X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=src%2Fscoredb.c;fp=src%2Fscoredb.c;h=28f88dced13fd6bafea618a9cedccef7a5e3d455;hb=cc06c5626706cf48e6e4dfa252c30af202a5030c;hp=0000000000000000000000000000000000000000;hpb=77eea907b4ba007632e37588b6cd7eb66c9eab07;p=gbajam22

diff --git a/src/scoredb.c b/src/scoredb.c
new file mode 100644
index 0000000..28f88dc
--- /dev/null
+++ b/src/scoredb.c
@@ -0,0 +1,110 @@
+/*
+Score-keeping for GBA with SRAM cartridge (originally part of gbatris)
+Copyright (C) 2019-2022  John Tsiombikas <nuclear@member.fsf.org>
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*/
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "scoredb.h"
+#include "debug.h"
+#include "gbaregs.h"
+
+#define MAGIC "VOXBURG1"
+#define SCORE_OFFS	8
+
+
+#define read_sram(offs, buf, sz) \
+	sramcpy(buf, (unsigned char*)SRAM_ADDR + (offs), sz)
+#define write_sram(offs, buf, sz) \
+	sramcpy((unsigned char*)SRAM_ADDR + (offs), buf, sz)
+
+static void sramcpy(void *dst, void *src, int size);
+
+int last_score_rank = -1;
+
+int load_scores(void)
+{
+	int i;
+	char magic[8];
+
+	read_sram(0, magic, 8);
+	if(memcmp(magic, MAGIC, sizeof magic) != 0) {
+		for(i=0; i<10; i++) {
+			memcpy(scores[i].name, "----", NAME_SIZE + 1);
+		}
+		/* scores[10] keeps the last entered name. initialize it empty */
+		scores[10].name[0] = 0;
+		return -1;
+	}
+
+	read_sram(SCORE_OFFS, scores, sizeof scores);
+	return 0;
+}
+
+void save_scores(void)
+{
+	write_sram(0, MAGIC, 8);
+	write_sram(SCORE_OFFS, scores, sizeof scores);
+}
+
+void save_score(char *name, int score, int time, int level)
+{
+	int i, rank = -1;
+
+	if(!score) {
+		last_score_rank = -1;
+		return;
+	}
+
+	for(i=0; i<10; i++) {
+		if(scores[i].score <= score) {
+			rank = i;
+			break;
+		}
+	}
+	last_score_rank = rank;
+
+	if(rank == -1) return;
+
+	memmove(scores + rank + 1, scores + rank, (9 - rank) * sizeof(struct score_entry));
+
+	if(strlen(name) > NAME_SIZE) {
+		name[NAME_SIZE] = 0;
+	}
+	sprintf(scores[rank].name, "%s", name);
+	scores[rank].score = score;
+	scores[rank].time = time;
+	scores[rank].level = level;
+
+	/* also copy to the last entered name slot */
+	scores[10] = scores[rank];
+
+	save_scores();
+}
+
+int is_highscore(int score)
+{
+	return scores[9].score <= score;
+}
+
+static void sramcpy(void *dst, void *src, int size)
+{
+	unsigned char *sptr = src;
+	unsigned char *dptr = dst;
+	while(size-- > 0) {
+		*dptr++ = *sptr++;
+	}
+}