diff options
Diffstat (limited to 'chessboard.mu')
| -rw-r--r-- | chessboard.mu | 70 |
1 files changed, 35 insertions, 35 deletions
diff --git a/chessboard.mu b/chessboard.mu index d7cce788..fcaea5a7 100644 --- a/chessboard.mu +++ b/chessboard.mu @@ -2,7 +2,7 @@ # display the position after each move. # recipes are mu's names for functions -recipe main [ +def main [ open-console # take control of screen, keyboard and mouse # The chessboard recipe takes keyboard and screen objects as 'ingredients'. @@ -66,7 +66,7 @@ scenario print-board-and-read-move [ ## Here's how 'chessboard' is implemented. -recipe chessboard screen:address:shared:screen, console:address:shared:console -> screen:address:shared:screen, console:address:shared:console [ +def chessboard screen:address:shared:screen, console:address:shared:console -> screen:address:shared:screen, console:address:shared:console [ local-scope load-ingredients board:address:shared:array:address:shared:array:character <- initial-position @@ -109,7 +109,7 @@ recipe chessboard screen:address:shared:screen, console:address:shared:console - ## a board is an array of files, a file is an array of characters (squares) -recipe new-board initial-position:address:shared:array:character -> board:address:shared:array:address:shared:array:character [ +def new-board initial-position:address:shared:array:character -> board:address:shared:array:address:shared:array:character [ local-scope load-ingredients # assert(length(initial-position) == 64) @@ -129,7 +129,7 @@ recipe new-board initial-position:address:shared:array:character -> board:addres } ] -recipe new-file position:address:shared:array:character, index:number -> result:address:shared:array:character [ +def new-file position:address:shared:array:character, index:number -> result:address:shared:array:character [ local-scope load-ingredients index <- multiply index, 8 @@ -146,7 +146,7 @@ recipe new-file position:address:shared:array:character, index:number -> result: } ] -recipe print-board screen:address:shared:screen, board:address:shared:array:address:shared:array:character -> screen:address:shared:screen [ +def print-board screen:address:shared:screen, board:address:shared:array:address:shared:array:character -> screen:address:shared:screen [ local-scope load-ingredients row:number <- copy 7 # start printing from the top of the board @@ -185,7 +185,7 @@ recipe print-board screen:address:shared:screen, board:address:shared:array:addr screen <- cursor-to-next-line screen ] -recipe initial-position -> board:address:shared:array:address:shared:array:character [ +def initial-position -> board:address:shared:array:address:shared:array:character [ local-scope # layout in memory (in raster order): # R P _ _ _ _ p r @@ -242,61 +242,61 @@ container move [ ] # prints only error messages to screen -recipe read-move stdin:address:shared:channel, screen:address:shared:screen -> result:address:shared:move, quit?:boolean, error?:boolean, stdin:address:shared:channel, screen:address:shared:screen [ +def read-move stdin:address:shared:channel, screen:address:shared:screen -> result:address:shared:move, quit?:boolean, error?:boolean, stdin:address:shared:channel, screen:address:shared:screen [ local-scope load-ingredients from-file:number, quit?:boolean, error?:boolean <- read-file stdin, screen - reply-if quit?, 0/dummy, quit?, error? - reply-if error?, 0/dummy, quit?, error? + return-if quit?, 0/dummy, quit?, error? + return-if error?, 0/dummy, quit?, error? # construct the move object result:address:shared:move <- new move:type x:address:number <- get-address *result, from-file:offset *x <- copy from-file x <- get-address *result, from-rank:offset *x, quit?, error? <- read-rank stdin, screen - reply-if quit?, 0/dummy, quit?, error? - reply-if error?, 0/dummy, quit?, error? + return-if quit?, 0/dummy, quit?, error? + return-if error?, 0/dummy, quit?, error? error? <- expect-from-channel stdin, 45/dash, screen - reply-if error?, 0/dummy, 0/quit, error? + return-if error?, 0/dummy, 0/quit, error? x <- get-address *result, to-file:offset *x, quit?, error? <- read-file stdin, screen - reply-if quit?:boolean, 0/dummy, quit?:boolean, error?:boolean - reply-if error?:boolean, 0/dummy, quit?:boolean, error?:boolean + return-if quit?:boolean, 0/dummy, quit?:boolean, error?:boolean + return-if error?:boolean, 0/dummy, quit?:boolean, error?:boolean x:address:number <- get-address *result, to-rank:offset *x, quit?, error? <- read-rank stdin, screen - reply-if quit?, 0/dummy, quit?, error? - reply-if error?, 0/dummy, quit?, error? + return-if quit?, 0/dummy, quit?, error? + return-if error?, 