Chromium Code Reviews
chromiumcodereview-hr@appspot.gserviceaccount.com (chromiumcodereview-hr) | Please choose your nickname with Settings | Help | Chromium Project | Gerrit Changes | Sign out
(55)

Issues Search
    My Issues | Starred     Open | Closed | All

Side by Side Diff: sky/examples/game/lib/game_world.dart

Issue 1151793003: Adds (somewhat crappy) controls to example game (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 5 years, 6 months ago
Use n/p to move between diff chunks; N/P to move between comments. Draft comments are only viewable by you.
Jump to:
View unified diff | Download patch
« no previous file with comments | « sky/examples/game/lib/game_box.dart ('k') | sky/examples/game/lib/sprite_box.dart » ('j') | sky/examples/game/lib/sprites.dart » ('J')
Toggle Intra-line Diffs ('i') | Expand Comments ('e') | Collapse Comments ('c') | Show Comments Hide Comments ('s')
OLDNEW
1 part of game; 1 part of game;
2 2
3 class GameWorld extends TransformNode { 3 class GameWorld extends TransformNode {
4 4
5 World world; 5 World world;
6 List<Body> bodies = []; 6 List<Body> bodies = [];
7 Image _image; 7 Body _bodyShip;
8
9 Image _imgBg;
10 Image _imgAsteroid;
11 Image _imgShip;
12
13 double _steeringInput;
14 double _thrustInput;
15 double _lastSteeringSpeed = 0.0;
8 16
9 GameWorld(ImageMap images) { 17 GameWorld(ImageMap images) {
10 this.width = 1024.0; 18 this.width = 1024.0;
11 this.height = 1024.0; 19 this.height = 1024.0;
12 20
21 // Fetch images
22 _imgBg = images["https://raw.githubusercontent.com/slembcke/GalacticGuardian .spritebuilder/GDC/Packages/SpriteBuilder%20Resources.sbpack/resources-auto/Burn Texture.png"];
23 _imgAsteroid = images["https://raw.githubusercontent.com/slembcke/GalacticGu ardian.spritebuilder/GDC/Packages/SpriteBuilder%20Resources.sbpack/Sprites/resou rces-auto/asteroid_big_002.png"];
24 _imgShip = images["https://raw.githubusercontent.com/slembcke/GalacticGuardi an.spritebuilder/GDC/Packages/SpriteBuilder%20Resources.sbpack/Sprites/resources -auto/GG_blueship_Lv3.png"];
25
26 // Create the physics world
13 world = new World.withGravity(new Vector2(0.0, 0.0)); 27 world = new World.withGravity(new Vector2(0.0, 0.0));
14 28
15 // Load and add background 29 // Add a background
16 Image imgBg = images["https://raw.githubusercontent.com/slembcke/GalacticGua rdian.spritebuilder/GDC/Packages/SpriteBuilder%20Resources.sbpack/resources-auto /BurnTexture.png"]; 30 addBackground();
17 SpriteNode sprtBg = new SpriteNode.withImage(imgBg); 31
32 // Add some asteroids to the game world
33 for (int i = 0; i < 5; i++) {
34 addAsteroid(10.0);
35 }
36 for (int i = 0; i < 5; i++) {
37 addAsteroid(20.0);
38 }
39
40 // Add ship
41 addShip();
42 }
43
44 void addBackground() {
45 SpriteNode sprtBg = new SpriteNode.withImage(_imgBg);
18 sprtBg.width = width; 46 sprtBg.width = width;
19 sprtBg.height = height; 47 sprtBg.height = height;
20 sprtBg.pivot = new Vector2(0.0, 0.0); 48 sprtBg.pivot = new Vector2(0.0, 0.0);
21 this.children.add(sprtBg); 49 this.children.add(sprtBg);
22
23 // Load asteroid image
24 _image = images["https://raw.githubusercontent.com/slembcke/GalacticGuardian .spritebuilder/GDC/Packages/SpriteBuilder%20Resources.sbpack/Sprites/resources-a uto/asteroid_big_002.png"];
