39 lines
1.3 KiB
Nim
39 lines
1.3 KiB
Nim
## Standalone radar lock module for Robocode Tank Royale (1v1).
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## No bot-specific imports — takes plain floats, returns radarTurnRate.
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##
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## Tank Royale radar uses standard math convention: 0° = east, CCW positive.
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## Angles are in degrees.
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import std/math
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const
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MaxRadarTurn* = 45.0
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DefaultOvershootDeg* = 5.0
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var overShootDeg* = DefaultOvershootDeg
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proc init*() =
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## Reset module to defaults.
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## In your bot's constructor set:
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## adjustRadarForBodyTurn = true
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## adjustRadarForGunTurn = true
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overShootDeg = DefaultOvershootDeg
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proc normalizeRelative(angle: float64): float64 {.inline.} =
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result = angle mod 360.0
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if result >= 180.0: result -= 360.0
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elif result < -180.0: result += 360.0
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proc doRadar*(currentRadarHeading, enemyBearing: float64): float64 =
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## Returns radarTurnRate (degrees/tick, positive = clockwise).
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##
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## currentRadarHeading: current radar direction in degrees (0=east, CCW+).
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## enemyBearing: absolute bearing to enemy in same coordinate system.
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##
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## Handles angle wrapping, clamps to [-45, +45], adds overshoot sweep.
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var turn = normalizeRelative(enemyBearing - currentRadarHeading)
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# Add overshoot in the same direction as the turn to maintain lock
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if turn < 0.0: turn -= overShootDeg
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else: turn += overShootDeg
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result = turn.clamp(-MaxRadarTurn, MaxRadarTurn)
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