How do I get some parameters of instance through JS.

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  • And how do I get the parameters of a instance's effect.

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  • Some example code, set globalThis.globalRuntime = runtime in startup scripts.

    Also see: construct.net/en/make-games/manuals/addon-sdk/runtime-reference/object-classes/worldinfo 

    var topLtX = localVars.topLtX
var topLtY = localVars.topLtY
var topRtX = localVars.topRtX
var topRtY = localVars.topRtY
var botLtX = localVars.botLtX
var botLtY = localVars.botLtY
var botRtX = localVars.botRtX
var botRtY = localVars.botRtY
var effectIndex = localVars.effectIndex
// Get instance details
var inst = globalThis.globalRuntime.GetInstanceByUID(localVars.uid)
var wi = inst.GetWorldInfo()
// Find bounding box
var minX = Math.min(topLtX, topRtX, botLtX, botRtX)
var minY = Math.min(topLtY, topRtY, botLtY, botRtY)
var maxX = Math.max(topLtX, topRtX, botLtX, botRtX)
var maxY = Math.max(topLtY, topRtY, botLtY, botRtY)
// Calc bonding box
var width = maxX - minX
var height = maxY - minY
// Set bounding box
wi.SetX(minX)
wi.SetY(minY)
wi.SetWidth(width)
wi.SetHeight(height)
wi.SetBboxChanged()
// Calc normalized relative range (0-1) for texture X,Y coords from pixel locations
topLtX = (topLtX-minX)/width
topLtY = (topLtY-minY)/height
topRtX = (topRtX-minX)/width
topRtY = (topRtY-minY)/height
botLtX = (botLtX-minX)/width
botLtY = (botLtY-minY)/height
botRtX = (botRtX-minX)/width
botRtY = (botRtY-minY)/height

// Set effect parameters (takes 5%+ CPU @ 2000 objects)
/*
inst._sdkInst.CallAction(C3.Plugins.Sprite.Acts.SetEffectParam, effectName,0,topLtX)
inst._sdkInst.CallAction(C3.Plugins.Sprite.Acts.SetEffectParam, effectName,1,topLtY)
inst._sdkInst.CallAction(C3.Plugins.Sprite.Acts.SetEffectParam, effectName,2,topRtX)
inst._sdkInst.CallAction(C3.Plugins.Sprite.Acts.SetEffectParam, effectName,3,topRtY)
inst._sdkInst.CallAction(C3.Plugins.Sprite.Acts.SetEffectParam, effectName,4,botLtX)
inst._sdkInst.CallAction(C3.Plugins.Sprite.Acts.SetEffectParam, effectName,5,botLtY)
inst._sdkInst.CallAction(C3.Plugins.Sprite.Acts.SetEffectParam, effectName,6,botRtX)
inst._sdkInst.CallAction(C3.Plugins.Sprite.Acts.SetEffectParam, effectName,7,botRtY
*/

// (take 1%+ CPU @ 2000 objects to find index by effectName), instead pass in effectIndex to function
// var effectIndex = inst.GetObjectClass().GetEffectList().GetEffectTypeByName(effectName).GetIndex()

// Set effect parameters by ref (faster than CallAction)
var effectParam = wi.GetInstanceEffectList().GetEffectParametersForIndex(effectIndex)
effectParam[0]= topLtX
effectParam[1]= topLtY
effectParam[2]= topRtX
effectParam[3]= topRtY
effectParam[4]= botLtX
effectParam[5]= botLtY
effectParam[6]= botRtX
effectParam[7]= botRtY
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