Working gravity + contacts + platformer demo :)

2026-07-29 11:24:31 +08:00 · 2014-02-18 17:25:54 +00:00
parent 1e29e28333
commit 7a8c96db37
3 changed files with 214 additions and 7 deletions
@@ -0,0 +1,157 @@
+
+var game = new Phaser.Game(800, 600, Phaser.CANVAS, 'phaser-example', { preload: preload, create: create, update: update, render: render });
+
+function preload() {
+
+    game.load.spritesheet('dude', 'assets/games/starstruck/dude.png', 32, 48);
+    game.load.image('background', 'assets/games/starstruck/background2.png');
+    game.load.image('box', 'assets/sprites/block.png');
+
+}
+
+var player;
+var facing = 'left';
+var jumpTimer = 0;
+var cursors;
+var jumpButton;
+var box1;
+var box2;
+
+function create() {
+
+    game.stage.backgroundColor = '#000000';
+
+    bg = game.add.tileSprite(0, 0, 800, 600, 'background');
+    bg.fixedToCamera = true;
+
+    // map = game.add.tilemap('level1');
+
+    // map.addTilesetImage('tiles-1');
+
+    // map.setCollisionByExclusion([ 13, 14, 15, 16, 46, 47, 48, 49, 50, 51 ]);
+
+    // layer = map.createLayer('Tile Layer 1');
+
+    //  Un-comment this on to see the collision tiles
+    // layer.debug = true;
+
+    // layer.resizeWorld();
+
+    // game.physics.setBoundsToWorld();
+
+    game.physics.gravity.y = 20;
+    game.physics.friction = 0.5;
+
+    //  Materials
+    var groundMaterial = game.physics.createMaterial('ground');
+    var characterMaterial = game.physics.createMaterial('character');
+    var boxMaterial = game.physics.createMaterial('box');
+
+    player = game.add.sprite(32, 320, 'dude');
+    player.physicsEnabled = true;
+    player.body.fixedRotation = true;
+    player.body.setMaterial(characterMaterial);
+
+    player.animations.add('left', [0, 1, 2, 3], 10, true);
+    player.animations.add('turn', [4], 20, true);
+    player.animations.add('right', [5, 6, 7, 8], 10, true);
+
+    box1 = game.add.sprite(200, 300, 'box');
+    box1.physicsEnabled = true;
+    // box1.body.fixedRotation = true;
+    box1.body.setMaterial(boxMaterial);
+
+    box2 = game.add.sprite(400, 300, 'box');
+    box2.physicsEnabled = true;
+    // box2.body.fixedRotation = true;
+    box2.body.setMaterial(boxMaterial);
+
+    //  Set the material along the ground
+    game.physics.setWorldMaterial(groundMaterial, false, false, false, true);
+
+    var groundCharacterCM = game.physics.createContactMaterial(groundMaterial, characterMaterial, { friction: 0.0 }); // no friction between character and ground
+    var boxCharacterCM = game.physics.createContactMaterial(boxMaterial, characterMaterial, { friction: 0.0 }); // No friction between character and boxes
+    var boxGroundCM = game.physics.createContactMaterial(boxMaterial, groundMaterial, { friction: 0.6 }); // Between boxes and ground
+
+    // game.camera.follow(player);
+
+    cursors = game.input.keyboard.createCursorKeys();
+    jumpButton = game.input.keyboard.addKey(Phaser.Keyboard.SPACEBAR);
+
+}
+
+function update() {
+
+    player.body.velocity.x = 0;
+
+    if (cursors.left.isDown)
+    {
+        player.body.moveLeft(150);
+
+        if (facing != 'left')
+        {
+            player.animations.play('left');
+            facing = 'left';
+        }
+    }
+    else if (cursors.right.isDown)
+    {
+        player.body.moveRight(150);
+
+        if (facing != 'right')
+        {
+            player.animations.play('right');
+            facing = 'right';
+        }
+    }
+    else
+    {
+        if (facing != 'idle')
+        {
+            player.animations.stop();
+
+            if (facing == 'left')
+            {
+                player.frame = 0;
+            }
+            else
+            {
+                player.frame = 5;
+            }
+
+            facing = 'idle';
+        }
+    }
+    
+    if (jumpButton.isDown && game.time.now > jumpTimer && checkIfCanJump())
+    {
+        player.body.moveUp(300);
+        jumpTimer = game.time.now + 750;
+    }
+
+}
+
+function checkIfCanJump(){
+var yAxis = p2.vec2.fromValues(0,1);
+var result = false;
+for(var i=0; i<game.physics.world.narrowphase.contactEquations.length; i++){
+  var c = game.physics.world.narrowphase.contactEquations[i];
+  if(c.bi === player.body.data || c.bj === player.body.data){
+    var d = p2.vec2.dot(c.ni,yAxis); // Normal dot Y-axis
+    if(c.bi === player.body.data) d *= -1;
+    if(d > 0.5) result = true;
+  }
+}
+return result;
+}
+
+
+function render () {
+
+    // if (player.debug)
+    // {
+    //     game.debug.renderPhysicsBody(player.body);
+    //     game.debug.renderBodyInfo(player, 16, 24);
+    // }
+
+}