mirror of https://github.com/axmolengine/axmol.git
134 lines
4.3 KiB
C
134 lines
4.3 KiB
C
/* Copyright (c) 2007 Scott Lembcke
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*/
|
|
|
|
#include "chipmunk/chipmunk.h"
|
|
#include "ChipmunkDemo.h"
|
|
|
|
static cpFloat pentagon_mass = 0.0f;
|
|
static cpFloat pentagon_moment = 0.0f;
|
|
|
|
// Iterate over all of the bodies and reset the ones that have fallen offscreen.
|
|
static void eachBody(cpBody* body, void* unused)
|
|
{
|
|
cpVect pos = cpBodyGetPosition(body);
|
|
if (pos.y < -260)
|
|
{
|
|
cpFloat x = rand() / (cpFloat)RAND_MAX * 640 - 320;
|
|
cpBodySetPosition(body, cpv(x, 260));
|
|
}
|
|
}
|
|
|
|
static void update(cpSpace* space, double dt)
|
|
{
|
|
if (ChipmunkDemoRightDown)
|
|
{
|
|
ChipmunkDemoRightDown = cpFalse;
|
|
cpShape* nearest = cpSpacePointQueryNearest(space, ChipmunkDemoMouse, 0.0, GRAB_FILTER, NULL);
|
|
if (nearest)
|
|
{
|
|
cpBody* body = cpShapeGetBody(nearest);
|
|
if (cpBodyGetType(body) == CP_BODY_TYPE_STATIC)
|
|
{
|
|
cpBodySetType(body, CP_BODY_TYPE_DYNAMIC);
|
|
cpBodySetMass(body, pentagon_mass);
|
|
cpBodySetMoment(body, pentagon_moment);
|
|
}
|
|
else if (cpBodyGetType(body) == CP_BODY_TYPE_DYNAMIC)
|
|
{
|
|
cpBodySetType(body, CP_BODY_TYPE_STATIC);
|
|
}
|
|
}
|
|
}
|
|
|
|
cpSpaceEachBody(space, &eachBody, NULL);
|
|
cpSpaceStep(space, dt);
|
|
}
|
|
|
|
#define NUM_VERTS 5
|
|
|
|
static cpSpace* init(void)
|
|
{
|
|
ChipmunkDemoMessageString = "Right click to make pentagons static/dynamic.";
|
|
|
|
cpSpace* space = cpSpaceNew();
|
|
cpSpaceSetIterations(space, 5);
|
|
cpSpaceSetGravity(space, cpv(0, -100));
|
|
|
|
cpBody *body, *staticBody = cpSpaceGetStaticBody(space);
|
|
cpShape* shape;
|
|
|
|
// Vertexes for a triangle shape.
|
|
cpVect tris[] = {
|
|
cpv(-15, -15),
|
|
cpv(0, 10),
|
|
cpv(15, -15),
|
|
};
|
|
|
|
// Create the static triangles.
|
|
for (int i = 0; i < 10; i++)
|
|
{
|
|
for (int j = 0; j < 6; j++)
|
|
{
|
|
cpFloat stagger = (j % 2) * 40;
|
|
cpVect offset = cpv(i * 80 - 360 + stagger, j * 70 - 200);
|
|
shape = cpSpaceAddShape(space, cpPolyShapeNew(staticBody, 3, tris, cpTransformTranslate(offset), 0.0));
|
|
cpShapeSetElasticity(shape, 1.0f);
|
|
cpShapeSetFriction(shape, 1.0f);
|
|
cpShapeSetFilter(shape, NOT_GRABBABLE_FILTER);
|
|
}
|
|
}
|
|
|
|
// Create vertexes for a pentagon shape.
|
|
cpVect verts[NUM_VERTS];
|
|
for (int i = 0; i < NUM_VERTS; i++)
|
|
{
|
|
cpFloat angle = -2.0f * CP_PI * i / ((cpFloat)NUM_VERTS);
|
|
verts[i] = cpv(10 * cos(angle), 10 * sin(angle));
|
|
}
|
|
|
|
pentagon_mass = 1.0;
|
|
pentagon_moment = cpMomentForPoly(1.0f, NUM_VERTS, verts, cpvzero, 0.0f);
|
|
|
|
// Add lots of pentagons.
|
|
for (int i = 0; i < 300; i++)
|
|
{
|
|
body = cpSpaceAddBody(space, cpBodyNew(pentagon_mass, pentagon_moment));
|
|
cpFloat x = rand() / (cpFloat)RAND_MAX * 640 - 320;
|
|
cpBodySetPosition(body, cpv(x, 350));
|
|
|
|
shape = cpSpaceAddShape(space, cpPolyShapeNew(body, NUM_VERTS, verts, cpTransformIdentity, 0.0));
|
|
cpShapeSetElasticity(shape, 0.0f);
|
|
cpShapeSetFriction(shape, 0.4f);
|
|
}
|
|
|
|
return space;
|
|
}
|
|
|
|
static void destroy(cpSpace* space)
|
|
{
|
|
ChipmunkDemoFreeSpaceChildren(space);
|
|
cpSpaceFree(space);
|
|
}
|
|
|
|
ChipmunkDemo Plink = {
|
|
"Plink", 1.0 / 60.0, init, update, ChipmunkDemoDefaultDrawImpl, destroy,
|
|
};
|