Quick-lua 中使用box2d

1 网上找到了别人写好的包， 但放到项目里报几个错，地址如下。 

Box2D lua binding pkg and c++ files: LuaBox2D.zip

 

2 把包中的LuaBox2D.h, LuaBox2d.cpp 放到 Class/ 目录中。 编译， 但报N个错误， 挨个修改， 下面是修改后的文件 

LuaBox2D.cpp
1.0 MB

LuaBox2D.h
189 bytes

 

3 在lua中调用box2d相关函数

 

local PTM_RATIO = 32.0

 

local gravity = b2Vec2(0.0, -10.0)

local _world = b2World:new_local(gravity)

-- Create edges around the entire screen

local groundBodyDef = b2BodyDef:new_local()

groundBodyDef.position = b2Vec2(0, 0)

local groundBody = _world:CreateBody(groundBodyDef)

 

 

local groundEdge = b2EdgeShape:new_local()

local boxShapeDef = b2FixtureDef:new_local()

boxShapeDef.shape = groundEdge

 

local winSize = cc.Director:getInstance():getWinSize();

groundEdge:Set(b2Vec2(0,0), b2Vec2(winSize.width/PTM_RATIO, 0))

groundBody:CreateFixture(boxShapeDef)

 

groundEdge:Set(b2Vec2(0,0), b2Vec2(0, winSize.height/PTM_RATIO))

groundBody:CreateFixture(boxShapeDef)

 

groundEdge:Set(b2Vec2(0, winSize.height/PTM_RATIO), b2Vec2(winSize.width/PTM_RATIO, winSize.height/PTM_RATIO))

groundBody:CreateFixture(boxShapeDef)

 

groundEdge:Set(b2Vec2(winSize.width/PTM_RATIO, winSize.height/PTM_RATIO), b2Vec2(winSize.width/PTM_RATIO, 0))

groundBody:CreateFixture(boxShapeDef)

 

body_list = {}

sprite_list = {}

 

local x = 100

local y = 500

local sp = cc.Sprite:create("center0.png")

sp:setPosition(cc.p(100, 100))

self:addChild(sp, 1, 100)

table.insert(sprite_list, sp);

 

-- Create body and shape

local bodyDef = b2BodyDef:new_local()

bodyDef.type = b2_dynamicBody

bodyDef.position:Set(x/PTM_RATIO, y/PTM_RATIO)

bodyDef.userData = sp

local _body = _world:CreateBody(bodyDef)

 

local circle = b2CircleShape:new_local()

circle.m_radius = 26.0/PTM_RATIO

 

shapeDef = b2FixtureDef:new_local()

shapeDef.shape = circle

shapeDef.density = 1.0

shapeDef.friction = 0.2

shapeDef.restitution = 0.8

_body:CreateFixture(shapeDef)

 

table.insert(body_list, _body)

-- tick

local function tick(dt)

_world:Step(dt, 10, 10)

if body_list ~= nil then

for i, body in ipairs(body_list) do

local sprite = sprite_list[i]

sprite:setPosition(cc.p(body:GetPosition().x * PTM_RATIO, body:GetPosition().y * PTM_RATIO))

-- sprite:setRotation(-1 * CC_RADIANS_TO_DEGREES(body:GetAngle()))

end

end

end

 

cc.Director:getInstance():getScheduler():scheduleScriptFunc(tick, 0, false)

 

 

参考：

http://www.cnblogs.com/zhongzf/archive/2012/06/10/2544002.html