# HG changeset patch
# User sam <sam@basx.dev>
# Date 1713203221 -25200
# Node ID 8b0a91fa2210d8e9d775b3f124a90e399ae8de3e
# Parent  443e8090614c6844456cd663dd41e258deb16ff4
add: better error messages

diff -r 443e8090614c -r 8b0a91fa2210 semicongine/engine.nim
--- a/semicongine/engine.nim	Tue Apr 16 00:36:39 2024 +0700
+++ b/semicongine/engine.nim	Tue Apr 16 00:47:01 2024 +0700
@@ -182,7 +182,8 @@
 
 proc renderScene*(engine: var Engine, scene: var Scene) =
   assert engine.state == Running
-  assert engine.renderer.isSome
+  assert engine.renderer.isSome, "Renderer has not yet been initialized, call 'engine.initRenderer' first"
+  assert engine.renderer.get.hasScene(scene), &"Scene '{scene.name}' has not been loaded yet"
   let t0 = getMonoTime()
 
   engine.renderer.get.startNewFrame()
diff -r 443e8090614c -r 8b0a91fa2210 semicongine/renderer.nim
--- a/semicongine/renderer.nim	Tue Apr 16 00:36:39 2024 +0700
+++ b/semicongine/renderer.nim	Tue Apr 16 00:47:01 2024 +0700
@@ -49,6 +49,9 @@
 proc currentFrameCommandBuffer(renderer: Renderer): VkCommandBuffer =
   renderer.commandBufferPool.buffers[renderer.swapchain.currentInFlight]
 
+proc hasScene*(renderer: Renderer, scene: Scene): bool =
+  scene in renderer.scenedata
+
 proc initRenderer*(
   device: Device,
   shaders: openArray[(MaterialType, ShaderConfiguration)],