From: Lukas Krickl <lukas@krickl.dev>
Date: Thu, 5 Mar 2026 07:25:07 +0000 (+0100)
Subject: camera: fixed on camera detection for tile rendering
X-Git-Url: https://git.krickl.dev/?a=commitdiff_plain;h=eba42906d3ad6dfbb96aaecf4f501c6677444f7b;p=lrts%2F.git

camera: fixed on camera detection for tile rendering
---

diff --git a/src/r_assets.c b/src/r_assets.c
index 6661eab..02ba142 100644
--- a/src/r_assets.c
+++ b/src/r_assets.c
@@ -52,13 +52,14 @@ void r_draw_solid_isometric_tile(i32 x, i32 y, r_color color) {
 	u32 j = 0;
 	r_color final_color;
 	struct u_vec2 t = u_tile_to_screen(x, y);
-	t = u_screen_to_camera(&t_main_camera, t);
+	struct u_vec2 te = u_tile_to_screen(x+1, y+1);
 	
 	/* do not draw if tile is not visible at all */
-	if (!t_camera_is_visible_world(&t_main_camera, t.x, t.y)
-			&& !t_camera_is_visible_world(&t_main_camera, t.x + R_TILE_W, t.y + R_TILE_H)) {
+	if (!t_camera_is_visible_screen(&t_main_camera, t.x, t.y)
+			&& !t_camera_is_visible_screen(&t_main_camera, te.x, te.y)) {
 		return;
 	}
+	t = u_screen_to_camera(&t_main_camera, t);
 
 	/* converted origin point in isometric space */
 	
diff --git a/src/t_camera.c b/src/t_camera.c
index 3e2a830..f9a34a8 100644
--- a/src/t_camera.c
+++ b/src/t_camera.c
@@ -20,13 +20,7 @@ void t_camera_scroll(struct t_camera *c, i32 by_x, i32 by_y) {
 }
 
 lrts_bool t_camera_is_visible_screen(struct t_camera *c, i32 x, i32 y) {
-	return u_point_in_rect(x, y, c->x, c->y, c->x + c->viewport_x, c->y + c->viewport_y);
-}
-
-lrts_bool t_camera_is_visible_world(struct t_camera *c, i32 x, i32 y) {
-	struct u_vec2 t = u_point_to_screen(c->x, c->y);
-	
-	return u_point_in_rect(x, y, t.x, t.y, t.x + c->viewport_x, t.y + c->viewport_y);
+	return u_point_in_rect(x, y, c->x, c->y, c->viewport_x, c->viewport_y);
 }
 
 
diff --git a/src/t_camera.h b/src/t_camera.h
index 3a9d57c..5763f64 100644
--- a/src/t_camera.h
+++ b/src/t_camera.h
@@ -23,7 +23,5 @@ struct u_vec2 u_screen_to_camera(struct t_camera *c, struct u_vec2 v);
 /* tests if a point is visible in screen sapce */
 lrts_bool t_camera_is_visible_screen(struct t_camera *c, i32 x, i32 y);
 
-/* tests if a point is visible in world space */
-lrts_bool t_camera_is_visible_world(struct t_camera *c, i32 x, i32 y);
 
 #endif