static void
edge_lines_draw(void *data, RenderState *state, PyObject *src, PyObject *mask, PyObject *mask_light) {
PrimitiveEdgeLines *self = (PrimitiveEdgeLines *)data;
/* Draw some edge lines! */
if (state->block == 44 || state->block == 78 || !is_transparent(state->block)) {
Imaging img_i = imaging_python_to_c(state->img);
unsigned char ink[] = {0, 0, 0, 255 * self->opacity};
unsigned short side_block;
int x = state->x, y = state->y, z = state->z;
int increment=0;
if (state->block == 44 && ((state->block_data & 0x8) == 0 )) // half-step BUT no upsidown half-step
increment=6;
else if ((state->block == 78) || (state->block == 93) || (state->block == 94)) // snow, redstone repeaters (on and off)
increment=9;
/* +X side */
side_block = get_data(state, BLOCKS, x+1, y, z);
if (side_block != state->block && (is_transparent(side_block) || render_mode_hidden(state->rendermode, x+1, y, z))) {
ImagingDrawLine(img_i, state->imgx+12, state->imgy+1+increment, state->imgx+22+1, state->imgy+5+1+increment, &ink, 1);
ImagingDrawLine(img_i, state->imgx+12, state->imgy+increment, state->imgx+22+1, state->imgy+5+increment, &ink, 1);
}
/* -Z side */
side_block = get_data(state, BLOCKS, x, y, z-1);
if (side_block != state->block && (is_transparent(side_block) || render_mode_hidden(state->rendermode, x, y, z-1))) {
ImagingDrawLine(img_i, state->imgx, state->imgy+6+1+increment, state->imgx+12+1, state->imgy+1+increment, &ink, 1);
ImagingDrawLine(img_i, state->imgx, state->imgy+6+increment, state->imgx+12+1, state->imgy+increment, &ink, 1);
}
}
}
static int
rendermode_overlay_occluded(void *data, RenderState *state) {
int x = state->x, y = state->y, z = state->z;
if ( (x != 0) && (y != 15) && (z != 127) &&
!is_transparent(getArrayByte3D(state->blocks, x-1, y, z)) &&
!is_transparent(getArrayByte3D(state->blocks, x, y, z+1)) &&
!is_transparent(getArrayByte3D(state->blocks, x, y+1, z))) {
return 1;
}
return 0;
}
static int
rendermode_normal_occluded(void *data, RenderState *state, int x, int y, int z) {
if ( (x != 0) && (y != 15) && (z != 127) &&
!render_mode_hidden(state->rendermode, x-1, y, z) &&
!render_mode_hidden(state->rendermode, x, y, z+1) &&
!render_mode_hidden(state->rendermode, x, y+1, z) &&
!is_transparent(getArrayByte3D(state->blocks, x-1, y, z)) &&
!is_transparent(getArrayByte3D(state->blocks, x, y, z+1)) &&
!is_transparent(getArrayByte3D(state->blocks, x, y+1, z))) {
return 1;
}
return 0;
}
void texture_info::set_coloralphamode(SDL_Texture *texture_id, const render_color *color)
{
UINT32 sr = (UINT32)(255.0f * color->r);
UINT32 sg = (UINT32)(255.0f * color->g);
UINT32 sb = (UINT32)(255.0f * color->b);
UINT32 sa = (UINT32)(255.0f * color->a);
if (color->r >= 1.0f && color->g >= 1.0f && color->b >= 1.0f && is_opaque(color->a))
{
SDL_SetTextureColorMod(texture_id, 0xFF, 0xFF, 0xFF);
SDL_SetTextureAlphaMod(texture_id, 0xFF);
}
/* coloring-only case */
else if (is_opaque(color->a))
{
SDL_SetTextureColorMod(texture_id, sr, sg, sb);
SDL_SetTextureAlphaMod(texture_id, 0xFF);
}
/* alpha and/or coloring case */
else if (!is_transparent(color->a))
{
SDL_SetTextureColorMod(texture_id, sr, sg, sb);
SDL_SetTextureAlphaMod(texture_id, sa);
}
else
{
SDL_SetTextureColorMod(texture_id, 0xFF, 0xFF, 0xFF);
SDL_SetTextureAlphaMod(texture_id, 0x00);
}
}
static void
lighting_draw(void *data, RenderState *state, PyObject *src, PyObject *mask, PyObject *mask_light) {
RenderPrimitiveLighting* self;
int x, y, z;
self = (RenderPrimitiveLighting *)data;
x = state->x, y = state->y, z = state->z;
if ((state->block == 9) || (state->block == 79)) { /* special case for water and ice */
/* looks like we need a new case for lighting, there are
* blocks that are transparent for occlusion calculations and
* need per-face shading if the face is drawn. */
if ((state->block_pdata & 16) == 16) {
do_shading_with_mask(self, state, x, y+1, z, self->facemasks[0]);
}
if ((state->block_pdata & 2) == 2) { /* bottom left */
do_shading_with_mask(self, state, x-1, y, z, self->facemasks[1]);
}
if ((state->block_pdata & 4) == 4) { /* bottom right */
do_shading_with_mask(self, state, x, y, z+1, self->facemasks[2]);
}
/* leaves are transparent for occlusion calculations but they
* per face-shading to look as in game */
} else if (is_transparent(state->block) && (state->block != 18)) {
/* transparent: do shading on whole block */
do_shading_with_mask(self, state, x, y, z, mask_light);
} else {
/* opaque: do per-face shading */
do_shading_with_mask(self, state, x, y+1, z, self->facemasks[0]);
do_shading_with_mask(self, state, x-1, y, z, self->facemasks[1]);
do_shading_with_mask(self, state, x, y, z+1, self->facemasks[2]);
}
}
int to_system(Color color)
{
if (is_transparent(color))
return -1;
else
return makecol(getr(color),
getg(color),
getb(color));
}
static void
rendermode_overlay_draw(void *data, RenderState *state, PyObject *src, PyObject *mask, PyObject *mask_light) {
RenderModeOverlay *self = (RenderModeOverlay *)data;
unsigned char r, g, b, a;
PyObject *top_block_py, *block_py;
// exactly analogous to edge-line code for these special blocks
int increment=0;
if (state->block == 44) // half-step
increment=6;
else if (state->block == 78) // snow
increment=9;
/* clear the draw space -- set alpha to 0 within mask */
tint_with_mask(state->img, 255, 255, 255, 0, mask, state->imgx, state->imgy, 0, 0);
/* skip rendering the overlay if we can't see it */
if (state->z != 127) {
unsigned char top_block = getArrayByte3D(state->blocks, state->x, state->y, state->z+1);
if (!is_transparent(top_block)) {
return;
}
/* check to be sure this block is solid/fluid */
top_block_py = PyInt_FromLong(top_block);
if (PySequence_Contains(self->solid_blocks, top_block_py) ||
PySequence_Contains(self->fluid_blocks, top_block_py)) {
/* top block is fluid or solid, skip drawing */
Py_DECREF(top_block_py);
return;
}
Py_DECREF(top_block_py);
}
/* check to be sure this block is solid/fluid */
block_py = PyInt_FromLong(state->block);
if (!PySequence_Contains(self->solid_blocks, block_py) &&
!PySequence_Contains(self->fluid_blocks, block_py)) {
/* not fluid or solid, skip drawing the overlay */
Py_DECREF(block_py);
return;
}
Py_DECREF(block_py);
/* get our color info */
self->get_color(data, state, &r, &g, &b, &a);
/* do the overlay */
if (a > 0) {
alpha_over(state->img, self->white_color, self->facemask_top, state->imgx, state->imgy + increment, 0, 0);
tint_with_mask(state->img, r, g, b, a, self->facemask_top, state->imgx, state->imgy + increment, 0, 0);
}
}
/* does per-face occlusion checking for do_shading_with_mask */
inline int
lighting_is_face_occluded(RenderState *state, int skip_sides, int x, int y, int z) {
/* first, check for occlusion if the block is in the local chunk */
if (x >= 0 && x < 16 && y >= 0 && y < 16 && z >= 0 && z < 16) {
unsigned short block = getArrayShort3D(state->blocks, x, y, z);
if (!is_transparent(block) && !render_mode_hidden(state->rendermode, x, y, z)) {
/* this face isn't visible, so don't draw anything */
return 1;
}
} else if (!skip_sides) {
unsigned short block = get_data(state, BLOCKS, x, y, z);
if (!is_transparent(block)) {
/* the same thing but for adjacent chunks, this solves an
ugly black doted line between chunks in night rendermode.
