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add a file preview and improve plane collision detection with a max radius from camera

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This commit is contained in:
Tuomas Katajisto 2025-09-15 23:31:16 +03:00
parent 2898cfce76
commit 726682d5e7
2 changed files with 26 additions and 4 deletions
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25
src/editor/level_editor.jai
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@ -34,6 +34,11 @@ pointerY : s32;
world : World;
show_trile_preview : bool = true;
trile_preview_x : int = 0;
trile_preview_y : int = 0;
trile_preview_z : int = 0;
Level_Editor_Tab :: enum {
TACOMA;
TOOLS;
@ -241,9 +246,18 @@ add_trile :: (name: string, x: float, y: float, z: float) {
tick_level_editor :: () {
tick_level_editor_camera();
ray := get_mouse_ray(*get_level_editor_camera());
hit, point := ray_plane_collision_point(ray, 0.0);
if hit && input_button_states[Key_Code.MOUSE_BUTTON_LEFT] & .START {
handle_tool_click(xx floor(point.x), 0, xx floor(point.y));
hit, point := ray_plane_collision_point(ray, 0.0, 20);
show_trile_preview = false;
if hit {
show_trile_preview = true;
trile_preview_x = xx floor(point.x);
trile_preview_y = xx floor(0);
trile_preview_z = xx floor(point.y);
if input_button_states[Key_Code.MOUSE_BUTTON_LEFT] & .START {
handle_tool_click(xx floor(point.x), 0, xx floor(point.y));
}
}
}
@ -269,6 +283,11 @@ draw_level_editor :: () {
idx += 1;
}
if show_trile_preview && it.trileName == editor_current_trile.name {
positions[idx] = .{xx trile_preview_x, xx trile_preview_y, xx trile_preview_z, 0.0};
idx += 1;
}
sg_update_buffer(gPipelines.trile.bind.vertex_buffers[3], *(sg_range.{
ptr = positions.data,
size = size_of(type_of(positions)),

5
src/ray.jai
View File

@ -42,12 +42,15 @@ Ray_Collision :: struct {
// At which 2D XZ point does a ray hit the ground plane at a height of
// plane_height. Used for the level editor and maybe later the trile editor as well.
ray_plane_collision_point :: (ray: Ray, plane_height: float) -> (bool, Vector2) {
ray_plane_collision_point :: (ray: Ray, plane_height: float, acceptable_radius: float = -1) -> (bool, Vector2) {
dist_to_plane := ray.origin.y - plane_height;
if ray.direction.y >= 0 then return false, .{0,0};
multi := dist_to_plane / abs(ray.direction.y);
ray_to_plane := ray.direction * multi;
planePoint := ray_to_plane + ray.origin;
if acceptable_radius > 0 && abs(length(Vector2.{planePoint.x, planePoint.z} - Vector2.{ray.origin.x, ray.origin.z})) > acceptable_radius {
return false, .{};
}
return true, .{planePoint.x, planePoint.z};
}