340 lines
8.9 KiB
Java
340 lines
8.9 KiB
Java
package de.samdev.colorrunner.game.world.entities;
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import com.badlogic.gdx.Gdx;
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import com.badlogic.gdx.math.Rectangle;
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import com.badlogic.gdx.math.Vector2;
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import de.samdev.colorrunner.game.world.CRGameWorld;
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public abstract class MovingEntity extends CRGameEntity {
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protected Vector2 velocity = new Vector2();
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public final static float EPSILON_TOUCH = 4e-5f;
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public final static float EPSILON_MOVE = 2e-5f;
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public final static float EPSILON_COLLIDE = 1e-5f;
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private boolean face_TOP_isTouching = false;
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private boolean face_LEFT_isTouching = false;
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private boolean face_BOTTOM_isTouching = false;
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private boolean face_RIGHT_isTouching = false;
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public MovingEntity(CRGameWorld _owner, float width, float height) {
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this(_owner, 0, 0, width, height);
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}
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public MovingEntity(CRGameWorld _owner, float x, float y, float width, float height) {
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super(_owner, x, y, width, height);
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}
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protected boolean moveByX(float bx) {
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if (bx == 0) return false;
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boolean collided = false;
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Rectangle next = new Rectangle(bounds);
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next.x += bx;
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for (CRGameEntity ent : world.entities) {
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if (ent == this) continue;
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if (overlaps(ent.bounds, next, EPSILON_MOVE) && ent.canCollide(true, this)) {
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if (overlaps(ent.bounds, bounds, EPSILON_COLLIDE)) {
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Gdx.app.log("Collision", "Ignore in bounds collision");
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continue;
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}
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if (bx < 0) { // DOWN
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float correction = (ent.bounds.x + ent.bounds.height) - next.x + EPSILON_MOVE;
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next.x += correction;
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bx += correction;
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if (bx >= -EPSILON_MOVE)
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return false; // collision but no movement
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collided = true;
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} else { // UP
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float correction = ent.bounds.x - (next.x + next.height) - EPSILON_MOVE;
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next.x += correction;
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bx += correction;
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if (bx <= EPSILON_MOVE)
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return false; // collision but no movement
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collided = true;
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}
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}
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}
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bounds.x += bx;
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return collided;
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}
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protected boolean moveByY(float by) {
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if (by == 0) return false;
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boolean collided = false;
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Rectangle next = new Rectangle(bounds);
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next.y += by;
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for (CRGameEntity ent : world.entities) {
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if (ent == this) continue;
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if (overlaps(next, ent.bounds, EPSILON_MOVE) && ent.canCollide(true, this)) {
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if (overlaps(bounds, ent.bounds, EPSILON_COLLIDE)) {
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Gdx.app.log("Collision", "Ignore in bounds collision");
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continue;
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}
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if (by < 0) { // DOWN
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float correction = (ent.bounds.y + ent.bounds.height) - next.y + EPSILON_MOVE;
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next.y += correction;
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by += correction;
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if (by >= -EPSILON_MOVE)
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return true; // collision but no movement
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collided = true;
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} else { // UP
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float correction = ent.bounds.y - (next.y + next.height) - EPSILON_MOVE;
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next.y += correction;
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by += correction;
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if (by <= EPSILON_MOVE)
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return true; // collision but no movement
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collided = true;
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}
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}
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}
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bounds.y += by;
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return collided;
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}
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protected boolean updateHitBox(float width, float height) {
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boolean succ_x = updateHitBoxWidth(width);
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boolean succ_y = updateHitBoxHeight(height);
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return succ_x && succ_y;
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}
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private boolean updateHitBoxWidth(float width) {
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Rectangle next = new Rectangle(bounds);
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float add = width - bounds.width;
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if (isTouching_LEFT() && ! isTouching_RIGHT()) {
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next.width += add;
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next.x -= add;
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} else if (! isTouching_LEFT() && isTouching_RIGHT()) {
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next.width += add;
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} else {
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next.width += add;
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next.x -= add/2;
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}
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if (add < 0) {
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bounds.set(next);
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return true;
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} else {
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for (CRGameEntity ent : world.entities) {
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if (ent == this) continue;
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if (overlaps(ent.bounds, next, EPSILON_MOVE) && ent.canCollide(false, this)) {
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if (overlaps(ent.bounds, bounds, EPSILON_COLLIDE)) {
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Gdx.app.log("Collision", "Ignore in bounds collision on HB Expand [X]");
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continue;
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}
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if (ent.bounds.x > next.x) {
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next.x -= (next.x + next.width) - ent.bounds.x - EPSILON_MOVE;
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for (CRGameEntity ent2 : world.entities) {
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if (ent2 == this) continue;
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if (overlaps(next, ent2.bounds, EPSILON_COLLIDE) && ent2.canCollide(false, this)) {
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Gdx.app.log("Entity Hitbox", "Expand failed X+");
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return false;
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}
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}
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} else if (ent.bounds.x < next.x) {
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next.x += (ent.bounds.x + ent.bounds.width) - next.x + EPSILON_MOVE;
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for (CRGameEntity ent2 : world.entities) {
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if (ent2 == this) continue;
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if (overlaps(next, ent2.bounds, EPSILON_COLLIDE) && ent2.canCollide(false, this)) {