This wouldn't be necessary if the textures were truly
tessellate-able */
return 1;
}
}
return 0;
}
/* shades the drawn block with the given facemask/black_color, based on the
lighting results from (x, y, z) */
static inline void
do_shading_with_mask(RenderModeLighting *self, RenderState *state,
int x, int y, int z, PyObject *mask) {
float black_coeff;
/* first, check for occlusion if the block is in the local chunk */
if (x >= 0 && x < 16 && y >= 0 && y < 16 && z >= 0 && z < 128) {
unsigned char block = getArrayByte3D(state->blocks, x, y, z);
if (!is_transparent(block) && !render_mode_hidden(state->rendermode, x, y, z)) {
/* this face isn't visible, so don't draw anything */
return;
}
} else if (self->skip_sides && (x == -1) && (state->left_blocks != Py_None)) {
unsigned char block = getArrayByte3D(state->left_blocks, 15, state->y, state->z);
if (!is_transparent(block)) {
/* the same thing but for adjacent chunks, this solves an
ugly black doted line between chunks in night rendermode.
This wouldn't be necessary if the textures were truly
tessellate-able */
return;
}
} else if (self->skip_sides && (y == 16) && (state->right_blocks != Py_None)) {
unsigned char block = getArrayByte3D(state->right_blocks, state->x, 0, state->z);
if (!is_transparent(block)) {
/* the same thing but for adjacent chunks, this solves an
ugly black doted line between chunks in night rendermode.
This wouldn't be necessary if the textures were truly
tessellate-able */
return;
}
}
black_coeff = get_lighting_coefficient(self, state, x, y, z);
black_coeff *= self->shade_strength;
alpha_over_full(state->img, self->black_color, mask, black_coeff, state->imgx, state->imgy, 0, 0);
}
inline unsigned char
estimate_blocklevel(RenderPrimitiveLighting *self, RenderState *state,
int x, int y, int z, int *authoratative) {
/* placeholders for later data arrays, coordinates */
unsigned char block, blocklevel;
unsigned int average_count = 0, average_gather = 0, coeff = 0;
/* defaults to "guess" until told otherwise */
if (authoratative)
*authoratative = 0;
block = get_data(state, BLOCKS, x, y, z);
if (authoratative == NULL) {
int auth;
/* iterate through all surrounding blocks to take an average */
int dx, dy, dz, local_block;
for (dx = -1; dx <= 1; dx += 2) {
for (dy = -1; dy <= 1; dy += 2) {
for (dz = -1; dz <= 1; dz += 2) {
coeff = estimate_blocklevel(self, state, x+dx, y+dy, z+dz, &auth);
local_block = get_data(state, BLOCKS, x+dx, y+dy, z+dz);
/* only add if the block is transparent, this seems to look better than
using every block */
if (auth && is_transparent(local_block)) {
average_gather += coeff;
average_count++;
}
}
}
}
}
/* only return the average if at least one was authoratative */
if (average_count > 0) {
return average_gather / average_count;
}
blocklevel = get_data(state, BLOCKLIGHT, x, y, z);
/* no longer a guess */
if (!(block == 44 || block == 53 || block == 67 || block == 108 || block == 109) && authoratative) {
*authoratative = 1;
}
return blocklevel;
}
inline void
get_lighting_color(RenderPrimitiveLighting *self, RenderState *state,
int x, int y, int z,
unsigned char *r, unsigned char *g, unsigned char *b) {
/* placeholders for later data arrays, coordinates */
unsigned char block, skylevel, blocklevel;
block = get_data(state, BLOCKS, x, y, z);
skylevel = get_data(state, SKYLIGHT, x, y, z);
blocklevel = get_data(state, BLOCKLIGHT, x, y, z);
/* special half-step handling, stairs handling */
/* Anvil also needs to be here, blockid 145 */
if (block == 44 || block == 53 || block == 67 || block == 108 || block == 109 || block == 114 ||
block == 128 || block == 134 || block == 135 || block == 136 || block == 145 || block == 156) {
unsigned int upper_block;
/* stairs and half-blocks take the skylevel from the upper block if it's transparent */
int upper_counter = 0;
/* but if the upper_block is one of these special half-steps, we need to look at *its* upper_block */
do {
upper_counter++;
upper_block = get_data(state, BLOCKS, x, y + upper_counter, z);
} while (upper_block == 44 || upper_block == 53 || upper_block == 67 || upper_block == 108 ||
upper_block == 109 || upper_block == 114 || upper_block == 128 || upper_block == 134 ||
upper_block == 135 || upper_block == 136 || upper_block == 156 );
if (is_transparent(upper_block)) {
skylevel = get_data(state, SKYLIGHT, x, y + upper_counter, z);
} else {
skylevel = 15;
}
/* the block has a bad blocklevel, estimate it from neigborhood
* use given coordinates, no local ones! */
blocklevel = estimate_blocklevel(self, state, x, y, z, NULL);
}
if (block == 10 || block == 11) {
/* lava blocks should always be lit! */
*r = 255;
*g = 255;
*b = 255;
return;
}
self->calculate_light_color(self, MIN(skylevel, 15), MIN(blocklevel, 15), r, g, b);
}
void exposed_faces(
Map *map, int x, int y, int z,
int *f1, int *f2, int *f3, int *f4, int *f5, int *f6)
{
*f1 = is_transparent(map_get(map, x - 1, y, z));
*f2 = is_transparent(map_get(map, x + 1, y, z));
*f3 = is_transparent(map_get(map, x, y + 1, z));
*f4 = is_transparent(map_get(map, x, y - 1, z)) && (y > 0);
*f5 = is_transparent(map_get(map, x, y, z + 1));
*f6 = is_transparent(map_get(map, x, y, z - 1));
}
/* shades the drawn block with the given facemask/black_color, based on the
lighting results from (x, y, z) */
static inline void
do_shading_with_mask(RenderModeLighting *self, RenderState *state,
int x, int y, int z, PyObject *mask) {
float black_coeff;
/* first, check for occlusion if the block is in the local chunk */
if (x >= 0 && x < 16 && y >= 0 && y < 16 && z >= 0 && z < 128) {
unsigned char block = getArrayByte3D(state->blocks, x, y, z);
if (!is_transparent(block)) {
/* this face isn't visible, so don't draw anything */
return;
}
}
black_coeff = get_lighting_coefficient(self, state, x, y, z, NULL);
alpha_over_full(state->img, self->black_color, mask, black_coeff, state->imgx, state->imgy, 0, 0);
}
//===========================================================================================================//
