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Merge pull request #1 from Squarific/patch-3
Patch 3
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,142 @@ | ||
| SQUARIFIC = {framework: {}}; | ||
| SQUARIFIC.framework.TouchControl = function (elem, settings) { | ||
| /* Settings: | ||
| { | ||
| clickStyle: cssStyleDeclaration, //Style during the touching of the joystick | ||
| pretendArrowKeys: boolean, //Should it simulate keypresses of the arrows | ||
| } | ||
| */ | ||
| "use strict"; | ||
| var callbackList = [], | ||
| self = this, | ||
| originalStyle = elem.style, | ||
| originalX = 0, | ||
| originalY = 0, | ||
| fakeKeyspressed = [], | ||
| multiple = 45, | ||
| angleKeys = [ | ||
| {angle: 0, keyCodes: [39]}, | ||
| {angle: 45, keyCodes: [39, 40]}, | ||
| {angle: 90, keyCodes: [40]}, | ||
| {angle: 135, keyCodes: [40, 37]}, | ||
| {angle: 180, keyCodes: [37]}, | ||
| {angle: -180, keyCodes: [37]}, | ||
| {angle: -135, keyCodes: [37, 38]}, | ||
| {angle: -90, keyCodes: [38]}, | ||
| {angle: -45, keyCodes: [38, 39]} | ||
| ]; //Angle is in degrees and should be a multiple of the var "multiple",x-axis to the right = 0 left = 180, y-axis down = 90 up = -90, one angle can occur multiple times, e.g. {angle: 30, keyCodes: [1]}, {angle: 30, keyCodes: [2]} will fire 1 and 2, {angle: 30, keyCodes: [1, 1]} will fire 1 twice, -180 and 180 should both be added; | ||
| if (!settings) { | ||
| settings = {}; | ||
| } | ||
| if (!elem) { | ||
| throw "Joystick Control: No element provided! Provided:" + elem; | ||
| } | ||
| settings.pretendArrowKeys = true; //Remove once non-pretend is implemented | ||
| if (!elem.style.position) { | ||
| elem.style.position = "relative"; | ||
| } | ||
| this.on = function (name, callback) { | ||
| callbackList.sort(function (a, b) {return a.id - b.id;}); //To get a unique id we need the highest id last | ||
| if (callbackList.length < 1) { | ||
| var next = 0; | ||
| } else { | ||
| var next = callbackList[callbackList.length - 1].id + 1; | ||
| } | ||
| callbackList.push({id: next, name: name, cb: callback}); | ||
| return next; | ||
| }; | ||
| this.removeOn = function (id) { | ||
| var i; | ||
| for (i = 0; i < callbackList.length; i++) { | ||
| if (callbackList[i].id === id) { | ||
| callbackList.splice(id); | ||
| return true; | ||
| } | ||
| } | ||
| return false; | ||
| }; | ||
| this.cb = function (name, arg) { | ||
| var i; | ||
| for (i = 0; i < callbackList.length; i++) { | ||
| if (callbackList[i].name === name && typeof callbackList[i].cb == "function") { | ||
| callbackList[i].cb(arg); | ||
| } | ||
| } | ||
| }; | ||
| this.removeNonFakedKeys = function (keys) { | ||
| for (var i = 0; i < fakeKeyspressed.length; i++) { | ||
| if (!self.inArray(fakeKeyspressed[i], keys)) { | ||
| self.cb("pretendKeyup", {keyCode: fakeKeyspressed[i]}); | ||
| } | ||
| } | ||
| }; | ||
| this.inArray = function (el, arr) { | ||
| if (!arr) { | ||
| return false; | ||
| } | ||
| for (var i = 0; i < arr.length; i++) { | ||
| if (arr[i] === el) { | ||
| return true; | ||
| } | ||
| } | ||
| return false; | ||
| }; | ||
| this.handleTouchStart = function (event) { | ||
| if (event.changedTouches[0].target == elem) { | ||
| originalStyle = elem.style; | ||
| if (!originalStyle.top) { | ||
| originalStyle.top = ""; | ||
| } | ||
| if (!originalStyle.left) { | ||
| originalStyle.left = ""; | ||
| } | ||
| if (settings.clickStyle) { | ||
| elem.style = settings.clickStyle; | ||
| } | ||
| originalX = event.changedTouches[0].clientX; | ||
| originalY = event.changedTouches[0].clientY; | ||
| elem.style.left = event.changedTouches[0].clientX - event.changedTouches[0].target.style.width.slice(0, -2) / 2 + "px"; | ||
| elem.style.top = event.changedTouches[0].clientY - event.changedTouches[0].target.style.height.slice(0, -2) / 2 + "px"; | ||
| event.preventDefault(); | ||
| } | ||
| }; | ||
| this.handleTouchStop = function (event) { | ||
| if (event.changedTouches[0].target == elem) { | ||
| elem.style = originalStyle; | ||
| self.removeNonFakedKeys(); | ||
| event.preventDefault(); | ||
| } | ||
| }; | ||
| this.handleTouchMove = function (event) { | ||
| if (event.changedTouches[0].target == elem) { | ||
| var i, k, keys = [], angle, | ||
| deltaX = event.changedTouches[0].clientX - originalX, | ||
| deltaY = event.changedTouches[0].clientY - originalY; | ||
| elem.style.left = event.changedTouches[0].clientX - event.changedTouches[0].target.style.width.slice(0, -2) / 2 + "px"; | ||
| elem.style.top = event.changedTouches[0].clientY - event.changedTouches[0].target.style.height.slice(0, -2) / 2 + "px"; | ||
| event.preventDefault(); | ||
| if (settings.pretendArrowKeys) { | ||
| angle = multiple * Math.round((Math.atan2(deltaY, deltaX) * 180 / Math.PI) / multiple); | ||
| for (i = 0; i < angleKeys.length; i++) { | ||
| if (angleKeys[i].angle === angle) { | ||
| for (k = 0; k < angleKeys[i].keyCodes.length; k++) { | ||
| keys.push(angleKeys[i].keyCodes[k]); | ||
| } | ||
| } | ||
| } | ||
| for (i = 0; i < keys.length; i++) { | ||
| if (!self.inArray(keys[i], fakeKeyspressed)) { | ||
| fakeKeyspressed.push(keys[i]); | ||
| } | ||
| self.cb("pretendKeydown", {keyCode: keys[i]}); | ||
| } | ||
| self.removeNonFakedKeys(keys); | ||
| } else { | ||
| //Planned for later | ||
| } | ||
| } | ||
| }; | ||
| elem.addEventListener("touchstart", self.handleTouchStart); | ||
| elem.addEventListener("touchend", self.handleTouchStop); | ||
| elem.addEventListener("touchmove", self.handleTouchMove); | ||
| }; |
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