From 759db92cf135aba21f0cbd17073d2f2e294fdf4d Mon Sep 17 00:00:00 2001
From: sanine-a <sanine.not@pm.me>
Date: Fri, 12 May 2023 15:06:13 -0500
Subject: add nice builtin shaders

---
 honey/asset/shader.lua |  43 +++++++++++++++++++++++++++++++++++++++++++
 honey/ecs/script.lua   |  22 ++++++++++++++++++++++
 main.lua               |  28 +++++++++++++++++++++++++---
 palette.png            | Bin 0 -> 36541 bytes
 starfield.png          | Bin 0 -> 116815 bytes
 starfield2.png         | Bin 0 -> 88326 bytes
 6 files changed, 90 insertions(+), 3 deletions(-)
 create mode 100644 palette.png
 create mode 100644 starfield.png
 create mode 100644 starfield2.png

diff --git a/honey/asset/shader.lua b/honey/asset/shader.lua
index a23c17b..d1fecc4 100644
--- a/honey/asset/shader.lua
+++ b/honey/asset/shader.lua
@@ -140,4 +140,47 @@ clearCache = function()
 end
 
 
+--===== builtin shaders =====--
+
+builtin["builtin.basic3d.vert"] = [[
+	#version 410 core
+	layout (location = 0) in vec3 in_position;
+	layout (location = 1) in vec3 in_normal;
+	layout (location = 2) in vec2 in_texture;
+
+	uniform mat4 model;
+	uniform mat4 view;
+	uniform mat4 projection;
+
+	out vec3 position;
+	out vec3 normal;
+	out vec2 tex;
+
+	void main()
+	{
+		gl_Position = projection * view * model * vec4(in_position, 1.0);
+
+		position = in_position;
+		normal = in_normal;
+		tex = in_texture;
+	}
+]]
+
+builtin["builtin.flat.frag"] = [[
+	#version 410 core
+
+	out vec4 frag_color;
+
+	in vec3 position;
+	in vec3 normal;
+	in vec2 tex;
+
+	uniform sampler2D surface;
+
+	void main()
+	{
+		frag_color = texture(surface, tex);
+	}
+]]
+
 return module
diff --git a/honey/ecs/script.lua b/honey/ecs/script.lua
index 46af4fa..a9b7644 100644
--- a/honey/ecs/script.lua
+++ b/honey/ecs/script.lua
@@ -1,3 +1,5 @@
+local glfw = honey.glfw
+
 local ecs  = require 'honey.ecs.ecs'
 local node = require 'honey.ecs.node'
 
@@ -27,6 +29,26 @@ dispatch = function(db, msg, data)
 	end
 end
 
+--===== bind window events to script handlers =====--
+
+bindEvents = function(window, db)
+	glfw.SetFramebufferSizeCallback(window, function(w, width, height)
+		dispatch(db, "onFramebufferSize", {window=w, width=width, height=height})
+	end)
+	
+	glfw.SetKeyCallback(window, function(w, key, scancode, action, mods)
+		dispatch(db, "onKey", {window=w, key=key, scancode=scancode, action=action, mods=mods})
+	end)
+
+	glfw.SetCursorPosCallback(window, function(w, xpos, ypos)
+		dispatch(db, "onCursorPos", {window=w, xpos=xpos, ypos=ypos})
+	end)
+
+	glfw.SetMouseButtonCallback(window, function(w, button, action, mods)
+		dispatch(db, "onMouseButton", {window=w, button=button, action=action, mods=mods})
+	end)
+end
+
 --===== script system =====--
 
 local script = ecs.System("script", function(db, dt, params)
diff --git a/main.lua b/main.lua
index c251071..60cc174 100644
--- a/main.lua
+++ b/main.lua
@@ -26,6 +26,26 @@ db:createEntityWithComponents{
 	},
 }
 
+-- skybox
+db:createEntityWithComponents{
+	node = {
+		matrix = Mat4()
+			:identity(),
+	},
+	renderMesh = {
+		mesh = {
+			filename = "assets/skybox.obj",
+			index = 1,
+		},
+		uniforms = {
+			textures = {
+				surface = { filename = "starfield2.png" },
+			},
+		},
+		shader = { vertex = "builtin.basic3d.vert", fragment = "builtin.flat.frag" },
+	},
+}
+
 -- mesh
 db:createEntityWithComponents{
 	node = {
@@ -37,15 +57,17 @@ db:createEntityWithComponents{
 			filename = "assets/dodecahedron.obj",
 			index = 1,
 		},
-		textures = {
-			ourTexture = { filename = "assets/green-grass.jpg" },
+		uniforms = {
+			textures = {
+				ourTexture = { filename = "assets/green-grass.jpg" },
+			},
 		},
 		shader = { vertex="vertex.glsl", fragment="fragment.glsl" },
 	},
 }
 
 honey.loop(function(dt)
-	gl.ClearColor(0.2, 0.4, 1.0, 1.0)
+	gl.ClearColor(0xa/0xff, 0x10/0xff, 0x1f/0xff, 1.0)
 	gl.Clear(gl.COLOR_BUFFER_BIT + gl.DEPTH_BUFFER_BIT + gl.STENCIL_BUFFER_BIT)
 	systems:update(dt)
 end)
diff --git a/palette.png b/palette.png
new file mode 100644
index 0000000..52a1cbd
Binary files /dev/null and b/palette.png differ
diff --git a/starfield.png b/starfield.png
new file mode 100644
index 0000000..f67fc93
Binary files /dev/null and b/starfield.png differ
diff --git a/starfield2.png b/starfield2.png
new file mode 100644
index 0000000..c6a4853
Binary files /dev/null and b/starfield2.png differ
-- 
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