From f28500d963d6546feda522d7748a0462a568ba28 Mon Sep 17 00:00:00 2001
From: James Barnett <noreply@jamesbarnett.xyz>
Date: Mon, 28 Dec 2020 15:49:23 +0000
Subject: Refactor components

---
 src/main/kotlin/main.kt | 68 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 src/main/kotlin/main.kt

(limited to 'src/main/kotlin/main.kt')

diff --git a/src/main/kotlin/main.kt b/src/main/kotlin/main.kt
new file mode 100644
index 0000000..c07a661
--- /dev/null
+++ b/src/main/kotlin/main.kt
@@ -0,0 +1,68 @@
+import kotlinx.browser.document
+
+private const val MOVE_SPEED = 0.5
+private const val ROTATE_SPEED = 5
+
+data class RaycastContext(
+  val renderer: Renderer,
+  val camera: Camera,
+  val map: Map,
+  val minimap: Minimap
+)
+
+fun main() {
+  val renderer = Renderer(640, 480)
+  val camera = Camera(
+    fov = 60,
+    xPos = 2.0,
+    yPos = 2.0,
+    rotation = 90.0
+  )
+  val map = Map()
+  val minimap = Minimap(map)
+
+  val context = RaycastContext(renderer, camera, map, minimap)
+
+  val raycaster = Raycaster()
+
+  document.onkeydown = {
+    when (it.code) {
+      "KeyW" -> {
+        console.log("key w")
+        val cameraCos = kotlin.math.cos(toRadians(camera.rotation)) * MOVE_SPEED
+        val cameraSin = kotlin.math.sin(toRadians(camera.rotation)) * MOVE_SPEED
+        camera.xPos += cameraCos
+        camera.yPos += cameraSin
+      }
+      "KeyS" -> {
+        console.log("key s")
+        val cameraCos = kotlin.math.cos(toRadians(camera.rotation)) * MOVE_SPEED
+        val cameraSin = kotlin.math.sin(toRadians(camera.rotation)) * MOVE_SPEED
+        camera.xPos -= cameraCos
+        camera.yPos -= cameraSin
+      }
+      "KeyA" -> {
+        console.log("key a")
+        camera.rotation -= ROTATE_SPEED
+      }
+      "KeyD" -> {
+        console.log("key d")
+        camera.rotation += ROTATE_SPEED
+      }
+    }
+    paint(raycaster, context)
+    console.log("camera x:${camera.xPos} y:${camera.yPos} r: ${camera.rotation}")
+  }
+
+  paint(raycaster, context)
+}
+
+fun paint(raycaster: Raycaster, raycastContext: RaycastContext) {
+  raycastContext.renderer.clear()
+  raycaster.raycast(raycastContext)
+  raycastContext.minimap.update(raycastContext.camera)
+}
+
+fun toRadians(degrees: Double): Double {
+  return degrees * kotlin.math.PI / 180
+}
-- 
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