本文整理汇总了C++中const_entity_handle::viewing_transform方法的典型用法代码示例。如果您正苦于以下问题：C++ const_entity_handle::viewing_transform方法的具体用法？C++ const_entity_handle::viewing_transform怎么用？C++ const_entity_handle::viewing_transform使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类const_entity_handle的用法示例。
在下文中一共展示了const_entity_handle::viewing_transform方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: draw_crosshair_lines
void draw_crosshair_lines(
std::function<void(vec2, vec2, rgba)> callback,
std::function<void(vec2, vec2)> dashed_line_callback,
const interpolation_system& interp,
const const_entity_handle crosshair,
const const_entity_handle character) {
if (crosshair.alive()) {
const auto& cosmos = crosshair.get_cosmos();
const auto& physics = cosmos.systems_temporary.get<physics_system>();
vec2 line_from[2];
vec2 line_to[2];
const auto crosshair_pos = crosshair.viewing_transform(interp).pos;
const auto guns = character.guns_wielded();
auto calculate_color = [&](const const_entity_handle target) {
const auto att = calculate_attitude(character, target);
if (att == attitude_type::WANTS_TO_KILL || att == attitude_type::WANTS_TO_KNOCK_UNCONSCIOUS) {
return red;
}
else if (att == attitude_type::WANTS_TO_HEAL) {
return green;
}
else {
return cyan;
}
};
if (guns.size() >= 1) {
const auto subject_item = guns[0];
const auto& gun = subject_item.get<components::gun>();
const auto rifle_transform = subject_item.viewing_transform(interp);
const auto barrel_center = gun.calculate_barrel_center(rifle_transform);
const auto muzzle = gun.calculate_muzzle_position(rifle_transform);
line_from[0] = muzzle;
const auto proj = crosshair_pos.get_projection_multiplier(barrel_center, muzzle);
if (proj > 1.f) {
line_to[0] = barrel_center + (muzzle - barrel_center) * proj;
const auto raycast = physics.ray_cast_px(line_from[0], line_to[0], filters::bullet(), subject_item);
auto col = cyan;
if (raycast.hit) {
dashed_line_callback(raycast.intersection, line_to[0]);
line_to[0] = raycast.intersection;
col = calculate_color(cosmos[raycast.what_entity]);
}
callback(line_from[0], line_to[0], col);
}
}
if (guns.size() >= 2) {
const auto subject_item = guns[1];
const auto& gun = subject_item.get<components::gun>();
const auto rifle_transform = subject_item.viewing_transform(interp);
const auto barrel_center = gun.calculate_barrel_center(rifle_transform);
const auto muzzle = gun.calculate_muzzle_position(rifle_transform);
line_from[1] = muzzle;
const auto proj = crosshair_pos.get_projection_multiplier(barrel_center, muzzle);
if (proj > 1.f) {
line_to[1] = barrel_center + (muzzle - barrel_center) * proj;
const auto raycast = physics.ray_cast_px(line_from[1], line_to[1], filters::bullet(), subject_item);
auto col = cyan;
if (raycast.hit) {
dashed_line_callback(raycast.intersection, line_to[1]);
line_to[1] = raycast.intersection;
col = calculate_color(cosmos[raycast.what_entity]);
}
callback(line_from[1], line_to[1], col);
}
}
}
}