X-Git-Url: https://git.localhorst.tv/?a=blobdiff_plain;f=src%2Fworld%2FWorld.cpp;h=e8b665c992366ca2b5f2ecc0efd63447a2f8d73d;hb=549646ac3e5bede5e77031f773649edf8de83608;hp=529968ea7470ce67ae7d9ed2e3a77a173f37e47d;hpb=4db5e3765bc93606e340f704ae27ca840eae7045;p=blank.git

diff --git a/src/world/World.cpp b/src/world/World.cpp
index 529968e..e8b665c 100644
--- a/src/world/World.cpp
+++ b/src/world/World.cpp
@@ -1,9 +1,11 @@
 #include "World.hpp"
 
-#include "../graphics/BlockLighting.hpp"
-#include "../graphics/DirectionalLighting.hpp"
+#include "WorldCollision.hpp"
+#include "../graphics/Viewport.hpp"
 
+#include <iostream>
 #include <limits>
+#include <glm/gtx/io.hpp>
 #include <glm/gtx/transform.hpp>
 
 
@@ -26,84 +28,123 @@ World::World(const Config &config)
 
 	{ // white block
 		BlockType type(true, { 1.0f, 1.0f, 1.0f }, &blockShape);
+		type.label = "White Block";
 		type.block_light = true;
+		type.collision = true;
+		type.collide_block = true;
 		type.fill = block_fill;
 		blockType.Add(type);
 	}
 	{ // white slab
 		BlockType type(true, { 1.0f, 1.0f, 1.0f }, &slabShape);
+		type.label = "White Slab";
 		type.block_light = true;
+		type.collision = true;
+		type.collide_block = true;
 		type.fill = slab_fill;
 		blockType.Add(type);
 	}
 	{ // white stair
 		BlockType type(true, { 1.0f, 1.0f, 1.0f }, &stairShape);
+		type.label = "White Stair";
 		type.block_light = true;
+		type.collision = true;
+		type.collide_block = true;
 		type.fill = stair_fill;
 		blockType.Add(type);
 	}
 
 	{ // red block
 		BlockType type(true, { 1.0f, 0.0f, 0.0f }, &blockShape);
+		type.label = "Red Block";
 		type.block_light = true;
+		type.collision = true;
+		type.collide_block = true;
 		type.fill = block_fill;
 		blockType.Add(type);
 	}
 	{ // red slab
 		BlockType type(true, { 1.0f, 0.0f, 0.0f }, &slabShape);
+		type.label = "Red Slab";
 		type.block_light = true;
+		type.collision = true;
+		type.collide_block = true;
 		type.fill = slab_fill;
 		blockType.Add(type);
 	}
 	{ // red stair
 		BlockType type(true, { 1.0f, 0.0f, 0.0f }, &stairShape);
+		type.label = "Red Stair";
 		type.block_light = true;
+		type.collision = true;
+		type.collide_block = true;
 		type.fill = stair_fill;
 		blockType.Add(type);
 	}
 
 	{ // green block
 		BlockType type(true, { 0.0f, 1.0f, 0.0f }, &blockShape);
+		type.label = "Green Block";
 		type.block_light = true;
+		type.collision = true;
+		type.collide_block = true;
 		type.fill = block_fill;
 		blockType.Add(type);
 	}
 	{ // green slab
 		BlockType type(true, { 0.0f, 1.0f, 0.0f }, &slabShape);
+		type.label = "Green Slab";
 		type.block_light = true;
+		type.collision = true;
+		type.collide_block = true;
 		type.fill = slab_fill;
 		blockType.Add(type);
 	}
 	{ // green stair
 		BlockType type(true, { 0.0f, 1.0f, 0.0f }, &stairShape);
+		type.label = "Green Stair";
 		type.block_light = true;
+		type.collision = true;
+		type.collide_block = true;
 		type.fill = stair_fill;
 		blockType.Add(type);
 	}
 
