From 05009088588e6171dd26c3002208e338e2c5a65a Mon Sep 17 00:00:00 2001
From: sanine <sanine.not@pm.me>
Date: Sun, 19 Mar 2023 01:17:48 -0500
Subject: add shader:configure()

---
 main.lua | 75 +++++++++++++++++++++++++++++++++++-----------------------------
 1 file changed, 41 insertions(+), 34 deletions(-)

(limited to 'main.lua')

diff --git a/main.lua b/main.lua
index 9be332b..c9b1733 100644
--- a/main.lua
+++ b/main.lua
@@ -13,7 +13,7 @@ local camera = {
 	view=Mat4.Identity(),
 	projection=Mat4(),
 }
-camera.view:translate(Vec3{0, 0, -3})
+camera.view:translate(Vec3{0, 0, -60})
 camera.projection:perspective(math.rad(45), 640/480, 0.1, 100)
 
 
@@ -57,9 +57,13 @@ world:addSystem{
 	filter=ecs.Filter.AND{"mesh", "shader", "transform"},
 	update=function(entity, dt)
 		entity.shader:use()
-		entity.shader:setMatrix('model', entity._transform)
-		entity.shader:setMatrix('view', camera.view)
-		entity.shader:setMatrix('projection', camera.projection)
+		entity.shader:configure{
+			matrix={
+				model=entity._transform,
+				view=camera.view,
+				projection=camera.projection,
+			},
+		}
 		entity.mesh:drawElements()
 	end,
 	priority=99,
@@ -128,35 +132,47 @@ local dodeca = honey.mesh.loadFile("assets/dodecahedron.obj")[1]
 local icosa  = honey.mesh.loadFile("assets/icosahedron.obj")[1]
 
 
-local tetraEntity = {
-	parent=false,
-	transform=Mat4.Identity(),
-	mesh=tetra,
-	shader=shader,
-}
+function growLine(prev, depth)
+	if depth == 0 then return prev end
 
-local cubeEntity = {
-	parent=tetraEntity,
-	transform=Mat4.Identity(),
-	mesh=cube,
-	shader=shader,
-}
-cubeEntity.transform:translate(Vec3{2, 0, 0})
+	local entity = {
+		transform=Mat4.Identity(),
+		mesh=octa,
+		shader=shader,
+	}
+	entity.transform:translate(Vec3{2, 0, 0})
+	prev.parent = entity
+	world:addEntity(prev)
+	return growLine(entity, depth-1)
+end
 
-local octaEntity = {
-	parent=cubeEntity,
+
+local leaf = {
 	transform=Mat4.Identity(),
-	mesh=octa,
+	mesh=tetra,
 	shader=shader,
 }
-octaEntity.transform:translate(Vec3{2, 0, 0})
+local root = growLine(leaf, 24)
+root.parent = false
+world:addEntity(root)
 
 
+function updateTransforms(dt)
+	local entity = leaf
+	while entity ~= false do
+		entity.transform:rotateY(0.3 * math.pi * dt)
+		entity.transform:rotateX(0.1 * math.pi * dt)
+		entity = entity.parent	
+	end
+end
+
 
 
-world:addEntity(tetraEntity)
-world:addEntity(cubeEntity)
-world:addEntity(octaEntity)
+window:setKeyCallback(function(_, key)
+	if key == glfw.KEY_ESCAPE then
+		window:setShouldClose(true)
+	end
+end)
 
 
 
@@ -166,16 +182,7 @@ while not window:shouldClose() do
 	local dt = time - prevTime
 	prevTime = time
 
-	tetraEntity.transform:identity()
-	tetraEntity.transform:rotateY(0.5 * math.pi * time)
-	tetraEntity.transform:rotateX(0.05 * math.pi * time)
-	--model:scale(0.2 * Vec3{1, 1, 1})
-
-	cubeEntity.transform:identity()
-	cubeEntity.transform:translate(Vec3{2, 0, 0})
-	cubeEntity.transform:rotateY(0.3 * math.pi * time)
-	cubeEntity.transform:rotateX(0.08 * math.pi * time)
-
+	updateTransforms(dt)
 
 	gl.ClearColor(0.2, 0.4, 1.0, 1.0)
 	gl.Clear(gl.COLOR_BUFFER_BIT + gl.DEPTH_BUFFER_BIT)
-- 
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