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author | Yann Herklotz <ymherklotz@gmail.com> | 2017-09-09 07:55:22 +0100 |
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committer | Yann Herklotz <ymherklotz@gmail.com> | 2017-09-09 07:55:22 +0100 |
commit | 60072c1d8089ffd3294e76636198d14710be95b8 (patch) | |
tree | 511d459e9afe69ca58d05880eb53ce44a9a183c6 /yage/base/sprite.cpp | |
parent | 660996bd750dbb5fcdce85845ee6b260f3ed23eb (diff) | |
download | YAGE-60072c1d8089ffd3294e76636198d14710be95b8.tar.gz YAGE-60072c1d8089ffd3294e76636198d14710be95b8.zip |
Restructuring
Diffstat (limited to 'yage/base/sprite.cpp')
-rw-r--r-- | yage/base/sprite.cpp | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/yage/base/sprite.cpp b/yage/base/sprite.cpp new file mode 100644 index 00000000..68e08e5d --- /dev/null +++ b/yage/base/sprite.cpp @@ -0,0 +1,97 @@ +/* ---------------------------------------------------------------------------- + * sprite.cpp + * + * Copyright (c) 2017 Yann Herklotz Grave <ymherklotz@gmail.com> -- MIT License + * See file LICENSE for more details + * ---------------------------------------------------------------------------- + */ + +#include <YAGE/sprite.h> +#include <YAGE/resourcemanager.h> +#include <YAGE/vertex.h> + +#include <cstddef> + +namespace yage +{ + +Sprite::Sprite() = default; + +Sprite::~Sprite() +{ + if (vbo_id_ != 0) { + glDeleteBuffers(1, &vbo_id_); + } +} + +void Sprite::init(float x, float y, float width, float height, + const std::string &texture_path) +{ + x_ = x; + y_ = y; + width_ = width; + height_ = height; + texture_ = ResourceManager::getTexture(texture_path); + + if (vbo_id_ == 0) { + glGenBuffers(1, &vbo_id_); + } + + Vertex vertex_data[6]; + + vertex_data[0].setPosition(x + width, y + height); + vertex_data[0].setUv(1.f, 1.f); + + vertex_data[1].setPosition(x, y + height); + vertex_data[1].setUv(0.f, 1.f); + + vertex_data[2].setPosition(x, y); + vertex_data[2].setUv(0.f, 0.f); + + vertex_data[3].setPosition(x, y); + vertex_data[3].setUv(0.f, 0.f); + + vertex_data[4].setPosition(x + width, y + height); + vertex_data[4].setUv(1.f, 1.f); + + vertex_data[5].setPosition(x + width, y); + vertex_data[5].setUv(1.f, 0.f); + + for (auto &i : vertex_data) { + i.setColor(255, 0, 255, 255); + } + + vertex_data[1].setColor(0, 255, 255, 255); + vertex_data[4].setColor(255, 0, 0, 255); + + glBindBuffer(GL_ARRAY_BUFFER, vbo_id_); + glBufferData(GL_ARRAY_BUFFER, sizeof(vertex_data), vertex_data, + GL_STATIC_DRAW); + glBindBuffer(GL_ARRAY_BUFFER, 0); +} + +void Sprite::draw() +{ + glBindTexture(GL_TEXTURE_2D, texture_.id); + glBindBuffer(GL_ARRAY_BUFFER, vbo_id_); + + glEnableVertexAttribArray(0); + glEnableVertexAttribArray(1); + glEnableVertexAttribArray(2); + + glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, sizeof(Vertex), + (void *)offsetof(Vertex, position)); + glVertexAttribPointer(1, 4, GL_UNSIGNED_BYTE, GL_TRUE, sizeof(Vertex), + (void *)offsetof(Vertex, color)); + glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, sizeof(Vertex), + (void *)offsetof(Vertex, uv)); + glDrawArrays(GL_TRIANGLES, 0, 6); + + glDisableVertexAttribArray(2); + glDisableVertexAttribArray(1); + glDisableVertexAttribArray(0); + + glBindBuffer(GL_ARRAY_BUFFER, 0); +} + +} // namespace yage |