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/* Copyright (c) 2013 Scott Lembcke and Howling Moon Software
*
* 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.
*/
#import <XCTest/XCTest.h>
#import "ObjectiveChipmunk/ObjectiveChipmunk.h"
@interface UpdateTestBody : ChipmunkBody
@property(nonatomic, assign) BOOL velocityUpdated;
@property(nonatomic, assign) BOOL positionUpdated;
@end
@implementation UpdateTestBody
-(void)updateVelocity:(cpFloat)dt gravity:(cpVect)gravity damping:(cpFloat)damping
{
self.velocityUpdated = TRUE;
}
-(void)updatePosition:(cpFloat)dt
{
self.positionUpdated = TRUE;
}
@end
@interface BodyTest : XCTestCase {}
@end
@implementation BodyTest
#define TestAccessors(o, p, v) o.p = v; XCTAssertEqual(o.p, v, @"");
#define TestAccessorsV(o, p, v) o.p = v; XCTAssertTrue(cpveql(o.p, v), @"");
-(void)testProperties {
ChipmunkBody *body = [ChipmunkBody bodyWithMass:123 andMoment:123];
XCTAssertEqual(body.mass, (cpFloat)123, @"");
XCTAssertEqual(body.moment, (cpFloat)123, @"");
XCTAssertNotEqual(body.body, NULL, @"");
XCTAssertNil(body.userData, @"");
TestAccessors(body, userData, @"object");
TestAccessors(body, mass, (cpFloat)5);
TestAccessors(body, moment, (cpFloat)5);
TestAccessorsV(body, position, cpv(5,6));
TestAccessorsV(body, velocity, cpv(5,6));
TestAccessorsV(body, force, cpv(5,6));
TestAccessors(body, angle, (cpFloat)5);
TestAccessors(body, angularVelocity, (cpFloat)5);
TestAccessors(body, torque, (cpFloat)5);
body.angle = 0;
body.angle = CP_PI;
body.angle = CP_PI/2.0f;
// TODO transform tests
XCTAssertFalse(body.isSleeping, @"");
XCTAssertEqual(body.type, CP_BODY_TYPE_DYNAMIC, @"");
}
-(void)testBasic {
ChipmunkBody *body = [ChipmunkBody bodyWithMass:1 andMoment:1];
[body applyForce:cpv(0,1) atWorldPoint:cpv(1,0)];
XCTAssertTrue(body.force.y > 0, @"");
XCTAssertTrue(body.force.x == 0, @"");
XCTAssertTrue(body.torque > 0, @"");
body.force = cpvzero;
body.torque = 0.0f;
XCTAssertTrue(cpveql(body.force, cpvzero), @"");
XCTAssertEqual(body.torque, (cpFloat)0, @"");
[body applyImpulse:cpv(0,1) atWorldPoint:cpv(1,0)];
XCTAssertTrue(body.velocity.y > 0, @"");
XCTAssertTrue(body.velocity.x == 0, @"");
XCTAssertTrue(body.angularVelocity > 0, @"");
}
-(void)testMisc {
ChipmunkBody *staticBody = [ChipmunkBody staticBody];
XCTAssertFalse(staticBody.isSleeping, @"");
XCTAssertEqual(staticBody.type, CP_BODY_TYPE_STATIC, @"");
ChipmunkSpace *space = [[ChipmunkSpace alloc] init];
space.sleepTimeThreshold = 1.0;
ChipmunkBody *body = [ChipmunkBody bodyWithMass:1 andMoment:1];
[space add:body];
XCTAssertFalse(body.isSleeping, @"");
XCTAssertEqual(body.type, CP_BODY_TYPE_DYNAMIC, @"");
[body sleep];
XCTAssertTrue(body.isSleeping, @"");
[space release];
}
-(void)testUpdate {
ChipmunkSpace *space = [[ChipmunkSpace alloc] init];
UpdateTestBody *body = [space add:[UpdateTestBody bodyWithMass:1.0 andMoment:1.0]];
XCTAssertTrue(body.body->velocity_func != cpBodyUpdateVelocity, @"Did not set velocity integration callback.");
XCTAssertTrue(body.body->position_func != cpBodyUpdatePosition, @"Did not set position integration callback.");
[space step:1.0];
XCTAssertTrue(body.velocityUpdated, @"Did not call velocity integration callback.");
XCTAssertTrue(body.positionUpdated, @"Did not call position integration callback.");
[space release];
}
-(void)testSpace {
ChipmunkSpace *space = [[ChipmunkSpace alloc] init];
ChipmunkBody *body = [ChipmunkBody bodyWithMass:1.0 andMoment:1.0];
XCTAssertNil(body.space, @"body.space should be nil.");
[space add:body];
XCTAssertEqual(body.space, space, @"body.space should be space.");
[space release];
}
-(void)testTimeSteping {
ChipmunkSpace *space = [[ChipmunkSpace alloc] init];
space.gravity = cpv(0, -1);
ChipmunkBody *dynamicBody = [space add:[ChipmunkBody bodyWithMass:1.0 andMoment:1.0]];
ChipmunkBody *staticBody = [space add:[ChipmunkBody staticBody]];
ChipmunkBody *kinematicBody = [space add:[ChipmunkBody kinematicBody]];
kinematicBody.velocity = cpv(1, 0);
[space step:1.0];
// Should have accelerated but not moved.
XCTAssert(cpveql(dynamicBody.position, cpvzero), @"");
XCTAssert(cpveql(dynamicBody.velocity, cpv(0, -1)), @"");
// Should not have moved nor accelerated.
XCTAssert(cpveql(staticBody.position, cpvzero), @"");
XCTAssert(cpveql(staticBody.velocity, cpvzero), @"");
// Should have moved right but not accelerated downward.
XCTAssert(cpveql(kinematicBody.position, cpv(1, 0)), @"");
XCTAssert(cpveql(kinematicBody.velocity, cpv(1, 0)), @"");
[space step:1.0];
// Should have moved and accelerated more.
XCTAssert(cpveql(dynamicBody.position, cpv(0, -1)), @"");
XCTAssert(cpveql(dynamicBody.velocity, cpv(0, -2)), @"");
// Still should not have moved nor accelerated.
XCTAssert(cpveql(staticBody.position, cpvzero), @"");
XCTAssert(cpveql(staticBody.velocity, cpvzero), @"");
// Should have moved right more but still not accelerated downward.
XCTAssert(cpveql(kinematicBody.position, cpv(2, 0)), @"");
XCTAssert(cpveql(kinematicBody.velocity, cpv(1, 0)), @"");
[space release];
}
@end
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