entity.h File Reference

Entities: the things of a level that live (barrels that explode, trigger zones, relays, doors, enemies...). They are read from a level (sections ENTI, PROP and LINK, see Documentation/level_format.md). More...

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Detailed Description

Entities: the things of a level that live (barrels that explode, trigger zones, relays, doors, enemies...). They are read from a level (sections ENTI, PROP and LINK, see Documentation/level_format.md).

Author

Johannes Fetz

Remarks

Module JO_COMPILE_WITH_LEVEL_MODULE = 1 in the makefile (and JO_COMPILE_WITH_EFFECTS_MODULE = 1 for the fire, the smoke, the flash and the shake of the explosions, see effects.h)

• An entity has a class: its behavior. The engine has the generic classes (explosive, trigger, relay...), the game registers its own classes with jo_entity_register_class() before jo_entities_load()
• Events and actions: when something happens to an entity (EVENT_DEATH, EVENT_ENTER...), the links of the level send actions to other entities (ACTION_DAMAGE, ACTION_TRIGGER...), with a delay. The game doesn't wire anything
• Damage: health, EVENT_DAMAGE, EVENT_DEATH, damage around a point (the explosions damage the other barrels: chain reactions); the damage of the player is given to the game (jo_entities_set_area_damage_callback())
• Only the entities near the player (or that wait for something) are updated