # This file

License

MIT License - Feel free to modify and use!

castle-defense