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-rw-r--r--src/common.h45
-rw-r--r--src/graphics.c23
-rw-r--r--src/graphics.h10
-rw-r--r--src/main.c78
-rw-r--r--src/math.c4
-rw-r--r--src/math.h4
-rw-r--r--src/phy_math.c4
-rw-r--r--src/phy_math.h11
-rw-r--r--src/physics.c61
-rw-r--r--src/physics.h25
10 files changed, 123 insertions, 142 deletions
diff --git a/src/common.h b/src/common.h
index 2c43f90..b8fb306 100644
--- a/src/common.h
+++ b/src/common.h
@@ -3,7 +3,6 @@
#define COMMON_H
#include <stdint.h>
-
typedef uint_least8_t u8;
typedef int_least8_t i8;
typedef uint_least16_t u16;
@@ -11,6 +10,29 @@ typedef int_least16_t i16;
typedef uint_least32_t u32;
typedef int_least32_t i32;
+#define SHAPE_ENUM_SIZE 3
+typedef enum {
+ SHAPE_CIRCLE,
+ SHAPE_SQUARE,
+ SHAPE_RECTANGLE
+} shape_t;
+
+typedef struct {
+ Color color;
+ float elast;
+// Vector2 force;
+ float frict;
+ Vector2 pos;
+ Vector2 pos_prev;
+ Vector2 vel;
+ bool grabbed;
+ bool registered;
+ float mass;
+ float size_x;
+ float size_y;
+ shape_t obj_type;
+} object_t;
+
// settings
@@ -26,21 +48,14 @@ typedef int_least32_t i32;
#define ARR_LEN(arr) (sizeof(arr)/sizeof(arr[0]))
-typedef enum {
- SHAPE_CIRCLE,
- SHAPE_SQUARE,
- SHAPE_RECTANGLE
-} shape_t;
+#define RANDOM_SHAPE() ((shape_t)(GetRandomValue(0, SHAPE_ENUM_SIZE - 1)))
-shape_t get_random_shape(void)
-{
- shape_t valid_shapes[] = {
- SHAPE_CIRCLE,
- SHAPE_SQUARE,
- SHAPE_RECTANGLE
- };
+#define RANDOM_COLOR() ((Color) { \
+ GetRandomValue(0, 255), \
+ GetRandomValue(0, 255), \
+ GetRandomValue(0, 255), \
+ 255 \
+ })
- return valid_shapes(GetRandomValue(0, ARR(valid_shapes)));
-}
#endif // COMMON_H
diff --git a/src/graphics.c b/src/graphics.c
index 42a06cd..ecc0a58 100644
--- a/src/graphics.c
+++ b/src/graphics.c
@@ -1,8 +1,9 @@
// graphics.c
#include <raylib.h>
#include <stdint.h>
+#include <stdio.h>
#include "graphics.h"
-#include "math.h"
+#include "common.h"
void init_graphics(uint32_t x, uint32_t y, const char* title)
{
@@ -37,16 +38,16 @@ void draw_graphics_object(const object_t* obj)
Vector2 pos = obj->pos;
- switch(obj->type) {
- case OBJECT_CIRCLE:
- DrawCircleV(pos, obj->size_x, color);
+ switch(obj->obj_type) {
+ case SHAPE_CIRCLE:
+ DrawCircleV(pos, obj->size_x/2.0f, color);
break;
- case OBJECT_SQUARE:
+ case SHAPE_SQUARE:
DrawRectangleV(
(Vector2){pos.x - obj->size_x/2, pos.y - obj->size_y/2},
(Vector2){obj->size_x, obj->size_y}, color);
break;
- case OBJECT_RECTANGLE:
+ case SHAPE_RECTANGLE:
DrawRectangleV(
(Vector2){pos.x - obj->size_x/2, pos.y - obj->size_y/2},
(Vector2){obj->size_x, obj->size_y}, color);
@@ -56,18 +57,18 @@ void draw_graphics_object(const object_t* obj)
void draw_graphics_objects(const object_t* world, uint32_t count)
{
- for (uint32_t iter = 0; iter < count, i++)
+ for (uint32_t iter = 0; iter < count; iter++)
{
- if(world[iter].registered) draw_graphics_object(&world[i]);
+ if(world[iter].registered) draw_graphics_object(&world[iter]);
}
}
-void draw_graphics_info(uint32_t fps, uint32_t objs, uint32_t max_objs)
+void draw_graphics_info(uint32_t objs)
{
