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astromaddie--HaloCE-VR/source/effects/decals.c
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/*
DECALS.C
symbols in this file:
00086FE0 0130:
_decal_check (0000)
00087110 0080:
_decal_set_first_decal_index (0000)
00087190 0180:
_decal_sprite_get_bounds (0000)
00087310 00a0:
_decals_initialize (0000)
000873B0 00b0:
_decals_initialize_for_new_map (0000)
00087460 0070:
_decals_dispose_from_old_map (0000)
000874D0 0010:
_decals_dispose (0000)
000874E0 0170:
_decals_unlock (0000)
00087650 0080:
_decal_get_first_decal_index (0000)
000876D0 0010:
_decal_new_from_media_collision (0000)
000876E0 01b0:
_render_debug_decals (0000)
00087890 0050:
_projection_from_vector3d (0000)
000878E0 0060:
_projection_sign_from_vector3d (0000)
00087940 00e0:
_project_point2d (0000)
00087A20 0050:
_triple_product3d (0000)
00087A70 0090:
_plane2d_from_points (0000)
00087B00 0040:
_plane3d_from_point_and_normal (0000)
00087B40 0030:
_plane3d_negate (0000)
00087B70 0030:
_plane3d_distance_to_point (0000)
00087BA0 0110:
_real_a_rgb_color_to_pixel32 (0000)
00087CB0 0070:
_bsp3d_get_plane_from_designator (0000)
00087D20 0190:
_decal_update (0000)
00087EB0 0070:
_decal_reinsert (0000)
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_decal_insert (0000)
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??_C@_0DP@PCODPOLL@geometry?9?$DOdecal_surface_count?$DMMA@ (0000)
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00259F70 0015:
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??_C@_0HL@CPOHEJM@surface_queue_write_index?5?$CG?$CG?5?$CKsu@ (0000)
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??_C@_0BB@INIEPHFC@?$CBeditor_geometry?$AA@ (0000)
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??_C@_08ICEJNDOI@velocity?$AA@ (0000)
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??_C@_09BHPEDNK@collision?$AA@ (0000)
0025A400 0007:
??_C@_06NHCMNMEH@origin?$AA@ (0000)
0025A408 001a:
??_C@_0BK@DEMGPIOC@local_random_seed_address?$AA@ (0000)
002DD190 0001:
_decals_enabled (0000)
00435D78 7804:
_decal_geometry (0000)
*/
/* ---------- headers */
#include "effects/decals.h"
#include "cseries/cseries.h"
#include "math/real_math.h"
#include "physics/collision_bsp_definitions.h"
#include "cseries/errors.h"
#include "game/game.h"
#include "math/geometry.h"
#include "memory/data.h"
#include "rasterizer/rasterizer.h"
#include "structures/structures.h"
#include "objects/objects.h"
#include "scenario/scenario.h"
#include "physics/collisions.h"
#include "physics/collision_usage.h"
#include "bitmaps/bitmap_group.h"
#include "bitmaps/bitmaps.h"
#include "cache/texture_cache.h"
#include "effects/decal_definitions.h"
#include "rasterizer/rasterizer_console_vars.h"
#include "render/render.h"
#include "render/render_debug.h"
#include "saved games/game_state.h"
#include "shaders/shader_definitions.h"
/* ---------- constants */
enum
{
NUMBER_OF_DECAL_LAYERS = 5,
MAXIMUM_DECALS_PER_MAP = 2048,
MAXIMUM_DECAL_VERTICES = 1024,
MAXIMUM_DECAL_SURFACE_QUEUE_SIZE = 1024
};
enum
{
_decal_locked_bit,
_decal_permanent_bit
};
enum
{
_bitmap_group_type_sprites = 3
};
enum
{
_collision_surface_two_sided_bit,
_collision_surface_invisible_bit,
_collision_surface_climbable_bit,
_collision_surface_breakable_bit
};
/* ---------- macros */
#define DECAL_GET(index) ((struct decal_datum *)datum_get(global_decal_data, (index)))
/* ---------- structures */
struct decal_editor_geometry;
struct decal_shader_definition
{
struct shader shader;
word flags;
short type;
short framebuffer_blend_function;
word pad02E;
long unused030[5];
struct tag_reference map;
long unused054[5];
};
struct decal_definition
{
word flags; /* 0x000 */
short type; /* 0x002 */
short layer; /* 0x004 */
word pad006;
struct tag_reference next_decal_in_chain; /* 0x008 */
real radius_lower_bound; /* 0x018 */
real radius_upper_bound; /* 0x01C */
long unused020[3];
real intensity_lower_bound; /* 0x02C */
real intensity_upper_bound; /* 0x030 */
real_rgb_color color_lower_bound; /* 0x034 */
real_rgb_color color_upper_bound; /* 0x040 */
long unused04C[3];
short animation_loop_frame_index;
short animation_speed;
long unused05C[7];
real lifetime_lower_bound; /* 0x078 */
real lifetime_upper_bound; /* 0x07C */
real decay_time_lower_bound; /* 0x080 */
real decay_time_upper_bound; /* 0x084 */
long unused088[3];
struct decal_shader_definition shader; /* 0x094 */
real runtime_maximum_sprite_extent; /* 0x0FC */
word runtime_incremental_counter;
word pad102;
long unused104[2];
};
typedef char decal_definition_size_check[
sizeof(struct decal_definition) == 0x10C ? 1 : -1];
typedef char decal_definition_map_index_offset_check[
offsetof(struct decal_definition, shader.map.index) == 0xE4 ? 1 : -1];
struct decal_vertex
{
real_point3d position;
real_point2d texcoord;
boolean clipped;
byte pad015[3];
};
struct decal_geometry
{
struct decal_vertex decal_vertices[MAXIMUM_DECAL_VERTICES];
short decal_vertex_count;
short decal_surface_vertex_counts[MAXIMUM_DECAL_SURFACE_QUEUE_SIZE];
short decal_surface_count;
long decal_surface_indices[MAXIMUM_DECAL_SURFACE_QUEUE_SIZE];
};
typedef char decal_geometry_size_check[
sizeof(struct decal_geometry) == 0x7804 ? 1 : -1];
struct decal_projection
{
real_matrix4x3 basis;
real_rectangle2d extent;
real_plane3d plane;
short projection;
boolean sign;
byte pad057;
real_point2d decal_points2d[4];
real_vector2d texture_u_axis;
real_vector2d texture_v_axis;
real texture_scale;
};
typedef char decal_projection_size_check[
sizeof(struct decal_projection) == 0x8C ? 1 : -1];
struct decal_render_vertex
{
real_point3d position;
short texcoord[2];
};
struct decal_quad
{
struct decal_render_vertex vertices[4];
};
struct decal_wrap_parameters
{
real minimum_wrap_angle;
real minimum_skip_angle;
real radius_exclusion_multiplier;
boolean wrap;
byte pad00D[3];
};
struct decal_datum
{
short identifier;
word flags;
short cluster_index;
short layer;
real_point3d position;
long creation_time;
byte sequence_index;
byte unused_was_frames_remaining;
byte sprite_index;
byte bitmap_index;
real lifetime;
real decay_time;
pixel32 color;
byte intensity;
byte unused;
short quad_count;
long definition_index;
long previous_decal_index;
long next_decal_index;
};
typedef char decal_size_check[
sizeof(struct decal_datum) == 0x38 ? 1 : -1];
struct decal_globals
{
long first_decal_indices[NUMBER_OF_DECAL_LAYERS][MAXIMUM_CLUSTERS_PER_STRUCTURE];
long first_disconnected_decal_index;
long locked_count;
long permanent_count;
};
/* ---------- prototypes */
static void decal_check(
long decal_index,
boolean layer_check);
static void decal_update(
long decal_index);
static void decal_set_first_decal_index(
short cluster_index,
short layer,
long decal_index);
static void decal_reinsert(
long decal_index,
short cluster_index,
short layer);
static void decal_sprite_get_bounds(
struct decal_definition const *definition,
short sequence_index,
short sprite_index,
real radius,
real_rectangle2d *sprite_bounds,
real_rectangle2d *extent);
/* These January-private callees belong to this translation unit. */
static void decal_projection_create(
real_matrix4x3 const *basis,
real_rectangle2d const *extent,
struct decal_projection *projection);
static void decal_clip_to_surface(
struct decal_geometry *geometry,
struct decal_projection const *projection,
long surface_index,
boolean update_surface_queue,
real radius,
short type,
long *surface_queue,
short *surface_queue_write_index,
long *deviant_surface_list,
short *deviant_surface_count);
