507 lines
14 KiB
C
507 lines
14 KiB
C
#include "2dphysics.h"
|
|
|
|
#include "gameobject.h"
|
|
#include <string.h>
|
|
#include "mathc.h"
|
|
#include "nuke.h"
|
|
|
|
#include "debugdraw.h"
|
|
#include "gameobject.h"
|
|
#include <math.h>
|
|
#include <chipmunk/chipmunk_unsafe.h>
|
|
#include "stb_ds.h"
|
|
|
|
#include "script.h"
|
|
|
|
#include "log.h"
|
|
|
|
cpSpace *space = NULL;
|
|
float phys2d_gravity = -50.f;
|
|
|
|
void phys2d_init()
|
|
{
|
|
space = cpSpaceNew();
|
|
cpVect grav = {0, phys2d_gravity};
|
|
phys2d_set_gravity(grav);
|
|
cpSpaceSetGravity(space, cpv(0, phys2d_gravity));
|
|
}
|
|
|
|
void phys2d_set_gravity(cpVect v) {
|
|
cpSpaceSetGravity(space, v);
|
|
}
|
|
|
|
void phys2d_update(float deltaT)
|
|
{
|
|
cpSpaceStep(space, deltaT);
|
|
}
|
|
|
|
void phys2d_shape_apply(struct phys2d_shape *shape)
|
|
{
|
|
cpShapeSetFriction(shape->shape, id2go(shape->go)->f);
|
|
cpShapeSetElasticity(shape->shape, id2go(shape->go)->e);
|
|
}
|
|
|
|
void init_phys2dshape(struct phys2d_shape *shape, int go, void *data)
|
|
{
|
|
shape->go = go;
|
|
shape->data = data;
|
|
cpShapeSetCollisionType(shape->shape, go);
|
|
cpShapeSetUserData(shape->shape, shape);
|
|
phys2d_shape_apply(shape);
|
|
}
|
|
|
|
void phys2d_shape_del(struct phys2d_shape *shape)
|
|
{
|
|
cpSpaceRemoveShape(space, shape->shape);
|
|
}
|
|
|
|
struct phys2d_circle *Make2DCircle(int go)
|
|
{
|
|
struct phys2d_circle *new = malloc(sizeof(struct phys2d_circle));
|
|
|
|
new->radius = 10.f;
|
|
new->offset[0] = 0.f;
|
|
new->offset[1] = 0.f;
|
|
|
|
new->shape.shape = cpSpaceAddShape(space, cpCircleShapeNew(id2go(go)->body, new->radius, cpvzero));
|
|
new->shape.debugdraw = phys2d_dbgdrawcircle;
|
|
init_phys2dshape(&new->shape, go, new);
|
|
|
|
return new;
|
|
}
|
|
|
|
void phys2d_circledel(struct phys2d_circle *c)
|
|
{
|
|
phys2d_shape_del(&c->shape);
|
|
}
|
|
|
|
void circle_gui(struct phys2d_circle *circle)
|
|
{
|
|
nuke_property_float("Radius", 1.f, &circle->radius, 10000.f, 1.f, 1.f);
|
|
nuke_property_float2("Offset", 0.f, circle->offset, 1.f, 0.01f, 0.01f);
|
|
|
|
phys2d_applycircle(circle);
|
|
}
|
|
|
|
void phys2d_dbgdrawcpcirc(cpCircleShape *c)
|
|
{
|
|
cpVect pos = cpBodyGetPosition(cpShapeGetBody(c));
|
|
cpVect offset = cpCircleShapeGetOffset(c);
|
|
float radius = cpCircleShapeGetRadius(c);
|
|
float d = sqrt(pow(offset.x, 2.f) + pow(offset.y, 2.f));
|
|
float a = atan2(offset.y, offset.x) + cpBodyGetAngle(cpShapeGetBody(c));
