BrychanD/JavaECS
1
0
Fork 0
Code Issues Pull Requests Projects Releases 2 Wiki Activity

Successfully implmented physics system

Browse Source
This commit is contained in:
Brychan Dempsey 2021-05-14 14:29:28 +12:00
parent 5aeb91d28f
commit 5121b193b9
4 changed files with 10 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
javaecs/src/main/java/nz/ac/massey/programming_project_159333_s1_2021/App.java
View File

@ -61,6 +61,7 @@ public final class App {
double dt = 0.0;
double frameRate = 1.0 / 20; // 1 second divided by target number of frames
double idleTime = 0.0; // the amount of time spent sleeping
boolean quit = false;
long loopStart = System.currentTimeMillis();
@ -68,13 +69,14 @@ public final class App {
// Get the time between frames for accurate time-based calculations (i.e. physics systems etc)
long startTime = System.nanoTime();
frameRateSystem.update(dt);
frameRateSystem.update(dt, idleTime);
physicsSystem.update(dt);
logVec2DSystem.update(dt);
dt = (System.nanoTime() - startTime) / 1e9; // convert nanoseconds to seconds
// Limit frame rate (approximately) to minimum of 16 ms
if (dt < frameRate){
idleTime = frameRate-dt;
Thread.sleep((int)((frameRate-dt)*1000));
dt = (System.nanoTime() - startTime) / 1e9;
}

4
javaecs/src/main/java/nz/ac/massey/programming_project_159333_s1_2021/FrameRateSystem.java
View File

@ -3,7 +3,7 @@ package nz.ac.massey.programming_project_159333_s1_2021;
public class FrameRateSystem extends ECSSystem{
void init() {}
void update(double dt){
System.out.print("dt: " + dt + " ");
void update(double dt, double idleTime){
System.out.print(String.format("dt: %.3g (%.3g idle) ", dt, idleTime));
}
}

2
javaecs/src/main/java/nz/ac/massey/programming_project_159333_s1_2021/LogVec2DSystem.java
View File

@ -11,7 +11,7 @@ public class LogVec2DSystem extends ECSSystem{
void update(double dt){
for (Integer entity : entities) {
Vec2D pos = (Vec2D)gameEngine.getComponentData(entity, Vec2D.class.getName());
System.out.println("X: " + pos.x + ", Y:" + pos.y);
System.out.println(String.format("X: %.6g, Y: %.6g", pos.x, pos.y));
}
}
}

8
javaecs/src/main/java/nz/ac/massey/programming_project_159333_s1_2021/SystemManager.java
View File

@ -26,13 +26,13 @@ class SystemManager{
// instance.
// I.e., create an object that represents the system class; then store that class in the system
// table.
public boolean registerSystem(String system, ECSSystem action){
if (systems.containsKey(system)){
public boolean registerSystem(String systemName, ECSSystem system){
if (systems.containsKey(systemName)){
System.err.println("System already registered");
return false;
}
systems.put(system, action);
signatures.put(system, new BitSet());
systems.put(systemName, system);
signatures.put(systemName, new BitSet());
return true;
}