void FixedUpdate()
{
if (m_Center != null && m_Projector != null)
{
int gridX = Mathf.FloorToInt(m_Center.position.x * 2);
int gridZ = Mathf.FloorToInt(m_Center.position.z * 2);
// 0.5s 刷新一次
if ((gridX != m_OldgridX || gridZ != m_OldgridZ) || (Time.fixedTime - m_LastUpdateTime > 0.2f))
{
m_OldgridX = gridX;
m_OldgridZ = gridZ;
m_LastUpdateTime = Time.fixedTime;
/* Cause libfov to mark lit cells using the two callbacks given:
* - opaque, which is used to determine information about your
* map (a query you can define), and
* - apply, which is used to modify your map once libfov
* determines that a particular cell is lit (a command you can
* define).
*
* In this call, the light source is at (pX,pY).
*/
if (ViewBeam)
{
float angle_n = Vector2.Angle(new Vector2(m_Center.forward.x, m_Center.forward.z), Vector2.up);
float angle_e = Vector2.Angle(new Vector2(m_Center.forward.x, m_Center.forward.z), Vector2.right);
float angle_w = Vector2.Angle(new Vector2(m_Center.forward.x, m_Center.forward.z), Vector2.left);
float angle_s = Vector2.Angle(new Vector2(m_Center.forward.x, m_Center.forward.z), Vector2.down);
float angle_ne = Vector2.Angle(new Vector2(m_Center.forward.x, m_Center.forward.z), new Vector2(1, 1));
float angle_se = Vector2.Angle(new Vector2(m_Center.forward.x, m_Center.forward.z), new Vector2(1, -1));
float angle_sw = Vector2.Angle(new Vector2(m_Center.forward.x, m_Center.forward.z), new Vector2(-1, -1));
float angle_nw = Vector2.Angle(new Vector2(m_Center.forward.x, m_Center.forward.z), new Vector2(-1, 1));
if (angle_s <= 22.5f)
{
ViewBeamDirection = fov_direction_type.FOV_NORTH;
}
else if (angle_e <= 22.5f)
{
ViewBeamDirection = fov_direction_type.FOV_EAST;
}
else if (angle_w <= 22.5f)
{
ViewBeamDirection = fov_direction_type.FOV_WEST;
}
else if (angle_n <= 22.5f)
{
ViewBeamDirection = fov_direction_type.FOV_SOUTH;
}
else if (angle_se <= 22.5f)
{
ViewBeamDirection = fov_direction_type.FOV_NORTHEAST;
}
else if (angle_ne <= 22.5f)
{
ViewBeamDirection = fov_direction_type.FOV_SOUTHEAST;
}
else if (angle_nw <= 22.5f)
{
ViewBeamDirection = fov_direction_type.FOV_SOUTHWEST;
}
else if (angle_sw <= 22.5f)
{
ViewBeamDirection = fov_direction_type.FOV_NORTHWEST;
}
m_BlockFov.fov_beam(fov_settings, m_BlockMap, Color.white, m_OldgridX, m_OldgridZ, ViewRadius, ViewBeamDirection, ViewBeamAngle);
}
else
{
m_BlockFov.fov_circle(fov_settings, m_BlockMap, Color.white, m_OldgridX, m_OldgridZ, ViewRadius);
}
for (int y = 0; y < m_TexHeight; ++y)
{
for (int x = 0; x < m_TexWidth; ++x)
{
if (m_BlockMap.isSeen(x, y))
{
m_TexColor[x + y * m_TexWidth] = new Color32(255, m_TexColor[x + y * m_TexWidth].r, 255, 255);
}
else if (m_BlockMap.isRemembered(x, y))
{
m_TexColor[x + y * m_TexWidth] = new Color32(DarkFogGray, m_TexColor[x + y * m_TexWidth].r, DarkFogGray, 255);
}
else
{
m_TexColor[x + y * m_TexWidth] = new Color32(0, m_TexColor[x + y * m_TexWidth].r, 0, 255);
}
m_BlockMap.setUnSeen(x, y);
}
}
m_TexColor[gridX + gridZ * m_TexWidth] = new Color32(255, 255, 255, 255);
m_MaskTex.SetPixels32(m_TexColor);
m_MaskTex.Apply();
m_Projector.material.SetFloat("_StartTime", Time.timeSinceLevelLoad);
}
}
}
/**
* Calculate a field of view from source at (x,y), pointing
* in the given direction and with the given angle. The larger
* the angle, the wider, "less focused" the beam. Each side of the
* line pointing in the direction from the source will be half the
* angle given such that the angle specified will be represented on
* the raster.
*
* \param settings data structure containing settings.
* \param map map data structure to be passed to callbacks.
* \param source data structure holding source of light.
* \param source_x x-axis coordinate from which to start.
* \param source_y y-axis coordinate from which to start.
* \param radius Euclidean distance from (x,y) after which to stop.
* \param direction One of eight directions the beam of light can point.
