author sheepluva Tue, 08 Sep 2015 01:19:39 +0000 changeset 597 654a9b9b6aa5 parent 596 3b782365b20a child 598 c6bbd2eab199
Edited via web interface
 LuaDrawing.wiki file | annotate | diff | comparison | revisions
```--- a/LuaDrawing.wiki	Tue Sep 08 01:14:25 2015 +0000
+++ b/LuaDrawing.wiki	Tue Sep 08 01:19:39 2015 +0000
@@ -1,92 +1,92 @@
-#summary Drawing maps with Lua.
-
-= Drawing Maps With Lua (OUTDATED - don't use) =
-
-Starting in 0.9.18 it is possible to reliably use drawn map mode to draw maps with scripts.
-A simple example is given below.  Note that Drawn maps use an area of 4096x2048.  The examples below are static, but obviously this could be used for a random map variation - for example, simulating the Cave map by doing the fill below, then drawing random tunnels using circles that shift their course smoothly.
-
-= Details =
-
-First, a couple of convenience functions for drawing to the map.
-<code lang="lua">
-PointsBuffer = ''  -- A string to accumulate points in
-function AddPoint(x, y, width, erase)
-    PointsBuffer = PointsBuffer .. string.char(band(x,0xff00) / 256 , band(x,0xff) , band(y,0xff00) / 256 , band(y,0xff))
-    if width then
-        width = bor(width,0x80)
-        if erase then
-            width = bor(width,0x40)
-        end
-        PointsBuffer = PointsBuffer .. string.char(width)
-    else
-        PointsBuffer = PointsBuffer .. string.char(0)
-    end
-    if #PointsBuffer > 245 then
-        ParseCommand('draw '..PointsBuffer)
-        PointsBuffer = ''
-    end
-end
-function FlushPoints()
-    if #PointsBuffer > 0 then
-        ParseCommand('draw '..PointsBuffer)
-        PointsBuffer = ''
-    end
-end
-</code>
-AddPoint takes an x and y location for the point, a width (indicates the start of a new line) and erase (whether the line is erasing from the map).  The width calculation is described in [DrawnMapFormat].
-
-FlushPoints writes out any values from PointsBuffer that have not already been sent to the engine.
-It would be called at the end of a drawing session.
-
-A simple example below.
-
-<code lang="lua">
-function onGameInit()
-    MapGen = 2
-    TemplateFilter = 0
-
-    AddPoint(100,100,10)
-    AddPoint(2000,2000)
-    AddPoint(2000,100,10)
-    AddPoint(100,2000)
-    AddPoint(1000,1000,63,true)
-    AddPoint(1000,1000,20)
-
-    for i = 63,2,-4 do
-        AddPoint(2000,1000,i)
-        AddPoint(2000,1000,i-2,true)
-    end
-
-    for i = 1,2000,50 do
-        AddPoint(i+2000,2000,1)
-        AddPoint(4000,2000-i)
-    end
-
-    AddPoint(2000,2000,1)
-    AddPoint(4000,2000)
-    AddPoint(4000,0,1)
-    AddPoint(4000,2000)
-
-    FlushPoints()
-end
-</code>
-The first set of AddPoints draws a large X and erases the centre.
-The following loop draws a set of nested points, alternating erasure and fill, which results in a set of concentric circles.
-The 2nd loop draws a web of lines and frames it using some final AddPoints.
-
-<a href="http://m8y.org/hw/draw1.jpeg">screenshot here</a>
-
-Another brief example.
-<code lang="lua">
-    for i = 200,2000,600 do
-        AddPoint(1,i,63)
-        AddPoint(4000,i)
-    end
-    for i = 500,3500,1000 do
-        AddPoint(i,1000,63,true)
-    end
-    FlushPoints()
-</code>
-This one fills the map with solid land, and draws 4 circular erased points in it.
-
+#summary Drawing maps with Lua.
+
+= Drawing Maps With Lua (OUTDATED) =
+
+Starting in 0.9.18 it is possible to reliably use drawn map mode to draw maps with scripts.
+A simple example is given below.  Note that Drawn maps use an area of 4096x2048.  The examples below are static, but obviously this could be used for a random map variation - for example, simulating the Cave map by doing the fill below, then drawing random tunnels using circles that shift their course smoothly.
+
+= Details =
+
+First, a couple of convenience functions for drawing to the map.
+<code lang="lua">
+PointsBuffer = ''  -- A string to accumulate points in
+function AddPoint(x, y, width, erase)
+    PointsBuffer = PointsBuffer .. string.char(band(x,0xff00) / 256 , band(x,0xff) , band(y,0xff00) / 256 , band(y,0xff))
+    if width then
+        width = bor(width,0x80)
+        if erase then
+            width = bor(width,0x40)
+        end
+        PointsBuffer = PointsBuffer .. string.char(width)
+    else
+        PointsBuffer = PointsBuffer .. string.char(0)
+    end
+    if #PointsBuffer > 245 then
+        ParseCommand('draw '..PointsBuffer)
+        PointsBuffer = ''
+    end
+end
+function FlushPoints()
+    if #PointsBuffer > 0 then
+        ParseCommand('draw '..PointsBuffer)
+        PointsBuffer = ''
+    end
+end
+</code>
+AddPoint takes an x and y location for the point, a width (indicates the start of a new line) and erase (whether the line is erasing from the map).  The width calculation is described in [DrawnMapFormat].
+
+FlushPoints writes out any values from PointsBuffer that have not already been sent to the engine.
+It would be called at the end of a drawing session.
+
+A simple example below.
+
+<code lang="lua">
+function onGameInit()
+    MapGen = 2
+    TemplateFilter = 0
+
+    AddPoint(100,100,10)
+    AddPoint(2000,2000)
+    AddPoint(2000,100,10)
+    AddPoint(100,2000)
+    AddPoint(1000,1000,63,true)
+    AddPoint(1000,1000,20)
+
+    for i = 63,2,-4 do
+        AddPoint(2000,1000,i)
+        AddPoint(2000,1000,i-2,true)
+    end
+
+    for i = 1,2000,50 do
+        AddPoint(i+2000,2000,1)
+        AddPoint(4000,2000-i)
+    end
+
+    AddPoint(2000,2000,1)
+    AddPoint(4000,2000)
+    AddPoint(4000,0,1)
+    AddPoint(4000,2000)
+
+    FlushPoints()
+end
+</code>
+The first set of AddPoints draws a large X and erases the centre.
+The following loop draws a set of nested points, alternating erasure and fill, which results in a set of concentric circles.
+The 2nd loop draws a web of lines and frames it using some final AddPoints.
+
+<a href="http://m8y.org/hw/draw1.jpeg">screenshot here</a>
+
+Another brief example.
+<code lang="lua">
+    for i = 200,2000,600 do
+        AddPoint(1,i,63)
+        AddPoint(4000,i)
+    end
+    for i = 500,3500,1000 do
+        AddPoint(i,1000,63,true)
+    end
+    FlushPoints()
+</code>
+This one fills the map with solid land, and draws 4 circular erased points in it.
+
<a href="http://m8y.org/hw/draw2.jpeg">screenshot here</a>
\ No newline at end of file```