85 lines
2.1 KiB
Plaintext
85 lines
2.1 KiB
Plaintext
//quick and dirty RNG
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var randi: Int = 69420;
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fn rand() {
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return randi = randi * 1664525 + 1013904223; //overflows to a negative, which is fine
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}
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//wander like a zombie
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var counter = 0;
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fn wander(actor: Opaque) {
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actor.setX(actor.x + rand() % 5);
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actor.setY(actor.y + rand() % 5);
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if (playerRef.x > actor.x) {
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actor.setX(actor.x + 1);
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}
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else {
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actor.setX(actor.x - 1);
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}
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if (playerRef.y > actor.y) {
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actor.setY(actor.y + 1);
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}
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else {
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actor.setY(actor.y - 1);
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}
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counter++;
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}
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//player controlled character
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var playerRef: Opaque = null;
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var playerMaxMotion: Int = 5;
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var playerMotionX: Int = 0;
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var playerMotionY: Int = 0;
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fn playerOnFrame(player: Opaque) {
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//handle keyboard input
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if (KeyPressed.UP) playerMotionY -= 5;
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if (KeyPressed.DOWN) playerMotionY += 5;
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if (KeyPressed.LEFT) playerMotionX -= 5;
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if (KeyPressed.RIGHT) playerMotionX += 5;
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if (KeyReleased.UP) playerMotionY = min(playerMotionY + 5, 0);
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if (KeyReleased.DOWN) playerMotionY = max(playerMotionY - 5, 0);
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if (KeyReleased.LEFT) playerMotionX = min(playerMotionX + 5, 0);
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if (KeyReleased.RIGHT) playerMotionX = max(playerMotionX - 5, 0);
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//cap the max speed
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playerMotionX = min(max(playerMotionX, -playerMaxMotion), playerMaxMotion);
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playerMotionY = min(max(playerMotionY, -playerMaxMotion), playerMaxMotion);
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//shortcut for normalized diagonal movement
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var mod = 1;
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if (playerMotionX != 0 && playerMotionY != 0) {
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mod = 0.707;
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}
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//move the player
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player.setX(player.x + floor(playerMotionX * mod));
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player.setY(player.y + floor(playerMotionY * mod));
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}
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//when the game is ready, load the "zombie" sprite
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fn onReady() {
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loadSprite("zombie", "assets/parvati.png", 32, 32);
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//spawn some "zombies" looking for brains
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spawnActorAt("zombie", wander, 250, 250);
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spawnActorAt("zombie", wander, 250, 500);
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spawnActorAt("zombie", wander, 500, 250);
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spawnActorAt("zombie", wander, 500, 500);
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//spawn the player
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loadSprite("player", "assets/parvati.png", 32, 32);
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playerRef = spawnActorAt("player", playerOnFrame, 300, 300);
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}
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fn onFrame() {
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//debug
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}
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//example API for the game
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initScreen(1280, 720, "Oh no, Zombies!");
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initLoop(onReady, onFrame, null);
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