25
26 // Add some asteroids to the game world
27 for (int i = 0; i < 50; i++) {
28 addAsteroid(10.0);
29 }
30 for (int i = 0; i < 50; i++) {
31 addAsteroid(20.0);
32 }
33 } 50 }
34 51
35 void addAsteroid([double radius=20.0]) { 52 void addAsteroid([double radius=20.0]) {
36 53
37 // Create shape 54 // Create shape
38 final CircleShape shape = new CircleShape(); 55 final CircleShape shape = new CircleShape();
39 shape.radius = radius; 56 shape.radius = radius;
40 57
41 // Define fixture (links body and shape) 58 // Define fixture (links body and shape)
42 final FixtureDef activeFixtureDef = new FixtureDef(); 59 final FixtureDef activeFixtureDef = new FixtureDef();
(...skipping 12 matching lines...) Expand all
55 final Body body = world.createBody(bodyDef); 72 final Body body = world.createBody(bodyDef);
56 body.createFixtureFromFixtureDef(activeFixtureDef); 73 body.createFixtureFromFixtureDef(activeFixtureDef);
57 74
58 // Set position of object 75 // Set position of object
59 Math.Random rand = new Math.Random(); 76 Math.Random rand = new Math.Random();
60 body.setTransform(new Vector2(rand.nextDouble() * this.width, rand.nextDoubl e() * this.height), 0.0); 77 body.setTransform(new Vector2(rand.nextDouble() * this.width, rand.nextDoubl e() * this.height), 0.0);
61 body.applyLinearImpulse(new Vector2(rand.nextDouble()*10000.0-5000.0, rand.n extDouble()*10000.0-5000.0), new Vector2(0.0, 0.0), true); 78 body.applyLinearImpulse(new Vector2(rand.nextDouble()*10000.0-5000.0, rand.n extDouble()*10000.0-5000.0), new Vector2(0.0, 0.0), true);
62 79
63 // Add to list 80 // Add to list
64 bodies.add(body); 81 bodies.add(body);
65 82
66 SpriteNode sprt = new SpriteNode.withImage(_image); 83 // Create sprite
84 SpriteNode sprt = new SpriteNode.withImage(_imgAsteroid);
67 sprt.width = radius*2; 85 sprt.width = radius*2;
68 sprt.height = radius*2; 86 sprt.height = radius*2;
69 sprt.colorOverlay = new Color(0x33ff0000); 87 // sprt.colorOverlay = new Color(0x33ff0000);
70 sprt.transferMode = TransferMode.plusMode; 88 // sprt.transferMode = TransferMode.plusMode;
89 body.userData = sprt;
90 this.children.add(sprt);
91 }
92
93 void addShip() {
94 double radius = 30.0;
95
96 // Create shape
97 final CircleShape shape = new CircleShape();
98 shape.radius = radius;
99
100 // Define fixture (links body and shape)
101 final FixtureDef activeFixtureDef = new FixtureDef();
102 activeFixtureDef.restitution = 1.0;
103 activeFixtureDef.density = 0.05;
104 activeFixtureDef.shape = shape;
105
106 // Define body
107 final BodyDef bodyDef = new BodyDef();
108 bodyDef.type = BodyType.DYNAMIC;
109 bodyDef.position = new Vector2(0.0, 30.0);
110 bodyDef.linearDamping = 0.0;
111 bodyDef.angularDamping = 0.95;
112
113 // Create body and fixture from definitions
114 final Body body = world.createBody(bodyDef);
115 body.createFixtureFromFixtureDef(activeFixtureDef);
116
117 // Center on screen
118 body.setTransform(new Vector2(width/2.0, height/2.0), 90.0);
119
120 // Add to list
121 bodies.add(body);
122 _bodyShip = body;
123
124 // Create sprite
125 SpriteNode sprt = new SpriteNode.withImage(_imgShip);
126 sprt.width = radius*2;
127 sprt.height = radius*2;
