Changes between Version 33 and Version 34 of content/LevelHowTo

Timestamp:

Feb 23, 2012, 5:38:08 PM (13 years ago)

Author:

jo

Comment:

—

content/LevelHowTo

@@ -198 +198 @@
 
 == Lua ==
-Lua is the scripting language we use in our levels. At the beginning of the file templates for spaceships, the hud and more are loaded. What lua does is in fact editing the XML file before the level is loaded. (that's why you cannot rely on the line numbers displayed when an error occurs.
+Lua is the scripting language we use in our levels. At the beginning of the file templates for spaceships, the hud and more are loaded. What lua does in this context is editing the XML file and inserting the concerning XML (of the spaceships, hud, ..) before the level is loaded. That's why you cannot rely on the line numbers displayed when an error occurs, since before loading lua changes the file.
 
 What lua can do:
  * load external skripts: for example the cuboid spacestation.
 {{{
-<!-- First, the script has to be included. -->
-#!xml <?lua
-    dofile("includes/CuboidSpaceStation.lua")
-?>
-
-<!-- Usage: Creates a modular space station -->
-<StaticEntity scale=1 position="4650,5350,-11050" name=base visible=true active=true yaw=60>
-    <attached>
-        <?lua
-            createSpaceStationPar(9851,2,1,2,1,2,1,100)
-        ?>
-    </attached>
-</StaticEntity>
+#!xml
+<!-- First, the script has to be included (only once). -->
+<?lua
+    dofile("includes/asteroidField.lua")
+?>
+
+<!-- Usage: Creates an asteroid belt -->
+<?lua
+     asteroidBelt(20000, 0, 13000, -48, -34, 70, 100, 200, 22000, 20000, 500, 1)
+?>
+<!-- asteroidBelt(centerX, centerY, centerZ, yaw, pitch, segments, minSize, maxSize, radius0, radius1, count, fog) -->
 }}}
 
  * Create a bunch of objects (depending on the index i). Whatever is placed within those lua tags will be created several times.
 {{{
-#!xml <?lua
+#!xml
+<!-- A for loop. The index i starts from 1, is increased up to 10 by adding +1. -->
+<?lua
 for i = 1, 10, 1 do
 ?>
-
+    <SpawnPoint team=0 position="<?lua print(i*100 + 50) ?>,0,0" lookat="0,0,0" spawnclass=SpaceShip pawndesign=spaceshipassff />
 <?lua end ?>
-<!-- A for loop. the index i starts from 1, is increased up to 10 by adding +1. -->
-}}}
-
- * Insert randomized values. By doing so your level's appearance is slightly changing whenever it is loaded.
-{{{
-#!xml
-<?lua print(math.random() * 10 + 5) ?>
+}}}
+ Note that '''<?lua print(i*100 + 50) ?>''' directly inserts the calculated value when the level is loaded.
+
+ * Randomized values, sinus, cosinus and more. (Via sinus and cosinus circular shapes can be created easily. The randomization changes your level's appearance whenever it is reloaded.)
+{{{
+#!xml
+<?lua
+max = 16
+for i = 0, max, 1
+do
+    y = math.sin(i/max*6)*750
+    z = math.cos(i/max*6)*750
+?>
+    <StaticEntity position="<?lua print(y) ?>,0,<?lua print(z) ?>" scale="<?lua print(math.random() * 10 + 5) ?>" collisionType="static" >
+<?lua end ?>
+
+
 }}}