From 6969b5d88c8dbcbdc54de5ae23ccb6395e1e7948 Mon Sep 17 00:00:00 2001
From: Aaditya Dhruv <aadityadhruv@mailbox.org>
Date: Wed, 28 Jan 2026 17:43:29 -0600
Subject: Add mouse-based movement to camera

Can use WASD + Mouse to fly around the scene
---
 src/input.c | 25 +++++++++++++++++--------
 1 file changed, 17 insertions(+), 8 deletions(-)

(limited to 'src/input.c')

diff --git a/src/input.c b/src/input.c
index 54ae199..be240be 100644
--- a/src/input.c
+++ b/src/input.c
@@ -3,6 +3,8 @@
 #include "cglm/types.h"
 #include "pthread.h"
 #include <SDL2/SDL_events.h>
+#include <SDL2/SDL_mouse.h>
+#include <SDL2/SDL_stdinc.h>
 
 pthread_t input_init(struct engine* engine) {
     pthread_t thread;
@@ -14,6 +16,7 @@ void input_join(pthread_t thread, struct engine* engine) {
 }
 void input_handle(struct engine *engine) {
     SDL_Event event;
+    SDL_SetRelativeMouseMode(SDL_TRUE);
     while (engine->game_loop) {
         // Quit game
         // TODO: Locks?
@@ -23,27 +26,33 @@ void input_handle(struct engine *engine) {
         }
         if (event.type == SDL_KEYDOWN) {
             SDL_KeyboardEvent key = event.key;
-            vec3 ahead = { 0.0f, 0.0f, -1.0f };
-            vec3 behind = { 0.0f, 0.0f, 1.0f };
-            vec3 left = { -1.0f, 0.0f, 0.0f };
-            vec3 right = { 1.0f, 0.0f, 0.0f };
             switch (key.keysym.sym) {
                 case SDLK_w:
-                    camera_move(engine->camera, ahead);
+                    camera_move(engine->camera, FORWARD);
                     break;
                 case SDLK_a:
-                    camera_move(engine->camera, left);
+                    camera_move(engine->camera, LEFT);
                     break;
                 case SDLK_s:
-                    camera_move(engine->camera, behind);
+                    camera_move(engine->camera, BACKWARD);
                     break;
                 case SDLK_d:
-                    camera_move(engine->camera, right);
+                    camera_move(engine->camera, RIGHT);
                     break;
                 case SDLK_ESCAPE:
                     engine->game_loop = 0;
                     break;
             }
         }
+        if (event.type == SDL_MOUSEMOTION) {
+            int x;
+            int y;
+            SDL_GetRelativeMouseState(&x, &y);
+            if (x != 0 || y != 0) {
+            fprintf(stderr, "X: %d, Y %d\n", x, y);
+            vec2 offset = { x, y };
+            camera_rotate(engine->camera, offset);
+            }
+        }
     }
 }
-- 
cgit