mirror of https://github.com/axmolengine/axmol.git
185 lines
6.9 KiB
C++
185 lines
6.9 KiB
C++
/* Copyright (c) 2007 Scott Lembcke
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "chipmunk/chipmunk.h"
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#include "ChipmunkDemo.h"
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static cpConstraint* motor;
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#define numBalls 5
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static cpBody* balls[numBalls];
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static void update(cpSpace* space, double dt)
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{
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cpFloat coef = (2.0f + ChipmunkDemoKeyboard.y) / 3.0f;
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cpFloat rate = ChipmunkDemoKeyboard.x * 30.0f * coef;
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cpSimpleMotorSetRate(motor, rate);
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cpConstraintSetMaxForce(motor, rate ? 1000000.0f : 0.0f);
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cpSpaceStep(space, dt);
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for (int i = 0; i < numBalls; i++)
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{
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cpBody* ball = balls[i];
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cpVect pos = cpBodyGetPosition(ball);
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if (pos.x > 320.0f)
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{
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cpBodySetVelocity(ball, cpvzero);
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cpBodySetPosition(ball, cpv(-224.0f, 200.0f));
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}
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}
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}
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static cpBody* add_ball(cpSpace* space, cpVect pos)
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{
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cpBody* body = cpSpaceAddBody(space, cpBodyNew(1.0f, cpMomentForCircle(1.0f, 30, 0, cpvzero)));
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cpBodySetPosition(body, pos);
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cpShape* shape = cpSpaceAddShape(space, cpCircleShapeNew(body, 30, cpvzero));
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cpShapeSetElasticity(shape, 0.0f);
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cpShapeSetFriction(shape, 0.5f);
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return body;
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}
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static cpSpace* init(void)
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{
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ChipmunkDemoMessageString = "Use the arrow keys to control the machine.";
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cpSpace* space = cpSpaceNew();
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cpSpaceSetGravity(space, cpv(0, -600));
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cpBody* staticBody = cpSpaceGetStaticBody(space);
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cpShape* shape;
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// beveling all of the line segments slightly helps prevent things from getting stuck on cracks
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shape = cpSpaceAddShape(space, cpSegmentShapeNew(staticBody, cpv(-256, 16), cpv(-256, 300), 2.0f));
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cpShapeSetElasticity(shape, 0.0f);
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cpShapeSetFriction(shape, 0.5f);
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cpShapeSetFilter(shape, NOT_GRABBABLE_FILTER);
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shape = cpSpaceAddShape(space, cpSegmentShapeNew(staticBody, cpv(-256, 16), cpv(-192, 0), 2.0f));
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cpShapeSetElasticity(shape, 0.0f);
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cpShapeSetFriction(shape, 0.5f);
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cpShapeSetFilter(shape, NOT_GRABBABLE_FILTER);
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shape = cpSpaceAddShape(space, cpSegmentShapeNew(staticBody, cpv(-192, 0), cpv(-192, -64), 2.0f));
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cpShapeSetElasticity(shape, 0.0f);
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cpShapeSetFriction(shape, 0.5f);
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cpShapeSetFilter(shape, NOT_GRABBABLE_FILTER);
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shape = cpSpaceAddShape(space, cpSegmentShapeNew(staticBody, cpv(-128, -64), cpv(-128, 144), 2.0f));
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cpShapeSetElasticity(shape, 0.0f);
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cpShapeSetFriction(shape, 0.5f);
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cpShapeSetFilter(shape, NOT_GRABBABLE_FILTER);
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shape = cpSpaceAddShape(space, cpSegmentShapeNew(staticBody, cpv(-192, 80), cpv(-192, 176), 2.0f));
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cpShapeSetElasticity(shape, 0.0f);
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cpShapeSetFriction(shape, 0.5f);
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cpShapeSetFilter(shape, NOT_GRABBABLE_FILTER);
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shape = cpSpaceAddShape(space, cpSegmentShapeNew(staticBody, cpv(-192, 176), cpv(-128, 240), 2.0f));
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cpShapeSetElasticity(shape, 0.0f);
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cpShapeSetFriction(shape, 0.5f);
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cpShapeSetFilter(shape, NOT_GRABBABLE_FILTER);