|
|
draw_circle(pos.x + (d * cos(a)), pos.y + (d*sin(a)), radius, 1);
|
|
}
|
|
|
|
void phys2d_dbgdrawcircle(struct phys2d_circle *circle)
|
|
{
|
|
phys2d_dbgdrawcpcirc((cpCircleShape *)circle->shape.shape);
|
|
|
|
cpVect p = cpBodyGetPosition(cpShapeGetBody(circle->shape.shape));
|
|
cpVect o = cpCircleShapeGetOffset(circle->shape.shape);
|
|
float d = sqrt(pow(o.x, 2.f) + pow(o.y, 2.f));
|
|
float a = atan2(o.y, o.x) + cpBodyGetAngle(cpShapeGetBody(circle->shape.shape));
|
|
draw_circle(p.x + (d * cos(a)), p.y + (d * sin(a)), cpCircleShapeGetRadius(circle->shape.shape), 1);
|
|
|
|
}
|
|
|
|
|
|
/*********** SEGMENT2D **************/
|
|
|
|
struct phys2d_segment *Make2DSegment(int go)
|
|
{
|
|
struct phys2d_segment *new = malloc(sizeof(struct phys2d_segment));
|
|
|
|
new->thickness = 1.f;
|
|
new->a[0] = 0.f;
|
|
new->a[1] = 0.f;
|
|
new->b[0] = 0.f;
|
|
new->b[1] = 0.f;
|
|
|
|
new->shape.shape = cpSpaceAddShape(space, cpSegmentShapeNew(id2go(go)->body, cpvzero, cpvzero, new->thickness));
|
|
new->shape.debugdraw = phys2d_dbgdrawseg;
|
|
init_phys2dshape(&new->shape, go, new);
|
|
|
|
return new;
|
|
}
|
|
|
|
void phys2d_segdel(struct phys2d_segment *seg)
|
|
{
|
|
phys2d_shape_del(&seg->shape);
|
|
}
|
|
|
|
void segment_gui(struct phys2d_segment *seg)
|
|
{
|
|
nuke_property_float2("a", 0.f, seg->a, 1.f, 0.01f, 0.01f);
|
|
nuke_property_float2("b", 0.f, seg->b, 1.f, 0.01f, 0.01f);
|
|
|
|
phys2d_applyseg(seg);
|
|
}
|
|
|
|
|
|
/************* BOX2D ************/
|
|
|
|
struct phys2d_box *Make2DBox(int go)
|
|
{
|
|
struct phys2d_box *new = malloc(sizeof(struct phys2d_box));
|
|
|
|
new->w = 50.f;
|
|
new->h = 50.f;
|
|
new->r = 0.f;
|
|
new->offset[0] = 0.f;
|
|
new->offset[1] = 0.f;
|
|
|
|
new->shape.shape = cpSpaceAddShape(space, cpBoxShapeNew(id2go(go)->body, new->w, new->h, new->r));
|
|
new->shape.debugdraw = phys2d_dbgdrawbox;
|
|
init_phys2dshape(&new->shape, go, new);
|
|
phys2d_applybox(new);
|
|
|
|
return new;
|
|
}
|
|
|
|
void phys2d_boxdel(struct phys2d_box *box)
|
|
{
|
|
phys2d_shape_del(&box->shape);
|
|
}
|
|
|
|
void box_gui(struct phys2d_box *box)
|
|
{
|
|
nuke_property_float("Width", 0.f, &box->w, 1000.f, 1.f, 1.f);
|
|
nuke_property_float("Height", 0.f, &box->h, 1000.f, 1.f, 1.f);
|
|
nuke_property_float2("Offset", 0.f, box->offset, 1.f, 0.01f, 0.01f);
|
|
|
|
phys2d_applybox(box);
|
|
}
|
|
|
|
/************** POLYGON ************/
|
|
|
|
struct phys2d_poly *Make2DPoly(int go)
