1 files changed, 43 insertions, 0 deletions
diff --git a/prge_gui.c b/prge_gui.c
new file mode 100644
index 0000000..f1d03d7
--- /dev/null
+++ b/prge_gui.c
@@ -0,0 +1,43 @@
+B32 in_rect(V2 pos, V2 start, V2 end)
+{
+	B32	res;
+	res = ((pos.x > start.x) && (pos.x < end.x) &&
+	       (pos.y > start.y) && (pos.y < end.y));
+	return res;
+}
+
+B32 button(Window *wnd, U32 shader, Input *input, Arena *arena,
+	   Str8 name, V2 center, F32 w, F32 h)
+{
+	B32	res;
+	Mesh	*quad;
+	V2	start, end;
+	MAT4	model;
+	Str8	info;
+
+	res = 0;
+
+	quad = mesh_gen_quad(arena, v3fromv2(center), V3_ZERO, w, h);
+
+	shader_set_4fv(shader, "color", v4(1.0f, 0.0f, 0.0f, 1.0f));
+
+	start = v2(center.x-w/2.0f, center.y-h/2.0f);
+	end = v2(center.x+w/2.0f, center.y+h/2.0f);
+	if (in_rect(input->mouse_pos, start, end) && 
+	    !input->capture_mouse)
+	{
+		shader_set_4fv(shader, "color", v4(0.0f, 0.0f, 1.0f, 1.0f));
+		if (key_first_press(input->mouse_left))
+			res = 1;
+	}
+
+	model = mat4transl(MAT4_IDENTITY, v3(center.x, wnd->height-center.y, 0.0f));
+
+	shader_set_mat4fv(shader, "model", model);
+
+	mesh_draw(quad);
+
+	mesh_clear(quad);
+
+	return res;
+}