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Improved time steps so animation speeds look consistent across varying fps

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This commit is contained in:
Collin Smith 2019-05-01 20:34:37 -07:00
parent b4ad257503
commit 74cc7b82e2
1 changed files with 19 additions and 12 deletions
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31
tools/src/com/riiablo/AnimationTool.java
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@ -12,6 +12,7 @@ import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.Batch;
import com.badlogic.gdx.graphics.glutils.ShaderProgram;
import com.badlogic.gdx.graphics.glutils.ShapeRenderer;
import com.badlogic.gdx.math.MathUtils;
import com.badlogic.gdx.scenes.scene2d.Actor;
import com.badlogic.gdx.scenes.scene2d.Stage;
import com.badlogic.gdx.scenes.scene2d.utils.ChangeListener;
@ -48,6 +49,7 @@ public class AnimationTool extends ApplicationAdapter {
config.resizable = true;
config.width = 256;
config.height = 384;
config.vSyncEnabled = false;
config.foregroundFPS = config.backgroundFPS = 144;
new LwjglApplication(new AnimationTool(args[0]), config);
}
@ -55,7 +57,8 @@ public class AnimationTool extends ApplicationAdapter {
FileHandle home;
Animation anim;
COF cof;
float timer;
float accumulator;
float lastUpdate;
Stage stage;
boolean lockFps;
@ -139,21 +142,25 @@ public class AnimationTool extends ApplicationAdapter {
stage.act();
stage.draw();
float delta = Gdx.graphics.getDeltaTime();
if (lockFps) {
accumulator += delta;
while (accumulator >= Animation.FRAME_DURATION) {
lastUpdate = accumulator;
accumulator -= Animation.FRAME_DURATION;
anim.act(Animation.FRAME_DURATION);
}
} else {
lastUpdate = delta;
anim.act(delta);
}
Batch b = stage.getBatch();
b.begin();
Riiablo.fonts.consolas16.draw(b, Integer.toString(Gdx.graphics.getFramesPerSecond()), 0, Gdx.graphics.getHeight());
Riiablo.fonts.consolas16.draw(b, String.valueOf(Gdx.graphics.getFramesPerSecond()), 0, Gdx.graphics.getHeight());
Riiablo.fonts.consolas16.draw(b, String.valueOf(MathUtils.roundPositive(1 / lastUpdate)), 0, Gdx.graphics.getHeight() - 16);
b.end();
float delta = Gdx.graphics.getDeltaTime();
timer -= delta;
if (timer <= 0) {
if (lockFps) {
anim.act(timer = Animation.FRAME_DURATION);
} else {
anim.act();
}
}
Riiablo.batch.begin(Riiablo.palettes.act1);
anim.draw(Riiablo.batch, Gdx.graphics.getWidth() / 2, Gdx.graphics.getHeight() / 2);
Riiablo.batch.end();