Merge pull request #1620 from heinezen/feature/flowfield_pathing

Flowfield pathing

assets/test/shaders/pathfinding/CMakeLists.txt

@@ -0,0 +1,4 @@
+install(DIRECTORY "."
+	DESTINATION "${ASSET_DIR}/test/shaders/pathfinding"
+	FILES_MATCHING PATTERN "*.glsl"
+)

assets/test/shaders/pathfinding/demo_0_cost_field.frag.glsl

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+#version 330
+
+in float v_cost;
+
+out vec4 out_col;
+
+void main()
+{
+    if (v_cost == 255.0) {
+        out_col = vec4(0.0, 0.0, 0.0, 1.0);
+        return;
+    }
+    float cost = (v_cost / 256) * 2.0;
+    float red = clamp(cost, 0.0, 1.0);
+    float green = clamp(2.0 - cost, 0.0, 1.0);
+	out_col = vec4(red, green, 0.0, 1.0);
+}

assets/test/shaders/pathfinding/demo_0_cost_field.vert.glsl

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+#version 330
+
+layout (location = 0) in vec3 position;
+layout (location = 1) in float cost;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 proj;
+
+out float v_cost;
+
+void main() {
+	gl_Position = proj * view * model * vec4(position, 1.0);
+    v_cost = cost;
+}

assets/test/shaders/pathfinding/demo_0_display.frag.glsl

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+#version 330
+
+uniform sampler2D color_texture;
+
+in vec2 v_uv;
+out vec4 col;
+
+void main() {
+	col = texture(color_texture, v_uv);
+}

assets/test/shaders/pathfinding/demo_0_display.vert.glsl

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+#version 330
+
+layout(location=0) in vec2 position;
+layout(location=1) in vec2 uv;
+out vec2 v_uv;
+
+void main() {
+	gl_Position =  vec4(position, 0.0, 1.0);
+	v_uv = uv;
+}

assets/test/shaders/pathfinding/demo_0_flow_field.frag.glsl

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+#version 330
+
+in float v_cost;
+
+out vec4 outcol;
+
+void main() {
+    int cost = int(v_cost);
+    if (bool(cost & 0x40)) {
+        // wavefront blocked
+        outcol = vec4(0.9, 0.9, 0.9, 1.0);
+        return;
+    }
+
+    if (bool(cost & 0x20)) {
+        // line of sight
+        outcol = vec4(1.0, 1.0, 1.0, 1.0);
+        return;
+    }
+
+    if (bool(cost & 0x10)) {
+        // pathable
+        outcol = vec4(0.7, 0.7, 0.7, 1.0);
+        return;
+    }
+
+    // not pathable
+    outcol = vec4(0.0, 0.0, 0.0, 1.0);
+}

assets/test/shaders/pathfinding/demo_0_flow_field.vert.glsl

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+#version 330
+
+layout(location=0) in vec3 position;
+layout(location=1) in float cost;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 proj;
+
+out float v_cost;
+
+void main() {
+	gl_Position = proj * view * model * vec4(position, 1.0);
+    v_cost = cost;
+}

assets/test/shaders/pathfinding/demo_0_grid.frag.glsl

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+#version 330
+
+out vec4 out_col;
+
+void main()
+{
+	out_col = vec4(0.0, 0.0, 0.0, 0.3);
+}

assets/test/shaders/pathfinding/demo_0_grid.vert.glsl

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+#version 330
+
+layout (location = 0) in vec3 position;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 proj;
+
+void main() {
+	gl_Position = proj * view * model * vec4(position, 1.0);
+}

assets/test/shaders/pathfinding/demo_0_integration_field.frag.glsl

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+#version 330
+
+in float v_cost;
+
+out vec4 out_col;
+
+void main()
+{
+    if (v_cost > 512.0) {
+        out_col = vec4(0.0, 0.0, 0.0, 1.0);
+        return;
+    }
+    float cost = 0.05 * v_cost;
+    float green = clamp(1.0 - cost, 0.0, 1.0);
+	out_col = vec4(0.75, green, 0.5, 1.0);
+}

assets/test/shaders/pathfinding/demo_0_integration_field.vert.glsl

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+#version 330
+
+layout (location = 0) in vec3 position;
+layout (location = 1) in float cost;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 proj;
+
+out float v_cost;
+
+void main() {
+	gl_Position = proj * view * model * vec4(position, 1.0);
+    v_cost = cost;
+}

assets/test/shaders/pathfinding/demo_0_obj.frag.glsl

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+#version 330
+
+uniform vec4 color;
+
+out vec4 outcol;
+
+void main() {
+    outcol = color;
+}

assets/test/shaders/pathfinding/demo_0_obj.vert.glsl

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+#version 330
+
+layout(location=0) in vec2 position;
+
+void main() {
+	gl_Position = vec4(position, 0.0, 1.0);
+}

assets/test/shaders/pathfinding/demo_0_vector.frag.glsl

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+#version 330
+
+uniform vec4 color;
+
+out vec4 outcol;
+
+void main() {
+    outcol = color;
+}

assets/test/shaders/pathfinding/demo_0_vector.vert.glsl

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+#version 330
+
+layout(location=0) in vec3 position;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 proj;
+
+void main() {
+	gl_Position = proj * view * model * vec4(position, 1.0);
+}

assets/test/shaders/pathfinding/demo_1_display.frag.glsl

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+#version 330
+
+uniform sampler2D color_texture;
+
+in vec2 v_uv;
+out vec4 col;
+
+void main() {
+	col = texture(color_texture, v_uv);
+}

assets/test/shaders/pathfinding/demo_1_display.vert.glsl

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+#version 330
+
+layout(location=0) in vec2 position;
+layout(location=1) in vec2 uv;
+out vec2 v_uv;
+
+void main() {
+	gl_Position =  vec4(position, 0.0, 1.0);
+	v_uv = uv;
+}

assets/test/shaders/pathfinding/demo_1_grid.frag.glsl

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+#version 330
+
+out vec4 out_col;
+
+void main()
+{
+	out_col = vec4(0.0, 0.0, 0.0, 0.3);
+}

assets/test/shaders/pathfinding/demo_1_grid.vert.glsl

@@ -0,0 +1,11 @@
+#version 330
+
+layout (location = 0) in vec2 position;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 proj;
+
+void main() {
+	gl_Position = proj * view * model * vec4(position, 0.0, 1.0);
+}

assets/test/shaders/pathfinding/demo_1_obj.frag.glsl

@@ -0,0 +1,9 @@
+#version 330
+
+uniform vec4 color;
+
+out vec4 outcol;
+
+void main() {
+    outcol = color;
+}

assets/test/shaders/pathfinding/demo_1_obj.vert.glsl

@@ -0,0 +1,11 @@
+#version 330
+
+layout(location=0) in vec2 position;
+
+uniform mat4 model;
+uniform mat4 view;
+uniform mat4 proj;
+
+void main() {
+	gl_Position = proj * view * model * vec4(position, 0.0, 1.0);
+}