优化碰撞识别，加入暖场帧数

src/core/particleConfig.ts

@@ -125,6 +125,7 @@ export function defaultConfig(): EmitterConfig {
     gravityCurve: [{ x: 0, y: 1 }, { x: 1, y: 1 }],
     damping: 0,
     seed: 0,
+    warmupFrames: 0,
     colorStart: '#ffffff',
     colorEnd: '#ff4d4d',
     colorOverLife: false,
@@ -358,6 +359,7 @@ export function ensureEmitterConfig(config: EmitterConfig): EmitterConfig {
   if (config.streamBehavior !== 'normal' && config.streamBehavior !== 'loop') config.streamBehavior = 'normal'
   if (needsLoopDurationMigration || !Number.isFinite(config.loopDurationFrames)) config.loopDurationFrames = Math.ceil(Math.max(1 / 30, Number(config.duration) || 1) * 30)
   config.loopDurationFrames = Math.min(1800, Math.max(1, Math.ceil(config.loopDurationFrames)))
+  config.warmupFrames = Math.max(0, Math.floor(Number(config.warmupFrames) || 0))
   if (typeof config.generateLoopStartAnimation !== 'boolean') config.generateLoopStartAnimation = false
   if (typeof config.generateLoopEndAnimation !== 'boolean') config.generateLoopEndAnimation = false
   if (typeof config.loopStartUseCustomDuration !== 'boolean') config.loopStartUseCustomDuration = false