added TANK MODEHEADmaster-fmsbw-cimaster

* This is a gimmick pseudo-game for driving a tank around your buffer.
* The tank is "animated" and crushes non-space characters it drives over.
* When shooting, it deletes characters that get hit.
* When escaping, the tank explodes and leaves a "crater" behind.

3 files changed, 213 insertions, 1 deletions

diff --git a/freebsd/pkg-plist b/freebsd/pkg-plist
index ab74145..dd3e7cb 100644
--- a/freebsd/pkg-plist
+++ b/freebsd/pkg-plist
@@ -13,6 +13,7 @@ share/man/man7/%%PROGRAM_PREFIX%%sciteco.7.gz
 %%DATADIR%%/lib/getopt.tes
 %%DATADIR%%/lib/lexer.tes
 %%DATADIR%%/lib/repl.tes
+%%DATADIR%%/lib/tank.tes
 %%DATADIR%%/lib/tecat.tes
 %%LEXILLA%%%%DATADIR%%/lib/lexers/abaqus.tes
 %%LEXILLA%%%%DATADIR%%/lib/lexers/ada.tes
diff --git a/lib/Makefile.am b/lib/Makefile.am
index 0da616a..04e83ad 100644
--- a/lib/Makefile.am
+++ b/lib/Makefile.am
@@ -1,5 +1,5 @@
 dist_scitecolib_DATA = color.tes lexer.tes session.tes opener.tes \
-                       fnkeys.tes string.tes getopt.tes
+                       fnkeys.tes string.tes getopt.tes tank.tes
 
 # Standalone scripts.
 # These are not installed via _SCRIPTS as it would add the --program-prefix.
diff --git a/lib/tank.tes b/lib/tank.tes
new file mode 100644
index 0000000..8573e22
--- /dev/null
+++ b/lib/tank.tes
@@ -0,0 +1,211 @@
+!*
+ * TANK MODE
+ *
+ * Drive an ASCII tank around your buffer.
+ * Invoke via EIQ[$SCITECOPATH]/tank.tes
+ *!
+[tank.sprite.0] !* background *!
+
+!* FIXME: Perhaps encode the gun's top in the integer cell *!
+[tank.sprite.1]
+█▓█▓
+╠════○
+▓█▓█
+[tank.sprite.2]
+  █▓█▓
+○════╣
+  ▓█▓█
+[tank.sprite.3]
+ ┌┐
+▓││█
+█││▓
+▓┴┴█
+[tank.sprite.4]
+█┬┬▓
+▓││█
+█││▓
+ └┘
+
+!*
+ * f,tM[tank.rand] - LCG pseudo random number generator for values between f and t
+ * This is based on the version in the BSD libc.
+ *!
+::U[tank.rand]
+@[tank.rand]{
+  U.tU.f
+  (1103515245*Q[tank.rand]+12345) & (2^*31-1)U[tank.rand]
+  (Q[tank.rand]^/(Q.t-Q.f+1)+Q.f)
+}
+
+!* x,yM[tank.goto] -> success|failure *!
+@[tank.goto]{
+  U.yU.x
+  Q.x"< 0 ' Q.y"< 0 '
+  J Q.y:L"F 0 '
+  Q.x<0A"< I  F> ' 0A-10"= I  F> ' C>
+  -1
+}
+
+!* x,y,spriteM[tank.blit] *!
+@[tank.blit]{
+  U.sU.yU.x Q.xU.#x0
+  Q.s"N
+    10[tank.sprite.0] !* background *!
+    %[tank.blit]
+  '
+  <
+    %.iQ[tank.sprite.\.s]U.c Q.c:;
+    Q[tank.blit]&1"=
+      !* toggle the chain character to simulate movements *!
+      Q.c-█"= ▓U.c | Q.c-▓"= █U.c ' '
+    '
+
+    Q.c-10"=
+      %.y Q.#x0U.x
+      Q.s"N 10:[tank.sprite.0] '
+    |
+      Q.x,Q.yM[tank.goto];
+      Q.s"N !* not background sprite *!
+        Q.c- "=
+          !* space is "transparent" - copy background unmodified *!
+          0A"< I  | 0A-10"= I  | C ' '
+          -A:[tank.sprite.0]
+          %.x F<
+        '
+        !* "destroy" fields we have touched *!
+         U.d
+          0A"F 0A-10"N 0A- "N 33,126M[tank.rand]U.d ' ' '
+        Q.d:[tank.sprite.0]
+      '
+      0A"F 0A-10"N D ' ' Q.cI
+      %.x
+    '
+  >
+}
+
+@[tank.explode]{
+  !!.[explosion]*oO%. 
+  .[explosion]✹✸✶✧· 
+  :Q.[explosion]<
+    0A"F 0A-10"N D ' '
+    %.i-1Q.[explosion]IR
+  >
+}
+
+0U[tank.score]
+
+@[tank.shoot]{
+  U.#dr U.yU.x
+
+  !* FIXME: Could also be encoded into a map *!
+  Q.#dr-1Oright,left,up,down
+  !right!
+    6-1%.x %.y
+    1U.#dx 0U.#dy
+    Oend
+  !left!
+    %.y
+    -U.#dx 0U.#dy
+    Oend
+  !up!
+    2-1%.x
+    0U.#dx -U.#dy
+    Oend
+  !down!
+    2-1%.x 3%.y
+    0U.#dx 1U.#dy
+    !* fall through *!
+  !end!
+    <
+      (Q.#dx%.x),(Q.#dy%.y)M[tank.goto]"F  '
+      0A"<  ' Q.#dy"= 0A-10"=  ' '
+      0A- "N 0A-10"N 1; ' '
+      0A"F 0A-10"N D ' ' I●
+       -DI 
+    >
+    M[tank.explode]
+
+    %[tank.score] 
SCORE: \[tank.score]

