init

src/Unit.cpp

@@ -0,0 +1,59 @@
+/**
+ * Copyright (C) David Wolfe, 1999.  All rights reserved.
+ * Ported to Qt and adapted for TDDD86, 2015.
+ */
+
+#include "Unit.h"
+#include "constants.h"
+#include "utilities.h"
+#include <cstdlib>
+#include <cmath>
+
+Unit::Unit() {
+    teleport();
+}
+
+
+Unit::Unit(const Point& p) {
+    x = p.x;
+    y = p.y;
+}
+
+Point Unit::asPoint() const {
+    return Point{x, y};
+}
+
+bool Unit::at(const Unit& u) const {
+    return (x == u.x && y == u.y);
+}
+
+
+
+void Unit::moveTowards(const Point& p) {
+    if (x > p.x) x--;
+    if (x < p.x) x++;
+    if (y > p.y) y--;
+    if (y < p.y) y++;
+    checkBounds();
+}
+
+void Unit::teleport() {
+    x = rand_int (MIN_X, MAX_X);
+    y = rand_int (MIN_Y, MAX_Y);
+}
+
+double Unit::distanceTo(const Unit& u) const {
+    double dx = u.x - x;
+    double dy = u.y - y;
+    return sqrt(dx * dx + dy * dy);
+}
+
+/*
+ * Put this unit inside playing field if outside
+ */
+void Unit::checkBounds() {
+    if (x < MIN_X) x = MIN_X;
+    if (x > MAX_X) x = MAX_X;
+    if (y < MIN_Y) y = MIN_Y;
+    if (y > MAX_Y) y = MAX_Y;
+}