Make physics more fun
This commit is contained in:
schmelczerandras
parent
155e360c8e
commit
89fafeafd3
41 changed files with 511 additions and 334 deletions
|
|
@ -8,20 +8,70 @@ import {
|
|||
clamp,
|
||||
last,
|
||||
GameObject,
|
||||
Circle,
|
||||
} from 'shared';
|
||||
import { DynamicPhysical } from '../physics/conatiners/dynamic-physical';
|
||||
import { DynamicPhysical } from '../physics/physicals/dynamic-physical';
|
||||
import { CirclePhysical } from './circle-physical';
|
||||
import { PhysicalContainer } from '../physics/containers/physical-container';
|
||||
import { Spring } from './spring';
|
||||
import { BoundingBoxBase } from '../physics/bounding-boxes/bounding-box-base';
|
||||
import { ProjectilePhysical } from './projectile-physical';
|
||||
import { interpolateAngles } from '../helper/interpolate-angles';
|
||||
import { forceAtPosition } from '../physics/functions/force-at-position';
|
||||
import { getBoundingBoxOfCircle } from '../physics/functions/get-bounding-box-of-circle';
|
||||
import { PlanetPhysical } from './planet-physical';
|
||||
import { ReactsToCollision } from '../physics/physicals/reacts-to-collision';
|
||||
|
||||
@serializesTo(CharacterBase)
|
||||
export class CharacterPhysical extends CharacterBase implements DynamicPhysical {
|
||||
export class CharacterPhysical
|
||||
extends CharacterBase
|
||||
implements DynamicPhysical, ReactsToCollision {
|
||||
public readonly canCollide = true;
|
||||
public readonly canMove = true;
|
||||
|
||||
private static readonly headRadius = 50;
|
||||
private static readonly feetRadius = 20;
|
||||
// offsets are meassured from (0, 0)
|
||||
private static readonly desiredHeadOffset = vec2.fromValues(0, 65);
|
||||
private static readonly desiredLeftFootOffset = vec2.fromValues(-20, 0);
|
||||
private static readonly desiredRightFootOffset = vec2.fromValues(20, 0);
|
||||
private static readonly centerOfMass = vec2.scale(
|
||||
vec2.create(),
|
||||
vec2.add(
|
||||
vec2.create(),
|
||||
vec2.add(
|
||||
vec2.create(),
|
||||
CharacterPhysical.desiredHeadOffset,
|
||||
CharacterPhysical.desiredLeftFootOffset,
|
||||
),
|
||||
CharacterPhysical.desiredRightFootOffset,
|
||||
),
|
||||
1 / 3,
|
||||
);
|
||||
|
||||
private static readonly headOffset = vec2.subtract(
|
||||
vec2.create(),
|
||||
CharacterPhysical.desiredHeadOffset,
|
||||
CharacterPhysical.centerOfMass,
|
||||
);
|
||||
private static readonly leftFootOffset = vec2.subtract(
|
||||
vec2.create(),
|
||||
CharacterPhysical.desiredLeftFootOffset,
|
||||
CharacterPhysical.centerOfMass,
|
||||
);
|
||||
private static readonly rightFootOffset = vec2.subtract(
|
||||
vec2.create(),
|
||||
CharacterPhysical.desiredRightFootOffset,
|
||||
CharacterPhysical.centerOfMass,
|
||||
);
|
||||
|
||||
public static readonly boundRadius =
|
||||
(CharacterPhysical.headRadius + CharacterPhysical.feetRadius * 2) * 2;
|
||||
|
||||
private isDestroyed = false;
|
||||
private jumpEnergyLeft = settings.defaultJumpEnergy;
|
||||
private direction = 0;
|
||||
private currentPlanet?: PlanetPhysical;
|
||||
private lastMovementWasRelative = false;
|
||||
private secondsSinceOnSurface = 1000;
|
||||
|
||||
public head: CirclePhysical;
|
||||
public leftFoot: CirclePhysical;
|
||||
|
|
@ -29,37 +79,31 @@ export class CharacterPhysical extends CharacterBase implements DynamicPhysical
