In code bellow ball falls in required point on ground but with small velocity. How to increase ball velocity with saving target point? Help please.
1 2 3 4 5 6 7 8 9 10 11 12 | physics = require("physics") physics.setDrawMode( "hybrid" ) physics.start() ground = display.newRect(0, 0.75*display.contentHeight, display.contentWidth, display.contentHeight/4) physics.addBody(ground, "static", {friction=2}) ball = display.newCircle(40, 0.75*display.contentHeight-8, 8) ball:setFillColor(255,0,0) physics.addBody(ball, {friction=1, radius=8}) ball:setLinearVelocity(100,-200) |
How about this (or you could play with the gravity setting) :
1 2 3 4 5 6 7 8 9 10 11 12 | physics = require("physics") physics.setDrawMode( "hybrid" ) physics.start() ground = display.newRect(0, 0.75*display.contentHeight, display.contentWidth, display.contentHeight/4) physics.addBody(ground, "static", {friction=2}) ball = display.newCircle(40, 0.75*display.contentHeight-8, 8) ball:setFillColor(255,0,0) physics.addBody(ball, {friction=1, radius=8}) ball:setLinearVelocity(100,-400) -- change the second value to increase the speed |
If I will do it, target point (point where ball collide with ground after motion) is changed. And I need to save target point coordinates. Changing gravity doesn't help because ball flies farther.
Ok. Do you want to stop the ball when it hits the ground ?
No. In my code ball hits the ground (after arc motion) in specified target point. Everything is good, but I do not like movement velocity. I need to increase velocity but my specified target point should not be changed.
views:1330 update：2011/10/15 21:01:16