 	{ // blue block
 		BlockType type(true, { 0.0f, 0.0f, 1.0f }, &blockShape);
+		type.label = "Blue Block";
 		type.block_light = true;
+		type.collision = true;
+		type.collide_block = true;
 		type.fill = block_fill;
 		blockType.Add(type);
 	}
 	{ // blue slab
 		BlockType type(true, { 0.0f, 0.0f, 1.0f }, &slabShape);
+		type.label = "Blue Slab";
 		type.block_light = true;
+		type.collision = true;
+		type.collide_block = true;
 		type.fill = slab_fill;
 		blockType.Add(type);
 	}
 	{ // blue stair
 		BlockType type(true, { 0.0f, 0.0f, 1.0f }, &stairShape);
+		type.label = "Blue Stair";
 		type.block_light = true;
+		type.collision = true;
+		type.collide_block = true;
 		type.fill = stair_fill;
 		blockType.Add(type);
 	}
 
 	{ // glowing yellow block
 		BlockType type(true, { 1.0f, 1.0f, 0.0f }, &blockShape);
+		type.label = "Light";
 		type.luminosity = 15;
 		type.block_light = true;
+		type.collision = true;
+		type.collide_block = true;
 		type.fill = block_fill;
 		blockType.Add(type);
 	}
@@ -113,6 +154,9 @@ World::World(const Config &config)
 	generate.Solids({ 1, 4, 7, 10 });
 
 	player = &AddEntity();
+	player->Name("player");
+	player->Bounds({ { -0.5f, -0.5f, -0.5f }, { 0.5f, 0.5f, 0.5f } });
+	player->WorldCollidable(true);
 	player->Position(config.spawn);
 
 	chunks.GenerateSurrounding(player->ChunkCoords());
@@ -131,12 +175,13 @@ std::vector<Candidate> candidates;
 }
 
 bool World::Intersection(
-		const Ray &ray,
-		const glm::mat4 &M,
-		Chunk **chunk,
-		int *blkid,
-		float *dist,
-		glm::vec3 *normal) {
+	const Ray &ray,
+	const glm::mat4 &M,
+	Chunk *&chunk,
+	int &blkid,
+	float &dist,
+	glm::vec3 &normal
+) {
 	candidates.clear();
 
 	for (Chunk &cur_chunk : chunks.Loaded()) {
@@ -148,39 +193,40 @@ bool World::Intersection(
 
 	if (candidates.empty()) return false;
 
-	Chunk *closest_chunk = nullptr;
-	float closest_dist = std::numeric_limits<float>::infinity();
-	int closest_blkid = -1;
-	glm::vec3 closest_normal;
+	chunk = nullptr;
+	dist = std::numeric_limits<float>::infinity();
+	blkid = -1;
 
 	for (Candidate &cand : candidates) {
-		if (cand.dist > closest_dist) continue;
+		if (cand.dist > dist) continue;
 		int cur_blkid;
 		float cur_dist;
 		glm::vec3 cur_normal;
 		if (cand.chunk->Intersection(ray, M * cand.chunk->Transform(player->ChunkCoords()), cur_blkid, cur_dist, cur_normal)) {
-			if (cur_dist < closest_dist) {
-				closest_chunk = cand.chunk;
-				closest_blkid = cur_blkid;
-				closest_dist = cur_dist;
-				closest_normal = cur_normal;
+			if (cur_dist < dist) {
+				chunk = cand.chunk;
+				blkid = cur_blkid;
+				dist = cur_dist;
+				normal = cur_normal;
 			}
 		}
 	}
 
-	if (chunk) {
-		*chunk = closest_chunk;
-	}
-	if (blkid) {
-		*blkid = closest_blkid;
-	}
-	if (dist) {
-		*dist = closest_dist;
-	}
-	if (normal) {
-		*normal = closest_normal;
+	return chunk;
+}
+
+bool World::Intersection(const Entity &e, std::vector<WorldCollision> &col) {
+	AABB box = e.Bounds();
+	glm::mat4 M = e.Transform(player->ChunkCoords());
+	bool any = false;
+	// TODO: this only needs to check the chunks surrounding the entity's chunk position
+	//       need find out if that is quicker than the rough chunk bounds test
+	for (Chunk &cur_chunk : chunks.Loaded()) {
+		if (cur_chunk.Intersection(box, M, cur_chunk.Transform(player->ChunkCoords()), col)) {
+			any = true;
+		}
 	}
-	return closest_chunk;
+	return any;
 }
 
