static cpSpace *
init(void)
{
cpSpace *space = cpSpaceNew();
space->iterations = 10;
space->gravity = cpv(0, -GRAVITY);
// space->sleepTimeThreshold = 1000;
cpBody *body, *staticBody = cpSpaceGetStaticBody(space);
cpShape *shape;
// Create segments around the edge of the screen.
shape = cpSpaceAddShape(space, cpSegmentShapeNew(staticBody, cpv(-320,-240), cpv(-320,240), 0.0f));
shape->e = 1.0f; shape->u = 1.0f;
cpShapeSetFilter(shape, NOT_GRABBABLE_FILTER);
shape = cpSpaceAddShape(space, cpSegmentShapeNew(staticBody, cpv(320,-240), cpv(320,240), 0.0f));
shape->e = 1.0f; shape->u = 1.0f;
cpShapeSetFilter(shape, NOT_GRABBABLE_FILTER);
shape = cpSpaceAddShape(space, cpSegmentShapeNew(staticBody, cpv(-320,-240), cpv(320,-240), 0.0f));
shape->e = 1.0f; shape->u = 1.0f;
cpShapeSetFilter(shape, NOT_GRABBABLE_FILTER);
shape = cpSpaceAddShape(space, cpSegmentShapeNew(staticBody, cpv(-320,240), cpv(320,240), 0.0f));
shape->e = 1.0f; shape->u = 1.0f;
cpShapeSetFilter(shape, NOT_GRABBABLE_FILTER);
// Set up the player
body = cpSpaceAddBody(space, cpBodyNew(1.0f, INFINITY));
body->p = cpv(0, -200);
body->velocity_func = playerUpdateVelocity;
playerBody = body;
shape = cpSpaceAddShape(space, cpBoxShapeNew2(body, cpBBNew(-15.0, -27.5, 15.0, 27.5), 10.0));
// shape = cpSpaceAddShape(space, cpSegmentShapeNew(playerBody, cpvzero, cpv(0, radius), radius));
shape->e = 0.0f; shape->u = 0.0f;
shape->type = 1;
playerShape = shape;
// Add some boxes to jump on
for(int i=0; i<6; i++){
for(int j=0; j<3; j++){
body = cpSpaceAddBody(space, cpBodyNew(4.0f, INFINITY));
body->p = cpv(100 + j*60, -200 + i*60);
shape = cpSpaceAddShape(space, cpBoxShapeNew(body, 50, 50, 0.0));
shape->e = 0.0f; shape->u = 0.7f;
}
}
return space;
}
void init_physics()
{
// setup space
space = cpSpaceNew();
// setup tires
int i;
for(i=0; i<1; i++) {
cpFloat x = 0, y = 0, w = 0.5, h = 1.75;
cpFloat mass = 50;
cpFloat moment = cpMomentForBox(mass, w, h);
tire[i] = cpSpaceAddBody(space, cpBodyNew(mass, moment));
cpSpaceAddShape(space, cpBoxShapeNew2(tire[i],
cpBBNew(x-(w/2), y-(h/2), x+(w/2), y+(h/2))));
cpSpaceReindexShapesForBody(space, tire[0]);
cpBodySetAngle(tire[i], -M_PI/6);
//cpBodySetVel(tire[i], cpv(0, 10));
//cpBodyApplyImpulse(tire[i], cpv(0, 1000), cpvzero);
}
}
int l_physics_newBoxShape(lua_State* state)
{
l_tools_checkUserDataPlusErrMsg(state, 1, "You must provide a space!");
l_physics_PhysicsData* physics = (l_physics_PhysicsData*)lua_touserdata(state, 1);
l_tools_checkUserDataPlusErrMsg(state, 2, "You must provide a body");
l_physics_Body* body = (l_physics_Body*)lua_touserdata(state, 2);
float width = l_tools_toNumberOrError(state, 3);
float height = luaL_optnumber(state, 4, width);
float radius = luaL_optnumber(state, 5, 0.0f);
float offset_x = luaL_optnumber(state, 6, 0.0f);
float offset_y = luaL_optnumber(state, 7, 0.0f);
moduleData.shape = (l_physics_Shape*)lua_newuserdata(state, sizeof(l_physics_Shape));
moduleData.shape->physics = malloc(sizeof(physics_PhysicsData));
moduleData.shape->physics = physics->physics;
if (offset_x == 0 && offset_y == 0)
// No offset is needed
moduleData.shape->shape = cpSpaceAddShape(physics->physics->space, cpBoxShapeNew(body->body, width, height, radius));
else
{
//Apply offset to shape!
