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);
}
}
/* properly refs the return value when needed: you DO need to decref the return */
PyObject *
alpha_over_wrap(PyObject *self, PyObject *args)
{
/* raw input python variables */
PyObject *dest, *src, *pos = NULL, *mask = NULL;
/* destination position and size */
int dx, dy, xsize, ysize;
/* return value: dest image on success */
PyObject *ret;
if (!PyArg_ParseTuple(args, "OO|OO", &dest, &src, &pos, &mask))
return NULL;
if (mask == NULL)
mask = src;
/* destination position read */
if (pos == NULL) {
xsize = 0;
ysize = 0;
dx = 0;
dy = 0;
} else {
if (!PyArg_ParseTuple(pos, "iiii", &dx, &dy, &xsize, &ysize)) {
/* try again, but this time try to read a point */
PyErr_Clear();
xsize = 0;
ysize = 0;
if (!PyArg_ParseTuple(pos, "ii", &dx, &dy)) {
PyErr_SetString(PyExc_TypeError,
"given blend destination rect is not valid");
return NULL;
}
}
}
ret = alpha_over(dest, src, mask, dx, dy, xsize, ysize);
if (ret == dest) {
/* Python needs us to own our return value */
Py_INCREF(dest);
}
return ret;
}
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);
}
}
}
}
static void
base_draw(void *data, RenderState *state, PyObject *src, PyObject *mask, PyObject *mask_light) {
PrimitiveBase *self = (PrimitiveBase *)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, and a case to the switch statement to handle biome
* coloring.
*
* 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 && get_data(state, BLOCKS, state->x, state->y+1, state->z) != 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 = 255, g = 255, b = 255;
PyObject *color_table = NULL;
unsigned char flip_xy = 0;
if (state->block == 2) {
/* grass needs a special facemask */
facemask = self->grass_texture;
}
switch (state->block) {
case 2:
/* grass */
color_table = self->grasscolor;
break;
case 8:
case 9:
/* water */
color_table = self->watercolor;
break;
case 18:
/* leaves */
color_table = self->foliagecolor;
if (state->block_data == 2)
{
/* birch!
birch foliage color is flipped XY-ways */
flip_xy = 1;
}
break;
case 31:
/* tall grass */
color_table = self->grasscolor;
break;
case 104:
/* pumpkin stem */
color_table = self->grasscolor;
break;
case 105:
/* melon stem */
color_table = self->grasscolor;
break;
case 106:
/* vines */
color_table = self->grasscolor;
break;
case 111:
/* lily pads */
color_table = self->grasscolor;
break;
default:
break;
};
if (color_table) {
unsigned char biome;
int dx, dz;
unsigned char tablex, tabley;
float temp = 0.0, rain = 0.0;
unsigned int multr = 0, multg = 0, multb = 0;
int tmp;
PyObject *color = NULL;
if (self->use_biomes) {
/* average over all neighbors */
for (dx = -1; dx <= 1; dx++) {
for (dz = -1; dz <= 1; dz++) {
biome = get_data(state, BIOMES, state->x + dx, state->y, state->z + dz);
if (biome >= NUM_BIOMES) {
/* note -- biome 255 shows up on map borders.
who knows what it is? certainly not I.
*/
biome = DEFAULT_BIOME; /* forest -- reasonable default */
}
temp += biome_table[biome].temperature;
rain += biome_table[biome].rainfall;
multr += biome_table[biome].r;
multg += biome_table[biome].g;
multb += biome_table[biome].b;
}
}
temp /= 9.0;
rain /= 9.0;
multr /= 9;
multg /= 9;
multb /= 9;
} else {
/* don't use biomes, just use the default */
temp = biome_table[DEFAULT_BIOME].temperature;
rain = biome_table[DEFAULT_BIOME].rainfall;
multr = biome_table[DEFAULT_BIOME].r;
multg = biome_table[DEFAULT_BIOME].g;
multb = biome_table[DEFAULT_BIOME].b;
}
/* second coordinate is actually scaled to fit inside the triangle
so store it in rain */
rain *= temp;
/* make sure they're sane */
temp = CLAMP(temp, 0.0, 1.0);
rain = CLAMP(rain, 0.0, 1.0);
/* convert to x/y coordinates in color table */
tablex = 255 - (255 * temp);
tabley = 255 - (255 * rain);
if (flip_xy) {
unsigned char tmp = 255 - tablex;
tablex = 255 - tabley;
tabley = tmp;
}
/* look up color! */
color = PySequence_GetItem(color_table, tabley * 256 + tablex);
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);
/* do the after-coloration */
r = MULDIV255(r, multr, tmp);
g = MULDIV255(g, multg, tmp);
b = MULDIV255(b, multb, tmp);
}
/* final coloration */
tint_with_mask(state->img, r, g, b, 255, facemask, state->imgx, state->imgy, 0, 0);
}
}