Nuevo funcionamiento TALANES

source/A4B1/enemy.cpp

@@ -1,10 +1,14 @@
 #include "raylib.h"
 #include <cmath>
+#include <algorithm>
+#include <queue>
+#include <vector>
+#include <limits>
 
 extern Vector3 playerPosition;
 extern bool IsSolidAt(Vector3 position, float radius);
 
-const int NPC_COUNT = 12;
+const int NPC_COUNT = 20;
 
 Vector3 enemyPosition[NPC_COUNT] =
 {
@@ -21,17 +25,349 @@ Vector3 enemyPosition[NPC_COUNT] =
 	{ -28.0f, 1.0f, -68.0f },
 	{  28.0f, 1.0f, -68.0f },
 	{ -28.0f, 1.0f,  68.0f },
-	{  28.0f, 1.0f,  68.0f }
+	{  28.0f, 1.0f,  68.0f },
+
+	{ -60.0f, 1.0f, -52.0f },
+	{  60.0f, 1.0f, -52.0f },
+	{ -60.0f, 1.0f,  52.0f },
+	{  60.0f, 1.0f,  52.0f },
+
+	{ -16.0f, 1.0f, -48.0f },
+	{  16.0f, 1.0f, -48.0f },
+	{ -16.0f, 1.0f,  48.0f },
+	{  16.0f, 1.0f,  48.0f }
 };
 
 float enemyWalkTime[NPC_COUNT] = {};
 float enemyStunTime[NPC_COUNT] = {};
 float enemySpin[NPC_COUNT] = {};
+bool enemyMoving[NPC_COUNT] = {};
 
-const float enemySpeed = 2.4f;
+const float enemySpeed = 5.5f;
 const float enemyStunDuration = 2.5f;
 
