mirror of https://github.com/axmolengine/axmol.git
96 lines
2.8 KiB
Lua
96 lines
2.8 KiB
Lua
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require "luaScript.extern"
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require "luaScript.VisibleRect"
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require "luaScript.TouchesTest.Paddle"
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Ball = class("Ball", function(texture)
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return CCSprite:createWithTexture(texture)
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end)
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Ball.__index = Ball
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Ball.m_velocity = ccp(0,0)
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local M_PI = 3.1415926
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function Ball:radius()
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local size = self:getTexture():getContentSize()
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return size.width/2
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end
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function Ball:move(delta)
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local getPosition = ccp(self:getPosition())
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local position = ccpMult(self.m_velocity, delta)
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self:setPosition( ccpAdd(getPosition, position) );
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if (getPosition.x > VisibleRect:right().x - self:radius()) then
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self:setPosition( ccp( VisibleRect:right().x - self:radius(), getPosition.y) );
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self.m_velocity.x = self.m_velocity.x * -1;
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elseif (getPosition.x < VisibleRect:left().x + self:radius()) then
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self:setPosition( ccp(VisibleRect:left().x + self:radius(), getPosition.y) );
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self.m_velocity.x = self.m_velocity.x * -1;
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end
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end
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function Ball:collideWithPaddle(paddle)
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local paddleRect = paddle:rect()
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local paddleGetPosition = ccp(paddle:getPosition())
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local selfGetPosition = ccp(self:getPosition())
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paddleRect.origin.x = paddleRect.origin.x + paddleGetPosition.x;
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paddleRect.origin.y = paddleRect.origin.y + paddleGetPosition.y;
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local lowY = paddleRect:getMinY();
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local midY = paddleRect:getMidY();
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local highY = paddleRect:getMaxY();
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local leftX = paddleRect:getMinX();
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local rightX = paddleRect:getMaxX();
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if (selfGetPosition.x > leftX and selfGetPosition.x < rightX) then
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local hit = false;
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local angleOffset = 0.0;
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if (selfGetPosition.y > midY and selfGetPosition.y <= highY + self:radius()) then
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self:setPosition( ccp(selfGetPosition.x, highY + self:radius()) );
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hit = true;
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angleOffset = M_PI / 2;
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elseif (selfGetPosition.y < midY and selfGetPosition.y >= lowY - self:radius()) then
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self:setPosition( ccp(selfGetPosition.x, lowY - self:radius()) );
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hit = true;
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angleOffset = -M_PI / 2;
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end
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if (hit) then
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local hitAngle = ccpToAngle(ccpSub(paddleGetPosition, paddleGetPosition)) + angleOffset;
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local scalarVelocity = ccpLength(self.m_velocity) * 1.05;
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local velocityAngle = -ccpToAngle(self.m_velocity) + 0.5 * hitAngle;
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self.m_velocity = ccpMult(ccpForAngle(velocityAngle), scalarVelocity);
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end
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end
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end
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function Ball:setVelocity(velocity)
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self.m_velocity = velocity
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end
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function Ball:getVelocity()
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return self.m_velocity
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end
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function Ball.ballWithTexture(aTexture)
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if(aTexture == nil) then
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cclog("in ballWithTexture aTexture == nil")
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end
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local ball = Ball.new(aTexture)
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ball:autorelease()
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return ball
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end
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