128 sprt.position = new Vector2(width/2.0, height/2.0);
71 body.userData = sprt; 129 body.userData = sprt;
72 this.children.add(sprt); 130 this.children.add(sprt);
73 } 131 }
74 132
75 void update(double dt) { 133 void update(double dt) {
134 // Apply thrust
135 if (_thrustInput != null) {
136 double force = _thrustInput*10000.0;
137 double rad = degrees2radians(_bodyShip.getAngle());
138 _bodyShip.applyLinearImpulse(new Vector2(Math.cos(rad)*force, Math.sin(rad )*force), new Vector2(0.0, 0.0), true);
139 }
140
141 // Simulate world
76 world.stepDt(1.0/60.0, 10, 10); // Pass in dt 142 world.stepDt(1.0/60.0, 10, 10); // Pass in dt
77 143
144 // Apply stearing
145 if (_steeringInput != null) {
146 _lastSteeringSpeed = _steeringInput * 4.0;
147 }
148 else {
149 _lastSteeringSpeed *= 0.75;
150 }
151 _bodyShip.setTransform(_bodyShip.position, _bodyShip.getAngle() + _lastSteer ingSpeed);
152
153 // Update all sprites
78 bodies.forEach(updateBody); 154 bodies.forEach(updateBody);
79 } 155 }
80 156
81 void updateBody(Body body) { 157 void updateBody(Body body) {
82 SpriteNode sprt = body.userData; 158 SpriteNode sprt = body.userData;
83 double rot = 0.0; //body.getRotation(); 159 double rot = 0.0; //body.getRotation();
84 160
85 // Check bounds and warp objects 161 // Check bounds and warp objects
86 if (body.position[0] < -sprt.width/2) { 162 if (body.position[0] < -sprt.width/2) {
87 body.setTransform(new Vector2(body.position[0] + this.width + sprt.width, body.position[1]), rot); 163 body.setTransform(new Vector2(body.position[0] + this.width + sprt.width, body.position[1]), rot);
88 } 164 }
89 if (body.position[0] > this.width + sprt.width/2) { 165 if (body.position[0] > this.width + sprt.width/2) {
90 body.setTransform(new Vector2(body.position[0] - (this.width + sprt.width) , body.position[1]), rot); 166 body.setTransform(new Vector2(body.position[0] - (this.width + sprt.width) , body.position[1]), rot);
91 } 167 }
92 if (body.position[1] < -sprt.height/2) { 168 if (body.position[1] < -sprt.height/2) {
93 body.setTransform(new Vector2(body.position[0], body.position[1] + this.he ight + sprt.height), rot); 169 body.setTransform(new Vector2(body.position[0], body.position[1] + this.he ight + sprt.height), rot);
94 } 170 }
95 if (body.position[1] > this.height + sprt.height/2) { 171 if (body.position[1] > this.height + sprt.height/2) {
96 body.setTransform(new Vector2(body.position[0], body.position[1] - (this.h eight + sprt.height)), rot); 172 body.setTransform(new Vector2(body.position[0], body.position[1] - (this.h eight + sprt.height)), rot);
97 } 173 }
98 174
99 // Update sprite 175 // Update sprite
100 sprt.position = body.position; 176 sprt.position = body.position;
101 sprt.rotation = body.getAngle(); 177 sprt.rotation = body.getAngle();
102 } 178 }
103 } 179
180 void controlSteering(double input) {
181 _steeringInput = input;
182 }
183
184 void controlThrust(double input) {
185 _thrustInput = input;
186 }
187
188 void controlFire() {
189
190 }
191 }
OLDNEW
« no previous file with comments | « sky/examples/game/lib/game_box.dart ('k') | sky/examples/game/lib/sprite_box.dart » ('j') | sky/examples/game/lib/sprites.dart » ('J')

Powered by Google App Engine
This is Rietveld 408576698