Motschen/TetrisClone
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feat: check for collisions with other tetrominos

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This commit is contained in:
Martin Prokoph
2025-06-28 19:32:26 +02:00
parent 41af446f94
commit 7aa1b0e73c
6 changed files with 39 additions and 17 deletions
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35
src/main/java/eu/midnightdust/yaytris/game/Tetromino.java
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@@ -9,6 +9,7 @@ public class Tetromino {
private final TetrominoShape shape;
private int[][] collision;
private Vec2i centerPos;
private int fallLength = 0;
public Tetromino(TetrominoShape shape) {
this.shape = shape;
@@ -18,7 +19,8 @@ public class Tetromino {
public void fall(int length) {
Vec2i newPos = centerPos.offset(Vec2i.of(0, length));
if (Tetris.space != null && newPos.getY()+this.collision.length > Tetris.space.getMapHeight()) {
if (collidesVertically(newPos)) {
if (fallLength < 1) System.out.println("Game over!");
int[] affectedLines = new int[this.collision.length];
int line = centerPos.getY();
for (int i = 0; i < this.collision.length; i++) {
@@ -28,17 +30,46 @@ public class Tetromino {
Tetris.space.onLinesChanged(this, affectedLines);
Tetris.space.spawnTetromino();
}
fallLength += 1;
centerPos = newPos;
}
private boolean collidesVertically(Vec2i newPos) {
if (Tetris.space == null) return false;
boolean collides = newPos.getY() + this.collision.length > Tetris.space.getMapHeight(); // Bottom check
if (!collides) {
for (int i = 0; i < collision[0].length; i++) {
int maxCollisionY = collision.length - 1;
while (collision[maxCollisionY][i] == 0) maxCollisionY--;
if (newPos.getY()+maxCollisionY >= Tetris.space.getGameMap().length) continue;
collides |= Tetris.space.getGameMap()[newPos.getY() + maxCollisionY][newPos.getX() + i] != null; // Check for other tetrominos
}
}
return collides;
}
public void move(int xOffset) {
Vec2i newPos = centerPos.offset(Vec2i.of(xOffset, 0));
if (Tetris.space == null || newPos.getX() < 0 || newPos.getX() + collision[0].length > Tetris.space.getGameMap()[0].length) {
if (collidesHorizontally(newPos, xOffset)) {
return;
}
centerPos = newPos;
}
private boolean collidesHorizontally(Vec2i newPos, int xOffset) {
if (Tetris.space == null) return false;
boolean collides = newPos.getX() < 0 || newPos.getX() + collision[0].length > Tetris.space.getGameMap()[0].length;
if (!collides) {
for (int i = 0; i < collision.length; i++) {
int maxCollisionX = xOffset > 0 ? collision[i].length - 1 : 0;
while (collision[i][maxCollisionX] == 0) maxCollisionX += xOffset > 0 ? -1 : 1;
if (newPos.getY()+maxCollisionX >= Tetris.space.getGameMap().length) continue;
collides |= Tetris.space.getGameMap()[newPos.getY() + i][newPos.getX() + maxCollisionX] != null; // Check for other tetrominos
}
}
return collides;
}
public void rotate() {
int M = collision.length;
int N = collision[0].length;