static long decal_insert(
long cache_index,
short cluster_index,
short layer,
long next_decal_index,
boolean permanent);
/* ---------- globals */
extern struct data_array *global_decal_data;
boolean decals_enabled= TRUE;
static real_point2d decal_points2d_temp[2][12];
static struct decal_globals *decal_globals;
static struct decal_geometry decal_geometry = {0};
static boolean decal_locked_count_reported = FALSE;
static boolean decal_insert_locked_count_reported = FALSE;
static boolean decals_unlock_locked_count_reported = FALSE;
static boolean decals_unlock_permanent_count_reported = FALSE;
static boolean decal_delete_locked_reported = FALSE;
static boolean decal_delete_permanent_reported = FALSE;
struct decal_wrap_parameters const decal_wrap_parameters[NUMBER_OF_DECAL_TYPES] =
{
{ 40.0f, 110.0f, 1.5f, TRUE },
{ 40.0f, 110.0f, 1.5f, TRUE },
{ 40.0f, 110.0f, 1.5f, TRUE },
{ 10.0f, 10.0f, 1.5f, FALSE }
};
/* SECONDS_PER_TICK: name from the 2003 PC demo PDB and the HCEX PDB (decals file static const float) */
static real const SECONDS_PER_TICK = 1.0f / TICKS_PER_SECOND;
boolean debug_decals;
/* ---------- public code */
void decals_initialize(
void)
{
global_decal_data = game_state_data_new(
"decals",
MAXIMUM_DECALS_PER_MAP,
sizeof(struct decal_datum));
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 593, global_decal_data);
global_decal_data->identifier_zero_invalid = TRUE;
decal_globals = game_state_malloc(
"decal globals",
NULL,
sizeof(struct decal_globals));
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 596, decal_globals);
rasterizer_decals_initialize();
decal_geometry.decal_vertex_count = 0;
decal_geometry.decal_surface_count = 0;
return;
}
void decals_initialize_for_new_map(
void)
{
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 610, global_decal_data);
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 611, decal_globals);
csmemset(
decal_globals->first_decal_indices,
NONE,
sizeof(decal_globals->first_decal_indices));
decal_globals->first_disconnected_decal_index = NONE;
decal_globals->locked_count = 0;
decal_globals->permanent_count = 0;
data_make_valid(global_decal_data);
rasterizer_decals_initialize_for_new_map();
decal_geometry.decal_vertex_count = 0;
decal_geometry.decal_surface_count = 0;
return;
}
void decals_dispose_from_old_map(
void)
{
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 777, global_decal_data);
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 778, decal_globals);
rasterizer_decals_dispose_from_old_map();
data_make_invalid(global_decal_data);
return;
}
void decals_dispose(
void)
{
global_decal_data = NULL;
rasterizer_decals_dispose();
return;
}
void decals_unlock(
boolean permanent)
{
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 801, global_decal_data);
if (global_decal_data->valid)
{
struct data_iterator iterator;
struct decal_datum *decal;
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 808, decal_globals);
data_iterator_new(&iterator, global_decal_data);
while ((decal = data_iterator_next(&iterator)) != NULL)
{
if (TEST_FLAG(decal->flags, _decal_locked_bit))
{
SET_FLAG(decal->flags, _decal_locked_bit, FALSE);
decal_globals->locked_count -= 1;
}
if (permanent && TEST_FLAG(decal->flags, _decal_permanent_bit))
{
SET_FLAG(decal->flags, _decal_permanent_bit, FALSE);
decal_globals->permanent_count -= 1;
}
}
if (decal_globals->locked_count != 0)
{
if (!decals_unlock_locked_count_reported)
{
error(
_error_silent,
"### ERROR decals: locked count is invalid (#%d) -- tell Bernie!!",
decal_globals->locked_count);
decals_unlock_locked_count_reported = TRUE;
}
decal_globals->locked_count = 0;
}
if (permanent && decal_globals->permanent_count != 0)
{
if (!decals_unlock_permanent_count_reported)
{
error(
_error_silent,
"### ERROR decals: permanent count is invalid (#%d) -- tell Bernie!!",
decal_globals->permanent_count);
decals_unlock_permanent_count_reported = TRUE;
}
decal_globals->permanent_count = 0;
}
}
decal_geometry.decal_vertex_count = 0;
decal_geometry.decal_surface_count = 0;
return;
}
long decal_get_first_decal_index(
short cluster_index,
short layer)
{
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 1006,
cluster_index>=0 && cluster_index<MAXIMUM_CLUSTERS_PER_STRUCTURE);
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 1007,
layer>=0 && layer<NUMBER_OF_DECAL_LAYERS);
return decal_globals->first_decal_indices[layer][cluster_index];
}
void decal_new_from_media_collision(
long decal_definition_index,
struct collision_result const *collision,
real_vector3d const *velocity,
real radius_modifier,
boolean permanent,
short forced_sequence_index,
struct decal_editor_geometry *editor_geometry)
{
return;
}
void render_debug_decals(
void)
{
if (debug_decals)
{
short decal_surface_vertex_base = 0;
short decal_surface_index;
for (decal_surface_index = 0;
decal_surface_index<decal_geometry.decal_surface_count;
decal_surface_index++)
{
short decal_surface_vertex_count =
decal_geometry.decal_surface_vertex_counts[decal_surface_index];
struct decal_vertex *previous_decal_vertex =
&decal_geometry.decal_vertices[
decal_surface_vertex_base + decal_surface_vertex_count - 1];
short decal_surface_vertex_index;
for (decal_surface_vertex_index = 0;
decal_surface_vertex_index<
decal_geometry.decal_surface_vertex_counts[decal_surface_index];
decal_surface_vertex_index++)
{
struct decal_vertex *decal_vertex =
&decal_geometry.decal_vertices[
decal_surface_vertex_base + decal_surface_vertex_index];
render_debug_line(
TRUE,
&previous_decal_vertex->position,
&decal_vertex->position,
global_real_argb_yellow);
render_debug_point(
TRUE,
&decal_vertex->position,
0.0625f,
decal_vertex->clipped
? global_real_argb_red
: global_real_argb_white);
previous_decal_vertex = decal_vertex;
}
{
short other_decal_surface_index;
for (other_decal_surface_index = 0;
other_decal_surface_index<decal_geometry.decal_surface_count;
other_decal_surface_index++)
{
if (other_decal_surface_index!=decal_surface_index)
{
long other_surface_index =
decal_geometry.decal_surface_indices[other_decal_surface_index];
long surface_index =
decal_geometry.decal_surface_indices[decal_surface_index];
if (surface_index==other_surface_index)
{
error(
_error_silent,
"### ERROR decals: duplicate surface indices in queue -- tell Bernie!!");
}
}
}
}
decal_surface_vertex_base += decal_surface_vertex_count;
}
{
short rendered_cluster_index;
for (rendered_cluster_index = 0;
rendered_cluster_index<render.rendered_cluster_count;
rendered_cluster_index++)
{
short cluster_index =
rendered_cluster_get(rendered_cluster_index)->cluster_index;
short layer;
for (layer = 0; layer<NUMBER_OF_DECAL_LAYERS; layer++)
{
long decal_index = decal_get_first_decal_index(cluster_index, layer);
while (decal_index!=NONE)
{
struct decal_datum *decal = DECAL_GET(decal_index);
char string[64];
sprintf(
string,
"%d",
decal->quad_count * NUMBER_OF_VERTICES_PER_QUADRALATERAL);
render_debug_string_at_point(
FALSE,
&decal->position,
string,
global_real_argb_red);
decal_index = decal->next_decal_index;
}
}
}
}
}
return;
}
static void decal_sprite_get_bounds(
struct decal_definition const *definition,
short sequence_index,
short sprite_index,
real radius,
real_rectangle2d *sprite_bounds,
real_rectangle2d *extent)
{
struct bitmap_group *bitmap_group_definition;
struct bitmap_group_sequence *sequence;
struct bitmap_group_sprite *sprite;
struct bitmap_data *bitmap;
real aspect_scale = 1.0f;
real scale;
real width_scale;
real height_scale;