char buffer[128];
- snprintf(buffer, sizeof(buffer), "FPS: %d", fps;
+ snprintf(buffer, sizeof(buffer), "FPS: %d", GetFPS());
DrawText(buffer, 10, 10, 20, BLACK);
- snprintf(buffer, sizeof(buffer), "OBJ: %d/%d", objs, max_objs);
+ snprintf(buffer, sizeof(buffer), "OBJ: %d/%d", objs, MAX_OBJECTS);
DrawText(buffer, 10, 35, 20, BLACK);
DrawText("ESC: Exit", 10, 60, 20, BLACK);
DrawText("R: Random velocity", 10, 85, 20, BLACK);
diff --git a/src/graphics.h b/src/graphics.h
index 65c2ddc..62dd874 100644
--- a/src/graphics.h
+++ b/src/graphics.h
@@ -1,18 +1,18 @@
// graphics.h
#ifndef GRAPHICS_H
#define GRAPHICS_H
+#include "common.h"
#include <raylib.h>
#include <stdint.h>
-#include "common.h"
void init_graphics(uint32_t x, uint32_t y, const char* title);
-void close_graphics(void)
+void close_graphics(void);
void begin_graphics_drawing(void);
void end_graphics_drawing(void);
void clear_graphics(const Color color);
-void draw_graphics_object(const object_t* obj, Color color);
-void draw_graphics_objects(const object_t* world, uint32_t count, Color color);
-void draw_graphics_info(uint32_t fps, uint32_t objs, uint32_t max_objs);
+void draw_graphics_object(const object_t* obj);
+void draw_graphics_objects(const object_t* world, uint32_t count);
+void draw_graphics_info(uint32_t objs);
bool should_close_graphics(void);
#endif // GRAPHICS_H
diff --git a/src/main.c b/src/main.c
index 1d3beb2..75042da 100644
--- a/src/main.c
+++ b/src/main.c
@@ -5,100 +5,106 @@
#include <stdio.h>
#include <stdlib.h>
-#include "common.h"
+
#include "graphics.h"
#include "physics.h"
+#include "common.h"
-
-int(void)
+int main(void)
{
// physics related
- object_t world = malloc(sizeof(object_t)*max_objs);
+ object_t world[MAX_OBJECTS];
uint32_t objs_count = 0;
float force_gravity = FORCE_GRAVITY_DEFAULT;
- float force_linear_damping = FORCE_LINEAR_DAMPING_DEFAULT;
+ object_t* grabbed_obj = NULL;
world[0] = (object_t){
- .color = BLUE,
+ .color = RANDOM_COLOR(),
.elast = 0.9f,
.frict = 0.99f,
.grabbed = true,
.pos_prev = {0},
- .registered = true;
+ .registered = true,
.size_x = 40,
.size_y = 40,
.vel = {200, 200},
- .pos = {GetScreenWidth()/2.0f, GetScreenheight()/2.0f},
- object_type_t = OBJECT_CIRCLE
+ .pos = { GetScreenWidth()/2.0f, GetScreenHeight()/2.0f },
+ .obj_type = RANDOM_SHAPE()
};
+ objs_count = 1;
+ init_physics(world, MAX_OBJECTS);
init_graphics(WINDOW_X, WINDOW_Y, SCREEN_TITLE);
while(!WindowShouldClose())
{
/* handle_input(world) */
// physics_update
- float dt = GetFrameTime(); // delta time
+ /* float dt = GetFrameTime(); delta time */
Vector2 pos_cursor = GetMousePosition();
if(IsMouseButtonPressed(MOUSE_BUTTON_LEFT))
{
- for(uint32 iter = objs_count -1; iter >= 0; i--)
+ if(objs_count == 0)
{
- object_t* obj = &world[i];
-
- if(hypot(pos_cursor.x, pos_cursor.y) <= (obj->size_x && obj->size_y))
+ grabbed_obj = NULL;
+ } else {
+ for(uint32_t iter = objs_count; iter > 0; iter--)
{
- obj->grabbed = true;
- grabbed_obj = obj;
- break;
+ object_t* obj = &world[iter - 1];
+
+
+ float dx = pos_cursor.x - obj->pos.x;
+ float dy = pos_cursor.y - obj->pos.y;
