Created
June 27, 2013 19:15
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| function character:move() | |
| --Localized variables and function calls | |
| local mCos, mSin = math.cos, math.sin | |
| local group = self.group | |
| --Closure enterFrame | |
| local function onEachFrame(event) | |
| local speed = self.speed or 0 | |
| local angle = self.angle or 0 | |
| local xval = mCos(angle) * speed | |
| local yval = -mSin(angle) * speed | |
| group:translate(xval, yval) | |
| end | |
| Runtime:addEventListener('enterFrame', onEachFrame) | |
| end | |
| function character:jump() | |
| local power = self.jumpPower --Let's say it's 3 | |
| local airTime = self.airTime --Let's say 1000 ms | |
| local fpms = 60/1000 --Frames per ms = 0.06 | |
| local totFrames = airTime * fpms --Total frames (= 60) | |
| local curFrame = 1 --Current frame (starting at 1) | |
| local function onEachFrame(event) | |
| if (curFrame <= totFrames) then | |
| curFrame = curFrame +1 | |
| --use parabolic equation: y = -4 * (x-0.5)^2 +1 | |
| local progress = curFrame / totFrames | |
| local x = progress-0.5 | |
| local dy = (4 * (x*x) +1) * power | |
| group:translate(0,dy) | |
| else | |
| --Jump finished, stop running onEachFrame | |
| Runtime:removeEventListener('enterFrame', onEachFrame) | |
| end | |
| end | |
| Runtime:addEventListener('enterFrame', onEachFrame) | |
| end | |
| function character:touch(event) | |
| if (event.phase == 'began') then | |
| self:jump() | |
| end | |
| end | |
| --start moving and listening for jumps! | |
| character:move() | |
| Runtime:addEventListener('touch', character) |
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