 
@@ -188,25 +234,78 @@ Chunk &World::PlayerChunk() {
 	return chunks.ForceLoad(player->ChunkCoords());
 }
 
-Chunk &World::Next(const Chunk &to, const glm::tvec3<int> &dir) {
+Chunk &World::Next(const Chunk &to, const glm::ivec3 &dir) {
 	const Chunk::Pos tgt_pos = to.Position() + dir;
 	return chunks.ForceLoad(tgt_pos);
 }
 
 
+namespace {
+
+std::vector<WorldCollision> col;
+
+}
+
 void World::Update(int dt) {
 	for (Entity &entity : entities) {
 		entity.Update(dt);
 	}
+	for (Entity &entity : entities) {
+		col.clear();
+		if (entity.WorldCollidable() && Intersection(entity, col)) {
+			// entity collides with the world
+			Resolve(entity, col);
+		}
+	}
+	for (auto iter = entities.begin(), end = entities.end(); iter != end;) {
+		if (iter->CanRemove()) {
+			iter = entities.erase(iter);
+		} else {
+			++iter;
+		}
+	}
 	chunks.Rebase(player->ChunkCoords());
 	chunks.Update(dt);
 }
 
+void World::Resolve(Entity &e, std::vector<WorldCollision> &col) {
+	// determine displacement for each cardinal axis and move entity accordingly
+	glm::vec3 min_disp(0.0f);
+	glm::vec3 max_disp(0.0f);
+	for (const WorldCollision &c : col) {
+		if (!c.Blocks()) continue;
+		glm::vec3 local_disp(c.normal * c.depth);
+		// swap if neccessary (normal may point away from the entity)
+		if (dot(c.normal, e.Position() - c.BlockCoords()) < 0) {
+			local_disp *= -1;
+		}
+		min_disp = min(min_disp, local_disp);
+		max_disp = max(max_disp, local_disp);
+	}
+	// for each axis
+	// if only one direction is set, use that as the final
+	// if both directions are set, use average
+	glm::vec3 final_disp(0.0f);
+	for (int axis = 0; axis < 3; ++axis) {
+		if (std::abs(min_disp[axis]) > std::numeric_limits<float>::epsilon()) {
+			if (std::abs(max_disp[axis]) > std::numeric_limits<float>::epsilon()) {
+				final_disp[axis] = (min_disp[axis] + max_disp[axis]) * 0.5f;
+			} else {
+				final_disp[axis] = min_disp[axis];
+			}
+		} else if (std::abs(max_disp[axis]) > std::numeric_limits<float>::epsilon()) {
+			final_disp[axis] = max_disp[axis];
+		}
+	}
+	e.Move(final_disp);
+}
+
+
+void World::Render(Viewport &viewport) {
+	viewport.WorldPosition(player->Transform(player->ChunkCoords()));
 
-void World::Render(BlockLighting &chunk_prog, DirectionalLighting &entity_prog) {
-	chunk_prog.Activate();
+	BlockLighting &chunk_prog = viewport.ChunkProgram();
 	chunk_prog.SetFogDensity(fog_density);
-	chunk_prog.SetView(glm::inverse(player->Transform(player->ChunkCoords())));
 
 	for (Chunk &chunk : chunks.Loaded()) {
 		glm::mat4 m(chunk.Transform(player->ChunkCoords()));
@@ -217,10 +316,9 @@ void World::Render(BlockLighting &chunk_prog, DirectionalLighting &entity_prog)
 		}
 	}
 
-	entity_prog.Activate();
+	DirectionalLighting &entity_prog = viewport.EntityProgram();
 	entity_prog.SetLightDirection(light_direction);
 	entity_prog.SetFogDensity(fog_density);
-	entity_prog.SetView(glm::inverse(player->Transform(player->ChunkCoords())));
 
 	for (Entity &entity : entities) {
 		if (entity.HasShape()) {