added ag::object::getMass() and ag::object::setMass()

git-svn-id: svn://anubis/anaglym/trunk@179 99a6e188-d820-4881-8870-2d33a10e2619

tests/bowling.lua

@@ -15,20 +15,21 @@ function init()
     local ground = ag.createPlane(0, 0, 1, 0)
     ground:setColor(0.8, 0.5, 0.0)
     ground:setPosition(0, 0, -10)
-    ag.setCamera(0, -25, 10, 0, 0, 1, 0, 0, 1)
+    ag.setCamera(0.3, -25, 10, 0, 0, 1, 0, 0, 1)
     camx, camy, camz, cx, cy, cz = ag.getCamera()
 
     ball = ag.loadModel("checkerball", 0.5)
+    ball:setPosition(2*camx - cx, 2*camy - cy, 2*camz - cz)
+    ball:setMass(5)
     --ball = ag.createSphere(0.4)
     --ball:setColor(0.2, 0.2, 0.9)
-    ball:setPosition(2*camx - cx, 2*camy - cy, 2*camz - cz)
 end
 
 function mousebutton_down_event(button)
     local function button1()
         local newball = ball:clone()
         newball:setPosition(camx, camy, 1)
-        force = 800
+        force = 4000
         newball:addForce(force * (cx-camx),
                          force * (cy-camy),
                          force * (cz-camz))