// Utility Functions //
//===========================================================================================================//
void rex_sprite::flatten() {
if (num_layers == 1)
return;
//Paint the last layer onto the second-to-last
for (int i = 0; i < width*height; ++i) {
rltk::vchar* overlay = get_tile(num_layers - 1, i);
if (!is_transparent(overlay)) {
*get_tile(num_layers - 2, i) = *overlay;
}
}
//Remove the last layer
--num_layers;
//Recurse
flatten();
}
void
overlay_draw(void *data, RenderState *state, PyObject *src, PyObject *mask, PyObject *mask_light) {
RenderPrimitiveOverlay *self = (RenderPrimitiveOverlay *)data;
unsigned char r, g, b, a;
unsigned short top_block;
// exactly analogous to edge-line code for these special blocks
int increment=0;
if (state->block == 44) // half-step
increment=6;
else if (state->block == 78) // snow
increment=9;
/* skip rendering the overlay if we can't see it */
top_block = get_data(state, BLOCKS, state->x, state->y+1, state->z);
if (!is_transparent(top_block)) {
return;
}
/* check to be sure this block is solid/fluid */
if (block_has_property(top_block, SOLID) || block_has_property(top_block, FLUID)) {
/* top block is fluid or solid, skip drawing */
return;
}
/* check to be sure this block is solid/fluid */
if (!block_has_property(state->block, SOLID) && !block_has_property(state->block, FLUID)) {
/* not fluid or solid, skip drawing the overlay */
return;
}
/* get our color info */
self->get_color(data, state, &r, &g, &b, &a);
/* do the overlay */
if (a > 0) {
alpha_over_full(state->img, self->white_color, self->facemask_top, a/255.f, state->imgx, state->imgy + increment, 0, 0);
tint_with_mask(state->img, r, g, b, 255, self->facemask_top, state->imgx, state->imgy + increment, 0, 0);
}
}
static void
rendermode_lighting_draw(void *data, RenderState *state, PyObject *src, PyObject *mask) {
RenderModeLighting* self;
int x, y, z;
/* first, chain up */
rendermode_normal.draw(data, state, src, mask);
self = (RenderModeLighting *)data;
x = state->x, y = state->y, z = state->z;
if (is_transparent(state->block)) {
/* transparent: do shading on whole block */
do_shading_with_mask(self, state, x, y, z, mask);
} else {
/* opaque: do per-face shading */
do_shading_with_mask(self, state, x, y, z+1, self->facemasks[0]);
do_shading_with_mask(self, state, x-1, y, z, self->facemasks[1]);
do_shading_with_mask(self, state, x, y+1, z, self->facemasks[2]);
}
}
static void
rendermode_smooth_lighting_draw(void *data, RenderState *state, PyObject *src, PyObject *mask, PyObject *mask_light) {
int light_top = 1;
int light_left = 1;
int light_right = 1;
RenderModeSmoothLighting *self = (RenderModeSmoothLighting *)data;
/* special case for leaves, water 8, water 9
-- these are also smooth-lit! */
if (state->block != 18 && state->block != 8 && state->block != 9 && is_transparent(state->block))
{
/* transparent blocks are rendered as usual, with flat lighting */
rendermode_lighting.draw(data, state, src, mask, mask_light);
return;
}
/* non-transparent blocks get the special smooth treatment */
/* nothing special to do, but we do want to avoid vanilla
* lighting mode draws */
rendermode_normal.draw(data, state, src, mask, mask_light);
/* special code for water */
if (state->block == 9)
{
if (!(state->block_pdata & (1 << 4)))
light_top = 0;
if (!(state->block_pdata & (1 << 1)))
light_left = 0;
if (!(state->block_pdata & (1 << 2)))
light_right = 0;
}
if (light_top)
do_shading_with_rule(self, state, lighting_rules[FACE_TOP]);
if (light_left)
do_shading_with_rule(self, state, lighting_rules[FACE_LEFT]);
if (light_right)
do_shading_with_rule(self, state, lighting_rules[FACE_RIGHT]);
}
inline unsigned char
estimate_blocklevel(RenderModeLighting *self, RenderState *state,
int x, int y, int z, int *authoratative) {
/* placeholders for later data arrays, coordinates */
PyObject *blocks = NULL;
PyObject *blocklight = NULL;
int local_x = x, local_y = y, local_z = z;
unsigned char block, blocklevel;
unsigned int average_count = 0, average_gather = 0, coeff = 0;
/* defaults to "guess" until told otherwise */
if (authoratative)
*authoratative = 0;
/* find out what chunk we're in, and translate accordingly */
if (x >= 0 && y < 16) {
blocks = state->blocks;
blocklight = self->blocklight;
} else if (x < 0) {
local_x += 16;
blocks = state->left_blocks;
blocklight = self->left_blocklight;
} else if (y >= 16) {
local_y -= 16;
blocks = state->right_blocks;
blocklight = self->right_blocklight;
}
/* make sure we have correctly-ranged coordinates */
if (!(local_x >= 0 && local_x < 16 &&
local_y >= 0 && local_y < 16 &&
local_z >= 0 && local_z < 128)) {
return 0;
}
/* also, make sure we have enough info to correctly calculate lighting */
if (blocks == Py_None || blocks == NULL ||
blocklight == Py_None || blocklight == NULL) {
return 0;
}
block = getArrayByte3D(blocks, local_x, local_y, local_z);
if (authoratative == NULL) {
int auth;
/* iterate through all surrounding blocks to take an average */
int dx, dy, dz, local_block;
for (dx = -1; dx <= 1; dx += 2) {
for (dy = -1; dy <= 1; dy += 2) {
for (dz = -1; dz <= 1; dz += 2) {
/* skip if block is out of range */
if (x+dx < 0 || x+dx >= 16 ||
y+dy < 0 || y+dy >= 16 ||
z+dz < 0 || z+dz >= 128) {
continue;
}
coeff = estimate_blocklevel(self, state, x+dx, y+dy, z+dz, &auth);
local_block = getArrayByte3D(blocks, x+dx, y+dy, z+dz);
/* only add if the block is transparent, this seems to look better than
using every block */
if (auth && is_transparent(local_block)) {
average_gather += coeff;
average_count++;
}
}
}
}
}
/* only return the average if at least one was authoratative */
if (average_count > 0) {
return average_gather / average_count;
}
blocklevel = getArrayByte3D(blocklight, local_x, local_y, local_z);
/* no longer a guess */
if (!(block == 44 || block == 53 || block == 67) && authoratative) {
*authoratative = 1;
}
return blocklevel;
}
inline float