|
|
{
|
|
struct phys2d_poly *new = malloc(sizeof(struct phys2d_poly));
|
|
|
|
new->n = 0;
|
|
new->points = NULL;
|
|
new->radius = 0.f;
|
|
|
|
cpTransform T = { 0 };
|
|
new->shape.shape = cpSpaceAddShape(space, cpPolyShapeNew(id2go(go)->body, 0, NULL, T, new->radius));
|
|
init_phys2dshape(&new->shape, go, new);
|
|
new->shape.debugdraw = phys2d_dbgdrawpoly;
|
|
phys2d_applypoly(new);
|
|
|
|
return new;
|
|
}
|
|
|
|
void phys2d_polydel(struct phys2d_poly *poly)
|
|
{
|
|
phys2d_shape_del(&poly->shape);
|
|
}
|
|
|
|
void phys2d_polyaddvert(struct phys2d_poly *poly)
|
|
{
|
|
poly->n++;
|
|
float *oldpoints = poly->points;
|
|
poly->points = calloc(2 * poly->n, sizeof(float));
|
|
memcpy(poly->points, oldpoints, sizeof(float) * 2 * (poly->n - 1));
|
|
free(oldpoints);
|
|
}
|
|
|
|
void poly_gui(struct phys2d_poly *poly)
|
|
{
|
|
|
|
if (nuke_btn("Add Poly Vertex")) phys2d_polyaddvert(poly);
|
|
|
|
for (int i = 0; i < poly->n; i++) {
|
|
nuke_property_float2("#P", 0.f, &poly->points[i*2], 1.f, 0.1f, 0.1f);
|
|
}
|
|
|
|
nuke_property_float("Radius", 0.01f, &poly->radius, 1000.f, 1.f, 0.1f);
|
|
|
|
phys2d_applypoly(poly);
|
|
}
|
|
|
|
|
|
|
|
/****************** EDGE 2D**************/
|
|
|
|
struct phys2d_edge *Make2DEdge(int go)
|
|
{
|
|
struct phys2d_edge *new = malloc(sizeof(struct phys2d_edge));
|
|
|
|
new->n = 2;
|
|
new->points = calloc(2 * 2, sizeof(float));
|
|
new->thickness = 0.f;
|
|
new->shapes = malloc(sizeof(cpShape *));
|
|
|
|
new->shapes[0] = cpSpaceAddShape(space, cpSegmentShapeNew(id2go(go)->body, cpvzero, cpvzero, new->thickness));
|
|
new->shape.go = go;
|
|
phys2d_edgeshapeapply(&new->shape, new->shapes[0]);
|
|
|
|
phys2d_applyedge(new);
|
|
|
|
return new;
|
|
}
|
|
|
|
void phys2d_edgedel(struct phys2d_edge *edge)
|
|
{
|
|
phys2d_shape_del(&edge->shape);
|
|
}
|
|
|
|
void phys2d_edgeshapeapply(struct phys2d_shape *mshape, cpShape * shape)
|
|
{
|
|
cpShapeSetFriction(shape, id2go(mshape->go)->f);
|
|
cpShapeSetElasticity(shape, id2go(mshape->go)->e);
|
|
}
|
|
|
|
void phys2d_edgeaddvert(struct phys2d_edge *edge)
|
|
{
|
|
edge->n++;
|
|
float *oldp = edge->points;
|
|
edge->points = calloc(edge->n * 2, sizeof(float));
|
|
memcpy(edge->points, oldp, sizeof(float) * 2 * (edge->n - 1));
|
|
|
|
cpShape **oldshapes = edge->shapes;
|
|
edge->shapes = malloc(sizeof(cpShape *) * (edge->n - 1));
|
|
memcpy(edge->shapes, oldshapes, sizeof(cpShape *) * (edge->n - 2));
|
|
cpVect a =
