gistfile1.txt

import vector;

class PlayerConstants {
  Vector2f walkBack;
	Vector2f walkFront;
	Vector2f dashBack;
	Vector2f dashFront;
	Vector2f airBack;
	Vector2f airFront;
	Vector2f jumpUp;
	Vector2f jumpBack;
	Vector2f jumpFront;
	float    verticalAccel;
	//float    frictionStand;
	//float    frictionCrouch;
}

class CharacterVariables {

}

//updatePhisycs()

enum Facing { Right, Left }


class Rigid {
	this (Vector2f pos) {
	 	position = pos;
	 	vPosition = Vector2f(0, 0);
	}
	void update() {
		position += vPosition;
	}

	Vector2f nextPosition() { return position+vPosition; }
	Vector2f position;
	Vector2f vPosition;
}


class Gravity {
	this() {
		g = Vector2f(0, 9.8f);;
	}

	void addRigid(Rigid r) {
		rigids ~= r;
	}


	void update() {
		foreach (r; rigids)
			r.vPosition += g;
	}

	Rigid[] rigids;
	Vector2f g;
}


class RigidFloor {
	this(float y) { position = Vector2f(0, y); }
	Vector2f position;
}


//class Collision {
	bool intersect(Rigid r, RigidFloor f) {
		if (r.position.y <= f.position.y &&
		    r.nextPosition.y >= f.position.y)
		    return true;
		else
			return false;
	}
//}



unittest {
	import std.stdio;

	auto g = new Gravity();
	auto r = new Rigid(Vector2f(0, 0));
	auto floor = new RigidFloor(400);
	//auto collision = new Collision();

	g.addRigid(r);

	foreach (i; 0 .. 10) {
		g.update();
		if (r.intersect(floor)) {
			r.position.y = floor.position.y;
			r.vPosition.y = 0;
		}
		else {
			r.update();
		}

		writeln(r.position);
	}
}