godot/scene/2d/camera_2d.cpp

635 lines
19 KiB
C++

/*************************************************************************/
/* camera_2d.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "camera_2d.h"
#include "scene/scene_string_names.h"
#include "servers/visual_server.h"
void Camera2D::_update_scroll() {
if (!is_inside_tree())
return;
if (get_tree()->is_editor_hint()) {
update(); //will just be drawn
return;
}
if (current) {
ERR_FAIL_COND(custom_viewport && !ObjectDB::get_instance(custom_viewport_id));
Matrix32 xform = get_camera_transform();
if (viewport) {
viewport->set_canvas_transform(xform);
}
get_tree()->call_group(SceneTree::GROUP_CALL_REALTIME, group_name, "_camera_moved", xform);
};
}
void Camera2D::set_zoom(const Vector2 &p_zoom) {
zoom = p_zoom;
Point2 old_smoothed_camera_pos = smoothed_camera_pos;
_update_scroll();
smoothed_camera_pos = old_smoothed_camera_pos;
};
Vector2 Camera2D::get_zoom() const {
return zoom;
};
Matrix32 Camera2D::get_camera_transform() {
if (!get_tree())
return Matrix32();
Size2 screen_size = get_viewport_rect().size;
screen_size = get_viewport_rect().size;
Point2 new_camera_pos = get_global_transform().get_origin();
Point2 ret_camera_pos;
if (!first) {
if (anchor_mode == ANCHOR_MODE_DRAG_CENTER) {
if (h_drag_enabled && !get_tree()->is_editor_hint()) {
camera_pos.x = MIN(camera_pos.x, (new_camera_pos.x + screen_size.x * 0.5 * drag_margin[MARGIN_RIGHT]));
camera_pos.x = MAX(camera_pos.x, (new_camera_pos.x - screen_size.x * 0.5 * drag_margin[MARGIN_LEFT]));
} else {
if (h_ofs < 0) {
camera_pos.x = new_camera_pos.x + screen_size.x * 0.5 * drag_margin[MARGIN_RIGHT] * h_ofs;
} else {
camera_pos.x = new_camera_pos.x + screen_size.x * 0.5 * drag_margin[MARGIN_LEFT] * h_ofs;
}
}
if (v_drag_enabled && !get_tree()->is_editor_hint()) {
camera_pos.y = MIN(camera_pos.y, (new_camera_pos.y + screen_size.y * 0.5 * drag_margin[MARGIN_BOTTOM]));
camera_pos.y = MAX(camera_pos.y, (new_camera_pos.y - screen_size.y * 0.5 * drag_margin[MARGIN_TOP]));
} else {
if (v_ofs < 0) {
camera_pos.y = new_camera_pos.y + screen_size.y * 0.5 * drag_margin[MARGIN_TOP] * v_ofs;
} else {
camera_pos.y = new_camera_pos.y + screen_size.y * 0.5 * drag_margin[MARGIN_BOTTOM] * v_ofs;
}
}
} else if (anchor_mode == ANCHOR_MODE_FIXED_TOP_LEFT) {
camera_pos = new_camera_pos;
}
if (smoothing_enabled && !get_tree()->is_editor_hint()) {
float c = smoothing * get_fixed_process_delta_time();
smoothed_camera_pos = ((camera_pos - smoothed_camera_pos) * c) + smoothed_camera_pos;
ret_camera_pos = smoothed_camera_pos;
// camera_pos=camera_pos*(1.0-smoothing)+new_camera_pos*smoothing;
} else {
ret_camera_pos = smoothed_camera_pos = camera_pos;
}
} else {
ret_camera_pos = smoothed_camera_pos = camera_pos = new_camera_pos;
first = false;
}
Point2 screen_offset = (anchor_mode == ANCHOR_MODE_DRAG_CENTER ? (screen_size * 0.5 * zoom) : Point2());
float angle = get_global_transform().get_rotation();
if (rotating) {
screen_offset = screen_offset.rotated(angle);
}
Rect2 screen_rect(-screen_offset + ret_camera_pos, screen_size * zoom);
if (screen_rect.pos.x + screen_rect.size.x > limit[MARGIN_RIGHT])
screen_rect.pos.x = limit[MARGIN_RIGHT] - screen_rect.size.x;
if (screen_rect.pos.y + screen_rect.size.y > limit[MARGIN_BOTTOM])
screen_rect.pos.y = limit[MARGIN_BOTTOM] - screen_rect.size.y;
if (screen_rect.pos.x < limit[MARGIN_LEFT])
screen_rect.pos.x = limit[MARGIN_LEFT];
