Add realistic tackle mechanics with approach angle and velocity modifiers
- Calculate approach angle between tackler velocity and target direction - Apply angle-based modifiers: head-on (100%) > side (70%) > behind (40%) > opposite (20%) - Calculate closing speed from relative velocity differential - Apply velocity modifiers: weak <1 m/s (0.3x), solid >3 m/s (1.5x) - Combine modifiers: finalSuccess = base × angleModifier × velocityModifier - Enhanced debug logging shows all components of tackle calculation - Head-on charges now much less effective (~15-30% vs previous ~50%) - Rewards proper positioning, blindside hits, and high closing speeds 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
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Pierre Wessman
parent
3a48483973
commit
1d257a5757
@ -56,7 +56,7 @@ export const CENTER_DOT_RADIUS = 5; // pixels
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// AI/Behavior constants
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export const SHOOTING_RANGE = 10; // meters - max distance to attempt shot
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export const SHOOTING_ANGLE_THRESHOLD = Math.PI / 4; // radians (45 degrees)
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export const SHOOTING_ANGLE_THRESHOLD = Math.PI / 3; // radians (60 degrees)
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export const GOALIE_RANGE = 3; // meters - how far goalie moves from center
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// Collision avoidance constants
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@ -69,3 +69,19 @@ export const TACKLE_PUCK_LOOSE_CHANCE = 0.6; // Chance puck becomes loose
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export const TACKLE_COOLDOWN = 1000; // ms - time between tackles for same player
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export const TACKLE_FALL_DURATION = 500; // ms - time player stays down after being tackled
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export const TACKLE_MIN_SPEED = 2; // m/s - minimum speed required to execute tackle
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// Tackle angle modifiers (based on approach angle)
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export const TACKLE_ANGLE_HEAD_ON_THRESHOLD = Math.PI / 4; // 45° - best check angle
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export const TACKLE_ANGLE_SIDE_THRESHOLD = Math.PI / 2; // 90° - glancing blow
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export const TACKLE_ANGLE_BEHIND_THRESHOLD = (3 * Math.PI) / 4; // 135° - awkward angle
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export const TACKLE_ANGLE_HEAD_ON_MODIFIER = 1.0; // 100% effectiveness
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export const TACKLE_ANGLE_SIDE_MODIFIER = 0.7; // 70% effectiveness
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export const TACKLE_ANGLE_BEHIND_MODIFIER = 0.4; // 40% effectiveness
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export const TACKLE_ANGLE_OPPOSITE_MODIFIER = 0.2; // 20% effectiveness
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// Tackle velocity differential modifiers
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export const TACKLE_CLOSING_SPEED_WEAK = 1; // m/s - very weak check
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export const TACKLE_CLOSING_SPEED_SOLID = 3; // m/s - solid check
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export const TACKLE_VELOCITY_MODIFIER_MIN = 0.3; // Minimum modifier for very low closing speed
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export const TACKLE_VELOCITY_MODIFIER_MAX = 1.5; // Maximum modifier for high closing speed
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@ -18,7 +18,18 @@ import {
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SHOT_SPEED,
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TACKLE_SUCCESS_MODIFIER,
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TACKLE_PUCK_LOOSE_CHANCE,
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TACKLE_MIN_SPEED
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TACKLE_MIN_SPEED,
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TACKLE_ANGLE_HEAD_ON_THRESHOLD,
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TACKLE_ANGLE_SIDE_THRESHOLD,
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TACKLE_ANGLE_BEHIND_THRESHOLD,
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TACKLE_ANGLE_HEAD_ON_MODIFIER,
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TACKLE_ANGLE_SIDE_MODIFIER,
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TACKLE_ANGLE_BEHIND_MODIFIER,
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TACKLE_ANGLE_OPPOSITE_MODIFIER,
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TACKLE_CLOSING_SPEED_WEAK,
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TACKLE_CLOSING_SPEED_SOLID,
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TACKLE_VELOCITY_MODIFIER_MIN,
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TACKLE_VELOCITY_MODIFIER_MAX
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} from '../config/constants';
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import { Goal } from './Goal';
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import { Puck } from '../entities/Puck';
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@ -326,16 +337,85 @@ export class GameScene extends Phaser.Scene {
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return; // Tackle cannot occur
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}
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// Calculate tackle success based on tackling vs balance
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// Formula: (tackling / (tackling + balance)) * modifier
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// 1. Calculate approach angle modifier
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// Get velocity vectors (using physics body velocity)
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const tacklerVelX = tackler.body.velocity.x / SCALE; // Convert to m/s
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const tacklerVelY = tackler.body.velocity.y / SCALE;
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const tackledVelX = tackled.body.velocity.x / SCALE;
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const tackledVelY = tackled.body.velocity.y / SCALE;
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// Calculate angle of attack: angle between tackler's velocity and direction to tackled player
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const dx = tackled.gameX - tackler.gameX;
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const dy = tackled.gameY - tackler.gameY;