-bool enemyMoving[NPC_COUNT] = {};
+static bool showEnemyPaths = false;
+
+static const int GRID_SIZE = 41;
+static const float CELL_SIZE = 4.0f;
+static const float GRID_OFFSET = 20.0f;
+
+struct GridNode
+{
+	int x;
+	int z;
+
+	bool operator==(const GridNode& other) const
+	{
+		return x == other.x && z == other.z;
+	}
+};
+
+static std::vector<GridNode> enemyPath[NPC_COUNT];
+
+static int WorldToGridX(float x)
+{
+	return (int)std::round(x / CELL_SIZE + GRID_OFFSET);
+}
+
+static int WorldToGridZ(float z)
+{
+	return (int)std::round(z / CELL_SIZE + GRID_OFFSET);
+}
+
+static Vector3 GridToWorld(int x, int z)
+{
+	return
+	{
+		(x - GRID_OFFSET) * CELL_SIZE,
+		1.0f,
+		(z - GRID_OFFSET) * CELL_SIZE
+	};
+}
+
+static bool IsInsideGrid(int x, int z)
+{
+	return
+	x >= 0 &&
+	x < GRID_SIZE &&
+	z >= 0 &&
+	z < GRID_SIZE;
+}
+
+static bool IsWalkableCell(int x, int z)
+{
+	if (!IsInsideGrid(x, z))
+		return false;
+
+	Vector3 position = GridToWorld(x, z);
+
+	return !IsSolidAt(position, 0.42f);
+}
+
+static float GridDistance(
+	int x1,
+	int z1,
+	int x2,
+	int z2
+)
+{
+	float dx = (float)(x1 - x2);
+	float dz = (float)(z1 - z2);
+
+	return std::sqrt(dx * dx + dz * dz);
+}
+
+static std::vector<GridNode> FindPath(
+	Vector3 startWorld,
+	Vector3 targetWorld
+)
+{
+	GridNode start =
+	{
+		WorldToGridX(startWorld.x),
+		WorldToGridZ(startWorld.z)
+	};
+
+	GridNode target =
+	{
+		WorldToGridX(targetWorld.x),
+		WorldToGridZ(targetWorld.z)
+	};
+
+	if (!IsInsideGrid(start.x, start.z))
+		return {};
+
+	if (!IsInsideGrid(target.x, target.z))
+		return {};
+
+	// Si el destino está ocupado por un mueble,
+	// buscamos la celda caminable más cercana.
+	if (!IsWalkableCell(target.x, target.z))
+	{
+		bool found = false;
+
+		for (int radius = 1; radius <= 5 && !found; radius++)
+		{
+			for (int z = target.z - radius;
+				 z <= target.z + radius && !found;
+			z++)
+				 {
+					 for (int x = target.x - radius;
+						  x <= target.x + radius;
+					 x++)
+						  {
+							  if (IsWalkableCell(x, z))
+							  {
+								  target = {x, z};
+								  found = true;
+								  break;
+							  }
+						  }
+				 }
+		}
+
+		if (!found)
+			return {};
+	}
+
+	if (!IsWalkableCell(start.x, start.z))
+		return {};
+
+	struct Node
+	{
+		int x;
+		int z;
+		float g;
+		float f;
+	};
+
+	std::vector<Node> open;
+	std::vector<bool> closed(
+		GRID_SIZE * GRID_SIZE,
+		false
+	);
+
+	std::vector<GridNode> cameFrom(
+		GRID_SIZE * GRID_SIZE,
+		{-1, -1}
+	);
+
+	std::vector<float> gScore(
+		GRID_SIZE * GRID_SIZE,
+		std::numeric_limits<float>::infinity()
+	);
+
+	auto indexOf =
+	[](int x, int z)
+	{
+		return z * GRID_SIZE + x;
+	};
+
+	gScore[indexOf(start.x, start.z)] = 0.0f;
+
+	open.push_back(
+		{
+			start.x,
+			start.z,
+			0.0f,
+			GridDistance(
+				start.x,
+				start.z,
+				target.x,
+				target.z
+			)
+		}
+	);
+
+	const int directions[4][2] =
+	{
+		{ 1, 0 },
+		{-1, 0 },
+		{ 0, 1 },
+		{ 0,-1 }
+	};
+
+	while (!open.empty())
+	{
+		int best = 0;
+
+		for (int i = 1; i < (int)open.size(); i++)
+		{
+			if (open[i].f < open[best].f)
+				best = i;
+		}
+
+		Node current = open[best];
+		open.erase(open.begin() + best);
+
+		if (current.x == target.x &&
+			current.z == target.z)
+		{
+			std::vector<GridNode> path;
+
+			GridNode currentNode =
+			{
+				target.x,
+				target.z
+			};
+
+			while (!(currentNode == start))
+			{
+				path.push_back(currentNode);
+
+				GridNode previous =
+				cameFrom[
+					indexOf(
+						currentNode.x,
+			 currentNode.z
+					)
+				];
+
+				if (previous.x < 0)
+				{
+					path.clear();
+					return path;
+				}
+
+				currentNode = previous;
+			}
+
+			path.push_back(start);
+
+			std::reverse(
+				path.begin(),
+						 path.end()
+			);
+
+			return path;
+		}
+
+		int currentIndex =
+		indexOf(current.x, current.z);
+
+		if (closed[currentIndex])
+			continue;
+
+		closed[currentIndex] = true;
+
+		for (const auto& direction : directions)
+		{
+			int nx = current.x + direction[0];
+			int nz = current.z + direction[1];
+
+			if (!IsInsideGrid(nx, nz))
+				continue;
+
+			if (!IsWalkableCell(nx, nz))
+				continue;
+
+			int nextIndex = indexOf(nx, nz);
+
+			if (closed[nextIndex])
+				continue;
+
+			float newG = current.g + 1.0f;
+
+			if (newG < gScore[nextIndex])
+			{
+				gScore[nextIndex] = newG;
+
+				cameFrom[nextIndex] =
+				{
+					current.x,
+					current.z
+				};
+
+				float h =
+				GridDistance(
+					nx,
+				 nz,
+				 target.x,
+				 target.z
+				);
+
+				open.push_back(
+					{
+						nx,
+						nz,
+						newG,
+						newG + h
+					}
+				);
+			}
+		}
+	}
+
+	return {};
+}
+
+static bool PositionIsFreeForEnemy(
+	Vector3 position,
+	int ignoreIndex
+)
+{
+	if (IsSolidAt(position, 0.45f))
+		return false;
+
+	for (int i = 0; i < NPC_COUNT; i++)
+	{
+		if (i == ignoreIndex)
+			continue;
+
+		float dx =
+		enemyPosition[i].x -
+		position.x;
+
+		float dz =
+		enemyPosition[i].z -
+		position.z;
+
+		if (dx * dx + dz * dz < 0.75f * 0.75f)
+			return false;
+	}
+
+	return true;
+}
 
 void MoveEnemyWithCollision(
 	int index,
@@ -39,23 +375,206 @@ void MoveEnemyWithCollision(
 	float moveZ
 )
 {
-	Vector3 nextX = enemyPosition[index];
+	Vector3 nextX =
+	enemyPosition[index];
 
 	nextX.x += moveX;
 
-	if (!IsSolidAt(nextX, 0.45f))
+	if (PositionIsFreeForEnemy(nextX, index))
 		enemyPosition[index].x = nextX.x;
 
-	Vector3 nextZ = enemyPosition[index];
+	Vector3 nextZ =
+	enemyPosition[index];
 
 	nextZ.z += moveZ;
 
-	if (!IsSolidAt(nextZ, 0.45f))
+	if (PositionIsFreeForEnemy(nextZ, index))
 		enemyPosition[index].z = nextZ.z;
 }
 