|
|||
public bound: CirclePhysical;
|
||||
|
||||
private movementActions: Array<MoveActionCommand> = [];
|
||||
private lastMovementAction: MoveActionCommand = new MoveActionCommand(vec2.create());
|
||||
|
||||
public handleMovementAction(c: MoveActionCommand) {
|
||||
this.movementActions.push(c);
|
||||
}
|
||||
|
||||
private static readonly headOffset = vec2.fromValues(0, 40);
|
||||
private static readonly headRadius = 50;
|
||||
private static readonly feetRadius = 20;
|
||||
private static readonly leftFootOffset = vec2.fromValues(-20, -35);
|
||||
private static readonly rightFootOffset = vec2.fromValues(20, -35);
|
||||
private lastMovementAction: MoveActionCommand = new MoveActionCommand(
|
||||
vec2.create(),
|
||||
false,
|
||||
);
|
||||
|
||||
constructor(
|
||||
public readonly colorIndex: number,
|
||||
private readonly container: PhysicalContainer,
|
||||
startPosition: vec2,
|
||||
) {
|
||||
super(id(), colorIndex);
|
||||
this.head = new CirclePhysical(
|
||||
vec2.clone(CharacterPhysical.headOffset),
|
||||
vec2.add(vec2.create(), startPosition, CharacterPhysical.headOffset),
|
||||
CharacterPhysical.headRadius,
|
||||
this,
|
||||
container,
|
||||
);
|
||||
this.leftFoot = new CirclePhysical(
|
||||
vec2.clone(CharacterPhysical.leftFootOffset),
|
||||
vec2.add(vec2.create(), startPosition, CharacterPhysical.leftFootOffset),
|
||||
CharacterPhysical.feetRadius,
|
||||
this,
|
||||
container,
|
||||
);
|
||||
this.rightFoot = new CirclePhysical(
|
||||
vec2.clone(CharacterPhysical.rightFootOffset),
|
||||
vec2.add(vec2.create(), startPosition, CharacterPhysical.rightFootOffset),
|
||||
CharacterPhysical.feetRadius,
|
||||
this,
|
||||
container,
|
||||
|
|
@ -70,12 +114,16 @@ export class CharacterPhysical extends CharacterBase implements DynamicPhysical
|
|||
|
||||
this.bound = new CirclePhysical(
|
||||
vec2.create(),
|
||||
(CharacterPhysical.headRadius + CharacterPhysical.feetRadius * 2) * 2,
|
||||
CharacterPhysical.boundRadius,
|
||||
this,
|
||||
container,
|
||||
);
|
||||
}
|
||||
|
||||
public handleMovementAction(c: MoveActionCommand) {
|
||||
this.movementActions.push(c);
|
||||
}
|
||||
|
||||
public onCollision(other: GameObject) {
|
||||
if (other instanceof ProjectilePhysical) {
|
||||
other.destroy();
|
||||
|
|
@ -110,7 +158,7 @@ export class CharacterPhysical extends CharacterBase implements DynamicPhysical
|
|||
);
|
||||
}
|
||||
|
||||
private sumAndResetMovementActions(): vec2 {
|
||||
private averageAndResetMovementActions(): vec2 {
|
||||
let direction: vec2;
|
||||
if (this.movementActions.length === 0) {
|
||||
direction = vec2.clone(this.lastMovementAction.direction);
|
||||
|
|
@ -122,6 +170,9 @@ export class CharacterPhysical extends CharacterBase implements DynamicPhysical
|
|||
|
||||
vec2.scale(direction, direction, 1 / this.movementActions.length);
|
||||
|
||||
this.lastMovementWasRelative =
|
||||
this.movementActions.find((a) => a.isCharacterRelative) !== undefined;
|
||||
|
||||
this.lastMovementAction = last(this.movementActions)!;
|
||||
this.movementActions = [];
|
||||
}
|
||||
|
|
@ -129,82 +180,104 @@ export class CharacterPhysical extends CharacterBase implements DynamicPhysical
|
|||
return direction;
|
||||
}
|
||||
|
||||
public step(deltaTimeInMiliseconds: number) {
|
||||
const deltaTime = deltaTimeInMiliseconds / 1000;
|
||||