if (screen_rect.pos.y < limit[MARGIN_TOP])
screen_rect.pos.y = limit[MARGIN_TOP];
if (offset != Vector2()) {
screen_rect.pos += offset;
if (screen_rect.pos.x + screen_rect.size.x > limit[MARGIN_RIGHT])
screen_rect.pos.x = limit[MARGIN_RIGHT] - screen_rect.size.x;
if (screen_rect.pos.y + screen_rect.size.y > limit[MARGIN_BOTTOM])
screen_rect.pos.y = limit[MARGIN_BOTTOM] - screen_rect.size.y;
if (screen_rect.pos.x < limit[MARGIN_LEFT])
screen_rect.pos.x = limit[MARGIN_LEFT];
if (screen_rect.pos.y < limit[MARGIN_TOP])
screen_rect.pos.y = limit[MARGIN_TOP];
}
camera_screen_center = screen_rect.pos + screen_rect.size * 0.5;
Matrix32 xform;
if (rotating) {
xform.set_rotation(angle);
}
xform.scale_basis(zoom);
xform.set_origin(screen_rect.pos /*.floor()*/);
/*
if (0) {
xform = get_global_transform() * xform;
} else {
xform.elements[2]+=get_global_transform().get_origin();
}
*/
return (xform).affine_inverse();
}
void Camera2D::_notification(int p_what) {
switch (p_what) {
case NOTIFICATION_FIXED_PROCESS: {
_update_scroll();
} break;
case NOTIFICATION_TRANSFORM_CHANGED: {
if (!is_fixed_processing())
_update_scroll();
} break;
case NOTIFICATION_ENTER_TREE: {
if (custom_viewport && ObjectDB::get_instance(custom_viewport_id)) {
viewport = custom_viewport;
} else {
viewport = get_viewport();
}
canvas = get_canvas();
RID vp = viewport->get_viewport();
group_name = "__cameras_" + itos(vp.get_id());
canvas_group_name = "__cameras_c" + itos(canvas.get_id());
add_to_group(group_name);
add_to_group(canvas_group_name);
if (get_tree()->is_editor_hint()) {
set_fixed_process(false);
}
_update_scroll();
first = true;
} break;
case NOTIFICATION_EXIT_TREE: {
if (is_current()) {
if (viewport && !(custom_viewport && !ObjectDB::get_instance(custom_viewport_id))) {
viewport->set_canvas_transform(Matrix32());
}
}
remove_from_group(group_name);
remove_from_group(canvas_group_name);
viewport = NULL;
} break;
case NOTIFICATION_DRAW: {
if (!is_inside_tree() || !get_tree()->is_editor_hint())
break;
Color area_axis_color(0.5, 0.42, 0.87, 0.63);
float area_axis_width = 1;
if (current)
area_axis_width = 3;
Matrix32 inv_camera_transform = get_camera_transform().affine_inverse();
Size2 screen_size = get_viewport_rect().size;
Vector2 screen_endpoints[4] = {
inv_camera_transform.xform(Vector2(0, 0)),
inv_camera_transform.xform(Vector2(screen_size.width, 0)),
inv_camera_transform.xform(Vector2(screen_size.width, screen_size.height)),
inv_camera_transform.xform(Vector2(0, screen_size.height))
};
Matrix32 inv_transform = get_global_transform().affine_inverse(); // undo global space
for (int i = 0; i < 4; i++) {
draw_line(inv_transform.xform(screen_endpoints[i]), inv_transform.xform(screen_endpoints[(i + 1) % 4]), area_axis_color, area_axis_width);
}
} break;
}
}
void Camera2D::set_offset(const Vector2 &p_offset) {
offset = p_offset;
_update_scroll();
}
Vector2 Camera2D::get_offset() const {
return offset;
}
void Camera2D::set_anchor_mode(AnchorMode p_anchor_mode) {
anchor_mode = p_anchor_mode;
_update_scroll();
}
Camera2D::AnchorMode Camera2D::get_anchor_mode() const {
return anchor_mode;
}
void Camera2D::set_rotating(bool p_rotating) {
rotating = p_rotating;
_update_scroll();
}
bool Camera2D::is_rotating() const {
return rotating;
}
void Camera2D::_make_current(Object *p_which) {
if (p_which == this) {
current = true;
_update_scroll();
} else {
current = false;
