blender-archive/source/blender/editors/physics/particle_boids.c

/*
 * ***** BEGIN GPL LICENSE BLOCK *****
 *
 * This program 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 2
 * of the License, or (at your option) any later version.
 *
 * This program 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 this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 * The Original Code is Copyright (C) 2009 Janne Karhu.
 * All rights reserved.
 *
 * Contributor(s): Blender Foundation
 *
 * ***** END GPL LICENSE BLOCK *****
 */

/** \file blender/editors/physics/particle_boids.c
 *  \ingroup edphys
 */


#include <stdlib.h>

#include "MEM_guardedalloc.h"

#include "DNA_particle_types.h"

#include "BLI_listbase.h"
#include "BLI_utildefines.h"

#include "BKE_boids.h"
#include "BKE_context.h"
#include "BKE_main.h"
#include "BKE_particle.h"

#include "DEG_depsgraph.h"
#include "DEG_depsgraph_build.h"

#include "RNA_access.h"
#include "RNA_enum_types.h"
#include "RNA_define.h"

#include "WM_api.h"
#include "WM_types.h"

#include "physics_intern.h"

/************************ add/del boid rule operators *********************/
static int rule_add_exec(bContext *C, wmOperator *op)
{
	PointerRNA ptr = CTX_data_pointer_get_type(C, "particle_settings", &RNA_ParticleSettings);
	ParticleSettings *part = ptr.data;
	int type = RNA_enum_get(op->ptr, "type");

	BoidRule *rule;
	BoidState *state;

	if (!part || part->phystype != PART_PHYS_BOIDS)
		return OPERATOR_CANCELLED;

	state = boid_get_current_state(part->boids);

	for (rule = state->rules.first; rule; rule = rule->next)
		rule->flag &= ~BOIDRULE_CURRENT;

	rule = boid_new_rule(type);
	rule->flag |= BOIDRULE_CURRENT;

	BLI_addtail(&state->rules, rule);

	DEG_id_tag_update(&part->id, ID_RECALC_GEOMETRY | ID_RECALC_PSYS_RESET);

	return OPERATOR_FINISHED;
}

void BOID_OT_rule_add(wmOperatorType *ot)
{
	/* identifiers */
	ot->name = "Add Boid Rule";
	ot->description = "Add a boid rule to the current boid state";
	ot->idname = "BOID_OT_rule_add";

	/* api callbacks */
	ot->invoke = WM_menu_invoke;
	ot->exec = rule_add_exec;

	/* flags */
	ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;

	ot->prop = RNA_def_enum(ot->srna, "type", rna_enum_boidrule_type_items, 0, "Type", "");
}
static int rule_del_exec(bContext *C, wmOperator *UNUSED(op))
{
	Main *bmain = CTX_data_main(C);
	PointerRNA ptr = CTX_data_pointer_get_type(C, "particle_settings", &RNA_ParticleSettings);
	ParticleSettings *part = ptr.data;
	BoidRule *rule;
	BoidState *state;

	if (!part || part->phystype != PART_PHYS_BOIDS)
		return OPERATOR_CANCELLED;

	state = boid_get_current_state(part->boids);

	for (rule = state->rules.first; rule; rule = rule->next) {
		if (rule->flag & BOIDRULE_CURRENT) {
			BLI_remlink(&state->rules, rule);
			MEM_freeN(rule);
			break;
		}
	}
	rule = state->rules.first;

	if (rule)
		rule->flag |= BOIDRULE_CURRENT;

	DEG_relations_tag_update(bmain);
	DEG_id_tag_update(&part->id, ID_RECALC_GEOMETRY | ID_RECALC_PSYS_RESET);

	return OPERATOR_FINISHED;
}

void BOID_OT_rule_del(wmOperatorType *ot)
{
	/* identifiers */
	ot->name = "Remove Boid Rule";
	ot->idname = "BOID_OT_rule_del";
	ot->description = "Delete current boid rule";

	/* api callbacks */
	ot->exec = rule_del_exec;

	/* flags */
	ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
}

/************************ move up/down boid rule operators *********************/
static int rule_move_up_exec(bContext *C, wmOperator *UNUSED(op))
{
	PointerRNA ptr = CTX_data_pointer_get_type(C, "particle_settings", &RNA_ParticleSettings);
	ParticleSettings *part = ptr.data;
	BoidRule *rule;
	BoidState *state;

	if (!part || part->phystype != PART_PHYS_BOIDS)
		return OPERATOR_CANCELLED;

	state = boid_get_current_state(part->boids);
	for (rule = state->rules.first; rule; rule = rule->next) {
		if (rule->flag & BOIDRULE_CURRENT && rule->prev) {
			BLI_remlink(&state->rules, rule);
			BLI_insertlinkbefore(&state->rules, rule->prev, rule);

			DEG_id_tag_update(&part->id, ID_RECALC_GEOMETRY | ID_RECALC_PSYS_RESET);
			break;
		}
	}

	return OPERATOR_FINISHED;
}

void BOID_OT_rule_move_up(wmOperatorType *ot)
{
	ot->name = "Move Up Boid Rule";
	ot->description = "Move boid rule up in the list";
	ot->idname = "BOID_OT_rule_move_up";

	ot->exec = rule_move_up_exec;

	/* flags */
	ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
}

static int rule_move_down_exec(bContext *C, wmOperator *UNUSED(op))
{
	PointerRNA ptr = CTX_data_pointer_get_type(C, "particle_settings", &RNA_ParticleSettings);
	ParticleSettings *part = ptr.data;
	BoidRule *rule;
	BoidState *state;

	if (!part || part->phystype != PART_PHYS_BOIDS)
		return OPERATOR_CANCELLED;

	state = boid_get_current_state(part->boids);
	for (rule = state->rules.first; rule; rule = rule->next) {
		if (rule->flag & BOIDRULE_CURRENT && rule->next) {
			BLI_remlink(&state->rules, rule);
			BLI_insertlinkafter(&state->rules, rule->next, rule);

