1
// 环函数实现
2
public static void spawnCircle(ServerLevel level, double x, double y, double z, float radius, ParticleOptions particle, int density)
3
{
4
    for (int i = 0; i < density; i++) {
5
        double angle = i * Math.PI * 2.0 / density;
6
        double px = x + Math.cos(angle) * radius;
7
        double pz = z + Math.sin(angle) * radius;
8
        level.sendParticles(particle, px, y, pz, 1, 0, 0, 0, 0);
9
    }
10
}
11

12
// 钢铁函数模块
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public static void spawnFilledCircle(ServerLevel level, double x, double y, double z, float radius, ParticleOptions particle, float particleSpacing)
14
{
15
    float step = 0.5f; // 每层环间隔 0.5 格
16
    for (float r = step; r <= radius; r += step) {
17
        // 周长 / 间距 = 这一环需要多少粒子
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        int count = Math.max(8, (int) (2.0 * Math.PI * r / particleSpacing));
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        spawnCircle(level, x, y, z, r, particle, count);
20
    }
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}
22

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// ===== 语义别名 =====
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// 钢铁提示范围 同时 自定义粒子效果
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public static void steelAreaWarning(ServerLevel level, Entity entity, float radius)
26
{
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    var dust = new DustParticleOptions(new Vector3f(1.0f, 0.5f, 0.0f), 2.0f);
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    spawnFilledCircleAtEntity(level, entity, radius, dust, 0.5f);
29
}
30

31
public static void steelAreaCheck(ServerLevel level, Entity entity, float radius) {
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    var dust = new DustParticleOptions(new Vector3f(1.0f, 0.0f, 0.0f), 2.0f);
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    spawnFilledCircleAtEntity(level, entity, radius, dust, 0.5f);
34
}

1
public static void register(CommandDispatcher<CommandSourceStack> dispatcher)
2
{
3
    dispatcher.register(Commands.literal("springtsuki")
4
            .then(Commands.literal("lib")
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                // 钢铁测试
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                .then(Commands.literal("warning_steel")
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                        .then(Commands.argument("radius", FloatArgumentType.floatArg(1f, 20f))
8
                                .executes(ctx -> {
9
                                    var player = ctx.getSource().getPlayerOrException();
10
                                    var radius = FloatArgumentType.getFloat(ctx, "radius");
11
                                    var dust = new DustParticleOptions(new Vector3f(1.0f, 0.5f, 0.0f), 1.5f);
12
                                    EffectLib.steelAreaWarning(player.serverLevel(), player, radius);
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                                    player.sendSystemMessage(Component.literal("§a✓ 钢铁半径=" + radius));
14
                                    return 1;
15
                                })))
16

17
                .then(Commands.literal("check_steel")
18
                        .then(Commands.argument("radius", FloatArgumentType.floatArg(1f, 20f))
19
                                .executes(ctx -> {
20
                                    var player = ctx.getSource().getPlayerOrException();
21
                                    var radius = FloatArgumentType.getFloat(ctx, "radius");
22
                                    var dust = new DustParticleOptions(new Vector3f(1.0f, 0.5f, 0.0f), 1.5f);
23
                                    EffectLib.steelAreaCheck(player.serverLevel(), player, radius);
24
                                    player.sendSystemMessage(Component.literal("§a✓ 钢铁半径=" + radius));
25
                                    return 1;
26
                                })))
27
}