|
|
{ edge->points[(edge->n - 2) * 2],
|
|
edge->points[(edge->n - 2) * 2 + 1] };
|
|
cpVect b =
|
|
{ edge->points[(edge->n - 1) * 2],
|
|
edge->points[(edge->n - 1) * 2 + 1] };
|
|
edge->shapes[edge->n - 2] = cpSpaceAddShape(space, cpSegmentShapeNew(id2go(edge->shape.go)->body, a, b, edge->thickness));
|
|
phys2d_edgeshapeapply(&edge->shape, edge->shapes[edge->n - 2]);
|
|
|
|
free(oldp);
|
|
free(oldshapes);
|
|
}
|
|
|
|
void edge_gui(struct phys2d_edge *edge)
|
|
{
|
|
if (nuke_btn("Add Edge Vertex")) phys2d_edgeaddvert(edge);
|
|
|
|
for (int i = 0; i < edge->n; i++)
|
|
nuke_property_float2("E", 0.f, &edge->points[i*2], 1.f, 0.01f, 0.01f);
|
|
|
|
nuke_property_float("Thickness", 0.01f, &edge->thickness, 1.f, 0.01f, 0.01f);
|
|
|
|
phys2d_applyedge(edge);
|
|
}
|
|
|
|
|
|
|
|
void phys2d_applycircle(struct phys2d_circle *circle)
|
|
{
|
|
struct gameobject *go = id2go(circle->shape.go);
|
|
|
|
float radius = circle->radius * go->scale;
|
|
float s = go->scale;
|
|
cpVect offset = { circle->offset[0] * s, circle->offset[1] * s };
|
|
|
|
cpCircleShapeSetRadius(circle->shape.shape, radius);
|
|
cpCircleShapeSetOffset(circle->shape.shape, offset);
|
|
cpBodySetMoment(go->body, cpMomentForCircle(go->mass, 0, radius, offset));
|
|
}
|
|
|
|
void phys2d_applyseg(struct phys2d_segment *seg)
|
|
{
|
|
float s = id2go(seg->shape.go)->scale;
|
|
cpVect a = { seg->a[0] * s, seg->a[1] * s };
|
|
cpVect b = { seg->b[0] * s, seg->b[1] * s };
|
|
cpSegmentShapeSetEndpoints(seg->shape.shape, a, b);
|
|
cpSegmentShapeSetRadius(seg->shape.shape, seg->thickness * s);
|
|
}
|
|
|
|
void phys2d_applybox(struct phys2d_box *box)
|
|
{
|
|
float s = id2go(box->shape.go)->scale;
|
|
cpTransform T = { 0 };
|
|
T.a = s;
|
|
T.d = s;
|
|
T.tx = box->offset[0] * s;
|
|
T.ty = box->offset[1] * s;
|
|
float hh = box->h / 2.f;
|
|
float hw = box->w / 2.f;
|
|
cpVect verts[4] =
|
|
{ { -hw, -hh }, { hw, -hh }, { hw, hh }, { -hw, hh } };
|
|
cpPolyShapeSetVerts(box->shape.shape, 4, verts, T);
|
|
cpPolyShapeSetRadius(box->shape.shape, box->r);
|
|
}
|
|
|
|
void phys2d_applypoly(struct phys2d_poly *poly)
|
|
{
|
|
cpVect verts[poly->n];
|
|
|
|
for (int i = 0; i < poly->n; i++) {
|
|
verts[i].x = poly->points[i * 2];
|
|
verts[i].y = poly->points[i * 2 + 1];
|
|
}
|
|
|
|
CP_CONVEX_HULL(poly->n, verts, hullCount, hullVerts);
|
|
|
|
float s = id2go(poly->shape.go)->scale;
|
|
cpTransform T = { 0 };
|
|
T.a = s;
|
|
T.d = s;
|
|
|
|