+}
+
+@[tank.selfdestruct]{
+  U.yU.x Q.x+2U.#cx Q.y+2U.#cy
+  .[explosion]✹✹✸✸✶✶✧✧· 
+  10<
+    Q.#cx-10U.x 20<
+      Q.x-1"< %.x F> '
+      Q.#cy-10U.y 20<
+        !* d = sqrt((x - cx)^2 + ((y - cy) * aspect)^2) *!
+        (Q.x-Q.#cx)^*2 + ((Q.y-Q.#cy)*2)^*2 U.#d2
+
+        Q.r^*2 - Q.#d2"<
+          Q.#d2 - (Q.r+2)^*2"<
+            !* on shock wave *!
+            Q.x,Q.yM[tank.goto]"F %.y F> '
+            -D Q.rQ.[explosion]I
+          '
+        |
+          !* within shock wave *!
+          Q.x,Q.yM[tank.goto]"F %.y F> '
+          -D I 
+        '
+      %.y>
+    %.x>
+    1
+  %.r>
+  Q.#cx,Q.#cyM[tank.goto]
+}
+
+ESGETCOLUMNU.x :-1U.y
+Q.xU.#xo Q.yU.#yo
+
+!*
+ * Normalize identations to spaces -- assumed by M[goto]
+ * FIXME: Will not work well with character representations.
+ *!
+ESGETTABDRAWMODE-2"N
+  J <S^I;
+    ESGETCOLUMN-(-1ESGETCOLUMN)U.w
+    -D Q.w<I >
+  >
+'
+
+
CONTROL: W A S D. SHOOT: SPACE. QUIT: ESCAPE. PRESS ANY KEY TO START.
 
+
+ESGETCARETSTYLEU.[caretstyle]
+0ESSETCARETSTYLE
+
+1U.[sprite]
+<
+  Q.#xo,Q.#yo,0M[tank.blit] !* redraw background *!
+  Q.xU.#xo Q.yU.#yo
+
+  Q.x,Q.y,Q.[sprite]M[tank.blit]
+  0 U.c
+  :Okey.U.c
+    F>
+  !key.w!
+    Q.y"> -%.y ' 3U.[sprite]
+    F>
+  !key.a!
+    Q.x,Q.y,0M[tank.blit] !* redraw background *!
+    Q.x"> -%.x ' 2U.[sprite]
+    F>
+  !key.s!
+    Q.x,Q.y,0M[tank.blit] !* redraw background *!
+    %.y 4U.[sprite]
+    F>
+  !key.d!
+    Q.x,Q.y,0M[tank.blit] !* redraw background *!
+    %.x 1U.[sprite]
+    F>
+  !key. !
+    !* FIXME: this also scrolls due to  *!
+    Q.x,Q.y,Q.[sprite]M[tank.shoot]
+    F>
+  !key.!
+    Q.x,Q.yM[tank.selfdestruct]
+    1;
+>
+
+Q.[caretstyle]ESSETCARETSTYLE