}
}
void Camera2D::_set_current(bool p_current) {
if (p_current)
make_current();
current = p_current;
}
bool Camera2D::is_current() const {
return current;
}
void Camera2D::make_current() {
if (!is_inside_tree()) {
current = true;
} else {
get_tree()->call_group(SceneTree::GROUP_CALL_REALTIME, group_name, "_make_current", this);
}
}
void Camera2D::clear_current() {
current = false;
if (is_inside_tree()) {
get_tree()->call_group(SceneTree::GROUP_CALL_REALTIME, group_name, "_make_current", (Object *)(NULL));
}
}
void Camera2D::set_limit(Margin p_margin, int p_limit) {
ERR_FAIL_INDEX(p_margin, 4);
limit[p_margin] = p_limit;
}
int Camera2D::get_limit(Margin p_margin) const {
ERR_FAIL_INDEX_V(p_margin, 4, 0);
return limit[p_margin];
}
void Camera2D::set_drag_margin(Margin p_margin, float p_drag_margin) {
ERR_FAIL_INDEX(p_margin, 4);
drag_margin[p_margin] = p_drag_margin;
}
float Camera2D::get_drag_margin(Margin p_margin) const {
ERR_FAIL_INDEX_V(p_margin, 4, 0);
return drag_margin[p_margin];
}
Vector2 Camera2D::get_camera_pos() const {
return camera_pos;
}
void Camera2D::force_update_scroll() {
_update_scroll();
}
void Camera2D::reset_smoothing() {
smoothed_camera_pos = camera_pos;
_update_scroll();
}
void Camera2D::align() {
Size2 screen_size = get_viewport_rect().size;
screen_size = get_viewport_rect().size;
Point2 current_camera_pos = get_global_transform().get_origin();
if (anchor_mode == ANCHOR_MODE_DRAG_CENTER) {
if (h_ofs < 0) {
camera_pos.x = current_camera_pos.x + screen_size.x * 0.5 * drag_margin[MARGIN_RIGHT] * h_ofs;
} else {
camera_pos.x = current_camera_pos.x + screen_size.x * 0.5 * drag_margin[MARGIN_LEFT] * h_ofs;
}
if (v_ofs < 0) {
camera_pos.y = current_camera_pos.y + screen_size.y * 0.5 * drag_margin[MARGIN_TOP] * v_ofs;
} else {
camera_pos.y = current_camera_pos.y + screen_size.y * 0.5 * drag_margin[MARGIN_BOTTOM] * v_ofs;
}
} else if (anchor_mode == ANCHOR_MODE_FIXED_TOP_LEFT) {
camera_pos = current_camera_pos;
}
_update_scroll();
}
void Camera2D::set_follow_smoothing(float p_speed) {
smoothing = p_speed;
if (smoothing > 0 && !(is_inside_tree() && get_tree()->is_editor_hint()))
set_fixed_process(true);
else
set_fixed_process(false);
}
float Camera2D::get_follow_smoothing() const {
return smoothing;
}
Point2 Camera2D::get_camera_screen_center() const {
return camera_screen_center;
}
void Camera2D::set_h_drag_enabled(bool p_enabled) {
h_drag_enabled = p_enabled;
}
bool Camera2D::is_h_drag_enabled() const {
return h_drag_enabled;
}
void Camera2D::set_v_drag_enabled(bool p_enabled) {
v_drag_enabled = p_enabled;
}
bool Camera2D::is_v_drag_enabled() const {
return v_drag_enabled;
}
void Camera2D::set_v_offset(float p_offset) {
v_ofs = p_offset;
}
float Camera2D::get_v_offset() const {
return v_ofs;
}
void Camera2D::set_h_offset(float p_offset) {
h_ofs = p_offset;
}
float Camera2D::get_h_offset() const {
return h_ofs;
}
void Camera2D::_set_old_smoothing(float p_val) {
//compatibility
if (p_val > 0) {
smoothing_enabled = true;
set_follow_smoothing(p_val);
}
}
void Camera2D::set_enable_follow_smoothing(bool p_enabled) {
smoothing_enabled = p_enabled;
}
bool Camera2D::is_follow_smoothing_enabled() const {
return smoothing_enabled;
}
void Camera2D::set_custom_viewport(Node *p_viewport) {
ERR_FAIL_NULL(p_viewport);
if (is_inside_tree()) {
remove_from_group(group_name);
remove_from_group(canvas_group_name);
}