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const angleToTarget = Math.atan2(dy, dx);
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const tacklerVelocityAngle = Math.atan2(tacklerVelY, tacklerVelX);
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// Angle difference (how aligned is tackler's movement with target direction)
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let approachAngle = Math.abs(angleToTarget - tacklerVelocityAngle);
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// Normalize to 0-PI range
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if (approachAngle > Math.PI) approachAngle = 2 * Math.PI - approachAngle;
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// Determine angle modifier based on approach angle
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let angleModifier: number;
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if (approachAngle <= TACKLE_ANGLE_HEAD_ON_THRESHOLD) {
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angleModifier = TACKLE_ANGLE_HEAD_ON_MODIFIER; // Head-on
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} else if (approachAngle <= TACKLE_ANGLE_SIDE_THRESHOLD) {
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angleModifier = TACKLE_ANGLE_SIDE_MODIFIER; // Side angle
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} else if (approachAngle <= TACKLE_ANGLE_BEHIND_THRESHOLD) {
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angleModifier = TACKLE_ANGLE_BEHIND_MODIFIER; // From behind
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} else {
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angleModifier = TACKLE_ANGLE_OPPOSITE_MODIFIER; // Opposite direction
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}
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// 2. Calculate relative velocity differential (closing speed)
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// Project velocities onto the line connecting the players
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const distSq = dx * dx + dy * dy;
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const dist = Math.sqrt(distSq);
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if (dist < 0.01) {
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// Players are on top of each other, skip velocity calculation
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return;
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}
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const dirX = dx / dist; // Unit vector toward tackled player
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const dirY = dy / dist;
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// Closing velocity = tackler's velocity toward target - tackled's velocity toward tackler
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const tacklerClosingVel = tacklerVelX * dirX + tacklerVelY * dirY;
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const tackledClosingVel = -(tackledVelX * dirX + tackledVelY * dirY); // Negative because measuring toward tackler
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const closingSpeed = tacklerClosingVel + tackledClosingVel;
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// Calculate velocity modifier based on closing speed
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// Map closing speed to modifier range
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let velocityModifier: number;
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if (closingSpeed <= TACKLE_CLOSING_SPEED_WEAK) {
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velocityModifier = TACKLE_VELOCITY_MODIFIER_MIN;
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} else if (closingSpeed >= TACKLE_CLOSING_SPEED_SOLID) {
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velocityModifier = TACKLE_VELOCITY_MODIFIER_MAX;
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} else {
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// Linear interpolation between weak and solid
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const ratio = (closingSpeed - TACKLE_CLOSING_SPEED_WEAK) /
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(TACKLE_CLOSING_SPEED_SOLID - TACKLE_CLOSING_SPEED_WEAK);
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velocityModifier = TACKLE_VELOCITY_MODIFIER_MIN +
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ratio * (TACKLE_VELOCITY_MODIFIER_MAX - TACKLE_VELOCITY_MODIFIER_MIN);
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}
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// 3. Calculate base tackle success based on tackling vs balance
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const tacklerSkill = tackler.attributes.tackling;
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const tackledBalance = tackled.attributes.balance;
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const successChance = (tacklerSkill / (tacklerSkill + tackledBalance)) * TACKLE_SUCCESS_MODIFIER;
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const success = Math.random() < successChance;
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const baseSuccess = (tacklerSkill / (tacklerSkill + tackledBalance)) * TACKLE_SUCCESS_MODIFIER;
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// 4. Apply all modifiers
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const finalSuccessChance = baseSuccess * angleModifier * velocityModifier;
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const success = Math.random() < finalSuccessChance;
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console.log(
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`[Tackle] ${tackler.id} (tackling: ${tacklerSkill}, speed: ${tacklerSpeed.toFixed(1)} m/s) tackles ${tackled.id} (balance: ${tackledBalance}) - ${success ? 'SUCCESS' : 'FAILED'} (${(successChance * 100).toFixed(1)}%)`
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`[Tackle] ${tackler.id} → ${tackled.id} | ` +
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`Base: ${(baseSuccess * 100).toFixed(1)}% | ` +
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`Angle: ${(approachAngle * 180 / Math.PI).toFixed(0)}° (×${angleModifier.toFixed(2)}) | ` +
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`Closing: ${closingSpeed.toFixed(1)} m/s (×${velocityModifier.toFixed(2)}) | ` +
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`Final: ${(finalSuccessChance * 100).toFixed(1)}% → ${success ? 'SUCCESS' : 'FAILED'}`
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);
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// Mark tackle performed (cooldown starts)
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