# Terrain movement rules, passability and costs configuration
# All gameplay values and parameters are fully configurable.

# Classification thresholds
water_height_threshold: 6            # Raw heightmap elevation value (< 6 is water)
coast_beach_width_km: 0.022          # Width of shoreline sandy beach transition above water level (in km)
mountain_rock_height_km: 2.3        # Height in km >= 2.3 is rocky mountain
snow_height_km: 3.1                 # Altitude in km >= 3.1 is high peak snow
polar_snow_line_enabled: true       # Whether latitude reduces snowline altitude
polar_snow_line_base_km: 2.5        # Base snowline at temperate latitudes
polar_snow_factor_start: 0.40       # Latitude distFromCenter where polar cooling starts (matches simple.frag)
polar_snow_factor_end: 0.85         # Latitude distFromCenter where sea-level snowline is reached (matches simple.frag)
polar_land_ice_threshold: 0.72      # Latitude distFromCenter where sea-level polar ice starts (matches simple.frag)

# Slope and elevation movement penalties
# Elevation difference (deltaH in km) between hex centers
uphill_slope_multiplier: 4.0         # Penalty added per km of elevation gained (uphill)
downhill_slope_bonus_multiplier: 2.0 # Bonus deducted per km of elevation lost (downhill)
min_step_cost: 0.25                  # Minimum possible step cost after downhill bonus
max_climbable_slope_km: 1.2          # Maximum elevation rise per hex step; higher slopes are impassable cliffs

# Movement base costs per terrain type (1.0 = normal base cost, higher values = slower traversal)
movement_costs:
  grasland: 1.0
  bos: 2.0
  steen: 2.5
  sahara: 1.5
  tundra: 1.5
  red_canyon: 2.0
  sneeuw: 3.0
  water: 1.0

# Movement domains:
# - land: standard ground units (settler, builder, warrior, slinger, etc.)
#   impassable_terrains: list of terrain types land units CANNOT enter or cross.
# - naval: ships and sea vessels (galley, etc.)
#   passable_terrains: ships can ONLY move on these terrains (water).
domains:
  land:
    impassable_terrains:
      - water
      - sneeuw
  naval:
    passable_terrains:
      - water