feat(skill): add movement acceleration support for skills

1. 新增SMoveComp的isAccelerate字段控制加速逻辑
2. 添加技能配置is_accel字段启用加速效果
3. 实现二次方缓入加速曲线，兼顾起步速度与最终加速度
4. 为6001号技能默认开启加速效果并调整其移动类型为直线运动

assets/script/game/common/config/SkillSet.ts

@@ -155,6 +155,7 @@ export interface SkillConfig {
     bck?: number,              // 额外击退概率
     buff_type?: Attrs,         // Buff 类型 (单一职责)
     call_hero?: number,            // 召唤技能召唤英雄id(可选)
+    is_accel?: boolean,            // 是否逐渐加速飞行
     info: string,              // 技能描述
 }
 
@@ -170,6 +171,7 @@ export interface SkillOverrides {
     bck?: number;
     buff_type?: Attrs;
     call_hero?: number;
+    is_accel?: boolean;
 }
 
 /**
@@ -209,18 +211,18 @@ export const SkillSet: Record<number, SkillConfig> = {
     **/
     6001: {
         uuid: 6001, name: "火球", sp_name: "atk_1", icon: "Stat_Attack_01", TGroup: TGroup.Enemy, readyAnm: "", endAnm: "", act: "atk",
-        DTType: DTType.single, ap: 100, hit_count: 1, hitcd: 0.2, speed: 720, with: 0, ready: 0.2, EAnm: 0, DAnm: "", IType: IType.Melee,
+        DTType: DTType.single, ap: 100, hit_count: 1, hitcd: 0.2, speed: 720, with: 0, ready: 0.2, EAnm: 0, DAnm: "", IType: IType.Melee,is_accel:true,
-        RType: RType.bezier, EType: EType.collision, info: "造成攻击力100%的伤害",
+        RType: RType.linear, EType: EType.collision, info: "造成攻击力100%的伤害",
     },
     6002: {
         uuid: 6002, name: "紫烟", sp_name: "atk_2", icon: "Stat_Attack_01", TGroup: TGroup.Enemy, readyAnm: "", endAnm: "", act: "atk",
         DTType: DTType.single, ap: 100, hit_count: 1, hitcd: 0.3, speed: 720, with: 90, ready: 0.2, EAnm: 0, DAnm: "", IType: IType.remote,
-        RType: RType.bezier, EType: EType.collision, info: "近战普通攻击技能",
+        RType: RType.linear, EType: EType.collision, info: "近战普通攻击技能",
     },
     6003: {
         uuid: 6003, name: "白球", sp_name: "atk_3", icon: "Stat_Attack_01", TGroup: TGroup.Enemy, readyAnm: "", endAnm: "", act: "atk",
         DTType: DTType.single, ap: 100, hit_count: 1, hitcd: 0.3, speed: 720, with: 90, ready: 0.2, EAnm: 0, DAnm: "", IType: IType.remote,
-        RType: RType.bezier, EType: EType.collision, info: "一定几率暴击",
+        RType: RType.linear, EType: EType.collision, info: "一定几率暴击",
     },
 
     6008: {

assets/script/game/skill/SMoveComp.ts

@@ -69,6 +69,9 @@ export class SMoveDataComp extends ecs.Comp {
     bezierMidHeight: number = 200;
     bezierArc: number = 1;
     
+    /** 是否逐渐加速 (ease-in) */
+    isAccelerate: boolean = false;
+    
     /** 是否自动销毁（到达目标后） */
     autoDestroy: boolean = true;
     
@@ -80,6 +83,7 @@ export class SMoveDataComp extends ecs.Comp {
         this.bezierStartHeight = 30;
         this.bezierMidHeight = 200;
         this.bezierArc = 1;
+        this.isAccelerate = false;
         this.speed = 500;
         this.progress = 0;
         this.scale = 1;
@@ -181,14 +185,20 @@ export class SMoveDataComp extends ecs.Comp {
      * 根据移动类型计算当前位置
      */
     private calculateCurrentPosition() {
+        // 如果开启了逐渐加速，混合线性与二次方曲线 (如 0.7 * t^2 + 0.3 * t)
+        // 这样起步拥有 30% 的基础速度，不会显得完全静止，随后逐渐加速
+        const t = this.isAccelerate ? 
+            (this.progress * this.progress * 0.7 + this.progress * 0.3) : 
+            this.progress;
+
         switch (this.runType) {
             case RType.linear:
                 // 直线运动
-                Vec3.lerp(this.currentPos, this.startPos, this.targetPos, this.progress);
+                Vec3.lerp(this.currentPos, this.startPos, this.targetPos, t);
                 break;
                 
             case RType.bezier:
-                this.calculateBezierPosition(this.progress);
+                this.calculateBezierPosition(t);
                 break;
                 
             case RType.fixed:
@@ -198,7 +208,7 @@ export class SMoveDataComp extends ecs.Comp {
                 break;
                 
             default:
-                Vec3.lerp(this.currentPos, this.startPos, this.targetPos, this.progress);
+                Vec3.lerp(this.currentPos, this.startPos, this.targetPos, t);
                 break;
         }
     }

assets/script/game/skill/SMoveSystem.ts

@@ -40,10 +40,13 @@ export class SMoveSystem extends ecs.ComblockSystem implements ecs.ISystemUpdate
             return;
         }
         
-        // 根据配置设置移动速度
+        // 根据配置设置移动速度与加速度
         if (skillConfig.speed > 0) {
             moveComp.speed = skillConfig.speed;
         }
+        if (skillConfig.is_accel) {
+            moveComp.isAccelerate = true;
+        }
         
         // 根据runType设置初始位置
         this.initializePosition(moveComp, skillView);
@@ -190,10 +193,12 @@ export class SMoveSystem extends ecs.ComblockSystem implements ecs.ISystemUpdate
         if (moveComp.progress < 1) {
             // 计算下一帧的位置来确定方向
             const nextProgress = Math.min(moveComp.progress + 0.01, 1);
+            const t = moveComp.isAccelerate ? 
+                (nextProgress * nextProgress * 0.7 + nextProgress * 0.3) : 
+                nextProgress;
             const nextPos = v3(0, 0, 0);
             
             // 计算下一个位置
-            const t = nextProgress;
             const oneMinusT = 1 - t;
             const oneMinusTSquared = oneMinusT * oneMinusT;
             const tSquared = t * t;
@@ -245,6 +250,7 @@ export class SMoveHelper {
         if (skillConfig) {
             moveComp.runType = skillConfig.RType || RType.linear;
             moveComp.speed = skillConfig.speed || 500;
+            if (skillConfig.is_accel) moveComp.isAccelerate = true;
         }
     }