diff options
Diffstat (limited to 'src/field.nim')
| -rw-r--r-- | src/field.nim | 133 |
1 files changed, 52 insertions, 81 deletions
diff --git a/src/field.nim b/src/field.nim index e94dba7..71eaf2c 100644 --- a/src/field.nim +++ b/src/field.nim @@ -66,84 +66,10 @@ func Get*(f: Field, x, y: int): 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.lines.len -proc Load*(filename: string): ref Field = - var file: File - if not open(file, filename): - return nil - defer: file.close() - var f: ref Field - new(f) - var l: ptr Line - var leadingSpaces = 0 - var trailingSpaces = 0 - var data: array[4096, char] - var lastReadIsCR = false - while true: - let n = file.readChars(data) - if n <= 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 - break - var i = 0 - while i < n: - if data[i] == char(12): - inc i - continue - if lastReadIsCR and data[i] == '\n': - inc i - lastReadIsCR = false - continue - if data[i] == '\n' or data[i] == '\r': - if f.lines.len == 0: - return nil - if f.lines.len == 1: - f.x = l.x - if l != nil: - if f.x > l.x: - f.x = l.x - if f.lx < l.columns.len+l.x-f.x: - f.lx = l.columns.len+l.x-f.x - else: - f.lines.add(Line()) - l = nil - trailingSpaces = 0 - if data[i] == '\r': - if i+1 < n and data[i+1] == '\n': - inc i - else: - lastReadIsCR = true - else: - if data[i] == ' ': - if l == nil: # trim leading spaces - inc leadingSpaces - else: - inc trailingSpaces - else: - if l == nil: - f.lines.add(Line()) - l = addr f.lines[^1] - l.x = leadingSpaces - leadingSpaces = 0 - if trailingSpaces > 0: - let oldL = l.columns.len - l.columns.setlen(oldL+trailingSpaces+1) - for j in oldL..<l.columns.len-1: - l.columns[j] = int(' ') - l.columns[^1] = int(data[i]) - trailingSpaces = 0 - else: - l.columns.add(int(data[i])) - inc i - return f - func Set*(f: var Field, x, y, v: int) = if v == int(' '): f.Blank(x, y) + return elif y >= f.y: if y < f.y+f.lines.len: # the line exists var l = addr f.lines[y-f.y] @@ -179,13 +105,19 @@ func Set*(f: var Field, x, y, v: int) = f.lx = f.lx + f.x - x f.x = x else: # append lines - 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 + if f.lines.len == 0: # is it the first line of the field + f.lines.setlen(1) f.x = x - if f.lx < x-f.x+1: - f.lx = x-f.x+1 + f.y = y + f.lx = 1 + else: + f.lines.setlen(y-f.y+1) + 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 + f.lines[y-f.y] = Line(x: x, columns: @[v]) else: # prepend lines var newlines = newSeq[Line](f.lines.len+f.y-y) newlines[0] = Line(x: x, columns: @[v]) @@ -199,6 +131,45 @@ func Set*(f: var Field, x, y, v: int) = if f.lx < x-f.x+1: f.lx = x-f.x+1 +proc Load*(filename: string): ref Field = + var file: File + if not open(file, filename): + return nil + defer: file.close() + var f: ref Field + new(f) + var lastReadIsCR = false + var x = 0 + var y = 0 + while true: + var data: array[4096, char] + let n = file.readChars(data) + if n <= 0: + break + var i = 0 + while i < n: + if lastReadIsCR: + lastReadIsCR = false + if data[i] == '\n': + inc i + continue + if data[i] == char(12): + discard + elif data[i] == '\r': + x = 0 + inc y + lastReadIsCR = true + elif data[i] == '\n': + x = 0 + inc y + #elif data[i] == ' ': + # inc x + else: + f[].Set(x, y, int(data[i])) + inc x + inc i + return f + func Step*(f: Field, v: tuple[x, y: int], d: tuple[x, y: int]): (int, int) = var x = v.x + d.x var y = v.y + d.y |