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shape = cpSpaceAddShape(space, cpSegmentShapeNew(staticBody, cpv(-128, 144), cpv(192, 64), 2.0f));
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cpShapeSetElasticity(shape, 0.0f);
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cpShapeSetFriction(shape, 0.5f);
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cpShapeSetFilter(shape, NOT_GRABBABLE_FILTER);
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cpVect verts[] = {
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cpv(-30, -80),
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cpv(-30, 80),
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cpv(30, 64),
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cpv(30, -80),
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};
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cpBody* plunger = cpSpaceAddBody(space, cpBodyNew(1.0f, INFINITY));
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cpBodySetPosition(plunger, cpv(-160, -80));
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shape = cpSpaceAddShape(space, cpPolyShapeNew(plunger, 4, verts, cpTransformIdentity, 0.0));
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cpShapeSetElasticity(shape, 1.0f);
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cpShapeSetFriction(shape, 0.5f);
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cpShapeSetFilter(shape, cpShapeFilterNew(CP_NO_GROUP, 1, 1));
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// add balls to hopper
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for (int i = 0; i < numBalls; i++)
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balls[i] = add_ball(space, cpv(-224 + i, 80 + 64 * i));
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// add small gear
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cpBody* smallGear = cpSpaceAddBody(space, cpBodyNew(10.0f, cpMomentForCircle(10.0f, 80, 0, cpvzero)));
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cpBodySetPosition(smallGear, cpv(-160, -160));
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cpBodySetAngle(smallGear, -CP_PI / 2.0f);
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shape = cpSpaceAddShape(space, cpCircleShapeNew(smallGear, 80.0f, cpvzero));
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cpShapeSetFilter(shape, CP_SHAPE_FILTER_NONE);
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cpSpaceAddConstraint(space, cpPivotJointNew2(staticBody, smallGear, cpv(-160, -160), cpvzero));
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// add big gear
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cpBody* bigGear = cpSpaceAddBody(space, cpBodyNew(40.0f, cpMomentForCircle(40.0f, 160, 0, cpvzero)));
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cpBodySetPosition(bigGear, cpv(80, -160));
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cpBodySetAngle(bigGear, CP_PI / 2.0f);
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shape = cpSpaceAddShape(space, cpCircleShapeNew(bigGear, 160.0f, cpvzero));
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cpShapeSetFilter(shape, CP_SHAPE_FILTER_NONE);
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cpSpaceAddConstraint(space, cpPivotJointNew2(staticBody, bigGear, cpv(80, -160), cpvzero));
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// connect the plunger to the small gear.
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cpSpaceAddConstraint(space, cpPinJointNew(smallGear, plunger, cpv(80, 0), cpv(0, 0)));
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// connect the gears.
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cpSpaceAddConstraint(space, cpGearJointNew(smallGear, bigGear, -CP_PI / 2.0f, -2.0f));
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// feeder mechanism
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cpFloat bottom = -300.0f;
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cpFloat top = 32.0f;
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cpBody* feeder =
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cpSpaceAddBody(space, cpBodyNew(1.0f, cpMomentForSegment(1.0f, cpv(-224.0f, bottom), cpv(-224.0f, top), 0.0f)));
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cpBodySetPosition(feeder, cpv(-224, (bottom + top) / 2.0f));
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cpFloat len = top - bottom;
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shape = cpSpaceAddShape(space, cpSegmentShapeNew(feeder, cpv(0.0f, len / 2.0f), cpv(0.0f, -len / 2.0f), 20.0f));
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cpShapeSetFilter(shape, GRAB_FILTER);
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cpSpaceAddConstraint(space, cpPivotJointNew2(staticBody, feeder, cpv(-224.0f, bottom), cpv(0.0f, -len / 2.0f)));
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cpVect anchr = cpBodyWorldToLocal(feeder, cpv(-224.0f, -160.0f));
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cpSpaceAddConstraint(space, cpPinJointNew(feeder, smallGear, anchr, cpv(0.0f, 80.0f)));
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// motorize the second gear
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motor = cpSpaceAddConstraint(space, cpSimpleMotorNew(staticBody, bigGear, 3.0f));
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return space;
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}
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static void destroy(cpSpace* space)
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{
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ChipmunkDemoFreeSpaceChildren(space);
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cpSpaceFree(space);
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}
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ChipmunkDemo Pump = {
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"Pump", 1.0 / 120.0, init, update, ChipmunkDemoDefaultDrawImpl, destroy,
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};
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