From 97d4db588bfc4254e09e4305fb0525a04748f84e Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Sun, 7 Apr 2024 19:38:18 +0100
Subject: Stripped down water vertex and simplified shaders

---
 game/water.cpp | 15 ++++++++++-----
 game/water.h   |  7 ++++++-
 2 files changed, 16 insertions(+), 6 deletions(-)

(limited to 'game')

diff --git a/game/water.cpp b/game/water.cpp
index 3dc1916..f720e3e 100644
--- a/game/water.cpp
+++ b/game/water.cpp
@@ -9,7 +9,6 @@
 #include <gfx/models/mesh.h>
 #include <gfx/models/vertex.h>
 #include <glm/glm.hpp>
-#include <iterator>
 #include <location.h>
 #include <maths.h>
 #include <set>
@@ -24,6 +23,13 @@ namespace glm {
 	}
 }
 
+template<>
+VertexArrayObject &
+VertexArrayObject::addAttribsFor<Water::Vertex>(const GLuint arrayBuffer, const GLuint divisor)
+{
+	return addAttribs<Water::Vertex, &Water::Vertex::pos>(arrayBuffer, divisor);
+}
+
 Water::Water(std::shared_ptr<GeoData> tm) : geoData {std::move(tm)}, water {std::make_shared<Texture>("water.png")}
 {
 	generateMeshes();
@@ -77,8 +83,7 @@ Water::generateMeshes()
 						const auto v = vertexIndex.emplace(pos, vertices.size());
 						if (v.second) {
 							const auto cpos = glm::clamp(pos, std::get<0>(extents).xy(), std::get<1>(extents).xy());
-							vertices.emplace_back(RelativePosition3D {geoData->positionAt(cpos)},
-									TextureRelCoord(pos / TILE_SIZE), up);
+							vertices.emplace_back(geoData->positionAt(cpos));
 						}
 						*out++ = static_cast<unsigned int>(v.first->second);
 					}
@@ -87,7 +92,7 @@ Water::generateMeshes()
 					indices.push_back(currentIndices[i]);
 				}
 			});
-	meshes.create<Mesh>(vertices, indices);
+	meshes.create<MeshT<Vertex>>(vertices, indices);
 }
 
 void
@@ -101,5 +106,5 @@ Water::render(const SceneShader & shader) const
 {
 	shader.water.use(waveCycle);
 	water->bind();
-	meshes.apply(&Mesh::Draw);
+	meshes.apply(&MeshT<GlobalPosition3D>::Draw);
 }
diff --git a/game/water.h b/game/water.h
index 20796d7..ceb7bd2 100644
--- a/game/water.h
+++ b/game/water.h
@@ -2,6 +2,7 @@
 
 #include "chronology.h"
 #include "collection.h"
+#include "config/types.h"
 #include "game/worldobject.h"
 #include <gfx/models/mesh.h>
 #include <gfx/renderable.h>
@@ -20,10 +21,14 @@ public:
 	void tick(TickDuration) override;
 	float waveCycle {0.F};
 
+	struct Vertex {
+		GlobalPosition3D pos;
+	};
+
 private:
 	void generateMeshes();
 
 	std::shared_ptr<GeoData> geoData;
-	Collection<Mesh, false> meshes;
+	Collection<MeshT<Vertex>, false> meshes;
 	std::shared_ptr<Texture> water;
 };
-- 
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