[Maintenance] [th02] Score: Consolidate rendering functions

Part of P0278, funded by Yanga.

th02/gaiji/score_p.hpp

@@ -0,0 +1,87 @@
+// ZUN bloat: The divisor can never be 0. This separate function is just meant
+// to work around the resulting `Condition is always true/false` and
+// `Unreachable code` warnings.
+#ifndef gaiji_score_put
+	inline score_t gaiji_score_divide(
+		const score_t& score, const score_t& divisor, bool check_divisor
+	) {
+		if(check_divisor) {
+			return (divisor ? ((score / divisor) % 10) : (score % 10));
+		} else {
+			return ((score / divisor) % 10);
+		}
+	}
+#endif
+
+#define gaiji_score_put_update( \
+	gaiji, past_leading_zeroes, divisor, digit, score, check_divisor \
+) { \
+	digit = gaiji_score_divide(score, divisor, check_divisor); \
+	divisor /= 10; \
+	gaiji = (gb_0_ + digit); \
+	if(digit) { \
+		past_leading_zeroes = true; \
+	} \
+}
+
+#define gaiji_score_put(score, on_digit, check_divisor) { \
+	/* ZUN bloat: Initialized inside the loop. */ \
+	int gaiji = gb_0_; /* ACTUAL TYPE: gaiji_th02_t */ \
+	\
+	score_t divisor = 10000000; /* Must match SCORE_DIGITS! */ \
+	score_t digit; \
+	bool past_leading_zeroes = false; \
+	for(int i = 0; i < SCORE_DIGITS; i++) { \
+		gaiji_score_put_update( \
+			gaiji, past_leading_zeroes, divisor, digit, score, check_divisor \
+		); \
+		if(past_leading_zeroes) { \
+			on_digit(i, gaiji); \
+		} \
+	} \
+}
+
+// ZUN bloat: Could have been merged into the function above.
+#define gaiji_score_put_digits(score, digits, on_digit) { \
+	int i; \
+	\
+	/* ZUN bloat: Initialized inside the loop. */ \
+	int gaiji = gb_0_; /* ACTUAL TYPE: gaiji_th02_t */ \
+	\
+	score_t divisor = 10000000; /* Must match SCORE_DIGITS! */ \
+	score_t digit; \
+	bool past_leading_zeroes = false; \
+	\
+	for(i = SCORE_DIGITS; i > digits; i--) { \
+		divisor /= 10; \
+	} \
+	for(i = 0; i < digits; i++) { \
+		gaiji_score_put_update( \
+			gaiji, past_leading_zeroes, divisor, digit, score, false \
+		); \
+		if(i == (digits - 1)) { \
+			past_leading_zeroes = true; \
+		} \
+		if(past_leading_zeroes) { \
+			on_digit(i, gaiji); \
+		} \
+	} \
+}
+
+// ZUN bloat: Also equivalent to the first function.
+#define gaiji_score_put_to(left, score, on_digit_at) { \
+	int gaiji; /* ACTUAL TYPE: gaiji_th02_t */ \
+	score_t divisor = 10000000; /* Must match SCORE_DIGITS! */ \
+	score_t digit; \
+	bool past_leading_zeroes = false; \
+	tram_x_t x = left; \
+	while(x < (left + (SCORE_DIGITS * GAIJI_TRAM_W))) { \
+		gaiji_score_put_update( \
+			gaiji, past_leading_zeroes, divisor, digit, score, false \
+		); \
+		if(past_leading_zeroes) { \
+			on_digit_at(x, gaiji); \
+		} \
+		x += GAIJI_TRAM_W; \
+	} \
+}

th02/main/hud/overlay.cpp

@@ -3,41 +3,21 @@
 #include "platform.h"
 #include "pc98.h"
 #include "master.hpp"
+#include "th02/score.h"
 #include "th02/gaiji/gaiji.h"
+#include "th02/gaiji/score_p.hpp"
 #include "th02/main/playfld.hpp"
 #include "th02/main/hud/overlay.hpp"
 
