1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
|
using System;
using System.Collections.Generic;
using System.Text;
using Box2D.Net;
using Tao.OpenGl;
namespace TestBed.Net
{
public class Test
{
public World world;
public MouseJoint mouseJoint;
public Body bomb;
public float Zoom = 20;
public Vector ViewOffset = new Vector();
public Vector Mouse = null;
public Test()
{
AABB worldAABB = new AABB(new Vector(-100.0f, -100.0f), new Vector(100.0f, 200.0f));
Vector gravity = new Vector(0, -10);
bool doSleep = true;
world = new World(worldAABB, gravity, doSleep);
//m_textLine = 30;
//
//m_listener.test = this;
//m_world->SetListener(&m_listener);
}
public void Step(Settings settings)
{
if(settings.Pause)
return;
float timeStep = settings.Hz > 0 ? 1.0f / settings.Hz : 0;
World.WarmStarting = settings.WarmStarting;
World.PositionCorrection = settings.PositionCorrection;
world.Step(timeStep, settings.IterationCount);
//m_world->m_broadPhase->Validate();
}
Vector RelativeToWorld(Vector Relative)
{
Vector working = Relative;
working *= Zoom;
working -= ViewOffset;
return working;
}
/// <summary>
/// Handles what happens when a user clicks the mouse
/// </summary>
/// <param name="p">
/// The position of the mouse click in relative coordinates.
/// </param>
public void MouseDown(Vector point)
{
Vector p = RelativeToWorld(point);
if (mouseJoint != null)
throw new Exception("ASSERT: mouseJoint should be null");
// Make a small box.
Vector d = new Vector(.001f, .001f);
AABB aabb = new AABB(p - d, p + d);
// Query the world for overlapping shapes.
IList<Shape> shapes = world.Query(aabb);
Body body = null;
foreach (Shape shape in shapes)
{
if (shape.Body.Static == false &&
shape.TestPoint(shape.Body.GetXForm(), p))
{
body = shape.Body;
break;
}
}
if (body != null)
{
MouseJointDef md = new MouseJointDef();
md.Body1 = world.GetGroundBody();
md.Body2 = body;
md.Target = p;
md.MaxForce = 1000 * body.Mass;
mouseJoint = new MouseJoint(world.CreateJoint(md));
body.WakeUp();
}
}
public void MouseUp(Vector point)
{
Vector p = RelativeToWorld(point);
if (mouseJoint != null)
{
world.DestroyJoint(mouseJoint);
mouseJoint = null;
}
}
public void MouseMove(Vector point)
{
Vector p = RelativeToWorld(point);
if (mouseJoint != null)
mouseJoint.SetTarget(p);
}
public void KeyPress(System.Windows.Forms.Keys key)
{
switch (key)
{
case System.Windows.Forms.Keys.Space:
LaunchBomb();
break;
case System.Windows.Forms.Keys.Left:
ViewOffset.X -= 1;
break;
case System.Windows.Forms.Keys.Right:
ViewOffset.X += 1;
break;
case System.Windows.Forms.Keys.Up:
ViewOffset.Y += 1;
break;
case System.Windows.Forms.Keys.Down:
ViewOffset.Y -= 1;
break;
case System.Windows.Forms.Keys.X:
Zoom -= 1;
break;
case System.Windows.Forms.Keys.Z:
Zoom += 1;
break;
}
}
void LaunchBomb()
{
if (bomb != null)
{
world.DestroyBody(bomb);
bomb = null;
}
BodyDef bd = new BodyDef();
bd.BodyType = BodyType.e_dynamicBody;
bd.AllowSleep = true;
Random rand = new Random();
bd.Position = new Vector((float)rand.NextDouble() * 30 - 15, 30.0f);
bd.IsBullet = true;
bomb = world.CreateBody(bd);
bomb.LinearVelocity = bd.Position * -5;
CircleDef sd = new CircleDef();
sd.Radius = 0.3f;
sd.Density = 20.0f;
sd.Restitution = 0.1f;
bomb.CreateShape(sd);
bomb.SetMassFromShapes();
}
public override string ToString()
{
return GetType().Name;
}
};
}
|
