80 lines
2.1 KiB
C++
80 lines
2.1 KiB
C++
#include "terrain.h"
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#include "terrain/terrain_chunk.h"
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#include "terrain/terrain_modifier.h"
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void Terrain::_bind_methods() {}
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void Terrain::ready() {
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construct_chunk_grid();
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generate_meshes();
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}
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void Terrain::update_modifier_list() {
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this->modifiers.clear();
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for (Variant var : get_children()) {
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if (TerrainModifier * mod{ cast_to<TerrainModifier>(var) }) {
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this->modifiers.push_back(mod);
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}
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}
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}
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void Terrain::construct_chunk_grid() {
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size_t const chunks_per_side{ this->side_length / this->chunk_size };
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Vector3 const origin{ -(float)chunks_per_side / 2.f * (float)this->chunk_size, 0.f, -(float)chunks_per_side / 2.f * (float)this->chunk_size };
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for (size_t y{ 0 }; y < chunks_per_side; ++y) {
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for (size_t x{ 0 }; x < chunks_per_side; ++x) {
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TerrainChunkMesh *chunk{ memnew(TerrainChunkMesh) };
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chunk->set_size(this->chunk_size);
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chunk->set_detail(this->detail);
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chunk->set_terrain(this);
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chunk->set_position(origin + Vector3{ (float)this->chunk_size * (float)x, 0.f, (float)this->chunk_size * (float)y });
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add_child(chunk);
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chunk->set_owner(this);
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this->meshes.push_back(chunk);
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}
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}
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}
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void Terrain::generate_meshes() {
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for (TerrainChunkMesh *mesh : this->meshes) {
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mesh->update_mesh();
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}
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}
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void Terrain::child_entered(Node *node) {
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if (cast_to<TerrainModifier>(node)) {
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update_modifier_list();
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}
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}
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void Terrain::child_exiting(Node *node) {
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if (TerrainModifier * mod{ cast_to<TerrainModifier>(node) }) {
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this->modifiers.erase(mod);
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}
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}
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void Terrain::_notification(int what) {
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switch (what) {
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default:
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return;
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case NOTIFICATION_ENTER_TREE:
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if (!is_ready()) {
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connect("child_entered_tree", callable_mp(this, &self_type::child_entered));
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connect("child_exiting_tree", callable_mp(this, &self_type::child_exiting));
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connect("child_order_changed", callable_mp(this, &self_type::update_modifier_list));
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}
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return;
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return;
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case NOTIFICATION_READY:
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ready();
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return;
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}
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}
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float Terrain::height_at(Vector2 world_coordinate) {
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float height{ 0 };
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for (TerrainModifier *mod : this->modifiers) {
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height = mod->evaluate_at(world_coordinate, height);
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}
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return height;
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}
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