* \param angle The angle at the base of the beam of light, in degrees.
*/
public void fov_beam(fov_settings_type settings, map _map, Color source, int source_x, int source_y,
uint radius, fov_direction_type direction, float angle)
{
fov_private_data_type data = new fov_private_data_type();
float start_slope, end_slope, a;
data.settings = settings;
data._map = _map;
data.source = source;
data.source_x = source_x;
data.source_y = source_y;
data.radius = radius;
if (angle <= 0.0f)
{
return;
}
else if (angle >= 360.0f)
{
_fov_circle(data);
}
/* Calculate the angle as a percentage of 45 degrees, halved (for
* each side of the centre of the beam). e.g. angle = 180.0f means
* half the beam is 90.0 which is 2x45, so the result is 2.0.
*/
a = angle / 90.0f;
if (direction == fov_direction_type.FOV_EAST)
{
end_slope = betweenf(a, 0.0f, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_PPN, data, 1, 0.0f, end_slope);
_fov_octant_part(fov_octants_part.FOV_OCTANT_PMN, data, 1, 0.0f, end_slope);
if (a - 1.0f > Mathf.Epsilon)
{ /* a > 1.0f */
start_slope = betweenf(2.0f - a, 0.0f, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_PPY, data, 1, start_slope, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_MPY, data, 1, start_slope, 1.0f);
}
if (a - 2.0f > Mathf.Epsilon)
{ /* a > 2.0f */
end_slope = betweenf(a - 2.0f, 0.0f, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_PMY, data, 1, 0.0f, end_slope);
_fov_octant_part(fov_octants_part.FOV_OCTANT_MMY, data, 1, 0.0f, end_slope);
}
if (a - 3.0f > Mathf.Epsilon)
{ /* a > 3.0f */
start_slope = betweenf(4.0f - a, 0.0f, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_MPN, data, 1, start_slope, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_MMN, data, 1, start_slope, 1.0f);
}
}
if (direction == fov_direction_type.FOV_WEST)
{
end_slope = betweenf(a, 0.0f, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_MPN, data, 1, 0.0f, end_slope);
_fov_octant_part(fov_octants_part.FOV_OCTANT_MMN, data, 1, 0.0f, end_slope);
if (a - 1.0f > Mathf.Epsilon)
{ /* a > 1.0f */
start_slope = betweenf(2.0f - a, 0.0f, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_PMY, data, 1, start_slope, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_MMY, data, 1, start_slope, 1.0f);
}
if (a - 2.0f > Mathf.Epsilon)
{ /* a > 2.0f */
end_slope = betweenf(a - 2.0f, 0.0f, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_PPY, data, 1, 0.0f, end_slope);
_fov_octant_part(fov_octants_part.FOV_OCTANT_MPY, data, 1, 0.0f, end_slope);
}
if (a - 3.0f > Mathf.Epsilon)
{ /* a > 3.0f */
start_slope = betweenf(4.0f - a, 0.0f, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_PPN, data, 1, start_slope, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_PMN, data, 1, start_slope, 1.0f);
}
}
if (direction == fov_direction_type.FOV_NORTH)
{
end_slope = betweenf(a, 0.0f, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_MPY, data, 1, 0.0f, end_slope);
_fov_octant_part(fov_octants_part.FOV_OCTANT_MMY, data, 1, 0.0f, end_slope);
if (a - 1.0f > Mathf.Epsilon)
{ /* a > 1.0f */
start_slope = betweenf(2.0f - a, 0.0f, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_MMN, data, 1, start_slope, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_PMN, data, 1, start_slope, 1.0f);
}
if (a - 2.0f > Mathf.Epsilon)
{ /* a > 2.0f */
end_slope = betweenf(a - 2.0f, 0.0f, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_MPN, data, 1, 0.0f, end_slope);
_fov_octant_part(fov_octants_part.FOV_OCTANT_PPN, data, 1, 0.0f, end_slope);
}
if (a - 3.0f > Mathf.Epsilon)
{ /* a > 3.0f */
start_slope = betweenf(4.0f - a, 0.0f, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_PMY, data, 1, start_slope, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_PPY, data, 1, start_slope, 1.0f);
}
}
if (direction == fov_direction_type.FOV_SOUTH)
{
end_slope = betweenf(a, 0.0f, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_PMY, data, 1, 0.0f, end_slope);
_fov_octant_part(fov_octants_part.FOV_OCTANT_PPY, data, 1, 0.0f, end_slope);
if (a - 1.0f > Mathf.Epsilon)
{ /* a > 1.0f */
start_slope = betweenf(2.0f - a, 0.0f, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_MPN, data, 1, start_slope, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_PPN, data, 1, start_slope, 1.0f);
}
if (a - 2.0f > Mathf.Epsilon)
{ /* a > 2.0f */
end_slope = betweenf(a - 2.0f, 0.0f, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_MMN, data, 1, 0.0f, end_slope);
