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Add extra check in crushing function 

Changelog:
- Extra check to avoid just fringing the player bbox edges.
  Crushing requires actual overlap on at least one of the edges.
scene_man
En Yi 2023-06-23 22:12:20 +08:00
parent 7a670f85fc
commit 491f0bcbef
1 changed files with 76 additions and 3 deletions
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79
scenes/game_systems.c
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@ -716,10 +716,83 @@ void player_crushing_system(Scene_t* scene)
p_ctransform->position, p_ctransform->prev_position, p_bbox->size, true
);
if ((edges & 0b1100) == 0b1100 || (edges & 0b0011) == 0b0011)
// There is a second check for to ensure that there is an solid entity/tile overlapping the player bbox
// This is to prevent crushing by perfectly fitting in a gap (imagine a size 32 player in between two tiles)
// or any scenario where the edge check is just fringing, not overlapping
if ((edges & 0b0011) == 0b0011)
{
p_player->m_alive = false;
return;
uint8_t collide = 0;
CollideEntity_t ent =
{
.p_ent = p_player,
.bbox = (Rectangle){p_ctransform->position.x, p_ctransform->position.y, p_bbox->size.x, 1},
.prev_bbox = (Rectangle){p_ctransform->position.x, p_ctransform->position.y, p_bbox->size.x, p_bbox->size.y},
.area = (TileArea_t){
.tile_x1 = (p_ctransform->position.x) / TILE_SIZE,
.tile_y1 = (p_ctransform->position.y) / TILE_SIZE,
.tile_x2 = (p_ctransform->position.x + p_bbox->size.x - 1) / TILE_SIZE,
.tile_y2 = (p_ctransform->position.y + p_bbox->size.y - 1) / TILE_SIZE,
}
};
uint8_t collide_type = check_collision_line(&ent, &data->tilemap, false);
if (collide_type == 1)
{
collide |= 1 << 1;
}
ent.bbox.y = p_ctransform->position.y + p_bbox->size.y;
collide_type = check_collision_line(&ent, &data->tilemap, true);
if (collide_type == 1)
{
collide |= 1;
}
if (collide != 0)
{
p_player->m_alive = false;
return;
}
}
if ((edges & 0b1100) == 0b1100)
{
uint8_t collide = 0;
CollideEntity_t ent =
{
.p_ent = p_player,
.bbox = (Rectangle){p_ctransform->position.x, p_ctransform->position.y, 1, p_bbox->size.y},
.prev_bbox = (Rectangle){p_ctransform->position.x, p_ctransform->position.y, p_bbox->size.x, p_bbox->size.y},
.area = (TileArea_t){
.tile_x1 = (p_ctransform->position.x) / TILE_SIZE,
.tile_y1 = (p_ctransform->position.y) / TILE_SIZE,
.tile_x2 = (p_ctransform->position.x + p_bbox->size.x - 1) / TILE_SIZE,
.tile_y2 = (p_ctransform->position.y + p_bbox->size.y - 1) / TILE_SIZE,
}
};
// Left
uint8_t collide_type = check_collision_line(&ent, &data->tilemap, false);
if (collide_type == 1)
{
collide |= 1 << 1;
}
//Right
ent.bbox.x = p_ctransform->position.x + p_bbox->size.x; // 2 to account for the previous subtraction
collide_type = check_collision_line(&ent, &data->tilemap, false);
if (collide_type == 1)
{
collide |= 1;
}
if (collide != 0)
{
p_player->m_alive = false;
return;
}
}
}
}