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Aggiunto README e aggiornati file del progetto

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This commit is contained in:
Matteo Benedetto
2026-06-22 18:50:25 +02:00
parent 20a5d8604b
commit 991afd1749
4 changed files with 143 additions and 17 deletions
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engine.c
+60 -12
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@@ -16,10 +16,17 @@ static uint8_t map_buffer[32 * 32];
uint8_t player_lx = 1;
uint8_t player_ly = 1;
uint8_t player_dir = 0; // 0=DR, 1=DL, 2=UL, 3=UR
uint8_t walk_timer = 0;
uint8_t scroll_x = 0;
uint8_t scroll_y = 0;
// Movement transition variables
uint8_t is_moving = 0;
uint8_t move_progress = 0;
int8_t start_lx, start_ly;
int8_t target_lx, target_ly;
int16_t start_px, start_py;
int16_t target_px, target_py;
// DAS variables
uint8_t das_timer = 0;
uint8_t das_active = 0;
@@ -143,7 +150,7 @@ static void update_camera(void) {
}
static void update_player_sprite(void) {
uint8_t frame_offset = (walk_timer > 0) ? ((walk_timer >> 2) & 1) : 0;
uint8_t frame_offset = is_moving ? ((move_progress >> 2) & 1) : 0;
move_metasprite(player_metasprites[player_dir * 2 + frame_offset], 0, 0, 88, 88);
}
@@ -174,16 +181,40 @@ void engine_init(void) {
}
void engine_update(uint8_t keys, uint8_t prev_keys) {
if (walk_timer > 0) {
walk_timer--;
if (is_moving) {
move_progress++;
// Interpolate camera position
int16_t px = start_px + (((target_px - start_px) * (int16_t)move_progress) >> 4);
int16_t py = start_py + (((target_py - start_py) * (int16_t)move_progress) >> 4);
scroll_x = px - 64;
scroll_y = py - 72;
move_bkg(scroll_x, scroll_y);
// Update walk animation frame (alternate frame every 4 ticks)
update_player_sprite();
if (move_progress == 16) {
is_moving = 0;
player_lx = target_lx;
player_ly = target_ly;
// Final snap to target position to avoid any rounding errors
int16_t final_px = (player_lx - player_ly) * 16 + 96;
int16_t final_py = (player_lx + player_ly) * 8 + 16;
scroll_x = final_px - 64;
scroll_y = final_py - 72;
move_bkg(scroll_x, scroll_y);
// Set player to idle stand frame
update_player_sprite();
}
return; // Ignore other inputs while moving
}
uint8_t keys_pressed = keys & ~prev_keys;
int8_t move_lx = 0;
int8_t move_ly = 0;
if (keys_pressed) {
das_timer = DAS_DELAY;
das_active = 1;
@@ -197,6 +228,9 @@ void engine_update(uint8_t keys, uint8_t prev_keys) {
das_active = 0;
}
int8_t move_lx = 0;
int8_t move_ly = 0;
if (keys_pressed & J_RIGHT) {
move_lx = 1; player_dir = 0; // DR
} else if (keys_pressed & J_LEFT) {
@@ -214,12 +248,26 @@ void engine_update(uint8_t keys, uint8_t prev_keys) {
// Bounds check & wall/empty area collision check
if (new_lx >= 0 && new_lx < MAP_SIZE && new_ly >= 0 && new_ly < MAP_SIZE) {
if (maze[new_ly][new_lx] == 1) {
player_lx = new_lx;
player_ly = new_ly;
walk_timer = 12; // 12 frames of walk cycle
is_moving = 1;
move_progress = 0;
start_lx = player_lx;
start_ly = player_ly;
target_lx = new_lx;
target_ly = new_ly;
start_px = (start_lx - start_ly) * 16 + 96;
start_py = (start_lx + start_ly) * 8 + 16;
target_px = (target_lx - target_ly) * 16 + 96;
target_py = (target_lx + target_ly) * 8 + 16;
update_player_sprite();
} else {
// If collision blocks, just update direction look frame
update_player_sprite();
}
} else {
// Out of bounds: update direction look frame
update_player_sprite();
}
update_player_sprite();
update_camera();
}
}