const direction = this.sumAndResetMovementActions();
|
||||
const feetAirborne = this.leftFoot.isAirborne && this.rightFoot.isAirborne;
|
||||
const isAirborne = feetAirborne && this.head.isAirborne;
|
||||
this.jumpEnergyLeft += isAirborne ? -deltaTime : deltaTime;
|
||||
this.jumpEnergyLeft = clamp(this.jumpEnergyLeft, 0, settings.defaultJumpEnergy);
|
||||
public step(deltaTime: number) {
|
||||
if ((this.secondsSinceOnSurface += deltaTime) > 1) {
|
||||
this.currentPlanet = undefined;
|
||||
}
|
||||
|
||||
const xMax = deltaTime * settings.maxAccelerationX;
|
||||
const yMax = this.jumpEnergyLeft > 0 ? settings.maxAccelerationY : 0;
|
||||
const movementForce = vec2.multiply(
|
||||
direction,
|
||||
direction,
|
||||
vec2.fromValues(xMax, yMax),
|
||||
const intersectingWithForcefield = this.container.findIntersecting(
|
||||
getBoundingBoxOfCircle(
|
||||
new Circle(
|
||||
this.center,
|
||||
CharacterPhysical.boundRadius + settings.maxGravityDistance,
|
||||
),
|
||||
),
|
||||
);
|
||||
const actualGravity = forceAtPosition(this.center, intersectingWithForcefield);
|
||||
|
||||
Spring.step(
|
||||
this.leftFoot,
|
||||
this.rightFoot,
|
||||
vec2.distance(CharacterPhysical.leftFootOffset, CharacterPhysical.rightFootOffset),
|
||||
300,
|
||||
deltaTime,
|
||||
);
|
||||
const direction = this.averageAndResetMovementActions();
|
||||
const movementForce = vec2.scale(direction, direction, settings.maxAcceleration);
|
||||
|
||||
if (!this.currentPlanet) {
|
||||
this.applyForce(this.leftFoot, actualGravity, deltaTime);
|
||||
this.applyForce(this.rightFoot, actualGravity, deltaTime);
|
||||
|
||||
const sumForce = vec2.subtract(vec2.create(), actualGravity, movementForce);
|
||||
|
||||
this.setDirection(
|
||||
vec2.length(sumForce) === 0 ? vec2.fromValues(0, -1) : sumForce,
|
||||
deltaTime,
|
||||
);
|
||||
} else {
|
||||
const leftFootGravity = this.currentPlanet!.getForce(this.leftFoot.center);
|
||||
const rightFootGravity = this.currentPlanet!.getForce(this.rightFoot.center);
|
||||
if (movementForce.y > settings.maxAcceleration / 4) {
|
||||
vec2.scale(leftFootGravity, leftFootGravity, 0.35);
|
||||
vec2.scale(rightFootGravity, rightFootGravity, 0.35);
|
||||
}
|
||||
this.applyForce(this.leftFoot, leftFootGravity, deltaTime);
|
||||
this.applyForce(this.rightFoot, rightFootGravity, deltaTime);
|
||||
|
||||
if (this.lastMovementWasRelative) {
|
||||
vec2.rotate(movementForce, movementForce, vec2.create(), this.direction);
|
||||
}
|
||||
|
||||
const headGravity = this.currentPlanet!.getForce(this.head.center);
|
||||
|
||||
if (vec2.length(headGravity) < vec2.length(actualGravity) / 2) {
|
||||
this.currentPlanet = undefined;
|
||||
}
|
||||
this.setDirection(headGravity, deltaTime);
|
||||
}
|
||||
|
||||
this.applyForce(this.head, movementForce, deltaTime);
|
||||
this.applyForce(this.leftFoot, movementForce, deltaTime);
|
||||
this.applyForce(this.rightFoot, movementForce, deltaTime);
|
||||
|
||||
if (feetAirborne) {
|
||||
this.applyForce(this.head, settings.gravitationalForce, deltaTime);
|
||||
this.stepBodyPart(this.leftFoot, deltaTime);
|
||||
this.stepBodyPart(this.rightFoot, deltaTime);
|
||||
this.keepPosture();
|
||||
}
|
||||
|
||||
private setDirection(direction: vec2, deltaTime: number) {
|
||||
this.direction = interpolateAngles(
|
||||
this.direction,
|
||||