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 0x107, definition);
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 0x108, sprite_bounds);
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 0x109, extent);
bitmap_group_definition = bitmap_group_get(definition->shader.map.index);
sequence = TAG_BLOCK_GET_ELEMENT(
&bitmap_group_definition->sequences,
sequence_index,
struct bitmap_group_sequence);
sprite = TAG_BLOCK_GET_ELEMENT(
&sequence->sprites,
sprite_index,
struct bitmap_group_sprite);
bitmap = TAG_BLOCK_GET_ELEMENT(
&bitmap_group_definition->bitmaps,
sprite->bitmap_index,
struct bitmap_data);
*sprite_bounds = sprite->bounds;
if (TEST_FLAG(definition->flags,
_decal_definition_preserve_aspect_bit))
{
aspect_scale = ((sprite->bounds.x1 - sprite->bounds.x0)
/ (sprite->bounds.y1 - sprite->bounds.y0))
* ((real)bitmap->height / (real)bitmap->width);
}
scale = radius / definition->runtime_maximum_sprite_extent;
width_scale = (real)bitmap->width * scale;
height_scale = (real)bitmap->height * scale * aspect_scale;
extent->x0 = (0.0f - sprite->registration_point.x) * width_scale;
extent->x1 = (sprite->bounds.x1 - sprite->registration_point.x
- sprite->bounds.x0) * width_scale;
extent->y0 = (0.0f - sprite->registration_point.y) * height_scale;
extent->y1 = (sprite->bounds.y1 - sprite->registration_point.y
- sprite->bounds.y0) * height_scale;
return;
}
pixel32 real_a_rgb_color_to_pixel32(
real alpha,
real_rgb_color const *color)
{
real scale = 255.0f;
pixel32 result;
match_assert(
"..\\bitmaps\\bitmaps_inlines.h",
243,
alpha>=0.0f && alpha<=1.0f);
match_vassert(
"..\\bitmaps\\bitmaps_inlines.h",
244,
valid_real_rgb_color(color),
csprintf(
temporary,
"%s: assert_valid_real_rgb_color(%f, %f, %f)",
"color",
color->red,
color->green,
color->blue));
result = (pixel32)(
((long)__builtin_rint((double)color->blue * scale) & 0xff) |
(((long)__builtin_rint((double)color->green * scale) & 0xff) << 8) |
(((long)__builtin_rint((double)color->red * scale) & 0xff) << 16) |
((long)__builtin_rint((double)alpha * scale) << 24));
return result;
}
void decals_update(
void)
{
if (global_decal_data->valid)
{
struct data_iterator iterator;
data_iterator_new(&iterator, global_decal_data);
while (data_iterator_next(&iterator))
{
decal_update(iterator.datum_index);
}
}
return;
}
void decals_delete_permanent_from_cluster(
short cluster_index)
{
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 887,
cluster_index>=0 && cluster_index<MAXIMUM_CLUSTERS_PER_STRUCTURE);
if (global_decal_data->valid)
{
short layer;
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 893, decal_globals);
for (layer = 0; layer<NUMBER_OF_DECAL_LAYERS; layer++)
{
long decal_index;
if (cluster_index==NONE)
{
decal_index = (layer==0)
? decal_globals->first_disconnected_decal_index
: NONE;
}
else
{
decal_index = decal_get_first_decal_index(cluster_index, layer);
}
while (decal_index!=NONE)
{
struct decal_datum *decal = DECAL_GET(decal_index);
long next_decal_index = decal->next_decal_index;
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 920, decal->cluster_index==cluster_index);
if (TEST_FLAG(decal->flags, _decal_permanent_bit))
{
SET_FLAG(decal->flags, _decal_permanent_bit, FALSE);
decal_globals->permanent_count -= 1;
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 927,
!TEST_FLAG(decal->flags, _decal_locked_bit));
rasterizer_decal_vertices_delete(decal_index);
}
decal_index = next_decal_index;
}
}
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 936, decal_globals->permanent_count>=0);
}
return;
}
void decal_delete(
long decal_index)
{
struct decal_datum *decal= DECAL_GET(decal_index);
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 947, decal);
if (TEST_FLAG(decal->flags, _decal_locked_bit) && !decal_delete_locked_reported)
{
error(
_error_silent,
"### ERROR decals: deleting locked decal (#%d) -- tell Bernie!!",
decal_index);
decal_delete_locked_reported= TRUE;
}
if (TEST_FLAG(decal->flags, _decal_permanent_bit) && !decal_delete_permanent_reported)
{
error(
_error_silent,
"### ERROR decals: deleting permanent decal (#%d) -- tell Bernie!!",
decal_index);
decal_delete_permanent_reported= TRUE;
}
if (decal->next_decal_index!=NONE)
{
DECAL_GET(decal->next_decal_index)->previous_decal_index= decal->previous_decal_index;
}
if (decal->previous_decal_index!=NONE)
{
DECAL_GET(decal->previous_decal_index)->next_decal_index= decal->next_decal_index;
}
else if (decal->cluster_index==NONE)
{
match_assert(
"c:\\halo\\SOURCE\\effects\\decals.c",
987,
decal_globals->first_disconnected_decal_index==decal_index);
decal_globals->first_disconnected_decal_index= decal->next_decal_index;
}
else
{
match_assert(
"c:\\halo\\SOURCE\\effects\\decals.c",
992,
decal_get_first_decal_index(decal->cluster_index, decal->layer)==decal_index);
decal_set_first_decal_index(
decal->cluster_index,
decal->layer,
decal->next_decal_index);
}
datum_delete(global_decal_data, decal_index);
return;
}
static void decal_projection_create(
real_matrix4x3 const *basis,
real_rectangle2d const *extent,
struct decal_projection *projection)
{
real_point3d point;
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 0x410, basis);
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 0x411, projection);
projection->basis = *basis;
projection->extent = *extent;
plane3d_from_point_and_normal(
&projection->plane,
&basis->position,
&basis->up);
projection->projection = projection_from_vector3d(&projection->plane.n);
projection->sign = projection_sign_from_vector3d(
&projection->plane.n,
projection->projection);
point.x = extent->x0 * basis->forward.i
+ extent->y0 * basis->left.i
+ basis->position.x;
point.y = extent->y0 * basis->left.j
+ extent->x0 * basis->forward.j
+ basis->position.y;
point.z = extent->y0 * basis->left.k
+ extent->x0 * basis->forward.k
+ basis->position.z;
project_point3d(
&point,
projection->projection,
projection->sign,
&projection->decal_points2d[0]);
point.x = extent->x1 * basis->forward.i
+ extent->y0 * basis->left.i
+ basis->position.x;
point.y = extent->y0 * basis->left.j
+ extent->x1 * basis->forward.j
+ basis->position.y;
point.z = extent->y0 * basis->left.k
+ extent->x1 * basis->forward.k
+ basis->position.z;
project_point3d(
&point,
projection->projection,
projection->sign,
&projection->decal_points2d[1]);
point.x = extent->x1 * basis->forward.i
+ extent->y1 * basis->left.i
+ basis->position.x;
point.y = extent->y1 * basis->left.j
+ extent->x1 * basis->forward.j
+ basis->position.y;
point.z = extent->x1 * basis->forward.k
+ extent->y1 * basis->left.k
+ basis->position.z;
project_point3d(
&point,
projection->projection,
projection->sign,
&projection->decal_points2d[2]);
point.x = extent->y1 * basis->left.i
+ extent->x0 * basis->forward.i
+ basis->position.x;
point.y = extent->y1 * basis->left.j
+ extent->x0 * basis->forward.j
+ basis->position.y;
point.z = extent->y1 * basis->left.k
+ extent->x0 * basis->forward.k
+ basis->position.z;
project_point3d(
&point,
projection->projection,
projection->sign,
&projection->decal_points2d[3]);
vector_from_points2d(
&projection->decal_points2d[0],
&projection->decal_points2d[1],
&projection->texture_u_axis);
vector_from_points2d(
&projection->decal_points2d[0],
&projection->decal_points2d[3],
&projection->texture_v_axis);
projection->texture_scale = 1.0f / cross_product2d(
&projection->texture_u_axis,
&projection->texture_v_axis);
return;
}
static void decal_clip_to_surface(
struct decal_geometry *geometry,
struct decal_projection const *projection,
long surface_index,
