Nivel TALAN

source/A4B1/weapons.cpp

@@ -0,0 +1,225 @@
+#include "raylib.h"
+#include <cmath>
+#include <vector>
+
+extern Camera3D GetPlayerCamera();
+extern Vector3 playerPosition;
+extern float playerYaw;
+extern float weaponShootTime;
+
+extern int CheckEnemyHit(Vector3 bulletPosition);
+extern void TeleportEnemyNearPlayer(int index, float yaw);
+extern bool IsSolidAt(Vector3 position, float radius);
+
+struct Bullet
+{
+	Vector3 position;
+	Vector3 direction;
+	float speed;
+	bool active;
+};
+
+static const int MAX_BULLETS = 100;
+
+static Bullet bullets[MAX_BULLETS];
+
+static Vector3 GetForward()
+{
+	Vector3 forward =
+	{
+		cosf(playerYaw),
+		0.0f,
+		sinf(playerYaw)
+	};
+
+	return forward;
+}
+
+static void SpawnBullet(
+	Vector3 start,
+	Vector3 direction
+)
+{
+	for (int i = 0; i < MAX_BULLETS; i++)
+	{
+		if (!bullets[i].active)
+		{
+			bullets[i].position = start;
+			bullets[i].direction = direction;
+			bullets[i].speed = 35.0f;
+			bullets[i].active = true;
+			return;
+		}
+	}
+}
+
+void UpdateWeapons(float deltaTime)
+{
+	if (IsMouseButtonPressed(MOUSE_BUTTON_LEFT))
+	{
+		Camera3D camera = GetPlayerCamera();
+
+		Vector3 forward =
+		{
+			camera.target.x - camera.position.x,
+			camera.target.y - camera.position.y,
+			camera.target.z - camera.position.z
+		};
+
+		float length =
+		sqrtf(
+			forward.x * forward.x +
+				forward.y * forward.y +
+					forward.z * forward.z
+		);
+
+		if (length > 0.001f)
+		{
+			forward.x /= length;
+			forward.y /= length;
+			forward.z /= length;
+		}
+
+		Vector3 right =
+		{
+			-sinf(playerYaw),
+			0.0f,
+			cosf(playerYaw)
+		};
+
+		Vector3 start =
+		{
+			camera.position.x + forward.x * 0.7f,
+			camera.position.y + forward.y * 0.7f,
+			camera.position.z + forward.z * 0.7f
+		};
+
+		const float spread = 0.07f;
+
+		SpawnBullet(
+			start,
+			{
+				forward.x,
+					forward.y,
+						forward.z
+			}
+		);
+
+		SpawnBullet(
+			start,
+			{
+				forward.x + right.x * spread,
+					forward.y,
+						forward.z + right.z * spread
+			}
+		);
+
+		SpawnBullet(
+			start,
+			{
+				forward.x - right.x * spread,
+					forward.y,
+						forward.z - right.z * spread
+			}
+		);
+
+		SpawnBullet(
+			start,
+			{
+				forward.x + right.x * spread * 2.0f,
+					forward.y,
+						forward.z + right.z * spread * 2.0f
+			}
+		);
+
+		SpawnBullet(
+			start,
+			{
+				forward.x - right.x * spread * 2.0f,
+					forward.y,
+						forward.z - right.z * spread * 2.0f
+			}
+		);
+
+		weaponShootTime = 0.12f;
+	}
+
+	for (int i = 0; i < MAX_BULLETS; i++)
+	{
+		if (!bullets[i].active)
+			continue;
+
+		Vector3 movement =
+		{
+			bullets[i].direction.x *
+			bullets[i].speed * deltaTime,
+
+			bullets[i].direction.y *
+			bullets[i].speed * deltaTime,
+
+			bullets[i].direction.z *
+			bullets[i].speed * deltaTime
+		};
+
+		Vector3 nextPosition =
+		{
+			bullets[i].position.x + movement.x,
+			bullets[i].position.y + movement.y,
+			bullets[i].position.z + movement.z
+		};
+
+		// Las balas chocan con paredes y muebles.
+		if (IsSolidAt(nextPosition, 0.08f))
+		{
+			bullets[i].active = false;
+			continue;
+		}
+
+		bullets[i].position = nextPosition;
+
+		int hitNPC =
+		CheckEnemyHit(bullets[i].position);
+
+		if (hitNPC >= 0)
+		{
+			TeleportEnemyNearPlayer(
+				hitNPC,
+				playerYaw
+			);
+
+			bullets[i].active = false;
+			continue;
+		}
+
+		float dx =
+		bullets[i].position.x -
+		playerPosition.x;
+
+		float dz =
+		bullets[i].position.z -
+		playerPosition.z;
+
+		float distance =
+		sqrtf(dx * dx + dz * dz);
+
+		if (distance > 200.0f)
+		{
+			bullets[i].active = false;
+		}
+	}
+}
+
+void DrawBullets()
+{
+	for (int i = 0; i < MAX_BULLETS; i++)
+	{
+		if (!bullets[i].active)
+			continue;
+
+		DrawSphere(
+			bullets[i].position,
+			 0.10f,
+			 YELLOW
+		);
+	}
+}