get_lighting_coefficient(RenderModeLighting *self, RenderState *state,
int x, int y, int z) {
/* placeholders for later data arrays, coordinates */
PyObject *blocks = NULL;
PyObject *skylight = NULL;
PyObject *blocklight = NULL;
int local_x = x, local_y = y, local_z = z;
unsigned char block, skylevel, blocklevel;
/* find out what chunk we're in, and translate accordingly */
if (x >= 0 && y < 16) {
blocks = state->blocks;
skylight = self->skylight;
blocklight = self->blocklight;
} else if (x < 0) {
local_x += 16;
blocks = state->left_blocks;
skylight = self->left_skylight;
blocklight = self->left_blocklight;
} else if (y >= 16) {
local_y -= 16;
blocks = state->right_blocks;
skylight = self->right_skylight;
blocklight = self->right_blocklight;
}
/* make sure we have correctly-ranged coordinates */
if (!(local_x >= 0 && local_x < 16 &&
local_y >= 0 && local_y < 16 &&
local_z >= 0 && local_z < 128)) {
return self->calculate_darkness(15, 0);
}
/* also, make sure we have enough info to correctly calculate lighting */
if (blocks == Py_None || blocks == NULL ||
skylight == Py_None || skylight == NULL ||
blocklight == Py_None || blocklight == NULL) {
return self->calculate_darkness(15, 0);
}
block = getArrayByte3D(blocks, local_x, local_y, local_z);
/* if this block is opaque, use a fully-lit coeff instead
to prevent stippled lines along chunk boundaries! */
if (!is_transparent(block)) {
return self->calculate_darkness(15, 0);
}
skylevel = getArrayByte3D(skylight, local_x, local_y, local_z);
blocklevel = getArrayByte3D(blocklight, local_x, local_y, local_z);
/* special half-step handling */
if (block == 44 || block == 53 || block == 67) {
unsigned int upper_block;
/* stairs and half-blocks take the skylevel from the upper block if it's transparent */
if (local_z != 127) {
int upper_counter = 0;
/* but if the upper_block is one of these special half-steps, we need to look at *its* upper_block */
do {
upper_counter++;
upper_block = getArrayByte3D(blocks, local_x, local_y, local_z + upper_counter);
} while ((upper_block == 44 || upper_block == 54 || upper_block == 67) && local_z < 127);
if (is_transparent(upper_block)) {
skylevel = getArrayByte3D(skylight, local_x, local_y, local_z + upper_counter);
}
} else {
upper_block = 0;
skylevel = 15;
}
/* the block has a bad blocklevel, estimate it from neigborhood
* use given coordinates, no local ones! */
blocklevel = estimate_blocklevel(self, state, x, y, z, NULL);
}
if (block == 10 || block == 11) {
/* lava blocks should always be lit! */
return 0.0f;
}
return self->calculate_darkness(skylevel, blocklevel);
}
void WorkerItem::computeChunk(World *world)
{
char *opaque = (char *)calloc(XZ_SIZE * XZ_SIZE * Y_SIZE, sizeof(float));
char *light = (char *)calloc(XZ_SIZE * XZ_SIZE * Y_SIZE, sizeof(char));
char *highest = (char *)calloc(XZ_SIZE * XZ_SIZE, sizeof(char));
int ox = p * CHUNK_SIZE - CHUNK_SIZE - 1;
int oy = -1;
int oz = q * CHUNK_SIZE - CHUNK_SIZE - 1;
// check for lights
int has_light = 0;
if (SHOW_LIGHTS) {
for (int a = 0; a < 3; a++) {
for (int b = 0; b < 3; b++) {
Map *map = light_maps[a][b];
if (map && map->size) {
has_light = 1;
}
}
}
}
// populate opaque array
for (int a = 0; a < 3; a++) {
for (int b = 0; b < 3; b++) {
Map *map = block_maps[a][b];
if (!map) {
continue;
}
MAP_FOR_EACH(map, ex, ey, ez, ew) {
int rawx = Map::getX(i);
int rawy = Map::getY(i);
int rawz = Map::getZ(i);
int x2 = rawx + map->dx - ox;
int y2 = rawy + map->dy - oy;
int z2 = rawz + map->dz - oz;
int x = 0;
int y = 0;
int z = 0;
if(entry->e.computed)
{
x = x2;
y = y2;
z = z2;
}
int w = ew;
// TODO: this should be unnecessary
if (x < 0 || y < 0 || z < 0) {
continue;
}
if (x >= XZ_SIZE || y >= Y_SIZE || z >= XZ_SIZE) {
continue;
}
// END TODO
opaque[XYZ(x, y, z)] = !is_transparent(w);
if (opaque[XYZ(x, y, z)]) {
highest[XZ(x, z)] = MAX(highest[XZ(x, z)], y);
}
} END_MAP_FOR_EACH;
}
}
static void
rendermode_normal_draw(void *data, RenderState *state, PyObject *src, PyObject *mask, PyObject *mask_light) {
RenderModeNormal *self = (RenderModeNormal *)data;
/* draw the block! */
alpha_over(state->img, src, mask, state->imgx, state->imgy, 0, 0);
/* check for biome-compatible blocks
*
* NOTES for maintainers:
*
* To add a biome-compatible block, add an OR'd condition to this
* following if block, a case to the first switch statement to handle when
* biome info IS available, and another case to the second switch
* statement for when biome info ISN'T available.
*
* Make sure that in textures.py, the generated textures are the
* biome-compliant ones! The tinting is now all done here.
*/
if (/* grass, but not snowgrass */
(state->block == 2 && !(state->z < 127 && getArrayByte3D(state->blocks, state->x, state->y, state->z+1) == 78)) ||
/* water */
state->block == 8 || state->block == 9 ||
/* leaves */
state->block == 18 ||
/* tallgrass, but not dead shrubs */
(state->block == 31 && state->block_data != 0) ||
/* pumpkin/melon stem, not fully grown. Fully grown stems
* get constant brown color (see textures.py) */
(((state->block == 104) || (state->block == 105)) && (state->block_data != 7)) ||
/* vines */
state->block == 106 ||
/* lily pads */
state->block == 111)
{
/* do the biome stuff! */
PyObject *facemask = mask;
unsigned char r, g, b;
if (state->block == 2) {
/* grass needs a special facemask */
facemask = self->grass_texture;
}
if (self->biome_data) {
/* we have data, so use it! */
unsigned int index;
PyObject *color = NULL;
index = ((self->chunk_y * 16) + state->y) * 16 * 32 + (self->chunk_x * 16) + state->x;
index = big_endian_ushort(getArrayShort1D(self->biome_data, index));
switch (state->block) {
case 2:
/* grass */
color = PySequence_GetItem(self->grasscolor, index);
break;
case 8:
case 9:
/* water */
if (self->watercolor)
{
color = PySequence_GetItem(self->watercolor, index);
} else {
color = NULL;
facemask = NULL;
}
break;
case 18:
/* leaves */
if (state->block_data != 2)
{
/* not birch! */
color = PySequence_GetItem(self->foliagecolor, index);
} else {
/* birch!