			DEG_id_tag_update(&part->id, ID_RECALC_GEOMETRY | ID_RECALC_PSYS_RESET);
			break;
		}
	}

	return OPERATOR_FINISHED;
}

void BOID_OT_rule_move_down(wmOperatorType *ot)
{
	ot->name = "Move Down Boid Rule";
	ot->description = "Move boid rule down in the list";
	ot->idname = "BOID_OT_rule_move_down";

	ot->exec = rule_move_down_exec;

	/* flags */
	ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
}


/************************ add/del boid state operators *********************/
static int state_add_exec(bContext *C, wmOperator *UNUSED(op))
{
	PointerRNA ptr = CTX_data_pointer_get_type(C, "particle_settings", &RNA_ParticleSettings);
	ParticleSettings *part = ptr.data;
	BoidState *state;

	if (!part || part->phystype != PART_PHYS_BOIDS)
		return OPERATOR_CANCELLED;

	for (state = part->boids->states.first; state; state = state->next)
		state->flag &= ~BOIDSTATE_CURRENT;

	state = boid_new_state(part->boids);
	state->flag |= BOIDSTATE_CURRENT;

	BLI_addtail(&part->boids->states, state);

	return OPERATOR_FINISHED;
}

void BOID_OT_state_add(wmOperatorType *ot)
{
	/* identifiers */
	ot->name = "Add Boid State";
	ot->description = "Add a boid state to the particle system";
	ot->idname = "BOID_OT_state_add";

	/* api callbacks */
	ot->exec = state_add_exec;

	/* flags */
	ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
}
static int state_del_exec(bContext *C, wmOperator *UNUSED(op))
{
	Main *bmain = CTX_data_main(C);
	PointerRNA ptr = CTX_data_pointer_get_type(C, "particle_settings", &RNA_ParticleSettings);
	ParticleSettings *part = ptr.data;
	BoidState *state;

	if (!part || part->phystype != PART_PHYS_BOIDS)
		return OPERATOR_CANCELLED;

	for (state = part->boids->states.first; state; state = state->next) {
		if (state->flag & BOIDSTATE_CURRENT) {
			BLI_remlink(&part->boids->states, state);
			MEM_freeN(state);
			break;
		}
	}

	/* there must be at least one state */
	if (!part->boids->states.first) {
		state = boid_new_state(part->boids);
		BLI_addtail(&part->boids->states, state);
	}
	else
		state = part->boids->states.first;

	state->flag |= BOIDSTATE_CURRENT;

	DEG_relations_tag_update(bmain);
	DEG_id_tag_update(&part->id, ID_RECALC_GEOMETRY | ID_RECALC_PSYS_RESET);

	return OPERATOR_FINISHED;
}

void BOID_OT_state_del(wmOperatorType *ot)
{
	/* identifiers */
	ot->name = "Remove Boid State";
	ot->idname = "BOID_OT_state_del";
	ot->description = "Delete current boid state";

	/* api callbacks */
	ot->exec = state_del_exec;

	/* flags */
	ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
}

/************************ move up/down boid state operators *********************/
static int state_move_up_exec(bContext *C, wmOperator *UNUSED(op))
{
	PointerRNA ptr = CTX_data_pointer_get_type(C, "particle_settings", &RNA_ParticleSettings);
	ParticleSettings *part = ptr.data;
	BoidSettings *boids;
	BoidState *state;

	if (!part || part->phystype != PART_PHYS_BOIDS)
		return OPERATOR_CANCELLED;

	boids = part->boids;

	for (state = boids->states.first; state; state = state->next) {
		if (state->flag & BOIDSTATE_CURRENT && state->prev) {
			BLI_remlink(&boids->states, state);
			BLI_insertlinkbefore(&boids->states, state->prev, state);
			break;
		}
	}

	return OPERATOR_FINISHED;
}

void BOID_OT_state_move_up(wmOperatorType *ot)
{
	ot->name = "Move Up Boid State";
	ot->description = "Move boid state up in the list";
	ot->idname = "BOID_OT_state_move_up";

	ot->exec = state_move_up_exec;

	/* flags */
	ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
}

static int state_move_down_exec(bContext *C, wmOperator *UNUSED(op))
{
	PointerRNA ptr = CTX_data_pointer_get_type(C, "particle_settings", &RNA_ParticleSettings);
	ParticleSettings *part = ptr.data;
	BoidSettings *boids;
	BoidState *state;

	if (!part || part->phystype != PART_PHYS_BOIDS)
		return OPERATOR_CANCELLED;

	boids = part->boids;

	for (state = boids->states.first; state; state = state->next) {
		if (state->flag & BOIDSTATE_CURRENT && state->next) {
			BLI_remlink(&boids->states, state);
			BLI_insertlinkafter(&boids->states, state->next, state);
			DEG_id_tag_update(&part->id, ID_RECALC_GEOMETRY | ID_RECALC_PSYS_RESET);
			break;
		}
	}

	return OPERATOR_FINISHED;
}

void BOID_OT_state_move_down(wmOperatorType *ot)
{
	ot->name = "Move Down Boid State";
	ot->description = "Move boid state down in the list";
	ot->idname = "BOID_OT_state_move_down";

	ot->exec = state_move_down_exec;

	/* flags */
	ot->flag = OPTYPE_REGISTER | OPTYPE_UNDO;
}