+
+ if(hypot(dx, dy) <= (obj->size_x && obj->size_y))
+ {
+ obj->grabbed = true;
+ grabbed_obj = obj;
+ break;
+ }
}
}
}
if (IsMouseButtonReleased(MOUSE_BUTTON_LEFT))
{
- if(grabbed_obj != NULL)
- {
+ if(grabbed_obj != NULL) {
grabbed_obj->grabbed = false;
grabbed_obj = NULL;
}
}
- if(IsMouseButtonPressed(MOUSE_BUTTON_RIGHT))
- {
- if(objs_count =< max_objs)
- {
- world[objs_count++] = (object_t*){
- .color = {
- GetRandomValue(0, 255),
- GetRandomValue(0, 255),
- GetRandomValue(0, 255),
- 255
- },
+ if(IsMouseButtonPressed(MOUSE_BUTTON_RIGHT)) {
+ if(objs_count < MAX_OBJECTS) {
+ world[objs_count++] = (object_t){
+ .color = RANDOM_COLOR(),
.elast = 0.9f,
.frict = 0.99f,
- .pos = pos_cursor;
- .pos_prev = 0.99f,
+ .pos = pos_cursor,
+ .pos_prev = pos_cursor,
.vel = {
(float)GetRandomValue(-300, 300),
(float)GetRandomValue(-300, 300)
},
.grabbed = false,
- .registered = true;
- .mass = GetRandomValue(0, 100), // will be done later
+ .registered = true,
+ .mass = GetRandomValue(3, 100), // will be done later
.size_x = GetRandomValue(3, 20), //everything smaller than 3 would be too small
.size_y = GetRandomValue(3, 20),
- .obj_type = get_random_shape()
+ .obj_type = RANDOM_SHAPE()
};
}
}
+ float dt = GetFrameTime();
+ update_physics(world, objs_count, force_gravity, dt);
+
begin_graphics_drawing();
clear_graphics(RAYWHITE);
draw_graphics_objects(world, objs_count);
- draw_graphics_info(GetFPS(), objs_count, MAX_OBJECTS);
+ draw_graphics_info(objs_count);
end_graphics_drawing();
}
diff --git a/src/math.c b/src/math.c
deleted file mode 100644
index 0ee755b..0000000
--- a/src/math.c
+++ /dev/null
@@ -1,4 +0,0 @@
-// math.c
-#include "phy_math.h"
-
-
diff --git a/src/math.h b/src/math.h
deleted file mode 100644
index 0aa9c3d..0000000
--- a/src/math.h
+++ /dev/null
@@ -1,4 +0,0 @@
-#ifndef PHY_MATH
-#define PHY_MATH
-
-#endif
diff --git a/src/phy_math.c b/src/phy_math.c
deleted file mode 100644
index 0ee755b..0000000
--- a/src/phy_math.c
+++ /dev/null
@@ -1,4 +0,0 @@
-// math.c
-#include "phy_math.h"
-
-
diff --git a/src/phy_math.h b/src/phy_math.h
deleted file mode 100644
index 1110319..0000000
--- a/src/phy_math.h
+++ /dev/null
@@ -1,11 +0,0 @@
-#ifndef PHY_MATH
-#define PHY_MATH
-
-typedef struct {
- float x;
- float y;
-} Vec2d;
-
-Vec2d vec2d_add(Vec2d v1, Vec2d v2);
-Vec2d vec2d_sub(Vec2d v1, Vec2d )
-#endif
diff --git a/src/physics.c b/src/physics.c
index cbcc977..14d786a 100644
--- a/src/physics.c
+++ b/src/physics.c
@@ -7,51 +7,54 @@
void init_physics(object_t* world, uint32_t max_objs)
{
- for(uint32_t iter = 0; iter < max_objs; iter++) world[iter].registered = false;
+ for(uint32_t iter = 0; iter < max_objs; iter++) {
+ world[iter].registered = false;
+ world[iter].grabbed = false;
+ }
}
-void update_physics(object_t* world, uint32_t objs_count, float gravity,
- float damping, float dt)
+void update_physics(object_t* world, uint32_t objs_count, float gravity, float dt)
{
const uint32_t screen_width = GetScreenWidth();
const uint32_t screen_height = GetScreenHeight();
+ if(dt > 0.033f) dt = 0.033f;
