Tidy up of tabbing, addition of key scanning (and ability to skip intro)

Makefile,fe1

@@ -7,8 +7,8 @@ Linkflags = -aif -o $@
 
 
 # Final targets:
-@.!RunImage:   @.o.CTheEscape @.o.Graphics @.o.Sound C:o.stubs 
-        Link $(Linkflags) @.o.CTheEscape @.o.Graphics @.o.Sound C:o.stubs 
+@.!RunImage:   @.o.CTheEscape @.o.Graphics @.o.Sound @.o.Input C:o.stubs 
+        Link $(Linkflags) @.o.CTheEscape @.o.Graphics @.o.Sound @.o.Input C:o.stubs 
 
 
 # User-editable dependencies:
@@ -21,7 +21,8 @@ Linkflags = -aif -o $@
         cc $(ccflags) -o @.o.Graphics @.c.Graphics
 @.o.Sound:   @.c.Sound
         cc $(ccflags) -o @.o.Sound @.c.Sound
-
+@.o.Input:   @.c.Input
+        cc $(ccflags) -o @.o.Input @.c.Input
 
 # Dynamic dependencies:
 o.Graphics:	c.Graphics
@@ -38,8 +39,11 @@ o.CTheEscape:	C:h.swis
 o.CTheEscape:	C:h.kernel
 o.CTheEscape:	C:h.kernel
 o.CTheEscape:	h.Sound
-o.CTheEscape:	c.CTheEscape
-o.CTheEscape:	C:h.swis
-o.CTheEscape:	C:h.kernel
-o.CTheEscape:	C:h.kernel
-o.CTheEscape:	h.Sound
+o.Input:	c.Input
+o.Input:	C:h.swis
+o.Input:	C:h.kernel
+o.Input:	C:h.kernel
+o.Input:	c.Input
+o.Input:	C:h.swis
+o.Input:	C:h.kernel
+o.Input:	C:h.kernel

c/CTheEscape

@@ -78,11 +78,15 @@ void intro()
   currentstart += 100;
   
   draw_sprite("tng",320,400);
-  printf("%i elements at %i bytes\n",current_element,sizeof(composition[0]));
   sound_composition_start(clock());
   
   while(sound_composition_incomplete())
+  {
     sound_composition_tick(clock());
+
+    if(input_readkey(98))
+      sound_composition_stop();
+  }
 }
 
 int main(int argc, char *argv[])

c/Input

@@ -0,0 +1,20 @@
+#include <stdio.h>
+#include "swis.h"
+#include <kernel.h>
+
+// SWI Registers
+extern _kernel_swi_regs inreg;
+extern _kernel_swi_regs outreg;
+
+int input_readkey(int key)
+{
+    inreg.r[0] = 129;
+    inreg.r[1] = key ^ 255;
+    inreg.r[2] = 255;
+    _kernel_swi(OS_Byte,&inreg,&outreg);
+    
+    if(outreg.r[1] == 255)
+      return 1;
+      
+    return 0;
+}

c/Sound

@@ -86,6 +86,8 @@ void sound_composition_debug()
     }
   }
   
+  printf("%i elements at %i bytes each\n",current_element,sizeof(composition[0]));
+
   printf("------------------------------\n");
 }
 
@@ -94,6 +96,11 @@ void sound_composition_start(int cent)
   composition_startcent = cent;
 }
 
+void sound_composition_stop()
+{
+  current_playback_element = COMPOSITION_MAX;
+}
+
 void sound_composition_tick(int cents)
 {
   int offset_cents = cents - composition_startcent;