factor/extra/tetris/gl/gl.factor

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1.4 KiB
Factor

! Copyright (C) 2006, 2007 Alex Chapman
! See http://factorcode.org/license.txt for BSD license.
USING: kernel sequences arrays math math.vectors namespaces
opengl opengl.gl ui.render ui.gadgets tetris.game tetris.board
tetris.piece tetris.tetromino ;
IN: tetris.gl
#! OpenGL rendering for tetris
: draw-block ( block -- )
dup { 1 1 } v+ gl-fill-rect ;
: draw-piece-blocks ( piece -- )
piece-blocks [ draw-block ] each ;
: draw-piece ( piece -- )
dup tetromino-colour gl-color draw-piece-blocks ;
: draw-next-piece ( piece -- )
dup tetromino-colour clone 0.2 3 pick set-nth gl-color draw-piece-blocks ;
! TODO: move implementation specific stuff into tetris-board
: (draw-row) ( x y row -- )
>r over r> nth dup
[ gl-color 2array draw-block ] [ 3drop ] if ;
: draw-row ( y row -- )
dup length -rot [ (draw-row) ] 2curry each ;
: draw-board ( board -- )
board-rows dup length swap
[ dupd nth draw-row ] curry each ;
: scale-tetris ( width height tetris -- )
[ board-width swap ] keep board-height / -rot / swap 1 glScalef ;
: (draw-tetris) ( width height tetris -- )
#! width and height are in pixels
GL_MODELVIEW [
[ scale-tetris ] keep
dup tetris-board draw-board
dup tetris-next-piece draw-next-piece
tetris-current-piece draw-piece
] do-matrix ;
: draw-tetris ( width height tetris -- )
origin get [ (draw-tetris) ] with-translation ;