sunxfancyandCursor
c19b8fda41
- Updated the physics module to include Box2D support, enabling management of physics bodies and collision events. - Enhanced the map module to support tile layers and improved hot-reload functionality for tilemaps. - Updated documentation to reflect the new features in the physics and map systems, including usage examples and API references. - Modified CMakeLists.txt to include new modules for physics and font management, ensuring proper build configurations. Co-authored-by: Cursor <cursoragent@cursor.com>
100 lines
3.3 KiB
Plaintext
100 lines
3.3 KiB
Plaintext
// example game callbacks — overrides defaults from load.nut
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// Frame: physics → map/particles.update → clear → map → box → particles → debug → present
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//
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// Soft hot-reload: put one-time setup in eve_init; guard mutable state so
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// re-dofile does not wipe C++ entity refs. Optional eve_reload / eve_asset_reload.
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if (!("fx" in getroottable()))
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fx <- null;
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if (!("tileLayer" in getroottable()))
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tileLayer <- null;
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if (!("world" in getroottable()))
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world <- null;
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if (!("ground" in getroottable()))
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ground <- null;
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if (!("boxBody" in getroottable()))
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boxBody <- null;
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if (!("boxW" in getroottable()))
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boxW <- 48.0;
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if (!("boxH" in getroottable()))
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boxH <- 48.0;
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eve_init = function() {
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gfx.setBackgroundColor(0.08, 0.09, 0.14, 1.0);
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if (particles == null) particles = eve.Particles();
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if (map == null) map = eve.Map();
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if (physics == null) physics = eve.Physics();
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physics.setMeter(30.0);
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if (tileLayer == null) {
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tileLayer = map.newLayerFromFile("maps/demo.json");
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if (tileLayer == null) {
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// Fallback: procedural checkerboard without atlas (solid debug colors).
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tileLayer = map.newLayer(10, 7, 32.0, 32.0);
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tileLayer.setOrigin(40.0, 80.0);
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tileLayer.setLayer(0);
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for (local y = 0; y < 7; y += 1) {
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for (local x = 0; x < 10; x += 1) {
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local gid = ((x + y) % 2 == 0) ? 1 : 2;
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if (x == 0 || y == 0 || x == 9 || y == 6) gid = 3;
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tileLayer.setTile(x, y, gid);
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}
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}
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}
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}
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if (world == null) {
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// Gravity in pixels/s² (+Y is down, matching screen coords).
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world = physics.newWorld(0.0, 980.0, true);
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ground = world.newBody("static", config.width * 0.5, config.height - 20.0);
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ground.newRectangleFixture(config.width * 1.0, 40.0, 0.0, 0.6, 0.0);
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boxBody = world.newBody("dynamic", config.width * 0.5, 80.0);
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boxBody.newRectangleFixture(boxW, boxH, 1.0, 0.3, 0.2);
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}
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if (fx == null) {
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fx = particles.newEmitterFromFile("particles/fire.json");
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if (fx == null) {
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fx = particles.newEmitter(256);
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fx.applyPreset("fire");
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fx.setPosition(config.width * 0.5, config.height * 0.75);
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fx.start();
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} else {
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fx.setPosition(config.width * 0.5, config.height * 0.75);
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}
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}
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};
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// Called after scripts soft-reload (not after asset-only changes).
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eve_reload <- function() {
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// Example: tweak live state without recreating emitters / layers.
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};
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// Called when a non-.nut watched file changes (after HotReload.tryReload).
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eve_asset_reload <- function(path) {
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};
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eve_update = function(dt) {
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if (world) world.update(dt);
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if (map) map.update(dt);
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if (particles) particles.update(dt);
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};
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eve_render = function() {
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gfx.clear();
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if (map) map.render(gfx);
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if (boxBody) {
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local x = boxBody.getX() - boxW * 0.5;
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local y = boxBody.getY() - boxH * 0.5;
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gfx.drawSolidRect(x, y, boxW, boxH, 1.3, 0.8, 0.4, 1.0);
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}
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if (ground) {
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gfx.drawSolidRect(0.0, config.height - 40.0, config.width * 1.0, 40.0, 0.25, 0.35, 0.3, 1.0);
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}
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if (particles) particles.render(gfx);
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if (config.debug && world)
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world.drawDebug(gfx);
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};
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