+static void RecalculatePath(int index)
+{
+	enemyPath[index] =
+	FindPath(
+		enemyPosition[index],
+		playerPosition
+	);
+}
+
+static void MoveEnemyAlongPath(
+	int index,
+	float deltaTime
+)
+{
+	if (enemyPath[index].size() < 2)
+	{
+		enemyMoving[index] = false;
+		return;
+	}
+
+	Vector3 target =
+	GridToWorld(
+		enemyPath[index][1].x,
+		enemyPath[index][1].z
+	);
+
+	float dx =
+	target.x -
+	enemyPosition[index].x;
+
+	float dz =
+	target.z -
+	enemyPosition[index].z;
+
+	float distance =
+	std::sqrt(dx * dx + dz * dz);
+
+	if (distance < 0.18f)
+	{
+		enemyPath[index].erase(
+			enemyPath[index].begin()
+		);
+
+		return;
+	}
+
+	dx /= distance;
+	dz /= distance;
+
+	MoveEnemyWithCollision(
+		index,
+		dx * enemySpeed * deltaTime,
+		dz * enemySpeed * deltaTime
+	);
+
+	enemyMoving[index] = true;
+	enemyWalkTime[index] += deltaTime * 9.0f;
+}
+
+static int FindClosestEnemy()
+{
+	int best = 0;
+	float bestDistance =
+	std::numeric_limits<float>::infinity();
+
+	for (int i = 0; i < NPC_COUNT; i++)
+	{
+		float dx =
+		enemyPosition[i].x -
+		playerPosition.x;
+
+		float dz =
+		enemyPosition[i].z -
+		playerPosition.z;
+
+		float distance =
+		dx * dx + dz * dz;
+
+		if (distance < bestDistance)
+		{
+			bestDistance = distance;
+			best = i;
+		}
+	}
+
+	return best;
+}
+
+static bool HasNearbyTalan()
+{
+	for (int i = 0; i < NPC_COUNT; i++)
+	{
+		float dx =
+		enemyPosition[i].x -
+		playerPosition.x;
+
+		float dz =
+		enemyPosition[i].z -
+		playerPosition.z;
+
+		float distance =
+		std::sqrt(dx * dx + dz * dz);
+
+		if (distance < 28.0f)
+			return true;
+	}
+
+	return false;
+}
+
+static void TeleportOneTalanToPlayerArea()
+{
+	int index = FindClosestEnemy();
+
+	float bestDistance = 18.0f;
+
+	for (int attempt = 0; attempt < 40; attempt++)
+	{
+		float angle =
+		(float)attempt *
+		(PI * 2.0f / 40.0f);
+
+		float distance =
+		bestDistance +
+		(attempt % 5) * 1.5f;
+
+		Vector3 position =
+		{
+			playerPosition.x +
+			std::cos(angle) * distance,
+
+			1.0f,
+
+			playerPosition.z +
+			std::sin(angle) * distance
+		};
+
+		if (!PositionIsFreeForEnemy(
+			position,
+			index))
+		{
+			continue;
+		}
+
+		std::vector<GridNode> testPath =
+		FindPath(
+			position,
+		   playerPosition
+		);
+
+		if (!testPath.empty())
+		{
+			enemyPosition[index] =
+			position;
+
+			enemyWalkTime[index] = 0.0f;
+			enemyStunTime[index] = 0.0f;
+			enemySpin[index] = 0.0f;
+
+			enemyPath[index] =
+			testPath;
+
+			return;
+		}
+	}
+}
+
 void UpdateEnemy(float deltaTime)
 {
+	// P muestra/oculta las rutas.
+	if (IsKeyPressed(KEY_P))
+	{
+		showEnemyPaths =
+		!showEnemyPaths;
+	}
+
+	// Siempre debe haber un talán relativamente
+	// cerca del jugador.
+	if (!HasNearbyTalan())
+	{
+		TeleportOneTalanToPlayerArea();
+	}
+
 	for (int i = 0; i < NPC_COUNT; i++)
 	{
 		float dx =
@@ -67,10 +586,7 @@ void UpdateEnemy(float deltaTime)
 		enemyPosition[i].z;
 
 		float distance =
-		std::sqrt(
-			dx * dx +
-			dz * dz
-		);
+		std::sqrt(dx * dx + dz * dz);
 
 		// =========================================
 		// MAREADO
@@ -116,24 +632,23 @@ void UpdateEnemy(float deltaTime)
 		}
 
 		// =========================================
-		// SEGUIR JUGADOR
+		// RUTA INTELIGENTE
 		// =========================================
 
