game-loop

Vocabulary

game.loop

Class description

Objects of the game-loop class manage game loops. See Game loops for an overview of the game loop library. To construct a game loop, use <game-loop>. To start and stop a game loop, use the start-loop and stop-loop words.

The tick-delegate and draw-delegate slots of a game loop object determine where the loop sends its tick* and draw* events. These slots can be changed while the game loop is running.

Definition

USING: kernel math ;

IN: game.loop

TUPLE: game-loop
    { tick-interval-nanos integer read-only initial: 0 }
    tick-delegate draw-delegate
    { running? boolean initial: f } { tick# integer initial: 0 }
    { frame# integer initial: 0 } tick-timer draw-timer
    benchmark-data ;

Methods

USING: destructors game.loop ;

M: game-loop dispose stop-loop ;


USING: accessors combinators game.loop game.loop.benchmark
game.loop.private kernel sequences tools.time.struct ;

M: game-loop record-benchmarking
    [
        [ [ ( loop -- ) call-effect ] with-benchmarking ]
        [ drop tick#>> ] [ drop frame#>> ] 2tri
        <game-loop-benchmark>
    ] [ drop ensure-benchmark-data ] 2bi push ;