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/*
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* FXGL - JavaFX Game Library. The MIT License (MIT).
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* Copyright (c) AlmasB (almaslvl@gmail.com).
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* See LICENSE for details.
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*/
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package intermediate.ai.pathfinding;
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import com.almasb.fxgl.app.GameApplication;
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import com.almasb.fxgl.app.GameSettings;
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import com.almasb.fxgl.entity.Entity;
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import com.almasb.fxgl.pathfinding.CellMoveComponent;
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import com.almasb.fxgl.pathfinding.CellState;
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import com.almasb.fxgl.pathfinding.astar.AStarGrid;
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import com.almasb.fxgl.pathfinding.astar.AStarMoveComponent;
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import javafx.scene.input.MouseButton;
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import javafx.scene.paint.Color;
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import javafx.scene.shape.Rectangle;
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import javafx.scene.shape.StrokeType;
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import static com.almasb.fxgl.dsl.FXGL.debug;
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import static com.almasb.fxgl.dsl.FXGL.entityBuilder;
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/**
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* Demo that uses A* search to find a path between 2 cells in a grid.
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* Right click to place a wall, left click to move.
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*
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* @author Almas Baimagambetov (AlmasB) (almaslvl@gmail.com)
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*/
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public class AStarPathfindingSample extends GameApplication {
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private Entity agent;
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@Override
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protected void initSettings(GameSettings settings) {
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settings.setWidth(1280);
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settings.setHeight(720);
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settings.setDeveloperMenuEnabled(true);
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}
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@Override
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protected void initGame() {
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var grid = new AStarGrid(1280 / 40, 720 / 40);
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agent = entityBuilder()
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.viewWithBBox(new Rectangle(40, 40, Color.BLUE))
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.with(new CellMoveComponent(40, 40, 150))
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.with(new AStarMoveComponent(grid))
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.zIndex(1)
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.anchorFromCenter()
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.buildAndAttach();
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agent.getComponent(CellMoveComponent.class).atDestinationProperty().addListener((o, old, isAtDestination) -> {
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if (isAtDestination) {
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debug("CellMoveComponent: reached destination");
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}
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});
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agent.getComponent(AStarMoveComponent.class).atDestinationProperty().addListener((o, old, isAtDestination) -> {
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if (isAtDestination) {
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debug("AStarMoveComponent: reached destination");
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}
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});
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for (int y = 0; y < 720 / 40; y++) {
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for (int x = 0; x < 1280 / 40; x++) {
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final var finalX = x;
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final var finalY = y;
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var view = new Rectangle(40, 40, Color.WHITE);
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view.setStroke(Color.color(0, 0, 0, 0.25));
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view.setStrokeType(StrokeType.INSIDE);
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var e = entityBuilder()
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.at(x * 40, y * 40)
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.view(view)
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.buildAndAttach();
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e.getViewComponent().addOnClickHandler(event -> {
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if (event.getButton() == MouseButton.PRIMARY) {
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agent.getComponent(AStarMoveComponent.class).moveToCell(finalX, finalY);
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} else if (event.getButton() == MouseButton.SECONDARY) {
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grid.get(finalX, finalY).setState(CellState.NOT_WALKABLE);
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view.setFill(Color.RED);
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}
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});
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}
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}
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}
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public static void main(String[] args) {
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launch(args);
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}
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}
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