Designing Games with Game Maker - YoYo Games

Draws the indicated part of subimage subimg (-1 = current) of the sprite with
the top-left corner of the part at position (x,y).
draw_background(back,x,y) Draws the background at position (x,y).
(Without color blending and no alpha transparency.)
draw_background_stretched(back,x,y,w,h) Draws the background
stretched to the indicated region.
draw_background_tiled(back,x,y) Draws the background tiled so that it
fills the entire room.
draw_background_part(back,left,top,width,height,x,y) Draws
the indicated part of the background with the top-left corner of the part at
position (x,y).
The following functions are extended functions of the ones indicated above. These extended
versions can only be used in the Pro Edition!
draw_sprite_ext(sprite,subimg,x,y,xscale,yscale,rot,color,a
lpha) Draws the sprite scaled with factors xscale and yscale and rotated
counterclockwise over rot degrees. color is the blending color (use c_white for
no blending) and alpha indicates the transparency factor with which the
images is merged with its background. A value of 0 makes the sprite
completely transparent. A value of 1 makes it completely solid. This function
can create great effect (for example partially transparent explosions).
draw_sprite_stretched_ext(sprite,subimg,x,y,w,h,color,alpha
) Draws the sprite stretched so that it fills the region with top-left corner (x,y)
and width w and height h. color is the blending color and alpha indicates the
transparency setting.
draw_sprite_tiled_ext(sprite,subimg,x,y,xscale,yscale,color
,alpha) Draws the sprite tiled so that it fills the entire room but now with
scale factors and a color and transparency setting.
draw_sprite_part_ext(sprite,subimg,left,top,width,height,x,
y,xscale,yscale,color,alpha) Draws the indicated part of subimage
subimg (-1 = current) of the sprite with the top-left corner of the part at
position (x,y) but now with scale factors and a color and transparency setting.
draw_sprite_general(sprite,subimg,left,top,width,height,x,y