boolean update_surface_queue,
real radius,
short type,
long *surface_queue,
short *surface_queue_write_index,
long *deviant_surface_list,
short *deviant_surface_count)
{
match_assert(
"c:\\halo\\SOURCE\\effects\\decals.c",
1147,
type>=0 && type<NUMBER_OF_DECAL_TYPES);
if (surface_index!=NONE)
{
short working_surface_queue_write_index;
short working_deviant_surface_count;
struct collision_bsp *collision_bsp = global_collision_bsp_get();
struct collision_surface *surface = TAG_BLOCK_GET_ELEMENT(
&collision_bsp->surfaces,
surface_index,
struct collision_surface);
real_plane3d surface_plane;
real surface_angle;
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 1160, projection);
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 1161, geometry);
if (update_surface_queue)
{
match_assert(
"c:\\halo\\SOURCE\\effects\\decals.c",
1165,
surface_queue);
match_assert(
"c:\\halo\\SOURCE\\effects\\decals.c",
1166,
surface_queue_write_index &&
*surface_queue_write_index>=0 &&
*surface_queue_write_index<=MAXIMUM_DECAL_SURFACE_QUEUE_SIZE);
match_assert(
"c:\\halo\\SOURCE\\effects\\decals.c",
1167,
deviant_surface_list);
match_assert(
"c:\\halo\\SOURCE\\effects\\decals.c",
1168,
deviant_surface_count &&
*deviant_surface_count>=0 &&
*deviant_surface_count<=MAXIMUM_DECAL_SURFACE_QUEUE_SIZE);
working_surface_queue_write_index = *surface_queue_write_index;
working_deviant_surface_count = *deviant_surface_count;
}
bsp3d_get_plane_from_designator(
&collision_bsp->bsp3d,
surface->plane_designator,
&surface_plane);
surface_angle = angle_between_normals3d(
&surface_plane.n,
&projection->plane.n);
if (!update_surface_queue ||
surface_angle<=DEGREES_TO_RADIANS(
decal_wrap_parameters[type].minimum_wrap_angle))
{
long edge_index = surface->first_edge_index;
short edge_iteration = 0;
real_point2d surface_point2d;
real_point2d surface_point2d_previous;
real_point2d const *input_points = projection->decal_points2d;
short decal_point_count = 4;
long clip_flags = 0;
do
{
struct collision_edge *edge = TAG_BLOCK_GET_ELEMENT(
&collision_bsp->edges,
edge_index,
struct collision_edge);
boolean surface_on_right = edge->surface_indices[1]==surface_index;
struct collision_vertex *edge_start = TAG_BLOCK_GET_ELEMENT(
&collision_bsp->vertices,
edge->vertex_indices[!surface_on_right],
struct collision_vertex);
real_plane2d surface_edge_plane;
real_point2d *output_points = decal_points2d_temp[edge_iteration&1];
if (edge_iteration==0)
{
struct collision_vertex *edge_end = TAG_BLOCK_GET_ELEMENT(
&collision_bsp->vertices,
edge->vertex_indices[surface_on_right],
struct collision_vertex);
project_point3d(
&edge_end->point,
projection->projection,
projection->sign,
&surface_point2d_previous);
}
project_point3d(
&edge_start->point,
projection->projection,
projection->sign,
&surface_point2d);
if (plane2d_from_points(
&surface_edge_plane,
&surface_point2d,
&surface_point2d_previous))
{
boolean clipped;
decal_point_count = convex_polygon2d_clip_to_plane(
decal_point_count,
input_points,
&surface_edge_plane,
12,
output_points,
&clip_flags,
&clipped,
0.0f);
if (update_surface_queue && clipped &&
working_surface_queue_write_index<MAXIMUM_DECAL_SURFACE_QUEUE_SIZE)
{
struct collision_vertex *edge_end = TAG_BLOCK_GET_ELEMENT(
&collision_bsp->vertices,
edge->vertex_indices[surface_on_right],
struct collision_vertex);
real_vector3d surface_edge_vector;
vector_from_points3d(
&edge_start->point,
&edge_end->point,
&surface_edge_vector);
if (fast_vector_intersects_sphere(
&edge_start->point,
&surface_edge_vector,
&projection->basis.position,
radius * decal_wrap_parameters[type].radius_exclusion_multiplier))
{
long adjacent_surface_index =
edge->surface_indices[!surface_on_right];
short queue_index = 0;
while (adjacent_surface_index!=NONE &&
queue_index<working_surface_queue_write_index)
{
if (surface_queue[queue_index]==adjacent_surface_index)
adjacent_surface_index = NONE;
queue_index++;
}
if (adjacent_surface_index!=NONE)
{
surface_queue[working_surface_queue_write_index++] =
adjacent_surface_index;
}
}
}
}
else
{
decal_point_count = 0;
}
input_points = output_points;
edge_index = edge->edge_indices[surface_on_right];
edge_iteration++;
surface_point2d_previous = surface_point2d;
}
while (edge_index!=surface->first_edge_index && decal_point_count>0);
if (decal_point_count>=NUMBER_OF_VERTICES_PER_TRIANGLE &&
decal_point_count<=MAXIMUM_DECAL_VERTICES-geometry->decal_vertex_count &&
!(surface->flags & (FLAG(_collision_surface_two_sided_bit) |
FLAG(_collision_surface_invisible_bit) |
FLAG(_collision_surface_breakable_bit))))
{
short decal_point_index;
match_assert(
"c:\\halo\\SOURCE\\effects\\decals.c",
1365,
geometry->decal_surface_count<MAXIMUM_DECAL_SURFACE_QUEUE_SIZE);
geometry->decal_surface_indices[geometry->decal_surface_count] =
surface_index;
geometry->decal_surface_vertex_counts[geometry->decal_surface_count] =
decal_point_count;
geometry->decal_surface_count++;
for (decal_point_index = 0;
decal_point_index<decal_point_count;
decal_point_index++)
{
real_vector2d vector;
real texture_y;
vector_from_points2d(
&projection->decal_points2d[0],
&input_points[decal_point_index],
&vector);
texture_y = -cross_product2d(
&vector,
&projection->texture_u_axis) * projection->texture_scale;
geometry->decal_vertices[geometry->decal_vertex_count].texcoord.x =
cross_product2d(
&vector,
&projection->texture_v_axis) * projection->texture_scale;
geometry->decal_vertices[geometry->decal_vertex_count].texcoord.y =
texture_y;
geometry->decal_vertices[geometry->decal_vertex_count].clipped =
TEST_FLAG(clip_flags, decal_point_index);
project_point2d(
&input_points[decal_point_index],
&surface_plane,
projection->projection,
projection->sign,
&geometry->decal_vertices[geometry->decal_vertex_count].position);
if (!TEST_FLAG(clip_flags, decal_point_index))
{
point_from_line3d(
&geometry->decal_vertices[geometry->decal_vertex_count].position,
&surface_plane.n,
rasterizer_debug_options.zoffset,
&geometry->decal_vertices[geometry->decal_vertex_count].position);
}
geometry->decal_vertex_count++;
}
}
}
else
{
long edge_index = surface->first_edge_index;
do
{
struct collision_edge *edge = TAG_BLOCK_GET_ELEMENT(
&collision_bsp->edges,
edge_index,
struct collision_edge);
boolean surface_on_right = edge->surface_indices[1]==surface_index;
struct collision_vertex *edge_start = TAG_BLOCK_GET_ELEMENT(
&collision_bsp->vertices,
edge->vertex_indices[!surface_on_right],
struct collision_vertex);
if (working_surface_queue_write_index<MAXIMUM_DECAL_SURFACE_QUEUE_SIZE)
{
struct collision_vertex *edge_end = TAG_BLOCK_GET_ELEMENT(
&collision_bsp->vertices,
edge->vertex_indices[surface_on_right],
struct collision_vertex);
real_vector3d surface_edge_vector;
vector_from_points3d(
&edge_start->point,
&edge_end->point,
&surface_edge_vector);
if (fast_vector_intersects_sphere(
&edge_start->point,
&surface_edge_vector,
&projection->basis.position,
radius * decal_wrap_parameters[type].radius_exclusion_multiplier))
{
long adjacent_surface_index =
edge->surface_indices[!surface_on_right];
short queue_index = 0;
while (adjacent_surface_index!=NONE &&
queue_index<working_surface_queue_write_index)
{
if (surface_queue[queue_index]==adjacent_surface_index)
adjacent_surface_index = NONE;
queue_index++;
}
if (adjacent_surface_index!=NONE)
{
surface_queue[working_surface_queue_write_index++] =
adjacent_surface_index;
}
}
}
edge_index = edge->edge_indices[surface_on_right];
}
while (edge_index!=surface->first_edge_index);
if (surface_angle<=DEGREES_TO_RADIANS(
