126 lines
3.6 KiB
Dart
126 lines
3.6 KiB
Dart
import 'dart:math' as math;
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import 'package:wolf_dart/classes/coordinate_2d.dart';
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import 'package:wolf_dart/features/entities/enemies/enemy.dart';
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import 'package:wolf_dart/features/entities/entity.dart';
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class Dog extends Enemy {
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static const double speed = 0.05; // Dogs are much faster than guards!
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bool _hasBittenThisCycle = false;
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Dog({
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required super.x,
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required super.y,
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required super.angle,
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required super.mapId,
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}) : super(
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spriteIndex: 99, // Dogs start at index 99 in VSWAP
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state: EntityState.idle,
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);
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static Dog? trySpawn(int objId, double x, double y, int difficultyLevel) {
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bool canSpawn = false;
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switch (difficultyLevel) {
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case 0:
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canSpawn = objId >= 116 && objId <= 119;
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break;
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case 1:
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canSpawn = objId >= 152 && objId <= 155;
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break;
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case 2:
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canSpawn = objId >= 188 && objId <= 191;
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break;
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case 3:
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canSpawn = objId >= 224 && objId <= 227;
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break;
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}
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if (canSpawn) {
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return Dog(
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x: x,
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y: y,
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angle: Enemy.getInitialAngle(objId),
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mapId: objId,
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);
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}
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return null;
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}
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@override
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void update({
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required int elapsedMs,
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required Coordinate2D playerPosition,
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required bool Function(int x, int y) isWalkable,
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required void Function(int damage) onDamagePlayer,
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}) {
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if (state == EntityState.idle) {
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if (hasLineOfSight(playerPosition, isWalkable)) {
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state = EntityState.patrolling;
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lastActionTime = elapsedMs;
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}
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}
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if (state == EntityState.idle ||
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state == EntityState.patrolling ||
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state == EntityState.shooting) {
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// "Shooting" here means biting
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double dx = playerPosition.x - x;
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double dy = playerPosition.y - y;
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double distance = math.sqrt(dx * dx + dy * dy);
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double angleToPlayer = math.atan2(dy, dx);
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if (state == EntityState.patrolling || state == EntityState.shooting) {
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angle = angleToPlayer;
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}
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double diff = angle - angleToPlayer;
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while (diff <= -math.pi) {
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diff += 2 * math.pi;
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}
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while (diff > math.pi) {
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diff -= 2 * math.pi;
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}
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int octant = ((diff + (math.pi / 8)) / (math.pi / 4)).floor() % 8;
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if (octant < 0) octant += 8;
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if (state == EntityState.idle) {
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spriteIndex = 99 + octant; // Base dog standing sprite
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} else if (state == EntityState.patrolling) {
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if (distance > 0.8) {
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double moveX = x + math.cos(angle) * speed;
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double moveY = y + math.sin(angle) * speed;
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if (isWalkable(moveX.toInt(), y.toInt())) x = moveX;
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if (isWalkable(x.toInt(), moveY.toInt())) y = moveY;
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}
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// Dogs only have 4 walking angles, alternating legs
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int walkFrame = (elapsedMs ~/ 100) % 4;
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spriteIndex = 107 + (walkFrame * 8) + octant;
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// Dog Bite Attack (Must be practically touching the player)
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if (distance < 1.0 && elapsedMs - lastActionTime > 1000) {
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state = EntityState.shooting;
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lastActionTime = elapsedMs;
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_hasBittenThisCycle = false;
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}
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} else if (state == EntityState.shooting) {
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int timeAttacking = elapsedMs - lastActionTime;
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if (timeAttacking < 200) {
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spriteIndex = 139; // Jumping/Biting frame
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if (!_hasBittenThisCycle) {
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onDamagePlayer(5); // Dogs do less damage than guards
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_hasBittenThisCycle = true;
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}
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} else {
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state = EntityState.patrolling;
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lastActionTime = elapsedMs;
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}
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}
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}
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}
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}
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