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comparison trunk/tests/ChipmunkDemos/samples/Tumble.d @ 16:af2f61a96318

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ported chipmunk demos
author Extrawurst
date Sat, 04 Dec 2010 02:02:29 +0100
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children 4604c914f2ab
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15:df4ebc8add66 16:af2f61a96318
1
2 // written in the D programming language
3
4 module samples.Tumble;
5
6 import chipmunkd.chipmunk;
7
8 import samples.ChipmunkDemo;
9
10 static cpSpace *space;
11 static cpBody *staticBody;
12
13 static void
14 update(int ticks)
15 {
16 enum int steps = 3;
17 enum cpFloat dt = 1.0f/60.0f/cast(cpFloat)steps;
18
19 for(int i=0; i<steps; i++){
20 cpSpaceStep(space, dt);
21
22 // Manually update the position of the static shape so that
23 // the box rotates.
24 cpBodyUpdatePosition(staticBody, dt);
25
26 // Because the box was added as a static shape and we moved it
27 // we need to manually rehash the static spatial hash.
28 cpSpaceRehashStatic(space);
29 }
30 }
31
32 static cpSpace *
33 init()
34 {
35 staticBody = cpBodyNew(INFINITY, INFINITY);
36
37 cpResetShapeIdCounter();
38
39 space = cpSpaceNew();
40 cpSpaceResizeActiveHash(space, 40.0f, 999);
41 cpSpaceResizeStaticHash(space, 40.0f, 99);
42 space.gravity = cpv(0, -600);
43
44 cpBody *_body;
45 cpShape *shape;
46
47 // Vertexes for the bricks
48 int num = 4;
49 cpVect verts[] = [
50 cpv(-30,-15),
51 cpv(-30, 15),
52 cpv( 30, 15),
53 cpv( 30,-15),
54 ];
55
56 // Set up the static box.
57 cpVect a = cpv(-200, -200);
58 cpVect b = cpv(-200, 200);
59 cpVect c = cpv( 200, 200);
60 cpVect d = cpv( 200, -200);
61
62 shape = cpSpaceAddShape(space, cpSegmentShapeNew(staticBody, a, b, 0.0f));
63 shape.e = 1.0f; shape.u = 1.0f;
64 shape.layers = NOT_GRABABLE_MASK;
65
66 shape = cpSpaceAddShape(space, cpSegmentShapeNew(staticBody, b, c, 0.0f));
67 shape.e = 1.0f; shape.u = 1.0f;
68 shape.layers = NOT_GRABABLE_MASK;
69
70 shape = cpSpaceAddShape(space, cpSegmentShapeNew(staticBody, c, d, 0.0f));
71 shape.e = 1.0f; shape.u = 1.0f;
72 shape.layers = NOT_GRABABLE_MASK;
73
74 shape = cpSpaceAddShape(space, cpSegmentShapeNew(staticBody, d, a, 0.0f));
75 shape.e = 1.0f; shape.u = 1.0f;
76 shape.layers = NOT_GRABABLE_MASK;
77
78 // Give the box a little spin.
79 // Because staticBody is never added to the space, we will need to
80 // update it ourselves. (see above).
81 // NOTE: Normally you would want to add the segments as normal and not static shapes.
82 // I'm just doing it to demonstrate the cpSpaceRehashStatic() function.
83 staticBody.w = 0.4f;
84
85 int foo;
86 // Add the bricks.
87 for(int i=0; i<3; i++){
88 for(int j=0; j<7; j++){
89 _body = cpSpaceAddBody(space, cpBodyNew(1.0f, cpMomentForPoly(1.0f, num, verts.ptr, cpvzero)));
90 _body.p = cpv(i*60 - 150, j*30 - 150);
91
92 //BUG: crazy fucking dmd codegen bug when optimizing (2.050)
93 foo = i+j;
94
95 shape = cpSpaceAddShape(space, cpPolyShapeNew(_body, num, verts.ptr, cpvzero));
96 shape.e = 0.0f; shape.u = 0.7f;
97 }
98 }
99
100 return space;
101 }
102
103 static void
104 destroy()
105 {
106 cpBodyFree(staticBody);
107 cpSpaceFreeChildren(space);
108 cpSpaceFree(space);
109 }
110
111 chipmunkDemo Tumble = {
112 "Tumble",
113 null,
114 &init,
115 &update,
116 &destroy,
117 };