decal_wrap_parameters[type].minimum_skip_angle) &&
working_deviant_surface_count<MAXIMUM_DECAL_SURFACE_QUEUE_SIZE)
{
deviant_surface_list[working_deviant_surface_count++] = surface_index;
}
}
if (update_surface_queue)
{
*surface_queue_write_index = working_surface_queue_write_index;
*deviant_surface_count = working_deviant_surface_count;
}
}
return;
}
void decals_disconnect_from_structure_bsp(
void)
{
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 713, global_decal_data);
if (global_decal_data->valid)
{
short cluster_index;
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 719, decal_globals);
for (cluster_index= 0; cluster_index<MAXIMUM_CLUSTERS_PER_STRUCTURE; cluster_index++)
{
short layer;
for (layer= 0; layer<NUMBER_OF_DECAL_LAYERS; layer++)
{
long first_decal_index= decal_get_first_decal_index(cluster_index, layer);
long decal_index= first_decal_index;
long iteration_count= 0;
while (decal_index!=NONE)
{
struct decal_datum *decal= DECAL_GET(decal_index);
long next_decal_index= decal->next_decal_index;
if (iteration_count++>MAXIMUM_DECALS_PER_MAP)
{
error(_error_silent, "### ERROR decals: infinite loop -- tell Bernie!!");
break;
}
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 746, decal->cluster_index==cluster_index);
decal->cluster_index= NONE;
if (decal->next_decal_index==NONE)
{
decal->next_decal_index= decal_globals->first_disconnected_decal_index;
if (decal_globals->first_disconnected_decal_index!=NONE)
{
DECAL_GET(decal_globals->first_disconnected_decal_index)->previous_decal_index= decal_index;
}
decal_globals->first_disconnected_decal_index= first_decal_index;
decal_set_first_decal_index(cluster_index, layer, NONE);
}
decal_index= next_decal_index;
}
}
}
}
return;
}
void decals_reconnect_to_structure_bsp(
void)
{
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 633, global_decal_data);
if (global_decal_data->valid)
{
long decal_index;
long iteration_count= 0;
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 641, decal_globals);
decal_index= decal_globals->first_disconnected_decal_index;
while (decal_index!=NONE)
{
struct decal_datum *decal= DECAL_GET(decal_index);
long next_decal_index= decal->next_decal_index;
struct location location;
if (iteration_count++>MAXIMUM_DECALS_PER_MAP)
{
error(_error_silent, "### ERROR decals: infinite loop -- tell Bernie!!");
break;
}
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 660, decal->cluster_index==NONE);
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 661,
decal->layer>=0 && decal->layer<NUMBER_OF_DECAL_LAYERS);
decal_check(decal_index, FALSE);
scenario_location_from_point(&location, &decal->position);
if (location.cluster_index!=NONE)
{
if (decal->next_decal_index!=NONE)
{
DECAL_GET(decal->next_decal_index)->previous_decal_index= decal->previous_decal_index;
}
if (decal->previous_decal_index!=NONE)
{
DECAL_GET(decal->previous_decal_index)->next_decal_index= decal->next_decal_index;
}
else
{
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 682,
decal_globals->first_disconnected_decal_index==decal_index);
decal_globals->first_disconnected_decal_index= decal->next_decal_index;
}
decal_reinsert(decal_index, location.cluster_index, decal->layer);
}
decal_check(decal_index, FALSE);
decal_index= next_decal_index;
}
}
return;
}
void decal_new_from_collision(
long decal_definition_index,
struct collision_result const *collision,
real_vector3d const *velocity,
real radius_modifier,
boolean permanent,
short forced_sequence_index,
struct decal_editor_geometry *editor_geometry)
{
struct collision_bsp *collision_bsp = global_collision_bsp_get();
boolean reuse_previous_geometry = FALSE;
real_matrix4x3 basis;
real_rectangle2d extent;
real_rectangle2d sprite_bounds;
real radius;
short sequence_index;
short sprite_index;
short bitmap_index;
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 2033, collision);
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 2034, velocity);
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 2035, decals_enabled);
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 2037, !editor_geometry);
while (decal_definition_index!=NONE)
{
short surface_queue_read_index = 0;
short deviant_surface_count = 0;
struct decal_definition *definition = decal_definition_get(decal_definition_index);
struct bitmap_group *bitmap_group = bitmap_group_get(definition->shader.map.index);
if (!reuse_previous_geometry)
{
real_vector3d axis_vector;
real_vector3d tangent;
real_vector3d bitangent;
real cosine;
real sine;
if (TEST_FLAG(definition->flags, _decal_definition_no_random_rotation_bit) &&
dot_product3d(&collision->plane.n, velocity) < -_real_epsilon)
{
cosine = -1.0f;
sine = 0.0f;
if (TEST_FLAG(definition->flags, _decal_definition_SAPIEN_ONLY_snap_to_axis_bit))
{
short projection = projection_from_vector3d(velocity);
real sign = projection_sign_from_vector3d(velocity, projection)
? 1.0f
: -1.0f;
switch (projection)
{
case _x:
set_real_vector3d(&axis_vector, sign, 0.0f, 0.0f);
break;
case _y:
set_real_vector3d(&axis_vector, 0.0f, sign, 0.0f);
break;
case _z:
set_real_vector3d(&axis_vector, 0.0f, 0.0f, sign);
break;
default:
match_vassert("c:\\halo\\SOURCE\\effects\\decals.c", 2120,
FALSE, "### ERROR unsupported projection dimension");
break;
}
if (dot_product3d(&collision->plane.n, velocity) > 0.0f)
{
add_vectors3d(&axis_vector, &collision->plane.n, &axis_vector);
}
else
{
subtract_vectors3d(&axis_vector, &collision->plane.n, &axis_vector);
}
normalize3d(&axis_vector);
cross_product3d(&collision->plane.n, &axis_vector, &tangent);
cross_product3d(&collision->plane.n, &tangent, &bitangent);
if (magnitude_squared3d(&tangent) < _real_epsilon ||
magnitude_squared3d(&bitangent) < _real_epsilon)
{
real reflection_scale = -dot_product3d(velocity, &collision->plane.n);
axis_vector.i = reflection_scale * collision->plane.n.i + velocity->i;
axis_vector.j = reflection_scale * collision->plane.n.j + velocity->j;
axis_vector.k = reflection_scale * collision->plane.n.k + velocity->k;
projection = projection_from_vector3d(&axis_vector);
sign = projection_sign_from_vector3d(&axis_vector, projection)
? 1.0f
: -1.0f;
switch (projection)
{
case _x:
set_real_vector3d(&axis_vector, sign, 0.0f, 0.0f);
break;
case _y:
set_real_vector3d(&axis_vector, 0.0f, sign, 0.0f);
break;
case _z:
set_real_vector3d(&axis_vector, 0.0f, 0.0f, sign);
break;
default:
match_vassert("c:\\halo\\SOURCE\\effects\\decals.c", 2152,
FALSE, "### ERROR unsupported projection dimension");
break;
}
if (dot_product3d(&axis_vector, &collision->plane.n) > 0.0f)
{
add_vectors3d(&axis_vector, &collision->plane.n, &axis_vector);
}
else
{
subtract_vectors3d(&axis_vector, &collision->plane.n, &axis_vector);
}
normalize3d(&axis_vector);
cross_product3d(&collision->plane.n, &axis_vector, &tangent);
cross_product3d(&collision->plane.n, &tangent, &bitangent);
}
}
else
{
cross_product3d(&collision->plane.n, velocity, &tangent);
cross_product3d(&collision->plane.n, &tangent, &bitangent);
}
}
else
{
real angle = real_local_random_range(0.0f, 2.0f * _pi);
cosine = (real)cos(angle);
sine = (real)sin(angle);
perpendicular3d(&collision->plane.n, &tangent);
cross_product3d(&collision->plane.n, &tangent, &bitangent);
}
normalize3d(&tangent);
normalize3d(&bitangent);
basis.forward.i = cosine * bitangent.i - tangent.i * sine;
basis.forward.j = cosine * bitangent.j - tangent.j * sine;
basis.forward.k = cosine * bitangent.k - tangent.k * sine;
basis.left.i = tangent.i * cosine + bitangent.i * sine;
basis.left.j = tangent.j * cosine + bitangent.j * sine;