cpPolyShapeSetVerts(poly->shape.shape, hullCount, hullVerts, T);
|
|
cpPolyShapeSetRadius(poly->shape.shape, poly->radius);
|
|
}
|
|
|
|
void phys2d_applyedge(struct phys2d_edge *edge)
|
|
{
|
|
float s = id2go(edge->shape.go)->scale;
|
|
|
|
for (int i = 0; i < edge->n - 1; i++) {
|
|
cpVect a =
|
|
{ edge->points[i * 2] * s, edge->points[i * 2 + 1] * s };
|
|
cpVect b =
|
|
{ edge->points[i * 2 + 2] * s, edge->points[i * 2 + 3] * s };
|
|
cpSegmentShapeSetEndpoints(edge->shapes[i], a, b);
|
|
cpSegmentShapeSetRadius(edge->shapes[i], edge->thickness);
|
|
}
|
|
}
|
|
|
|
|
|
|
|
void phys2d_dbgdrawseg(struct phys2d_segment *seg)
|
|
{
|
|
cpVect p = cpBodyGetPosition(cpShapeGetBody(seg->shape.shape));
|
|
cpVect a = cpSegmentShapeGetA(seg->shape.shape);
|
|
cpVect b = cpSegmentShapeGetB(seg->shape.shape);
|
|
|
|
float angle = cpBodyGetAngle(cpShapeGetBody(seg->shape.shape));
|
|
float ad = sqrt(pow(a.x, 2.f) + pow(a.y, 2.f));
|
|
float bd = sqrt(pow(b.x, 2.f) + pow(b.y, 2.f));
|
|
float aa = atan2(a.y, a.x) + angle;
|
|
float ba = atan2(b.y, b.x) + angle;
|
|
draw_line(ad * cos(aa) + p.x, ad * sin(aa) + p.y, bd * cos(ba) + p.x, bd * sin(ba) + p.y);
|
|
}
|
|
|
|
void phys2d_dbgdrawbox(struct phys2d_box *box)
|
|
{
|
|
int n = cpPolyShapeGetCount(box->shape.shape);
|
|
cpVect b = cpBodyGetPosition(cpShapeGetBody(box->shape.shape));
|
|
float angle = cpBodyGetAngle(cpShapeGetBody(box->shape.shape));
|
|
float points[n * 2];
|
|
|
|
for (int i = 0; i < n; i++) {
|
|
cpVect p = cpPolyShapeGetVert(box->shape.shape, i);
|
|
float d = sqrt(pow(p.x, 2.f) + pow(p.y, 2.f));
|
|
float a = atan2(p.y, p.x) + angle;
|
|
points[i * 2] = d * cos(a) + b.x;
|
|
points[i * 2 + 1] = d * sin(a) + b.y;
|
|
}
|
|
|
|
draw_poly(points, n);
|
|
}
|
|
|
|
void phys2d_dbgdrawpoly(struct phys2d_poly *poly)
|
|
{
|
|
cpVect b = cpBodyGetPosition(cpShapeGetBody(poly->shape.shape));
|
|
float angle = cpBodyGetAngle(cpShapeGetBody(poly->shape.shape));
|
|
|
|
float s = id2go(poly->shape.go)->scale;
|
|
for (int i = 0; i < poly->n; i++) {
|
|
float d = sqrt(pow(poly->points[i * 2] * s, 2.f) + pow(poly->points[i * 2 + 1] * s, 2.f));
|
|
float a = atan2(poly->points[i * 2 + 1], poly->points[i * 2]) + angle;
|
|
draw_point(b.x + d * cos(a), b.y + d * sin(a), 3);
|
|
}
|
|
|
|
if (poly->n >= 3) {
|
|
int n = cpPolyShapeGetCount(poly->shape.shape);
|
|
float points[n * 2];
|
|
|
|
for (int i = 0; i < n; i++) {
|
|
cpVect p = cpPolyShapeGetVert(poly->shape.shape, i);
