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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 | 12x 12x 12x 12x 12x 16x 16x 16x 16x 11x 11x 5x 5x 11x 11x 2x 2x 2x 2x 2x 2x 2x 2x 11x 5x 5x 1x 1x 1x 1x 1x 1x 1x 1x 5x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x | import { Command, CommandResultInterface } from "jga-patterns-command";
import { Actor, ComponentName, Entity, MovementSystem, isPositionComponent, World } from "jga-games-engine";
import { Directions, PositionInterface } from "jga-games-maps";
export class MoveCommand extends Command {
protected actor: Actor;
protected direction: Directions;
protected engine: World;
public constructor(actor: Actor, direction: Directions, engine: World) {
super();
this.actor = actor;
this.direction = direction;
this.engine = engine;
}
public execute(): CommandResultInterface {
const result = this.move();
return {
message: `Move => ${this.direction}`,
result: result,
};
}
public undo(): CommandResultInterface | null {
const result = this.moveBack();
return {
message: `Move => ${this.direction}`,
result: result,
};
}
protected move(): PositionInterface | null {
let result: PositionInterface | null = null;
switch (this.direction) {
case Directions.DOWN: {
result = this.moveTo(0, 1);
break;
}
case Directions.LEFT: {
result = this.moveTo(-1, 0);
break;
}
case Directions.RIGHT: {
result = this.moveTo(1, 0);
break;
}
case Directions.UP: {
result = this.moveTo(0, -1);
break;
}
default:
}
return result;
}
protected moveBack(): PositionInterface | null {
let result: PositionInterface | null = null;
switch (this.direction) {
case Directions.DOWN: {
result = this.moveTo(0, -1);
break;
}
case Directions.LEFT: {
result = this.moveTo(1, 0);
break;
}
case Directions.RIGHT: {
result = this.moveTo(-1, 0);
break;
}
case Directions.UP: {
result = this.moveTo(0, 1);
break;
}
default:
}
return result;
}
protected moveTo(dX: number, dY: number): PositionInterface {
const newPosition: PositionInterface = { x: 0, y: 0 };
const actorPosition = this.actor.getComponent(ComponentName.POSITION);
if (isPositionComponent(actorPosition)) {
newPosition.x = Math.max(
0,
Math.min(this.engine.getMap().getWidth() - 1, actorPosition.getPosition().x + dX),
);
newPosition.y = Math.max(
0,
Math.min(this.engine.getMap().getHeight() - 1, actorPosition.getPosition().y + dY),
);
const entities = new Map<string, Entity>();
entities.set(this.actor.getId(), this.actor);
this.engine.run(new MovementSystem(entities, newPosition, this.engine.getEntities()));
}
return newPosition;
}
}
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