basis.left.k = tangent.k * cosine + bitangent.k * sine;
basis.up = collision->plane.n;
basis.position = collision->point;
if (forced_sequence_index==NONE)
{
sequence_index = local_random_range(0, (short)bitmap_group->sequences.count);
if (sequence_index>=bitmap_group->sequences.count)
{
error(_error_silent,
"### DECALS: Bernie doesn't understand how local_random_range() works, don't tell Jason!!");
sequence_index = (short)(bitmap_group->sequences.count - 1);
}
}
else
{
sequence_index = forced_sequence_index;
}
sprite_index = 0;
if (radius_modifier==0.0f)
{
radius_modifier = 1.0f;
}
radius = real_local_random_range(
definition->radius_lower_bound,
definition->radius_upper_bound) * radius_modifier;
}
if (bitmap_group->type==_bitmap_group_type_sprites)
{
struct bitmap_group_sequence *sequence = TAG_BLOCK_GET_ELEMENT(
&bitmap_group->sequences,
sequence_index,
struct bitmap_group_sequence);
struct bitmap_group_sprite *sprite = TAG_BLOCK_GET_ELEMENT(
&sequence->sprites,
sprite_index,
struct bitmap_group_sprite);
bitmap_index = sprite->bitmap_index;
decal_sprite_get_bounds(
definition,
sequence_index,
0,
radius,
&sprite_bounds,
&extent);
}
else
{
real aspect = 1.0f;
bitmap_index = 0;
if (TEST_FLAG(definition->flags, _decal_definition_preserve_aspect_bit))
{
struct bitmap_data *bitmap = TAG_BLOCK_GET_ELEMENT(
&bitmap_group->bitmaps,
0,
struct bitmap_data);
aspect = (real)bitmap->height / (real)bitmap->width;
}
extent.x0 = -radius;
extent.x1 = radius;
extent.y0 = -(aspect * radius);
extent.y1 = aspect * radius;
sprite_bounds.x0 = sprite_bounds.y0 = 0.0f;
sprite_bounds.x1 = sprite_bounds.y1 = 1.0f;
}
if (!permanent)
{
if (!_texture_cache_bitmap_get_hardware_format(
TAG_BLOCK_GET_ELEMENT(&bitmap_group->bitmaps, bitmap_index, struct bitmap_data),
FALSE,
TRUE))
{
return;
}
}
{
struct decal_projection projection;
long surface_queue[MAXIMUM_DECAL_SURFACE_QUEUE_SIZE];
long deviant_surface_list[MAXIMUM_DECAL_SURFACE_QUEUE_SIZE];
long deviant_surface_bunch[MAXIMUM_DECAL_SURFACE_QUEUE_SIZE];
struct decal_render_vertex render_vertices[MAXIMUM_DECAL_VERTICES];
short surface_queue_write_index;
real_rectangle3d normal_bounds;
decal_projection_create(&basis, &extent, &projection);
normal_bounds.x0 = basis.up.i;
normal_bounds.x1 = basis.up.i;
normal_bounds.y0 = basis.up.j;
normal_bounds.y1 = basis.up.j;
normal_bounds.z0 = basis.up.k;
normal_bounds.z1 = basis.up.k;
decal_geometry.decal_surface_count = 0;
decal_geometry.decal_vertex_count = 0;
surface_queue[0] = collision->surface_index;
surface_queue_write_index = 1;
while (surface_queue_read_index<surface_queue_write_index)
{
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 2353,
surface_queue_read_index<MAXIMUM_DECAL_SURFACE_QUEUE_SIZE);
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 2354,
surface_queue_write_index<=MAXIMUM_DECAL_SURFACE_QUEUE_SIZE);
decal_clip_to_surface(
&decal_geometry,
&projection,
surface_queue[surface_queue_read_index++],
TRUE,
radius,
definition->type,
surface_queue,
&surface_queue_write_index,
deviant_surface_list,
&deviant_surface_count);
}
if (decal_wrap_parameters[definition->type].wrap && deviant_surface_count>0)
{
short remaining_deviant_surface_count = deviant_surface_count;
while (remaining_deviant_surface_count>0)
{
short deviant_surface_bunch_size = 0;
short deviant_surface_index;
for (deviant_surface_index = 0;
!deviant_surface_bunch_size && deviant_surface_index<deviant_surface_count;
deviant_surface_index++)
{
long deviant_surface = deviant_surface_list[deviant_surface_index];
if (deviant_surface!=NONE)
{
struct collision_surface *surface = TAG_BLOCK_GET_ELEMENT(
&collision_bsp->surfaces,
deviant_surface,
struct collision_surface);
real_plane3d surface_plane1;
short next_deviant_surface_index;
bsp3d_get_plane_from_designator(
&collision_bsp->bsp3d,
surface->plane_designator,
&surface_plane1);
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 2399,
deviant_surface_bunch_size<MAXIMUM_DECAL_SURFACE_QUEUE_SIZE);
deviant_surface_bunch[deviant_surface_bunch_size++] = deviant_surface;
deviant_surface_list[deviant_surface_index] = NONE;
for (next_deviant_surface_index = (short)(deviant_surface_index + 1);
next_deviant_surface_index<deviant_surface_count;
next_deviant_surface_index++)
{
long next_deviant_surface = deviant_surface_list[next_deviant_surface_index];
if (next_deviant_surface!=NONE)
{
struct collision_surface *next_surface = TAG_BLOCK_GET_ELEMENT(
&collision_bsp->surfaces,
next_deviant_surface,
struct collision_surface);
real_plane3d surface_plane2;
real angle;
bsp3d_get_plane_from_designator(
&collision_bsp->bsp3d,
next_surface->plane_designator,
&surface_plane2);
angle = angle_between_normals3d(&surface_plane1.n, &surface_plane2.n);
if (angle<=DEGREES_TO_RADIANS(decal_wrap_parameters[definition->type].minimum_wrap_angle))
{
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 2422,
deviant_surface_bunch_size<MAXIMUM_DECAL_SURFACE_QUEUE_SIZE);
deviant_surface_bunch[deviant_surface_bunch_size++] = next_deviant_surface;
deviant_surface_list[next_deviant_surface_index] = NONE;
}
}
}
{
long closest_surface_index = NONE;
real closest_minimum_distance;
real closest_maximum_distance;
real_plane3d closest_plane;
real_point3d closest_vertex1;
real_point3d closest_vertex2;
short bunch_index;
for (bunch_index = 0;
bunch_index<deviant_surface_bunch_size;
bunch_index++)
{
long bunch_surface_index = deviant_surface_bunch[bunch_index];
struct collision_surface *bunch_surface = TAG_BLOCK_GET_ELEMENT(
&collision_bsp->surfaces,
bunch_surface_index,
struct collision_surface);
long edge_index = bunch_surface->first_edge_index;
do
{
struct collision_edge *edge = TAG_BLOCK_GET_ELEMENT(
&collision_bsp->edges,
edge_index,
struct collision_edge);
boolean surface_on_right = edge->surface_indices[1]==bunch_surface_index;
struct collision_vertex *edge_start = TAG_BLOCK_GET_ELEMENT(
&collision_bsp->vertices,
edge->vertex_indices[!surface_on_right],
struct collision_vertex);
struct collision_vertex *edge_end = TAG_BLOCK_GET_ELEMENT(
&collision_bsp->vertices,
edge->vertex_indices[surface_on_right],
struct collision_vertex);
real minimum_distance = (real)fabs(plane3d_distance_to_point(&projection.plane, &edge_start->point));
real maximum_distance = (real)fabs(plane3d_distance_to_point(&projection.plane, &edge_end->point));
if (minimum_distance>maximum_distance)
{
real swap_distance = minimum_distance;
minimum_distance = maximum_distance;
maximum_distance = swap_distance;
}
if (closest_surface_index==NONE ||
(minimum_distance<=closest_minimum_distance &&
maximum_distance<=closest_maximum_distance))
{
bsp3d_get_plane_from_designator(
&collision_bsp->bsp3d,
bunch_surface->plane_designator,
&closest_plane);
closest_minimum_distance = minimum_distance;
closest_maximum_distance = maximum_distance;
closest_vertex1 = edge_start->point;
closest_vertex2 = edge_end->point;
closest_surface_index = bunch_surface_index;
}
edge_index = edge->edge_indices[surface_on_right];
}
while (edge_index!=bunch_surface->first_edge_index);
}
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 2493,
closest_surface_index!=NONE);
{
struct decal_projection wrapped_projection;
real_vector3d edge_axis;
vector_from_points3d(&closest_vertex1, &closest_vertex2, &edge_axis);
if (normalize3d(&edge_axis) > 0.0f)
{
real sign = triple_product3d(
&closest_plane.n,
&projection.plane.n,
&edge_axis) < 0.0f ? 1.0f : -1.0f;
real angle;
real_matrix4x3 wrap_rotation;
real_matrix4x3 wrap_basis;
angle = angle_between_normals3d(
