Build Capital Quest for CoCo 3 with maps and emulator tests

include/map_data.h

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+extern const unsigned char national_spans[];
+extern const unsigned national_offsets[51];
+extern const unsigned char northeast_spans[];
+extern const unsigned northeast_offsets[51];
+extern const unsigned char hawaii_spans[];
+extern const unsigned hawaii_offsets[51];

include/quiz.h

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+#ifndef QUIZ_H
+#define QUIZ_H
+#define STATE_COUNT 50
+#define ANSWER_SIZE 40
+typedef unsigned char U8;
+typedef struct { const char *code; const char *name; const char *capital; } State;
+extern const State states[50];
+extern U8 order[50], options[4], question, score, corrections;
+extern U8 answered[50], correct[50], corrected[50];
+extern char responses[50][ANSWER_SIZE];
+extern unsigned random_state;
+void quiz_start(unsigned seed);
+unsigned quiz_random(unsigned bound);
+void quiz_options(U8 state);
+void normalize(const char *in, char *out);
+/* 2 exact/alias, 1 near, 0 wrong (including a different known capital). */
+U8 classify(U8 state, const char *answer);
+void quiz_record(U8 state, const char *answer, U8 right, U8 spelling);
+#endif

include/ui.h

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+#ifndef UI_H
+#define UI_H
+#include "quiz.h"
+void text(unsigned x,unsigned y,const char *s,U8 color);
+void frame(const char *label);
+void show_map(U8 state);
+U8 next_key(void);
+void release_keys(void);
+void close_input(void);
+extern unsigned entropy;
+#endif