+
for(uint32_t iter = 0; iter < objs_count; iter++)
{
object_t* obj = &world[iter];
- if(!obj->grabbed) {
+ if(!obj->grabbed && obj->registered) {
obj->pos.x += obj->vel.x * dt;
obj->pos.y += obj->vel.y * dt;
- if((obj->pos.x + obj->size_x >= screen_width)) {
- obj->pos.x = screen_width - obj->size_x;
+ float half_width = obj->size_x/2.0f;
+ float half_height = obj->size_y/2.0f;
+
+ if((obj->pos.x + half_width >= screen_width)) {
+ obj->pos.x = screen_width - half_width;
obj->vel.x = -obj->vel.x * obj->elast;
- } else if((obj->pos.x - obj->size_x) <= 0) {
- obj->pos.x = obj->radius;
+
+ } else if((obj->pos.x - half_width) <= 0) {
+ obj->pos.x = half_width;
obj->vel.x = -obj->vel.x * obj->elast;
- } else if((obj->pos.y + obj->size_y) >= screen_height) {
- obj->pos.y = screen_height - obj->size_y;
+
+ } else if((obj->pos.y + half_height) >= screen_height) {
+ obj->pos.y = screen_height - half_height;
+ obj->vel.y = -obj->vel.y * obj->elast;
+
+ } else if((obj->pos.y - half_height) <= 0) {
+ obj->pos.y = half_height;
obj->vel.y = -obj->vel.y * obj->elast;
- } else if((obj->pos.y - obj->size_y) <= 0) {
- obj->pos.y = obj->size_y;
- obj->vel.y -obj->vel.y * obj->elast;
+
}
obj->vel.x = obj->vel.x * obj->frict;
- obj->vel.y = obj->vel.y * obj->frict * gravity;
+ obj->vel.y = obj->vel.y * obj->frict * gravity * dt;
+ }
+
+ if(obj->grabbed) {
+ Vector2 cursor_pos = GetMousePosition();
+ obj->pos = cursor_pos;
+ obj->vel = (Vector2){0, 0};
}
}
-
-/* void apply_force(object_t* obj, Vector2 force) */
-/* { */
-/* if(obj->registered == true) { */
-/* obj->force = Vector2Add(body->force, force) */
-
-/* } */
-/* } */
-
-/* void add_object(object_t* world, uint32_t* count, object_type_t type, Vector2 pos) */
-/* { */
-/* world */
-/* } */
-/* void clear_all_physics(object_t* world, uint32_t* count); */
- void push_pos(object_t* world, uint32_t count, Vector2 pos, float radius, float strength);
+}
diff --git a/src/physics.h b/src/physics.h
index 10148c1..a5168cd 100644
--- a/src/physics.h
+++ b/src/physics.h
@@ -6,32 +6,11 @@
#include <time.h>
#include "common.h"
-typedef enum {
- SHAPE_CIRCLE,
- SHAPE_SQUARE,
- SHAPE_RECTANGLE
-} shape_t;
-
-typedef struct {
- Color color;
- Vector2 elast;
-// Vector2 force;
- Vector2 frict;
- Vector2 pos;
- Vector2 pos_prev;
- Vector2 vel;
- bool grabbed;
- bool registered;
- float mass;
- float size_x;
- float size_y;
- shape_t obj_type;
-} object_t;
void init_physics(object_t* world, uint32_t max_objs);
-void update_physics(object_t* world, uint32_t objs_count, float gravity, float damping);
+void update_physics(object_t* world, uint32_t objs_count, float gravity, float dt);
void apply_force(object_t* obj, Vector2 force);
-void add_object(object_t* world, uint32_t* count, object_type_t type, Vector2 pos);
+void add_object(object_t* world, uint32_t* count, shape_t type, Vector2 pos);
void clear_all_physics(object_t* world, uint32_t* count);
void push_pos(object_t* world, uint32_t count, Vector2 pos, float radius, float strength);
generated by cgit v1.3 (git 2.53.0) at 2026-04-30 12:48:29 +0000