custom_viewport = p_viewport->cast_to<Viewport>();
if (custom_viewport) {
custom_viewport_id = custom_viewport->get_instance_ID();
} else {
custom_viewport_id = 0;
}
if (is_inside_tree()) {
if (custom_viewport)
viewport = custom_viewport;
else
viewport = get_viewport();
RID vp = viewport->get_viewport();
group_name = "__cameras_" + itos(vp.get_id());
canvas_group_name = "__cameras_c" + itos(canvas.get_id());
add_to_group(group_name);
add_to_group(canvas_group_name);
}
}
Node *Camera2D::get_custom_viewport() const {
return custom_viewport;
}
void Camera2D::_bind_methods() {
ObjectTypeDB::bind_method(_MD("set_offset", "offset"), &Camera2D::set_offset);
ObjectTypeDB::bind_method(_MD("get_offset"), &Camera2D::get_offset);
ObjectTypeDB::bind_method(_MD("set_anchor_mode", "anchor_mode"), &Camera2D::set_anchor_mode);
ObjectTypeDB::bind_method(_MD("get_anchor_mode"), &Camera2D::get_anchor_mode);
ObjectTypeDB::bind_method(_MD("set_rotating", "rotating"), &Camera2D::set_rotating);
ObjectTypeDB::bind_method(_MD("is_rotating"), &Camera2D::is_rotating);
ObjectTypeDB::bind_method(_MD("make_current"), &Camera2D::make_current);
ObjectTypeDB::bind_method(_MD("clear_current"), &Camera2D::clear_current);
ObjectTypeDB::bind_method(_MD("_make_current"), &Camera2D::_make_current);
ObjectTypeDB::bind_method(_MD("_update_scroll"), &Camera2D::_update_scroll);
ObjectTypeDB::bind_method(_MD("_set_current", "current"), &Camera2D::_set_current);
ObjectTypeDB::bind_method(_MD("is_current"), &Camera2D::is_current);
ObjectTypeDB::bind_method(_MD("set_limit", "margin", "limit"), &Camera2D::set_limit);
ObjectTypeDB::bind_method(_MD("get_limit", "margin"), &Camera2D::get_limit);
ObjectTypeDB::bind_method(_MD("set_v_drag_enabled", "enabled"), &Camera2D::set_v_drag_enabled);
ObjectTypeDB::bind_method(_MD("is_v_drag_enabled"), &Camera2D::is_v_drag_enabled);
ObjectTypeDB::bind_method(_MD("set_h_drag_enabled", "enabled"), &Camera2D::set_h_drag_enabled);
ObjectTypeDB::bind_method(_MD("is_h_drag_enabled"), &Camera2D::is_h_drag_enabled);
ObjectTypeDB::bind_method(_MD("set_v_offset", "ofs"), &Camera2D::set_v_offset);
ObjectTypeDB::bind_method(_MD("get_v_offset"), &Camera2D::get_v_offset);
ObjectTypeDB::bind_method(_MD("set_h_offset", "ofs"), &Camera2D::set_h_offset);
ObjectTypeDB::bind_method(_MD("get_h_offset"), &Camera2D::get_h_offset);
ObjectTypeDB::bind_method(_MD("set_drag_margin", "margin", "drag_margin"), &Camera2D::set_drag_margin);
ObjectTypeDB::bind_method(_MD("get_drag_margin", "margin"), &Camera2D::get_drag_margin);
ObjectTypeDB::bind_method(_MD("get_camera_pos"), &Camera2D::get_camera_pos);
ObjectTypeDB::bind_method(_MD("get_camera_screen_center"), &Camera2D::get_camera_screen_center);
ObjectTypeDB::bind_method(_MD("set_zoom", "zoom"), &Camera2D::set_zoom);
ObjectTypeDB::bind_method(_MD("get_zoom"), &Camera2D::get_zoom);
ObjectTypeDB::bind_method(_MD("set_custom_viewport", "viewport:Viewport"), &Camera2D::set_custom_viewport);
ObjectTypeDB::bind_method(_MD("get_custom_viewport:Viewport"), &Camera2D::get_custom_viewport);
ObjectTypeDB::bind_method(_MD("set_follow_smoothing", "follow_smoothing"), &Camera2D::set_follow_smoothing);
ObjectTypeDB::bind_method(_MD("get_follow_smoothing"), &Camera2D::get_follow_smoothing);
ObjectTypeDB::bind_method(_MD("set_enable_follow_smoothing", "follow_smoothing"), &Camera2D::set_enable_follow_smoothing);
