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Minecraft-Overviewer/overviewer_core/src/rendermode-spawn.c
2011-05-31 20:26:00 -04:00

119 lines
3.5 KiB
C

/*
* This file is part of the Minecraft Overviewer.
*
* Minecraft Overviewer is free software: you can redistribute it and/or
* modify it under the terms of the GNU General Public License as published
* by the Free Software Foundation, either version 3 of the License, or (at
* your option) any later version.
*
* Minecraft Overviewer is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
* Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with the Overviewer. If not, see <http://www.gnu.org/licenses/>.
*/
#include "overviewer.h"
#include <math.h>
static void get_color(void *data, RenderState *state,
unsigned char *r, unsigned char *g, unsigned char *b, unsigned char *a) {
RenderModeSpawn* self = (RenderModeSpawn *)data;
int x = state->x, y = state->y, z = state->z;
int z_light = z + 1;
unsigned char blocklight, skylight;
PyObject *block_py;
/* set a nice, pretty red color */
*r = 229;
*g = 36;
*b = 38;
/* default to no overlay, until told otherwise */
*a = 0;
block_py = PyInt_FromLong(state->block);
if (PySequence_Contains(self->nospawn_blocks, block_py)) {
/* nothing can spawn on this */
Py_DECREF(block_py);
return;
}
Py_DECREF(block_py);
blocklight = getArrayByte3D(self->blocklight, x, y, MIN(127, z_light));
/* if we're at the top, force 15 (brightest!) skylight */
if (z_light == 128) {
skylight = 15;
} else {
skylight = getArrayByte3D(self->skylight, x, y, z_light);
}
if (MAX(blocklight, skylight) <= 7) {
/* hostile mobs spawn in daylight */
*a = 240;
} else if (MAX(blocklight, skylight - 11) <= 7) {
/* hostile mobs spawn at night */
*a = 150;
}
}
static int
rendermode_spawn_start(void *data, RenderState *state) {
RenderModeSpawn* self;
/* first, chain up */
int ret = rendermode_overlay.start(data, state);
if (ret != 0)
return ret;
/* now do custom initializations */
self = (RenderModeSpawn *)data;
self->nospawn_blocks = PyObject_GetAttrString(state->chunk, "nospawn_blocks");
self->blocklight = PyObject_GetAttrString(state->self, "blocklight");
self->skylight = PyObject_GetAttrString(state->self, "skylight");
/* setup custom color */
self->parent.get_color = get_color;
return 0;
}
static void
rendermode_spawn_finish(void *data, RenderState *state) {
/* first free all *our* stuff */
RenderModeSpawn* self = (RenderModeSpawn *)data;
Py_DECREF(self->nospawn_blocks);
Py_DECREF(self->blocklight);
Py_DECREF(self->skylight);
/* now, chain up */
rendermode_overlay.finish(data, state);
}
static int
rendermode_spawn_occluded(void *data, RenderState *state) {
/* no special occlusion here */
return rendermode_overlay.occluded(data, state);
}
static void
rendermode_spawn_draw(void *data, RenderState *state, PyObject *src, PyObject *mask, PyObject *mask_light) {
/* draw normally */
rendermode_overlay.draw(data, state, src, mask, mask_light);
}
RenderModeInterface rendermode_spawn = {
"spawn", "draws a red overlay where monsters can spawn at night",
&rendermode_overlay,
sizeof(RenderModeSpawn),
rendermode_spawn_start,
rendermode_spawn_finish,
rendermode_spawn_occluded,
rendermode_spawn_draw,
};