|
|
float d = sqrt(pow(p.x, 2.f) + pow(p.y, 2.f));
|
|
float a = atan2(p.y, p.x) + angle;
|
|
points[i * 2] = d * cos(a) + b.x;
|
|
points[i * 2 + 1] = d * sin(a) + b.y;
|
|
}
|
|
|
|
draw_poly(points, n);
|
|
}
|
|
|
|
}
|
|
|
|
void phys2d_dbgdrawedge(struct phys2d_edge *edge)
|
|
{
|
|
cpVect p = cpBodyGetPosition(cpShapeGetBody(edge->shape.shape));
|
|
float s = id2go(edge->shape.go)->scale;
|
|
float angle = cpBodyGetAngle(cpShapeGetBody(edge->shape.shape));
|
|
|
|
for (int i = 0; i < edge->n; i++) {
|
|
float d = sqrt(pow(edge->points[i * 2] * s, 2.f) + pow(edge->points[i * 2 + 1] * s, 2.f));
|
|
float a = atan2(edge->points[i * 2 + 1], edge->points[i * 2]) + angle;
|
|
draw_point(p.x + d * cos(a), p.y + d * sin(a), 3);
|
|
}
|
|
|
|
for (int i = 0; i < edge->n - 1; i++) {
|
|
cpVect a = cpSegmentShapeGetA(edge->shapes[i]);
|
|
cpVect b = cpSegmentShapeGetB(edge->shapes[i]);
|
|
float ad = sqrt(pow(a.x, 2.f) + pow(a.y, 2.f));
|
|
float bd = sqrt(pow(b.x, 2.f) + pow(b.y, 2.f));
|
|
float aa = atan2(a.y, a.x) + angle;
|
|
float ba = atan2(b.y, b.x) + angle;
|
|
draw_line(ad * cos(aa) + p.x, ad * sin(aa) + p.y, bd * cos(ba) + p.x, bd * sin(ba) + p.y);
|
|
}
|
|
}
|
|
|
|
void phys2d_reindex_body(cpBody *body) {
|
|
cpSpaceReindexShapesForBody(space, body);
|
|
}
|
|
|
|
void register_collide(void *sym) {
|
|
|
|
}
|
|
|
|
static cpBool script_phys_cb_begin(cpArbiter *arb, cpSpace *space, void *data) {
|
|
cpBody *body1;
|
|
cpBody *body2;
|
|
cpArbiterGetBodies(arb, &body1, &body2);
|
|
|
|
int g1 = cpBodyGetUserData(body1);
|
|
int g2 = cpBodyGetUserData(body2);
|
|
|
|
duk_push_heapptr(duk, id2go(g1)->cbs.begin.fn);
|
|
duk_push_heapptr(duk, id2go(g1)->cbs.begin.obj);
|
|
|
|
int obj = duk_push_object(duk);
|
|
|
|
vect2duk(cpArbiterGetNormal(arb));
|
|
duk_put_prop_literal(duk, obj, "normal");
|
|
|
|
duk_push_int(duk, g2);
|
|
duk_put_prop_literal(duk, obj, "hit");
|
|
|
|
duk_call_method(duk, 1);
|
|
duk_pop(duk);
|
|
|
|
return 1;
|
|
}
|
|
|
|
void phys2d_add_handler_type(int cmd, int go, struct callee c) {
|
|
cpCollisionHandler *handler = cpSpaceAddWildcardHandler(space, go);
|
|
|
|
handler->userData = go;
|
|
|
|
switch (cmd) {
|
|
case 0:
|
|
handler->beginFunc = script_phys_cb_begin;
|
|
id2go(go)->cbs.begin = c;
|
|
break;
|
|
|
|
case 1:
|
|
break;
|
|
|
|
case 2:
|
|
break;
|
|
|
|
case 3:
|
|
//handler->separateFunc = s7_phys_cb_separate;
|
|
//go->cbs->separate = cb;
|
|
break;
|
|
}
|
|
|
|
} |