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Gdx.app.log("Entity Hitbox", "Expand failed X-");
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return false;
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}
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}
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}
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}
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}
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bounds.set(next);
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return true;
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}
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}
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private boolean updateHitBoxHeight(float height) {
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Rectangle next = new Rectangle(bounds);
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float add = height - bounds.height;
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if (isTouching_BOTTOM() && ! isTouching_TOP()) {
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next.height += add;
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} else if (! isTouching_BOTTOM() && isTouching_TOP()) {
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next.height += add;
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next.y -= add;
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} else {
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next.height += add;
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next.y -= add/2;
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}
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if (add < 0) {
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bounds.set(next);
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return true;
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} else {
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for (CRGameEntity ent : world.entities) {
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if (ent == this) continue;
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if (overlaps(ent.bounds, next, EPSILON_MOVE) && ent.canCollide(false, this)) {
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if (overlaps(ent.bounds, bounds, EPSILON_COLLIDE)) {
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Gdx.app.log("Collision", "Ignore in bounds collision on HB Expand [Y]");
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continue;
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}
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if (ent.bounds.y > next.y) {
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next.y -= (next.y + next.height) - ent.bounds.y - EPSILON_MOVE;
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for (CRGameEntity ent2 : world.entities) {
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if (ent2 == this) continue;
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if (overlaps(next, ent2.bounds, EPSILON_COLLIDE) && ent2.canCollide(false, this)) {
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Gdx.app.log("Entity Hitbox", "Expand failed Y+");
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return false;
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}
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}
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} else if (ent.bounds.y < next.y) {
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next.y += (ent.bounds.y + ent.bounds.height) - next.y + EPSILON_MOVE;
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for (CRGameEntity ent2 : world.entities) {
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if (ent2 == this) continue;
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if (overlaps(next, ent2.bounds, EPSILON_COLLIDE) && ent2.canCollide(false, this)) {
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Gdx.app.log("Entity Hitbox", "Expand failed Y-");
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return false;
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}
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}
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}
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}
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}
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return true;
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}
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}
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private void updateTouchCollisions() {
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face_TOP_isTouching = false;
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face_LEFT_isTouching = false;
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face_BOTTOM_isTouching = false;
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face_RIGHT_isTouching = false;
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for (CRGameEntity ent : world.entities) {
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if (ent == this) continue;
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if (Math.abs((ent.bounds.y + ent.bounds.height) - bounds.y) < EPSILON_TOUCH && ent.bounds.x < (bounds.x + bounds.width) && (ent.bounds.x + ent.bounds.width) > bounds.x && ent.canCollide(false, this)) {
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face_BOTTOM_isTouching = true;
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}
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if (Math.abs((bounds.y + bounds.height) - ent.bounds.y) < EPSILON_TOUCH && ent.bounds.x < (bounds.x + bounds.width) && (ent.bounds.x + ent.bounds.width) > bounds.x && ent.canCollide(false, this)) {
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face_TOP_isTouching = true;
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}
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if (Math.abs((bounds.x + bounds.width) - ent.bounds.x) < EPSILON_TOUCH && ent.bounds.y < (bounds.y + bounds.height) && (ent.bounds.y + ent.bounds.height) > bounds.y && ent.canCollide(false, this)) {
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face_RIGHT_isTouching = true;
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}
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if (Math.abs((ent.bounds.x + ent.bounds.width) - bounds.x) < EPSILON_TOUCH && ent.bounds.y < (bounds.y + bounds.height) && (ent.bounds.y + ent.bounds.height) > bounds.y && ent.canCollide(false, this)) {
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face_LEFT_isTouching = true;
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}
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}
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}
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public Vector2 getVelocity() {
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return velocity;
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}
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@Override
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public void update(float delta) {
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if (velocity.x != 0) {
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if (moveByX(velocity.x * delta)) {
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velocity.x = 0;
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}
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for (CRGameEntity ent : world.entities) {
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if (ent == this) continue;
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if (overlaps(ent.bounds, bounds, EPSILON_COLLIDE) && ent.canCollide(true, this))
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Gdx.app.error("Collision", "Collision after move X");
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}
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}
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if (velocity.y != 0) {
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if (moveByY(velocity.y * delta)) {
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velocity.y = 0;
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}
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for (CRGameEntity ent : world.entities) {
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if (ent == this) continue;
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if (overlaps(ent.bounds, bounds, EPSILON_COLLIDE) && ent.canCollide(true, this))
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Gdx.app.error("Collision", "Collision after Y");
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}
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}
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updateTouchCollisions();
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}
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private boolean overlaps (Rectangle r1, Rectangle r2, float delta) {
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return
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r1.x - 1*delta < r2.x + r2.width &&
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r1.x + r1.width + 2*delta > r2.x &&
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r1.y - 1*delta < r2.y + r2.height &&
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r1.y + r1.height + 2*delta > r2.y;
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}
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public boolean isTouching_ANY() {
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return face_TOP_isTouching || face_LEFT_isTouching || face_BOTTOM_isTouching || face_RIGHT_isTouching;
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}
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public boolean isTouching_TOP() {
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return face_TOP_isTouching;
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}
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public boolean isTouching_LEFT() {
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return face_LEFT_isTouching;
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}
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public boolean isTouching_BOTTOM() {
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return face_BOTTOM_isTouching;
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}
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public boolean isTouching_RIGHT() {
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return face_RIGHT_isTouching;
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}
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}
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