6 files changed, 130 insertions, 8 deletions
diff --git a/source/dw/app/getshdprg.rs b/source/dw/app/getshdprg.rs
new file mode 100644
index 0000000..2e02ff8
--- /dev/null
+++ b/source/dw/app/getshdprg.rs
@@ -0,0 +1,71 @@
+// Copyright 2023 Gabriel Jensen.
+
+use crate::dw::{app::App,datpth};
+
+extern crate gl;
+
+use gl::{AttachShader,COMPILE_STATUS,CompileShader,CreateProgram,CreateShader,DeleteShader,FALSE,FRAGMENT_SHADER,GetShaderiv,LinkProgram,ShaderSource,VERTEX_SHADER};
+use gl::types::{GLchar,GLenum,GLint,GLuint};
+use std::fs::read;
+use std::ptr::{addr_of,null};
+
+impl App {
+	pub fn getshdprg(&mut self) -> GLuint {
+		eprintln!("compiling shaders");
+
+		let cmpshd = |nam: & str,typ:GLenum| -> GLuint {
+			let typstr = match typ {
+				FRAGMENT_SHADER => "fragment",
+				VERTEX_SHADER   => "vertex",
+				_               => panic!("invalid shader type {}",typ),
+			};
+
+			let filext = match typ {
+				FRAGMENT_SHADER => "frag",
+				VERTEX_SHADER   => "vert",
+				_               => panic!("invalid shader type {}",typ),
+			};
+
+			let mut pth = String::new();
+			pth.push_str(datpth());
+			pth.push_str("/shader/");
+			pth.push_str(nam);
+			pth.push(    '.');
+			pth.push_str(filext);
+			pth.push_str(".glsl");
+
+			eprintln!("compiling {} shader at \"{}\"",typstr,pth);
+
+			let src = read(pth).expect("unable to read shader at");
+
+			unsafe {
+				let shd    = CreateShader(typ);
+				let srcptr = src.as_ptr();
+				ShaderSource(shd,0x1,addr_of!(srcptr) as *const *const GLchar,null::<GLint>());
+
+				CompileShader(shd);
+
+				let mut sts:GLint = 0x0;
+				GetShaderiv(shd,COMPILE_STATUS,&mut sts);
+				if sts == FALSE as GLint {panic!("unable to compile shader");}
+
+				return shd;
+			}
+		};
+
+		let frgshd = cmpshd("main",FRAGMENT_SHADER);
+		let vtxshd = cmpshd("main",VERTEX_SHADER);
+		
+		unsafe {
+			let prg = CreateProgram();
+			AttachShader(prg,frgshd);
+			AttachShader(prg,vtxshd);
+			LinkProgram(prg);
+
+			DeleteShader(frgshd);
+			DeleteShader(vtxshd);
+
+			return prg;
+		}
+	}
+}
diff --git a/source/dw/app/ini.rs b/source/dw/app/ini.rs
index 5d168eb..5e39556 100644
--- a/source/dw/app/ini.rs
+++ b/source/dw/app/ini.rs
@@ -1,7 +1,7 @@
 // Copyright 2023 Gabriel Jensen.
 
 use crate::dw::app::App;
-use crate::dw::VER;
+use crate::dw::{datpth,VER};
 
 extern crate glfw;
 
@@ -9,6 +9,10 @@ impl App {
 	pub fn ini(&mut self) -> i8 {
 		println!("\x1B[0m\x1B[1mDeltaWorld\x1B[0m {}.{}.{} \u{2014} Copyright 2023 \x1B[0m\x1B[1mGabriel Jensen\x1B[0m.\n",VER.maj,VER.min,VER.pat);
 
+		eprintln!("data directory at \"{}\"",datpth());
+
+		self.inisig();
+
 		let mut gfx = self.inigfx();
 
 		let cod = self.lop(&mut gfx);
diff --git a/source/dw/app/inigfx.rs b/source/dw/app/inigfx.rs
index b037757..9760ded 100644
--- a/source/dw/app/inigfx.rs
+++ b/source/dw/app/inigfx.rs
@@ -1,7 +1,6 @@
 // Copyright 2023 Gabriel Jensen.
 
-use crate::dw::app::App;
-use crate::dw::app::Gfx;
+use crate::dw::app::{App,Gfx};
 
 extern crate gl;
 extern crate glfw;
@@ -27,10 +26,13 @@ impl App {
 		eprintln!("initialising opengl");
 		gl::load_with(|nam| glfw.get_proc_address_raw(nam) as *const c_void);
 
+		let shdprg = self.getshdprg();
+
 		return Gfx {
-			glfw: glfw,
-			win:  win,
-			evt:  evt,
+			evt:   evt,
+			glfw:  glfw,
+			shdprg:shdprg,
+			win:   win,
 		};
 	}
 }
diff --git a/source/dw/app/inisig.rs b/source/dw/app/inisig.rs
new file mode 100644
index 0000000..12e8061
--- /dev/null
+++ b/source/dw/app/inisig.rs
@@ -0,0 +1,28 @@
+// Copyright 2023 Gabriel Jensen.
+
+use crate::dw::app::{App,GOTINT};
+
+extern crate libc;
+
+use libc::{c_int,sighandler_t,signal,SIGINT,SIGTERM};
+use std::mem::transmute;
+use std::sync::atomic::Ordering;
+
+fn hnd(sig: c_int) {
+	unsafe {
+		signal(sig,transmute::<fn(c_int),sighandler_t>(hnd));
+
+		GOTINT.store(true,Ordering::Relaxed);
+	}
+}
+
+impl App {
+	pub fn inisig(&mut self) {
+		eprintln!("initialising signal handlers");
+
+		unsafe {
+			signal(SIGINT, transmute::<fn(c_int),sighandler_t>(hnd));
+			signal(SIGTERM,transmute::<fn(c_int),sighandler_t>(hnd));
+		}
+	}
+}
diff --git a/source/dw/app/lop.rs b/source/dw/app/lop.rs
index af3e81c..928ddf1 100644
--- a/source/dw/app/lop.rs
+++ b/source/dw/app/lop.rs
@@ -1,18 +1,25 @@
 // Copyright 2023 Gabriel Jensen.
 
-use crate::dw::app::App;
+use crate::dw::app::{App,GOTINT};
 use crate::dw::app::Gfx;
 
 //extern crate gl;
 extern crate glfw;
 
-use glfw::{Context};
+use std::sync::atomic::Ordering;
 
 impl App {
 	pub fn lop(&mut self,gfx: &mut Gfx) -> i8 {
 		eprintln!("entering main loop");
 
 		while !gfx.win.should_close() {
+			unsafe {
+				if GOTINT.load(Ordering::Relaxed) {
+					eprintln!("got interrupt");
+					gfx.win.set_should_close(true);
+				}
+			}
+
 			gfx.glfw.poll_events();
 		}
 
diff --git a/source/dw/app/new.rs b/source/dw/app/new.rs
new file mode 100644
index 0000000..7c99f65
--- /dev/null
+++ b/source/dw/app/new.rs
@@ -0,0 +1,10 @@
+// Copyright 2023 Gabriel Jensen.
+
+use crate::dw::app::App;
+
+impl App {
+	pub fn new() -> App {
+		return App {
+		};
+	}
+}