initial commit

1 files changed, 47 insertions, 0 deletions

diff --git a/src/engine/vector.js b/src/engine/vector.js
new file mode 100644
index 0000000..452e47b
--- /dev/null
+++ b/src/engine/vector.js
@@ -0,0 +1,47 @@
+export class Vector {
+    constructor(x=0, y=0) {
+        this.x = x
+        this.y = y
+    }
+
+    add(newVector) {
+        this.x += newVector.x
+        this.y += newVector.y
+        return this
+    }
+
+    normalize() {
+        if (this.x != 0 && 0 != this.y) {
+            let hyp = Math.abs(this.x)
+            let cSquared = Math.pow(hyp, 2) / 2
+            let c = Math.sqrt(cSquared, 2)
+
+            this.x = this.x / Math.abs(this.x) * c
+            this.y = this.y / Math.abs(this.x) * c
+        }
+        return this
+    }
+
+    multiply(multiplier) {
+        this.x *= multiplier
+        this.y *= multiplier
+        return this
+    }
+
+    clone() {
+        return new Vector(this.x, this.y)
+    }
+
+    static division(vector_a, vector_b) {
+        return new Vector(
+            vector_a.x / vector_b.x,
+            vector_a.y / vector_b.y
+        )
+    }
+
+    floor() {
+        this.x = Math.floor(this.x)
+        this.y = Math.floor(this.y)
+        return this
+    }
+}