birch foliage color is flipped XY-ways */
unsigned int index_x = 255 - (index % 256);
unsigned int index_y = 255 - (index / 256);
index = index_y * 256 + index_x;
color = PySequence_GetItem(self->foliagecolor, index);
}
break;
case 31:
/* tall grass */
color = PySequence_GetItem(self->grasscolor, index);
break;
case 104:
/* pumpkin stem */
color = PySequence_GetItem(self->grasscolor, index);
break;
case 105:
/* melon stem */
color = PySequence_GetItem(self->grasscolor, index);
break;
case 106:
/* vines */
color = PySequence_GetItem(self->grasscolor, index);
break;
case 111:
/* lily padas */
color = PySequence_GetItem(self->grasscolor, index);
break;
default:
break;
};
if (color)
{
/* we've got work to do */
r = PyInt_AsLong(PyTuple_GET_ITEM(color, 0));
g = PyInt_AsLong(PyTuple_GET_ITEM(color, 1));
b = PyInt_AsLong(PyTuple_GET_ITEM(color, 2));
Py_DECREF(color);
}
} else {
if (state->block == 2 || state->block == 31 ||
state->block == 104 || state->block == 105)
/* grass and pumpkin/melon stems */
{
r = 115;
g = 175;
b = 71;
}
if (state->block == 8 || state->block == 9)
/* water */
{
/* by default water is fine with nothing */
facemask = NULL;
}
if (state->block == 18 || state->block == 106 || state->block == 111)
/* leaves, vines and lyli pads */
{
r = 37;
g = 118;
b = 25;
}
}
if (facemask)
tint_with_mask(state->img, r, g, b, 255, facemask, state->imgx, state->imgy, 0, 0);
}
if (self->height_fading) {
/* do some height fading */
PyObject *height_color = self->white_color;
/* negative alpha => darkness, positive => light */
float alpha = (1.0 / (1 + expf((70 - state->z) / 11.0))) * 0.6 - 0.55;
if (alpha < 0.0) {
alpha *= -1;
height_color = self->black_color;
}
alpha_over_full(state->img, height_color, mask_light, alpha, state->imgx, state->imgy, 0, 0);
}
/* Draw some edge lines! */
// draw.line(((imgx+12,imgy+increment), (imgx+22,imgy+5+increment)), fill=(0,0,0), width=1)
if (state->block == 44 || state->block == 78 || !is_transparent(state->block)) {
Imaging img_i = imaging_python_to_c(state->img);
unsigned char ink[] = {0, 0, 0, 255 * self->edge_opacity};
int increment=0;
if (state->block == 44) // half-step
increment=6;
else if ((state->block == 78) || (state->block == 93) || (state->block == 94)) // snow, redstone repeaters (on and off)
increment=9;
if ((state->x == 15) && (state->up_right_blocks != Py_None)) {
unsigned char side_block = getArrayByte3D(state->up_right_blocks, 0, state->y, state->z);
if (side_block != state->block && is_transparent(side_block)) {
ImagingDrawLine(img_i, state->imgx+12, state->imgy+1+increment, state->imgx+22+1, state->imgy+5+1+increment, &ink, 1);
ImagingDrawLine(img_i, state->imgx+12, state->imgy+increment, state->imgx+22+1, state->imgy+5+increment, &ink, 1);
}
} else if (state->x != 15) {
unsigned char side_block = getArrayByte3D(state->blocks, state->x+1, state->y, state->z);
if (side_block != state->block && is_transparent(side_block)) {
ImagingDrawLine(img_i, state->imgx+12, state->imgy+1+increment, state->imgx+22+1, state->imgy+5+1+increment, &ink, 1);
ImagingDrawLine(img_i, state->imgx+12, state->imgy+increment, state->imgx+22+1, state->imgy+5+increment, &ink, 1);
}
}
// if y != 0 and blocks[x,y-1,z] == 0
// chunk boundries are annoying
if ((state->y == 0) && (state->up_left_blocks != Py_None)) {
unsigned char side_block = getArrayByte3D(state->up_left_blocks, state->x, 15, state->z);
if (side_block != state->block && is_transparent(side_block)) {
ImagingDrawLine(img_i, state->imgx, state->imgy+6+1+increment, state->imgx+12+1, state->imgy+1+increment, &ink, 1);
ImagingDrawLine(img_i, state->imgx, state->imgy+6+increment, state->imgx+12+1, state->imgy+increment, &ink, 1);
}
} else if (state->y != 0) {
unsigned char side_block = getArrayByte3D(state->blocks, state->x, state->y-1, state->z);
if (side_block != state->block && is_transparent(side_block)) {
// draw.line(((imgx,imgy+6+increment), (imgx+12,imgy+increment)), fill=(0,0,0), width=1)
ImagingDrawLine(img_i, state->imgx, state->imgy+6+1+increment, state->imgx+12+1, state->imgy+1+increment, &ink, 1);
ImagingDrawLine(img_i, state->imgx, state->imgy+6+increment, state->imgx+12+1, state->imgy+increment, &ink, 1);
}
}
}
}
Array VoxelMesher::build(const VoxelBuffer &buffer, unsigned int channel, Vector3i min, Vector3i max) {
uint64_t time_before = OS::get_singleton()->get_ticks_usec();
ERR_FAIL_COND_V(_library.is_null(), Array());
ERR_FAIL_COND_V(channel >= VoxelBuffer::MAX_CHANNELS, Array());
const VoxelLibrary &library = **_library;
for (unsigned int i = 0; i < MAX_MATERIALS; ++i) {
Arrays &a = _arrays[i];
a.positions.clear();
a.normals.clear();
a.uvs.clear();
a.colors.clear();
a.indices.clear();
}
float baked_occlusion_darkness;
if (_bake_occlusion)
baked_occlusion_darkness = _baked_occlusion_darkness / 3.0;
// The technique is Culled faces.
// Could be improved with greedy meshing: https://0fps.net/2012/06/30/meshing-in-a-minecraft-game/
// However I don't feel it's worth it yet:
// - Not so much gain for organic worlds with lots of texture variations
// - Works well with cubes but not with any shape
// - Slower
// => Could be implemented in a separate class?
// Data must be padded, hence the off-by-one
Vector3i::sort_min_max(min, max);
const Vector3i pad(1, 1, 1);
min.clamp_to(pad, max);
max.clamp_to(min, buffer.get_size() - pad);
int index_offset = 0;
// Iterate 3D padded data to extract voxel faces.
// This is the most intensive job in this class, so all required data should be as fit as possible.
// The buffer we receive MUST be dense (i.e not compressed, and channels allocated).
// That means we can use raw pointers to voxel data inside instead of using the higher-level getters,
// and then save a lot of time.
uint8_t *type_buffer = buffer.get_channel_raw(Voxel::CHANNEL_TYPE);
// _
// | \
// /\ \\
// / /|\\\
// | |\ \\\
// | \_\ \\|
// | | )
// \ | |
// \ /
CRASH_COND(type_buffer == NULL);
//CRASH_COND(memarr_len(type_buffer) != buffer.get_volume() * sizeof(uint8_t));
// Build lookup tables so to speed up voxel access.
