added new picture to readme

README.md

@@ -41,3 +41,9 @@ When placing a block, the program now raycasts to place where the camera is look
 It took me a couple of days to fix the ray casting. I forgot that my mesh is offset by 0.5, so 3/4 raycasts looked at least a block off of what the camera was looking at.
 
 ![Hello, written in blocks on a dirt plane](.attachments/fixed-raycast.png)
+
+## 0.7.0 : Physics - 11/18/25
+
+Woah! The camera doesn't just phase through placed blocks anymore! The camera can also fall into the void for eternity! So cool!
+
+![The camera, sitting atop a built platform, overlooking another "Hi" built from stone](.attachments/physics.png)

src/Camera.h

@@ -6,7 +6,7 @@
 
 #include "World.h"
 
-const float CAMERA_HEIGHT = 0.0f;
+const float CAMERA_HEIGHT = 1.8f;
 const float GRAVITY = 18.6f; // Should be in m/s^2 but it doesn't really work out with 9.8 so we double it
 
 class Camera
@@ -22,6 +22,8 @@ class Camera
     glm::vec3 forward_velocity;
     glm::vec3 vertical_velocity;
 
+    bool grounded;
+
     float speed;
 
     glm::vec3 worldUp;
@@ -42,6 +44,8 @@ class Camera
 
         glm::vec3 right = glm::normalize(glm::cross(up, this->direction));
         this->up = glm::cross(this->direction, right);
+
+        this->grounded = false;
     }
 
     Camera(glm::vec3 pos, glm::vec3 target, float speed)
@@ -60,6 +64,8 @@ class Camera
 
         glm::vec3 right = glm::normalize(glm::cross(up, this->direction));
         this->up = glm::cross(this->direction, right);
+
+        this->grounded = false;
     }
 
     glm::mat4 getView()
@@ -100,8 +106,9 @@ class Camera
             target_position[axis] += position_delta[axis];
 
             glm::vec3 aabb_center = target_position + aabb_center_offset;
-            glm::vec3 min = glm::floor(aabb_center - aabb_half_dims);
-            glm::vec3 max = glm::ceil(aabb_center + aabb_half_dims);
+            glm::vec3 adjusted_center = aabb_center + glm::vec3(0.5f, 0.5f, 0.5f);
+            glm::vec3 min = glm::floor(adjusted_center - aabb_half_dims);
+            glm::vec3 max = glm::ceil(adjusted_center + aabb_half_dims);
 
             bool collided = false;
             for (int x = min.x; x < max.x && !collided; x++) {
@@ -120,12 +127,14 @@ class Camera
                 this->position[axis] = target_position[axis];
             } else if (axis == 1) {
                 y_axis_collided = true;
+                grounded = true;
                 this->vertical_velocity.y = 0.0f;
             }
         }
 
         if (!y_axis_collided) {
             this->vertical_velocity.y -= GRAVITY * time;
+            grounded = false;
         }
 
 

src/World.cpp

@@ -77,7 +77,7 @@ std::optional<std::pair<glm::ivec3, glm::ivec3>> World::raycast_voxel(glm::vec3
     // Adjust start position to account for voxels being centered at integer + 0.5
     // (voxel at pos (0,0,0) occupies space from (-0.5,-0.5,-0.5) to (0.5,0.5,0.5))
     glm::vec3 adjusted_start = start + glm::vec3(0.5f, 0.5f, 0.5f);
-    
+
     glm::ivec3 pos = glm::ivec3(std::floor(adjusted_start.x), std::floor(adjusted_start.y), std::floor(adjusted_start.z));
     // std::cout << "[RAYCAST] Starting voxel: (" << pos.x << ", " << pos.y << ", " << pos.z << ")" << std::endl;
 

src/main.cpp

@@ -17,7 +17,7 @@ const int EDIT_RANGE = 5;
 
 // Jump
 const float JUMP_COOLDOWN = 0.0f;
-const float JUMP_POWER = 10.0f; // Initial Jump Speed
+const float JUMP_POWER = 7.5f; // Initial Jump Speed
 float last_jump = 0.0f;
 
 // Camera
@@ -193,7 +193,7 @@ void processInput(GLFWwindow *window)
     if(glfwGetKey(window, GLFW_KEY_SPACE) == GLFW_PRESS)
         // camera.velocity -= glm::normalize(glm::cross(camera.target, glm::normalize(glm::cross(camera.target, camera.worldUp)))) * camera.speed * 0.5f;
     {
-        if (current_time - last_jump > JUMP_COOLDOWN && camera.position.y == 0)
+        if (current_time - last_jump > JUMP_COOLDOWN && camera.grounded)
         {
             camera.vertical_velocity.y = JUMP_POWER;
             last_jump = current_time;
@@ -269,7 +269,7 @@ int main() {
     glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
 
     // 2. --- Create a Window ---
-    GLFWwindow* window = glfwCreateWindow(SCR_WIDTH, SCR_HEIGHT, "Voxel Engine 0.6.1", NULL, NULL);
+    GLFWwindow* window = glfwCreateWindow(SCR_WIDTH, SCR_HEIGHT, "Voxel Engine 0.7.0", NULL, NULL);
     if (window == NULL) {
         std::cerr << "Failed to create GLFW window" << std::endl;
         glfwTerminate();