Damage Effect

shader_type canvas_item;

uniform float hit_flash_duration : hint_range(0.0, 1.0) = 0.2;
uniform float hit_intensity : hint_range(0.0, 2.0) = 1.5;

// Change 'hint_color' to 'source_color'
uniform vec3 hit_color : source_color = vec3(1.0, 1.0, 1.0);

uniform float hit_timer : hint_range(0.0, 1.0) = 0.0;

void fragment() {
    vec4 color = texture(TEXTURE, UV);
    
    // Calculate damage effect
    float damage_effect = smoothstep(hit_flash_duration, 0.0, hit_timer);
    
    // White flash effect
    vec3 flash = mix(color.rgb, hit_color, damage_effect * hit_intensity);
    
    // Screen shake distortion
    float shake = sin(hit_timer * 50.0) * damage_effect * 0.02;
    vec2 distorted_uv = UV + vec2(shake, shake);
    vec4 distorted_color = texture(TEXTURE, distorted_uv);
    
    // Final color blending
    vec3 final_rgb = mix(flash, distorted_color.rgb, 0.5);
    final_rgb = mix(final_rgb, vec3(1.0), damage_effect * 0.3);
    
    COLOR = vec4(final_rgb, color.a); // Preserving original alpha
}