// These are values to add to an address in order to get given neighbor.
int row_size = buffer.get_size().y;
int deck_size = buffer.get_size().x * row_size;
int side_neighbor_lut[Cube::SIDE_COUNT];
side_neighbor_lut[Cube::SIDE_LEFT] = row_size;
side_neighbor_lut[Cube::SIDE_RIGHT] = -row_size;
side_neighbor_lut[Cube::SIDE_BACK] = -deck_size;
side_neighbor_lut[Cube::SIDE_FRONT] = deck_size;
side_neighbor_lut[Cube::SIDE_BOTTOM] = -1;
side_neighbor_lut[Cube::SIDE_TOP] = 1;
int edge_neighbor_lut[Cube::EDGE_COUNT];
edge_neighbor_lut[Cube::EDGE_BOTTOM_BACK] = side_neighbor_lut[Cube::SIDE_BOTTOM] + side_neighbor_lut[Cube::SIDE_BACK];
edge_neighbor_lut[Cube::EDGE_BOTTOM_FRONT] = side_neighbor_lut[Cube::SIDE_BOTTOM] + side_neighbor_lut[Cube::SIDE_FRONT];
edge_neighbor_lut[Cube::EDGE_BOTTOM_LEFT] = side_neighbor_lut[Cube::SIDE_BOTTOM] + side_neighbor_lut[Cube::SIDE_LEFT];
edge_neighbor_lut[Cube::EDGE_BOTTOM_RIGHT] = side_neighbor_lut[Cube::SIDE_BOTTOM] + side_neighbor_lut[Cube::SIDE_RIGHT];
edge_neighbor_lut[Cube::EDGE_BACK_LEFT] = side_neighbor_lut[Cube::SIDE_BACK] + side_neighbor_lut[Cube::SIDE_LEFT];
edge_neighbor_lut[Cube::EDGE_BACK_RIGHT] = side_neighbor_lut[Cube::SIDE_BACK] + side_neighbor_lut[Cube::SIDE_RIGHT];
edge_neighbor_lut[Cube::EDGE_FRONT_LEFT] = side_neighbor_lut[Cube::SIDE_FRONT] + side_neighbor_lut[Cube::SIDE_LEFT];
edge_neighbor_lut[Cube::EDGE_FRONT_RIGHT] = side_neighbor_lut[Cube::SIDE_FRONT] + side_neighbor_lut[Cube::SIDE_RIGHT];
edge_neighbor_lut[Cube::EDGE_TOP_BACK] = side_neighbor_lut[Cube::SIDE_TOP] + side_neighbor_lut[Cube::SIDE_BACK];
edge_neighbor_lut[Cube::EDGE_TOP_FRONT] = side_neighbor_lut[Cube::SIDE_TOP] + side_neighbor_lut[Cube::SIDE_FRONT];
edge_neighbor_lut[Cube::EDGE_TOP_LEFT] = side_neighbor_lut[Cube::SIDE_TOP] + side_neighbor_lut[Cube::SIDE_LEFT];
edge_neighbor_lut[Cube::EDGE_TOP_RIGHT] = side_neighbor_lut[Cube::SIDE_TOP] + side_neighbor_lut[Cube::SIDE_RIGHT];
int corner_neighbor_lut[Cube::CORNER_COUNT];
corner_neighbor_lut[Cube::CORNER_BOTTOM_BACK_LEFT] = side_neighbor_lut[Cube::SIDE_BOTTOM] + side_neighbor_lut[Cube::SIDE_BACK] + side_neighbor_lut[Cube::SIDE_LEFT];
corner_neighbor_lut[Cube::CORNER_BOTTOM_BACK_RIGHT] = side_neighbor_lut[Cube::SIDE_BOTTOM] + side_neighbor_lut[Cube::SIDE_BACK] + side_neighbor_lut[Cube::SIDE_RIGHT];
corner_neighbor_lut[Cube::CORNER_BOTTOM_FRONT_RIGHT] = side_neighbor_lut[Cube::SIDE_BOTTOM] + side_neighbor_lut[Cube::SIDE_FRONT] + side_neighbor_lut[Cube::SIDE_RIGHT];
corner_neighbor_lut[Cube::CORNER_BOTTOM_FRONT_LEFT] = side_neighbor_lut[Cube::SIDE_BOTTOM] + side_neighbor_lut[Cube::SIDE_FRONT] + side_neighbor_lut[Cube::SIDE_LEFT];
corner_neighbor_lut[Cube::CORNER_TOP_BACK_LEFT] = side_neighbor_lut[Cube::SIDE_TOP] + side_neighbor_lut[Cube::SIDE_BACK] + side_neighbor_lut[Cube::SIDE_LEFT];
corner_neighbor_lut[Cube::CORNER_TOP_BACK_RIGHT] = side_neighbor_lut[Cube::SIDE_TOP] + side_neighbor_lut[Cube::SIDE_BACK] + side_neighbor_lut[Cube::SIDE_RIGHT];
corner_neighbor_lut[Cube::CORNER_TOP_FRONT_RIGHT] = side_neighbor_lut[Cube::SIDE_TOP] + side_neighbor_lut[Cube::SIDE_FRONT] + side_neighbor_lut[Cube::SIDE_RIGHT];
corner_neighbor_lut[Cube::CORNER_TOP_FRONT_LEFT] = side_neighbor_lut[Cube::SIDE_TOP] + side_neighbor_lut[Cube::SIDE_FRONT] + side_neighbor_lut[Cube::SIDE_LEFT];
uint64_t time_prep = OS::get_singleton()->get_ticks_usec() - time_before;
time_before = OS::get_singleton()->get_ticks_usec();
for (unsigned int z = min.z; z < max.z; ++z) {
for (unsigned int x = min.x; x < max.x; ++x) {
for (unsigned int y = min.y; y < max.y; ++y) {
// min and max are chosen such that you can visit 1 neighbor away from the current voxel without size check
// TODO In this intensive routine, there is a way to make voxel access fastest by getting a pointer to the channel,
// and using offset lookup to get neighbors rather than going through get_voxel validations
int voxel_index = y + x * row_size + z * deck_size;
int voxel_id = type_buffer[voxel_index];
if (voxel_id != 0 && library.has_voxel(voxel_id)) {
const Voxel &voxel = library.get_voxel_const(voxel_id);
Arrays &arrays = _arrays[voxel.get_material_id()];
// Hybrid approach: extract cube faces and decimate those that aren't visible,
// and still allow voxels to have geometry that is not a cube
// Sides
for (unsigned int side = 0; side < Cube::SIDE_COUNT; ++side) {
const PoolVector<Vector3> &positions = voxel.get_model_side_positions(side);
int vertex_count = positions.size();
if (vertex_count != 0) {
int neighbor_voxel_id = type_buffer[voxel_index + side_neighbor_lut[side]];
// TODO Better face visibility test
if (is_face_visible(library, voxel, neighbor_voxel_id)) {
// The face is visible
int shaded_corner[8] = { 0 };
if (_bake_occlusion) {
// Combinatory solution for https://0fps.net/2013/07/03/ambient-occlusion-for-minecraft-like-worlds/
for (unsigned int j = 0; j < 4; ++j) {
unsigned int edge = Cube::g_side_edges[side][j];
int edge_neighbor_id = type_buffer[voxel_index + edge_neighbor_lut[edge]];
if (!is_transparent(library, edge_neighbor_id)) {
shaded_corner[Cube::g_edge_corners[edge][0]] += 1;
shaded_corner[Cube::g_edge_corners[edge][1]] += 1;
}
}
for (unsigned int j = 0; j < 4; ++j) {
unsigned int corner = Cube::g_side_corners[side][j];
if (shaded_corner[corner] == 2) {
shaded_corner[corner] = 3;
} else {
int corner_neigbor_id = type_buffer[voxel_index + corner_neighbor_lut[corner]];
if (!is_transparent(library, corner_neigbor_id)) {
shaded_corner[corner] += 1;
}
}
}
}
PoolVector<Vector3>::Read rv = positions.read();
PoolVector<Vector2>::Read rt = voxel.get_model_side_uv(side).read();
// Subtracting 1 because the data is padded
Vector3 pos(x - 1, y - 1, z - 1);
// Append vertices of the faces in one go, don't use push_back
{
int append_index = arrays.positions.size();
arrays.positions.resize(arrays.positions.size() + vertex_count);
Vector3 *w = arrays.positions.ptrw() + append_index;
for (unsigned int i = 0; i < vertex_count; ++i) {
w[i] = rv[i] + pos;
}
}
{
int append_index = arrays.uvs.size();
arrays.uvs.resize(arrays.uvs.size() + vertex_count);
memcpy(arrays.uvs.ptrw() + append_index, rt.ptr(), vertex_count * sizeof(Vector2));
}
{
int append_index = arrays.normals.size();
arrays.normals.resize(arrays.normals.size() + vertex_count);
Vector3 *w = arrays.normals.ptrw() + append_index;
for (unsigned int i = 0; i < vertex_count; ++i) {
w[i] = Cube::g_side_normals[side].to_vec3();
}
}
if (_bake_occlusion) {
// Use color array
int append_index = arrays.colors.size();
arrays.colors.resize(arrays.colors.size() + vertex_count);
Color *w = arrays.colors.ptrw() + append_index;
for (unsigned int i = 0; i < vertex_count; ++i) {
Vector3 v = rv[i];
// General purpose occlusion colouring.
