Implement TapirEngine.SetInstanceMeshShow

include/reign.h

@@ -214,6 +214,7 @@ bool RE_instance_load(struct RE_instance *instance, const char *name);
 bool RE_instance_load_motion(struct RE_instance *instance, const char *name);
 bool RE_instance_load_next_motion(struct RE_instance *instance, const char *name);
 bool RE_instance_free_next_motion(struct RE_instance *instance);
+bool RE_instance_set_mesh_show(struct RE_instance *instance, const char *mesh_name, bool show);
 bool RE_instance_set_vertex_pos(struct RE_instance *instance, int index, float x, float y, float z);
 int RE_instance_get_bone_index(struct RE_instance *instance, const char *name);
 bool RE_instance_trans_local_pos_to_world_pos_by_bone(struct RE_instance *instance, int bone, vec3 offset, vec3 out);

src/3d/3d_internal.h

@@ -50,8 +50,10 @@ struct model {
 };
 
 struct mesh {
+	char *name;
 	uint32_t flags;
 	bool is_transparent;
+	bool hidden;
 	GLuint vao;
 	GLuint attr_buffer;
 	GLuint index_buffer;

src/3d/model.c

@@ -317,6 +317,7 @@ static void add_mesh(struct model *model, struct pol_mesh *m, uint32_t material_
 	}
 	model->meshes = xrealloc_array(model->meshes, model->nr_meshes, model->nr_meshes + 1, sizeof(struct mesh));
 	struct mesh *mesh = &model->meshes[model->nr_meshes++];
+	mesh->name = xstrdup(m->name);
 	mesh->flags = m->flags;
 	mesh->material = material;
 	if (re_plugin_version == RE_REIGN_PLUGIN)
@@ -393,6 +394,7 @@ static void add_mesh(struct model *model, struct pol_mesh *m, uint32_t material_
 
 static void destroy_mesh(struct mesh *mesh)
 {
+	free(mesh->name);
 	glDeleteVertexArrays(1, &mesh->vao);
 	glDeleteBuffers(1, &mesh->attr_buffer);
 	if (mesh->index_buffer)

src/3d/reign.c

@@ -502,6 +502,19 @@ bool RE_instance_free_next_motion(struct RE_instance *instance)
 	return true;
 }
 
+bool RE_instance_set_mesh_show(struct RE_instance *instance, const char *mesh_name, bool show)
+{
+	if (!instance || !instance->model)
+		return false;
+	for (int i = 0; i < instance->model->nr_meshes; i++) {
+		if (!strcmp(instance->model->meshes[i].name, mesh_name)) {
+			instance->model->meshes[i].hidden = !show;
+			return true;
+		}
+	}
+	return false;
+}
+
 bool RE_instance_set_vertex_pos(struct RE_instance *instance, int index, float x, float y, float z)
 {
 	if (!instance)

src/3d/renderer.c

@@ -362,6 +362,8 @@ static void render_model(struct RE_instance *inst, struct RE_renderer *r, enum d
 
 	for (int i = 0; i < model->nr_meshes; i++) {
 		struct mesh *mesh = &model->meshes[i];
+		if (mesh->hidden)
+			continue;
 		struct material *material = &model->materials[mesh->material];
 		bool is_transparent = mesh->is_transparent || inst->alpha < 1.0f;
 		if (phase != (is_transparent ? DRAW_TRANSPARENT : DRAW_OPAQUE))

src/hll/ReignEngine.c

@@ -1891,7 +1891,11 @@ static bool TapirEngine_GetInstancePathLine(int plugin, int instance, struct pag
 }
 
 //bool TapirEngine_CreateInstancePathLineList(int PluginNumber, int InstanceNumber, int PathInstanceNumber);
-//bool TapirEngine_SetInstanceMeshShow(int PluginNumber, int InstanceNumber, struct string *pIMeshName, bool Show);
+
+static bool TapirEngine_SetInstanceMeshShow(int plugin, int instance, struct string *mesh_name, bool show)
+{
+	return RE_instance_set_mesh_show(get_instance(plugin, instance), mesh_name->text, show);
+}
 
 static bool TapirEngine_SetDrawOption(int plugin_number, int draw_option, int param)
 {
@@ -2303,7 +2307,7 @@ HLL_LIBRARY(ReignEngine, REIGN_EXPORTS,
 	    HLL_EXPORT(OptimizeInstancePathLine, TapirEngine_OptimizeInstancePathLine), \
 	    HLL_EXPORT(GetInstancePathLine, TapirEngine_GetInstancePathLine), \
 	    HLL_TODO_EXPORT(CreateInstancePathLineList, TapirEngine_CreateInstancePathLineList), \
-	    HLL_TODO_EXPORT(SetInstanceMeshShow, TapirEngine_SetInstanceMeshShow), \
+	    HLL_EXPORT(SetInstanceMeshShow, TapirEngine_SetInstanceMeshShow), \
 	    HLL_EXPORT(SetDrawOption, TapirEngine_SetDrawOption), \
 	    HLL_EXPORT(GetDrawOption, TapirEngine_GetDrawOption), \
 	    HLL_TODO_EXPORT(SetDebugMode, TapirEngine_SetDebugMode), \