implemented right-click movement

main.cpp

@@ -1,41 +1,63 @@
 #include "raylib.h"
 #include <cmath>
 
+void handleRightClick(Camera3D camera, Vector3* target_position) {
+    Ray ray = GetMouseRay(GetMousePosition(), camera);
+    if (ray.direction.y > 0)
+        return;
+
+    // Calculate t (distance along ray to ground plane at y=0)
+    float t = 0 - ray.position.y / ray.direction.y;
+
+    // Calculate where ray hits the ground
+    target_position->x = ray.position.x + (ray.direction.x * t);
+    target_position->z = ray.position.z + (ray.direction.z * t);
+}
+
 int main() {
-    InitWindow(1920, 1080, "My First 3D Cube");
+    InitWindow(900, 600, "My First 3D Cube");
 
     Camera3D camera = {0};
     camera.position = (Vector3){10.0f, 10.0f, 10.0f};
     camera.target = (Vector3){0.0f, 0.0f, 0.0f};
     camera.up = (Vector3){0.0f, 2.0f, 0.0f};
-    camera.fovy = 45.0f;
-    //camera.projection = CAMERA_ORTHOGRAPHIC;
+    camera.fovy = 90.0f;
     camera.projection = CAMERA_PERSPECTIVE;
 
-    float cam_angle = 0.0f;
-    float cube_angle = 0.0f;
-    float cam_distance = 10.0f;
-    float cube_distance = 10.0f;
+    Vector3 cube_position = {0, 1.0, 0};
+    Vector3 target_position = {0, 0, 0};
+    float move_speed = 0.001f;
 
     while (!WindowShouldClose()) {
 
-        cam_angle +=    0.000f;
-        cube_angle -=   0.00001f;
-        Vector3 cube_rotation{cube_distance * sinf(cube_angle), 0.0f, cube_distance * cosf( cube_angle)};
-        
-        camera.position.x = cube_rotation.x + (cam_distance * sinf(cam_angle));
-        camera.position.z = cube_rotation.z + (cam_distance * cosf(cam_angle));
+        if (IsMouseButtonPressed(MOUSE_BUTTON_RIGHT)) {
+            handleRightClick(camera, &target_position);
+        }
 
-        camera.target.x = cube_rotation.x;
-        camera.target.z = cube_rotation.z;
+        // Movement to target
+        if(cube_position.x != target_position.x || cube_position.z != target_position.z) {
+            float xdiff = target_position.x - cube_position.x;
+            float zdiff = target_position.z - cube_position.z;
+            float distance = sqrtf(pow(xdiff, 2) + pow(zdiff, 2));
 
+            // snap to target
+            if (distance < move_speed) {
+                cube_position.x = target_position.x;
+                cube_position.z = target_position.z;
+                continue;
+            }
+
+            cube_position.x += (xdiff/distance) * move_speed;
+            cube_position.z += (zdiff/distance) * move_speed;
+        }
 
         BeginDrawing();
-        ClearBackground(BLACK);
+        ClearBackground((Color){0, 0, 0, 0});
 
         BeginMode3D(camera);
-        DrawCube(cube_rotation, 2.0f, 2.0f, 2.0f, RED);
-        DrawGrid(10, 1.0f);
+        DrawPlane((Vector3){0, 0, 0}, (Vector2) {500, 500}, BLUE);
+        DrawCube(cube_position, 2.0f, 2.0f, 2.0f, RED);
+        //DrawGrid(100, 1.0f);
         EndMode3D();
 
         EndDrawing();