// TODO Optimize for cubes
// TODO Fix occlusion inconsistency caused by triangles orientation? Not sure if worth it
float shade = 0;
for (unsigned int j = 0; j < 4; ++j) {
unsigned int corner = Cube::g_side_corners[side][j];
if (shaded_corner[corner]) {
float s = baked_occlusion_darkness * static_cast<float>(shaded_corner[corner]);
float k = 1.0 - Cube::g_corner_position[corner].distance_to(v);
if (k < 0.0)
k = 0.0;
s *= k;
if (s > shade)
shade = s;
}
}
float gs = 1.0 - shade;
w[i] = Color(gs, gs, gs);
}
}
const PoolVector<int> &side_indices = voxel.get_model_side_indices(side);
PoolVector<int>::Read ri = side_indices.read();
unsigned int index_count = side_indices.size();
{
int i = arrays.indices.size();
arrays.indices.resize(arrays.indices.size() + index_count);
int *w = arrays.indices.ptrw();
for(unsigned int j = 0; j < index_count; ++j) {
w[i++] = index_offset + ri[j];
}
}
index_offset += vertex_count;
}
}
}
// Inside
if (voxel.get_model_positions().size() != 0) {
// TODO Get rid of push_backs
const PoolVector<Vector3> &vertices = voxel.get_model_positions();
int vertex_count = vertices.size();
PoolVector<Vector3>::Read rv = vertices.read();
PoolVector<Vector3>::Read rn = voxel.get_model_normals().read();
PoolVector<Vector2>::Read rt = voxel.get_model_uv().read();
Vector3 pos(x - 1, y - 1, z - 1);
for (unsigned int i = 0; i < vertex_count; ++i) {
arrays.normals.push_back(rn[i]);
arrays.uvs.push_back(rt[i]);
arrays.positions.push_back(rv[i] + pos);
}
if(_bake_occlusion) {
// TODO handle ambient occlusion on inner parts
arrays.colors.push_back(Color(1,1,1));
}
const PoolVector<int> &indices = voxel.get_model_indices();
PoolVector<int>::Read ri = indices.read();
unsigned int index_count = indices.size();
for(unsigned int i = 0; i < index_count; ++i) {
arrays.indices.push_back(index_offset + ri[i]);
}
index_offset += vertex_count;
}
}
}
}
}
uint64_t time_meshing = OS::get_singleton()->get_ticks_usec() - time_before;
time_before = OS::get_singleton()->get_ticks_usec();
// Commit mesh
// print_line(String("Made mesh v: ") + String::num(_arrays[0].positions.size())
// + String(", i: ") + String::num(_arrays[0].indices.size()));
Array surfaces;
// TODO We could return a single byte array and use Mesh::add_surface down the line?
for (int i = 0; i < MAX_MATERIALS; ++i) {
const Arrays &arrays = _arrays[i];
if (arrays.positions.size() != 0) {
/*print_line("Arrays:");
for(int i = 0; i < arrays.positions.size(); ++i)
print_line(String(" P {0}").format(varray(arrays.positions[i])));
for(int i = 0; i < arrays.normals.size(); ++i)
print_line(String(" N {0}").format(varray(arrays.normals[i])));
for(int i = 0; i < arrays.uvs.size(); ++i)
print_line(String(" UV {0}").format(varray(arrays.uvs[i])));*/
Array mesh_arrays;
mesh_arrays.resize(Mesh::ARRAY_MAX);
{
PoolVector<Vector3> positions;
PoolVector<Vector2> uvs;
PoolVector<Vector3> normals;
PoolVector<Color> colors;
PoolVector<int> indices;
raw_copy_to(positions, arrays.positions);
raw_copy_to(uvs, arrays.uvs);
raw_copy_to(normals, arrays.normals);
raw_copy_to(colors, arrays.colors);
raw_copy_to(indices, arrays.indices);
mesh_arrays[Mesh::ARRAY_VERTEX] = positions;
mesh_arrays[Mesh::ARRAY_TEX_UV] = uvs;
mesh_arrays[Mesh::ARRAY_NORMAL] = normals;
mesh_arrays[Mesh::ARRAY_COLOR] = colors;
mesh_arrays[Mesh::ARRAY_INDEX] = indices;
}
surfaces.append(mesh_arrays);
}
}
uint64_t time_commit = OS::get_singleton()->get_ticks_usec() - time_before;
//print_line(String("P: {0}, M: {1}, C: {2}").format(varray(time_prep, time_meshing, time_commit)));
return surfaces;
}
gfx::Size Graphics::drawStringAlgorithm(const std::string& str, Color fg, Color bg, const gfx::Rect& rc, int align, bool draw)
{
gfx::Point pt(0, rc.y);
if ((align & (JI_MIDDLE | JI_BOTTOM)) != 0) {
gfx::Size preSize = drawStringAlgorithm(str, ColorNone, ColorNone, rc, 0, false);
if (align & JI_MIDDLE)
pt.y = rc.y + rc.h/2 - preSize.h/2;
else if (align & JI_BOTTOM)
pt.y = rc.y + rc.h - preSize.h;
}
gfx::Size calculatedSize(0, 0);
size_t beg, end, new_word_beg, old_end;
std::string line;
// Draw line-by-line
for (beg=end=0; end != std::string::npos; ) {
pt.x = rc.x;
// Without word-wrap
if ((align & JI_WORDWRAP) == 0) {
end = str.find('\n', beg);
}
// With word-wrap
else {
old_end = std::string::npos;
for (new_word_beg=beg;;) {
end = str.find_first_of(" \n", new_word_beg);
// If we have already a word to print (old_end != npos), and
// we are out of the available width (rc.w) using the new "end",
if ((old_end != std::string::npos) &&
(pt.x+measureString(str.substr(beg, end-beg)).w > rc.w)) {
// We go back to the "old_end" and paint from "beg" to "end"
end = old_end;
break;
}
// If we have more words to print...