+		// Recalcular frecuentemente para que los talanes
+		// reaccionen si el jugador cambia de dirección.
+		if (enemyPath[i].empty() ||
+			((int)(GetTime() * 4.0) + i) % 5 == 0)
+		{
+			RecalculatePath(i);
+		}
+
 		if (distance > 1.8f)
 		{
-			dx /= distance;
-			dz /= distance;
-
-			MoveEnemyWithCollision(
+			MoveEnemyAlongPath(
 				i,
-				dx * enemySpeed * deltaTime,
-				dz * enemySpeed * deltaTime
+				deltaTime
 			);
-
-			enemyWalkTime[i] +=
-			deltaTime * 9.0f;
-
-			enemyMoving[i] = true;
 		}
 		else
 		{
@@ -195,10 +710,6 @@ void TeleportEnemyNearPlayer(
 		index >= NPC_COUNT)
 		return;
 
-	// =========================================
-	// CONSERVAR LA DISTANCIA ACTUAL
-	// =========================================
-
 	float dx =
 	enemyPosition[index].x -
 	playerPosition.x;
@@ -216,10 +727,6 @@ void TeleportEnemyNearPlayer(
 	if (oldDistance < 3.0f)
 		oldDistance = 3.0f;
 
-	// =========================================
-	// BUSCAR OTRA DIRECCIÓN
-	// =========================================
-
 	float baseAngle =
 	std::atan2(
 		dz,
@@ -244,17 +751,23 @@ void TeleportEnemyNearPlayer(
 			std::sin(angle) * oldDistance
 		};
 
-		if (!IsSolidAt(newPosition, 0.45f))
+		if (!PositionIsFreeForEnemy(
+			newPosition,
+			index))
 		{
-			enemyPosition[index] =
-			newPosition;
-
-			enemyStunTime[index] = 0.0f;
-			enemySpin[index] = 0.0f;
-			enemyWalkTime[index] = 0.0f;
-
-			return;
+			continue;
 		}
+
+		enemyPosition[index] =
+		newPosition;
+
+		enemyStunTime[index] = 0.0f;
+		enemySpin[index] = 0.0f;
+		enemyWalkTime[index] = 0.0f;
+
+		RecalculatePath(index);
+
+		return;
 	}
 }
 
@@ -288,6 +801,53 @@ int CheckEnemyHit(Vector3 bulletPosition)
 	return -1;
 }
 
+// =============================================
+// RUTAS VISIBLES CON P
+// =============================================
+
+void DrawEnemyPaths()
+{
+	if (!showEnemyPaths)
+		return;
+
+	for (int i = 0; i < NPC_COUNT; i++)
+	{
+		if (enemyPath[i].size() < 2)
+			continue;
+
+		Vector3 previous =
+		enemyPosition[i];
+
+		previous.y = 0.12f;
+
+		for (size_t p = 1;
+			 p < enemyPath[i].size();
+		p++)
+			 {
+				 Vector3 current =
+				 GridToWorld(
+					 enemyPath[i][p].x,
+				 enemyPath[i][p].z
+				 );
+
+				 current.y = 0.12f;
+
+				 DrawLine3D(
+					 previous,
+				current,
+				LIME
+				 );
+
+				 previous = current;
+			 }
+	}
+}
+
+// =============================================
+// TALÁN ORIGINAL
+// NO TOCAR
+// =============================================
+
 void DrawEnemy()
 {
 	for (int i = 0; i < NPC_COUNT; i++)

source/A4B1/player.cpp

@@ -12,7 +12,7 @@ float playerPitch = 0.0f;
 float weaponBobTime = 0.0f;
 float weaponShootTime = 0.0f;
 
-const float moveSpeed = 7.0f;
+const float moveSpeed = 11.0f;
 const float jumpForce = 9.0f;
 const float gravity = 20.0f;
 
@@ -50,22 +50,17 @@ Camera3D GetPlayerCamera()
 
 static void MovePlayer(Vector3 movement)
 {
-	// X separado de Z para poder deslizarse por las paredes.
 	Vector3 nextX = playerPosition;
 	nextX.x += movement.x;
 
 	if (!IsSolidAt(nextX, PLAYER_RADIUS))
-	{
 		playerPosition.x = nextX.x;
-	}
 
 	Vector3 nextZ = playerPosition;
 	nextZ.z += movement.z;
 
 	if (!IsSolidAt(nextZ, PLAYER_RADIUS))
-	{
 		playerPosition.z = nextZ.z;
-	}
 }
 
 void UpdatePlayer(float deltaTime)
@@ -150,9 +145,7 @@ void UpdatePlayer(float deltaTime)
 		verticalVelocity = 0.0f;
 
 		if (IsKeyPressed(KEY_SPACE))
-		{
 			verticalVelocity = jumpForce;
-		}
 	}
 
 	verticalVelocity -= gravity * deltaTime;
@@ -166,7 +159,6 @@ void UpdatePlayer(float deltaTime)
 		verticalVelocity = 0.0f;
 	}
 
-	// Colisión con el techo.
 	if (playerPosition.y + PLAYER_HEAD_Y > CEILING_Y)
 	{
 		playerPosition.y =