Jump to content

Game gravity and sprite gravity


Sarahjdes
 Share

Recommended Posts

My question is pretty simple : what is the difference between sprite gravity and game gravity? Like these : 

this.game.physics.arcade.gravity.y = 300;this.player.body.gravity.y = 300;

From what I understand, game gravity will be applied to all my sprites, while I would have to specify it for every sprite if I use the sprite gravity. Is that right?

 

Looking at the following example, I understand the behavior of sprite1 and sprite4, but not the other two. (Last time I took physics classes was 5 years ago.) How do they work exactly?

 

http://examples.phaser.io/_site/view_full.html?d=arcade%20physics&f=gravity.js&t=gravity

 

Thanks! 

Link to comment
Share on other sites

I'm still not sure I understand this example the following example. What does « Sprite 3 will use both the world gravity and its own gravityScale modifier » mean? I don't see how it is different from Sprite 2. 

// Set the world (global) gravitygame.physics.arcade.gravity.y = 100;// Sprite 1 will use the World (global) gravitysprite1 = game.add.sprite(100, 96, 'ilkke');// Sprite 2 is set to ignore the global gravity and use its own valuesprite2 = game.add.sprite(300, 96, 'ilkke');// Sprite 3 will use both the world gravity and its own gravityScale modifiersprite3 = game.add.sprite(500, 96, 'ilkke');// Sprite 4 will ignore all gravitysprite4 = game.add.sprite(700, 96, 'ilkke');// Enable physics on those spritesgame.physics.enable( [ sprite1, sprite2, sprite3, sprite4 ], Phaser.Physics.ARCADE);sprite1.body.collideWorldBounds = true;sprite1.body.bounce.y = 0.8;sprite2.body.collideWorldBounds = true;sprite2.body.bounce.y = 0.8;sprite2.body.gravity.y = 200;sprite3.body.collideWorldBounds = true;sprite3.body.bounce.y = 0.8;sprite3.body.gravity.y = 50;sprite4.body.allowGravity = false;
Link to comment
Share on other sites

Hmm, I think that example is at fault and confusing matters; it's possibly been updated from some old version of the physics engine but not fully, as apart from the value sprites 2 and 3 are basically the same, they will both use their own gravity instead of world gravity.

Link to comment
Share on other sites

 Share

  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...