tonk

commit a6ccaab60f0a46fc93dde60df6e6250f5866834a
Author: thing1 <l.standen@posteo.com>
Date:   Wed, 24 Sep 2025 11:29:24 +0100

init commit

Diffstat:
A
Makefile
 | 
10
++++++++++
A
tonk
 | 
0

A
tonk.c
 | 
164
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

3 files changed, 174 insertions(+), 0 deletions(-)
diff --git a/Makefile b/Makefile
@@ -0,0 +1,10 @@
+all: tonk
+
+LIBS=-lraylib -lm
+CFLAGS=-ggdb
+
+tonk: tonk.c
+	cc tonk.c -o tonk ${LIBS} ${CFLAGS}
+
+clean: 
+	rm tonk
diff --git a/tonk b/tonk
Binary files differ.
diff --git a/tonk.c b/tonk.c
@@ -0,0 +1,164 @@
+#include <raylib.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <math.h>
+#include <string.h>
+#include <sys/param.h>
+#include <stdbool.h>
+
+#define TANK_WIDTH 20
+#define TANK_HEIGHT 50
+#define GUN_WIDTH 5 
+#define GUN_HEIGHT 30 
+#define MAX_SHOTS 100
+
+#define INDEG(rad) (rad * (180 / M_PI))
+#define CLAMP(val, lower, upper) ((val < lower) ? lower : ((val > upper) ? upper: val))
+
+typedef struct tank {
+	Vector2 pos;
+	float rot, gunrot;
+} tank;
+
+typedef struct shot {
+	Vector2 pos;
+	float speed, rot;
+	int bounces;
+	bool exists;
+} shot;
+
+void 
+draw_tank(tank t) {
+	Rectangle tank_body = {t.pos.x, t.pos.y, TANK_WIDTH, TANK_HEIGHT};
+	Vector2 tank_origin = {TANK_WIDTH / 2, TANK_HEIGHT / 2};
+	DrawRectanglePro(tank_body, tank_origin, t.rot + 90, DARKGREEN);
+
+
+
+	Rectangle gun_body = {
+		t.pos.x + 5 * cos(t.rot * M_PI / 180), 
+		t.pos.y + 5 * sin(t.rot * M_PI / 180),
+		GUN_WIDTH, GUN_HEIGHT};
+
+	Vector2 gun_origin = {GUN_WIDTH / 2, 0};
+	DrawRectanglePro(gun_body, gun_origin, t.gunrot + 90, GREEN);
+
+}
+
+void 
+draw_shot(shot shot) {
+	DrawCircleV(shot.pos, 3, RED);
+}
+
+void
+update_tank(tank *t) {
+	float dx = t->pos.x - GetMouseX(), dy = t->pos.y - GetMouseY();
+	float rads = atan((float)(dy / dx));
+	if (rads > 0 && dy < 0) rads = rads + M_PI;
+	else if (rads < 0 && dx < 0) rads = rads + M_PI;
+	t->gunrot = INDEG(rads);
+
+	if (IsKeyDown(KEY_D)) 
+		t->rot += 0.01;
+	if (IsKeyDown(KEY_A)) 
+		t->rot -= 0.01;
+
+	if (IsKeyDown(KEY_S)) {
+		t->pos.x += 0.01 * cos(t->rot * M_PI / 180); 
+		t->pos.y += 0.01 * sin(t->rot * M_PI / 180);
+	}
+	if (IsKeyDown(KEY_W)) {
+		t->pos.x -= 0.01 * cos(t->rot * M_PI / 180); 
+		t->pos.y -= 0.01 * sin(t->rot * M_PI / 180);
+	}
+}
+
+void
+update_shots(shot *shots, int shot_count) {
+	for (int i = 0; i < shot_count; i++) {
+		shot *s = &shots[i];
+
+		if (s->pos.y > GetScreenHeight()) {
+			s->rot = -s->rot;
+			s->pos.y = GetScreenHeight() - 1;
+			s->bounces--;
+		}
+		else if (s->pos.y < 0) {
+			s->rot = -s->rot;
+			s->pos.y = 1;
+			s->bounces--;
+		}
+		if (s->pos.x > GetScreenWidth()) {
+			s->rot = 180-s->rot;
+			s->pos.x = GetScreenWidth() - 1;
+			s->bounces--;
+		}
+		else if (s->pos.x < 0) {
+			s->rot = 180-s->rot;
+			s->pos.x = 1;
+			s->bounces--;
+		}
+
+		if (s->bounces == 0) {
+			s->exists = false;
+			continue;
+		}
+
+		s->pos.x += s->speed * cos(s->rot * M_PI / 180); 
+		s->pos.y += s->speed * sin(s->rot * M_PI / 180);
+
+		while (s->rot > 360)
+			s->rot -= 360;
+	}
+}
+
+void 
+append_shot(shot *shots, int shot_count, Vector2 pos, float speed, float rot, int bounces, bool exists) {
+	shot new = {
+		{(pos.x + GUN_HEIGHT * cos(rot * M_PI / 180)), 
+		(pos.y + GUN_HEIGHT * sin(rot * M_PI / 180))}, 
+		speed, rot, bounces, exists};
+
+	int i;	
+	for (i = 0; i < shot_count; i++) {
+		if (!shots[i].exists)
+			break;
+	}
+
+	memcpy(&shots[i], &new, sizeof(shot));
+}
+
+int 
+main() {
+	InitWindow(800, 800, "Tonks!");
+	//ToggleBorderlessWindowed();
+
+	tank t = {
+		{400, 400},
+		0, 
+		0	
+	};
+
+	shot *shots = alloca(MAX_SHOTS * sizeof(shot));
+	memset(shots, 0, MAX_SHOTS * sizeof(shot));
+
+	while (!WindowShouldClose()) {
+		BeginDrawing();
+		ClearBackground(RAYWHITE);
+
+		draw_tank(t);
+		for (int i = 0; i < MAX_SHOTS; i++) {
+			if (shots[i].exists)
+				draw_shot(shots[i]);
+		}
+		EndDrawing();
+
+		if (IsKeyPressed(KEY_SPACE)) 
+			append_shot(shots, MAX_SHOTS, t.pos, 0.1, t.gunrot + 180, 5, true);
+
+		update_tank(&t);
+		update_shots(shots, MAX_SHOTS);
+	}
+		
+	CloseWindow();
+}