 void pascal near overlay_uint_put(
 	tram_x_t left, tram_y_t y, int digits, long val
 )
 {
-	enum {
-		DIGITS_MAX = 8,
-	};
-
-	int i;
-	int gaiji = gb_0_; // ACTUAL TYPE: gaiji_th02_t
-	long divisor = 10000000; // Must match DIGITS_MAX!
-	long digit;
-	bool past_leading_zeroes = false;
-
-	for(i = DIGITS_MAX; i > digits; i--) {
-		divisor /= 10;
-	}
-	for(i = 0; i < digits; i++) {
-		digit = ((val / divisor) % 10);
-		divisor /= 10;
-		gaiji = (digit + gb_0_);
-		if(digit != 0) {
-			past_leading_zeroes = true;
-		}
-		if(i == (digits - 1)) {
-			past_leading_zeroes = true;
-		}
-		if(past_leading_zeroes) {
-			gaiji_putca((left + (i * GAIJI_TRAM_W)), y, gaiji, TX_WHITE);
-		}
+	#define on_digit(i, gaiji) { \
+		gaiji_putca((left + (i * GAIJI_TRAM_W)), y, gaiji, TX_WHITE); \
 	}
+	gaiji_score_put_digits(val, digits, on_digit);
+	#undef on_digit
 }
 
 void overlay_wipe(void)

th02/maine_04.cpp

@@ -14,6 +14,7 @@
 #include "th02/hardware/input.hpp"
 #include "th02/core/globals.hpp"
 #include "th02/gaiji/gaiji.h"
+#include "th02/gaiji/score_p.hpp"
 #include "th02/formats/scoredat.hpp"
 
 #include "th02/score.c"
@@ -51,25 +52,13 @@ inline void scoredat_init() {
 	}
 }
 
-// Slightly differs from the same function in OP.EXE!
 void pascal score_put(tram_y_t y, score_t score, tram_atrb2 atrb)
 {
-	tram_x_t x;
-	int digit;
-	score_t divisor = 10000000;
-	score_t result;
-	char putting = 0;
-	for(x = 26; x < 26 + (8 * 2); x += 2) {
-		result = (score / divisor) % 10;
-		divisor /= 10;
-		digit = result + gb_0_;
-		if(result) {
-			putting = 1;
-		}
-		if(putting) {
-			gaiji_putca(x, y, digit, atrb);
-		}
+	#define on_digit_at(x, gaiji) { \
+		gaiji_putca(x, y, gaiji, atrb); \
 	}
+	gaiji_score_put_to(26, score, on_digit_at);
+	#undef on_digit_at
 }
 
 #define ALPHABET_PUTCA(col, row, atrb) \

th02/op_04.cpp

@@ -17,6 +17,7 @@
 #include "th02/core/globals.hpp"
 #include "th02/formats/scoredat.hpp"
 #include "th02/gaiji/gaiji.h"
+#include "th02/gaiji/score_p.hpp"
 #include "th02/op/op.h"
 
 #include "th02/score.c"
@@ -40,25 +41,13 @@ unsigned int score_duration;
 
 #include "th02/scorelod.c"
 
-// Slightly differs from the same function in MAINE.EXE!
-void pascal near score_put(unsigned y, score_t score, tram_atrb2 atrb)
+void pascal near score_put(tram_y_t y, score_t score, tram_atrb2 atrb)
 {
-	unsigned digit = gb_0_;
-	score_t divisor = 10000000;
-	score_t result;
-	char putting = 0;
-	int i;
-	for(i = 0; i < 8; i++) {
-		result = divisor ? ((score / divisor) % 10) : (score % 10);
-		divisor /= 10;
-		digit = result + gb_0_;
-		if(result) {
-			putting = 1;
-		}
-		if(putting) {
-			gaiji_putca((i * 2) + 26, y, digit, atrb);
-		}
+	#define on_digit(i, gaiji) { \
+		gaiji_putca((26 + (i * GAIJI_TRAM_W)), y, gaiji, atrb); \
 	}
+	gaiji_score_put(score, on_digit, true);
+	#undef on_digit
 }
 
 void pascal near shottype_put(tram_y_t y, int type, tram_atrb2 atrb)