0/dummy, quit?, error? error? <- expect-from-channel stdin, 10/newline, screen - reply-if error?, 0/dummy, 0/quit, error? - reply result, quit?, error? + return-if error?, 0/dummy, 0/quit, error? + return result, quit?, error? ] # valid values for file: 0-7 -recipe read-file stdin:address:shared:channel, screen:address:shared:screen -> file:number, quit:boolean, error:boolean, stdin:address:shared:channel, screen:address:shared:screen [ +def read-file stdin:address:shared:channel, screen:address:shared:screen -> file:number, quit:boolean, error:boolean, stdin:address:shared:channel, screen:address:shared:screen [ local-scope load-ingredients c:character, stdin <- read stdin { q-pressed?:boolean <- equal c, 81/Q break-unless q-pressed? - reply 0/dummy, 1/quit, 0/error + return 0/dummy, 1/quit, 0/error } { q-pressed? <- equal c, 113/q break-unless q-pressed? - reply 0/dummy, 1/quit, 0/error + return 0/dummy, 1/quit, 0/error } { empty-fake-keyboard?:boolean <- equal c, 0/eof break-unless empty-fake-keyboard? - reply 0/dummy, 1/quit, 0/error + return 0/dummy, 1/quit, 0/error } { newline?:boolean <- equal c, 10/newline break-unless newline? error-message:address:shared:array:character <- new [that's not enough] print screen, error-message - reply 0/dummy, 0/quit, 1/error + return 0/dummy, 0/quit, 1/error } file:number <- subtract c, 97/a # 'a' <= file <= 'h' @@ -307,7 +307,7 @@ recipe read-file stdin:address:shared:channel, screen:address:shared:screen -> f print screen, error-message print screen, c cursor-to-next-line screen - reply 0/dummy, 0/quit, 1/error + return 0/dummy, 0/quit, 1/error } { below-max:boolean <- lesser-than file, 8 @@ -315,32 +315,32 @@ recipe read-file stdin:address:shared:channel, screen:address:shared:screen -> f error-message <- new [file too high: ] print screen, error-message print screen, c - reply 0/dummy, 0/quit, 1/error + return 0/dummy, 0/quit, 1/error } - reply file, 0/quit, 0/error + return file, 0/quit, 0/error ] # valid values: 0-7, -1 (quit), -2 (error) -recipe read-rank stdin:address:shared:channel, screen:address:shared:screen -> rank:number, quit?:boolean, error?:boolean, stdin:address:shared:channel, screen:address:shared:screen [ +def read-rank stdin:address:shared:channel, screen:address:shared:screen -> rank:number, quit?:boolean, error?:boolean, stdin:address:shared:channel, screen:address:shared:screen [ local-scope load-ingredients c:character, stdin <- read stdin { q-pressed?:boolean <- equal c, 8/Q break-unless q-pressed? - reply 0/dummy, 1/quit, 0/error + return 0/dummy, 1/quit, 0/error } { q-pressed? <- equal c, 113/q break-unless q-pressed? - reply 0/dummy, 1/quit, 0/error + return 0/dummy, 1/quit, 0/error } { newline?:boolean <- equal c, 10 # newline break-unless newline? error-message:address:shared:array:character <- new [that's not enough] print screen, error-message - reply 0/dummy, 0/quit, 1/error + return 0/dummy, 0/quit, 1/error } rank:number <- subtract c, 49/'1' # assert'1' <= rank <= '8' @@ -350,7 +350,7 @@ recipe read-rank stdin:address:shared:channel, screen:address:shared:screen -> r error-message <- new [rank too low: ] print screen, error-message print screen, c - reply 0/dummy, 0/quit, 1/error + return 0/dummy, 0/quit, 1/error } { below-max:boolean <- lesser-or-equal rank, 7 @@ -358,14 +358,14 @@ recipe read-rank stdin:address:shared:channel, screen:address:shared:screen -> r error-message <- new [rank too high: ] print screen, error-message print screen, c - reply 0/dummy, 0/quit, 1/error + return 0/dummy, 0/quit, 1/error } - reply rank, 0/quit, 0/error + return rank, 0/quit, 0/error ] # read a character from the given channel and check that it's what we expect # return true on error -recipe expect-from-channel stdin:address:shared:channel, expected:character, screen:address:shared:screen -> result:boolean, stdin:address:shared:channel, screen:address:shared:screen [ +def expect-from-channel stdin:address:shared:channel, expected:character, screen:address:shared:screen -> result:boolean, stdin:address:shared:channel, screen:address:shared:screen [ local-scope load-ingredients c:character, stdin <- read stdin @@ -542,7 +542,7 @@ F read-move-file: routine failed to pause after coming up (before any keys were ] ] -recipe make-move board:address:shared:array:address:shared:array:character, m:address:shared:move -> board:address:shared:array:address:shared:array:character [ +def make-move board:address:shared:array:address:shared:array:character, m:address:shared:move -> board:address:shared:array:address:shared:array:character [ local-scope load-ingredients from-file:number <- get *m, from-file:offset |