8bitworkshop/gen/chunk-JM5NHRL4.js.map

{
  "version": 3,
  "sources": ["../src/common/recorder.ts"],
  "sourcesContent": ["\nimport { Platform, EmuState, EmuControlsState, EmuRecorder } from \"./baseplatform\";\nimport { getNoiseSeed, setNoiseSeed } from \"./emu\";\n\n// RECORDER\n\ntype FrameRec = {controls:EmuControlsState, seed:number};\n\nexport class StateRecorderImpl implements EmuRecorder {\n  \n    checkpointInterval : number = 10;\n    callbackStateChanged : () => void;\n    callbackNewCheckpoint : (state:EmuState) => void;\n    maxCheckpoints : number = 300;\n    \n    platform : Platform;\n    checkpoints : EmuState[];\n    framerecs : FrameRec[];\n    frameCount : number;\n    lastSeekFrame : number;\n    lastSeekStep : number;\n    lastStepCount : number;\n    \n    constructor(platform : Platform) {\n        this.reset();\n        this.platform = platform;\n    }\n\n    reset() {\n        this.checkpoints = [];\n        this.framerecs = [];\n        this.frameCount = 0;\n        this.lastSeekFrame = 0;\n        this.lastSeekStep = 0;\n        this.lastStepCount = 0;\n        if (this.callbackStateChanged) this.callbackStateChanged();\n    }\n\n    frameRequested() : boolean {\n        var controls = {\n          controls:this.platform.saveControlsState(),\n          seed:getNoiseSeed()\n        };\n        var requested = false;\n        // are we replaying? then we don't need to save a frame, just replace controls\n        if (this.lastSeekFrame < this.frameCount) {\n            this.loadControls(this.lastSeekFrame);\n        } else {\n            // record the control state, if available\n            if (this.platform.saveControlsState) {\n                this.framerecs.push(controls);\n            }\n            // time to save next frame?\n            requested = (this.frameCount++ % this.checkpointInterval) == 0;\n        }\n        this.lastSeekFrame++;\n        this.lastSeekStep = 0;\n        if (this.callbackStateChanged) this.callbackStateChanged();\n        return requested;\n    }\n    \n    numFrames() : number {\n        return this.frameCount;\n    }\n    \n    currentFrame() : number {\n        return this.lastSeekFrame;\n    }\n\n    currentStep() : number {\n      return this.lastSeekStep;\n  }\n\n    recordFrame(state : EmuState) {\n        this.checkpoints.push(state);\n        if (this.callbackNewCheckpoint) this.callbackNewCheckpoint(state);\n        // checkpoints full?\n        if (this.checkpoints.length > this.maxCheckpoints) {\n            this.checkpoints.shift(); // remove 1st checkpoint\n            this.framerecs = this.framerecs.slice(this.checkpointInterval);\n            this.lastSeekFrame -= this.checkpointInterval;\n            this.frameCount -= this.checkpointInterval;\n            if (this.callbackStateChanged) this.callbackStateChanged();\n        }\n    }\n\n    getStateAtOrBefore(frame : number) : {frame : number, state : EmuState} {\n        // initial frame?\n        if (frame <= 0 && this.checkpoints.length > 0)\n          return {frame:0, state:this.checkpoints[0]};\n\n        var bufidx = Math.floor(frame / this.checkpointInterval);\n        var foundidx = bufidx < this.checkpoints.length ? bufidx : this.checkpoints.length-1;\n        var foundframe = foundidx * this.checkpointInterval;\n        return {frame:foundframe, state:this.checkpoints[foundidx]};\n    }\n\n    loadFrame(seekframe : number, seekstep? : number) : number {\n        seekframe |= 0;\n        seekstep |= 0;\n        if (seekframe == this.lastSeekFrame && seekstep == this.lastSeekStep) {\n            return seekframe; // already set to this frame\n        }\n        // TODO: what if < 1?\n        let {frame,state} = this.getStateAtOrBefore(seekframe-1);\n        if (state) {\n            var numSteps = 0;\n            this.platform.pause();\n            this.platform.loadState(state);\n            // seek to frame index\n            while (frame < seekframe) {\n                if (frame < this.framerecs.length) {\n                    this.loadControls(frame);\n                }\n                frame++;\n                numSteps = this.platform.advance(frame < seekframe); // TODO: infinite l
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