public PlayerPhysicsCharacter(Entity owner, World world, Vector2 position, float width, float height, float density, OnCollision onCollision, OnSeparation onSeparation)
: base(owner, world, position, width, height, density, onCollision, onSeparation)
{
// Load resources
ConfigFile configFile = PhysicsSystem.GetPhysicsConfigFile();
runSpeed = configFile.SettingGroups[physicsSettings].Settings["runSpeed"].GetValueAsFloat();
runAirControlSpeed = configFile.SettingGroups[physicsSettings].Settings["airControlSpeed"].GetValueAsFloat();
jumpImpulse = configFile.SettingGroups[physicsSettings].Settings["jumpImpulse"].GetValueAsFloat();
wallJumpImpulse = configFile.SettingGroups[physicsSettings].Settings["wallJumpImpulse"].GetValueAsFloat();
airControlAbility = configFile.SettingGroups[physicsSettings].Settings["airControlAbility"].GetValueAsFloat();
terminalVelocity = configFile.SettingGroups[physicsSettings].Settings["terminalVelocity"].GetValueAsFloat();
slideTerminalVelocity = configFile.SettingGroups[physicsSettings].Settings["slideTerminalVelocity"].GetValueAsFloat();
dashMultiplier = configFile.SettingGroups[physicsSettings].Settings["dashMultiplier"].GetValueAsFloat();
wallSlideEnabled = false;
onGroundTimer = new Timer();
onLeftWallTimer = new Timer();
onRightWallTimer = new Timer();
enableOnGroundDelay = true;
enableOnLeftWallDelay = true;
enableOnRightWallDelay = true;
moveSpeed = runSpeed;
airControlSpeed = runAirControlSpeed;
}
protected override void SetUpPhysics(Entity owner, World world, Vector2 position, float width, float height, float density)
{
// Load resources
ConfigFile configFile = PhysicsSystem.GetPhysicsConfigFile();
brakeSpeed = configFile.SettingGroups[physicsSettings].Settings["brakeSpeed"].GetValueAsFloat();
defaultBodyFriction = configFile.SettingGroups[physicsSettings].Settings["defaultBodyFriction"].GetValueAsFloat();
defaultBodyRestitution = configFile.SettingGroups[physicsSettings].Settings["defaultBodyRestitution"].GetValueAsFloat();
defaultWheelFriction = configFile.SettingGroups[physicsSettings].Settings["defaultWheelFriction"].GetValueAsFloat();
defaultWheelRestitution = configFile.SettingGroups[physicsSettings].Settings["defaultWheelRestitution"].GetValueAsFloat();
//Create a fixture with a body almost the size of the entire object
//but with the bottom part cut off.
float upperBodyHeight = height - (width / 2);
body = BodyFactory.CreateRectangle(world, (float)ConvertUnits.ToSimUnits(width), (float)ConvertUnits.ToSimUnits(upperBodyHeight), density / 2);
body.BodyType = BodyType.Dynamic;
// tested a rounded rectangle.. didn't work so well. Should I revisit? ***
//body = BodyFactory.CreateRoundedRectangle(world, ConvertUnits.ToSimUnits(width), ConvertUnits.ToSimUnits(upperBodyHeight), ConvertUnits.ToSimUnits(0.5f), ConvertUnits.ToSimUnits(0.5f), 2, density / 2, ConvertUnits.ToSimUnits(position));
//body.BodyType = BodyType.Dynamic;
// player needs low restitution so he won't bounce on the ground
// and low friction to avoid the "edge catching" problem
body.Restitution = defaultBodyRestitution;
body.Friction = defaultBodyFriction;
fixture = body.FixtureList[0];
//also shift it up a tiny bit to keep the new object's center correct
body.Position = ConvertUnits.ToSimUnits(position - (Vector2.UnitY * (width / 4)));
centerOffset = position.Y - (float)ConvertUnits.ToDisplayUnits(body.Position.Y); //remember the offset from the center for drawing
//Now let's make sure our upperbody is always facing up.
fixedAngleJoint = JointFactory.CreateFixedAngleJoint(world, body);
// Create our bottom part of the player which interacts with the terrain
wheelBody = BodyFactory.CreateCircle(world, (float)ConvertUnits.ToSimUnits(width / 2), density / 2);
//And position its center at the bottom of the upper body
wheelBody.Position = body.Position + ConvertUnits.ToSimUnits(Vector2.UnitY * (upperBodyHeight / 2));
wheelBody.BodyType = BodyType.Dynamic;
wheelBody.Restitution = defaultWheelRestitution;
//Set the friction higher for fast stopping/starting
//or set it lower to make the character slip.
wheelBody.Friction = defaultWheelFriction;
//These two bodies together are width wide and height high :)
//So lets connect them together
motor = JointFactory.CreateRevoluteJoint(world, body, wheelBody, Vector2.Zero);
motor.MotorEnabled = true;
motor.MaxMotorTorque = defaultMaxMotorTorque;
motor.MotorSpeed = 0;
//Make sure the two fixtures don't collide with each other
wheelBody.IgnoreCollisionWith(body);
body.IgnoreCollisionWith(wheelBody);
// make sure the bodies point to the owners
wheelBody.UserData = owner;
body.UserData = owner;
// so that we don't slip off the edge
brakeJoint = JointFactory.CreateFixedAngleJoint(world, wheelBody);
// Set contact handlers
body.OnCollision += new OnCollisionEventHandler(onCollisionWithBody);
body.OnSeparation += new OnSeparationEventHandler(onSeparationWithBody);
wheelBody.OnCollision += new OnCollisionEventHandler(onCollisionWithBottom);
wheelBody.OnSeparation += new OnSeparationEventHandler(onSeparationWithBottom);
}