begun skramble clone

compiler/src/prog8/compiler/Main.kt

@@ -68,7 +68,8 @@ fun compileProgram(filepath: Path,
         System.out.flush()
         throw x
     }
-    return CompilationResult(false, programAst, programName, importedFiles)
+
+    return CompilationResult(false, Program("failed", mutableListOf()), programName, emptyList())
 }
 
 private fun parseImports(filepath: Path, errors: ErrorReporter): Triple<Program, CompilationOptions, List<Path>> {

examples/skramble.p8

@@ -0,0 +1,78 @@
+; clone of the old Scramble arcade game.
+; TODO work in progress...
+
+%import c64lib
+%import c64utils
+%zeropage basicsafe
+
+main {
+
+    sub start() {
+        c64scr.plot(30,2)
+        c64scr.print("skramble !")
+
+        ubyte target_height = 10
+        ubyte active_height = 25
+
+        forever {
+            if active_height < target_height {
+                active_height++
+            } else if active_height > target_height {
+                active_height--
+            } else {
+                target_height = 10 + rnd() % 13
+                continue
+            }
+
+            c64scr.scroll_left_full(true)
+            ubyte yy
+            for yy in 0 to active_height-1 {
+                c64scr.setcc(39, yy, 32, 2)
+            }
+            for yy in active_height to 24 {
+                c64scr.setcc(39, yy, 102, 8)
+            }
+
+            yy = rnd()
+            if yy > 100 {
+                ; draw a star
+                c64scr.setcc(39, yy % (active_height-1), '.', rnd())
+            }
+
+            if yy > 200 {
+                ; draw a tree
+                ubyte tree = 30
+                ubyte treecolor = 5
+                if yy & %01000000 != 0
+                    tree = 88
+                else if yy & %00100000 != 0
+                    tree = 65
+                if rnd() > 130
+                    treecolor = 13
+                c64scr.setcc(39, active_height-1, tree, treecolor)
+            }
+
+            if yy > 235 {
+                ; draw a camel
+                c64scr.setcc(39, active_height-1, 94, 9)
+            }
+
+            ; check ship crash
+;            ubyte shipchar3 = c64scr.getchr(2, 10)
+;            if (shipchar3!=@'.' and shipchar3!=@' ') {
+;                break       ; game over
+;            }
+
+            ; draw space ship
+;            c64scr.setcc(0, 10, @'*', 15)
+;            c64scr.setcc(1, 10, @'=', 15)
+;            c64scr.setcc(2, 10, @'>', 15)
+
+            for A in 0 to 4 {
+                while @($d012) != 100 {
+                    ; just wait for the raster beam...
+                }
+            }
+        }
+    }
+}