47 lines
1.4 KiB
GLSL
47 lines
1.4 KiB
GLSL
#version 330 core
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layout(location = 0) in vec3 aPos;
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layout(location = 1) in vec2 aTexCoord;
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layout(location = 2) in int aTexIndex;
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out vec2 TexCoord;
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flat out int TexIndex;
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flat out float GameTime;
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uniform mat4 ProjMatrix;
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uniform float u_time;
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uniform int u_ismoving;
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const float bobbingSpeed = 18.0; // Speed of the bobbing effect
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const float bobbingIntensity = 0.6; // Intensity of the bobbing effect
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void main()
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{
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vec3 position = aPos;
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if (u_ismoving == 1 && aTexIndex == 1) {
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// Calculate bobbing offset based on sine waves
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float verticalBob = sin(u_time * bobbingSpeed) * bobbingIntensity;
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float horizontalBob = sin(u_time * bobbingSpeed * 0.5) * bobbingIntensity * 0.3;
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// Apply the bobbing offset
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position.y += verticalBob;
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position.x += horizontalBob;
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// Optional: Add slight rotation for more realistic head movement
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float tiltAngle = sin(u_time * bobbingSpeed * 0.7) * bobbingIntensity * 0.02;
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// Apply rotation around Z-axis (head tilt)
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float cosA = cos(tiltAngle);
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float sinA = sin(tiltAngle);
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float newX = position.x * cosA - position.y * sinA;
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float newY = position.x * sinA + position.y * cosA;
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position.x = newX;
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position.y = newY;
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}
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GameTime = u_time;
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gl_Position = ProjMatrix * vec4(position, 1.0);
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TexCoord = aTexCoord;
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TexIndex = aTexIndex;
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} |