SirStone
a4e830531b
Round N+1's fresh bot thread realloc'd module-level strings/seqs (SVG buffer, intent stdout/stderr, team messages) left behind by dead round N's thread — same rawDealloc SIGSEGV class as the event queue, seen at graphics.nim:274 (drawText->prepareAdd, core 2490478 @ 03:13:40, battle round 257). - graphics.nim: gSvgBuffer -> array[16384, char] + gSvgLen, appendSvg - bot.nim: intent stdout/stderr -> static char arrays; team messages -> array[16, TeamMessage] + len; buildIntentJson/printToStdOut/Err/ broadcastTeamMessage bounded appends - botThreadEntry: reset graphics+intent buffers on the owning thread Also fixes stale mapActions call sites in tests/ (missing enemyX/enemyY).
109 lines
4.2 KiB
Nim
109 lines
4.2 KiB
Nim
## SVG debug graphics API for Robocode Tank Royale Nim bot API.
|
|
## Module-level procs write SVG into a buffer that is flushed into
|
|
## BotIntent.debugGraphics each tick and cleared afterward.
|
|
|
|
import std/strformat
|
|
import ./color
|
|
|
|
# ---------------------------------------------------------------------------
|
|
# Module-level state (single bot per process)
|
|
# ---------------------------------------------------------------------------
|
|
|
|
# ponytail: static char array + length instead of a heap string. A fresh bot
|
|
# thread runs each round; a module-level string grown by thread N and cleared
|
|
# ("") by thread N+1 free/reallocs a dead thread's allocator block ->
|
|
# rawDealloc SIGSEGV (same crash class as the event queue seq; gdb-confirmed
|
|
# in drawText mid-campaign). Static storage: no heap block crosses threads.
|
|
const SVG_BUFFER_CAP = 16384
|
|
|
|
var gSvgLen: int
|
|
var gSvgBuffer: array[SVG_BUFFER_CAP, char]
|
|
var gStrokeColor: Color = WHITE
|
|
var gFillColor: Color = WHITE
|
|
var gStrokeWidth: float = 1.0
|
|
var gFontFamily: string = "Arial" # never rebound at runtime (setFont unused)
|
|
var gFontSize: float = 12.0
|
|
|
|
proc appendSvg(s: string) =
|
|
## Append an SVG fragment, dropping anything past the static cap.
|
|
let room = SVG_BUFFER_CAP - gSvgLen
|
|
if room > 0:
|
|
let n = min(room, s.len)
|
|
for i in 0 ..< n: gSvgBuffer[gSvgLen + i] = s[i]
|
|
inc gSvgLen, n
|
|
|
|
# ---------------------------------------------------------------------------
|
|
# Internal helpers
|
|
# ---------------------------------------------------------------------------
|
|
|
|
proc svgAttrs(): string =
|
|
## Current stroke/fill/width as SVG attribute string.
|
|
&"stroke=\"{gStrokeColor.toHex}\" fill=\"{gFillColor.toHex}\" stroke-width=\"{gStrokeWidth}\""
|
|
|
|
proc svgOutput*(): string =
|
|
## Returns the SVG fragment for this tick, or "" if nothing was drawn.
|
|
if gSvgLen == 0: return ""
|
|
"<g>" & $gSvgBuffer[0 ..< gSvgLen] & "</g>"
|
|
|
|
proc clearGraphics*() =
|
|
## Reset buffer and all style globals to defaults. Called after each tick.
|
|
gSvgLen = 0
|
|
gStrokeColor = WHITE
|
|
gFillColor = WHITE
|
|
gStrokeWidth = 1.0
|
|
gFontFamily = "Arial"
|
|
gFontSize = 12.0
|
|
|
|
# ---------------------------------------------------------------------------
|
|
# State setters
|
|
# ---------------------------------------------------------------------------
|
|
|
|
proc setStrokeColor*(c: Color) = gStrokeColor = c
|
|
proc setFillColor*(c: Color) = gFillColor = c
|
|
proc setStrokeWidth*(w: float) = gStrokeWidth = w
|
|
proc setFont*(family: string; size: float) =
|
|
gFontFamily = family
|
|
gFontSize = size
|
|
|
|
# ---------------------------------------------------------------------------
|
|
# Draw procs — append raw SVG elements
|
|
# ---------------------------------------------------------------------------
|
|
|
|
proc drawLine*(x1, y1, x2, y2: float) =
|
|
appendSvg(&"<line x1=\"{x1}\" y1=\"{y1}\" x2=\"{x2}\" y2=\"{y2}\" {svgAttrs()}/>")
|
|
|
|
proc drawRectangle*(x, y, w, h: float) =
|
|
let attrs = &"stroke=\"{gStrokeColor.toHex}\" fill=\"none\" stroke-width=\"{gStrokeWidth}\""
|
|
appendSvg(&"<rect x=\"{x}\" y=\"{y}\" width=\"{w}\" height=\"{h}\" {attrs}/>")
|
|
|
|
proc fillRectangle*(x, y, w, h: float) =
|
|
let attrs = &"stroke=\"none\" fill=\"{gFillColor.toHex}\""
|
|
appendSvg(&"<rect x=\"{x}\" y=\"{y}\" width=\"{w}\" height=\"{h}\" {attrs}/>")
|
|
|
|
proc drawCircle*(x, y, r: float) =
|
|
let attrs = &"stroke=\"{gStrokeColor.toHex}\" fill=\"none\" stroke-width=\"{gStrokeWidth}\""
|
|
appendSvg(&"<circle cx=\"{x}\" cy=\"{y}\" r=\"{r}\" {attrs}/>")
|
|
|
|
proc fillCircle*(x, y, r: float) =
|
|
let attrs = &"stroke=\"none\" fill=\"{gFillColor.toHex}\""
|
|
appendSvg(&"<circle cx=\"{x}\" cy=\"{y}\" r=\"{r}\" {attrs}/>")
|
|
|
|
proc drawText*(text: string; x, y: float) =
|
|
appendSvg(&"<text x=\"{x}\" y=\"{y}\" font-family=\"{gFontFamily}\" font-size=\"{gFontSize}\">{text}</text>")
|
|
|
|
proc drawPolygon*(points: seq[(float, float)]) =
|
|
var pts = ""
|
|
for (px, py) in points:
|
|
if pts.len > 0: pts.add ' '
|
|
pts.add &"{px},{py}"
|
|
let attrs = &"stroke=\"{gStrokeColor.toHex}\" fill=\"none\" stroke-width=\"{gStrokeWidth}\""
|
|
appendSvg(&"<polygon points=\"{pts}\" {attrs}/>")
|
|
|
|
proc fillPolygon*(points: seq[(float, float)]) =
|
|
var pts = ""
|
|
for (px, py) in points:
|
|
if pts.len > 0: pts.add ' '
|
|
pts.add &"{px},{py}"
|
|
let attrs = &"stroke=\"none\" fill=\"{gFillColor.toHex}\""
|
|
appendSvg(&"<polygon points=\"{pts}\" {attrs}/>")
|