else if (end != std::string::npos) {
// Force line break, now we have to paint from "beg" to "end"
if (str[end] == '\n')
break;
// White-space, this is a beginning of a new word.
new_word_beg = end+1;
}
// We are in the end of text
else
break;
old_end = end;
}
}
// Get the entire line to be painted
line = str.substr(beg, end-beg);
gfx::Size lineSize = measureString(line);
calculatedSize.w = MAX(calculatedSize.w, lineSize.w);
// Render the text
if (draw) {
int xout;
if ((align & JI_CENTER) == JI_CENTER)
xout = pt.x + rc.w/2 - lineSize.w/2;
else if ((align & JI_RIGHT) == JI_RIGHT)
xout = pt.x + rc.w - lineSize.w;
else
xout = pt.x;
ji_font_set_aa_mode(m_currentFont, to_system(bg));
textout_ex(m_bmp, m_currentFont, line.c_str(), m_dx+xout, m_dy+pt.y, to_system(fg), to_system(bg));
if (!is_transparent(bg))
fillAreaBetweenRects(bg,
gfx::Rect(rc.x, pt.y, rc.w, lineSize.h),
gfx::Rect(xout, pt.y, lineSize.w, lineSize.h));
}
pt.y += lineSize.h;
calculatedSize.h += lineSize.h;
beg = end+1;
}
// Fill bottom area
if (draw && !is_transparent(bg)) {
if (pt.y < rc.y+rc.h)
fillRect(bg, gfx::Rect(rc.x, pt.y, rc.w, rc.y+rc.h-pt.y));
}
return calculatedSize;
}
/* loads the appropriate light data for the given (possibly non-local)
* coordinates, and returns a black_coeff this is exposed, so other (derived)
* rendermodes can use it
*
* authoratative is a return slot for whether or not this lighting calculation
* is true, or a guess. If we guessed, *authoratative will be false, but if it
* was calculated correctly from available light data, it will be true. You
* may (and probably should) pass NULL.
*/
inline float
get_lighting_coefficient(RenderModeLighting *self, RenderState *state,
int x, int y, int z, int *authoratative) {
/* placeholders for later data arrays, coordinates */
PyObject *blocks = NULL;
PyObject *skylight = NULL;
PyObject *blocklight = NULL;
int local_x = x, local_y = y, local_z = z;
unsigned char block, skylevel, blocklevel;
/* defaults to "guess" until told otherwise */
if (authoratative)
*authoratative = 0;
/* find out what chunk we're in, and translate accordingly */
if (x >= 0 && y < 16) {
blocks = state->blocks;
skylight = self->skylight;
blocklight = self->blocklight;
} else if (x < 0) {
local_x += 16;
blocks = state->left_blocks;
skylight = self->left_skylight;
blocklight = self->left_blocklight;
} else if (y >= 16) {
local_y -= 16;
blocks = state->right_blocks;
skylight = self->right_skylight;
blocklight = self->right_blocklight;
}
/* make sure we have correctly-ranged coordinates */
if (!(local_x >= 0 && local_x < 16 &&
local_y >= 0 && local_y < 16 &&
local_z >= 0 && local_z < 128)) {
return self->calculate_darkness(15, 0);
}
/* also, make sure we have enough info to correctly calculate lighting */
if (blocks == Py_None || blocks == NULL ||
skylight == Py_None || skylight == NULL ||
blocklight == Py_None || blocklight == NULL) {
return self->calculate_darkness(15, 0);
}
block = getArrayByte3D(blocks, local_x, local_y, local_z);
/* if this block is opaque, use a fully-lit coeff instead
to prevent stippled lines along chunk boundaries! */
if (!is_transparent(block)) {
return self->calculate_darkness(15, 0);
}
/* only do special half-step handling if no authoratative pointer was
passed in, which is a sign that we're recursing */
if (block == 44 && authoratative == NULL) {
float average_gather = 0.0f;
unsigned int average_count = 0;
int auth;
float coeff;
/* iterate through all surrounding blocks to take an average */
int dx, dy, dz;
for (dx = -1; dx <= 1; dx += 2) {
for (dy = -1; dy <= 1; dy += 2) {
for (dz = -1; dz <= 1; dz += 2) {
coeff = get_lighting_coefficient(self, state, x+dx, y+dy, z+dz, &auth);
if (auth) {
average_gather += coeff;
average_count++;
}
}
}
}
/* only return the average if at least one was authoratative */
if (average_count > 0)
return average_gather / average_count;
}
if (block == 10 || block == 11) {
/* lava blocks should always be lit! */
return 0.0f;
}
skylevel = getArrayByte3D(skylight, local_x, local_y, local_z);
blocklevel = getArrayByte3D(blocklight, local_x, local_y, local_z);
/* no longer a guess */
if (authoratative)
*authoratative = 1;
return self->calculate_darkness(skylevel, blocklevel);
}
bool LOSfinder::bresen_y(PosPoint source, PosPoint target)
{
int x = source.posx;
int error = 0;
int delta_y = std::abs(source.posy - target.posy);
int deltaerr = std::abs(source.posx - target.posx);
int deltastep = sign(target.posx - source.posx);
int incrstep = sign(target.posy - source.posy);
for (int y = source.posy; y != target.posy; y += incrstep)
{
if ((x % RAY_MULTIPLIER) == 0 && (y % RAY_MULTIPLIER) == 0)
{
// when in corner check side neighbours
// if both of them are not transparent then corner is not transparent
PosPoint left_neighbour(x + deltastep, y, source.posz);
PosPoint right_neighbour(x, y + incrstep, source.posz);
if (!is_transparent(left_neighbour) && !is_transparent(right_neighbour))
{
return false;
}
}
else if (x % RAY_MULTIPLIER == 0)
{
// when ray hits an edge check both tiles. Since ray travels through edge both of them
// must be transparent
PosPoint left_neighbour(x - deltastep, y, source.posz);
PosPoint right_neighbour(x + deltastep, y, source.posz);
if (!is_transparent(left_neighbour) || !is_transparent(right_neighbour))
{
return false;
}
}
else if (y % RAY_MULTIPLIER == 0)
{
// second case of edge handling
PosPoint left_neighbour(x, y - incrstep, source.posz);
PosPoint right_neighbour(x, y + incrstep, source.posz);
if (!is_transparent(left_neighbour) || !is_transparent(right_neighbour))
{
return false;
}
}
else
{
PosPoint new_point(x, y, source.posz);
if (!is_transparent(new_point))
{
return false;
}
}
error += deltaerr;
if (error >= delta_y)
{
x += deltastep;
error -= delta_y;
}
}
return true;
}