Math.atan2(direction.y, direction.x) + Math.PI / 2,
|
||||
Math.pow(4, deltaTime),
|
||||
);
|
||||
}
|
||||
|
||||
private keepPosture() {
|
||||
const bodyCenter = vec2.add(vec2.create(), this.head.center, this.leftFoot.center);
|
||||
vec2.add(bodyCenter, bodyCenter, this.rightFoot.center);
|
||||
vec2.scale(bodyCenter, bodyCenter, 1 / 3);
|
||||
this.springMove(this.leftFoot, bodyCenter, CharacterPhysical.leftFootOffset);
|
||||
this.springMove(this.rightFoot, bodyCenter, CharacterPhysical.rightFootOffset);
|
||||
this.springMove(this.head, bodyCenter, CharacterPhysical.headOffset);
|
||||
}
|
||||
|
||||
private springMove(object: CirclePhysical, center: vec2, offset: vec2) {
|
||||
// todo: make time-independent
|
||||
const springConstant = 0.35;
|
||||
|
||||
const desiredPosition = vec2.add(vec2.create(), center, offset);
|
||||
vec2.rotate(desiredPosition, desiredPosition, center, this.direction);
|
||||
const positionDelta = vec2.subtract(desiredPosition, desiredPosition, object.center);
|
||||
vec2.scale(positionDelta, positionDelta, springConstant);
|
||||
const hitObject = object.tryMove(positionDelta);
|
||||
|
||||
if (hitObject instanceof PlanetPhysical) {
|
||||
this.secondsSinceOnSurface = 0;
|
||||
this.currentPlanet = hitObject;
|
||||
}
|
||||
this.applyForce(this.leftFoot, settings.gravitationalForce, deltaTime);
|
||||
this.applyForce(this.rightFoot, settings.gravitationalForce, deltaTime);
|
||||
}
|
||||
|
||||
this.head.step2(deltaTime);
|
||||
this.leftFoot.step2(deltaTime);
|
||||
this.rightFoot.step2(deltaTime);
|
||||
private stepBodyPart(part: CirclePhysical, deltaTime: number) {
|
||||
const hitObject = part.step2(deltaTime);
|
||||
|
||||
let sumBody = vec2.add(vec2.create(), this.head.center, this.leftFoot.center);
|
||||
vec2.add(sumBody, sumBody, this.rightFoot.center);
|
||||
vec2.scale(sumBody, sumBody, 1 / 3);
|
||||
|
||||
const headPosition = vec2.add(vec2.create(), sumBody, CharacterPhysical.headOffset);
|
||||
const headDelta = vec2.subtract(headPosition, headPosition, this.head.center);
|
||||
vec2.scale(headDelta, headDelta, 0.5);
|
||||
this.head.tryMove(headDelta);
|
||||
|
||||
sumBody = vec2.add(vec2.create(), this.head.center, this.leftFoot.center);
|
||||
vec2.add(sumBody, sumBody, this.rightFoot.center);
|
||||
vec2.scale(sumBody, sumBody, 1 / 3);
|
||||
|
||||
const leftFootPosition = vec2.add(
|
||||
vec2.create(),
|
||||
sumBody,
|
||||
CharacterPhysical.leftFootOffset,
|
||||
);
|
||||
const leftFootDelta = vec2.subtract(
|
||||
leftFootPosition,
|
||||
leftFootPosition,
|
||||
this.leftFoot.center,
|
||||
);
|
||||
vec2.scale(leftFootDelta, leftFootDelta, 1);
|
||||
this.leftFoot.tryMove(leftFootDelta);
|
||||
|
||||
const rightFootPosition = vec2.add(
|
||||
vec2.create(),
|
||||
sumBody,
|
||||
CharacterPhysical.rightFootOffset,
|
||||
);
|
||||
const rightFootDelta = vec2.subtract(
|
||||
rightFootPosition,
|
||||
rightFootPosition,
|
||||
this.rightFoot.center,
|
||||
);
|
||||
vec2.scale(rightFootDelta, rightFootDelta, 1);
|
||||
this.rightFoot.tryMove(rightFootDelta);
|
||||
if (hitObject instanceof PlanetPhysical) {
|
||||
this.secondsSinceOnSurface = 0;
|
||||
this.currentPlanet = hitObject;
|
||||
}
|
||||
}
|
||||
|
||||
public applyForce(circle: CirclePhysical, force: vec2, timeInSeconds: number) {
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue