63 lines
1.5 KiB
D
63 lines
1.5 KiB
D
module game.animation.animation;
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import raylib;
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struct Animation {
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private {
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Texture2D texture;
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Rectangle[] rectFrames;
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int numFrames;
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int currentFrame;
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float frameTimeSecs;
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float frameTimeSecsLeft;
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bool isActive;
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}
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this(in Texture2D texture, in int numFrames, in int numRows, in float frameTimeSecs, in int useRow = 1) {
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this.texture = texture;
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this.numFrames = numFrames;
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this.frameTimeSecs = frameTimeSecs;
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this.frameTimeSecsLeft = frameTimeSecs;
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this.currentFrame = 0;
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this.isActive = true;
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// create rectangle frames
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immutable frameWidth = texture.width / numFrames;
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immutable frameHeight = texture.height / numRows;
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foreach(i; 0 .. numFrames) {
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this.rectFrames ~= Rectangle(i * frameWidth, (useRow - 1) * frameHeight, frameWidth, frameHeight);
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}
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}
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void start() {
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isActive = true;
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}
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void stop() {
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isActive = false;
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}
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void reset() {
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currentFrame = 0;
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frameTimeSecsLeft = frameTimeSecs;
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}
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void update() {
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if(!isActive) {
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return;
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}
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frameTimeSecsLeft -= GetFrameTime();
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if(frameTimeSecsLeft <= 0) {
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frameTimeSecsLeft += frameTimeSecs;
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currentFrame = (currentFrame + 1) % numFrames;
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}
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}
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void draw(in Vector2 position) {
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DrawTextureRec(texture, rectFrames[currentFrame], position, Colors.WHITE);
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}
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}
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