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Make SWITCH COSTUME and SWITCH BACKDROP compatible with 2.0

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jokebookservice1 2018-08-22 20:39:15 +03:00
parent c81f7ee9a6
commit 3ef61e2248
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2 changed files with 61 additions and 38 deletions
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97
src/blocks/scratch3_looks.js
View file

@ -344,65 +344,86 @@ class Scratch3LooksBlocks {
}
/**
* Utility function to set the costume or backdrop of a target.
* Utility function to set the costume of a target.
* Matches the behavior of Scratch 2.0 for different types of arguments.
* @param {!Target} target Target to set costume/backdrop to.
* @param {!Target} target Target to set costume to.
* @param {Any} requestedCostume Costume requested, e.g., 0, 'name', etc.
* @param {boolean=} optZeroIndex Set to zero-index the requestedCostume.
* @return {Array.<!Thread>} Any threads started by this switch.
*/
_setCostumeOrBackdrop (target,
requestedCostume, optZeroIndex) {
_setCostume (target, requestedCostume, optZeroIndex) {
if (typeof requestedCostume === 'number') {
target.setCostume(optZeroIndex ?
requestedCostume : requestedCostume - 1);
target.setCostume(optZeroIndex ? requestedCostume : requestedCostume - 1);
} else {
const costumeIndex = target.getCostumeIndexByName(requestedCostume);
if (costumeIndex > -1) {
const costumeIndex = target.getCostumeIndexByName(requestedCostume.toString());
if (costumeIndex !== -1) {
target.setCostume(costumeIndex);
} else if (requestedCostume === 'previous costume' ||
requestedCostume === 'previous backdrop') {
target.setCostume(target.currentCostume - 1);
} else if (requestedCostume === 'next costume' ||
requestedCostume === 'next backdrop') {
} else if (requestedCostume === 'next costume') {
target.setCostume(target.currentCostume + 1);
} else if (requestedCostume === 'random backdrop') {
const numCostumes = target.getCostumes().length;
if (numCostumes > 1) {
let selectedIndex = Math.floor(Math.random() * (numCostumes - 1));
if (selectedIndex === target.currentCostume) selectedIndex += 1;
target.setCostume(selectedIndex);
}
} else {
const forcedNumber = Number(requestedCostume);
if (!isNaN(forcedNumber)) {
target.setCostume(optZeroIndex ?
forcedNumber : forcedNumber - 1);
}
} else if (requestedCostume === 'previous costume') {
target.setCostume(target.currentCostume - 1);
} else if (!isNaN(requestedCostume) &&
(typeof requestedCostume !== 'string' || /\d/g.test(requestedCostume))) {
target.setCostume(optZeroIndex ? Number(requestedCostume) : Number(requestedCostume) - 1);
}
}
if (target === this.runtime.getTargetForStage()) {
// Target is the stage - start hats.
const newName = target.getCostumes()[target.currentCostume].name;
return this.runtime.startHats('event_whenbackdropswitchesto', {
BACKDROP: newName
});
}
// Per 2.0, 'switch costume' can't start threads even in the Stage.
return [];
}
/**
* Utility function to set the backdrop of a target.
* Matches the behavior of Scratch 2.0 for different types of arguments.
* @param {!Target} stage Target to set backdrop to.
* @param {Any} requestedBackdrop Backdrop requested, e.g., 0, 'name', etc.
* @param {boolean=} optZeroIndex Set to zero-index the requestedBackdrop.
* @return {Array.<!Thread>} Any threads started by this switch.
*/
_setBackdrop (stage, requestedBackdrop, optZeroIndex) {
if (typeof requestedBackdrop === 'number') {
stage.setCostume(optZeroIndex ? requestedBackdrop : requestedBackdrop - 1);
} else if (requestedBackdrop === 'next backdrop') {
stage.setCostume(stage.currentCostume + 1);
} else if (requestedBackdrop === 'previous backdrop') {
stage.setCostume(stage.currentCostume - 1);
} else {
const costumeIndex = stage.getCostumeIndexByName(requestedBackdrop.toString());
if (costumeIndex !== -1) {
stage.setCostume(costumeIndex);
} else if (requestedBackdrop === 'random backdrop') {
const numCostumes = stage.getCostumes().length;
if (numCostumes > 1) {
let selectedIndex = Math.floor(Math.random() * (numCostumes - 1));
if (selectedIndex === stage.currentCostume) selectedIndex += 1;
stage.setCostume(selectedIndex);
}
} else if (!isNaN(requestedBackdrop) &&
(typeof requestedBackdrop !== 'string' || /\d/g.test(requestedBackdrop))) {
stage.setCostume(optZeroIndex ? Number(requestedBackdrop) : Number(requestedBackdrop) - 1);
}
}
const newName = stage.getCostumes()[stage.currentCostume].name;
return this.runtime.startHats('event_whenbackdropswitchesto', {
BACKDROP: newName
});
}
switchCostume (args, util) {
this._setCostumeOrBackdrop(util.target, args.COSTUME);
this._setCostume(util.target, args.COSTUME);
}
nextCostume (args, util) {
this._setCostumeOrBackdrop(
this._setCostume(
util.target, util.target.currentCostume + 1, true
);
}
switchBackdrop (args) {
this._setCostumeOrBackdrop(this.runtime.getTargetForStage(), args.BACKDROP);
this._setBackdrop(this.runtime.getTargetForStage(), args.BACKDROP);
}
switchBackdropAndWait (args, util) {
@ -410,7 +431,7 @@ class Scratch3LooksBlocks {
if (!util.stackFrame.startedThreads) {
// No - switch the backdrop.
util.stackFrame.startedThreads = (
this._setCostumeOrBackdrop(
this._setBackdrop(
this.runtime.getTargetForStage(),
args.BACKDROP
)
@ -440,7 +461,7 @@ class Scratch3LooksBlocks {
nextBackdrop () {
const stage = this.runtime.getTargetForStage();
this._setCostumeOrBackdrop(
this._setBackdrop(
stage, stage.currentCostume + 1, true
);
}

2
src/sprites/rendered-target.js
View file

@ -463,6 +463,8 @@ class RenderedTarget extends Target {
setCostume (index) {
// Keep the costume index within possible values.
index = Math.round(index);
if ([Infinity, -Infinity, NaN].includes(index)) index = 0;
this.currentCostume = MathUtil.wrapClamp(
index, 0, this.sprite.costumes.length - 1
);