Line of Sight is a fundamental game mechanic that determines what areas and entities the hero can see and interact with.

• Line of sight determines which tiles are visible to the hero
• The hero can typically see in a circular radius around their position
• Walls and other solid obstacles block line of sight
• Some effects can extend or restrict the hero's line of sight

• Movement: The hero can only move to adjacent visible tiles
• Ranged Attacks: Ranged weapons require an unobstructed line of sight to the target
• Spells: Many spells require line of sight to affect targets
• Detection: Enemies and items are only visible when in line of sight

• Light sources can affect line of sight in dark areas
• Some abilities or items can grant extended vision
• Darkness or fog effects can reduce line of sight
• Certain terrain features may block or redirect line of sight
• Implemented using the ShadowCaster class which calculates visibility from a central point

• The game maintains a boolean array `fieldOfView` for each level which tracks visibility
• Uses ShadowCaster algorithm to determine visible cells from character position
• LOS blocking terrain is flagged using TerrainFlags.LOS_BLOCKING
• Level objects can also block line of sight with the `losBlocker()` method

• Core implementation: ShadowCaster.java
• Level visibility: updateFieldOfView in Level.java
• LOS blocking flags: TerrainFlags.java
• Level objects LOS: losBlocker method

• Range - Distance mechanics for attacks
• Ranged Weapons - Weapons affected by line of sight
• Spells - Many spells require line of sight
• Light - Related to visibility