ObjectTypeDB::bind_method(_MD("is_follow_smoothing_enabled"), &Camera2D::is_follow_smoothing_enabled);
ObjectTypeDB::bind_method(_MD("force_update_scroll"), &Camera2D::force_update_scroll);
ObjectTypeDB::bind_method(_MD("reset_smoothing"), &Camera2D::reset_smoothing);
ObjectTypeDB::bind_method(_MD("align"), &Camera2D::align);
ObjectTypeDB::bind_method(_MD("_set_old_smoothing", "follow_smoothing"), &Camera2D::_set_old_smoothing);
ADD_PROPERTYNZ(PropertyInfo(Variant::VECTOR2, "offset"), _SCS("set_offset"), _SCS("get_offset"));
ADD_PROPERTY(PropertyInfo(Variant::INT, "anchor_mode", PROPERTY_HINT_ENUM, "Fixed TopLeft,Drag Center"), _SCS("set_anchor_mode"), _SCS("get_anchor_mode"));
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "rotating"), _SCS("set_rotating"), _SCS("is_rotating"));
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "current"), _SCS("_set_current"), _SCS("is_current"));
ADD_PROPERTY(PropertyInfo(Variant::VECTOR2, "zoom"), _SCS("set_zoom"), _SCS("get_zoom"));
ADD_PROPERTYI(PropertyInfo(Variant::INT, "limit/left"), _SCS("set_limit"), _SCS("get_limit"), MARGIN_LEFT);
ADD_PROPERTYI(PropertyInfo(Variant::INT, "limit/top"), _SCS("set_limit"), _SCS("get_limit"), MARGIN_TOP);
ADD_PROPERTYI(PropertyInfo(Variant::INT, "limit/right"), _SCS("set_limit"), _SCS("get_limit"), MARGIN_RIGHT);
ADD_PROPERTYI(PropertyInfo(Variant::INT, "limit/bottom"), _SCS("set_limit"), _SCS("get_limit"), MARGIN_BOTTOM);
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "drag_margin/h_enabled"), _SCS("set_h_drag_enabled"), _SCS("is_h_drag_enabled"));
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "drag_margin/v_enabled"), _SCS("set_v_drag_enabled"), _SCS("is_v_drag_enabled"));
ADD_PROPERTY(PropertyInfo(Variant::BOOL, "smoothing/enable"), _SCS("set_enable_follow_smoothing"), _SCS("is_follow_smoothing_enabled"));
ADD_PROPERTY(PropertyInfo(Variant::REAL, "smoothing/speed"), _SCS("set_follow_smoothing"), _SCS("get_follow_smoothing"));
//compatibility
ADD_PROPERTY(PropertyInfo(Variant::REAL, "smoothing", PROPERTY_HINT_NONE, "", 0), _SCS("_set_old_smoothing"), _SCS("get_follow_smoothing"));
ADD_PROPERTYI(PropertyInfo(Variant::REAL, "drag_margin/left", PROPERTY_HINT_RANGE, "0,1,0.01"), _SCS("set_drag_margin"), _SCS("get_drag_margin"), MARGIN_LEFT);
ADD_PROPERTYI(PropertyInfo(Variant::REAL, "drag_margin/top", PROPERTY_HINT_RANGE, "0,1,0.01"), _SCS("set_drag_margin"), _SCS("get_drag_margin"), MARGIN_TOP);
ADD_PROPERTYI(PropertyInfo(Variant::REAL, "drag_margin/right", PROPERTY_HINT_RANGE, "0,1,0.01"), _SCS("set_drag_margin"), _SCS("get_drag_margin"), MARGIN_RIGHT);
ADD_PROPERTYI(PropertyInfo(Variant::REAL, "drag_margin/bottom", PROPERTY_HINT_RANGE, "0,1,0.01"), _SCS("set_drag_margin"), _SCS("get_drag_margin"), MARGIN_BOTTOM);
BIND_CONSTANT(ANCHOR_MODE_DRAG_CENTER);
BIND_CONSTANT(ANCHOR_MODE_FIXED_TOP_LEFT);
}
Camera2D::Camera2D() {
anchor_mode = ANCHOR_MODE_DRAG_CENTER;
rotating = false;
current = false;
limit[MARGIN_LEFT] = -10000000;
limit[MARGIN_TOP] = -10000000;
limit[MARGIN_RIGHT] = 10000000;
limit[MARGIN_BOTTOM] = 10000000;
drag_margin[MARGIN_LEFT] = 0.2;
drag_margin[MARGIN_TOP] = 0.2;
drag_margin[MARGIN_RIGHT] = 0.2;
drag_margin[MARGIN_BOTTOM] = 0.2;
camera_pos = Vector2();
first = true;
smoothing_enabled = false;
custom_viewport = NULL;
custom_viewport_id = 0;
smoothing = 5.0;
zoom = Vector2(1, 1);
h_drag_enabled = true;
v_drag_enabled = true;
h_ofs = 0;
v_ofs = 0;
}