_fov_octant_part(fov_octants_part.FOV_OCTANT_PMN, data, 1, 0.0f, end_slope);
}
if (a - 3.0f > Mathf.Epsilon)
{ /* a > 3.0f */
start_slope = betweenf(4.0f - a, 0.0f, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_MMY, data, 1, start_slope, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_MPY, data, 1, start_slope, 1.0f);
}
}
if (direction == fov_direction_type.FOV_NORTHEAST)
{
start_slope = betweenf(1.0f - a, 0.0f, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_PMN, data, 1, start_slope, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_MPY, data, 1, start_slope, 1.0f);
if (a - 1.0f > Mathf.Epsilon)
{ /* a > 1.0f */
end_slope = betweenf(a - 1.0f, 0.0f, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_MMY, data, 1, 0.0f, end_slope);
_fov_octant_part(fov_octants_part.FOV_OCTANT_PPN, data, 1, 0.0f, end_slope);
}
if (a - 2.0f > Mathf.Epsilon)
{ /* a > 2.0f */
start_slope = betweenf(3.0f - a, 0.0f, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_MMN, data, 1, start_slope, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_PPY, data, 1, start_slope, 1.0f);
}
if (a - 3.0f > Mathf.Epsilon)
{ /* a > 3.0f */
end_slope = betweenf(a - 3.0f, 0.0f, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_MPN, data, 1, 0.0f, end_slope);
_fov_octant_part(fov_octants_part.FOV_OCTANT_PMY, data, 1, 0.0f, end_slope);
}
}
if (direction == fov_direction_type.FOV_NORTHWEST)
{
start_slope = betweenf(1.0f - a, 0.0f, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_MMN, data, 1, start_slope, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_MMY, data, 1, start_slope, 1.0f);
if (a - 1.0f > Mathf.Epsilon)
{ /* a > 1.0f */
end_slope = betweenf(a - 1.0f, 0.0f, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_MPN, data, 1, 0.0f, end_slope);
_fov_octant_part(fov_octants_part.FOV_OCTANT_MPY, data, 1, 0.0f, end_slope);
}
if (a - 2.0f > Mathf.Epsilon)
{ /* a > 2.0f */
start_slope = betweenf(3.0f - a, 0.0f, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_PMY, data, 1, start_slope, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_PMN, data, 1, start_slope, 1.0f);
}
if (a - 3.0f > Mathf.Epsilon)
{ /* a > 3.0f */
end_slope = betweenf(a - 3.0f, 0.0f, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_PPY, data, 1, 0.0f, end_slope);
_fov_octant_part(fov_octants_part.FOV_OCTANT_PPN, data, 1, 0.0f, end_slope);
}
}
if (direction == fov_direction_type.FOV_SOUTHEAST)
{
start_slope = betweenf(1.0f - a, 0.0f, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_PPN, data, 1, start_slope, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_PPY, data, 1, start_slope, 1.0f);
if (a - 1.0f > Mathf.Epsilon)
{ /* a > 1.0f */
end_slope = betweenf(a - 1.0f, 0.0f, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_PMY, data, 1, 0.0f, end_slope);
_fov_octant_part(fov_octants_part.FOV_OCTANT_PMN, data, 1, 0.0f, end_slope);
}
if (a - 2.0f > Mathf.Epsilon)
{ /* a > 2.0f */
start_slope = betweenf(3.0f - a, 0.0f, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_MPN, data, 1, start_slope, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_MPY, data, 1, start_slope, 1.0f);
}
if (a - 3.0f > Mathf.Epsilon)
{ /* a > 3.0f */
end_slope = betweenf(a - 3.0f, 0.0f, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_MMN, data, 1, 0.0f, end_slope);
_fov_octant_part(fov_octants_part.FOV_OCTANT_MMY, data, 1, 0.0f, end_slope);
}
}
if (direction == fov_direction_type.FOV_SOUTHWEST)
{
start_slope = betweenf(1.0f - a, 0.0f, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_PMY, data, 1, start_slope, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_MPN, data, 1, start_slope, 1.0f);
if (a - 1.0f > Mathf.Epsilon)
{ /* a > 1.0f */
end_slope = betweenf(a - 1.0f, 0.0f, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_PPY, data, 1, 0.0f, end_slope);
_fov_octant_part(fov_octants_part.FOV_OCTANT_MMN, data, 1, 0.0f, end_slope);
}
if (a - 2.0f > Mathf.Epsilon)
{ /* a > 2.0f */
start_slope = betweenf(3.0f - a, 0.0f, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_PPN, data, 1, start_slope, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_MMY, data, 1, start_slope, 1.0f);
}
if (a - 3.0f > Mathf.Epsilon)
{ /* a > 3.0f */
end_slope = betweenf(a - 3.0f, 0.0f, 1.0f);
_fov_octant_part(fov_octants_part.FOV_OCTANT_PMN, data, 1, 0.0f, end_slope);
_fov_octant_part(fov_octants_part.FOV_OCTANT_MPY, data, 1, 0.0f, end_slope);
}
}
}