&closest_plane.n,
&projection.plane.n) * sign;
matrix4x3_rotation_from_axis_and_angle(
&wrap_rotation,
&edge_axis,
(real)sin(angle),
(real)cos(angle));
wrap_basis.position.x = basis.position.x - closest_vertex1.x;
wrap_basis.position.y = basis.position.y - closest_vertex1.y;
wrap_basis.position.z = basis.position.z - closest_vertex1.z;
matrix4x3_transform_point(&wrap_rotation, &wrap_basis.position, &wrap_basis.position);
matrix4x3_transform_normal(&wrap_rotation, &basis.forward, &wrap_basis.forward);
matrix4x3_transform_normal(&wrap_rotation, &basis.left, &wrap_basis.left);
matrix4x3_transform_normal(&wrap_rotation, &basis.up, &wrap_basis.up);
wrap_basis.scale = 1.0f;
wrap_basis.position.x += closest_vertex1.x;
wrap_basis.position.y += closest_vertex1.y;
wrap_basis.position.z += closest_vertex1.z;
decal_projection_create(&wrap_basis, &extent, &wrapped_projection);
normal_bounds.x0 = MIN(wrap_basis.up.i, normal_bounds.x0);
normal_bounds.x1 = MAX(wrap_basis.up.i, normal_bounds.x1);
normal_bounds.y0 = MIN(wrap_basis.up.j, normal_bounds.y0);
normal_bounds.y1 = MAX(wrap_basis.up.j, normal_bounds.y1);
normal_bounds.z0 = MIN(wrap_basis.up.k, normal_bounds.z0);
normal_bounds.z1 = MAX(wrap_basis.up.k, normal_bounds.z1);
}
else
{
error(_error_silent,
"### ERROR: decals: failed to wrap decal around edge -- tell Bernie!!");
wrapped_projection = projection;
}
for (bunch_index = 0;
bunch_index<deviant_surface_bunch_size;
bunch_index++)
{
decal_clip_to_surface(
&decal_geometry,
&wrapped_projection,
deviant_surface_bunch[bunch_index],
FALSE,
radius,
definition->type,
NULL,
NULL,
NULL,
NULL);
}
}
}
remaining_deviant_surface_count -= deviant_surface_bunch_size;
}
}
}
}
if (decal_geometry.decal_surface_count<=0 || decal_geometry.decal_vertex_count<=0)
{
return;
}
{
real_vector3d offset = { 0.0f, 0.0f, 0.0f };
short decal_quad_count = 0;
short decal_surface_index;
long cache_size;
long cache_index;
if (normal_bounds.x1 - normal_bounds.x0<=0.5f &&
normal_bounds.y1 - normal_bounds.y0<=0.5f &&
normal_bounds.z1 - normal_bounds.z0<=0.5f)
{
offset.i = normal_bounds.x0 + normal_bounds.x1;
offset.j = normal_bounds.y0 + normal_bounds.y1;
offset.k = normal_bounds.z0 + normal_bounds.z1;
normalize3d(&offset);
scale_vector3d(&offset, rasterizer_debug_options.zoffset, &offset);
}
for (decal_surface_index = 0;
decal_surface_index<decal_geometry.decal_surface_count;
decal_surface_index++)
{
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 2650,
decal_geometry.decal_surface_vertex_counts[decal_surface_index]>=NUMBER_OF_VERTICES_PER_TRIANGLE);
decal_quad_count += (short)((decal_geometry.decal_surface_vertex_counts[decal_surface_index] - 1) / 2);
}
cache_size = decal_quad_count * sizeof(struct decal_quad);
cache_index = rasterizer_decal_vertices_new(cache_size);
if (cache_index!=NONE)
{
long decal_index = decal_insert(
cache_index,
collision->location.cluster_index,
definition->layer,
NONE,
permanent);
if (decal_index!=NONE)
{
struct decal_datum *decal = DECAL_GET(decal_index);
struct decal_quad *quads = rasterizer_decal_vertices_lock(
(short)cache_index,
cache_size);
if (quads)
{
short decal_vertex_index;
for (decal_vertex_index = 0;
decal_vertex_index<decal_geometry.decal_vertex_count;
decal_vertex_index++)
{
struct decal_vertex *decal_vertex =
&decal_geometry.decal_vertices[decal_vertex_index];
real_point2d texcoord;
long u;
long v;
texcoord.x = PIN((sprite_bounds.x1 - sprite_bounds.x0) * decal_vertex->texcoord.x + sprite_bounds.x0, 0.0f, 1.0f);
texcoord.y = PIN((sprite_bounds.y1 - sprite_bounds.y0) * decal_vertex->texcoord.y + sprite_bounds.y0, 0.0f, 1.0f);
u = fast_ftol((real)floor(PIN(texcoord.x * 32768.0f, 0.0f, 32767.0f) + 0.5f));
v = fast_ftol((real)floor(PIN(texcoord.y * 32768.0f, 0.0f, 32767.0f) + 0.5f));
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 2696,
(u&0x8000)==0 && (v&0x8000)==0);
render_vertices[decal_vertex_index].texcoord[0] = (short)u;
render_vertices[decal_vertex_index].texcoord[1] = (short)v;
render_vertices[decal_vertex_index].position.x = offset.i + decal_vertex->position.x;
render_vertices[decal_vertex_index].position.y = offset.j + decal_vertex->position.y;
render_vertices[decal_vertex_index].position.z = offset.k + decal_vertex->position.z;
}
decal->position = collision->point;
decal->creation_time = game_time_get();
decal->sequence_index = (byte)sequence_index;
decal->sprite_index = 0;
decal->bitmap_index = (byte)bitmap_index;
decal->lifetime = real_local_random_range(
definition->lifetime_lower_bound,
definition->lifetime_upper_bound);
decal->decay_time = real_local_random_range(
definition->decay_time_lower_bound,
definition->decay_time_upper_bound);
decal->definition_index = decal_definition_index;
decal->quad_count = decal_quad_count;
{
real intensity = real_local_random_range(
definition->intensity_lower_bound,
definition->intensity_upper_bound);
real_rgb_color decal_color;
real interpolation = real_local_random_range(0.0f, 1.0f);
rgb_colors_interpolate(
&decal_color,
(definition->flags >> _decal_definition_color_interpolate_in_hsv_bit) & 3,
&definition->color_lower_bound,
&definition->color_upper_bound,
interpolation);
decal->color = real_a_rgb_color_to_pixel32(intensity, &decal_color);
decal->intensity = 255;
}
{
struct decal_quad *quad = quads;
short quad_index = 0;
short decal_surface_vertex_base = 0;
for (decal_surface_index = 0;
decal_surface_index<decal_geometry.decal_surface_count;
decal_surface_index++)
{
short decal_surface_vertex_count =
decal_geometry.decal_surface_vertex_counts[decal_surface_index];
short decal_surface_vertex_index;
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 2744,
decal_surface_vertex_count>=NUMBER_OF_VERTICES_PER_TRIANGLE);
for (decal_surface_vertex_index = 1;
decal_surface_vertex_index + 1<decal_surface_vertex_count;
decal_surface_vertex_index += 2)
{
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 2748,
decal_surface_vertex_index+1<decal_surface_vertex_count);
quad->vertices[0] = render_vertices[decal_surface_vertex_base];
quad->vertices[1] = render_vertices[decal_surface_vertex_base + decal_surface_vertex_index];
quad->vertices[2] = render_vertices[decal_surface_vertex_base + decal_surface_vertex_index + 1];
quad->vertices[3] = render_vertices[(decal_surface_vertex_index + 2>=decal_surface_vertex_count)
? decal_surface_vertex_base
: decal_surface_vertex_base + decal_surface_vertex_index + 2];
quad++;
quad_index++;
}
decal_surface_vertex_base += decal_surface_vertex_count;
}
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 2764,
quad_index==decal_quad_count);
}
rasterizer_decal_vertices_unlock();
reuse_previous_geometry = TEST_FLAG(
definition->flags,
_decal_definition_geometry_inherited_by_next_decal_in_chain_bit);
decal_definition_index = definition->next_decal_in_chain.index;
}
else
{
rasterizer_decal_vertices_delete(cache_index);
if (debug_decals)
{
error(_error_silent, "### WTF decals: failed to lock vertices");
}
return;
}
}
else
{
rasterizer_decal_vertices_delete(cache_index);
if (debug_decals)
{
error(_error_silent,
"### WTF decals: failed to insert decal (locked=%d, permanent=%d)",
decal_globals->locked_count,
decal_globals->permanent_count);
}
return;
}
}
else
{
if (debug_decals)
{
error(_error_silent,
"### WTF decals: failed to allocate vertices (locked=%d, permanent=%d)",
decal_globals->locked_count,
decal_globals->permanent_count);
}
return;
}
}
}
}
return;
}
void decal_new(
long decal_definition_index,
real_point3d const *origin,
real_vector3d const *velocity,
