You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
95 lines
2.3 KiB
95 lines
2.3 KiB
#include "map.h"
|
|
|
|
#include <string.h>
|
|
|
|
#include "game.h"
|
|
#include "sdk/hardware.h"
|
|
#include "vram.h"
|
|
|
|
#define INIT_SCX ((SCRN_VX - SCRN_X) / 2)
|
|
#define INIT_SCY ((SCRN_VY - SCRN_Y) / 2)
|
|
|
|
map_t MAP;
|
|
|
|
uint8_t pending_row[SCRN_VX_B];
|
|
uint16_t pending_row_dest;
|
|
|
|
uint8_t pending_col[SCRN_VY_B];
|
|
uint16_t pending_col_dest;
|
|
|
|
static void map_write_row(uint16_t map_ptr, int8_t x0, int8_t y0);
|
|
|
|
static void map_write_col(uint16_t map_ptr, int8_t x0, int8_t y0);
|
|
|
|
void map_load(map_t *map) {
|
|
MAP = *map;
|
|
|
|
rSCX = INIT_SCX;
|
|
rSCY = INIT_SCY;
|
|
|
|
// TODO: Update player state
|
|
|
|
memcpy(VRAM_TILE_PTR(TILE_INDEX_BACKGROUND), (uint8_t *)MAP.tile_ptr,
|
|
MAP.tile_count);
|
|
|
|
int8_t x0 = MAP.camera_x - INIT_SCX;
|
|
int8_t y0 = MAP.camera_y - INIT_SCY;
|
|
uint16_t map_ptr = _SCRN0;
|
|
|
|
for (uint8_t i = 0; i < SCRN_VY_B; ++i) {
|
|
map_write_row(map_ptr, x0, y0);
|
|
map_ptr += SCRN_VX_B;
|
|
y0++;
|
|
}
|
|
}
|
|
|
|
void map_update(void) {
|
|
if (pending_row_dest != 0) {
|
|
vram_enqueue_mem_xfer((uint8_t *)pending_row_dest, &pending_row[0],
|
|
sizeof pending_row);
|
|
pending_row_dest = 0;
|
|
}
|
|
|
|
// TODO: Make it work
|
|
/* if (pending_col_dest != 0) {
|
|
vram_enqueue_mem_xfer(pending_col_dest, &pending_col[0],
|
|
sizeof pending_col);
|
|
pending_col_dest = 0;
|
|
} */
|
|
}
|
|
|
|
static void map_enqueue_row(uint16_t vram_ptr, int8_t x0, int8_t y0) {
|
|
pending_row_dest = vram_ptr;
|
|
|
|
if (y0 < 0 || y0 > MAP.map_height) {
|
|
memset(&pending_row[0], 0, sizeof pending_row);
|
|
return;
|
|
}
|
|
|
|
uint8_t *map_ptr = (uint8_t *)(MAP.map_ptr + y0 * MAP.map_width);
|
|
uint8_t left = sizeof pending_row;
|
|
uint8_t *row = &pending_row[0];
|
|
|
|
while (left > 0 && x0 < 0) {
|
|
*row++ = TILE_INDEX_BACKGROUND;
|
|
left--;
|
|
}
|
|
|
|
while (left > 0 && x0 < MAP.map_height) {
|
|
*row++ = *map_ptr++;
|
|
left--;
|
|
}
|
|
|
|
while (left > 0) {
|
|
*row++ = TILE_INDEX_BACKGROUND;
|
|
left--;
|
|
}
|
|
}
|
|
|
|
static void map_write_row(uint16_t vram_ptr, int8_t x0, int8_t y0) {
|
|
map_enqueue_row(vram_ptr, x0, y0);
|
|
memcpy((uint8_t *)pending_row_dest, &pending_row[0], sizeof pending_row);
|
|
pending_row_dest = 0;
|
|
}
|
|
|
|
static void map_write_col(uint16_t map_ptr, int8_t x0, int8_t y0) {}
|