From 9e2d449d926c6bd15d8a37942573444f376fc2ba Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dominik=20Madar=C3=A1sz?= <zaklaus@outlook.com>
Date: Thu, 10 Aug 2023 21:52:43 +0200
Subject: [PATCH] lua stuff

---
 MAKE.bat              | 10 ++++++++
 demos/lua/99-draw.lua | 56 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 66 insertions(+)
 create mode 100644 demos/lua/99-draw.lua

diff --git a/MAKE.bat b/MAKE.bat
index c671ed1..27841f1 100644
--- a/MAKE.bat
+++ b/MAKE.bat
@@ -260,6 +260,8 @@ if "%1"=="help" (
     echo %0 [docs]            ; generate tools/docs/docs.html file
     echo %0 [cook]            ; cook .zipfiles with tools/cook.ini cookbook
     echo %0 [sync]            ; sync repo to latest
+    echo %0 [fwk]             ; prepare files for fwk PR
+    echo %0 [lua]             ; execute lua script with v4k
     echo %0 [pull]            ; pull changes from 'latest' upstream
     echo %0 [git]             ; prepare for commit
     echo %0 [push]            ; prepare for commit, stage changes and commit them
@@ -316,6 +318,14 @@ if "%1"=="bind" (
 
     exit /b
 )
+
+if "%1"=="lua" (
+    pushd engine\bind
+        luajit "..\..\%2"
+    popd
+    exit /b
+)
+
 rem generate documentation
 if "%1"=="docs" (
     rem set symbols...
diff --git a/demos/lua/99-draw.lua b/demos/lua/99-draw.lua
new file mode 100644
index 0000000..91f7fde
--- /dev/null
+++ b/demos/lua/99-draw.lua
@@ -0,0 +1,56 @@
+-- this will run on vanilla luajit.exe, provided that v4k.dll and this file are all present in same folder
+
+local v4k=require('v4k')
+
+-- specify location of cookbook
+v4k.cook_config("../../tools/cook.ini");
+
+-- create 75% sized + MSAAx2 anti-aliased window
+v4k.window_create(75.0, v4k.WINDOW_MSAA2)
+
+-- set window title
+v4k.window_title("hello luajit")
+
+-- config girl
+local girl = v4k.model('kgirl/kgirls01.fbx', 0)
+local girl_frame = 0
+local girl_pivot = v4k.mat44()
+v4k.rotationq44(girl_pivot, v4k.eulerq(v4k.vec3(0,0,0)))
+v4k.scale44(girl_pivot, 2,2,2)
+
+-- config & play music
+local music = v4k.audio_stream('larry.mid') -- 'wrath_of_the_djinn.xm'
+v4k.audio_play(music, 0);
+
+-- config camera
+local cam = v4k.camera()
+
+-- main loop
+while v4k.window_swap() == 1 do
+   -- fps camera
+   local grabbed = v4k.input(v4k.MOUSE_L) == 1 or v4k.input(v4k.MOUSE_R) == 1
+   v4k.window_cursor( v4k.ui_active() == 1 or v4k.ui_hover() == 1 and 1 or (not grabbed) )
+   if( v4k.window_has_cursor() ~= 1 ) then
+      local wasdec3 = v4k.vec3(v4k.input(v4k.KEY_D)-v4k.input(v4k.KEY_A),v4k.input(v4k.KEY_E)-(v4k.input(v4k.KEY_C)),v4k.input(v4k.KEY_W)-v4k.input(v4k.KEY_S))
+      local look2 = v4k.scale2(v4k.vec2(v4k.input_diff(v4k.MOUSE_X), -v4k.input_diff(v4k.MOUSE_Y)), 0.2)
+      local move3 = v4k.scale3(wasdec3, cam.speed)
+      v4k.camera_move(cam, wasdec3.x,wasdec3.y,wasdec3.z)
+      v4k.camera_fps(cam, look2.x,look2.y)
+   end
+
+   -- draw grid/axis
+   v4k.ddraw_grid(0)
+   v4k.ddraw_flush()
+
+   -- animate girl
+   local delta = v4k.window_delta() * 30 -- 30fps anim
+   girl_frame = v4k.model_animate(girl, girl_frame + delta)
+
+   -- draw girl
+   v4k.model_render(girl, cam.proj, cam.view, girl_pivot, 0)
+
+   -- showcase ui
+   if v4k.ui_panel("luajit", 0) == 1 then
+      v4k.ui_panel_end()
+   end
+end