diff options
Diffstat (limited to 'src/field.nim')
| -rw-r--r-- | src/field.nim | 49 |
1 files changed, 20 insertions, 29 deletions
diff --git a/src/field.nim b/src/field.nim index 384cb47..c4b73a2 100644 --- a/src/field.nim +++ b/src/field.nim @@ -5,11 +5,11 @@ type Field* = object x, y: int - lx, ly: int + lx: int lines: seq[Line] func Blank*(f: var Field, x, y: int) = - if y < f.y or y >= f.y+f.ly: # outside the field + if y < f.y or y >= f.y+f.lines.len: # outside the field return var l = addr f.lines[y-f.y] if x < l.x or x >= l.x+l.columns.len: # outside the field @@ -23,14 +23,12 @@ func Blank*(f: var Field, x, y: int) = while f.lines[i].columns.len == 0: inc i f.y += i - f.lines = f.lines[i..<f.ly] - f.ly -= i - elif y == f.y+f.ly-1: # we need to trim the trailing lines - var i = f.ly-2 + f.lines = f.lines[i..<f.lines.len] + elif y == f.y+f.lines.len-1: # we need to trim the trailing lines + var i = f.lines.len-2 while f.lines[i].columns.len == 0: dec i - f.ly = i+1 - f.lines = f.lines[0..<f.ly] + f.lines = f.lines[0..i] else: # it was a line in the middle l.columns = @[] elif x == l.x: # we need to remove leading spaces @@ -47,7 +45,7 @@ func Blank*(f: var Field, x, y: int) = # we now need to calculate the new field limits f.x = f.lines[0].x var x2 = f.lines[0].columns.len + f.lines[0].x - for i in 1..<f.ly: + for i in 1..<f.lines.len: if f.lines[i].columns.len == 0: continue if f.x > f.lines[i].x: @@ -57,14 +55,14 @@ func Blank*(f: var Field, x, y: int) = f.lx = x2-f.x func Get*(f: Field, x, y: int): int = - if y >= f.y and y < f.y+f.ly: + if y >= f.y and y < f.y+f.lines.len: let l = f.lines[y-f.y] if x >= l.x and x < l.x+l.columns.len: return l.columns[x-l.x] return int(' ') func IsIn*(f: Field, x, y: int): bool = - return x >= f.x and y >= f.y and x < f.x+f.lx and y < f.y+f.ly + return x >= f.x and y >= f.y and x < f.x+f.lx and y < f.y+f.lines.len proc Load*(filename: string): ref Field = var file: File @@ -81,14 +79,13 @@ proc Load*(filename: string): ref Field = while true: let n = file.readChars(data, 0, 4096) if n <= 0: - if f.ly == 0: + if f.lines.len == 0: if l == nil: # we got en empty file! return nil f.x = l.x if l != nil: if f.lx < l.columns.len+l.x-f.x: f.lx = l.columns.len+l.x-f.x - inc f.ly break var i = 0 while i < n: @@ -100,9 +97,9 @@ proc Load*(filename: string): ref Field = lastReadIsCR = false continue if data[i] == '\n' or data[i] == '\r': - if f.ly == 0: - if l == nil: - return nil + if f.lines.len == 0: + return nil + if f.lines.len == 1: f.x = l.x if l != nil: if f.x > l.x: @@ -111,7 +108,6 @@ proc Load*(filename: string): ref Field = f.lx = l.columns.len+l.x-f.x else: f.lines.add(Line()) - inc f.ly l = nil trailingSpaces = 0 if data[i] == '\r': @@ -141,14 +137,13 @@ proc Load*(filename: string): ref Field = else: l.columns.add(int(data[i])) inc i - f.lines = f.lines[0..<f.ly] return f func Set*(f: var Field, x, y, v: int) = if v == int(' '): f.Blank(x, y) elif y >= f.y: - if y < f.y+f.ly: # the line exists + if y < f.y+f.lines.len: # the line exists var l = addr f.lines[y-f.y] if l.columns.len == 0: # An empty line is a special case l.x = x @@ -170,8 +165,7 @@ func Set*(f: var Field, x, y, v: int) = if f.lx < l.columns.len+l.x-f.x: f.lx = l.columns.len+l.x-f.x else: # preprend columns - let oldL = l.columns.len - var newline = newSeqUninitialized[int](oldL+l.x-x) + var newline = newSeqUninitialized[int](l.columns.len+l.x-x) newline[0] = v for i in 1..<l.x-x: newline[i] = int(' ') @@ -183,23 +177,20 @@ func Set*(f: var Field, x, y, v: int) = f.lx = f.lx + f.x - x f.x = x else: # append lines - f.ly = y-f.y+1 - f.lines.setlen(f.ly) - f.lines[f.ly-1] = Line(x: x, columns: @[v]) + f.lines.setlen(y-f.y+1) + f.lines[y-f.y] = Line(x: x, columns: @[v]) if f.x > x: f.lx = f.lx + f.x - x f.x = x if f.lx < x-f.x+1: f.lx = x-f.x+1 else: # prepend lines - let newLy = f.ly+f.y-y - var newlines = newSeq[Line](newLy) + var newlines = newSeq[Line](f.lines.len+f.y-y) newlines[0] = Line(x: x, columns: @[v]) - for i in f.y-y..<newLy: + for i in f.y-y..<newlines.len: newlines[i] = f.lines[i-f.y+y] f.lines = newlines f.y = y - f.ly = newLy if f.x > x: f.lx = f.lx+f.x-x f.x = x @@ -222,4 +213,4 @@ func Step*(f: Field, v: tuple[x, y: int], d: tuple[x, y: int]): (int, int) = x = x2; y = y2 func GetSize*(f: Field): (int, int, int, int) = - return (f.x, f.y, f.lx, f.ly) + return (f.x, f.y, f.lx, f.lines.len) |