real radius_modifier,
boolean permanent,
short forced_sequence_index,
struct decal_editor_geometry *editor_geometry)
{
if (decals_enabled)
{
unsigned long *local_random_seed_address= get_global_local_random_seed_address();
unsigned long local_random_seed= 0;
struct collision_result collision;
if (permanent)
{
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 1533, local_random_seed_address);
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 1534, origin);
local_random_seed= *local_random_seed_address;
*local_random_seed_address= ((unsigned long const *)origin)[2]
^ ((unsigned long const *)origin)[1]
^ ((unsigned long const *)origin)[0]
^ 0xdeadc0de;
}
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 1550,
global_current_collision_user_depth < MAXIMUM_COLLISION_USER_STACK_DEPTH);
global_current_collision_users[global_current_collision_user_depth++] =
_collision_user_decals;
if (collision_test_vector(
FLAG(_collision_test_front_facing_surfaces_bit) |
FLAG(_collision_test_structure_bit) |
FLAG(_collision_test_media_bit) |
FLAG(_collision_test_try_to_keep_location_valid_bit),
origin,
velocity,
NONE,
&collision))
{
if (collision.type==_collision_result_media)
{
decal_new_from_media_collision(decal_definition_index, &collision, velocity,
radius_modifier, permanent, forced_sequence_index, editor_geometry);
}
else if (collision.type==_collision_result_structure)
{
struct decal_definition *definition= decal_definition_get(decal_definition_index);
if (!TEST_FLAG(definition->flags, _decal_definition_water_effect_bit))
{
decal_new_from_collision(decal_definition_index, &collision, velocity,
radius_modifier, permanent, forced_sequence_index, editor_geometry);
}
}
}
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 1586,
global_current_collision_user_depth > 1);
--global_current_collision_user_depth;
if (permanent)
{
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 1590, local_random_seed_address);
*local_random_seed_address= local_random_seed;
}
}
return;
}
/* ---------- private code */
static void decal_update(
long decal_index)
{
struct decal_datum *decal = DECAL_GET(decal_index);
real elapsed = (game_time_get() - decal->creation_time) * SECONDS_PER_TICK;
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 307, decal->definition_index!=NONE);
decal_definition_get(decal->definition_index);
decal->intensity = 255;
if (!TEST_FLAG(decal->flags, _decal_permanent_bit))
{
if (decal->lifetime == 0.0f || elapsed < decal->lifetime)
{
if (decal->lifetime > 0.0f && decal->decay_time > 0.0f)
{
real f = decal->lifetime - elapsed;
if (f < decal->decay_time)
{
f /= decal->decay_time;
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 322, f>=0.0f && f<=1.0f);
decal->intensity = (byte)fast_ftol(f * 255.0f);
}
}
}
else
{
if (TEST_FLAG(decal->flags, _decal_locked_bit))
{
SET_FLAG(decal->flags, _decal_locked_bit, FALSE);
if (--decal_globals->locked_count < 0 && !decal_locked_count_reported)
{
error(_error_silent,
"### ERROR decals: locked count is invalid (#%d) -- tell Bernie!!",
decal_globals->locked_count);
decal_locked_count_reported = TRUE;
}
}
rasterizer_decal_vertices_delete(decal_index);
}
}
return;
}
static void decal_check(
long decal_index,
boolean layer_check)
{
struct decal_datum *decal = DECAL_GET(decal_index);
if (decal->previous_decal_index!=NONE)
{
short cluster_index= DECAL_GET(decal->previous_decal_index)->cluster_index;
short layer= DECAL_GET(decal->previous_decal_index)->layer;
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 194, cluster_index==decal->cluster_index);
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 195, !layer_check || layer==decal->layer);
}
if (decal->next_decal_index!=NONE)
{
short cluster_index= DECAL_GET(decal->next_decal_index)->cluster_index;
short layer= DECAL_GET(decal->next_decal_index)->layer;
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 203, cluster_index==decal->cluster_index);
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 204, !layer_check || layer==decal->layer);
}
return;
}
static void decal_reinsert(
long decal_index,
short cluster_index,
short layer)
{
long first_decal_index= decal_get_first_decal_index(cluster_index, layer);
struct decal_datum *decal = DECAL_GET(decal_index);
decal->previous_decal_index= NONE;
decal->next_decal_index= first_decal_index;
decal->cluster_index= cluster_index;
decal->layer= layer;
if (first_decal_index!=NONE)
{
DECAL_GET(first_decal_index)->previous_decal_index= decal_index;
}
decal_set_first_decal_index(cluster_index, layer, decal_index);
return;
}
static long decal_insert(
long cache_index,
short cluster_index,
short layer,
long next_decal_index,
boolean permanent)
{
struct data_iterator iterator;
long decal_index = datum_new_at_index(global_decal_data, cache_index);
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 479,
cluster_index>=0 && cluster_index<MAXIMUM_CLUSTERS_PER_STRUCTURE);
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 480,
layer>=0 && layer<NUMBER_OF_DECAL_LAYERS);
if (decal_index != NONE)
{
struct decal_datum *new_decal = DECAL_GET(decal_index);
if (permanent)
{
new_decal->flags = FLAG(_decal_permanent_bit);
decal_globals->permanent_count++;
}
else if (100 * seed_random(get_global_local_random_seed_address()) < 655350)
{
new_decal->flags = FLAG(_decal_locked_bit);
decal_globals->locked_count++;
if (decal_globals->locked_count > 512)
{
short restart_count = 0;
data_iterator_new(&iterator, global_decal_data);
while (decal_globals->locked_count > 256)
{
struct decal_datum *decal = data_iterator_next(&iterator);
if (decal)
{
if (TEST_FLAG(decal->flags, _decal_locked_bit) &&
(100 * seed_random(get_global_local_random_seed_address()) < 2686935 ||
decal->cluster_index == NONE))
{
SET_FLAG(decal->flags, _decal_locked_bit, FALSE);
decal_globals->locked_count--;
}
}
else
{
data_iterator_new(&iterator, global_decal_data);
if (++restart_count >= 100)
{
error(
_error_silent,
"### ERROR decals: failed to unlock decals during insert -- tell Bernie!!");
return NONE;
}
}
}
if (decal_globals->locked_count < 0 && !decal_insert_locked_count_reported)
{
error(
_error_silent,
"### ERROR decals: locked count is invalid (#%d) -- tell Bernie!!",
decal_globals->locked_count);
decal_insert_locked_count_reported = TRUE;
}
}
}
else
{
new_decal->flags = 0;
}
if (next_decal_index != NONE)
{
struct decal_datum *next = DECAL_GET(next_decal_index);
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 556,
next->cluster_index==cluster_index);
if (next->previous_decal_index != NONE)
{
DECAL_GET(next->previous_decal_index)->next_decal_index = decal_index;
}
else
{
decal_set_first_decal_index(cluster_index, layer, decal_index);
}
next->previous_decal_index = decal_index;
new_decal->previous_decal_index = decal_index;
new_decal->next_decal_index = next_decal_index;
new_decal->cluster_index = cluster_index;
new_decal->layer = layer;
}
else
{
decal_reinsert(decal_index, cluster_index, layer);
}
}
else
{
error(_error_silent, "### ERROR failed to insert decal");
}
return decal_index;
}
static void decal_set_first_decal_index(
short cluster_index,
short layer,
long decal_index)
{
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 216,
cluster_index>=0 && cluster_index<MAXIMUM_CLUSTERS_PER_STRUCTURE);
match_assert("c:\\halo\\SOURCE\\effects\\decals.c", 217,
layer>=0 && layer<NUMBER_OF_DECAL_LAYERS);
decal_globals->first_decal_indices[layer][cluster_index]= decal_index;
return;
}
/* ---------- end of file */
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