/*
    Undercooked - a game about cooking
    Copyright 2024 nokoe
    Copyright 2024 tpart
    
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU Affero General Public License as published by
    the Free Software Foundation, version 3 of the License only.
    
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Affero General Public License for more details.
    
    You should have received a copy of the GNU Affero General Public License
    along with this program.  If not, see <https://www.gnu.org/licenses/>.
    
*/
shader_type spatial;
render_mode unshaded;

uniform float progress = 0.;
uniform bool bad = false;

void fragment() {
	vec3 color = vec3(0., .5, 0.);
	float alpha_fac = 1.;
	if (bad) {
		color = vec3(1., 0., 0.);
		alpha_fac = sin(TIME * 15.) * .5 + 1.;
	}
	if (UV.x > progress) {
		ALPHA = 1.;
		color = vec3(0.1, 0.1, 0.1);
	}
	ALPHA *= alpha_fac;
	ALBEDO = color;
}

void vertex() {
    mat4 modified_model_view = VIEW_MATRIX * mat4(
        INV_VIEW_MATRIX[0],
        INV_VIEW_MATRIX[1],
        INV_VIEW_MATRIX[2],
        MODEL_MATRIX[3]
    );
    MODELVIEW_MATRIX = modified_model_view;
}