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fix: rows are now being cleared properly and should no longer have any problems.

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This commit is contained in:
Quinn
2025-02-01 03:14:44 +01:00
parent bbd81b46c5
commit 8209aa1855
2 changed files with 28 additions and 18 deletions
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42
src/game/tetromino/placing.c
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@@ -1,7 +1,6 @@
#include "placing.h"
#include <stdint.h>
#include <stdio.h>
#include "../../window/colour.h"
#include "../game.h"
@@ -18,30 +17,39 @@ static bool is_filled(CRow row) {
return true;
}
static void clear_rows(Row* row) {
int8_t filled = 0;
static void clear_rows(Row* rows) {
Row cache[4] = {0}; // you can only clear four rows at a time
struct {
uint8_t filled : 3; // values will only ever be 0..4 (use extra bit for carry)
uint8_t checked : 3; // values will only ever be 0..4 (use extra bit for carry)
} dat = {0};
// loop through each row (excluding the empty rows at the top when clearing a line)
for (int8_t y = 0; y < (ROWS - filled); y++) {
for (int8_t y = 0; y < (ROWS - dat.filled); y++) {
const int8_t i = (ROWS - 1) - y; // get the index starting from the bottom
Row row_cache = row[i]; // cache this row address in case the row is filled
row[i] = row[i - filled]; // set the row to the new or same address
rows[i] = rows[i - dat.filled]; // set the row to the new or same address
if (!is_filled(row[i])) continue;
// continue if the line isn't filled or the max amount has been reached
if (dat.checked >= 4 || !is_filled(rows[i])) {
if (dat.filled > 0 && dat.checked < 4) dat.checked++;
continue; // continue to the next line
}
// zero out the cache
for (int8_t x = 0; x < COLUMNS; x++)
row[i][x].packed = 0;
// write the cached address to a row starting from the top
row[filled++] = row_cache;
row[i] = row[i - filled];
y--;
cache[dat.filled] = rows[i]; // cache the current row address
dat.filled++; // increase filled, and keep the row in the cache
dat.checked++; // increase the checked count
y--; // decrease y to check this line again
}
if (filled > 0)
printf("filled: %i\n", filled);
while (dat.filled > 0) {
dat.filled--;
rows[dat.filled] = cache[dat.filled];
// zero out the filled row
for (int8_t x = 0; x < COLUMNS; x++)
cache[dat.filled][x].packed = 0;
}
}
// sets a shape to the screen