cpVect off = cpv(offset_x, offset_y);
cpBB bb = cpBBNewForExtents(off, width * 0.5f, height * 0.5f);
moduleData.shape->shape = cpSpaceAddShape(physics->physics->space, cpBoxShapeNew2(body->body, bb, radius));
}
lua_rawgeti(state, LUA_REGISTRYINDEX, moduleData.shapeMT);
lua_setmetatable(state, -2);
return 1;
}
cpSpace *Buoyancy::Init()
{
ChipmunkDemo::Init();
space = cpSpaceNew();
cpSpaceSetIterations(space, 30);
cpSpaceSetGravity(space, cpv(0, -500));
// cpSpaceSetDamping(space, 0.5);
cpSpaceSetSleepTimeThreshold(space, 0.5f);
cpSpaceSetCollisionSlop(space, 0.5f);
cpBody *body, *staticBody = cpSpaceGetStaticBody(space);
cpShape *shape;
// Create segments around the edge of the screen.
shape = cpSpaceAddShape(space, cpSegmentShapeNew(staticBody, cpv(-320,-240), cpv(-320,240), 0.0f));
cpShapeSetElasticity(shape, 1.0f);
cpShapeSetFriction(shape, 1.0f);
cpShapeSetFilter(shape, NOT_GRABBABLE_FILTER);
shape = cpSpaceAddShape(space, cpSegmentShapeNew(staticBody, cpv(320,-240), cpv(320,240), 0.0f));
cpShapeSetElasticity(shape, 1.0f);
cpShapeSetFriction(shape, 1.0f);
cpShapeSetFilter(shape, NOT_GRABBABLE_FILTER);
shape = cpSpaceAddShape(space, cpSegmentShapeNew(staticBody, cpv(-320,-240), cpv(320,-240), 0.0f));
cpShapeSetElasticity(shape, 1.0f);
cpShapeSetFriction(shape, 1.0f);
cpShapeSetFilter(shape, NOT_GRABBABLE_FILTER);
shape = cpSpaceAddShape(space, cpSegmentShapeNew(staticBody, cpv(-320,240), cpv(320,240), 0.0f));
cpShapeSetElasticity(shape, 1.0f);
cpShapeSetFriction(shape, 1.0f);
cpShapeSetFilter(shape, NOT_GRABBABLE_FILTER);
{
// Add the edges of the bucket
cpBB bb = cpBBNew(-300, -200, 100, 0);
cpFloat radius = 5.0f;
shape = cpSpaceAddShape(space, cpSegmentShapeNew(staticBody, cpv(bb.l, bb.b), cpv(bb.l, bb.t), radius));
cpShapeSetElasticity(shape, 1.0f);
cpShapeSetFriction(shape, 1.0f);
cpShapeSetFilter(shape, NOT_GRABBABLE_FILTER);
shape = cpSpaceAddShape(space, cpSegmentShapeNew(staticBody, cpv(bb.r, bb.b), cpv(bb.r, bb.t), radius));
cpShapeSetElasticity(shape, 1.0f);
cpShapeSetFriction(shape, 1.0f);
cpShapeSetFilter(shape, NOT_GRABBABLE_FILTER);
shape = cpSpaceAddShape(space, cpSegmentShapeNew(staticBody, cpv(bb.l, bb.b), cpv(bb.r, bb.b), radius));
cpShapeSetElasticity(shape, 1.0f);
cpShapeSetFriction(shape, 1.0f);
cpShapeSetFilter(shape, NOT_GRABBABLE_FILTER);
// Add the sensor for the water.
shape = cpSpaceAddShape(space, cpBoxShapeNew2(staticBody, bb, 0.0));
cpShapeSetSensor(shape, cpTrue);
cpShapeSetCollisionType(shape, 1);
}
{
cpFloat width = 200.0f;
cpFloat height = 50.0f;
cpFloat mass = 0.3*FLUID_DENSITY*width*height;
cpFloat moment = cpMomentForBox(mass, width, height);
body = cpSpaceAddBody(space, cpBodyNew(mass, moment));
cpBodySetPosition(body, cpv(-50, -100));
cpBodySetVelocity(body, cpv(0, -100));
cpBodySetAngularVelocity(body, 1);
shape = cpSpaceAddShape(space, cpBoxShapeNew(body, width, height, 0.0));
cpShapeSetFriction(shape, 0.8f);
}
{
cpFloat width = 40.0f;
cpFloat height = width*2;
cpFloat mass = 0.3*FLUID_DENSITY*width*height;
cpFloat moment = cpMomentForBox(mass, width, height);
body = cpSpaceAddBody(space, cpBodyNew(mass, moment));
cpBodySetPosition(body, cpv(-200, -50));
cpBodySetVelocity(body, cpv(0, -100));
cpBodySetAngularVelocity(body, 1);
shape = cpSpaceAddShape(space, cpBoxShapeNew(body, width, height, 0.0));
cpShapeSetFriction(shape, 0.8f);
}
cpCollisionHandler *handler = cpSpaceAddCollisionHandler(space, 1, 0);
handler->preSolveFunc = (cpCollisionPreSolveFunc)WaterPreSolve;
handler->userData = this;
return space;
}
